Dissertations / Theses on the topic 'Renal medullla'
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Zhang, Wensheng. "Protein and oxygen transport across vasa recta in the renal medulla /." Thesis, Connect to Dissertations & Theses @ Tufts University, 2002.
Find full textAdviser: Aurelie Edwards. Submitted to the Dept. of Chemical Engineering. Includes bibliographical references (leaves 210-219). Access restricted to members of the Tufts University community. Also available via the World Wide Web;
Ahrens, Nikolai. "Evidence for and characterization of cytoplasmic dynein and kinesin in renal medulla and cortex." Thesis, University of Oxford, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.386898.
Full textSanches, Osimar de Carvalho [UNESP]. "Histopatologia da série eritróide da medula óssea e do tecido renal de cães com insuficiência renal crônica." Universidade Estadual Paulista (UNESP), 2005. http://hdl.handle.net/11449/95897.
Full textUniversidade Estadual Paulista (UNESP)
A insuficiência renal crônica é a principal afecção renal dos cães e a anemia é a principal seqüela desta infecção. Os rins são os principais responsáveis pela produção do hormônio estimulador e regulador da eritropoiese - eritropoetina. O presente estudo teve por objetivos investigar e descrever as alterações histopatológicas dos rins e da linhagem eritróide na medula óssea de cães portadores de insuficiência renal crônica (IRC), identificando e quantificando as células precursoras das hemácias na medula óssea. Foram utilizados 15 animais controle e 15 animais portadores de insuficiência renal crônica. As amostras foram analisadas em microscopia ótica, tendo como auxílio à coloração de Giemsa, que foi utilizada para diferenciar os precursores eritróides. Os animais do grupo controle apesar de apresentarem alterações morfológicas nos rins, estas não foram suficientes para promover alterações nos parâmetros hematológicos, bem como na bioquímica sérica. Já nos animais do grupo com IRC as alterações morfológicas se caracterizaram por glomerulonefrite crônica, seguida da glomerulonefrite proliferativa mesangial, glomerulonefrite membranoproliferativa e da glomerulonefrite membranosa com 46,66%, 26,66%, 13,33% e 13,33% dos animais respectivamente. Vale ressaltar ainda que 73,33% dos animais exibiam nefrite intersticial crônica e 20% apresentavam nefrite intersticial focal. Dos quinze animais do grupo com IRC, 80% exibiam quadro de anemia, sendo 46,66% do tipo normocítica normocrômica, 20% macrocítica hipocrômica, 6,66% com anemia microcítica normocrômica e 6,66% do tipo macrocítica hipocrômica. As alterações morfológicas túbulo-intersticiais apresentaram maior correlação com as concentrações de uréia e creatinina e com a contagem dos precursores eritróides.
The chronic renal failure, the main renal afection of the dogs and the anemia is the main sequel of this afection. The kidneys are the main responsible for the production of the hormone stimulator and regulator of the erythropoiesis - erythropoietin. The present work had as objectives to investigate and to describe the histopathologics alterations of the kidneys and of the erythroid lineage in the bone marrow of dogs bearers of chronic renal failure (CRF), identifying and quantifying the precursory cells of the erythrocytes in the bone marrow. 15 control animals and 15 animals bearers of chronic renal failure were used. The samples were analyzed in optic microscopy, with the use of the Giemsa coloration, used to differentiate the erythroid precursors. The animals of the control group inspite of the morphologic alterations presented in the kidneys, were not enough to promote alterations in the hematological parameters, as well as in the serum biochemistry. In the animals of the group with CRF the morphologic alterations are characterized by chronic glomerulonephritis, following by proliferative mesangial glomerulonephritis, membranousproliferative glomerulonephritis and the membranous glomerulonephritis with 46,66%, 26,66%, 13,33% and 13,33% of the animals respectively. It is worth to stand out that 73,33% of the animals exhibited chronic interstitial nephritis and 20% presented focal interstitial nephritis. Of the 15 animals of the group with CRF, 80% exhibited anemia, being 46,66% of the type normocytic normochromic, 20% macrocytic hypochromic, 6,66% with anemia microcytic normochromic and 6,66% of the type macrocytic hypochromic. The morphologic tubulo-interstitial alterations presented larger correlation with the urea concentrations and creatinine and with the counting of the erythroid precursors.
Sanches, Osimar de Carvalho. "Histopatologia da série eritróide da medula óssea e do tecido renal de cães com insuficiência renal crônica /." Botucatu : [s.n.], 2005. http://hdl.handle.net/11449/95897.
Full textResumo: A insuficiência renal crônica é a principal afecção renal dos cães e a anemia é a principal seqüela desta infecção. Os rins são os principais responsáveis pela produção do hormônio estimulador e regulador da eritropoiese - eritropoetina. O presente estudo teve por objetivos investigar e descrever as alterações histopatológicas dos rins e da linhagem eritróide na medula óssea de cães portadores de insuficiência renal crônica (IRC), identificando e quantificando as células precursoras das hemácias na medula óssea. Foram utilizados 15 animais controle e 15 animais portadores de insuficiência renal crônica. As amostras foram analisadas em microscopia ótica, tendo como auxílio à coloração de Giemsa, que foi utilizada para diferenciar os precursores eritróides. Os animais do grupo controle apesar de apresentarem alterações morfológicas nos rins, estas não foram suficientes para promover alterações nos parâmetros hematológicos, bem como na bioquímica sérica. Já nos animais do grupo com IRC as alterações morfológicas se caracterizaram por glomerulonefrite crônica, seguida da glomerulonefrite proliferativa mesangial, glomerulonefrite membranoproliferativa e da glomerulonefrite membranosa com 46,66%, 26,66%, 13,33% e 13,33% dos animais respectivamente. Vale ressaltar ainda que 73,33% dos animais exibiam nefrite intersticial crônica e 20% apresentavam nefrite intersticial focal. Dos quinze animais do grupo com IRC, 80% exibiam quadro de anemia, sendo 46,66% do tipo normocítica normocrômica, 20% macrocítica hipocrômica, 6,66% com anemia microcítica normocrômica e 6,66% do tipo macrocítica hipocrômica. As alterações morfológicas túbulo-intersticiais apresentaram maior correlação com as concentrações de uréia e creatinina e com a contagem dos precursores eritróides.
Abstract: The chronic renal failure, the main renal afection of the dogs and the anemia is the main sequel of this afection. The kidneys are the main responsible for the production of the hormone stimulator and regulator of the erythropoiesis - erythropoietin. The present work had as objectives to investigate and to describe the histopathologics alterations of the kidneys and of the erythroid lineage in the bone marrow of dogs bearers of chronic renal failure (CRF), identifying and quantifying the precursory cells of the erythrocytes in the bone marrow. 15 control animals and 15 animals bearers of chronic renal failure were used. The samples were analyzed in optic microscopy, with the use of the Giemsa coloration, used to differentiate the erythroid precursors. The animals of the control group inspite of the morphologic alterations presented in the kidneys, were not enough to promote alterations in the hematological parameters, as well as in the serum biochemistry. In the animals of the group with CRF the morphologic alterations are characterized by chronic glomerulonephritis, following by proliferative mesangial glomerulonephritis, membranousproliferative glomerulonephritis and the membranous glomerulonephritis with 46,66%, 26,66%, 13,33% and 13,33% of the animals respectively. It is worth to stand out that 73,33% of the animals exhibited chronic interstitial nephritis and 20% presented focal interstitial nephritis. Of the 15 animals of the group with CRF, 80% exhibited anemia, being 46,66% of the type normocytic normochromic, 20% macrocytic hypochromic, 6,66% with anemia microcytic normochromic and 6,66% of the type macrocytic hypochromic. The morphologic tubulo-interstitial alterations presented larger correlation with the urea concentrations and creatinine and with the counting of the erythroid precursors.
Mestre
Dempsey, Sara. "Diuretic and natriuretic activity of FAAH inhibition in the renal medulla: a proposed role of palmitoylethanolamide and its regulation by renal medullary interstitial cells." VCU Scholars Compass, 2019. https://scholarscompass.vcu.edu/etd/5776.
Full textAdun, Eseoghene. "Vasopressin Alters the Expression of Aquaporins, Urea Transporters, and ER Stress Genes in the Mouse Renal Medulla." Thesis, The University of Arizona, 2012. http://hdl.handle.net/10150/243731.
Full textCaldas, Heloisa Cristina. "Efeito das células derivadas da medula óssea no tratamento da insuficiência renal crônica experimental." Faculdade de Medicina de São José do Rio Preto, 2011. http://bdtd.famerp.br/handle/tede/104.
Full textChronic renal failure (CRF) is characterized by progressive and irreversible loss of renal function and its treatment generates significant public spending for maintenance and care of patients on dialysis. Stem cell (SC) therapy, in its potential for treatment of chronic diseases, may be a promising strategy for repairing the damage from or slowing the progression of CRF. There are questions about cell type, quantity of cells, method and ideal place for deployment of SC and the role it plays in the repair of renal parenchyma. Objective: 1) To evaluate the effect of infusion of bone marrow derived cells (BMDC) in the treatment of experimental CRF; 2) Evaluate the combined effect of SC and biomaterial (BM) in the progression of CRF and study the effect of this therapy in different stages of CRF; 3) Evaluate the development of techniques for isolation and cultivation of human umbilical cord blood (HUCB) mesenchymal cells. Methods: Article 1: We used the 5/6 mass reduction model to induce experimental CRF. Kidney function was measured at the beginning of the experiment and 60 and 120 days after the surgery; Article 2: Animals were subdivided as to the amount of renal parenchyma injured (5/6 or 2/3), the use of BM as a scaffold to cell implantation, and cell type used (mononuclear or mesenchymal cells). Renal function was evaluated on days 0, 45, and 90 after surgery. Histological and immunohistochemical analyses were done in all groups at the end of the study; Article 3: Ten samples of HUCB were used and two different procedures for cultivation of mesenchymal stem cells (MSC) were tested: without Ficoll-Paque density gradient, to obtain nucleated cells; with Ficoll-Paque density gradient, for obtaining mononuclear cells. Results: Article 1: CRF progression analysis showed that treatment with BMDC significantly reduced the rate of decline of creatinine clearance (Clcr) when compared with the control group; Article 2:Treated animals showed significantly lower increases in serum creatinine and 24 hour proteinuria, and higher increases in Clcr after 90 days when compared to control animals in both models of CRF; Article 3: The MSC in culture from the method without Ficoll-Paque density gradient maintained growth forming confluent cell foci. Conclusions: Article 1: Progression of CRF can be delayed by injection of BMDC in the renal parenchyma; Article 2: a) Use of SC combined with BM can be an alternative way to administer BMDC; b) Cell therapy seems to be most effective when administered in less severe stages of CRF; Article 3: Nucleated cells without using Ficoll-Paque density gradient showed more efficiency in the cultivation of MSC from HUCB when compared with the procedure employing Ficoll-Paque density gradient
A insuficiência renal crônica (IRC) é caracterizada pela perda progressiva e irreversível da função renal e seu tratamento gera um gasto público significativo para manutenção de pacientes em tratamento dialítico. A terapia com células-tronco (CT), pelo seu potencial de tratamento das doenças crônicas, pode ser uma estratégia promissora para reparar ou retardar a progressão da IRC. Existem dúvidas sobre o tipo celular, a quantidade de células, o método e local ideal para implantação das CT e o papel por elas desempenhado na reparação do parênquima renal. Objetivos: 1) avaliar o efeito da infusão de células derivadas da medula óssea (CDMO) no tratamento da IRC experimental; 2) avaliar o efeito combinado das CT e biomaterial (BM) na progressão da IRC e estudar o efeito dessa terapia em diferentes estágios da IRC; 3) Avaliar o desenvolvimento de técnicas de isolamento e cultivo de células mesenquimais do sangue de cordão umbilical humano (SCU). Métodos: artigo 1: usamos o modelo de redução de massa 5/6 para induzir a IRC experimental. Função renal foi medida no início do experimento e 60 e 120 dias depois da cirurgia; artigo 2: animais foram subdivididos conforme a quantidade de parênquima renal lesado (5/6 ou 2/3), o uso de BM como arcabouço para o implante celular e o tipo de células utilizado (célula mononuclear ou mesenquimal). A função renal foi avaliada nos dias 0, 45 e 90 após cirurgia. Análise histológica e imunohistoquimica foram realizadas em todos os grupos ao final do estudo; artigo 3: Foram utilizadas dez amostras de SCU e testados dois diferentes procedimentos para cultivo de células-tronco mesenquimal (CTM): sem gradiente de densidade Ficoll-Paque, para obtenção de células nucleadas; por gradiente de densidade Ficoll-Paque, para obtenção de células mononucleares. Resultados: artigo 1: Análises da progressão da IRC mostraram que o tratamento com CDMO reduziu significativamente a taxa de declínio do clearance ( Clcr) quando comparados com o grupo controle; artigo 2: animais tratados apresentaram aumentos significativamente menores de creatinina sérica, proteinúria e Clcr maiores após 90 dias, quando comparado aos animais controles em ambos os modelos de IRC; artigo 3: as CTM em cultura provenientes do método sem gradiente de densidade Ficoll- Paque mantiveram o crescimento formando focos confluentes de células. Conclusões: artigo 1: a progressão da IRC pode ser retardada pela injeção de CDMO no parênquima renal; artigo 2: a) utilização da CT combinada com o BM pode ser uma via alternativa para administrar a CTMO; b) terapia celular parece ser mais eficaz quando administrada em estágios menos graves da IRC; artigo 3: As células nucleadas sem uso do gradiente de densidade Ficoll-Paque mostraram mais eficiente para o cultivo de CTM do SCU quando comparado ao procedimento com gradiente de densidade Ficoll-Paque.
Alexandre, Cristianne da Silva. "As células linhagem negativa (Lin) de medula óssea atenuam a progressão da doença renal crônica." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/5/5148/tde-10032008-150329/.
Full textProgressive renal failure continues to be a challenge. The use of bone marrowderived stem cells (SCs) represents a means of meeting that challenge. We used lineage-negative (Lin-) SCs to test the hypothesis that Lin- cell infusion decreases renal injury. Syngeneic Fischer 344 rats were submitted to 5/6 nephrectomy and divided into 3 groups: Nx (untreated); NxSC1 (receiving 2 × 106 Lin- cells on postnephrectomy day 15); and NxSC3 (receiving 2 × 106 Lin- cells on postnephrectomy days 15, 30 and 45). Controls were unoperated/untreated. On postnephrectomy day 60, clearance studies, immunohistochemistry and immunoblotting were performed. Lin- cell infusion effectively reduced postnephrectomy proteinuria, glomerulosclerosis, anemia, renal infiltration of immune cells and monocyte chemoattractant protein-1 protein expression, as well as decreasing the interstitial area. Immunostaining for proliferating cell nuclear antigen showed that, in comparison with controls, Nx rats presented greater cell proliferation, whereas NxSC1 rats and NxSC3 rats presented less cell proliferation than did Nx rats. Protein expression of p21 and VEGF increased after nephrectomy and decreased after Lin- cell infusion. Protein expression of eNOS reduced after nephrectomy and increased after cell infusion. These data suggest that SC treatment ameliorates progressive end-stage renal disease.
Issaian, Tadeh. "Three-Dimentional Architecture of the Renal Inner Medulla of the Desert Rodent Dipodomys Merriami: Potential Impact on the Urinary Concentrating Mechanism." Thesis, The University of Arizona, 2010. http://hdl.handle.net/10150/156916.
Full textPiera, Ryan Elias. "Mensuração ultra-sonográfica da relação córtico-medular renal em cães." Universidade de São Paulo, 2005. http://www.teses.usp.br/teses/disponiveis/10/10132/tde-06082007-104522/.
Full textThrough the ultrasound, a insurance and exact diagnostic, we can establish renal corticomedullary correlation (RCM) evaluating the volume of the cortical and medullary adding a quantitative evaluation to the used method in the interpretations ultrasonographics, that still are of qualitative character (subjective) and depend on the ability, the equipment and the experience of the medical veterinarian who will be making the examination. We use 30 animals of different races, with ages between 1 and 9 years, males and females, with weights in the band of 9 up to 40 kg, proceeding from clinical particular veterinarians. All had passed for examinations clinical and physical, revealing healthy and without description of illness or renais problems, what it was confirmed through laboratoriais examinations. After the gaugings for ultrasound the measures had been placed in formulas, which had given to the volumes of cortex and medullary, following then for a more necessary corticomedullary correlation. The results had shown that the values of RCM independently go of 2,26 the 3,33 of the renal volume, sex, weight and age, being these variants of low significance with the corticomedullary correlation.
Crivellenti, Sofia Borin [UNESP]. "Fatores indutores e supressores da eritropoiese em caninos doentes renais crônicos." Universidade Estadual Paulista (UNESP), 2015. http://hdl.handle.net/11449/124044.
Full textEste estudo teve como objetivo a quantificação sérica de hormônios e citocinas indutores (eritropoietina e IL-3) e supressores (paratormônio, IL-1β, TNFα e IFNγ) da eritropoiese, correlacionando-os com as variáveis eritrocitárias periféricas e centrais. Amostras de sangue periférico, urina e medula óssea foram obtidas de 10 cães com doença renal crônica estádio 2 (DRC2), 10 cães com DRC estádio 3 (DRC3), 10 cães com DRC estádio 4 (DRC4) e 10 cães adultos saudáveis (grupo controle) com vistas à realização de hemograma, análise bioquímica sérica e urinária, urinálise, ensaios imunoenzimáticos e análise citológica da medula óssea. As concentrações dos fatores indutores e supressores da eritropoiese, assim como os resultados do mielograma dos cães do DRC2 assemelharam-se aos do grupo controle, e apesar de não terem manifestado anemia, a presença de reticulocitose alerta para o fato de fatores externos a medula óssea estarem precocemente causando perda ou destruição dos eritrócitos. A anemia em cães com DRC está relacionada ao aumento nas concentrações de paratormônio e TNFα, e a exacerbação dos referidos fatores supressores, bem como à hipoplasia da série eritróide, representada principalmente pela redução da população de eritroblastos policromatofílicos e ortocromáticos, constituem, parcialmente, a base da gênese e do agravamento do estado anêmico nas fases mais avançadas da DRC em cães
The aim of this study was to evaluate bone marrow precursor cells, circulating concentrations of cytokines and hormones that can stimulate (erythropoietin and IL-3) and suppress (parathyroid hormone, IL-1β, TNF and IFN) erythropoiesis, and make their correlation with the peripheral and central erythrocyte variables. Peripheral blood samples, urine and bone marrow were obtained from 10 dogs with chronic kidney disease stage 2 (CKD2), 10 dogs with CKD stage 3 (CKD3), 10 dogs with CKD stage 4 (CKD4), and 10 healthy adult dogs (control group) for complete blood count (CBC), serum and urinary biochemical analysis, urinalysis, immunoassays and cytological analysis of bone marrow. The concentrations of erythropoiesis stimulator and suppressor factors, and cytological bone marrow results from CKD2 dogs were similar to those of the control group. This group also exhibited reticulocytosis even though not have expressed anemia, which means that extrinsic factors are early cause of blood loss or destruction of red blood cells. The anemia in dogs with CKD is related to increased parathyroid hormone and TNFα serum concentrations. The increases of such suppressor factors in association with erythroid hypoplasia are considered as part of the genesis and the aggravation of the anemic state in the end stages of CKD in dogs
Crivellenti, Sofia Borin. "Fatores indutores e supressores da eritropoiese em caninos doentes renais crônicos /." Jaboticabal, 2015. http://hdl.handle.net/11449/124044.
Full textBanca: Mirela Tinucci Costa
Banca: Thiago Demarchi Munhoz
Banca: Daniela Gomes da Silva
Banca: Geórgia Modé Magalhães
Resumo: Este estudo teve como objetivo a quantificação sérica de hormônios e citocinas indutores (eritropoietina e IL-3) e supressores (paratormônio, IL-1β, TNFα e IFNγ) da eritropoiese, correlacionando-os com as variáveis eritrocitárias periféricas e centrais. Amostras de sangue periférico, urina e medula óssea foram obtidas de 10 cães com doença renal crônica estádio 2 (DRC2), 10 cães com DRC estádio 3 (DRC3), 10 cães com DRC estádio 4 (DRC4) e 10 cães adultos saudáveis (grupo controle) com vistas à realização de hemograma, análise bioquímica sérica e urinária, urinálise, ensaios imunoenzimáticos e análise citológica da medula óssea. As concentrações dos fatores indutores e supressores da eritropoiese, assim como os resultados do mielograma dos cães do DRC2 assemelharam-se aos do grupo controle, e apesar de não terem manifestado anemia, a presença de reticulocitose alerta para o fato de fatores externos a medula óssea estarem precocemente causando perda ou destruição dos eritrócitos. A anemia em cães com DRC está relacionada ao aumento nas concentrações de paratormônio e TNFα, e a exacerbação dos referidos fatores supressores, bem como à hipoplasia da série eritróide, representada principalmente pela redução da população de eritroblastos policromatofílicos e ortocromáticos, constituem, parcialmente, a base da gênese e do agravamento do estado anêmico nas fases mais avançadas da DRC em cães
Abstract: The aim of this study was to evaluate bone marrow precursor cells, circulating concentrations of cytokines and hormones that can stimulate (erythropoietin and IL-3) and suppress (parathyroid hormone, IL-1β, TNF and IFN) erythropoiesis, and make their correlation with the peripheral and central erythrocyte variables. Peripheral blood samples, urine and bone marrow were obtained from 10 dogs with chronic kidney disease stage 2 (CKD2), 10 dogs with CKD stage 3 (CKD3), 10 dogs with CKD stage 4 (CKD4), and 10 healthy adult dogs (control group) for complete blood count (CBC), serum and urinary biochemical analysis, urinalysis, immunoassays and cytological analysis of bone marrow. The concentrations of erythropoiesis stimulator and suppressor factors, and cytological bone marrow results from CKD2 dogs were similar to those of the control group. This group also exhibited reticulocytosis even though not have expressed anemia, which means that extrinsic factors are early cause of blood loss or destruction of red blood cells. The anemia in dogs with CKD is related to increased parathyroid hormone and TNFα serum concentrations. The increases of such suppressor factors in association with erythroid hypoplasia are considered as part of the genesis and the aggravation of the anemic state in the end stages of CKD in dogs
Doutor
Dieamant, Gustavo de Campos. "Avaliação dos efeitos imuno-hematopoieticos da geleia real em modelo experimental de listeriose murina." [s.n.], 2003. http://repositorio.unicamp.br/jspui/handle/REPOSIP/312346.
Full textDissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Ciências Médicas
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Resumo: Avaliamos, neste trabalho, os efeitos da Geléia Real (GR) sobre o crescimento e diferenciação dos precursores hematopoiéticos da medula óssea e baço em animais infectados com Listeria monocytogenes. Além disso, a atividade estimuladora de colônias do soro, as alterações no peso do baço e a resistência dos animais frente a infecção também foram avaliados. Para tanto, camundongos BALB/c foram tratados profilaticamente, por um período de 7 dias consecutivos, com GR nas doses de 12S, 2S0, SOOe 7SO mg/Kg, por gavagem. Posteriormente, os animais foram infectados intraperitonealmente com uma dose subletal (1,Sx103 bactérias/animal) de Listeria monocytogenes. Para avaliarmos a resistência dos animais frente à infecção, realizamos uma curva de sobrevida utilizando uma dose letal desta bactéria (1,Sx105 bactérias/animal). Nossos resultados demonstraram um decréscimo significativo no número de precursores hematopoiéticos da medula óssea nos animais infectados com Listeria monocytogenes, além de uma significativa hematopoiése extramedular. No entanto, quando os animais foram tratados profilaticamente com GR, independentemente da dose administrada, houve uma reversão da mielossupressão induzida pela infecção, resultando em níveis normais de CFUGM. Outro aspecto importante é com relação à produção de fatores estimuladores de colônias de células hematopoiéticas. Neste sentido, observamos que os animais infectados apresentaram uma maior atividade estimuladora de colônias no soro. A administração prévia de GR, nas quatro doses avaliadas, nos animais infectados, aumentou significativamente a atividade estimuladora do soro, resultando em um aumento no número de CFU-GM em relação aos grupos apenas infectados. Além disso, observamos também, um aumento do peso do baço dos animais infectados, enquanto que valores normais foram obtidos quando os animais receberam GR antes da infecção, em todas as doses administradas. o tratamento com GR aumentou a resistência dos animais frente à listeriose, sendo que a probabilidade de sobrevida para as doses de 125, 250, 500 e 750 mg/Kg foi de 37,5, 37,5, 25 e 12,5%, respectivamente, não havendo diferenças estatisticamente significativas entre si. Nossos resultados sugerem que a GR possui uma potente atividade imunomoduladora, corroborando com resultados existentes na literatura e anteriormente obtidos em nosso laboratório. A ampla faixa terapêutica do composto frente à listeriose foi comprovada, visto que não houve uma alteração significativa entre as respostas imuno-hematopoiéticas nas doses avaliadas, sugerindo que mesmo em baixas concentrações, a GR é capaz de restaurar o sistema imunológico frente à infecção
Abstract: We evaluated in this work the effects of Royal Jelly (RJ) on growth and differentiation of bone marrow and spleen hematopoietics progenitors in Listeria monocytogenes (LM) infected mice. We also evaluated serum colonystimulating activity, alterations in spleen weight and animal resistance front to the infection. In such way, BALB/c mice were profilacticly treated with RJ by gavage for 7 consecutive days with doses at 125, 250, 500 and 750 mg/Kg. Three hours after the last treating day the animais were infected intraperitoneally with a sublethal dose of the bacteria (1x103 LM/animal). To evaluate animal resistance front to the infection we carried out a survival analysis with a lethal dose of the bacteria (1x105 LM/animal). Our results demonstrated significant decrease on the hematopoietic progenitor numbers in LM bearing mice and significant extramedullar hematopoiesis as consequence. In the other hand, myelossupression induced by listeriosis was reverted when bearing mice were treated profilacticly with ali doses of RJ, resulting in normal levels of CFU-GM. Another important aspect regards colony-stimulating factor production by hematopoietic cells. In this direction, we observed that the infected animais presented higher serum colony-stimulating activity. Previous administration of RJ at ali doses in infected mice significantly increased serum stimulatory activity as well as CFU-GM number when compared to non-treated bearing groups. We also observed spleen weight increase in the non-treated infected group at ali doses, which contrasted with normal values obtained in previously treated bearing mice. In addition, the administration of RJ at 125, 250, 500 and 750 mg/Kg increased animal resistance front to listeriosis to 37,5%, 37,5%, 25% and 12,5%, respectively. Our results have demonstrated that RJ has a stimulating effect on the modulation of the immuno-hematopoietic response in mice infected with LM. Moreover, the treatment with RJ increased survival rate in infected mice with lethal dose of the bacteria. We demonstrated that RJ presents extensive therapeutic dose range since the adminisitration of ali evaluated doses (125, 250, 500 and 750 mg/Kg) presented similar results
Mestrado
Mestre em Farmacologia
Borin, Sofia [UNESP]. "Estudo da hipoplasia sanguínea e quantificação imunofenotípica de células CD45+ no sangue e na medula óssea de cães com doença renal crônica." Universidade Estadual Paulista (UNESP), 2011. http://hdl.handle.net/11449/89227.
Full textCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Objetivou-se avaliar a celularidade, bem como quantificar imunofenotipicamente as células sanguíneas CD45+ periféricas e centrais, em cães portadores de DRC nos diversos estádios da doença. O grupo controle foi composto de 11 cães saudáveis, de qualquer gênero e raça, com idade acima de cinco anos. O grupo DRC composto de 29 cães, de qualquer gênero, raça e idade, com diagnóstico de DRC, classificados segundo a IRIS em um dos estádios 2, 3 e 4 da doença, para a instituição dos subgrupos DRC2 (9), DRC3 (10) e DRC4 (10). Destes foram obtidas amostras de sangue periférico, medula óssea e urina, para realização de hemograma, reticulocitometria, avaliações bioquímicas séricas e urinárias, mielograma, imunofenotipagem de células CD45+ periféricas e centrais e urinálise. Com base nos resultados obtidos neste estudo, conclui-se que os cães em estádio 2 da DRC não apresentam hipoplasia sanguínea, e a resposta medular mantém-se regenerativa. Crêse que a anemia normocítica normocrômica do estádio 3, apresenta-se correlacionada à azotemia e à hiperfosfatemia. O estádio 4 da DRC é marcado por significativa linfopenia e severa anemia não regenerativa e hipoplasia da série eritróide. Diante das correlações encontradas, pode-se concluir quanto maiores forem as concentrações séricas de creatinina e fósforo, mais severa a anemia e menor a resposta eritropoiética, e que, o fósforo e a ureia, assim como a UP/C e pressão arterial sistólica se prestam como bons indicadores da progressão da DRC. A utilização de aquisição linear para quantificação das células CD45+ permitiu verificar com precisão a linfopenia nos DRC4, entretanto desaconselha-se o uso desta técnica em substituição ao mielograma, a menos que se altere a forma de aquisição ou se faça uso de anticorpos específicos para as linhagens hematopoiéticas
This trial aimed to evaluate the cellular and quantify immunophenotypically blood CD45+ cells in peripheral blood and central in dogs with CKD at various stages of the disease. The control group included 11 healthy dogs, of any gender and race, aged five years. The CRF group consisted of 29 dogs, of any gender, race and age with CKD were classified according to IRIS in one of stages 2, 3 and 4 of the disease, and subsequent establishment of subgroups CKD2 (9), CKD3 ( 10) and CKD4 (10). Samples were collected from peripheral blood, bone marrow and urine, to perform complete blood count, reticulocytes, biochemical assessments of blood and urine, bone marrow, immunophenotyping of CD45+ cells in peripheral blood and central and urinalysis. Based on these results, we conclude that dogs with stage 2 CKD do not exhibit hypoplasia of blood and bone marrow response remains regenerative. It is believed that the normocytic normochromic stage 3, it appears correlated with azotemia and hyperphosphatemia. The fourth stage of CKD is characterized by significant lymphopenia, severe non-regenerative anemia and hypoplasia of the erythroid series. Given the correlations, one can conclude that higher serum concentrations of creatinine and phosphorus, more severe anemia and lower the erythropoietic response, and that the phosphorus and urea, as well as the ratio UP/C and blood pressure lend themselves as good indicators of the progression of CKD. The use of acquisition linear quantification of CD45+ cells has shown precisely the lymphopenia in CKD4, however warns against the use of the above technique to replace the myelogram, unless you change the form of acquisition or use is made of specific antibodies hematopoietic lineages
Cham, Joo Lee, and julie cham@rmit edu au. "The role of the hypothalamic paraventricular nucleus in the cardiovascular responses to elevations in body temperature." RMIT University. Medical Sciences, 2008. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20080805.114529.
Full textBorin, Sofia. "Estudo da hipoplasia sanguínea e quantificação imunofenotípica de células CD45+ no sangue e na medula óssea de cães com doença renal crônica /." Jaboticabal : [s.n.], 2011. http://hdl.handle.net/11449/89227.
Full textAbstract: This trial aimed to evaluate the cellular and quantify immunophenotypically blood CD45+ cells in peripheral blood and central in dogs with CKD at various stages of the disease. The control group included 11 healthy dogs, of any gender and race, aged five years. The CRF group consisted of 29 dogs, of any gender, race and age with CKD were classified according to IRIS in one of stages 2, 3 and 4 of the disease, and subsequent establishment of subgroups CKD2 (9), CKD3 ( 10) and CKD4 (10). Samples were collected from peripheral blood, bone marrow and urine, to perform complete blood count, reticulocytes, biochemical assessments of blood and urine, bone marrow, immunophenotyping of CD45+ cells in peripheral blood and central and urinalysis. Based on these results, we conclude that dogs with stage 2 CKD do not exhibit hypoplasia of blood and bone marrow response remains regenerative. It is believed that the normocytic normochromic stage 3, it appears correlated with azotemia and hyperphosphatemia. The fourth stage of CKD is characterized by significant lymphopenia, severe non-regenerative anemia and hypoplasia of the erythroid series. Given the correlations, one can conclude that higher serum concentrations of creatinine and phosphorus, more severe anemia and lower the erythropoietic response, and that the phosphorus and urea, as well as the ratio UP/C and blood pressure lend themselves as good indicators of the progression of CKD. The use of acquisition linear quantification of CD45+ cells has shown precisely the lymphopenia in CKD4, however warns against the use of the above technique to replace the myelogram, unless you change the form of acquisition or use is made of specific antibodies hematopoietic lineages
Orientador: Áureo Evangelista Santana
Coorientador: Marileda Bonafim Carvalho
Banca: Mirela Tinucci Costa
Banca: Márcia Mery Kogika
Mestre
Matos, Sócrates Bezerra de. "Infecção por citomegalovírus após o transplante de rim ou de células tronco hematopoiéticas no estado da Bahia: incidência, achados clínicos e imunológicos." Instituto de Ciências da Saúde, 2014. http://repositorio.ufba.br/ri/handle/ri/17033.
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O Citomegalovírus é um dos principais agentes infecciosos causadores de morbimortalidade em paciente transplantado. É um vírus de soroprevalência superior a 85% na população baiana e de incidência desconhecida em muitos centros de transplante. O presente estudo objetivou monitorar a infecção ativa por CMV em pacientes transplantados no estado da Bahia, descrevendo características clínicas da infecção e avaliando níveis plasmáticos da PCR e de citocinas pró-inflamatórias, Th1 e Th2 em diferentes momentos da infecção. Foram incluídos no estudo 87 pacientes submetidos ao transplante renal e 28 pacientes submetidos ao transplante de células tronco hematopoiéticas (TCTH). A infecção ativa por CMV foi monitorada através do ensaio de antigenemia para pp65 e as dosagens plasmáticas da PCR e das citocinas IFN- , IL-17A, IL-10, IL-6, IL-4 e TNF- foram realizadas por ensaio turbidimétrico e por ensaio multiplex de citometria de fluxo, respectivamente. Os pacientes submetidos ao transplante renal apresentaram incidência de 63,2% de infecção ativa por CMV, diarreia e elevação de creatinina sérica como os principais sintomas associados e variação nos níveis plasmáticos da PCR e da IL-4 em diferentes momentos da infecção. Nos pacientes submetidos ao TCTH, houve incidência da infecção ativa de 67,9%, febre e diarreia como os principais sintomas e variação nos níveis plasmáticos da PCR, IL-17A, IFN- e IL-4 em diferentes momentos da infecção. Em conclusão, foi possível observar que a infecção ativa por CMV ocorre em alta incidência nos pacientes submetidos ao transplante renal ou ao TCTH no estado da Bahia, evidenciando a necessidade do monitoramento seriado para o diagnóstico precoce e tratamento adequado dessa infecção. A variação dos níveis plasmáticos da PCR e das citocinas supracitadas indica a participação delas na resposta imune sistêmica contra o vírus, além da possibilidade de serem utilizadas como fatores preditivos na infecção.
Cavaglieri, Rita de Cássia. "Terapia com células-tronco na nefropatia crônica experimental: é possível bloquear a progressão da doença renal?" Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/5/5160/tde-19032010-125745/.
Full textStem cells (SCs) offer therapeutic potential for the treatment of renal diseases, due to the possibility of tissue regeneration and functional recovery. Various studies have shown renoprotection by SCs in experimental models of acute kidney disease. However, only a few studies have studied their effect in chronic kidney disease. The beneficial effect of SCs seems related to their capacity to differentiate or to secrete paracrine/endocrine factors. In this context, the inoculation route or the number of SCs homing in the injured region can play a crucial role. Therefore, transplantation of MSC through the intravenous route does not seem to be best suited for delivery of an important number of cells to the target organ. An alternative technique consists in local delivery of SCs in the subcapsular region of the kidney. The objective of the present study is to analyze the migration, distribution and potential renoprotective effect of the subcapsular inoculation of two types of SC - BSMC and mesenchymal stem cell (MSC) - in an experimental model of chronic kidney disease, the 5/6 nephrectomy (Nx). SCs were collected from the femur and tibia of donor rats by flushing. BSMC were isolated by centrifugation on a concentration gradient and MSCs were isolated by their capacity to adhere to plastic. Both types of SC were stained with DAPI to allow visualization in tissues. SC characterization was carried out by flow cytometry and differentiation in culture. Two experimental procedures were performed. In protocol I, BSMC (106 cells) were injected in female rats and in protocol II, MSCs (2x105 cells) were injected in male rats. Animals were divided into 4 groups: SHAM, sham-operated rats; SHAM+SC, sham-operated rats receiving BSMC or MSCs; Nx, rats undergoing 5/6 nephrectomy; Nx+SC, 5/6 Nx rats receiving BSMC or MSCs. We used Massons Trichrome staining and a semiquantitative analysis according to the degree of infiltration to follow the localization of BSMC in the renal tissue and to quantify their infiltration, respectively. The following parameters were studied: arterial blood pressure (AP), proteinuria (Uprot), albuminuria (Ualb) and serum creatinine (Screat). For the animals receiving SCs, analysis of histology, of inflammatory markers, of proliferating cells and of podocytes was performed. Results from Protocol I assessing DAPI-stained BSMC showed marked infiltration in 5 days from the subcapsular region to the cortex and the medulla, including presence in the glomeruli, over a period of 15 days. Female rats that received subcapsular injection of BSMC did not show improvement of the parameters used to assess kidney function. Protocol II: cultured MSCs demonstrated an ability to adhere to plastic, to grow in colonies and to differentiate in osteogenic cells. Quantitative analysis of cell markers by flow cytometry showed that isolated cells were positive for CD44 and CD90, with a small population of cells positive for CD31, CD34 and CD45, confirming a preponderant presence of MSCs. Inoculation of MSCs in Nx rats blocked the progression of the renal disease. Elevated AP in Nx rats at 15 and 30 days (149.6 ± 9.1 and 191.7 ± 2.8 mm Hg, respectively) was significantly reduced by inoculation of MSCs at 30 days (145.2 ± 6.8 mm Hg, p<0.05 vs Nx). Nx rats showed increased creatinine at 15 and 30 days (1.13 ± 0.08 and 1.16 ± 0.26 mg/dL, respectively) that was significantly reduced by injection of MSCs at 15 days (0.58 ± 0.03 mg/dL, p<0.05 vs Nx). Albuminuria was increased in Nx rats at 15 and 30 days (41.7 ± 10.8 and 138.7 ± 33.6 mg/24h, respectively) and was reduced in the Nx+MSC group at both time points (4.6 ± 1.5, and 23.4 ± 7.7 mg/24h, respectively; p<0.0001 vs Nx). Histologic analysis showed that glomerulosclerosis at 30 days in the Nx+MSC group was significantly reduced as compared to the Nx group (5.4 ± 2.5 % vs 22.0 ± 6.1 %, p<0.0001). Analysis of interstitial fibrosis did not show difference after 15 and 30 days in the Nx+MSC group compared to Nx group. Nx rats receiving MSCs showed slightly decreased inflammation markers, macrophages and lymphocytes, and proliferating cells in the renal tissue when compared to Nx rats. Analysis of myofibroblasts showed a significant decrease in expression of -smooth muscle actin in Nx+MSC rats compared to Nx rats. Podocyte number was analyzed by detection of WT-1, a specific marker. Nx rats receiving MSC had a significantly higher number of podocytes than Nx rats. In conclusion, our results show that after inoculation in the subcapsular region, SCs migrate throughout the cortex in direction of the medulla. Subcapsular inoculation of MSC provides a renoprotective effect in the model of 5/6 nephrectomy. Therefore, subcapsular inoculation could represent an important route of delivery of SCs to the kidney that allows a higher number of cells to act in the protection from progression of the disease.
Craig, Robin Ann. "Real-time PCR analysis of age-dependent alterations in the RVLM neurotransmitter gene expression profile of F344 rats." Diss., Manhattan, Kan. : Kansas State University, 2007. http://hdl.handle.net/2097/479.
Full textDaneva, Zdravka P. "Diuretic, natriuretic, and vasodepressor activity of a lipid fraction enhanced in medium of cultured mouse medullary interstitial cells by a selective FAAH inhibitor." VCU Scholars Compass, 2019. https://scholarscompass.vcu.edu/etd/5712.
Full textNaves, Lara Marques. "Contribuição dos grupamentos neuronais noradrenérgicos A1, A2 e do núcleo Pré-óptico mediano (MnPO) nas respostas cardiovasculares e autonômicas induzidas pela sobrecarga de sódio em ratos submetidos à hemorragia hipovolêmica." Universidade Federal de Goiás, 2018. http://repositorio.bc.ufg.br/tede/handle/tede/8778.
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Conselho Nacional de Pesquisa e Desenvolvimento Científico e Tecnológico - CNPq
Hemodynamic and cardiovascular benefits from the hypertonic saline solution (HS) use in the hypotensive hemorrhage (HH) treatment have been reported for several years. Recent investigations have shown the participation of central nervous system (CNS) regions, such as A1 neuronal clusters (located in the caudal ventrolateral medulla; CVLM), A2 neuronal clusters (located in the nucleus of the solitary tract; NTS) and the Median Preoptic Nucleus (MnPO) on hemodynamic responses induced by sodium chloride overload in normovolemic animals. However, the role of the above structures in cardiovascular recovery and autonomic changes induced by HS solution administration in animals submitted to HH has not yet been evaluated. Thus, the present study evaluated the A1, A2 neuronal clusters and MnPO nucleus involvement in the cardiovascular and autonomic responses promoted by HS solution infusion in hypovolemic animals. For this, wistar rats (280-320 g) were separated into four protocols: I. A2 neuronal cluster lesion (A2 Sham: n = 6; A2 Experimental: n = 6); II. A1 neuronal cluster lesion (A1 Sham: n = 6; A1 Experimental: n = 6); III. A1 and A2 neural clusters concomitant lesions (A1 + A2 Sham: n = 6; A1 + A2 Experimental: n = 6) and IV. Pharmacological inhibition of MnPO (MnPO Sham: n = 6; MnPO Experimental: n = 6). The animals of the first three protocols were anesthetized and subjected to saporin-anti-DβH nanoinjections for neuronal lesion (100 nL, 0.105 ng/nl) in experimental groups and Saporin nanoinjections (100 nL, 0.022 ng/nL) in sham groups for fictitious neuronal lesion, respectively, in the NTS, CVLM or simultaneously in the NTS and CVLM regions. After 20 days of recovery, the animals were anesthetized and instrumented to mean arterial pressure (MAP), heart rate (HR) and renal sympathetic nervous activity (RSNA) recordings. Then, HH was performed by blood withdrawal until MAP reached approximately 60 mmHg. After 20 min of HH, sodium overload (3M NaCl, 1.8 mL/g, 90 seconds of infusion, i.v) was conducted. In another series of experiments, MnPO Sham and MnPO Experimental groups were anesthetized and instrumented for MAP, HR and RSNA recordings. Then, the animals were submitted to HH and HS infusion at the end of the hemorrhage. GABAergic agonist Muscimol (4 mM, 100 nL, MnPO Experimental group) or saline nanoinjections (0.15 M, 100 nL, MnPO Sham group) were performed in the MnPO after 10 min from the start of HH. HH-induced hypotension, bradycardia and renal sympathoinhibition in the animals of the A2 Sham, A1 Sham, A1 + A2 Sham and MnPO Sham groups. In the sham groups, HS infusion after HH reestablished MAP, HR, and did not alter the renal sympathoinhibition generated during hypovolemia. In the A2 Experimental and A1 Experimental groups, the specific lesion of A1 or A2 neurons did not alter the hypotension, bradycardia and renal sympathoinhibition caused during HH. In addition, the A1 or A2 neurons specific lesion did not alter the reestablishment of MAP, HR and the RSNA reduction after HS solution infusion. However, in the animals of the A1 + A2 experimental group, the simultaneous A1 and A2 neurons lesion did not alter the decrease in MAP and HR observed during HH, but abolished renal sympathoinhibition. In addition, simultaneous A1 and A2 neurons lesion abolished MAP restoration and ANSR reduction after HS infusion, while HR restoration was not modified. In the MnPO experimental animals, MnPO nucleus inhibition did not alter the decrease in MAP and HR observed during HH, but abolished renal sympathoinhibition. However, MnPO inhibition abolished the MAP restoration and promoted strong sympathetic activation in the renal bed after HS infusion, while HR restoration was not modified. These results suggest that the A1, A2 neuronal clusters and MnPO nucleus are part of the integration and transmission information circuits about changes in plasma osmolarity, participating in cardiovascular and autonomic recovery induced by sodium chloride overload in animals submitted to HH.
Os benefícios hemodinâmicos e cardiovasculares provenientes do uso de solução salina hipertônica (SH) no tratamento da hemorragia hipotensiva (HH) são relatados há vários anos. Recentes investigações mostraram a participação de regiões do sistema nervoso central (SNC), como os grupamentos neuronais A1 (localizado na região caudoventrolateral do bulbo; CVLM), A2 (localizado no núcleo do tracto solitário; NTS) e do núcleo Pré-óptico mediano (MnPO) nas respostas hemodinâmicas induzidas pela sobrecarga de cloreto de sódio em animais normovolêmicos. Entretanto, o papel das estruturas acima relacionadas na recuperação cardiovascular e nas alterações autonômicas induzidas pela administração de solução SH em animais submetidos à HH ainda não foi avaliado. Assim, o presente estudo buscou avaliar o envolvimento dos grupamentos neuronais A1, A2 e do núcleo MnPO nas respostas cardiovasculares e autonômicas promovidas pela infusão de solução SH em animais hipovolêmicos. Para isto, ratos Wistar (280-320 g) foram separados em quatro protocolos: I. Lesão do grupamento neuronal A2 (Controle A2: n=6; Experimental A2: n=6); II. Lesão do grupamento neuronal A1 (Controle A1: n=6; Experimental A1: n=6); III. Lesões concomitantes dos grupamentos neuronais A1 e A2 (Controle A1 + A2: n=6; Experimental A1 + A2: n=6) e IV. Inibição farmacológica do núcleo MnPO (Controle MnPO: n=6; Experimental MnPO: n=6). Os animais dos três primeiros protocolos foram anestesiados e submetidos a nanoinjeções de saporina-anti-DβH para lesão neuronal (100 nL, 0,105 ng/nL) nos grupos experimentais e Saporina (100 nL, 0,022 ng/nL) nos grupos controles para lesão neuronal fictícia, respectivamente, no NTS, na região CVLM ou conjuntamente no NTS e CVLM. Após 20 dias de recuperação, os animais foram novamente anestesiados e instrumentalizados para registro da pressão arterial média (PAM), frequência cardíaca (FC) e atividade nervosa simpática renal (ANSR). Em seguida, a HH foi realizada através da retirada de sangue até que a PAM atingisse aproximadamente 60 mmHg. Após 20 min de HH foi conduzida a sobrecarga de sódio (NaCl 3M, 1,8 mL/kg, 90 segundos de infusão, i.v). Em outra série de experimentos, os animais dos grupos controle MnPO e Experimental MnPO foram anestesiados e instrumentalizados para registro da PAM, FC, ANSR. Em seguida, foram submetidos à HH e a infusão de solução SH ao final da hemorragia. Nanoinjeções do agonista GABAérgico, muscimol (4 mM, 100 nL, grupo experimental MnPO) ou salina (0,15 M; 100 nL; grupo controle MnPO) foram realizadas no MnPO após 10 min do início da HH. A HH promoveu hipotensão, bradicardia e simpatoinibição no território renal nos animais dos grupos controle A2, controle A1, controle A1 + A2 e controle MnPO. Nos grupos controle, a infusão de solução SH após a HH reestabeleceu a PAM, FC e não alterou a simpatoinibição renal gerada durante a hipovolemia. Nos animais dos grupos experimental A2 e experimental A1, a lesão especifica dos neurônios A1 ou A2 não alterou a hipotensão, bradicardia e simpatoinibição provocados durante a HH. Em adição, a lesão especifica dos neurônios A1 ou A2 não alterou o reestabelecimento da PAM, FC e a queda da ANSR gerada após a infusão de solução SH. Entretanto, nos animais do grupo experimental A1 + A2, a lesão simultânea dos neurônios A1 e A2 não alterou a queda da PAM, da FC observada durante a HH, mas aboliu a simpatoinibição renal. Ademais, a lesão simultânea dos neurônios A1 e A2 aboliu a restauração da PAM e a redução da ANSR após a infusão de solução SH, enquanto a restauração da FC não foi modificada. Nos animais do grupo experimental MnPO, a inibição do MnPO não alterou a queda da PAM e da FC observadas durante a HH, entretanto aboliu a simpatoinibição renal. Porém, a inibição do núcleo MnPO aboliu a restauração da PAM e promoveu forte simpatoexcitação no leito renal após a infusão de solução SH, enquanto a restauração da FC não foi modificada. Esses resultados sugerem que os neurônios dos grupamentos A1, A2 e o núcleo MnPO fazem parte dos circuitos de integração e transmissão de informações a respeito de mudanças na osmolaridade plasmática, participando da recuperação cardiovascular e autonômica induzida pela sobrecarga de cloreto de sódio em animais submetidos à HH.
Elalouf, Jean-Marc. "Regulation hormonale des fonctions physiologiques de la medullaire renale : effets de l'hormone antidiuretique, du glucagon, de la calcitonine et de l'hormone parathyroidienne." Paris 7, 1987. http://www.theses.fr/1987PA077007.
Full textAndrade, Fernanda Gonçalves de. "Estudo das alterações na expressão gênica dos ependimomas." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/5/5138/tde-01092014-154140/.
Full textEpendymomas are rare glial cell-derived tumors. They can be found in any central nervous system localization and despite the histological similarity, they seem to display distinct genomic abnormalities. Clinical variables are intercorrelated and they are usually unable to predict the disease course. We aimed to analyze increased gene and protein expression in ependymomas and to correlate with patients\' clinical data. We studied patients with ependymoma submitted to surgical resections at Hospital das Clinicas, University of São Paulo, from 1996 to 2011 (33 fresh-frozen samples for gene expression analysis by quantitative real-time PCR and 149 formalin-fixed, paraffin-embedded samples, relative to 121 patients due to relapses, for protein analysis by tissue microarray immunohistochemistry). Immunohistochemical reactions were analyzed semi-quantitatively and scored with a labeling index (LI) calculated as the product of the percentage of the positively stained nuclei by the intensity of staining. Eighty-one cases were adults (mean 27.2 years). There were 60 intracranial and 61 spinal cases, of which 10 tumors were myxopapillary, 92 were grade II and 19 were grade III. Gross total resection was achieved in 62% of cases and relapse was confirmed in 41.4% of cases. We observed a shorther time to relapse in children and supratentorial intracranial tumor localization (p<0.001 for both), anaplastic histology and incomplete resections (p<0.05 for both). The following genes were selected based on public SAGE database and literature: ARMC3, CCND1, CHST5, DNALI1, FGFRL1, GNA13, IGF2, MSX1, NOTCH1 and RSPH3. ARMC3, RSHL3, CHST5 and DNALI1 presented higher expression levels in intramedullary ependymomas (p < 0.05) and FGFRL1, NOTCH1 and CCND1 in supratentorial cases (p < 0.01). IGF2 presented higher expression levels in pediatric cases and CHST5 in adults cases (p < 0.05 in both). Higher expression levels of FGFRLI1 (p < 0.05), CCND1 and IGF2 (p < 0.01 for both) were observed in anaplastic histology cases. None of the genes impacted in progression free survival or overall survival of patients. The expression of protein codified by CCND1, cyclin D1, was also evaluated by immunohistochemistry, because its overexpression has been related with several types of neoplasias and its prognostic value has not yet been fully established in ependymomas. There was a correlation of cyclin D1 expression at mRNA and protein levels (p < 0.0001). Correlations between cyclin D1 and anaplastic histology and supratentorial localization were confirmed by protein analyses (p < 0.0001 for both parameters). Additionally, high expression of cyclin D1 was observed in younger patients (p < 0.01). The higher cyclin D1 expression in supratentorial tumor localization was independent of histological grade and age of patient. Relapse was more frequent in cases with higher cyclin D1 expression levels (p < 0.05) although correlation with progression free survival was just observed in gross total resection cases (p < 0.001). Ependymomas presented differential gene expression according to age, tumor localization and histological grade in our study. Determination of cyclin D1 expression levels may be useful to guide follow-up and treatment in supratentorial cases with gross total resection
Kim, Namhee. "A Large Water Diuresis during Hypoxia: Intervention with dDAVP and Furosemide." Thesis, 2011. http://hdl.handle.net/1807/31280.
Full text"Change of relative size of renal cortex and medulla related to age." 1997. http://library.cuhk.edu.hk/record=b5889290.
Full textThesis (M.Phil.)--Chinese University of Hong Kong, 1997.
Includes bibliographical references (leaves i-ix (last gp.)).
Acknowledgement --- p.i
Legend for graphs --- p.ii-iii
Legend for pictures --- p.iv
Legend for diagrams --- p.v
Legend for tables --- p.vi
Abstract --- p.vii-viii
Introduction --- p.1-17
Chapter 1 --- Known Anatomy and Physiology --- p.1-2
Chapter 2 --- The Nephron --- p.3-4
Chapter 3 --- Renal Vasculature --- p.5-7
Chapter 4 --- Summary of renal anatomy from infancy to children from review of literature --- p.8
Chapter 5 --- Function of the kidney --- p.9-17
Imaging Background --- p.18-23
Chapter 1 --- Neonates and infants kidneys- sonographic appearance of echogenicity --- p.18-19
Chapter 2 --- Prominence of medullary pyramicd (MP) --- p.20-21
Chapter 3 --- Morphometric Studies --- p.22-23
Aim of Study --- p.24
Method --- p.24-41
Chapter 1 --- Method --- p.24-30
Chapter 2 --- """Limitations"" to the technique" --- p.30-34
Chapter 3 --- Establishing the technique --- p.35-41
Results --- p.42-62
Chapter 1 --- Comparison of kidney length with age --- p.42-44
Chapter 2 --- Corticomedullary and age relationship --- p.45-48
Chapter 3 --- Medullary thickness correlated with age --- p.48-52
Chapter 4 --- Sum of the cortical thickness and medullary thickness versus kidney length --- p.53-54
Chapter 5 --- Compare CMR with kidney length and --- p.55-56
Chapter 6 --- CMR versus age --- p.57-59
Chapter 7 --- Mean of CMR related to age group --- p.57-59
Chapter 8 --- Compare CMR with kidney length and age --- p.60
Chapter 9 --- Compare gender and CMR --- p.60-61
Chapter 10 --- Compare laterality and CMR --- p.60
Result summary --- p.62
Discussion --- p.63-84
Chapter 1 --- Cortex --- p.63-65
Chapter 1.1 --- Cortex: anatomy --- p.66-67
Chapter 1.2 --- Cortex: physiology --- p.67-76
Chapter 2 --- Medulla --- p.76-81
Chapter 2.1 --- Medulla: anatomy --- p.76
Chapter 2.2 --- Medulla: physiology --- p.76-81
Chapter 3 --- "Corticomedullary ratio, CMR" --- p.82-83
Chapter 4 --- CMR and Kidney Length --- p.83
Chapter 5 --- "The CMR, Kidney Length and Age" --- p.83
Chapter 6 --- Corticomedullary Ratio and its relationship to actual corticomedullary volume ratio --- p.84
Chapter 7 --- "Laterality, Sex of the subjects" --- p.84
Implications --- p.84-94
Clinical pathological cases and corticomedullary ratio CMR --- p.90-94
Conclusion --- p.94-95
Appendix --- p.96-103
Chapter 1 --- Morphologic Development and Anatomy of the Kidneys and Urinary Tract --- p.96-98
Chapter 2 --- Renal Perfusion and Glomerular Filtration --- p.99-101
Chapter 3 --- Classification of renal diseases --- p.102-103
References
"Renal cortical and medullary dimensions show disproportionate differences in physiological and pathological conditions." 2002. http://library.cuhk.edu.hk/record=b6073448.
Full text"August 2002."
Thesis (Ph.D.)--Chinese University of Hong Kong, 2002.
Includes bibliographical references (p. 188-205).
Electronic reproduction. Hong Kong : Chinese University of Hong Kong, [2012] System requirements: Adobe Acrobat Reader. Available via World Wide Web.
Mode of access: World Wide Web.
Abstracts in English and Chinese.