Dissertations / Theses on the topic 'Hematoxylin'
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Gandomkar, Ziba. "Added benefits of computer-assisted analysis of Hematoxylin-Eosin stained breast histopathological digital slides." Thesis, The University of Sydney, 2018. http://hdl.handle.net/2123/18991.
Full textMellbo, Johan, and Alisha Müller. "Utvärdering av "dumpingmetoden" vid otillräckligt dehydrerade vävnadsprover." Thesis, Hälsohögskolan, Högskolan i Jönköping, HHJ, Avd. för naturvetenskap och biomedicin, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-44598.
Full textA tissue that has been insufficiently dehydrated has to be fixed before it can continue through the histotechnological process. Currently, there are two established measures at the Pathology Laboratory, Department of Laboratory Medicine, Region Jönköping County. One of the methods is to put the sample in melted paraffin to give the tissue more support. The other method is to rehydrate the tissue followed by a new dehydration. The purpose of this study was to evaluate a third method called the “dumping method”. The “dumping method” involves a directly dehydration of the tissue, excluding rehydration. This method is currently being used on some of the skin and autopsy samples at the Pathology Laboratory. The “dumping method” would ease the work at the Laboratory since it is faster, requires fewer chemicals and can be automated, unlike the current available methods. The results from the study showed that an insufficiently dehydrated tissue can’t be restore to its original state. Never less it is possible to restore the tissue sufficiently for diagnosis. The “dumping method” eased the sectioning of all the tissue samples included in this study. For colon and tonsil tissues, the “dumping method” ensured higher quality of the haematoxylin and eosin staining than the current available methods. For skin tissues, however, the method of rehydration followed by a new dehydration resulted in the highest staining quality
Elfer, Katherine N., Andrew B. Sholl, Mei Wang, David B. Tulman, Sree H. Mandava, Benjamin R. Lee, and J. Quincy Brown. "DRAQ5 and Eosin (‘D&E’) as an Analog to Hematoxylin and Eosin for Rapid Fluorescence Histology of Fresh Tissues." PUBLIC LIBRARY SCIENCE, 2016. http://hdl.handle.net/10150/622490.
Full textVAZQUEZ, JORGE ARTURO. "NERVE FIBER DIAMETER MEASUREMENTS USING HEMATOXYLIN AND EOSIN STAINING AND BRIGHTFIELD MICROSCOPY TO ASSESS THE NOVEL METHOD OF CHARACTERIZING PERIPHERAL NERVE FIBER DISTRIBUTIONS BY GROUP DELAY." DigitalCommons@CalPoly, 2014. https://digitalcommons.calpoly.edu/theses/1293.
Full textGossler, Vanessa da Silva Alves. "AVALIAÇÃO DA PROLIFERAÇÃO CELULAR E ESPESSURA DO ENDOMÉTRIO DE CADELAS EM DIFERENTES PERÍODOS DO DIESTRO." Universidade do Oeste Paulista, 2015. http://bdtd.unoeste.br:8080/tede/handle/tede/730.
Full textThis study aimed to determine the histological features of the endometrium of biches, as well as the cell proliferation at specific moments of diestrus, 10, 20, 30, 40, 50 and 60 days post-ovulation, correlating the endometrial thickness with the uterine cell proliferation and the metabolic state (weight, blood glucose and plasma cholesterol) of the animals. Therefore, the right and left uterine horns of 26 clinically healthy bitches submitted to ovariohysterectomy were histologically analyzed 10, 20, 30, 40, 50 and 60 days post-ovulation. The hematoxylin-eosin and AgNOR staining techniques were performed. All parameters were evaluated by the Shapiro-Wilk normality assumption and the samples subjected to ANOVA and post-hoc Tukey test (p<0.05). The correlation between endometrial thickness and uterine cell proliferation, weight, blood glucose and plasma cholesterol of animals was observed using the Pearson method (p<0.05). The software used was BioEstat® version 5.0. It was concluded that the endometrial thickness did not differs between post-ovulation days and was not correlated with the uterine cell proliferation, weight, blood glucose or serum cholesterol of the bitches. However, there was greater cell proliferation at 40 days post-ovulation compared to 60 days.
O presente estudo teve o objetivo de determinar as características histológicas do endométrio de cadela, assim como a sua proliferação em momentos específicos do diestro nos dias 10, 20, 30, 40, 50 e 60 pós-ovulação, correlacionando a espessura do endométrio com o peso, glicemia e colesterol das cadelas.Para tanto, foram analisados histologicamente os cornos uterinos direito e esquerdo de 26 cadelas clinicamente sadias ovariohisterectomizadas aos 10, 20, 30, 40, 50 e 60 dias após a ovulação. Foram realizadas a coloração de hematoxilina-eosinae também a coloração pelo método de AgNOR. Todos os parâmetros foram avaliados pelo pressuposto de normalidade de Shapiro-Wilk e as amostras submetidas a ANOVA seguida de Tukey (p<0,05). A correlação entre espessura de endométrio e peso, glicemia e colesterol plasmático foi verificada pelo método de Pearson (p<0,05). O programa utilizado foi o BioEstat® versão 5.0. Conclui-se que a espessura do endométrio não difere entre os dias pós-ovulação e que não tem correlação com o peso, glicemia ou o colesterol sérico das cadelas. Porém, há uma maior proliferação celular aos 40 dias pós-ovulação em relação aos 60 dias.
Serafini, Suellen. "Utilização da biópsia de mucosa e submucosa retal para o diagnóstico da Moléstia de Hirschsprung." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/5/5141/tde-27102017-091421/.
Full textIntroduction: Hirschsprung disease (HD) is characterized by the absence of intramural neurons in variable segments of the large intestine, leading to intestinal subocclusion. In the most frequent form the rectum-sigmoid is compromised. Rectal biopsy is the histological method of choice in the diagnosis of HD. The hematoxylin and eosin (HE) method is classically used in histopathological practice. In this technique, a full-thickness rectum wall fragment is processed through paraffinization, to be later sectioned and stained by HE. This staining shows neural cells in normal intestines and hypertrophied nerve trunks in cases of HD. It is a very simple technique, still used today in the diagnosis of the disease, requiring large fragments of the rectum for a better diagnosis. This detail makes the diagnosis of the newborn more difficult. The staining histochemical methods more used are the research of acetylcholinesterase activity (AChE) and staining of calretinin. However, these techniques are not available in all centers and the possibility of diagnosing HD through HE staining in smaller fragments could be valuable alternative for services that do not have more specific techniques. Objectives: To evaluate the concordance of the results obtained by the HE staining and the calretinin method with the investigation of AChE activity in fragments of mucosa and submucosa in the diagnosis of Hirschsprung\'s disease. Methods: For this study, 50 cases from our laboratory were selected. The material was embedded in paraffin. Sixty levels of each fragment were made for HE and other 3 levels for calretinin. These slides were analyzed under microscope, photographed and classified as positive for HD when no nerve cells were found and there were nerve trunks present, and in negative in cases of visualization of the neurons. A blind study was carried out by two researchers. The results of reading the slides were compared with that of AChE. Results: Of the 50 cases evaluated by the HE technique, only 5 disagreed with the diagnosis performed by AChE, with a Kappa value of 0.800 and accuracy of 90%. In the comparison between calretinin and AChE, 8 cases disagreed, with a Kappa value of 0.676 and an accuracy of 84%. Conclusions: The concordance of results from AChE and HE methods was satisfactory, allowing the possibility of the use of the HE method in fragments of mucosa and submucosa as valid alternative for the diagnosis of HD. The immunohistochemical technique of Calretinin did not show a good agreement with the AChE activity in our study
Oliveira, Mariane de Souza. "Tolerância de variedades de cana-de-açúcar (Saccharum spp.) à toxidez por alumínio em solução." Universidade Federal de São Carlos, 2012. https://repositorio.ufscar.br/handle/ufscar/8.
Full textUniversidade Federal de Minas Gerais
The influence of toxic aluminum (Al) on root development and absorption of water and nutrients has been identified as a major cause of low productivity of many soils. The theoretical and experimental study on the tolerance of varieties of sugarcane to adverse conditions of extreme acidity and, especially, high Al saturation, is still inconclusive The objectives of this study were: to develop and propose an experimental protocol for the study tolerance of varieties of sugarcane to Al in solution and to study the sensitivity of nine varieties of sugarcane (RB928064, RB966928, RB937570, RB855156, RB855453, RB935744, RB867515, RB925345, SP813250) to Al stress solution through a series of analyzes: (a) review the allocation of the Al at the tip roots, (b) observation of the root apices and (c) root growth; identify the main changes in the root; identify the critical dose to the Al root growth and identify the most efficient method for the classification of varieties on the Al in solution. The experiment was conducted in laboratory conditions in a completely randomized design with three replications. After the germination period, the mini-stalks of sugarcane were acclimated in tanks with nutrient solution. After six days, the mini-cuttings were transferred to containers with nutrient solution and increasing doses of Al (0, 130, 380, 500, 800, 1000, 1400, 2000, 3000 and 4000 μmol L -¹), where they remained for six days and subsequently were removed for analyzes. The development of the experimental protocol was efficient for the evaluation of tolerance and its main factors were germination method, selecting the range of Al concentration in solution and the methods of tolerance assessment. The varieties differed in Al tolerance according to the analyzes. The main changes of the tip root were mucilage production, loss of epidermal cells of the root cap and its disintegration, and brown staining of root tips. The root elongation rate (TAR) depended on the interaction between variety and concentration of Al, and, for the varieties studied, the critical value ranged from 130 to 3000 μmol L-¹. The TAR method was considered more efficient to evaluate the tolerance of varieties of sugarcane to Al in solution and in accordance with this method the varieties were classified as tolerance in the following order: RB928064 > RB935744 > RB855453 = RB966928 > RB925345 = RB867515 > SP813250 > RB855156 > RB937570.
A influência da toxidez por alumínio (Al) sobre o desenvolvimento do sistema radicular e a absorção de água e de nutrientes tem sido apontada como uma das principais causas da baixa produtividade de muitos solos. O referencial teórico e experimental sobre a tolerância de variedades de cana-de-açúcar a condições adversas de acidez extrema e, principalmente, à alta saturação por Al, ainda é inconclusivo Os objetivos deste estudo foram: desenvolver e sugerir um protocolo experimental para o estudo da tolerância de variedades de cana-de-açúcar ao Al em solução; estudar a sensibilidade de 9 variedades de cana-de-açúcar (RB928064, RB966928, RB937570, RB855156, RB855453, RB935744, RB867515, RB925345 e SP813250) ao estresse por Al em solução através de um conjunto de análises: (a) exame da alocação do Al na extremidade das raízes; (b) observação do ápice radicular e (c) crescimento radicular; identificar as principais alterações na raiz; identificar a dose crítica de Al ao crescimento radicular e identificar o método mais eficiente para a classificação das variedades quanto ao Al em solução. O experimento foi conduzido em condições de laboratório em delineamento inteiramente casualizado, com três repetições. Após o período de germinação, os mini-toletes de cana-de-açúcar foram aclimatados em tanques com solução nutritiva. Após seis dias, os mini-toletes foram transferidos para recipientes com solução nutritiva e doses crescentes de Al (0, 130, 380, 500, 800, 1000, 1400, 2000, 3000 e 4000 μmol L-¹), onde permaneceram por seis dias e posteriormente foram retirados para análises. O desenvolvimento do protocolo experimental foi eficiente para a avaliação da tolerância e seus principais fatores foram método de germinação, seleção da faixa de concentração de Al em solução e os métodos de avaliação da tolerância. As variedades apresentaram diferenças quanto à tolerância ao Al de acordo com as análises realizadas. As principais alterações dos ápices radiculares foram a produção de mucilagem, perda de células epidérmicas da coifa, desintegração da coifa e coloração parda. A taxa de alongamento radicular (TAR) dependeu da interação entre variedade e concentração de Al, sendo que, para as variedades estudadas, o valor crítico variou de 130 a 3000 μmol L-1. O método de TAR foi considerado o mais eficiente para a avaliação da tolerância de variedades de cana-de-açúcar ao Al em solução e de acordo com esse método as variedades foram classificadas quanto a tolerância na seguinte ordem: RB928064 > RB935744 > RB855453 = RB966928 > RB925345 = RB867515 > SP813250 > RB855156 > RB937570.
Islam, Mohammed Anowarul. "Responses of accessions of Austrodanthonia spp. to factors associated with soil acidity." Thesis, The University of Sydney, 2002. http://hdl.handle.net/2123/502.
Full textIslam, Mohammed Anowarul. "Responses of accessions of Austrodanthonia spp. to factors associated with soil acidity." University of Sydney. Food and Natural Resources, 2002. http://hdl.handle.net/2123/502.
Full textPinna, Fabio de Rezende. "Distribuição do neuroepitélio olfatório em concha média e superior em cadáveres humanos." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/5/5143/tde-19112008-162629/.
Full textINTRODUCTION: Olfactory neuroepithelium (ON) biopsy provides perspectives for several therapeutic applications, both in disorders of olfaction and in neurodegenerative diseases. Successful in vivo collection of ON is still not routine, due to a dearth of studies on ON distribution in the superior and middle turbinate (ST and MT respectively). This study describes the distribution of ON in cadaver ST and MT as determined by complete endoscopic removal of turbinates and histological analysis with hematoxylin and eosin (H&E) and immunohistochemical staining. We also analyzed the influence of gender, age, and naris side on the extent to which ON is present in the superior and middle turbinate. CASE SELECTION AND METHODS: We conducted a prospective anatomical study from March 2006 to January 2008. The superior and middle turbinates of 25 fresh cadavers (less than 12 hours post-mortem) were removed endoscopically. Each turbinate was halved into anterior and posterior fragments. Eight anatomically distinct fragments were therefore obtained from each of the 25 cadavers for a total of 200 specimens, which were analyzed through H&E staining and immunohistochemistry. Hematoxylin and eosin-stained slides were subjected to blind examination by three independent pathologists; ON distribution was graded on a fivepoint numeric scale (grade 0, 1, 2, 3, or 4). Immunohistochemistry was only positive through S-100 staining. Pairwise agreement between pathologists was assessed by means of the Kappa coefficient. The distribution of ON was analyzed regarding age, gender, time elapsed between death and specimen harvesting, symmetry between nares, and accuracy of immunohistochemistry results. RESULTS: In H&E-stained slides, olfactory neuroepithelium was present in 82.9% of ST and 17.1% of MT specimens; prevalence in the superior turbinate was therefore 4.9-fold greater (p < 0.001). Immunohistochemical analysis was able to identify ON in 15 fragments, 10 of which (20%) were from the posterior half of the superior turbinate; the remaining five specimens (7.6%) were from the anterior ST. According to prevalence ratio, the odds of finding ON are 4.9 times greater in superior turbinate than in the middle turbinate (CI, 95%; 3.37.4). Of the 15 immunohistochemistry-positive fragments, seven were assigned distribution grade 3 (>50% and 75% presence of ON) on H&E staining seven others were graded 4 (>75% presence of ON). A single immunohistochemistrypositive fragment was found to have grade 2 ON distribution (i.e., it contained 26% to 50% olfactory neuroepithelium) on H&E staining. S-100 staining showed a sensitivity of 13.5% and specificity of 100% for ON detection. There was no statistically significant difference in ON prevalence when fragments were compared according to gender, age at time of death, and naris side. However, when we analyzed ON presence according to the degree of ON distribution in each side, we found no concordance. CONCLUSIONS: Total ON was distributed symmetrically between nares, but we found no concordance between sides in the manner in which ON is distributed. ON is most likely to be found in the posterior half of the superior turbinate. Hematoxylin and eosin (H&E) staining is an effective method for distinguishing ON from respiratory epithelium, as shown by high inter-rater agreement among three independent pathologists
Hung, Shu Miao, and 洪淑妙. "The Study of Hematoxylin and Basic Semipermanent Hair Dyes on Melanogenesis in B16-F10 Cells." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/q9753e.
Full text靜宜大學
化粧品科學系
104
In this study, we focus on the effects of commonly used hair dyes , such as Basic red 51, Basic red 76, Basic blue 99 and Hematoxylin on melanogenesis in B16-F10 cells. Firstly, we use MTT assay to confirm the non-cytotoxic concentrations of these agents. Subsequently, these agents were used to test the effects on melanin production, tyrosinase activity and the expressions of microphthalmia-associated transcription factor (MITF) and tyrosinase.The results showed that: Under non-cytotoxic concentrations, Basic red 51, Basic red 76, Basic blue 99 generate no significant role for B16-F10. However Hematoxylin exhibits significantly increased melanin production. Our results indicated that Hematoxylin has abilities to increase the melanin productions of 14.7 %. Hematoxylin has ability to increase the tyrosinase activity 15.2 %. Hematoxylin has ability to increase tyrosinase activity approximately 1.29 fold of control in tyrosinase zymography and also protein levels of MITF and tyrosinase. Therefore, Hematoxylin can evidently increase the production of melanin in B16-F10 Cells.
Zsáková, Emily. "Interference redukujících látek s hematoxylinovým stanovením chelatace měďnatých iontů." Master's thesis, 2019. http://www.nusl.cz/ntk/nusl-397845.
Full textLomozová, Zuzana. "Interakce tamarixetinu a isorhamnetinu s mědí." Master's thesis, 2019. http://www.nusl.cz/ntk/nusl-403983.
Full textZemanová, Kamila. "Interakce fenylpropionových kyselin s mědí." Master's thesis, 2017. http://www.nusl.cz/ntk/nusl-361786.
Full textNěmcová, Hana. "Porovnání interakcí ekvolu a desmethylangolensinu se železem a mědí." Master's thesis, 2018. http://www.nusl.cz/ntk/nusl-388886.
Full textGajjar, Hetal. "Untersuchung von osteoarthrotisch geschädigten Kiefergelenken an geeigneten Knockout-Maus-Modellen." Doctoral thesis, 2012. http://hdl.handle.net/11858/00-1735-0000-000D-EFD5-1.
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