Auswahl der wissenschaftlichen Literatur zum Thema „Rabbits Anatomy“
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Zeitschriftenartikel zum Thema "Rabbits Anatomy":
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Reichert, P., R. Rutowski, Z. Kiełbowicz, J. Kuryszko, M. Kiełbowicz, Ł. Michalak und A. Bocheńska. „The rabbit brachial plexus as an experimental model – anatomy and surgical approach“. Polish Journal of Veterinary Sciences 17, Nr. 2 (01.06.2014): 339–45. http://dx.doi.org/10.2478/pjvs-2014-0046.
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AbstractThe aim of our study was to analyze the anatomy and surgical approach of the rabbit brachial plexus. The research included 18 rabbits. The rabbit seems to be a good experimental model for spinal nerves injury, especially for the C5 and C6 segments. The anatomical structure of the rabbit’s brachial plexus is similar to the human brachial plexus. The structure of the rabbit C5 and C6 segments is analogous to the human structure. The spinal nerves of the C5 and C6 segments in the rabbit are wide and long enough for microsurgical procedures
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Crossley, David A. „Clinical Aspects of Lagomorph Dental Anatomy: The Rabbit (Oryctolagus cuniculus)“. Journal of Veterinary Dentistry 12, Nr. 4 (Dezember 1995): 137–40. http://dx.doi.org/10.1177/089875649501200402.
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The lagomorphs most commonly encountered as pets are rabbits. There are many breeds of domestic rabbit, varying from dwarf varieties with an adult weight of under one kilogram to giants weighing 10kg. This article provides a working knowledge of the dental anatomy and physiology of rabbits so that veterinarians can interpret clinical and radiographic findings when investigating rabbits with suspected dental disease.
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Greenaway, JB, GD Partlow, NL Gonsholt und KR Fisher. „Anatomy of the lumbosacral spinal cord in rabbits“. Journal of the American Animal Hospital Association 37, Nr. 1 (01.01.2001): 27–34. http://dx.doi.org/10.5326/15473317-37-1-27.
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This study provides an accurate, anatomical description of the rabbit's lumbosacral spinal cord. Following humane euthanasia, 64 rabbits were radiographed and dissected. The number of thoracic (T) and lumbar (L) vertebrae was 12T/7L in 43.8%, 13T/6L in 32.8%, and 13T/7L in 23.4% in the 64 rabbits studied. The 13th ribs were rudimentary, asymmetric, or both in 15 animals. The spinal cord terminated within the second sacral vertebra (S2) in 79.3%, within the first sacral vertebra (S1) in 19.0%, and within the third sacral vertebra (S3) in 1.7% of the sample. Spinal nerve contributions to the femoral, obturator, sciatic, and pudendal nerves were determined. Formulas to predict the termination of the cord relative to the vertebral column were established. Age, weight, sex, and method of preparation did not show a significant correlation with the length of the spinal cord.
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Worthley, S. G., M. Roque, G. Helft, K. Soundararajan, M. Siddiqui und E. D. Reis. „Rapid oral endotracheal intubation with a fibre-optic scope in rabbits: a simple and reliable technique“. Laboratory Animals 34, Nr. 2 (01.04.2000): 199–201. http://dx.doi.org/10.1258/002367700780457554.
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The orotracheal intubation of rabbits is complicated by their oropharyngeal anatomy. Numerous techniques to intubate rabbits have been described; however, these methods require specialized devices, tracheostomy, or are performed in a blind fashion. We describe a technique for the intubation of the rabbit under direct visualization with a standard, small-bore, fibre-optic laparoscope, which is both rapid and simple to perform.
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Claassen, E., und L. T. Adler. „Sequential double immunocytochemical staining for in situ identification of an auto-anti-allotype immune response in allotype-suppressed rabbits.“ Journal of Histochemistry & Cytochemistry 36, Nr. 12 (Dezember 1988): 1455–61. http://dx.doi.org/10.1177/36.12.3057069.
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Immunocytochemical staining has been used to detect putative autoimmune B-cells in rabbits undergoing chronic allotype suppression. This condition is seen in heterozygous rabbits exposed perinatally to antibody against the paternal immunoglobulin allotype. Such animals develop lifelong suppression for this allotype and have been used as models for study of antibody-induced disturbance of immune regulation. Normal rabbits deliberately immunized against a heterologous allotype were used to establish the feasibility of identifying cells forming anti-allotypic antibodies in cryostat sections of rabbit lymphoid tissues. Incubation and staining of tissue sections from suppressed rabbits then revealed the presence of autoimmune B-cells, with antibody specificity for the suppressed allotype, in all chronically suppressed adult rabbits tested. Sequential incubation and staining with allotype- and anti-allotype-enzyme conjugates established that such cells were of non-suppressed origin. Auto-anti-allotype antibody-forming cells were not found in normal heterozygotes or in chimeric rabbits. The immunocytochemical techniques described here permitted simultaneous detection of specificity (i.e., anti-allotype) and origin (allotype) of antibody-forming cells involved in an autoimmune response, as well as their anatomical correlation with other B-cells of suppressed or non-suppressed origin. Since the method described can be adapted to detection of alternate cell markers, we believe it to have potential application to the study of other autoimmune phenomena.
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Regalado, Adriana, und Loïc Legendre. „Full-Mouth Intraoral Radiographic Survey in Rabbits“. Journal of Veterinary Dentistry 34, Nr. 3 (16.08.2017): 190–200. http://dx.doi.org/10.1177/0898756417723145.
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Dental pathologies are highly prevalent in pet rabbit populations, making oral radiography an essential tool in the evaluation of lagomorph dentitions. The unique anatomy of the rabbit’s mouth limits the examination of the conscious animal to the rostral portion of it's mouth. In addition, the oral examination of an aradicular hypsodont tooth is restricted to the short coronal fraction of its crown. Erstwhile images obtained by the extraoral technique were once considered the most practical and informative tool in rabbit dentistry; however, limited visualization of the key structures of individual teeth became the major drawback of this technique. As new imaging technologies are becoming widely available and affordable for veterinarians, intraoral radiography offers the ability to prevent, diagnose, and treat oral pathologies in lagomorphs. This article describes a step-by-step procedure to obtain a full-mouth radiographic survey in rabbits. For this technique, a standard dental X-ray generator and intraoral storage phosphor plates are used while applying the bisecting angle technique. Among the advantages of this technique are detailed visualization of internal and external dental structures, identification of early lesions, and detection of occult pathologies. Furthermore, intraoral images offer superior resolution and higher diagnostic quality with minimal radiation exposure, making this method safer for the veterinarian, staff members, and their patients.
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Chmurska, Maria, Natalia Sowińska und Agnieszka Pietsch-Fulbiszewska. „Dental anesthesia in small mammals on the example of domestic rabbits“. Medycyna Weterynaryjna 73, Nr. 4 (2017): 208–13. http://dx.doi.org/10.21521/mw.5682.
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The domestic rabbit (Oryctolagus cuniculus f. domesticus) has become a very popular companion animal kept at present in Europe. Dental problems in rabbits are prevalent. The medical procedure in these patients is based primarily on surgical treatment, which is associated with pain during treatment. This paper aims to familiarize readers with the techniques of local anesthesia, which can be used in dentistry of the domestic rabbit. The study summarizes the specifics of the anatomy of the rabbit skull. On the basis of original papers, in which the domestic rabbit or other small mammals were the research model, the drugs used for local anesthesia and techniques of local anesthesia with possible complications have been described in the present work.
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Morrissey, Patrick J., Kevin R. Murphy, Jean M. Daley, Lorraine Schofield, Nilufer N. Turan, Karuppiah Arunachalam, J. Dawn Abbott und Gideon Koren. „A novel method of standardized myocardial infarction in aged rabbits“. American Journal of Physiology-Heart and Circulatory Physiology 312, Nr. 5 (01.05.2017): H959—H967. http://dx.doi.org/10.1152/ajpheart.00582.2016.
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The incidence of both myocardial infarction (MI) and sudden cardiac death increases with age. Here, we describe the development of a minimally invasive large animal model of MI that can be applied to young or aged animals. We demonstrate that rabbit coronary anatomy is highly variable, more so than described in previous literature. In this work, we categorize the coronary pattern of 37 young rabbits and 64 aged rabbits. Aged rabbits had a higher degree of branching from the left main coronary artery. Standardizing the model across age cohorts required a new approach, targeting an area of myocardium rather than a specific vessel. Here, we present a method for achieving a reproducible infarct size, one that yielded a consistent scar encompassing ~30% of the apical left ventricular free wall. The model’s consistency allowed for more valid comparisons of MI sequelae between age cohorts. NEW & NOTEWORTHY This study describes the coronary angiographic imaging of young and aged rabbits. We developed and improved a novel minimally invasive approach for coil embolization that targets a specific area of myocardium and yielded a consistent scar encompassing ~30% of the left ventricular free wall of young and aged rabbit hearts.
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Rich, K. J., J. R. Foster, R. J. Edwards, D. S. Davies und A. R. Boobis. „Ontogenetic development of the distribution of constitutive and 3-methylcholanthrene-induced CYP1A1 and CYP1A2 in rabbit liver.“ Journal of Histochemistry & Cytochemistry 41, Nr. 6 (Juni 1993): 915–25. http://dx.doi.org/10.1177/41.6.8315282.
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We investigated the expression, distribution, and inducibility of 3-methylcholanthrene (MC)-inducible P450 enzymes, CYP1A1 and 1A2, in livers of rabbits at different stages of development, ranging from 4 days before birth (-4 days of age) to adulthood. These enzymes were identified by immunoblotting and immunocytochemistry and quantified by dot-blotting, utilizing previously characterized monoclonal antibodies, 107 and 3/4/2, specific for CYP1A2 and both CYP1A1 and 1A2, respectively, and a polyclonal antibody that recognizes both enzymes. Expression of CYP1A2 is always greater than that of CYP1A1 in livers of untreated rabbits, regardless of age. Moreover, immunocytochemistry showed that CYP1A1 is evenly distributed throughout the liver at all ages, whereas CYP1A2 is highly localized to only a few scattered cells at 1 day before birth. More hepatocytes express this enzyme perinatally. By 6 days of age, expression of CYP1A2 is confined to a narrow band of centrilobular cells, but with increasing age the enzyme is expressed in more hepatocytes until weaning, when all hepatocytes are positive. Although CYP1A1 is induced by MC treatment at most ages, there is no change in its distribution. In contrast, induction of CYP1A2 was shown immunocytochemically to occur in only a limited number of hepatocytes in fetal rabbits. There is a progressive increase with age in the number of hepatocytes that are inducible for CYP1A2. The greatest fold-induction of hepatic CYP1A2 by MC in the rabbit is a 9-11 days of age, when, for MC-treated rabbits, CYP1A2 represents > 60% of the total P450 pool. The modulation of enzyme expression caused by MC treatment of fetuses/neonates leads to developmentally advanced livers with respect to P450 and could have a significant impact on the fetal and neonatal toxicity of some foreign compounds. These data demonstrate, for the first time, that the ontogenetic expression and localization of CYP1A1 and 1A2 within the liver are differentially regulated at the level of the individual cell.
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Feldenzer, John A., Paul E. McKeever, Dennis R. Schaberg, John A. Campbell und Julian T. Hoff. „The pathogenesis of spinal epidural abscess: microangiographic studies in an experimental model“. Journal of Neurosurgery 69, Nr. 1 (Juli 1988): 110–14. http://dx.doi.org/10.3171/jns.1988.69.1.0110.
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✓ An experimental model of spinal epidural abscess was developed in rabbits by injecting Staphylococcus aureus into the posterior thoracolumbar epidural space. This model has been shown to reproduce the neurological, bacteriological, and radiological aspects of the human disease. In this study, the effect of the infectious epidural mass on the vasculature of the spinal cord in paraplegic rabbits was studied using microangiographic techniques. The normal vascular anatomy of the rabbit spinal cord was defined in control experiments. Vascular proliferation was demonstrated in the epidural space surrounding the abscesses. Anterior and paired posterior spinal arteries remained patent in paraplegic rabbits with mild or moderate spinal cord compression and in some cases of severe compression. In animals with severe compression, the anterior epidural venous plexus remained patent, but the dorsal spinal vein was occluded. Occlusion of perforating arteries occurred only with extreme spinal cord compression. These data indicate that the initial neurological deficit associated with experimental spinal epidural abscess is not due to vascular thrombosis.
Dissertationen zum Thema "Rabbits Anatomy":
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Meller, Stephen Trevor. „The Anatomy of the periaqueductal gray in the rabbit / by Stephen Trevor Meller“. Title page, contents and summary only, 1987. http://web4.library.adelaide.edu.au/theses/09PH/09phm5255.pdf.
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Chubb, Emma E. „THE IMPACT OF ORAL AFFERENTS ON JAW MOVEMENTS IN RABBITS“. Ohio University Honors Tutorial College / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=ouhonors1587404966088487.
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Mendoza, Gabriel Errol Mendizabal. „Avaliação experimental em coelhos do posicionamento do enxerto autólogo osteocondral em diferentes profundidades“. Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/5/5140/tde-29112017-095459/.
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Lesões da cartilagem articular podem ser tratadas por meio de cirurgia de transplante osteocondral autólogo. Esta cirurgia baseia-se na colocação de cilindros osteocondrais em áreas de lesão da cartilagem articular. O objetivo principal deste estudo foi avaliar as consequências histológicas das variações de posicionamento de enxertos osteocondrais cilíndricos: no mesmo nível e desnivelados (salientes ou profundos) em relação à superfície articular. Neste estudo, foram utilizados vinte coelhos fêmeos adultas, albinos, da raça Nova Zelândia. Defeitos cilíndricos osteocondrais de três milímetros de diâmetro e três milímetros de profundidade foram tratados por esta técnica cirúrgica. Os enxertos foram posicionados aleatoriamente em três formas: ao mesmo nível da superfície articular, profundos e salientes em relação à superfície articular. Realizou-se análise macroscópica e histológica após doze semanas de evolução. Como resultados, observamos que as avaliações macroscópicas e histológicas mostraram diferenças entre os três tipos de posicionamentos. Os enxertos posicionados ao mesmo nível da superfície articular obtiveram melhores resultados. Os resultados dos enxertos posicionados salientes à superfície articular foram melhores do que os dos enxertos posicionados profundos em relação ao nível articularThe treatment of symptomatic chondral lesions aims to restore function similar to that observed before the lesion. Autologous osteochondral transplantation is a surgical procedure that consists of filling a full-thickness articular cartilage defect with normal cartilage. The main objective of this study was to evaluate the histological consequences of the positional incompatibilities of cylindrical osteochondral grafts placed either flush with the articular surface or protruding/recessed. Two experimental groups of 10 rabbits each were randomly established regarding the positioning of the osteochondral autograft: in 1 knee, the graft was implanted either protruding or recessed with respect to the articular surface, and the graft was implanted at the level of the articular surface in the other graft. The protruding graft was placed 2 mm above the level of the articular cartilage, and the recessed graft was placed 1 mm below the level of the articular cartilage. After euthanasia, the articular cartilage was macroscopically evaluated according to the scale published by Goebel et al. and histologically evaluated by haematoxylin-eosin and safranin-O staining according to the International Cartilage Repair Society (ICRS) II classification. The evaluated parameters did not significantly differ between the protruding and recessed groups, whereas flush positioning resulted in better scores according to the Goebel et al. scale and the ICRS II classification. Recessed and protruding positioning relative to the articular surface did not produce different results
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Silva, Ronald Bispo Barreto da. „Estudo experimental em coelhos do efeito do ácido hialurônico na apoptose pós-traumática de condrócitos“. Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/5/5140/tde-21062012-160928/.
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O objetivo deste estudo foi avaliar se a injeção intra-articular em altas doses de ácido hialurônico, imediatamente após o trauma, pode reduzir a apoptose de condrócitos. Para cumprir este objetivo foi desenvolvido um estudo experimental com 40 joelhos de coelhos adultos. Os animais foram anestesiados e, em seguida, cada joelho sofreu três contusões com um bloco de 1 kg, solto por meio de um cilindro, a 1 metro de altura. Logo após as contusões, foram administrados, no mesmo coelho, 2 ml de ácido hialurônico em um joelho e 2 ml de solução salina no outro. Desta forma, obteve-se uma intervenção pareada, com melhora do poder estatístico do estudo. As doses foram repetidas a cada 3 ou 4 dias por 30 dias. Os coelhos foram mantidos no mesmo ambiente sob controle de temperatura, de atividades diárias e de alimentação. Após 30 dias, os animais foram abatidos e, por meio de artrotomia, foram realizadas as coletas da cartilagem do côndilo femoral medial e da tróclea de cada joelho. As peças foram preparadas para análise em microscopia óptica e coloração por TUNEL. Os indivíduos envolvidos no preparo e análise das peças não tiveram qualquer tipo de informação a respeito do experimento. A análise estatística foi feita pelo Teste t-student para dados pareados na comparação entre o grupo ácido hialurônico (AH) e o grupo controle. Foram analisados um total de 36 joelhos e obteve-se uma redução significativa (p<0,001) na taxa de apoptose de 68,01% (+ 19,73) do grupo controle para 53,52% (+ 18,09) do grupo AH. Diante dos resultados, concluiu-se que a injeção intra-articular de altas doses de ácido hialurônico, iniciando imediatamente após o trauma, reduz as taxas de apoptose (pós-traumática) de condrócitos de coelhosThe aim of this study was to assess whether intra-articular injection of high doses of hyaluronic acid immediately after trauma, can reduce apoptosis of chondrocytes. We have developed an experimental study with forty knees of adult rabbits. Animals were anesthetized and each one had had three knee injuries with a block of 1kg, released through a cylinder, 1 meter tall. After the bruises, 2ml of hyaluronic acid were injected in one knee and 2ml saline in the other. Doses were repeated each 3 or 4 days during 30 days. Rabbits were kept in the same environment under controlled temperature, daily activities and meals. Thirty days later, animals have been sacrificed. The cartilage of the medial femoral condyle and trochlea of each knee was retrieved with a scalpel by artrothomy. Specimens were prepared for optical microscopy and TUNEL staining. No information about the experiment was given to individuals who were involved in the preparation and analysis of the slides. Statistical analysis was performed by Students t test for paired data when comparing a group of hyaluronic acid (HA) and control group. We have analyzed a total of 36 knees and have obtained a significant reduction (p <0.001) in apoptosis rate of 68.01% (+ 19.73) for the control group 53.52% (+ 18.09) in the HA group. We conclude that the intraarticular injection of high doses of hyaluronic acid starting immediately after trauma, reduces impact-induced chondrocytes apoptosis rates in rabbits
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Reiff, Rodrigo Bezerra de Menezes. „Reparo de defeito osteocondral no joelho de coelhos utilizando centrifugado de medula óssea autóloga“. Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/5/5140/tde-27092010-155257/.
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A cartilagem articular, por sua natureza avascular, apresenta uma capacidade limitada de regeneração. Uma abordagem terapêutica para o tratamento de defeitos da cartilagem consiste na utilização de células ou tecidos aplicados ao local da lesão. O objetivo deste estudo foi avaliar o efeito da aplicação de centrifugado de medula óssea autóloga em lesões osteocondrais no joelho de coelhos, em comparação com um grupo controle de lesões osteocondrais sem preenchimento, analisando o comportamento histológico destes grupos em função do tempo. Foram utilizados doze coelhos da raça Nova Zelândia, albinos, machos, adultos, submetidos a uma lesão osteocondral, de 4 mm de diâmetro e 3 mm de profundidade, em ambos os joelhos, na região da tróclea femoral. Nos joelhos direitos, que constituíram o Grupo Estudo, o defeito osteocondral foi preenchido por um coágulo de células mesenquimais, obtidas por centrifugação de um aspirado da medula óssea e selado com cola de fibrina. Nos joelhos esquerdos, que constituíram o Grupo Controle, o defeito osteocondral não recebeu qualquer preenchimento. Os animais foram divididos em três grupos de quatro coelhos, estudados após oito, 16 e 24 semanas. Os resultados foram descritos com base em uma escala de pontuação histológica que avaliou a morfologia celular, a reconstrução do osso subcondral, o aspecto da matriz, o preenchimento do defeito, a regularidade da superfície e a conexão das margens. A análise estatística foi realizada pelo Teste t-student para dados pareados na comparação entre Grupo Estudo e Grupo Controle. Para as comparações através do fator temporal, utilizou-se o Teste ANOVA one way. Com 5% de confiança, rejeitou-se a hipótese de igualdade entre os Grupos Estudo e Controle. Notou-se uma distância decrescente entre os escores dos Grupos Estudo e Controle com o aumento do tempo, bem como uma tendência crescente do valor da escala para o Grupo Controle. Concluiu-se que a aplicação de centrifugado de medula óssea em defeitos osteocondrais no joelho de coelhos mostrou melhor resultado na avaliação histológica, em comparação ao Grupo Controle. Analisando a evolução dos grupos através do tempo, houve uma aproximação de seus escores histológicos, sobretudo pelo aumento observado no Grupo ControleThe articular cartilage, due to its avascular nature, presents a limited regeneration capacity. A therapeutical approach to the treatment of cartilage defects consists of the utilization of cells or tissues applied to the lesion site. The aim of this study was to evaluate the effect of applying autologous bone marrow centrifuged in osteochondral lesions in the knees of rabbits, compared to a control group of osteochondral lesions without any filling, analyzing the behavior of these groups in terms of time. Twelve adult albino male New Zealand rabbits were used being submitted to an osteochondral lesion of 4 mm in diameter and 3 mm deep in both knees, at the femoral trochlea area. On the right knees, which comprised the Study Group, the osteochondral defect was filled by a clot of mesenchymal cells, obtained by centrifugation of an aspirate from bone marrow and sealed with fibrin glue. On the left knees, which comprised the Control Group, the osteochondral defect did not get any filling. The animals were divided into 3 groups of 4 rabbits, and studied after eight, 16 and 24 weeks. The results were described based on a histological grading scale which took into account the cell morphology, the subchondral bone reconstruction, the matrix staining, the filling of the defect, the surface regularity and the bonding of the edges. The statistical analysis was made by the t-student Test for paired data in the comparison between the Study Group and the Control Group. For the comparisons made by the time factor, it was used the ANOVA Test one way. With 5% level of confidence, the hypothesis of equality between the Study and Control Groups was rejected. It was observed a decreasing distance between scores of the Study and Control Groups as time increased, as well as an increasing tendency of the scale value for the Control Group. It was concluded that the application of autologous bone marrow centrifuged in osteochondral defects in the knees of rabbits showed better result in histological evaluation, in comparison to the Control Group. By analyzing the evolution of the groups through time, there was an approach of their histological scores, especially by the increase observed in the Control Group
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Socher, Jan Alessandro. „Impacto da mitomicina-C tópica na deposição de colágeno em torno de enxerto de gordura na prega vogal de coelhos: estudo histológico e morfométrico“. Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/5/5143/tde-01062009-113259/.
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Desde o início de 1990, a enxertia de gordura na prega vocal é descrita como um método para reparar a insuficiência glótica. O objetivo deste estudo é avaliar os efeitos da aplicação tópica de mitomicina-C no processo cicatricial de enxertos autólogos de gorduras inseridos em pregas vocais de coelhos através da medida da deposição de colágeno. Vinte e oito coelhos foram submetidos a enxertia de gordura em ambas pregas vocais. As pregas vocais direitas recebeu previamente a aplicação tópica de mitomicina-C (0,4mg/ml) durante cinco minutos enquanto que as pregas vocais esquerdas formavam o grupo controle (sem mitomicina-C). Quatro grupos com 6 coelhos cada foram sacrificados com 7, 14, 30 e 90 dias após a cirurgia de enxertia. As pregas vocais foram removidas para estudo histológico com a intenção de quantificar a deposição de colágeno através da coloração por Picrossírius Red sob microscopia polarizada. A deposição de colágeno foi menor em todos os grupos de pregas vocais que receberam aplicação tópica de mitomicina-C quando comparada com as pregas vocais do grupo controle. No presente estudo, a aplicação tópica de mitomicina-C antes da enxertia de gordura reduziu significativamente a deposição de colágeno (p = 0,05).Since the early 1990s, fat implantation in the vocal fold is described as a method of repairing glottal insufficiency. The aim of this study was to evaluate the effect of topical application of mitomycin in the healing process with collagen deposition measurement around of autologous fat implants inserted in rabbits vocal folds. Twenty-eight rabbits were submitted to a fat implant in the both vocal folds. The right vocal folds received previously topical application of mitomycin (0,4mg/ml) for five minutes and the left vocal folds were the control group (without mitomycin). Four groups of 6 rabbits each were sacrificed 7, 14, 30 and 90 days after the implantation. The samples of the vocal folds were collected for histological analysis with the purpose of quantifying the collagen deposition by Picrosirius Red stain under polarization microscopy. The collagen deposition was lower in all groups of vocal folds with topical application of mitomycin than in control groups. In the present study, the topical application of mitomycin before the fat grafts reduced significantly the collagen deposition (p = 0,05).
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Lamb, Ian Charles. „Factors affecting fertility in the lactating domestic rabbit“. Thesis, University of Aberdeen, 1985. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU362774.
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Lactational anoestrus and anovulation place limitations on the economic and biological efficiency of the three main domestic farm species ie cow, pig and sheep by reducing reproductive efficiency. The factors of Remating Interval, Nutrition and Suckling have been shown to influence fertility during lactation in these species. The objective of the present study was to examine the effects of these factors on fertility and identify the mechanisms by which they act, using the lactating domestic rabbit as an experimental model and so provide information which may help overcome the obstacles preventing concurrent pregnancy and lactation in the domestic farm species. Experiment 1 provided data on the fertility of primiparous crossbred lactating does in the immediate postpartum period. This information was used to decide on which day postpartum does should be remated in subsequent experiments. Sixty-four does each suckling 6 pups were mated on day 1 (N = 17), 2 (N = 17), 3 (N = 15) or 4 (N = 15) postpartum (where day 0 = the day of parturition) and killed on day 10 postcoitum (where day 0 = the day of mating) to assess fertility. Overall fertility levels were high during this period. There were no significant differences between does remated on day 1- 4 postpartum in their mating response (percentage of those does tested for mating, which mated) and, overall this was 97%, ovulation response (percentage of those does mating, which ovulated), overall 77%, implantation response (proportion of those does ovulating, which implanted ova), overall 83%, implantation rate, overall 8.7 or pre-implantation mortality (%), overall 24%. Ovulation rate was significantly increased in does mated on day 3 (13.3) and 4 (13.1) compared with those on day 1 (10.2) (P 0.05) and 2 (9.6) (P 0.01) postpartum. From these results day 1 postpartum remating was found to result in the highest level of absolute fertility (ie by multiplication of the estimated pregnancy rates (the percentage of does implanting ova of those mated) of' 82%, 60%, 60% and 53% with the implantation rate 7.9, 8.1, 9.4 and 9.6 of does mated on day 1 (N = 17) , 2 (N = 15), 3 (N = 15) and 4 (N = 15) postpartum respectively, giving a total of 111, 73, 85 and 77 pups on day 1, 2, 3 and 4 respectively) during this period postpartum and was therefore used in future experiments concerning the remating interval. In Experiment 2, the effects of the remating interval and nutrition on the fertility of lactating crossbred does was examined. Eighty-six does each suckling six pups were remated on either day 1 or 14 postpartum and offered diets with digestible energy (D.E.) contents of 8.5 or 15.4 M.J./ kg D.M. and digestible crude protein contents (D.C.P.) of 129 or 227 g/kg D.M. and which were otherwise nutritionally adequate for lactating does. The experiment was carried out over three consecutive lactations and does were killed at selected times in each lactation to assess fertility and body composition. Diet had no effect on any aspect of fertility, while in contrast the remating interval was shown to have a significant effect. Does remated on day 1 had a significantly greater ovulation response in the first (82% vs 63%, P 0.10) and second (100% vs 77%, P 0.05) lactation compared with those mated on day 14 postpartum. Pregnancy rate was also significantly greater in does remated on day 1 in the first (76% vs 51%, P 0.05) and the second (100% vs 67%, P 0.01) lactation compared with those mated on day 14 postpartum. There were no differences in pre or post-implantation mortality between does remated on day 1 and 14 postpartum and therefore pregnancy rate was determined by the initial ovulation response. Litter size at term was found to be related to the initial ovulation rate and both were greater in does remated on day 14 compared to day 1 postpartum. This reached significance for litter size at term in the first lactation (7.8: day 1 vs 10.1: day 14, P 0.01) and ovulation rate in the second lactation, which was 12.4 for does remated on day 1 and 17.8 for those remated on day 14 postpartum (P 0.01). There was no significant difference in the body composition of pregnant does on the various treatment combinations over the course of the experiment or in lactation performance between does which were pregnant and those which were not. Experiment 3 was undertaken to confirm the effects of the remating interval on fertility observed in does on Experiment 2 and also to record measures of doe lactation performance to assess if they could be related with the effects of this factor.
8
Reece, C. „Aspects of reproduction in the European rabbit (O. cuniculus) L“. Thesis, University of East Anglia, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.355356.
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Howorth, A. J. „Control of the secretory processes in the rabbit mandibular gland“. Thesis, University of Manchester, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.376296.
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Santos, Fábio Alexandre Abade dos. „Quadro anatomo-histopatológico e diagnóstico molecular da doença hemorrágica viral em coelho-bravo“. Master's thesis, Universidade de Lisboa, Faculdade de Medicina Veterinária, 2018. http://hdl.handle.net/10400.5/15206.
Annotation:
Dissertação de Mestrado Integrado em Medicina VeterináriaO vírus da doença hemorrágica dos coelhos de tipo 2 (RHDV2) foi detetado em Portugal pela primeira vez, em 2012, e encontra-se atualmente disseminado em todo o território nacional incluindo Madeira, Açores e Berlengas. O papel ecológico e económico do coelho-bravo, aliado à sua importância para os níveis tróficos superiores, levou a que o Governo Português ativasse em 2017 um plano para controlo desta doença (Despacho 4757/2017 de 31 de Maio). Este trabalho teve como objetivo estabelecer padrões de lesão histopatológica nos principais órgãos afetados (fígado, pulmão, baço, duodeno, coração, entre outros) durante a infeção por RHDV2 e relacioná-los com os padrões de distribuição de cargas virais (medidos através dos valores de Cq obtidos por RT-qPCR) em sete matrizes (fígado, baço, duodeno, fezes, rim, pulmão e ventrículo esquerdo). Todos os coelhos-bravos investigados (n=49), foram obtidos no âmbito deste estudo, durante suspeitas de surtos de DHV, sendo oriundos de vários locais. No grupo dos animais não vacinados, o diagnóstico virológico e histopatológico raramente suscitou dúvidas e não foram encontradas lesões macro e microscópicas diferentes entre os coelhos jovens e os animais adultos. No entanto foi observada uma diminuição significativa das cargas virais nos órgãos dos animais vacinados para RHDV2 quando comparados com os animais não vacinados, tal como já descrito na literatura. Em alguns animais vacinados, foi difícil detetar o vírus por métodos moleculares apesar da presença de graves lesões histopatológicas compatíveis com DHV. No caso dos animais vacinados, a valores de Cq tendencialmente maiores, correspondeu uma menor prevalência do padrão lesional hepático mais grave. Contrariamente, nos animais não vacinados, foram encontrados valores de Cq tendencialmente mais baixos no fígado (maiores cargas virais), correspondendo a um padrão lesional mais grave. Os dados obtidos indicam também que o fígado não é o órgão de eleição para diagnóstico de RHDV2 em animais vacinados, já que o pulmão foi a matriz onde o vírus foi mais detetado. Curiosamente, o ventrículo esquerdo apresentou-se como a matriz com maior percentagem de positividade em todos os grupos pelo que a pertinência da sua utilização sistemática no diagnóstico molecular, deve ser investigada. Foi ainda realizada a pesquisa de RHDV2 em outras espécies simpátricas: lebre ibérica (n=2), toirão (n=1), texugo (n=1), sacarrabos (n=1), roedores (n=18), pardalcomum (n=1), insetos (n> 2568) e ixodídeos (n=28)). Foi detetado RNA viral no pulmão de um toirão, no fígado e ventrículo esquerdo de uma lebre, nas fezes do pardal comum, e em 3 famílias de insetos (Ceratopogonidae, Staphylinidae e Simuliidae). Este trabalho trouxe novos dados para a compreensão da interface patogenia-diagnóstico e para a compreensão da eco-epidemiologia da DHV
ABSTRACT - Anatomo-histopathological analysis and molecular diagnosis of Viral Haemorrhagic Disease in wild rabbit - Rabbit haemorrhagic disease virus 2 (RHDV2) was detected in Portugal for the first time in 2012. It is currently widespread in the continent and islands (Azores, Madeira and Berlengas). The ecological and economic role of the wild rabbit and its crucial importance for the higher trophic levels, led the Portuguese Government to activate, in 2017, an action plan to control this disease (Dispatch 4757/2017 of 31 May). This work aimed to establish patterns of histopathological lesions in the organs affected during infection (liver, lung, spleen, thymus, duodenum, heart among others) and to relate them to the viral load distribution patterns, measured by the Cq values obtained with a RHDV2-specific RT-qPCR, in seven biological matrices (liver, spleen, duodenum, faeces, kidney, lung and left ventricle). All the wild rabbits investigated (n = 49) were obtained within the scope of this study and originated from several locations (mainly two wild-rabbit farms with management conditions and different purposes) during suspected outbreaks of haemorrhagic viral disease. In the group of unvaccinated animals, the virological and histopathological diagnosis rarely raised doubts and no different macro and microscopic lesions were found between young rabbits and adult animals No differences in the macro and microscopic lesions were found between young and adult rabbits but a significant decrease in the viral loads of organs was observed in RHDV2 vaccinated rabbits, when compared to non-vaccinated rabbits, as described before in the literature. In some animals that had been vaccinated, it was difficult to detect the virus by molecular methods, although severe histopathological lesions were identified. For the vaccinated group, the increase in the Cq values tended to be accompanied by a more variable lesional pattern, with the more severe ones being less prevalent. In the liver of nonvaccinated rabbits, for example, as Cq values decreased (corresponding to higher viral charges), more severe lesional patterns were observed. Our data indicate that the liver is not the organ of choice for RHDV2 molecular diagnosis in vaccinated animals, since the virus was more often detected in the lungs. Interestingly, the left ventricle showed the highest percentage of positivity in all groups, so the relevance of its systematic use for diagnosis should be considered and investigated. RHDV2 was also investigated in other sympatric species, such as Iberian hare (n=2), toad (n=1), badger (n=1), rodents (n=18), common sparrow (n=1), insects (n>2568) and ixodids (n=38). Viral RNA was detected in the lung of a toad, in the liver and heart of a hare in the faeces of the common sparrow, and in 3 families of insects (Ceratopogonidae, Staphylinidae and Simuliidae). This work brought new insights to the pathogeny-diagnosis interface and to the comprehension of the disease eco-epidemiology.
Financiado por: Fundo Florestal Permanente
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Bücher zum Thema "Rabbits Anatomy":
1
McLaughlin, Charles Albert. Laboratory anatomy of the rabbit. 3. Aufl. Dubuque, Iowa: Wm. C. Brown, 1990.
2
McCracken, Thomas. Color atlas of small animal anatomy: The essentials. Ames, Iowa: Blackwell Pub., 2008.
3
Popesko, Peter. A colour atlas of the anatomy of small laboratory animals. London: Wolfe Pub., 1992.
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Popesko, Peter. A colour atlas of the anatomy of small laboratory animals. London: Saunders, 2002.
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Practical anatomy of the rabbit: An elementary laboratory textbook in mammalian anatomy. Toronto: University Press, 1995.
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Wingerd, Bruce D. Rabbit Dissection Manual. The Johns Hopkins University Press, 1985.
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Silverman, Sam, und Lisa Tell. Radiology of Rodents, Rabbits and Ferrets: An Atlas of Normal Anatomy and Positioning. Saunders, 2004.
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Carlson, David, Thomas O. McCracken und Robert A. Kainer. Color Atlas of Small Animal Anatomy: The Essentials. Wiley & Sons, Incorporated, John, 2013.
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Carlson, David, Thomas O. McCracken und Robert A. Kainer. Color Atlas of Small Animal Anatomy: The Essentials. Wiley & Sons, Incorporated, John, 2013.
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Color Atlas Of Small Animal Anatomy The Essentials. Wiley-Blackwell, 2009.
Buchteile zum Thema "Rabbits Anatomy":
1
Adams, Bradley J., und Pamela J. Crabtree. „Human vs Rabbit“. In Comparative Skeletal Anatomy, 235–49. Totowa, NJ: Humana Press, 2008. http://dx.doi.org/10.1007/978-1-59745-132-1_13.
2
Jena, Sarita, und Saurabh Chawla. „The Anatomy, Physiology, and Husbandry of Laboratory Rabbit“. In Essentials of Laboratory Animal Science: Principles and Practices, 211–37. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-0987-9_10.
3
Kardel, Troels, und Paul Maquet. „XI Vesicles in the Lung. Anatomy of a Pregnant Rabbit. Experiments in Lungs. The Milky Vessels of the Udders. Observations in a Swan, Etc.“ In Nicolaus Steno, 441–45. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-25079-8_23.
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Kardel, Troels, und Paul Maquet. „2.11 Vesicles in the Lung. Anatomy of a Pregnant Rabbit. Experiments in Lungs. The Milky Vessels of the Udders. Observations in a Swan, Etc.“ In Nicolaus Steno, 523–28. Berlin, Heidelberg: Springer Berlin Heidelberg, 2018. http://dx.doi.org/10.1007/978-3-662-55047-2_22.
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„Rabbits“. In Clinical Anatomy and Physiology of Exotic Species, 173–95. Elsevier, 2005. http://dx.doi.org/10.1016/b978-070202782-6.50011-9.
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Powers, Lauren V., und Susan A. Brown. „Basic Anatomy, Physiology, and Husbandry“. In Ferrets, Rabbits, and Rodents, 1–12. Elsevier, 2012. http://dx.doi.org/10.1016/b978-1-4160-6621-7.00001-4.
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Vella, David, und Thomas M. Donnelly. „Basic Anatomy, Physiology, and Husbandry“. In Ferrets, Rabbits, and Rodents, 157–73. Elsevier, 2012. http://dx.doi.org/10.1016/b978-1-4160-6621-7.00012-9.
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Brown, Susan A. „Basic Anatomy, Physiology, and Husbandry“. In Ferrets, Rabbits, and Rodents, 2–12. Elsevier, 2004. http://dx.doi.org/10.1016/b0-72-169377-6/50003-4.
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Donnelly, Thomas M. „Basic Anatomy, Physiology, and Husbandry“. In Ferrets, Rabbits, and Rodents, 136–46. Elsevier, 2004. http://dx.doi.org/10.1016/b0-72-169377-6/50015-0.
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Powers, Lauren V., und David Perpiñán. „Basic Anatomy, Physiology, and Husbandry of Ferrets“. In Ferrets, Rabbits, and Rodents, 1–12. Elsevier, 2020. http://dx.doi.org/10.1016/b978-0-323-48435-0.00001-0.