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Previous issue date: 2017-08-29 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES / Cap. I
The aim of the current study is to investigate the histological and histochemical description, as well as the presence and immunohistochemical distribution of cytoskeleton proteins such as alpha smooth muscle actin, desmin and vimentin in the ovaries, testes and epididymis of Enyalius bilineatus, Enyalius perditus and Urostrophus vautieri. These species are representatives of family Leiosauridae, in order to help developing a database on the reproductive biology of these lizards, which could be compared to that of other reptile species and vertebrates. The herein studied specimens are deposited in the Herpetological Collection of Federal University of Juiz de Fora. The animals? ovaries, epididymis and testes were removed and sent to the Histology and Embryology Laboratory (UFRRJ), where they were fixed, processed and then subjected to histological, histochemical and immunohistochemical techniques. The ovaries of these leiosauridae are functionally-active paired organs filled with ovarian follicles at different follicular development stages. These organs are covered by a simple cubic epithelium, which presents an underlying connective tissue layer called tunica albuginea. The testes are covered by the tunica albuginea and hold septa forming lobes where the seminiferous tubules are located in. The epididymis of these lizards are convolute ducts internally coated by an epithelium, whose shape ranges from simple cylindrical to simple cubic with stereocilia. The immunohistochemical analysis applied to the ovaries of the herein studied lizards showed moderate to strong reaction to the alpha smooth muscle actin in the teak layer and in endothelial cells of blood vessels. With respect to the species? testes, this cytoskeleton protein showed strong reaction in the tunica albuginea, interstitial tissue, and in endothelial cells of blood vessels. As for the epididymis, the alpha-actin showed immunohistochemical reaction in the capsule and in the interstitial tissue of the lizards. The antibody ?desmin? showed strong immunostaining in the albuginea and ovarian stroma of E. perditus, only; however, the endothelial cells in the blood vessels of the three herein analyzed species showed positive reaction to this intermediate filament. Desmin showed immunoreactivity in the testicular albuginea and in the endothelial cells of the blood vessels in the herein analyzed leiosauridae testes; however, only E. bilineatus showed immunostaining in the interstitial region. Desmin showed positive immunoreaction in the epididymis of E. perditus and E. bilineatus, only. Vimentin did not show immunostaining in the ovaries, testes and epididymis of the three analyzed lizards. The consistent results found in the current study provide additional data on the reproductive biology of the investigated species. These data may be used for phylogenetic and behavioral comparisons between the herein studied species and other species belonging to family Leiosauridae or other reptiles
Cap. II
The aim of the current study is to investigate the histological description, as well as the presence and immunohistochemical distribution of alpha smooth muscle actin, desmin and vimentin in the testes and epididymis of Enyalius bilineatus, Enyalius perditus and Urostrophus vautieri, which are representatives of family Leiosauridae, in order to help developing a database on the reproductive biology of these lizards, which could be compared to that of other reptile species and vertebrates. The herein studied specimens are deposited in the Herpetological Collection of Federal University of Juiz de Fora. The animals? epididymis and testes were removed and sent to the Histology and Embryology Laboratory (UFRRJ), where they were fixed, processed and then subjected to histological and immunohistochemical techniques. The shape of the testes varies reasonably among the studied leiosauridae. These organs are covered by the tunica albuginea and hold septa forming lobes, where the seminiferous tubules are located in. The epididymis of these lizards are convolute ducts internally coated by an epithelium, whose shape ranges from simple cylindrical to simple cubic with stereocilia. The immunohistochemical analysis applied to the testes of the herein studied lizards showed strong positive reaction to the alpha smooth muscle actin in the tunica albuginea, interstitial tissue, and in endothelial cells of blood vessels. Desmin showed strong immunoreactivity in the testicular albuginea of E. bilineatus and moderate immunoreactivity in E. perditus and U. vautieri; however, only E. bilineatus showed immunostaining in the interstitial tissue region. The endothelial cells of blood vessels showed positive immunoreaction to desmin in the three herein analyzed species. The epididymis showed moderate immunohistochemical reaction to alpha smooth muscle actin in the capsule and in the interstitial tissue, whereas desmin showed positive immunoreaction in the epididymis of E. perditus and E. bilineatus, only. Vimentin did not show immunostaining in the testes and epididymis of the three analyzed lizards. The consistent results found in the current study provide additional data on the reproductive biology of the investigated species. These data may be used for phylogenetic and behavioral comparisons between the herein studied species and other species belonging to family Leiosauridae or other reptiles. / Cap. I
Este trabalho investiga, al?m da descri??o histol?gica e histoqu?mica, a presen?a e distribui??o imuno-histoqu?mica de alfa-actina de m?sculo liso, desmina e vimentina nos ov?rios, test?culos e epid?dimos de Enyalius bilineatus, Enyalius perditus e Urostrophus vautieri, representantes da fam?lia Leiosauridae, para ajudar a formar uma base de dados sobre a biologia reprodutiva destes lagartos que possam ser comparados com outras esp?cies de r?pteis, bem como com outros vertebrados. Os esp?cimes estudados encontram-se depositados na Cole??o Herpetol?gica da UFJF. Os ov?rios, epid?dimos e test?culos dos animais foram removidos e encaminhados ao Laborat?rio de Histologia e Embriologia (UFRRJ), onde foram fixados, processados e ent?o submetidos ?s t?cnicas histol?gicas, histoqu?micas e imuno-histoqu?micas. Os ov?rios destes leiosaur?deos s?o ?rg?os pareados, repletos de fol?culos ovarianos, em distintos est?gios de desenvolvimento folicular. Estes s?o revestidos por epit?lio c?bico simples, com uma camada de tecido conjuntivo subjacente, a t?nica albug?nea. Os test?culos encontram-se envolvidos pela t?nica albug?nea e em seu interior cont?m septos que formam l?bulos, nos quais se localizam os t?bulos semin?feros. Os epid?dimos destes lagartos s?o ductos convolutos, revestidos internamente por um epit?lio que varia de cil?ndrico simples a c?bico simples com estereoc?lios. A imuno-histoqu?mica, nos ov?rios dos lagartos estudados, mostra uma rea??o moderada a acentuada para alfa-actina de m?sculo liso na camada da teca e em c?lulas endoteliais dos vasos sangu?neos, enquanto nos test?culos destas esp?cies nota-se uma acentuada rea??o para esta prote?na do citoesqueleto, na t?nica albug?nea, no tecido intersticial e nas c?lulas endoteliais dos vasos sangu?neos. Nos epid?dimos observa-se imunomarca??o para alfa-actina na c?psula e no tecido intersticial destes lagartos. Quanto ao anticorpo desmina, apenas em E. perditus, foi poss?vel imunorrea??o na albug?nea e no estroma ovariano, no entanto, nas tr?s esp?cies analisadas, as c?lulas endoteliais dos vasos sangu?neos demonstraram rea??o positiva a este filamento intermedi?rio. Nos test?culos dos leiosaur?deos estudados, a desmina foi imunolocalizada na albug?nea testicular e nas c?lulas endoteliais dos vasos sangu?neos, entretanto, apenas em E. bilineatus ocorreu imunomarca??o, na regi?o do interst?cio. Nos epid?dimos, a desmina demonstrou imunorrea??o positiva apenas em E. perditus e E. bilineatus. N?o houve rea??o imuno-histoqu?mica para vimentina nos ov?rios, test?culos e epid?dimos dos tr?s lagartos analisados. Este estudo obteve resultados consistentes, fornecendo assim mais dados sobre a biologia reprodutiva das esp?cies aqui investigadas, que poder?o ser utilizados para compara??es filogen?ticas e comportamentais com outras esp?cies da fam?lia Leiosauridae e outros r?pteis.
Cap. II
Este trabalho investiga, al?m da descri??o histol?gica, a presen?a e distribui??o imuno-histoqu?mica de alfa-actina de m?sculo liso, desmina e vimentina nos test?culos e epid?dimos de Enyalius bilineatus, Enyalius perditus e Urostrophus vautieri, representantes da fam?lia Leiosauridae, para ajudar a formar uma base de dados sobre a biologia reprodutiva destes lagartos que possam ser comparados com outras esp?cies de r?pteis, bem como com outros vertebrados. Os esp?cimes estudados encontram-se depositados na Cole??o Herpetol?gica da Universidade Federal de Juiz de Fora. Os epid?dimos e test?culos dos animais foram removidos e encaminhados ao Laborat?rio de Histologia e Embriologia (UFRRJ), onde foram fixados, processados e ent?o submetidos ?s t?cnicas histol?gicas e imuno-histoqu?micas. O formato dos test?culos varia razoavelmente entre os leiosaur?deos estudados. Estes ?rg?os encontram-se envoltos pela t?nica albug?nea e no seu interior cont?m septos que formam l?bulos incompletos, nos quais se localizam os t?bulos semin?feros. Os epid?dimos destes lagartos s?o ductos convolutos. Estes ductos s?o revestidos internamente por um epit?lio que varia de cil?ndrico simples a c?bico simples com estereoc?lios. A imuno-histoqu?mica revela uma acentuada rea??o positiva para alfa-actina de m?sculo liso nos test?culos dos leiosaur?deos analisados, na t?nica albug?nea e no tecido intersticial, assim como, nas c?lulas endoteliais dos vasos sangu?neos. A desmina apresentou acentuada imunorreatividade na albug?nea testicular em E. bilineatus e moderada em E. perditus e U. vautieri, entretanto, na regi?o do tecido intersticial, apenas em E. bilineatus ocorreu imunomarca??o. Nas tr?s esp?cies analisadas, as c?lulas endoteliais dos vasos sangu?neos demostraram imunorrea??o positiva para desmina. Nos epid?dimos observou-se rea??o imuno-histoqu?mica moderada para alfa-actina de m?sculo liso na c?psula e no tecido intersticial, enquanto a desmina demonstrou imunorrea??o positiva apenas em E. perditus e E. bilineatus. N?o houve imunomarca??o para vimentina nos test?culos e epid?dimos dos tr?s lagartos analisados. Este estudo obteve resultados consistentes, fornecendo assim mais dados sobre a biologia reprodutiva das esp?cies aqui investigadas, que poder?o ser utilizados para compara??es filogen?ticas e comportamentais com outras esp?cies da fam?lia Leiosauridae e outros r?pteis.
| Identifer | oai:union.ndltd.org:IBICT/oai:localhost:jspui/2467 |
| Date | 29 August 2017 |
| Creators | Firmiano, Enely Maris da Silveira |
| Contributors | Pinheiro, Nadja Lima, Nascimento, Aparecida Alves do, Santos, Marco Ant?nio Jos? dos, Mendes, Rosa Maria Marcos, Santos, Clarice Machado dos, Paoli, Severo de |
| Publisher | Universidade Federal Rural do Rio de Janeiro, Programa de P?s-Gradua??o em Bilogia Animal, UFRRJ, Brasil, Instituto de Ci?ncias Biol?gicas |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Format | application/pdf |
| Source | reponame:Biblioteca Digital de Teses e Dissertações da UFRRJ, instname:Universidade Federal Rural do Rio de Janeiro, instacron:UFRRJ |
| Rights | info:eu-repo/semantics/openAccess |
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