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dc.contributor.authorSantos, Clarice Machado dos
dc.date.accessioned2023-12-21T18:35:58Z-
dc.date.available2023-12-21T18:35:58Z-
dc.date.issued2011-05-04
dc.identifier.citationSANTOS, Clarice Machado dos. Estudo histológico, morfométrico e estereológico do pâncreas endócrino em morcegos com diferentes hábitos alimentares. 2011. 44 f. Tese (Doutorado em Biologia Animal) - Instituto de Ciências Biológicas e da Saúde, Universidade Federal Rural do Rio de Janeiro, Seropédica - RJ, 2011.por
dc.identifier.urihttps://rima.ufrrj.br/jspui/handle/20.500.14407/9180-
dc.description.abstractEste trabalho visou estudar o pâncreas endócrino de morcegos com diferentes hábitos alimentares (hematófago D. ecaudata, nectarívoro A. geoffroyi e insetívoro P. personatus), através de análise histológica, morfométrica e estereológica. Foram utilizados ao todo seis animais de cada grupo, coletados na caverna casa de Pedra (Sergipe). O pâncreas foi processado através das técnicas histológicas de rotina para inclusão em parafina. Histologicamente, foram identificado os componentes exócrinos (ácinos secretores e seus ductos associados) e endócrinos (ilhotas pancreáticas) do pâncreas. Foram observadas células imunoreativas (IR) à insulina, glucagon e somatostatina espalhadas isoladamente no pâncreas exócrino e, na região de tecido conjuntivo próximo aos ductos pancreáticos, foram identificadas células IR à insulina, glucagon e somatostatina. Células com a presença de processos citoplasmáticos foram visualizadas nas ilhotas. A massa de tecido pancreático total sobre a massa corporal não ultrapassa a relação de 0,6%, sendo esta relação maior nos morcegos insetívoros (0,6%) e menor nos morcegos nectarívoros (0,3%). O diâmetro das ilhotas variou entre as espécies sendo de 88,16 μm no morcego nectarívoro, de 56,94 μm no morcego hematófago e de 40,47 μm no morcego insetívoro. A análise estereológica mostrou uma densidade de volume (Vv) do pâncreas endócrino de 3,4% no morcego insetívoro, 6,1% no morcego nectarívoro e de 4,1% no morcego hematófago. A massa das ilhotas foi de 0,15 no morcego insetívoro, 0,24 no morcego nectarívoro e 0,48 no morcego hematófago. A densidade de volume das células α foi de (25,8%, 14,7, 16,2%), células β (35,5%, 8,7%, 54,8%) e células δ (3,9%, 6,2%, 14,3%) nos morcegos P. personatus, A. geoffroyi e D. ecaudata, respectivamente. As diferenças observadas entre espécies nos diversos parâmetros analisados podem refletir diferenças inter-específicas, assim como adaptações morfológicas das espécies ao seus hábitos alimentarespor
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior, CAPES, Brasil.por
dc.formatapplication/pdf*
dc.languageporpor
dc.publisherUniversidade Federal Rural do Rio de Janeiropor
dc.rightsAcesso Abertopor
dc.subjectMorcegospor
dc.subjectilhotas pancreáticaspor
dc.subjectestereologiapor
dc.subjectBatseng
dc.subjectpancreatic isletseng
dc.subjectstereologyeng
dc.titleEstudo histológico, morfométrico e estereológico do pâncreas endócrino em morcegos com diferentes hábitos alimentarespor
dc.title.alternativeHistological, morphometric and stereologic study of the endocrine pancreas in bats with different feeding habitseng
dc.typeTesepor
dc.description.abstractOtherThe aim of this work was study endocrine pancreas of bats with different feeding habits (hemataphagous D. ecaudata, nectarivorous A. Geoffroyi and insetivorous P. personatus) by histological, morphometric and stereological methods. Six animals was used in each group and they were collected in the caverna casa de Pedra (Sergipe). The pancreas was processed through routine histological techniques for paraffin embedding. Histologically, components of the exocrine pancreas (acini and their secretory ducts associated) and endocrine pancreas (pancreatic islet) were identified. Immunoreactive cells (IR) to insulin, glucagon and somatostatin were found isolated scattered in the exocrine pancreas and, in the tissue near the pancreatic ducts. It was also identified IR cells to insulin, glucagon and somatostatin. In the pancreatic islets, it was to indentifided cells with cytoplasmic processes. The total mass of pancreatic tissue in body weight does not exceed 0.6% and this relationship was higher in the insectivorous bats (0.6%) and lowest in nectarivorous bats (0.3%). The pancreatic islets diameter varied between species, being 88.16 μm in the nectararivorous bat, in the vampire bat at 56.94 μm and 40.47 μm in the insectivorous bat. The stereological analysis showed a volume density (Vv) of the endocrine pancreas of 3.4% in the insectivorous bat, 6.1% in the nectarivorous bat and 4.1%. in the vampire bat. The islet mass was 0.15 in the insectivorous bat, 0.24 in the nectarivorous bat and 0.48 in the vampire bat. The volume density of α cells was (25.8%, 14.7, 16.2%), β cells (35.5%, 8.7%, 54.8%) and δ cells (3.9 %, 6.2%, 14.3%) in the P. personatus, A. geoffroyi and D. ecaudata bats, respectively. The differences observed between species in the various parameters analyzed may reflect inter-specific differences, as well as morphological adaptations of species to their eating habits.eng
dc.contributor.advisor1Sales, Armando
dc.contributor.advisor1ID164050567-91por
dc.contributor.advisor1Latteshttp://lattes.cnpq.br/7306314893432986por
dc.contributor.referee1Pinheiro, Nadja Lima
dc.contributor.referee2Silva, Simone Florim da
dc.contributor.referee3Gitirana, Lycia de Brito
dc.contributor.referee4Mendes, Rosa Maria Marcos
dc.creator.ID086140217-04por
dc.creator.Latteshttp://lattes.cnpq.br/6508425201201985por
dc.publisher.countryBrasilpor
dc.publisher.departmentInstituto de Ciências Biológicas e da Saúdepor
dc.publisher.initialsUFRRJpor
dc.publisher.programPrograma de Pós-Graduação em Biologia Animalpor
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dc.subject.cnpqMorfologiapor
dc.thumbnail.urlhttps://tede.ufrrj.br/retrieve/62622/2011%20-%20Clarice%20Machado%20dos%20Santos.pdf.jpg*
dc.originais.urihttps://tede.ufrrj.br/jspui/handle/jspui/4051
dc.originais.provenanceSubmitted by Sandra Pereira (srpereira@ufrrj.br) on 2020-10-21T13:21:01Z No. of bitstreams: 1 2011 - Clarice Machado dos Santos.pdf: 1877332 bytes, checksum: 3627f6c2c3ce8cc4818df6d550417232 (MD5)eng
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