Dissertações em Biologia Celular e Estrutural (Mestrado) - PPGBCE/UNICAMP
URI Permanente para esta coleçãohttps://repositorio.ufpa.br/handle/2011/9690
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Item Acesso aberto (Open Access) Estrutura e ultraestrutura do epitélio epididimário de búfalos (Bubalus bubalis) em diferentes idades(Universidade Estadual de Campinas, 1995-02-17) SANTOS, Jeannie Nascimento dos; DOLDER, Mary Anne Heidi; http://lattes.cnpq.br/7046643907575335The zonation of the buffalo epididymis of Mediterranea (Me), Murrah (mu) breeds and croosbreed Me x Mu was studied in 4 to 36 month old animals. These buffalos were c1assified in two groups, the animals which have not reached puberty (sexually immature) and animals (mature animals) and their epididymis was divided in 7 subregions called A to G. each subregion was analysed with and transmission electron microscopy. Light microscopy inc1uded routine staining with Hematoxilin & Eosin (HE), histochemistry with P AS and morphometric analysis for tubular and luminal diameters and height of epithelium and stereocilia. Throughout the epididymary tubule it was observed with light microscopy that tubules of alI ages have Principal cell (P), basal cell (B), Apical ceeII (A) and intraepithelialleukocytes (LI). Mitotic figures in the apical region of the epithelium are also found and are more numerous in the B and C subregions, specially in buffalos between 5 and 9 months of age. Histochemical analysis revealed the existence of secretory activity from the 5th month of age, principally in the A subregion, where the activity increases with sexual maturation. Morphometric analysis supports the idea that the buffalos which have not reached puberty already havee weell determined diameters and height variations of the tubule, lumen, epithelium and stereocilia. These variations were similar to that observed in buffalos after puberty. Tubular and luminal diameters increase from the A to G subregions while the height of epithelium and stereocilia diminish. However, in both morphometric features a significant difference (p