Morphology of the male agouti accessory genital glands (Dasyprocta prymnolopha Wagler, 1831)

Menezes, Danilo José Ayres de; Neto, Antônio Chaves de Assis; Oliveira, Moacir Franco de; Miglino, María Angélica; Pereira, Gabriel Ribas; Ambrósio, Carlos Eduardo; Ferraz, Maíra Soares; Carvalho, Maria Acelina Martins de

doi:10.1590/s0100-736x2010000900014

Cited by 13 publications

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“…The accessory sex gland complex comprises the vesicular gland, ampullary gland, prostate gland, bulbourethral glands, and coagulating glands. Nonetheless, not every mammalian order has all of the glands [17]. Scrupulous attention has always been given to the study of reproductive organs because, it is important to produce basic information on anatomy and histology of male reproductive system since it has considerable significance in breeding, in order to make a pathological diagnosis and provide clinical treatment of diseases [6,8,17,18,22].…”

Section: Introductionmentioning

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The gross anatomy of the male reproductive system of the European hedgehog (Erinaceus Europaeus)

et al. 2018

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The gross anatomy of the male reproductive system of the European hedgehog (Erinaceus Europaeus)

et al. 2018

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“…As dobras davam um aspecto de vilosidades, mesmo modo visto no rato gigante da Índia por Amiya & Maiti (1982), sendo que esses vilos estavam voltados para o interior da luz do órgão. O epitélio em preás apresentou ser pseudo-estratificado colunar, assemelhando-se a outras espécies como a viscacha (Chaves et al 2011); cutia (Menezes et al 2010, Mollineau et al 2009), rato gigante da Índia (Amiya & Maiti 1982), o rato (Gude et al 1982), o rato de laboratório (Hebel & Stromberg 1986) o rato de areia (Sprando et al 1999), e paca (Matamoros 1981).…”

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“…O músculo mostrou-se associado ao tecido conjuntivo denso, o qual emitia septos ao parênquima glandular dividindo-o em lóbulos que eram constituídos por tecido glandular do tipo túbulo-alveolar, esta disposição foi observada aos 45 dias de idade, quando o animal entrou na puberdade. O mesmo tecido do tipo túbulo-alveolar e epitélio simples colunar também foi observado no rato por Gude et al (1982), por Amiya & Maiti (1982) no rato gigante da Índia, na viscacha (Chaves et al 2011), e em cutias (Mollineau et al 2009, Menezes et al 2010. Próstata.…”

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“…Ao atingir a puberdade, aos 45 dias, a próstata do preá mostrou-se com um lúmen desenvolvido e com um pregueamento do epitélio variável. A mucosa dos ductos prostá-ticos era do tipo pseudo-estratificado, assemelhando com o rato de laboratório (Hebel & Stromberg 1986), viscacha (Chaves et al 2011), e a cutia (Mollineau et al 2009, Menezes et al 2010.…”

Section: Discussionunclassified

“…Durante o processo ejaculativo, os espermatozóides armazenados no epidídimo seguem para os ductos deferentes, onde as glândulas sexuais acessórias irão atuar na composição química e no volume do sêmen (Chaves et al 2011) percorrendo pela uretra e pênis. Estudos da via espermáti-ca e das glândulas acessórias foram vistos no rato gigante da Índia (Amiya & Maiti1982), na capivara (Paes de Barros et al 2000), viscacha (Chaves et al 2011), no hamster dourado (Nicander & Glover 1973), no coelho (Nicander 1956), na cobaia (Hoffer & Greenberg 1978), na paca (Borges 2004, Matamoros 1981) e na cutia (Mollineau et al 2009, Menezes et al 2010; entretanto, não há relatos descritivos dos órgãos genitais no preá. Considerando a carência de estudos sobre a biologia reprodutiva da espécie este trabalho objetivou descrever a cronologia do desenvolvimento dos órgãos genitais masculinos do preá sob o ponto e vista histológico.…”

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A microestrutura e o desenvolvimento dos órgãos genitais masculinos de preás (Galea spixii) criados em cativeiro

et al. 2012

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Pesq. Vet. Bras. 32(Supl.1):84-90, dezembro 2012 84 de 48 dias e uma ninhada de 2 a 4 crias. O objetivo deste estudo foi caracterizar histologicamente os componentes estruturais dos órgãos genitais de preás machos relacionando com a evolução cronológica destes órgãos na espé-cie. Foram utilizados para análise animais ao nascimento e aos 15, 30, 45, 60, 75, 90, 105, 120 e aos 150 dias de idade. Fragmentos do epidídimo, ducto deferente, pênis e glându-las sexuais acessórias foram coletados, fixados e processados para descrição em microscopia de luz. O epidídimo apresentou epitélio colunar simples e em cada fase sexual notou-se diferença quanto ao tamanho do lúmen tubular e à presença de espermatozóides no lúmen aos 45 dias de idade. O epitélio do ducto deferente no preá mostrou-se pseudo-estratificado colunar com crescente presença de estereocilios com o avanço da idade. A glândula vesicular no preá apresentou uma mucosa com pregueamento va-A microestrutura e o desenvolvimento dos órgãos genitais masculinos de preás (Galea spixii) criados em cativeiro¹ The Spix's yellow-toothed cavy (Galea spixii) from the Brazilian northeastern semi-arid is a rodent that does belong to the family Caviidae. They are found in regions of the Caatinga and Cerrado, and reproduces throughout the year, with a gestation period of 48 days and a litter of 2 to 4 pups. The aim of this study was to characterize histologically the structural components of the genital organs of male Spix's yellow-toothed cavies regarding their chronological development. For the analysis we used animals at birth and with 15, 30, 45, 60, 75, 90, 105, 120 and 150 days of age. Fragments of the epididymis, vas deferens, penis and accessory sex glands were collected, fixed and processed for light microscopic. The epididymis had a simple columnar epithelium and at each sexual stage the epididymis was noted different in size of the tubular lumen and regarding the presence of sperm in the lumen at 45 days of age. The epithelium of vas deferens was found to be pseudo-stratified columnar with increasing presence of stereocilia with advancing age. The vesicular gland showed a folded mucosa that varied according to stage of sexual development. The prostate was not very developed, with a small lumen in Spix's yellow-toothed cavy at birth and at 15 days of age; at 45 days showed variable wrinkling of the epithelium. The male genital organs underwent morphological transformations in line with age and sexual development, what helped to determine the onset of puberty, which in the species studied occurred at 45 days of age.INDEX TERMS: Spix's yellow-toothed cavy, Galea spixii, sexual development, rodents, epididymis, vas deferens, accessory sexual glands.

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Seasonal Morphological Variations and Age‐Related Changes of the Seminal Vesicle of Viscacha (Lagostomus maximus maximus): An Ultrastructural and Immunohistochemical Study

Chaves

Aguilera-Merlo

Cruceño

et al. 2012

The Anatomical Record

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The viscacha is a seasonal rodent that exhibit an annual reproductive cycle with periods of maximum reproductive activity and gonadal regression. We studied seasonal variations in the morphology and cellular population of the seminal vesicles (SVs) during both periods and in impuber animals. Seminal vesicles were studied by light and electronic microscopy. Measurements of epithelial height, nuclear diameter, luminal diameter, and muscular layer were performed. Also, we studied the distribution of androgen receptors (AR) in this gland during the reproductive cycle and in impuber animal. During gonadal regression, principal and clear cells showed signs of reduced functional activity. These were characterized by an epithelium of smaller height, irregular nuclei, and cytoplasm with few organelles, dilated cisterns, and glycogen granules. In impuber animals, the principal cells showed large nuclei with chromatin lax and cytoplasm with small mitochondria, poorly developed Golgi apparatus, and granules of glycogen. On the other hand, the cells exhibited seasonal variations in the distribution and percentage of immunolabeled cells to AR throughout the annual reproductive cycle. During the gonadal regression period, glandular mucosa exhibited numerous epithelial cells with intense nuclear staining. However, fibromuscular stromal cells were weakly positive for AR in contrast to what was observed during the activity period. Considering that testosterone values are lower in adult animals during the period of gonadal regression and in impuber animals, our immunohistochemical results show a significant correlation with the percentage of AR-immunopositive cells. In conclusion, these results demonstrate that the structure of the SVs changes in the activity period of viscacha, probably because of elevated levels of testosterone leading to an increase in the secretory activity of epithelial cells.

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Morphology of the male agouti accessory genital glands (Dasyprocta prymnolopha Wagler, 1831)

Cited by 13 publications

References 19 publications

The gross anatomy of the male reproductive system of the European hedgehog (Erinaceus Europaeus)

The gross anatomy of the male reproductive system of the European hedgehog (Erinaceus Europaeus)

A microestrutura e o desenvolvimento dos órgãos genitais masculinos de preás (Galea spixii) criados em cativeiro

Seasonal Morphological Variations and Age‐Related Changes of the Seminal Vesicle of Viscacha (Lagostomus maximus maximus): An Ultrastructural and Immunohistochemical Study

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