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Histomorphometrical and proliferative aspects of placenta and uterus of the collared peccary (Tayassu tajacu)

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dc.contributor.authorSantos, Tatiana C.
dc.contributor.authorTonarelli, Cristiane
dc.contributor.authorTeixeira, Fábio A.
dc.contributor.authorMoacir F. Oliveira, Moacir
dc.contributor.authorMaria, Durvanei
dc.contributor.authorReginato, Patrícia
dc.contributor.authorKfoury Jr., Jose R.
dc.contributor.authorOliveira, Carlos A.L.
dc.contributor.authorLourenço, Daniela A.L.
dc.contributor.authorMiglino, Maria A.
dc.date.accessioned2017-03-13T17:19:02Z
dc.date.available2017-03-13T17:19:02Z
dc.date.issued2012
dc.description.abstractThe histomorphometric and proliferative characteristics of the collared peccary (Tayassu tajacu) placenta and uterus were analyzed. The material was examined by standard histological techniques and histochemistry (PAS, Perls and Alcian Blue pH 0.5 and 2.5%) and the cellular proliferation by AgNORs and flow cytometry. All the analyzed morphometric variables differed between pregnant and non-pregnant uteri in the luteal phase using the Dunnet test. Height and gland diameter of uterine glands increased linearly during pregnancy, with an intense positive PAS and Perls reaction in all stages. The cells with more than seven AgNORs per nuclei and the cells in the G2M cell cycle phase in the maternal tissue also increased after 70 days of pregnancy. The uteroplacental ridges had a linear increase in size with two distinct areas, base and top, with uterine epithelium and trophoblastic cells changing their morphology following the placental ridge development. Flow cytometry analysis showed the percentage of cells in each cell cycle phase with a quadratic behavior for stages G2/M in the maternal tissue, suggesting an increase in proliferative capacity of maternal tissue after 65 days of pregnancy. The same quadratic effect was observed in the G0/G1 phase in both maternal and fetal tissues. Cells in apoptosis showed cubic behavior in both tissues. The morphometric and cellular dynamic aspects observed in this study have not been previously described and they extend our knowledge of functions relating to maternal-fetal dynamics in this species.es
dc.formatapplication/pdfes
dc.format.extent14es
dc.identifier.citationHistology and Histopatholy, Volume 27, number 6 (June), 2012
dc.identifier.issn1699-5848
dc.identifier.issn0213-3911
dc.identifier.urihttp://hdl.handle.net/10201/52462
dc.languageenges
dc.publisherF. Hernandez y JuanF. Madrid. Universidad de Murcia. Departamento de Biología Celular e Histología.es
dc.rightsinfo:eu-repo/semantics/openAccesses
dc.subjectTayassues
dc.subjectEpitheliochoriales
dc.subject.otherCDU::5 - Ciencias puras y naturales::57 - Biologíaes
dc.titleHistomorphometrical and proliferative aspects of placenta and uterus of the collared peccary (Tayassu tajacu)es
dc.typeinfo:eu-repo/semantics/articlees
dspace.entity.typePublicationes
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Histology and histopathology Vol.27, nº 6 (2012)