ultrastructural changes in female hepatocytes during ovarian maturation of steindachnerina insculpta (pisces: curimatidae) mudanças ultra-estruturais nos hepatócitos de fêmeas de steindachnerina insculpta (pisces: curimatidae) durante a maturação ovariana

Clicks: 175
ID: 259205
2006
Free PDF
Article Quality & Performance Metrics
Overall Quality
Not rated
Combines reader engagement with the AI quality analysis. This article has not been analysed, so there is no overall score — reader engagement is measured and shown alongside.
AI Quality Assessment
Not analyzed
Readership in this journal
Emerging

Ranked #55 of 75 articles by views in international journal of economic and environment geology

Most read Least read

Bar heights use a square-root scale.

Mint this article as an NFT
Not yet minted

Create a permanent, verifiable on-chain record of this article on the Scimatic Network. The NFT is held in your Journament account, and you can withdraw it to your own wallet at any time.

5 SUSD one-off · no wallet required
Sign in to mint
Abstract
During gonadal maturation the females of Steindachnerina insculpta, a teleost of the Furnas reservoir, Minas Gerais, Brazil, show low hepatosomatic and high gonadossomatic indexes, suggesting possible transference of hepatic substances to the ovaries. In comparison to the resting phase, in the maturation/mature one the hepatocytes show greater development of both smooth and rough endoplasmic reticula, increased electron density in the mitochondria, and glycogen scattered throughout the cytoplasm. In both resting and maturation/mature phases, the hepatic parenchyma contains melanomacrophagic centers that consist of degenerating cellular debris and are surrounded by capsules formed by cells, resembling fibroblasts, joined by desmosomes. No physiological relation of these centers with ovarian maturation was found.
Fêmeas de Steindachnerina insculpta, um teleósteo do reservatório de Furnas, Minas Gerais, Brasil, apresentaram, durante a maturação gonadal, um baixo índice hepatossomático e um alto índice gonadossomático, sugerindo que substâncias hepáticas são provavelmente transferidas para os ovários. Comparando-se fêmeas no estádio de repouso com aquelas no estádio maturação/maduro, observaram-se nos hepatócitos de fêmeas no estádio maturação/maduro maior desenvolvimento do retículo endoplasmático rugoso e liso, mitocôndrias com densidade eletrônica aumentada e glicogênio espalhado por todo citoplasma. No estádio de repouso, assim como no estádio de maturação/maduro, observaram-se, no parênquima hepático, centros melanomacrofágicos constituídos de restos celulares em degeneração delimitados por cápsula contendo células semelhantes a fibroblastos unidas por desmosomas. Não foram observadas relações fisiológicas entre os centros melanomacrofágicos e a maturação dos ovários.
Reference Key
ribeiro2006brazilianultrastructural Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;V. M. A. Ribeiro;N. Bazzoli;T. A. Maria;G. B. Santos
Journal international journal of economic and environment geology
Year 2006
DOI
10.1590/S1519-69842006000600002
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842006000600002
Keywords Keywords not found

Citations

No citations found. To add a citation, contact the admin at info@scimatic.org

Comments

No comments yet. Be the first to comment on this article.