Characteristics of the Equine Placenta at First Trimester

The equine placenta is a simple apposition of fetal and maternal tissues, becoming more complex with the formation of microcotyledons around days 75 and 100 of gestation. The present study aimed to describe the gross and microscopic morphology of early equine placenta. Embryonic/fetal membranes from...

Full description

Saved in:
Bibliographic Details
Published inInternational journal of morphology Vol. 38; no. 4; pp. 1018 - 1025
Main Authors Franciolli, André Luis Rezende, da-Silva-Nunes-Barreto, Rodrigo, Carvalho, Rafael Cardoso, de-Oliveira, Franceliusa Delys, de-Carvalho, Ana Flávia, Ferraz, Ana Claudia, do-Nascimento, Priscila Leal, Rechsteiner, Sandra Mara da Encarnação Fiala, Miglino, Maria Angelica
Format Journal Article
LanguageEnglish
Portuguese
Published Sociedad Chilena de Anatomía 01.08.2020
Subjects
ANATOMY & MORPHOLOGY
Pregnancy
Preñez
Placental development
Desarrollo placentario
Equino
Horse
Online AccessGet full text

Cover

More Information
Summary:The equine placenta is a simple apposition of fetal and maternal tissues, becoming more complex with the formation of microcotyledons around days 75 and 100 of gestation. The present study aimed to describe the gross and microscopic morphology of early equine placenta. Embryonic/fetal membranes from thirty-seven mares were submitted to macroscopic description, light, scanning and transmission microscopy. Overall the gross characteristics of membranes were similar with already described for older stages. However, transmission electron microscopy evidenced high metabolic rate in chorion and allantois, and high secretion profile in amnion and even higher in yolk sac. Gene ontologies enrichment, using published data, pointed several common ontologies in allantoic and amniotic fluids, related to oxygen and iron transport, extracellular space and high-density lipoprotein receptor binding. Overall, the morphological and ontology enrichment could indicate allantois and amnion crosstalk.
ISSN:0717-9502
0717-9502
DOI:10.4067/S0717-95022020000401018