Characteristics of the Equine Placenta at First Trimester

Autor(es)

André Luis Rezende Franciolli ^[1] ; Rodrigo da-Silva-Nunes-Barreto ^[2] ; Rafael Cardoso Carvalho ^[3] ; Franceliusa Delys de-Oliveira ^[4] ; Ana Flávia de-Carvalho ^[5] ; Ana Claudia Ferraz ^[6] ; Priscila Leal do-Nascimento ^[7] ; Sandra Mara da Encarnação Fiala Rechsteiner ^[8] ; Maria Angelica Miglino ^[9]

Afiliação do(s) autor(es)

^[1] University of Sao Paulo. School of Veterinary Medicine and Animal Sciences. Department of Surgery - Brasil

^[2] University of Sao Paulo. School of Veterinary Medicine and Animal Sciences. Department of Surgery - Brasil

^[3] University of Sao Paulo. School of Veterinary Medicine and Animal Sciences. Department of Surgery - Brasil

^[4] University of Sao Paulo. School of Veterinary Medicine and Animal Sciences. Department of Surgery - Brasil

^[5] UNIfeob. Department of Morphology - Brasil

^[6] UNIfeob. Department of Morphology - Brasil

^[7] UNIfeob. Department of Morphology - Brasil

^[8] Federal University of Pelotas. Department of Morphology - Brasil

^[9] University of Sao Paulo. School of Veterinary Medicine and Animal Sciences. Department of Surgery - Brasil

• Tipo de documento: Artigo Científico
• Fonte: INTERNATIONAL JOURNAL OF MORPHOLOGY; v. 38, n. 4, p. 1018-1025, 2020-08-00.

Resumo

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. (AU)

• Processo FAPESP: 08/54851-3 - Medicina veterinaria regenerativa: multipotencialidade das celulas da membrana amniotica e do saco vitelino no modelo equino (equus caballus, linneaus 1758)
• Beneficiário: André Luis Rezende Franciolli
• Modalidade de apoio: Bolsas no Brasil - Doutorado