Data/hora: 23/09/2024 12:20:39

Biblioteca(s): 	Embrapa Gado de Leite; Embrapa Recursos Genéticos e Biotecnologia.	
Data corrente: 	13/12/2016	
Data da última atualização: 	30/01/2023	
Autoria: 	CAMPOS-JUNIOR, P. H. A.; ALVES, T. J. M.; DIAS, M. T.; ASSUNÇAO, C. M.; MUNK, M.; MATTOS, M. S.; KRAEMER, L. R.; ALMEIDA, B. G.; RUSSO, R. C.; BARCELOS, L.; CAMARGO, L. S. de A.; VIANA, J. H. M.	
Afiliação: 	PAULO HENRIQUE ALMEIDA CAMPOS-JUNIOR, UFSJ; THALYS JAIR MELO ALVES, UFSJ; MARCO TULIO DIAS, UFSJ; CAROLINA MARINHO ASSUNÇAO, UFJF; MICHELE MUNK, UFJF; MATHEUS SILVÉRIO MATTOS, UFMG; LUCAS ROCHA KRAEMER, UFMG; BRÍGIDA GOMES ALMEIDA, UFMG; REMO CASTRO RUSSO, UFMG; LUCÍOLA BARCELOS, UFMG; LUIZ SERGIO DE ALMEIDA CAMARGO, CNPGL; JOAO HENRIQUE MOREIRA VIANA, Cenargen.	
Título: 	Ovarian Grafts 10 days after Xenotransplantation: folliculogenesis and recovery of viable oocytes.	
Ano de publicação: 	2016	
Fonte/Imprenta: 	Plos One, v. 11, n. 6, e0158109, 2016.	
DOI: 	10.1371/journal. pone.0158109	
Idioma: 	Inglês	
Conteúdo: 	Abstracts Ovarian xenotransplantation is a promising alternative to preserve fertility of oncologic patients. However, several functional aspects of this procedure remained to be addressed. The aim of this study was evaluate the feasibility of xenotransplantation as a strategy to maintain bovine ovarian grafts and produce oocytes. Adult ovarian cortical pieces were xenotransplanted to the dorsal subcutaneous of female NOD-SCID mice (n = 62). Grafts were recovered ten days after xenotransplantation. Host and graft weights; folliculogenesis progression; blood perfusion, relative gene expression and number of macrophage and neutrophil of xenografts; in vitro developmental competence of graft-derived oocytes were evaluated. Folliculogenesis was supported in the grafts, as indicated by the presence of primordial, primary, secondary, antral, and atretic follicles. The xenografts showed a greater volumetric density of atretic follicles and higher hyperemia and number of host-derived macrophage and neutrophil (P<0.05), when compared to non-grafted fragments. There was a higher blood perfusion under the back skin in the transplantation sites of host animals than in control and non-grafted (P<0.01). BAX and PRDX1 genes were up-regulated, while BCL2, FSHR, IGF1R and IGF2R were down-regulated, when compared to the control (P<0.01). Twenty seven oocytes were successfully harvested from grafts, and some of these oocytes were able to give rise to blastocysts after in vitro fertilization. However, cleavage and blastocyst rates of xenograft derived oocytes were lower than in control (P<0.01). Despite showing some functional modifications, the ovarian xenografts were able to support folliculogenesis and produce functional oocytes.	
Palavras-Chave: 	Bovine ovarian grafts; Ovarian xenografts.	
Thesaurus Nal: 	oocytes.	
Categoria do assunto: 	--
L Ciência Animal e Produtos de Origem Animal	
URL: 	http://ainfo.cnptia.embrapa.br/digital/bitstream/item/154925/1/Cnpgl-2016-PlosOne-Ovarian.PDF	
Registro original: 	Embrapa Gado de Leite (CNPGL)	
Exemplares: 	CENARGEN - (36558-1) - UPC - AP - DD -  -  -  - DIS
CNPGL - (23125-1) - UPC - AP - DD -  -  -  - DIS