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Endothelin-1 downregulates sperm phagocytosis by neutrophils in vitro: a physiological implication in bovine oviduct immunity OAK
MAREY, Mohamed Ali; YOUSEF, Mohamed Samy; LIU, Jinghui; MORITA, Kazuhiro; SASAKI, Motoki; HAYAKAWA, Hiroyuki; SHIMIZU, Takashi; ELSHAHAWY, Ibrahim I.; MIYAMOTO, Akio; 佐々木, 基樹; 清水, 隆; 宮本, 明夫.
The oviduct is an active contractile tube that provides the proper environment for sperm transport, capacitation and survival. Oviductal contractions are regulated by autocrine/paracrine secretion of several factors, such as prostaglandins (PGs) and endothelin-1 (EDN-1). We have previously shown that during the preovulatory stage, sperm are exposed to polymorphonuclear neutrophils (PMNs) in the bovine oviduct, and the bovine oviduct epithelial cells (BOECs) secrete molecules including PGE2 that suppress sperm phagocytosis by PMNs in vitro. In this study, we investigated the possible effects of EDN-1 on the phagocytic activity of PMNs toward sperm. The local concentrations of EDN-1 in oviduct fluid and BOEC culture medium ranged from 10–10 to 10–11 M as...
Palavras-chave: Endothelin-1; Oviduct; Phagocytosis; Polymorphonuclear neutrophils (PMN); Sperm.
Ano: 2016 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/4310
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