Title : Oxygen-Sensitive K+ Channels Modulate Human Chorionic Gonadotropin Secretion from Human Placental Trophoblast.

Pub. Date : 2016

PMID : 26863525






6 Functional Relationships(s)
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Protein Name
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1 Syncytiotrophoblast hCG secretion is modulated by the partial pressure of oxygen (pO2), reactive oxygen species (ROS) and potassium (K+) channels. PO-2 chorionic gonadotropin subunit beta 5 Homo sapiens
2 Here we test the hypothesis that K+ channels mediate the effects of pO2 and ROS on hCG secretion. PO-2 chorionic gonadotropin subunit beta 5 Homo sapiens
3 hCG secretion and 86Rb efflux were significantly greater in explants maintained in 21% pO2 than normoxia. PO-2 chorionic gonadotropin subunit beta 5 Homo sapiens
4 4-AP/TEA inhibited hCG secretion to a greater extent at 21% than 6% and 1% pO2, and reduced 86Rb efflux at 21% but not 6% pO2. PO-2 chorionic gonadotropin subunit beta 5 Homo sapiens
5 LDH release and tissue LDH/hCG were similar in 6%, 21% and 1% pO2 and unaffected by 4-AP/TEA. PO-2 chorionic gonadotropin subunit beta 5 Homo sapiens
6 ROS effects on both hCG secretion and 86Rb efflux are pO2-dependent but causal links between the two remain to be established. PO-2 chorionic gonadotropin subunit beta 5 Homo sapiens