Effect of HCG on the enzymic activity of toad testes

HCG affected several enzymatic activities in the toad testis. It produced a depression of the Na +, K +-dependent ATPase and Mg 2+-dependent ATPase as well as lower oxygen consumption. Acid phosphatase activity is also depressed by HCG treatment. The depression of the Na +, K + ATPase is correlated...

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Veröffentlicht in:	General and comparative endocrinology 1969-10, Vol.13 (2), p.185-188
Hauptverfasser:	Russo, J., Burgos, M.H.
Format:	Artikel
Sprache:	eng
Schlagworte:	Acid Phosphatase - metabolism Adenosine Triphosphatases - metabolism Animals Anura Biological Transport, Active - drug effects Chorionic Gonadotropin - pharmacology Depression, Chemical Histocytochemistry Magnesium Male Organ Size Oxygen Consumption - drug effects Potassium - analysis Sodium - analysis Sodium - metabolism Testis - anatomy & histology Testis - drug effects Testis - enzymology Testis - metabolism Water - analysis
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Zusammenfassung:	HCG affected several enzymatic activities in the toad testis. It produced a depression of the Na +, K +-dependent ATPase and Mg 2+-dependent ATPase as well as lower oxygen consumption. Acid phosphatase activity is also depressed by HCG treatment. The depression of the Na +, K + ATPase is correlated with the increased water and sodium ion uptake by the testes after HCG. The effect of HCG on the Na +, K + ATPase can be considered as the trigger in the mechanism of spermiation, through inhibition of the sodium pump. The inhibition of the other enzymes studied is discussed.
ISSN:	0016-6480 1095-6840
DOI:	10.1016/0016-6480(69)90237-8