The presence of adenosine 3’,5’-monophosphate was demonstrated in bovine luteal tissue. The addition of luteinizing hormone to incubating slices of a bovine corpus luteum caused a rapid accumulation of this cyclic nucleotide which preceded the increase in progesterone synthesis. This effect appeared to be specific for luteinizing hormone. Puromycin did not inhibit this action of luteinizing hor...

Protein carboxymethylase, an enzyme capable of methylating proteins and polypeptides, was purified from bovine pituitary. The anterior pituitary hormones, luteinizing hormone, follicle-stimulating hormone, adrenocorticotropic hormone, growth hormone, thyroid-stimulating hormone, and prolactin, were found to be substrates for this enzyme. The posterior pituitary hormones, oxytocin and vasopressi...

The effect of graded exercise on the secretion of cortisol, testosterone, prolactin, growth hormone, thyroid stimulating hormone (TSH), luteinizing hormone and follicle stimulating hormone (FSH) is reported. While cortisol, prolactin, growth hormone and testosterone rise during the period of exercise, a rise in luteinizing hormone becomes evident only after rest. Levels of FSH and TSH remained ...

Multiple sodium/hydrogen exchanger (NHE) isoforms are expressed in the testes, and they play various roles in cell volume regulation, intracellular pH regulation, and fluid absorption. NHE8, the most recently characterized NHE family member, is detected in the Leydig cells in humans and mice in great abundance by immunohistochemistry in the current study. Male mice lacking NHE8 expression were ...

Background and Objective: As infertility is rapidly becoming a major medical problems among Sudanese females, that has an impact on ovulation and menstruation and other complications, the aim of our present study to investigate the concentration and evaluate potential role of luteinizing hormone, follicle stimulating hormone and esteradiol in Sudanese infertile females, that may help and facili...

Binding of human [(125)I]luteinizing hormone to homogenates of luteinized rat ovaries is dependent upon time, temperature, and pH and is saturable. Injection of human chorionic gonadotropin in vivo or addition of unlabeled human chorionic gonadotropin or human or ovine luteinizing hormone in vitro inhibits binding, whereas follicle stimulating hormone or prolactin is without effect. The dissoci...