the aim of this study was to evaluate the concentrations of reproductive hormones in blood plasma and in follicular fluids of different sized follicles during various stages of the estrous cycle in holstein cattle. jugular blood samples from 42 adult holstein cattle were collected immediately after the slaughter. antral fluids from small (4-5 mm), medium (6-9 mm) and large (10-20 mm) follicles ...

introduction: obstructive cholestasis is associated with overproduction of endogenous opioids (eop) ,nitric oxide (no) and cytokines in the blood stream. these consequences can affect sex hormones. sincefertility is a result of physiological balance of sex hormones, we investigated the relationship betweenobstructive cholestasis and sex hormones and apoptotic germ cells in adult male rats. mate...

An unusual rise in blood glucose linked with the use of glucocorticoids a patient or without prior history diabetes mellitus is referred to as steroid-induced mellitus. The term steroid refers group chemicals that have varied physiological effects. Hydrocortisone are class hormones comprises both lab-made and naturally occurring hormones. Steroids human body. Corticosteroids wide spectrum effec...

The red blood cell function of avian embryos is regulated by cAMP. Adenosine A(2A) and beta-adrenergic receptor activation during hypoxic conditions cause changes in the hemoglobin oxygen affinity and CO(2) transport. Furthermore, experimental evidence suggests a general involvement of cAMP in terminal differentiation of avian erythroblasts.

Adler (1) in 1934 demonstrated that a physiologically inactive extract of human male urine can be obtained with butyl alcohol and that, by subsequent heating with strong acid, the inactive extract can be converted into a potent material which promotes the growth of the combs of capons. Peterson, Gallagher, and Koch (2) in 1937 confirmed the acid hydrolysis of the inactive form and have determin...