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The differential effects of the indazole-carboxylic acid derivative, tolnidamine, on Sertoli cell protein secretion
Indazole-carboxylic acids tolnidamine antispermatogenic agents Sertoli cell
2009/2/23
The indazole-carboxylic acid derivative tolnidamine (TOL) has marked antispermatogenic activity in rats. Previous morphological and biochemical studies indicate that Sertoli cells are one of the tar...
Luteinizing hormone secretion by male rat pituitary cells perifused in vitro：effect of experimental left varicocele and orchiectomy
Luteinizing hormone secretion male rat pituitary cells
2009/2/23
It has been shown previously that experimental left varicocele in the rat, results in a bilateral decrease in intratesticular testosterone. In the present work, pituitary responsiveness to GnRH as a...
Secretion of plasminogen activator in response to follicle-stimulating hormone in culture medium of human testicular cells from biopsy specimens
plasminogen activator follicle-stimulating hormone culture medium human testicular cells
2009/2/23
Testicular cells from human biopsy specimens were cultured and plasminogen activator secreted into the medium was investigated. Follicle stimulating hormone stimulated plasminogen activator secret...
Nature of alpha subunit secretion in men：circadian rhythms, pulsatile release and secretory profiles
alpha subunit secretion men circadian rhythms pulsatile release secretory profiles
2009/2/23
Alpha subunit complements LH as a marker of the activity of the hypothalamic GnRH pulse generator. To characterize episodes of alpha subunit release and to determine if a circadian pattern of alpha ...
Estradiol and plasminogen activator secretion by cultured rat Sertoli cells in response to melanocyte-stimulating hormones
Estradiol and plasminogen activator secretion cultured rat Sertoli cells melanocyte-stimulating hormones
2009/2/23
Pro-opiomelanocortin-derived peptides, alpha-MSH and beta-endorphin, are synthesized and secreted by Leydig cells, and are believed to have paracrine effects on Sertoli cells in the testis. Peptid...
Kinetics of secretion of luteinizing hormone subunits and free alpha, and effects of gonadotropin releasing hormone
luteinizing hormone subunits gonadotropin releasing hormone
2009/2/23
While GnRH is known to stimulate release of pituitary gonadotropins, its acute effects on the kinetics of secretion of the various hormones and subunits are not well characterized. Pulse-chase exp...
24-hour pulsatile and circadian patterns of cortisol secretion in alcoholic men
24-hour pulsatile circadian patterns cortisol secretion alcoholic men
2009/2/23
Pulsatile and circadian patterns of cortisol secretion during acute (3 to 16 days) and chronic (29 to 39 days) abstinence were examined in alcoholic men with no clinical or laboratory evidence of he...
Effects of prolactin on luteinizing hormone-stimulated testosterone secretion in isolated perfused rat testis
prolactin testes luteinizing hormone testosterone secretion
2009/2/23
The direct peripheral effect of prolactin on LH-stimulated testosterone secretion was re-evaluated using the intact, isolated, perfused rat testis. In paired experiments, one testis was infused wi...
Transferrin secretion in response to different modes of FSH stimulation and cycloheximide in superfused Sertoli cell cultures
Transferrin secretion FSH stimulation cycloheximide superfused Sertoli cell cultures
2009/2/23
The influence of different modes of FSH stimulation and cycloheximide on transferrin secretion by rat Sertoli cells was investigated using a superfusion culture system. Sertoli cells from 18-day-old...
Electron microscopic study of the secretion process in bovine reproductive organs
Electron microscopic study secretion process bovine reproductive organs
2009/2/23
The origin and mechanism of the secretion of membrane-bound particles in bovine seminal plasma were studied with transmission (TEM) and scanning (SEM) electron microscopy of the epididymis, vas defe...
Alterations in the pulsatile properties of gonadotropin secretion in alcoholic men
Alterations pulsatile properties gonadotropin secretion alcoholic men
2009/2/23
The functional characteristics of the hypothalamic-pituitary-testicular axis were examined quantitatively in 10 chronic alcoholic men without hepatic dysfunction or clinical nutritional deficiencies...
Effect of germ cells on vectorial secretion of androgen binding protein and transferrin by immature rat Sertoli cells in vitro
germ cells vectorial secretion androgen binding protein transferrin immature rat Sertoli cells
2009/2/23
The influence of germ cells (greater than 85% pachytene spermatocytes) on vectorial secretion of androgen binding protein (ABP) and transferrin by immature rat Sertoli cells was investigated using t...
Effect of adrenal steroids on testosterone and luteinizing hormone secretion in the ram
adrenal steroids testosterone luteinizing hormone secretion ram
2009/2/23
The effects of adrenal steroids on testosterone and LH secretion and changes in serum cortisol levels in response to treatments were studied in the ram. Acute administration of synthetic ACTH (10 mi...
Regulation of gonadotropin secretion in the male: effect of an aromatization inhibitor in estradiol-implanted, orchidectomized dogs
gonadotropins testosterone estradiol aromatase aminoglutethim
2009/2/23
Testosterone is aromatized to estradiol in both peripheral tissues and the central nervous system. Various authors have suggested that this conversion in the male may be prerequisite for the regulat...
Intratesticular factors and testosterone secretion. Effect of treatments that alter the level of testosterone within the testis
Intratesticular factors testosterone secretion testosterone testis
2009/2/23
The authors recently have reported the presence of a nongonadotropic polypeptide factor in rat testicular interstitial fluid that can exert marked stimulatory effects on Leydig cell testosterone pro...