搜索结果: 16-30 共查到“医学 Pituitary”相关记录50条 . 查询时间(0.188 秒)
The effect of exogenous follicle stimulating hormone treatment on anterior pituitary and testicular function in the prepubertal bull
follicle stimulating hormone luteinizing hormone testosterone prepubertal bull
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2009/2/20
The effect of exogenous follicle stimulating hormone (FSH) on testicular function was studied in twenty 4-month-old Holstein bulls during two seasons (ten in late winter and ten in summer). Five mg ...
Pituitary and testicular function in spontaneously hypertensive rats
Pituitary testicular function spontaneously hypertensive rats
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2009/2/19
Levels of plasma gonadotropins, prolactin (PRL), and testosterone, and the testicular concentration, total content, and affinity of hCG binding sites were measured in male spontaneously hypertensi...
Comparison of Prostatic Response to Pituitary Grafts in Castrate Rats Treated with Testosterone or Dihydrotestosterone
prostate prolactin testosterone dihydrotestosterone
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2009/2/19
To understand further the effect of prolactin (PRL) on prostatic growth, the present study was undertaken to determine if the augmentation of testosterone (T)-stimulated growth by PRL is mediated ...
Impact of Pulsatile Administration of Gonadotropin-Releasing Hormone on the Pituitary-Testicular Axis of the Immature Rat
pulsatile gonadotropin-releasing hormone administration luteinizing hormone androgens
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2009/2/19
Effects of administering low doses of GnRH (30 ng/100 g body weight) at various frequencies on the pituitary-testicular axis were investigated. During a 6-hour treatment period, GnRH was administe...
Testosterone Pretreatment and the Response of Pituitary LH to Gonadotropin-Releasing Hormone（GnRH）in the Male Dog
GnRH LH-response testosterone dog
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2009/2/19
To characterize the effects of testosterone (T) pretreatment on the response of pituitary LH secretion to exogenous gonadotropin-releasing hormone (GnRH), intact male dogs were injected subcutaneo...
Effects of Experimentally Induced Hyperprolactinemia on the Hypothalamus, Pituitary, and Testes in the Golden Hamster
hyperprolactinemia hypothalamus pituitary testis prolactin follicle-stimulating hormone norepinephrine testosterone dopamine luteinizing hormone releasing hormone
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2009/2/19
Hyperprolactinemia was induced in adult male golden hamsters by transplantation of four homologous pituitaries under the renal capsules. The resulting elevation of plasma prolactin (PRL) levels wa...
Abnormalities of the Hypothalamic—Pituitary—Leydig Cell Axis in Young Adult Rats with Vitamin A Deficiency
vitamin A deficiency (VAD) hypogonadism testosterone Leydig cell hypothalamus
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2009/2/19
The hypothalamic concentration of gonadotrophin releasing hormone (GnRH), the in vivo pituitary responses to GnRH, and the in vivo Leydig cell responses to bovine luteinizing hormone (LH) and to end...
Validation of a Direct Radioimmunoassay for Testosterone in Unextracted Serum from Five Species: Application to Study of the Hypothalamic-Pituitary-Gonadal Axis in Males
direct radioimmunoassay serum testosterone luteinizing hormone releasing hormone immunoneutralization
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2009/2/19
A method for the radioimmunoassay of serum testosterone that does not require extraction or chromatography is described. Utilization of a highly specific antiserum, tritiumlabeled ligand, and doub...
Pituitary-Testis Relationships in Paraplegic Men
paraplegia androgens gonadotropins prolactin
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2009/2/19
Ten men aged 12 to 48 years with a complete neurophysiologic transection of the spinal cord (seven paraplegic, two quadriplegic, and one hemiplegic) were endocrinologically investigated to determi...
Effect of Estradiol on the Rat Prostate in the Presence and Absence of Testosterone and Pituitary
prostate rat estradiol testosterone pituitary prolactin
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2009/2/19
In an attempt to elucidate the effect of estradiol on the rat prostate, four experiments were conducted. In experiment 1, rats were orchiectomized and were given subcutaneous implants of silastic ...
Some Aspects of Pituitary Function in the Male Diabetic
pituitary function diabetes gonadotropin releasing hormone (GnRH) thyrotropin releasing hormone (TRH) growth hormone
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2009/2/19
In order to elucidate the hypothalamic-pituitary function in diabetes, the pituitary responsiveness of LH, FSH, prolactin (PRL), and growth hormone (GH) to a thyrotropin releasing hormone (TRH, 200 ...
Effects of Chronic, High-dose LHRH-Agonist Treatment on Pituitary and Testicular Functions in Rhesus Monkeys
Chronic High-dose LHRH-Agonist Treatment Pituitary Testicular Functions Rhesus Monkeys
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2009/2/18
The effects of chronic, high-dose treatment with an LHRH-agonist (D-Ser-(TBu)6-LHRH-ethylamide) on pituitary and testicular functions were investigated in four adult rhesus monkeys in-season. Doses ...
Pituitary adenylate cyclase-activating polypeptide（PACAP）：effects on blood flow in the testis and caput epididymidis of the rat
blood flow testis caput epididymidis rat
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2009/2/18
Pituitary adenylate cyclase-activating polypeptide (PACAP) is synthesized in developing germ cells in the testis and may act as a paracrine modulator of spermatogenesis and/or participate in tubul...
Gonadal and pituitary responsiveness of stallions is not down-regulated by prolonged pulsatile administration of GnRH
Equine hypothalamic-pituitary-gonadal axis ref ractoriness
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2009/2/17
The objective of this study was to determine if prolonged pulsatile administration of homologous gonadotropin-releasing hormone (GnRH) at therapeutic or 5x therapeutic doses would cause down-regul...
Suppressive effects of chronic hyperprolactinemia on penile erection and yawning following administration of apomorphine to pituitary-transplanted rats
Prolactin testosterone pituitary transplantation castration
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2009/2/17
Recent studies showed in vivo and in vitro that acutely introduced prolactin (PRL) excess was capable of diminishing penile erectile function independently of the LH-testosterone (T) dynamics. In th...