...Rafael Guerra Cintra; Rubens Wajnsztejn; Camila Martins Trevisan; Victor Zaia; Antonio Simone Laganà; Bianca Bianco; Erik Montagna Background/Aims: Kisspeptin (KP) is a key player in the regulation of the release of gonadotropin-releasing hormone (GnRH), which increases the secretion...

... disorder characterized by delayed or loss of puberty and infertility due to functional deficiency in the hypothalamic gonadotropin-releasing hormone (GnRH). CHH can be classified into 2 subtypes on the basis of olfaction: Kallmann syndrome and normosmic CHH (nCHH). The spectrum of genetic variants causing...

... system controls, but the restraint can be eliminated by injury or tumor growth resulting in premature puberty. The first endocrine event of puberty is an increase in the amplitude of gonadotropin pulses at night due to increased pulsatile release of hypothalamic gonadotropin-releasing hormone (GnRH...

...C. Kordon; S.V. Drouva Several transmitters and neuropeptides participate in the regulation of gonadotropins. At the hypothalamic level, control of gonadotropin releasing hormone (GnRH) involves noradrenaline, GABA, glutamate, angiotensin II, neuropeptide Y, neurotensin, and 5-hydroxytryptamine...

..., onset of puberty was preceded, between 15 and 25 days of age, by a transiently increased activation of N-methyl- D -paspartate receptors involved in a facilitatory control of pulsatile secretion of gonadotropin-releasing hormone. We also showed that the proportion of elongated spermatids in testicular...

..., instructions or products referred to in the content or advertisements. Sodium valproate Gamma-aminobutyric acid Menstrual disturbance Gonadotropin-releasing hormone Luteinising hormone Case Reports Horm Res 1991;35:82-85 © 1991 S. Karger AG, Basel 0301 - 0 163/91 /0352-0082S2.75/0 Sodium Valproate...

...Alessandro Caruso; Antonio Lanzone; Anna Maria Fulghesu; Rosanna Apa; Costabile Guida; Salvatore Mancuso The pituitary and corpus luteum responses to acute gonadotropin-releasing hormone (GnRH) administration at the mid-luteal phase (LP) were studied in 24 infertile women. Patients were randomly...

...A. Lanzone; A.M. Fulghesu; N. Di Simone; R. Apa; C. Guida; A. Caruso; S. Mancuso The effect of human chorionic gonadotropin (hCG) administration on the pituitary and luteal responses to acute gonadotropin-releasing hormone (GnRH) administration at the mid luteal phase (LP) were studied in 20...

..., instructions or products referred to in the content or advertisements. Hyperprolactinemia Hypothalamus dopamine Gonadotropin-releasing hormone llorm Res 1991 ;35(suppl 1):5 12 © 1991 Karger AG. Basel 0301-0163/91/1)357-0(105 $ 2.75/0 Effect of Prolactin on the Secretion of Hypothalamic GnRH...

... Gonadotropin-releasing hormone Hormone Res. 25: 140-146 (1987) ©1987 S. Karger AG. Basel 0 3 0 1 -0 163/87/0253-014052.75/0 Influence of Short-Term Fasting on the Pituitary-Testicular Axis in Normal Men Sven Rdjdmark Department of Internal Medicine II, Section of Endocrinology, Sddersjukhusct, Stockholm...

...Shyi-Wu Wang; Hsiao-Fung Pu; Shou-Teh Chiang; Low-Tone Ho; Paulus S. Wang The effects of thyroidectomy and thyroxine (T4) replacement on the release of luteinizing hormone (LH) and gonadotropin-releasing hormone (GnRH) in ovariectomized (Ovx) rats were studied. Immediately after ovariectomy, rats...

... or property resulting from any ideas, methods, instructions or products referred to in the content or advertisements. Inhibin Gonadotropins Gonadotropin-releasing hormone Inhibin-like proteins FSH-stimulating protein Activin Hormone Res. 28: 104-118 (1987) Studies of the Inhibin Family...

... Thyrotoxicosis Gonadotropin-releasing hormone Abstract. To test whether chronic thyroid hormone excess influences the hypothalamic-pituitary-testicular axis, 8 hyperthyroid men were given two identical intravenous GnRH tests. The first test was performed before any treat­ ment had been instituted, the second 6...

... for the association between smell and fertility is strong as development of the gonadotropin-releasing hormone (GnRH) neurons, responsible for regulating fertility, is intricately associated with development of the olfactory system. Other gene mutations, including the recently discovered kisspeptin- GPR54 signalling...

... within one week. Therefore, hyperprolactinemia was induced for 7 days in the subsequent studies, to ensure a sufficient time course for GnRH suppression. Menstrual cycle Hyperprolactinemia Amenorrhea Hypothalamus Gonadotropin-releasing hormone Prolactin is thought to regulate its own...

...C.L. Roth; L. Brendel; C. Rückert; K. Hartmann Background: The pharmacodynamics of gonadotropin-releasing hormone (GnRH) agonists includes an initial ‘flare-up’ of the pituitary-gonadal axis, followed by reduced luteinizing hormone (LH) secretion. The question is if combining a short-acting...

... neurotransmitters stimulate the release of gonadotropin-releasing hormone (GnRH) from the hypothalamus, which subsequently causes the appropriate endocrine changes during puberty. One of these neurotransmitters, paradoxically, appears to be NPY, which has inhibitory effects early in life and stimulatory effects...

...Peter Christiansen; Niels E. Skakkebæk Objectives/Methods: To induce testicular growth and spermatogenesis, 11 patients with idiopathic hypogonadotropic hypogonadism were treated with long-term subcutaneous pulsatile gonadotropin-releasing hormone (GnRH) administration. Three patients had a history...

... chorionic gonadotropin Human menopausal gonadotropin Gonadotropin-releasing hormone Cryptorchidism, or hidden testis, will be caused by any anomaly that disrupts normal testicular descent [ 1 ]. It represents the most common congenital abnormality of genitalia in males [ 1, 2 ]. Cryptorchidism can...

... responsibility for any injury to persons or property resulting from any ideas, methods, instructions or products referred to in the content or advertisements. Gonadotropin-releasing hormone Thyrotropin-releasing hormone Luteinizing hormone Prolactin Dexamethasone Naltrexone It has been known...