Results 1 to 10 of about 126,611 (274)

Endocrine management of male subfertility

Indian Journal of Endocrinology and Metabolism, 2013
Infertility in a couple is defined as failure to conceive after 12 months of regular unprotected intercourses. Male infertility due to impaired spermatogenesis may result from hypothalamic, pituitary or testicular disorders.
Belinda George, Ganapathi Bantwal
doaj   +1 more source

The role of nitric oxide in reproduction

Brazilian Journal of Medical and Biological Research, 1999
Nitric oxide (NO) plays a crucial role in reproduction at every level in the organism. In the brain, it activates the release of luteinizing hormone-releasing hormone (LHRH).
S.M. McCann, C. Mastronardi, A. Walczewska, S. Karanth, V. Rettori, W.H. Yu   +5 more
doaj   +1 more source

Critical appraisal of diagnostic laboratory tests in the evaluation of central precocious puberty

Frontiers in Pediatrics
Pubertal onset is characterized by reactivation of the hypothalamic-pituitary-gonadal axis resulting in pulsatile gonadotropin secretion and subsequent sex steroid production.
Kanthi Bangalore Krishna, Luigi Garibaldi   +1 more
doaj   +1 more source

Comparative effects of 17α-methyltestosterone and letrozole on sex change in female longtooth grouper, Epinephelus bruneus

Fisheries and Aquatic Sciences
This study aimed to evaluate the effect of 17α-methyltestosterone (MT) and letrozole (aromatase inhibitor, AI) on inducing sex change in female longtooth grouper (Epinephelus bruneus).
Ji-Hye Lee, Nalin Medagoda, Byeong-Hoon Kim, Sachithra Amarin Hettiarachchi, Kyo-Young Hwang, Jun-Hwan Kim, Sung-Pyo Hur   +6 more
doaj   +1 more source

New insights into spexin and pituitary adenylate cyclase-activating polypeptide (PACAP) in regulating fish reproduction

Aquaculture and Fisheries
Reproduction is one of the most crucial physiological processes for the continuation of the generation of any species. Teleost are one of the most divergent aquatic species.
Ashis Saha, Mrinal Samanta, Hirak kumar Barman, Shiba Shankar Giri   +3 more
doaj   +1 more source

TUMORAL AND NON TUMORAL PITUITARY LESIONS AND REPRODUCTIVE SYSTEM

Acta Biomedica Scientifica, 2012
Activity of reproductive system is under the hypothalamic and hypophysial control, defining role in development and normal functioning of gonads is played by impulsive secretion of GnRH and gonadotropins.
I. A. Ilovayskaya
doaj  

Hypopituitarism masquerading as Prasad's syndrome: a case report

The Turkish Journal of Pediatrics, 2011
Prasad's syndrome is characterized by geophagia, growth retardation, hypogonadism, and zinc deficiency. We report a 15-year-old boy whose medical history and clinical and laboratory findings were fully compatible with Prasad's syndrome.
Fatma Demirel, Tekin Aksu, Ihsan Esen, Neşe Yarali, Gülhan Karakaya, Bahattin Tunç   +5 more
doaj  

Chromatin accessibility and transcriptomic profiles of sheep pituitary function associated with fecundity

BMC Genomics
Background The pituitary gland, a central regulator of the hypothalamic-pituitary-gonadal (HPG) axis, plays a pivotal role in reproductive efficiency by precisely controlling the secretion of gonadotropins, including follicle-stimulating hormone (FSH ...
Shanglai Li, Bingru Zhao, Peiyong Chen, Yu Cai, Hui Xu, Chenbo Yan, Feng Wang, Yanli Zhang   +7 more
doaj   +1 more source

Rethinking gonadotropin releasing hormone agonist suppression test: why it should be a gonadotropin releasing hormone antagonist suppression test. [PDF]

J Endocr Soc
Munshi R, Coutu Nadeau LP, Dahan MH.
europepmc   +1 more source

GnRH Promotes Gonadotropin Synthesis and Secretion in the Bovine Anterior Pituitary by Inhibiting METTL1-Mediated m7G Modification of FOXO1 mRNA. [PDF]

FASEB J
Xiao Y, Wang BB, Guo HX, Zhang YX, Zhang H, Chen CZ, Jiang H, Zhang Z, Zheng Y, Yuan B.   +9 more
europepmc   +1 more source