Results 21 to 30 of about 126,611 (274)

Comparative effects of coconut water and N-Acetyl cysteine on the hypothalamo-pituitary-gonadal axis of male rats [PDF]

Songklanakarin Journal of Science and Technology (SJST), 2017
Coconut water (CW) contains cysteine, an amino acid which influences glutathione metabolism and promotes reproductive functions. The effects of CW and N-acetyl cysteine (NAC) were compared on the hypothalamo-pituitary-gonadal-axis of danazol-(a GnRH ...
Olufadekemi Tolulope Kunle-Alabi, Opeyemi Oreofe Akindele, Maximillian I. Odoh, Bright Onome Oghenetega, Yinusa Raji   +4 more
doaj   +1 more source

Is the infertility in hypothyroidism mainly due to ovarian or pituitary functional changes?

Brazilian Journal of Medical and Biological Research, 2001
The objective of the present study was to examine whether hypothyroidism affects the reproductive system of adult female rats by evaluating ovarian morphology, uterus weight and the changes in serum and pituitary concentrations of prolactin and ...
L. Armada-Dias, J.J. Carvalho, M.M.D. Breitenbach, C.R. Franci, E.G. Moura   +4 more
doaj   +3 more sources

Intratesticular signals regulate germ cell progression and production of qualitatively mature spermatozoa in vertebrates

Frontiers in Endocrinology, 2014
Spermatogenesis, a highly conserved process in vertebrates, is mainly under the hypothalamic-pituitary control, being regulated by the secretion of pituitary gonadotropins, FSH and LH, in response to stimulation exerted by Gonadotropin Releasing Hormone (
Rosaria eMeccariello, Rosanna eChianese, Teresa eChioccarelli, Vincenza eCiaramella, Silvia eFasano, Riccardo ePierantoni, Gilda eCobellis   +6 more
doaj   +1 more source

Plasticity of the Reproductive Axis Caused by Social Status Change in an African Cichlid Fish: I. Pituitary Gonadotropins [PDF]

, 2011
Social position in a dominance hierarchy is often tightly coupled with fertility. Consequently, an animal that can recognize and rapidly take advantage of an opportunity to rise in rank will have a reproductive advantage.
Maruska, Karen P., Biran, Jakob, Jakob Biran, Karen P. Maruska, Levavi-Sivan, Berta, Russell D. Fernald, Berta Levavi-Sivan, Fernald, Russell D.   +7 more
core   +1 more source

The Development of Gonadotropins for Clinical Use in the Treatment of Infertility

Frontiers in Endocrinology, 2019
The first commercially available gonadotropin product was a human chorionic gonadotropin (hCG) extract, followed by animal pituitary gonadotropin extracts.
Bruno Lunenfeld, Wilma Bilger, Salvatore Longobardi, Veronica Alam, Veronica Alam, Thomas D'Hooghe, Thomas D'Hooghe, Thomas D'Hooghe, Sesh K. Sunkara   +8 more
doaj   +1 more source

Evaluation of different hormone inducers on the reproduction of Prochilodus brevis males

Revista Ciência Agronômica, 2023
The use of carp pituitary extract (CPE) in fish reproduction may have drawbacks, whereas analogues of mammalian (aGnRHm) or salmon (aGnRHs) gonadotropins containing dopamine inhibitor (DI) may offer greater advantages.
Carla Tatiana Nascimento Sousa Vieira, Yara Silvino Sales, Jessica Sales Lobato, Marcos Luiz da Silva Apoliano, Yasmim Maia Ferreira, Silvio Alencar Cândido-Sobrinho, Vanessa Alves Pereira, Carminda Sandra Brito Salmito-Vanderley   +7 more
doaj   +1 more source

The role of pituitary gonadotropins and intraovarian regulators in follicle development: A mini‐review

, 2021
Background The process of follicle development is tightly regulated by pituitary gonadotropins (follicle-stimulating hormone [FSH] and luteinizing hormone [LH]) and intraovarian regulators (eg, steroids, growth factors, and cytokines).
Benjamin K. Tsang, Tamamura, Chiyo, Aya Shirafuji, Yoshio Yoshida, Orisaka, Makoto, Tsuyoshi, Hideaki, Hideaki Tsuyoshi, Tsang, Benjamin K, Yoshida, Yoshio, Makoto Orisaka, Shirafuji, Aya, Miyazaki, Yumiko, Chiyo Tamamura, Yumiko Miyazaki   +13 more
core   +1 more source

Role of estrogen receptors (ERs) and G protein-coupled estrogen receptor (GPER) in regulation of hypothalamic-pituitary-testis axis and spermatogenesis

Frontiers in Endocrinology, 2014
Male reproductive function is under the control of both gonadotropins and androgens through a negative feedback loop that involves the hypothalamus, pituitary and testis known as hypothalamus-pituitary-gonadal axis (HPG).
Adele eChimento, Rosa eSirianni, Ivan eCasaburi, Vincenzo ePezzi   +3 more
doaj   +1 more source

Seasonal Expression of Gonadotropin Genes in the Pituitary and Testes of Male Plateau Zokor (Eospalax baileyi)

Animals, 2022
The gonadotropins, luteinizing hormone (LH) and follicle stimulating hormone (FSH), are glycoprotein hormones in the hypothalamic-pituitary-gonadal (HPG) axis and regulate mammalian reproduction.
Kang An, Baohui Yao, Yukun Kang, Mingfang Bao, Yuchen Tan, Qiangsheng Pu, Junhu Su   +6 more
doaj   +1 more source

High Fat-High Fructose Diet Elicits Hypogonadotropism Culminating in Autophagy-Mediated Defective Differentiation of Ovarian Follicles

Cells, 2022
Pituitary gonadotropins directly govern ovarian functions, which are in turn regulated by the ovarian steroid hormones. The precise interplay of gonadotropins and steroid hormones is critical for follicle growth and differentiation.
Chalikkaran Thilakan Rejani, Ajit Kumar Navin, Thekkey Madathil Valappil Mumthaz, Venugopal Bhuvarahamurthy   +3 more
doaj   +1 more source