Results 21 to 30 of about 51,797 (303)

Thyroid hormones in male reproduction and infertility

open access: yesAsian Pacific Journal of Reproduction, 2019
Thyroid hormones have been well studied for its relevance to male reproduction in the last few decades. They are considered as essential regulators of male reproductive functions and play vital roles in male gonadal developments.
Ahmed Alahmar   +2 more
doaj   +1 more source

The Daily Profiles of Circulating AMH and INSL3 in Men are Distinct from the Other Testicular Hormones, Inhibin B and Testosterone. [PDF]

open access: yesPLoS ONE, 2015
The testes secrete four hormones (anti-Müllerian hormone, insulin-like peptide 3, Inhibin B and testosterone) from two endocrine cell types. It is unknown whether anti-Müllerian hormone and insulin-like peptide 3 levels have a diurnal variation, and if ...
Yih Harng Chong   +2 more
doaj   +1 more source

Inhibitory effects of long-term repeated treatments of a sustainable GnRH antagonist, degarelix acetate, on caprine testicular functions

open access: yesThe Journal of Reproduction and Development, 2020
We investigated the effects of long-term repeated treatments with a sustainable gonadotropin-releasing hormone (GnRH) antagonist, degarelix acetate, on testicular hormonal secretion, size, ultrasound images, histology and spermatogenesis in goats to ...
Noritoshi KAWATE   +3 more
doaj   +1 more source

Role for growth regulation by estrogen in breast cancer 1 (GREB1) in hormone-dependent cancers [PDF]

open access: yes, 2018
Sex hormones play important roles in the onset and progression of several cancers, such as breast, ovarian, and prostate cancer. Although drugs targeting sex hormone function are useful in treating cancer, tumors often develop resistance.
Cheng, Meng   +2 more
core   +2 more sources

The direct response of the gonads to cues of stress in a temperate songbird species is season-dependent. [PDF]

open access: yes, 2013
The gonadotropin releasing hormone (GnRH) system in the hypothalamus is often considered the final point in integration of environmental cues as they pertain to the reproductive axis.
Bentley, George   +2 more
core   +2 more sources

Action of the Metalloproteinases in Gonadal Remodeling during Sex Reversal in the Sequential Hermaphroditism of the Teleostei Fish Synbranchus marmoratus (Synbranchiformes: Synbranchidae) [PDF]

open access: yes, 2018
Teleostei present great plasticity regarding sex change. During sex reversal, the whole gonadincluding the germinal epithelium undergoes significant changes, remodeling, and neoformation.However, there is no information on the changes that occur within ...
Antoneli, Fernanda   +3 more
core   +2 more sources

Thyroid Hormones Deficiency Impairs Male Germ Cell Development: A Cross Talk Between Hypothalamic-Pituitary-Thyroid, and—Gonadal Axes in Zebrafish

open access: yesFrontiers in Cell and Developmental Biology, 2022
In vertebrates, thyroid hormones are critical players in controlling different physiological processes such as development, growth, metabolism among others.
Maira S. Rodrigues   +8 more
doaj   +1 more source

Attenuation Effect of Recovery Sleep for Impaired Reproductive Function in Male Rats by Sleep Deprivation

open access: yesThe World Journal of Men's Health, 2023
Purpose: The aim of the present study was to test the hypothesis that recovery sleep could counteract the detrimental effects of sleep deprivation (SD) on male rats’ fertility.
Wei Zhang   +7 more
doaj   +1 more source

Impact of L-carnitine and selenium treatment on testicular apoptosis in rats exposed to 2.45 GHz microwave energy [PDF]

open access: yes, 2015
Objective: It has been suggested that electromagnetic radiation (EMR) by wireless devices (2.45 GHz) induces testicular apoptosis. We investigated if supplemental selenium (Se) and L-carnitine may reduce this adverse effect.
Comlekci, S.   +5 more
core   +1 more source

Seasonal changes in sperm parameters, testicular histology and circulating levels of reproductive hormones in the male African straw-colored fruit bat (Eidolon helvum)

open access: yesAsian Pacific Journal of Reproduction, 2020
Objective: To investigate seasonal changes in some reproductive characteristics of the male African straw-colored fruit bat [Eidolon (E.) helvum] in a tropical rain forest area of South-East Nigeria.
Clifford N Abiaezute   +4 more
doaj   +1 more source

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