Results 171 to 180 of about 214,536 (370)

The Effect of Assisted Reproductive Technologies on Human Sex Ratios

open access: yesAustralian and New Zealand Journal of Obstetrics and Gynaecology, EarlyView.
ABSTRACT Background Modern assisted reproductive technology (ART), including pre‐implantation genetic testing for aneuploidy (PGT‐A), has opened new avenues in understanding early embryonic events and has simultaneously raised questions about the impact of ART itself on sex ratios.
Ektoras X. Georgiou   +6 more
wiley   +1 more source

Testicular histopathology and its association with germ cell numbers, serum concentrations of reproductive hormones, and semen quality

open access: yesAndrology, EarlyView.
Abstract Background It is well‐established that spermatogenesis, semen quality, and reproductive hormones are interlinked. It is, however, less well‐described how various specific testicular histopathologies are linked to reproductive hormones and semen quality.
Gülizar Saritas   +6 more
wiley   +1 more source

A WHO 2021‐based comprehensive scheme outlining sperm parameters’ associations with IVF outcomes in PGT‐A cycles

open access: yesAndrology, EarlyView.
Abstract Objective To examine the association between semen parameters, assessed according to World Health Organization (WHO)‐2021 criteria, and paternal body mass index (BMI) and age, with embryological and clinical outcomes in ICSI cycles involving preimplantation genetic testing for aneuploidy (PGT‐A).
Rossella Mazzilli   +16 more
wiley   +1 more source

The satiety hormone cholecystokinin gates reproduction in fish by controlling gonadotropin secretion

open access: yeseLife
Life histories of oviparous species dictate high metabolic investment in the process of gonadal development leading to ovulation. In vertebrates, these two distinct processes are controlled by the gonadotropins follicle-stimulating hormone (FSH) and ...
Lian Hollander-Cohen   +8 more
doaj   +1 more source

Update on andrological effects of SARS‐CoV‐2 infection and COVID‐19: An overview review

open access: yesAndrology, EarlyView.
Abstract Background Evidence indicates a wide range of andrological alterations in patients with the Severe Acute Respiratory Syndrome CoronaVirus 2 (SARS‐CoV‐2) infection and Coronavirus Disease 2019 (COVID‐19). Aim To provide an update on the andrological effects of SARS‐CoV‐2 infection and COVID‐19.
Giuseppe Lisco   +7 more
wiley   +1 more source

Kisspeptin as a test of hypothalamic dysfunction in pubertal and reproductive disorders

open access: yesAndrology, EarlyView.
Abstract The hypothalamic–pituitary–gonadal axis is regulated by the gonadotropin‐releasing hormone pulse generator in the hypothalamus. This is comprised of neurons that secrete kisspeptin in a pulsatile manner to stimulate the release of GnRH, and, in turn, downstream gonadotropins from the pituitary gland, and subsequently sex steroids and ...
Aureliane C. S. Pierret   +5 more
wiley   +1 more source

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