Results 71 to 80 of about 100,933 (268)
The Effect of Assisted Reproductive Technologies on Human Sex Ratios
Australian 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
Kisspeptin as a test of hypothalamic dysfunction in pubertal and reproductive disorders
Andrology, 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
Andrology, EarlyView.Abstract Background G protein‐coupled receptors are a large and functionally diverse family of membrane receptors involved in a number of biological processes. Like other proteins, G protein‐coupled receptors need to be properly folded in order to traffic to the plasma membrane and interact with agonist.
Alfredo Ulloa‐Aguirre +5 more
wiley +1 more source
Precocious puberty in children - diagnosis, causes and treatment
Journal of Education, Health and Sport, 2019 Physiological sexual maturation begins with pulsatile gonadoliberin (GnRH) secretion by neurons in the arcuate hypothalamic nuclei. GnRH affects the synthesis and pulsatile secretion of the anterior pituitary gonadotropic hormones - LH and FSH, which ...
Adrianna Krupa +4 more
doaj +1 more source
Andrology, EarlyView.Abstract Background WFS1 spectrum disorder, also known as Wolfram syndrome (WS) is an ultra‐rare (<1:500,000; ORPHA: 3463) monogenic (OMIM #222300) progressive neuroendocrine and neurodegenerative disorder, characterised by early‐onset insulin‐dependent diabetes, optic atrophy, central diabetes insipidus and sensi‐neuronal deafness.
Julia Rohayem +6 more
wiley +1 more source
Andrology, EarlyView.Abstract Background Myocyte enhancer factor 2 transcription factors regulate essential transcriptional programs in various cell types. The activity of myocyte enhancer factor 2 factors is modulated through interactions with cofactors, chromatin remodelers, and other regulatory proteins, which are dependent on cell context and physiological state.
Karine de Mattos +4 more
wiley +1 more source
GnRH agonist versus GnRH antagonist in in vitro fertilization and embryo transfer (IVF/ET)
Reproductive Biology and Endocrinology, 2012 Several protocols are actually available for in Vitro Fertilization and Embryo Transfer. The review summarizes the main differences and the clinic characteristics of the protocols in use with GnRH agonists and GnRH antagonists by emphasizing the major ...
R. Depalo +6 more
semanticscholar +1 more source
Season of birth and variations in male reproductive health: A population‐based cohort study
Andrology, EarlyView.Abstract Background Season of birth has been associated with various later reproductive health outcomes in women, but little is known on the potential associations in men. Objectives To investigate the association between season of birth and semen characteristics, testes volume and reproductive hormone levels in young men.
Anne Gaml‐Sørensen +8 more
wiley +1 more source
INTACT PROTEIN ABSORPTION BY THE FISH GUT. 2. APPLICATION POTENTIAL AND LIMITATIONS [PDF]
Croatian Journal of Fisheries, 1998 One of the major roles of the fish gut is to exclude antigenic materials. Nevertheless, considerable evidence has accumulated to suggest that the vertebrate gut, in general, is naturally permeable to ingested macromolecules.
Emin Teskeredžić +3 more
doaj