Results 81 to 90 of about 712,118 (311)
The male to female ratio at birth [PDF]
, 2014 The factors that influence the male to female ratio at birth are legion. Males are usually born in excess and stress decreases the ratio while wellbeing and good health tends to increase it.
Grech, Victor E., Mamo, Julian
core +1 more source
Advanced Science, EarlyView.Glutamine deprivation triggers transient DNA damage yet activates adaptive repair in hepatocellular carcinoma cells. We identify TRIB3 as a stress‐induced nuclear scaffold that associates with DDX5 and G‐quadruplex DNA atBRCA1 andRAD51AP1 promoters. TRIB3 loss increases G4 accumulation, suppresses HR gene transcription, elevates γ‐H2A.X, and sensitizes
Qiang Ji +10 more
wiley +1 more source
Reproductive Biology and Endocrinology, 2020 Background Microdissection testicular sperm extraction (microTESE) in men with non-obstructive azoospermia (NOA) is the procedure that results in the highest number of sperm cells retrieved for in vitro fertilization (IVF).
Parviz K. Kavoussi +9 more
doaj +1 more source
Semi-automated curation of protein subcellular localization: a text mining-based approach to Gene Ontology (GO) Cellular Component curation [PDF]
, 2009 Background: Manual curation of experimental data from the biomedical literature is an expensive and time-consuming endeavor. Nevertheless, most biological knowledge bases still rely heavily on manual curation for data extraction and entry.
Chan, Juancarlos +4 more
core +4 more sources
Sperm retrieval techniques for assisted reproduction [PDF]
International braz j urol, 2011 Different surgical methods such as PESA, MESA, TESA, TESE and micro-TESE have been developed to retrieve spermatozoa from either the epididymis or the testis according to the type of azoospermia, i.e., obstructive or non-obstructive. Laboratory techniques are used to remove contaminants, cellular debris, and red blood cells following collection of the ...
Esteves, Sandro C. +2 more
openaire +5 more sources
Advanced Science, EarlyView.Environmental cadmium exposure disrupts testicular homeostasis through a novel intercellular communication axis. Stressed Sertoli cells release extracellular vesicles carrying damage‐associated molecular patterns and mitochondrial fragments, which activate macrophages via TLR4/NF‐κB signaling.
Jianfeng Ma +17 more
wiley +1 more source
Innovations in surgical management of nonobstructive azoospermia
Indian Journal of Urology, 2016 Testicular sperm extraction (TESE) technique and intra-cytoplasmic sperm injection are breakthrough fertility treatments for men with nonobstructive azoospermia (NOA).
Renzhong Ran +2 more
doaj +1 more source
Utility of micro-TESE in the most severe cases of non-obstructive azoospermia
Upsala Journal of Medical Sciences, 2020 The use of intracytoplasmic sperm injection (ICSI) has been a major breakthrough in the treatment of male infertility. Even patients with non-obstructive azoospermia (NOA) may benefit from the ICSI technique to father a child as long as spermatogenesis ...
Göran Westlander
doaj +1 more source
In vitro maturation of germinal vesicle oocytes in stimulated intracytoplasmic sperm injection cycles [PDF]
, 2011 Objective: This study evaluated in vitro maturation (IVM) of oocytes in the germinal vesicle (GV) stage in stimulated intracytoplasmic sperm injection (ICSI) cycles.
Esmaelzadeh, S. +3 more
core
Advanced Science, EarlyView.The study elucidates that paternal preconception stress can drive offspring hyperresponsivity of the stress system via hypomethylation of a specific DNA region in sperm. This key link is confirmed in a cohort of prospective fathers: the epigenetic alteration is associated with elevated stress hormone levels.
Mengxi Lu +10 more
wiley +1 more source