Results 31 to 40 of about 108,786 (297)
A genetic basis for a postmeiotic X versus Y chromosome intragenomic conflict in the mouse. [PDF]
, 2012 Intragenomic conflicts arise when a genetic element favours its own transmission to the detriment of others. Conflicts over sex chromosome transmission are expected to have influenced genome structure, gene regulation, and speciation.
Affara, Nabeel A. +5 more
core +4 more sources
BMJ, 1996 The controversy over whether sperm counts have declined over the past 50 years is reopened by two papers in this issue of the BMJ. In a carefully analysed study of cohorts of unselected men in Britain born between 1951 and 1973, Irvine and colleagues demonstrate a progressive decline in sperm concentration and total sperm number per ejaculate of about ...
openaire +1 more source
Unusual combination of bilateral testicular microlithiasis and tubular ectasia of the rete testis with left intra‐ and extratesticular varicocele in a 17‐year‐old boy [PDF]
, 2012 We describe the rare combination of testicular microlithiasis, unilateral intra/extratesticular varicocele, and tubular ectasia of the rete testis in a 17‐year‐old boy who presented with testicular pain following a trauma.
Dogra +7 more
core +1 more source
Factors affecting sperm recovery rates and survival after centrifugation of equine semen [PDF]
, 2012 Conventional centrifugation protocols result in important sperm losses during removal of the supernatant. In this study, the effect of centrifugation force (400 or 900 × g), duration (5 or 10 min), and column height (20 or 40 mL; Experiment 1); sperm ...
Eilts, B. E. +4 more
core +2 more sources
Counting your sperm before they fertilize: are sperm counts really declining? [PDF]
Asian Journal of Andrology, 2013 A purported global decline in sperm counts has been a source of controversy since the early 1990s. Numerous studies performed since then, as well as re-analysis of the original data, show either no changes, or even increases, in sperm concentrations over time.
Alexander W, Pastuszak, Dolores J, Lamb
openaire +2 more sources
PLoS ONE, 2021 Poor sperm morphology and an elevated DNA fragmentation level are considered to be related to spermiogenesis malfunctions as a result of genetic mutations and effects of environmental factors, including industrial pollution.
Maxim Kleshchev +2 more
doaj +2 more sources
FSH dosage effect on conventional sperm parameters: a meta-analysis of randomized controlled studies
Asian Journal of Andrology, 2020 Follicle-stimulating hormone (FSH) represents a therapeutic option in normogonadotropic patients with idiopathic oligozoospermia. The aim of this review was to evaluate the possible dose- and drug-dependent efficacy of FSH treatment on conventional sperm
Rossella Cannarella +4 more
doaj +1 more source
FEBS Open Bio, EarlyView.The MRP4 transporter exports several drugs and signaling molecules. Here, we identified key promoter elements regulating basal MRP4 expression. Using reporter assays, we defined a conserved region with essential Sp1 and contributory Ets sites, which controlled basal MRP4 expression.
Debora Singer +7 more
wiley +1 more source
Mixture gaussian V2 based microscopic movement detection of human spermatozoa
IJAIN (International Journal of Advances in Intelligent Informatics), 2020 Healthy and superior sperm is the main requirement for a woman to get pregnant. To find out how the quality of sperm is needed several checks. One of them is a sperm analysis test to see the movement of sperm objects, the analysis is observed using a ...
Ariyono Setiawan +3 more
doaj +1 more source
Advanced Functional Materials, EarlyView.This study reports a microfluidic device with a functionalized surface utilizing a polyoxazoline coating and covalently immobilized gold nanoparticles and anti‐phosphatidylserine antibody. The device efficiently eliminates pre‐apoptotic and apoptotic spermatozoa and yields sperm with substantially improved quality and low DNA damage, offering a simple ...
Soraya Rasi Ghaemi +5 more
wiley +1 more source