Results 41 to 50 of about 109,348 (344)

Use of endocrine and immune responses as predictors of bull sperm motility [PDF]

, 2015
Research has shown that peripheral blood cell populations change in response to an immune challenge, and hormone concentrations directly affect sperm characteristics.
Looper, Michael, Mitchener, Lydia, Rorie, Rick, Rosenkrans, Charles, Jr.   +3 more
core   +5 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, Sandro La Vignera, Rosita A Condorelli, Laura M Mongioì, Aldo E Calogero   +4 more
doaj   +1 more source

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

Sperm death and dumping in Drosophila [PDF]

, 2004
Mating with more than one male is the norm for females of many species. In addition to generating competition between the ejaculates of different males, multiple mating may allow females to bias sperm use.
A Civetta, A Civetta, A Cordoba-Aguilar, AG Clark, AS Gilchrist, AS Gilchrist, B Jenzer, BI Arthur, CSP Price, D Scott, FM Hunter, GA Parker, GJ Lefevre, GT Miller, H Alonzo-Pimentel, HDM Moore, JK DeVries, L Xue, LG Harshman, LW Simmons, LW Simmons, M Otronen, MH Gromko, MH Gromko, MR Wheeler, S Pitnick, T Pizzari, TR Birkhead, WB Heed, WG Eberhard   +29 more
core   +1 more source

Cell Calcification Models and Their Implications for Medicine and Biomaterial Research

Advanced Healthcare Materials, EarlyView.
Calcification, is the process by which the tissues containing minerals are formed, occurring during normal physiological processes, or in pathological conditions. Here, it is aimed to give a comprehensive overview of the range of cell models available, and the approaches taken by these models, highlighting when and how methodological divergences arise,
Luke Hunter, Caterina Vanelli Coralli, Robert Dzhanaev, Aaron Morgan, Willi Jahnen‐Dechent, Sergio Bertazzo   +5 more
wiley   +1 more source

Importance of Zinc Concentration in Seminal Fluid of Men Diagnosed with Infertility

Acta Clinica Croatica, 2020
The prevalence and importance of male infertility make it a serious worldwide medical and social problem. The aim of this study was to determine if there were any significant differences in zinc concentrations in seminal fluid in men diagnosed with ...
Andrea Milostić-Srb, Aleksandar Včev, Marijan Tandara, Svjetlana Marić, Vesna Kuić-Vadlja, Nika Srb, Dubravka Holik   +6 more
doaj   +1 more source

Methylation Status of Imprinted Genes and Repetitive Elements in Sperm DNA from Infertile Males [PDF]

, 2011
Stochastic, environmentally and/or genetically induced disturbances in the genome-wide epigenetic reprogramming processes during male germ-cell development may contribute to male infertility.
El Hajj, N., Gromoll, J., Haaf, T., Hahn, T., Schneider, E., Schorsch, M., Tresch, A., Zechner, Ulrich   +7 more
core   +1 more source

Rapid Fabrication of Self‐Propelled and Steerable Magnetic Microcatheters for Precision Medicine

Advanced Materials, EarlyView.
A rapid Joule heating fabrication method for the production of self‐propelling, adaptive microcatheters, with tunable stiffness and integrated microfluidic channels is presented. Demonstrated through three microrobotic designs, including a steerable guiding catheter, an untethered wave‐crawling TubeBot, and a distal‐end propelled microcatheter, it was ...
Zhi Chen, Boris Rivkin, David Castellanos‐Robles, Ivan Soldatov, Lukas Beyer, Mariana Medina‐Sánchez   +5 more
wiley   +1 more source

#223 : Changes in Sperm Parameters in Semen Samples Collected on Procedural Day in Comparison to Semen Samples Collected for Routine Semen Analysis

Fertility & Reproduction, 2023
Background and Aims: Semen Analysis is the initial step in Assisted Reproduction Technology (ART) to help clinician decide the type of procedure such as Intra-Uterine Insemination (IUI), Intra-Cytoplasmic Sperm Injection (ICSI) or In-Vitro Fertilisation (
Su Xizn Lee, Fam May Chee, Sze Tian Tee
doaj   +1 more source

HUMAN SPERM COUNT

The Professional Medical Journal, 2015
Objectives: Reports from many parts of the world suggest that chemical andphysical agents in the environment, introduced and spread by human activity may affect fertilityin men. The objective of this article is to highlight the environmental factors and their associationto male sperm quality and count as well. Materials and Methods: This study focusing
Jahangir Sultan, Kokab Kokab, Muneer Ahmed   +2 more
openaire   +2 more sources