Captive jaguar pair study links infertility to severe sperm defects
A single-pair study found severe sperm defects in a captive male jaguar, active ovulation in the female and normal 2n ...
Tag: sperm motility
COVID-19 Pandemic May Have Reversed Declining Sperm Counts in Shanghai Men
A retrospective analysis of 21,932 semen samples from a Shanghai reproductive center found that sperm count, concentration, and velocity parameters ...
Semen collection, short term storage, and cryopreservation in the Texas horned lizard (Phrynosoma cornutum)
As global reptile populations continue to decline, improving reproductive success in managed populations of listed species, such as Phrynosoma cornutum ...
Selenium Shows Partial Shield Against Fertility Damage From Common Psoriasis Drug
A small clinical trial in Egypt found that selenium supplementation partially protected semen quality in psoriasis patients taking methotrexate, improving ...
PFOA Replacements Found to Sabotage Human Sperm Through Calcium and Mitochondrial Damage
A new in vitro study shows that HFPO compounds marketed as safer PFOA replacements impair human sperm motility, acrosome reaction ...
Egg Yolk-Free Freezing Solution Preserves Rat Sperm for Successful IVF
Researchers at Kyoto University and RIKEN have developed a chemically defined cryopreservation solution that freezes rat sperm without egg yolk ...
Thyroxine and Nano-Melatonin Team Up to Boost Frozen Bull Sperm Quality and Fertility
Combining low-dose thyroxine with nanoscale melatonin significantly improved motility, antioxidant defences and pregnancy rates in cryopreserved Simmental bull semen.
A Missing Lipid Tag on PDZK1 Emerges as a Hidden Cause of Sluggish Sperm
Researchers found that defective palmitoylation of the protein PDZK1 at cysteine 10, mediated by ZDHHC5, disrupts epididymosome-mediated cholesterol transport and ...
Liver Drug Shows Promise for Restoring Sperm Quality in Metabolic Syndrome
A new mouse study shows that the FXR agonist obeticholic acid improves sperm progressive motility in high-fat diet-induced metabolic syndrome ...
Scientists Discover a Molecular Switch That Drains Sperm of Their Swimming Power at High Altitude
New research identifies the free fatty acid receptor FFAR4 as a key mediator of high-altitude hypoxia-induced sperm motility loss, showing ...
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Mothers who receive childcare support from maternal grandparents show more parental warmth, finds NTU Singapore study
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University of Seville Breaks 120-Year-Old Mystery, Revises a Key Einstein Concept
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Bee body mass, pathogens and local climate influence heat tolerance
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Researchers record first-ever images and data of a shark experiencing a boat strike
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Groundbreaking Clinical Trial Reveals Lubiprostone Enhances Kidney Function
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