By Clare Wilson Less like an eel, more like an otterPolymaths-lab.com Sperm swim differently to how we thought. Rather than undulating their tails symmetrically, like an eel, they have a lopsided wiggle that combines with spinning about their long axis to give an overall forward motion. “The asymmetry cancels out because of the rotation,” says… Read More »
Infertility affects one in seven men of reproductive age worldwide. One idea for treating male sterility is spermatogonial stem cell (SSC) therapy. In this approach, sperm stem cells in the testis are transferred to a test tube, cultured and nudged into becoming fully fledged sperm. However, a key bottleneck has been identifying just the right… Read More »
By Michael Le Page The site of sperm production, as shown in a coloured scanning electron micrograph imageSTEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY The first reliable way of isolating sperm stem cells from the testes and growing them outside the body could help infertile men have genetic children of their own. A few teams have… Read More »
Leukocytospermic men are consequently of interest as they may show symptoms of heightened systemic immune activity that is not caused sperm genital tract infections Anderson, ; Purvis and Christiansen, This is partly caused sperm the blood-testes barrier Weienbauer et al. A new study links low sperm vitality weaken use of antibiotic, can passing antibiotics harmful… Read More »