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Study looks at mitochondrial variation in sperm traits and sperm competitive ability
University of Nevada, Reno researchers Jeanne and David Zeh of the Department of Biology have received a five-year, $650,000 grant from the National Science Foundation to investigate the effects of natural mitochondrial variation on sperm traits and sperm competitive ability. view more (2007-09-20)
First direct evidence that environmental oestrogens affect sperm fertility
Researchers have found the first evidence that oestrogens from the environment, and also ones that occur naturally in our bodies, significantly affect the fertilising ability of sperm. Prof Lynn Fraser told the annual conference of the European Society of Human Reproduction and Embryology in Vienna today (Tuesday 2 July) that environmental... view more... (2002-06-30)
Jackson Laboratory scientists announce mouse sperm cryopreservation breakthrough
A team of Jackson Laboratory scientists have figured out a simple, cost-effective process to freeze mouse sperm and get it to achieve high fertilization rates with mouse eggs. view more (2008-07-30)
New leads in the development of an oral contraceptive for men
Latest research at Oxford University’s Glycobiology Institute has provided new leads towards the development of an oral contraceptive for men. The advantages of the substance at the centre of the research, an alkylated imino sugar (NB-DNJ), are that it does not affect reproductive hormones, its effects are easily reversed and it is... view more... (2002-12-11)
Tool helps doctors tailor infertility treatments for couples
Physicians must consider a number of variables when treating couples who cannot naturally conceive because of factors involving both the woman and man. view more (2006-02-23)
Damage to sperm DNA affects older men's chances of fathering children
Damage to DNA in sperm is significantly higher in older men than in those who are younger, according to research presented today (Tuesday 21 June 2005) at the 21st annual conference of the European Society of Human Reproduction and Embryology. view more (2005-06-21)
Parental Smoking Around Time Of Conception Linked To Reduction In Male Births (p 1407)
Couples who smoke around the time of conception could have a reduced chance of conceiving male offspring, suggest authors of a research letter in this week's issue of THE LANCET. The male to female ratio of children has declined substantially over the past few decades. The reason for this reduction is not clear, but it has been suggested that... view more... (2002-04-17)
World-first stem cell research could aid male infertility
Scientists have shown for the first time that sperm grown from embryonic stem cells can be used to produce offspring. view more (2006-07-11)
Sperm trading can resolve hermaphrodite mating conflicts
By directly manipulating mating performance in a tropical sea slug, Chelidonura hirundinina, researchers of the University of T√°bingen have now shed light on the bizarre reproductive conflicts encountered by hermaphroditic animals. view more (2005-10-11)
Human testes may multiply mutations
The testes in humans may act as mutation multipliers that raise the odds of passing improved DNA to offspring - but that can also backfire by increasing the frequency of certain diseases. view more (2007-08-28)
Synthetic Cannabinoid May Aid Fertility in Smokers
A reproductive medicine specialist at the University at Buffalo has shown that a new compound may improve the fertility of tobacco smokers who have low sperm count and low percentage sperm motility. view more (2006-12-04)
Italian study finds traffic pollution affects male fertility
A study by Italian researchers of motorway tollgate attendants has demonstrated that traffic pollution damages the quality of sperm in young and middle-aged men. In research published today (Wednesday 30 April) in Europe's leading reproductive medicine journal Human Reproduction[1] the research team from the University of Naples say their work... view more... (2003-04-26)
Romance, schmomance - Natural selection continues even after sex
Some breaking news, just in time for Valentine's Day: Researchers have identified something called 'sperm competition' that they think has evolved to ensure a genetic future. In sexual reproduction, natural selection is generally thought of as something that happens prior to - and in fact leads to - the Big Event. view more (2007-02-13)
CSHL scientists discover how 'companion' cells to sperm protect them from genetic damage
In plant pollen grains, sperm cells, which carry the genetic material to be passed on to progeny, are cocooned within larger "companion" cells that are called pollen vegetative cells. These companions provide sperm with energy and nourishment, and push them towards their targets during fertilization. view more (2009-02-06)
First research to show that diabetes damages DNA in men's sperm and may affect fertility
Scientists have found that sperm from diabetic men have greater levels of DNA damage than sperm from men who do not have the disease. They warn that such DNA damage might affect a man's fertility. view more (2007-05-03)
Size did matter
The mystery of giant sperm present in some living animal groups today has taken on a new dimension. In one group of micro-crustaceans new evidence shows the feature is at least 100 million years old. view more (2009-06-19)
Small RNAs can play critical roles in male infertility/contraception
University of Nevada School of Medicine scientists in the Department of Physiology and Cell Biology have discovered insight into the reproductive workings of the male sex chromosome that may have significant implications for male infertility and contraception. view more (2009-04-10)
Minimally invasive treatment helps infertile couples conceive
Couples struggling with infertility face uncertain odds when considering various treatment options. But a new study reveals that embolization, a minimally invasive treatment for arguably the most common cause of infertility in men, can significantly improve a couple's chances for pregnancy. view more (2006-11-29)
Treating male infertility with stem cells
New research has examined the usefulness of bone marrow stem cells for treating male infertility, with promising results. The related report by Lue et al, "Fate of bone marrow stem cells transplanted into the testis: potential implication for men with testicular failure," appears in the March issue of The American Journal of Pathology. view more (2007-03-02)
High levels of cycling training damage triathletes' sperm
The high-intensity training undertaken by triathletes has a significant impact on the quality of their sperm. view more (2009-06-30)
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