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USC researchers explore genetic causes for male infertility
Researchers at the University of Southern California (USC) suggest epigenetics, or the way DNA is processed and expressed, may be the underlying cause for male infertility. The study will be published in the Dec. 12 issue of Public Library of Science One. view more (2007-12-12)
Males have adapted to battle with competing sperm
In the context of sexual reproduction, natural selection is generally thought of as a pre-copulation mechanism. We are drawn to features of the human body that tell us our partner is healthy and will provide us a fighting opportunity to carry on our genetic lineage. view more (2007-02-12)
Researchers Examine Protein Vital to Reproduction Process, Regulation May Increase Chances of Pregnancy
In its early and most critical stages, human reproduction requires precise, vital functions. The role of one sperm-delivered protein, which is crucial to the process, is being closely observed by scientists from the United States and Canada. Lab tests in recent years have produced valuable information and hopes of regulating that protein to... view more... (2007-03-20)
Spread your sperm the smart way
Attractive males release fewer sperm per mating to maximise their chances of producing offspring across a range of females, according to a new paper on the evolution of ejaculation strategies. view more (2009-07-09)
Persistent Man-made Chemical Pollutants Found in Deep-sea Octopods and Squids
New evidence that chemical contaminants are finding their way into the deep-sea food web has been found in deep-sea squids and octopods, including the strange-looking "vampire squid". These species are food for deep-diving toothed whales and other predators. view more (2008-06-10)
Gene defects could be new cause of male infertility
Scientists at the University of North Carolina at Chapel Hill have identified a gene crucial to the final step of the formation of a functional sperm cell. view more (2007-10-18)
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)
How ancient whales lost their legs, got sleek and conquered the oceans
When ancient whales finally parted company with the last remnants of their legs about 35 million years ago, a relatively sudden genetic event may have crowned an eons-long shrinking process. view more (2006-05-23)
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)
A motley collection of boneworms
It sounds like a classic horror story-eyeless, mouthless worms lurk in the dark, settling onto dead animals and sending out green "roots" to devour their bones. view more (2009-11-11)
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)
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