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Couples with fertility problems where the man is over 35 have increased difficulty in conceiving
Pregnancy rates decrease and miscarriages increase when a father is over 35 years of age, a scientist will tell the 24th annual conference of the European Society of Human Reproduction and Embryology tomorrow (Monday, July 7). (2008-07-06)
July 2008 Biology of Reproduction highlights
The July 2008 issue of Biology of Reproduction includes studies on the role of metabolic enzymes and ATP production in sperm function, and polycystic ovary syndrome. (2008-06-20)
Opioids and cannabinoids influence mobility of spermatozoids
A Ph.D. thesis from the University of the Basque Country has concluded that there are opioid and cannabinoid receptors in human sperm and that these influence the mobility of spermatozoid. (2008-06-20)
Overweight does not decrease sperm production
Overweight men are not more likely to be infertile, as past research has shown to be true in obese women, according to a new study. (2008-06-15)
On the evolutionary trail of molecules that cause Lou Gehrig's disease
What became a scientific quest for Dr. Hugo Bellen and his colleagues at Baylor College of Medicine in Houston began with trying to define the function of a protein that plays a role in the nervous system. (2008-06-12)
Young patient waited ten months before being diagnosed with cancer
A specialist cancer nurse will tell Teenage Cancer Trust's Fifth International Conference on Teenage and Young Adult Cancer Medicine on Monday how a 20-year-old man waited for ten months before doctors correctly diagnosed him as suffering from Hodgkin lymphoma, after he was delayed by the referral pathway and hospital system. (2008-06-08)
Zebrafish enable scientists to study the migration of neurons that enable sexual maturity
Scientists are watching a small group of neurons that enable sexual maturity and fertility make a critical journey: from where they form, near the developing nose, to deep inside the brain. (2008-06-04)
June 2008 highlights
Highlighted articles are (2008-05-24)
Male painters exposed to fertility damaging chemicals
Men working as painters and decorators who are exposed to glycol ethers are more likely to have poor semen quality, according to research carried out by scientists from the Universities of Sheffield and Manchester. (2008-05-23)
New method for processing rape evidence could eliminate crime-lab backlogs
Approximately 250,000 items of sexual assault evidence are mired in three- to 12-month backlogs awaiting analysis in US forensic laboratories. (2008-05-01)
Variety is the spice of life: too many males, too little time ...
Female Australian painted dragon lizards are polyandrous, that is, they mate with as many males as they can safely get access to. (2008-04-23)
Discovery about fertilization points way to possible malaria vaccine
International investigations of an organism that one UT Southwestern Medical Center researcher calls a (2008-03-25)
2008 giant panda mating season at National Zoo
The 2008 giant panda mating season began Tuesday, March 18, at the Smithsonian's National Zoo. (2008-03-20)
Levels of folate in men's diets is linked to chromosomal abnormalities in their sperm
Researchers have found an association between a vitamin found in leafy green vegetables, fruit and foods such as beans and lentils, and levels of chromosomal abnormalities in men's sperm. (2008-03-19)
Study links dietary folate intake to genetic abnormalities in sperm
It may not be just women who need extra folate in their diets to reduce the risk of birth defects. (2008-03-19)
Penn researchers identify first sex chromosome gene involved in meiosis and male infertility
A team of veterinary researchers have identified a gene on the X chromosome, which when disrupted in mice renders the males sterile and reduces female fecundity. (2008-03-14)
Pinpointing when you become a man
New data has indicated that in rats, (2008-03-13)
Significantly higher success rates with artificial insemination
In future a new method could help some couples who are childless against their will. (2008-02-06)
Teenage fathers are more likely to have babies affected by birth problems
Teenage fathers are at increased risk of having babies born with birth problems ranging from pre-term delivery or low birth weight, through to death in or near to the time of delivery, according to new research to be published in Human Reproduction journal. (2008-02-06)
Inherited individual variations influence patterns of gene shuffling
The first large-scale, high-resolution study of human genetic recombination has found remarkably high levels of individual variation in genetic exchange, the process by which parents pass on a mosaic-like mixture of their genes. (2008-01-31)
Viruses for a healthy pregnancy
Sequences of DNA in the human genome that originated from ancient viral infections have some surprising effects on our bodies and are even essential for a healthy pregnancy, according to an article in the February issue of Microbiology Today. (2008-01-29)
Why your fertility cells must have 'radio silence'
Researchers in Kobe, Japan and Montreal, Canada, have uncovered a previously unknown mechanism which causes embryonic germ cells -- which later develop into sperm or ova -- to go through a period of (2008-01-29)
Evolutionary phenomenon in mice may explain human infertility
Scientists at the University of Liverpool have found that field mice have evolved a unique way of ensuring faster fertilization, a phenomenon which could explain some cases of infertility in humans. (2008-01-23)
Quality control mechanism tags defective sperm cells inside the body
Defective sperm cells do not pass through the body unnoticed. (2008-01-23)
Biologists find unusual plant gene: abstinence by mutual consent
Biologists at the University of California, San Diego have discovered a gene in plants that disrupts fertilization only when mutations in the gene are present in both the female and male reproductive cells. (2007-12-20)
The precise role of seminal proteins in sustaining post-mating responses in fruit flies
Successful reproduction is critical to pass genes to the next generation. (2007-12-17)
Sperm's immune-protection properties could provide link to how cancers spread
Sugar-based markers on human sperm cells which may prevent them from being attacked by the female immune system could provide a vital clue to how some cancers spread in the human body, according to new research published on Dec. (2007-12-13)
New study suggests why vaccines directed against cancer, HIV don't work
Researchers from the University of Missouri and Imperial College London have found evidence suggesting why vaccines directed against the virus that causes AIDS and many cancers do not work. (2007-12-13)
USC researchers explore genetic causes for male infertility
Researchers at the University of Southern California suggest epigenetics, or the way DNA is processed and expressed, may be the underlying cause for male infertility. (2007-12-11)
Violent sex acts boost insect's immunity system
The long-held idea that only vertebrates have sophisticated adaptive immune systems that can protect them for life against many pathogens after being infected by them just once has been revised in recent years. (2007-12-04)
Tethered to chip, energy supply that drives sperm could power 'nanobot'
The biological pathway that powers sperm to swim long distances could be harnessed to nanotech devices, releasing drugs or performing mechanical functions inside the body, according to a presentation at the American Society for Cell Biology's 47th Annual meeting. (2007-12-03)
Wiggle room: Cornell researcher borrows idea from sperm to provide energy for nanoscale robots
In order to deliver medicine inside the human body, nanoscale medical devices need energy to carry out tasks, such as releasing drugs. (2007-12-03)
Matrimony inhibits Polo kinase
The restart of the meiotic cycle in Drosophila depends on both the controlled expression of Polo kinase and a protein called Matrimony (Mtrm), which binds to and physically inactivates Polo. (2007-12-03)
Mutant sperm guide clinicians to new diseases
New research published in Nature Genetics shows that some rearrangements of the human genome occur more frequently than previously thought. (2007-12-02)
In promiscuous antelopes, the 'battle of the sexes' gets flipped
In some promiscuous species, sexual conflict runs in reverse, reveals a new study published online on Nov. (2007-11-29)
New evidence for female control in reproduction
Adding another layer of competition to the mating game, scientists are reporting possible biochemical proof that the reproductive system of female mammals can (2007-11-19)
Gene in male fish lures females into sex
A gene has been found in male cichlid fish that evolved to lure female fish so that male cichlids can deposit sperm in the females mouths. (2007-11-14)
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. (2007-10-17)
X-effect: female chromosome confirmed a prime driver of speciation
Researchers at the University of Rochester believe they have just confirmed a controversial theory of evolution. (2007-10-17)
The latest about male infertility and testosterone from NewYork-Presbyterian/Weill Cornell
Two reports shed new light on male infertility. A common cause of male infertility, varicoceles, or varicose veins in the scrotum, also results in a depletion of testosterone. (2007-10-17)
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