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Current Sperm News and Events, Sperm News Articles.
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New study shows effects on offspring of epigenetic inheritance via sperm
As an organism grows and responds to its environment, genes in its cells are constantly turning on and off, with different patterns of gene expression in different cells. (2019-03-20)
Mathematicians reveal secret to human sperm's swimming prowess
Researchers, from the universities of York and Oxford, have discovered that a reinforcing outer-layer which coats the tails of human sperm is what gives them the strength to make the powerful rhythmic strokes needed to break through the cervical mucus barrier. (2019-03-19)
World's oldest semen still viable
Ram semen stored at the University of Sydney for 50 years has been used to successfully impregnate 34 ewes, with fertility rates as high as recently stored semen. (2019-03-17)
DNA of sperm taken from testicles of infertile men 'as good as sperm from fertile men'
Scientists have found that sperm DNA from the testicles of many infertile men is as good as that of ejaculated sperm of fertile men. (2019-03-16)
Mysterious males: Asexual female nematodes produce males for sperm, not genes
Getting at why nematodes engaged in a unique female-favoring reproduction strategy produce males at all, researchers report that the asexual females produce limited numbers of male offspring to exploit them for their sperm in order to make more males, and in a ratio meaning the resultant sons are more likely to mate with their sisters. (2019-03-14)
In this nematode species males are needed for reproduction but not their genes
In the Mesorhabditis belari roundworm, the sole purpose of males is to help females produce clones of themselves. (2019-03-14)
Chemical pollutants in the home degrade fertility in both men and dogs, study finds
New research by scientists at the University of Nottingham suggests that environmental contaminants found in the home and diet have the same adverse effects on male fertility in both humans and in domestic dogs. (2019-03-04)
Let the sperm races begin
For best chances of in vitro fertilization success, the most motile sperm are chosen from semen. (2019-03-04)
First semi-identical twins identified in pregnancy
Boy and girl twins in Brisbane, Australia, have been identified as only the second set of semi-identical, or sesquizygotic, twins in the world -- and the first to be identified by doctors during pregnancy. (2019-02-27)
Sperm quality unaffected by one course of chemotherapy for early testicular cancer
Men with early stage testicular cancer can safely receive one course of chemotherapy or radiotherapy after surgery without it having a long-term effect on their sperm count, according to a study published in Annals of Oncology. (2019-02-24)
Scientists solve mystery of a fish called Mary's 'virgin' birth
A female stickleback fish, nick-named 'Mary,' has produced offspring from eggs that appear to have been fertilized while they were still inside her, according to scientists at the University of Nottingham. (2019-02-20)
Scientists reveal how 3D arrangement of DNA helps perpetuate the species
From fathers to children, the delivery of hereditary information requires the careful packing of DNA in sperm. (2019-02-18)
'Old' sperm produces healthier offspring
Research shows that sperm that live for longer before fertilising an egg produce healthier offspring. (2019-02-14)
In zebrafish eggs, most rapidly growing cell inhibits neighbors through mechanical signals
In animal embryonic development a group of cells starts out all being the same. (2019-02-14)
How men continually produce sperm -- and How that discovery could help treat infertility
Using a leading-edge technique, UC San Diego School of Medicine researchers defined the cell types in both newborn and adult human testes and identified biomarkers for spermatogonial stem cells, opening a path for new strategies to treat male infertility. (2019-02-05)
Unexpected results suggest a few joints may not harm men's sperm
Researchers investigating the effect of cannabis smoking on men's testicular function have made the unexpected discovery that it is linked to higher sperm counts and higher testosterone levels among moderate users compared to men who never smoked it. (2019-02-05)
Marijuana smoking linked with higher sperm concentrations
Men who have smoked marijuana at some point in their life had significantly higher concentrations of sperm when compared with men who have never smoked marijuana, according to new research led by Harvard T.H. (2019-02-05)
'More work needed' for new IVF technique
Treating male infertility using a new IVF technique called PICSI, which is already offered in some private clinics, does not increase the likelihood of having a baby, according to the results of a randomized controlled trial. (2019-01-31)
Layered cocktails inspire new form of male birth control
For decades, women have shouldered most of the burden of contraception. (2019-01-30)
Study shows dangerous bee virus might be innocent bystander
Researchers at the University of Sydney have found that the relationship between the Varroa mite and virulence of a virus of honey bees, has been misunderstood. (2019-01-29)
Kick-starting the genome in early development
We can think of the egg and sperm as information capsules with stored instructions for starting a new life, but post fertilisation, what kick starts the interpretation of these instructions? (2019-01-28)
Insufficient evidence' that antidepressants affect fertility or infertility-treatment outcomes
Based on limited research, there's no strong evidence that selective serotonin-reuptake inhibitors (SSRIs) -- the most widely used class of antidepressants -- have an adverse impact on fertility, according to a paper in the Harvard Review of Psychiatry. (2019-01-24)
Breakthrough in understanding male infertility
Newcastle University experts have identified the importance of gene, RBMXL2, which is similar to an infertility gene found on the Y chromosome, in regulating the production of fully-functioning sperm. (2019-01-23)
Fruit fly promiscuity alters the evolutionary forces on males
Researchers in the Department of Zoology at Oxford University have demonstrated for the first time what effect female fruit flies having multiple partners has on sexual selection -- before and after mating. (2019-01-17)
Cilia beat to an unexpected rhythm in male reproductive tract, study in mice reveals
Waves of undulating cilia drive several processes essential to life. (2019-01-14)
Recurrent miscarriage linked to faulty sperm
Multiple miscarriages may be linked to the poor quality of a man's sperm, suggests new research. (2019-01-04)
What makes two species different?
For most of the 20th century, scientists believed that the reproductive incompatibility between species evolved gradually as a by-product of adapting to different environments. (2019-01-03)
How sperm stem cells maintain their number
Researchers including Asstistant Professor Yu Kitadate and Professor Shosei Yoshida (developmental biologists at the National Institute for Basic Biology in Japan) and Professor Benjamin Simons (a theoretical physicist at the University of Cambridge in the UK) have revealed a novel mechanism for stem cell number control. (2018-12-20)
Exposure to cannabis alters the genetic profile of sperm
New research from Duke Health suggests men in their child-bearing years should consider how THC could impact their sperm and possibly the children they conceive during periods when they've been using the drug. (2018-12-19)
Duration of infertility in men may affect sperm count
A longer duration of infertility was associated with lower sperm count and other parameters of impaired sperm in a BJU International study of 1644 infertile men. (2018-12-05)
DNA damage leads to genetic diseases and cancer
Scientists revealed how DNA damage influences mutations. Turned out that its contribution to mutagenesis was underestimated and many of the inheritance mutations are caused not by errors in DNA doubling, but by damage to this fragile molecule. (2018-12-05)
Dirty air now could harm hearts of offspring later
A parent's exposure to dirty air before conception might spell heart trouble for the next generation, a new animal study suggests. (2018-12-05)
Mechanism safeguarding unique epigenome of oocytes and maternal fertility
Recently, a joint research group led by Dr. ZHU Bing from the Institute of Biophysics of the Chinese Academy of Sciences reveals that Stella sequestered UHRF1 from the nucleus through an active nuclear export process, and the dysregulation of UHRF1 by loss of Stella resulted in an accumulation of aberrant DNA methylation during postnatal oogenesis. (2018-11-28)
Certain dietary or nutritional supplements could improve sperm quality
Infertility affects 15 percent of the world population and is recognized by the WHO as a global health problem. (2018-11-26)
Sperm count 50 percent lower in sons of fathers who smoke
Studies have repeatedly linked maternal smoking during pregnancy with reduced sperm counts in male offspring. (2018-11-22)
How sperm find their way
Researchers have found that a protein in the cell membranes of sperm plays a key role in how they find their way to eggs. (2018-11-15)
A bigger nose, a bigger bang: Size matters for ecoholocating toothed whales
A new study sheds light on how toothed whales adapted their sonar abilities to occupy different environments. (2018-11-15)
Climate change damaging male fertility
Climate change could pose a threat to male fertility -- according to new research from the University of East Anglia. (2018-11-13)
UTSA constructs world's most comprehensive digital roadmap to unlock male infertility
Millions of couples who have trouble conceiving may get relief from new research led by scientists at The University of Texas at San Antonio. (2018-11-07)
How invading jumping genes are thwarted
Almost half of our DNA is made up of jumping genes, moving around the genome in developing sperm and egg cells. (2018-11-01)
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