Popular Sperm News and Current Events

Popular Sperm News and Current Events, Sperm News Articles.
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Buzzkill?
They say love is blind, but if you're a queen honeybee it could mean true loss of sight. New research from UC Riverside finds male honeybees inject toxins during sex that cause temporary blindness. (2019-09-10)

Diverse and abundant megafauna documented at new Atlantic US Marine National Monument
Airborne marine biologists were dazzled by the diversity and abundance of large, unusual and sometimes endangered marine wildlife on a recent trip to the Northeast Canyons and Seamounts National Marine Monument, about 150 miles southeast of Cape Cod. (2018-05-16)

Does physical activity influence the health of future offspring?
Physical and mental exercise is not only beneficial for your own brain, but can also affect the learning ability of future offspring -- at least in mice. Researchers from the German Center for Neurodegenerative Diseases (DZNE) report these findings in the journal Cell Reports. (2018-04-10)

Life-history traits may affect DNA mutation rates in males more than in females
Large-scale DNA sequencing data have been used to investigate a long-standing evolutionary assumption -- that DNA mutation rates are influenced by such life-history traits as the time between an individual's birth and the birth of its offspring. One of the implications of this research is that life-history traits of extinct species now could be discoverable. (2011-06-13)

The mysterious sexual life of the most primitive dragonfly
The dragonfly considered the most primitive in the world lives in Australia and Tasmania, and was believed to be extinct four decades ago. But it is far from being so. A Galician researcher has observed thousands of these insects in one of the few habitats in which it has been detected and it displays sexual behavior that is unique, not only directed towards reproduction. (2016-05-31)

Sperm changes documented years after chemotherapy
A Washington State University researcher has documented epigenetic changes in the sperm of men who underwent chemotherapy in their teens. (2017-02-01)

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. Chan School of Public Health. The study also found that there was no significant difference in sperm concentrations between current and former marijuana smokers. (2019-02-05)

Fanconi anemia: Insight from a green plant
Fanconi anemia is a human genetic disorder with severe effects, including an increased risk of cancer and infertility. Research in plants helps us understand the disease in humans, showing how a key protein functions in the exchange of genetic material. (2018-01-19)

Dimethandrolone undecanoate shows promise as a male birth control pill
A new birth control pill for men appears to be safe when used daily for a month, with hormone responses consistent with effective contraception, study researchers say. Their study results, in 83 men, will be presented Sunday at ENDO 2018, the Endocrine Society's 100th annual meeting in Chicago, Ill. (2018-03-18)

UEA research paints underwater pictures with sound
Silent marine robots that record sounds underwater are allowing researchers to listen to the oceans as never before. While pilot whales make whistles, buzzes and clicks, pods of hunting dolphins create high-pitched echolocation clicks and larger species such as sperm whales make louder, slower clicks. As well as eavesdropping on marine life, the recordings can be used to measure sea-surface wind speed and monitor storms. The research will be presented at the General Assembly of the European Geosciences Union, Vienna. (2018-04-10)

Worm species lost 7,000 genes after evolving to fertilize itself
Reproduction in most animal species requires breeding between two individuals. But some worms have evolved the ability to go it alone. In these species, a single individual can breed with itself to produce offspring. A new University of Maryland-led study found that gaining this ability, known as 'selfing,' may have caused a worm species to lose a quarter of its genome, including genes that give male sperm a competitive edge during mating. (2018-01-04)

Conception during IUD use increases risks to mother and infant -- Ben-Gurion University study
;We believe this is the first report tracking children born to mothers using an IUD over a long timeframe,; says Dr. Gali Pariente, a faculty member of the BGU Division of Obstetrics and Gynecology, BGU Faculty of Health Sciences and a clinical instructor at Soroka. 'Working with a large sample over 23 years allowed us to investigate obstetric parameters that hadn't been examined previously in large groups.' (2018-01-08)

No sex for all-female fish species
They reproduce through gynogenesis. Their offspring are clones of the mother. According to established theories, the Amazon molly should have become extinct a long time ago. A new study shows how the fish avoids this fate. (2018-02-12)

New research on sperm stem cells has implications for male infertility and cancer
New research from scientists at Huntsman Cancer Institute (HCI) at the University of Utah and collaborators at University of Utah Health (U of U Health) sheds light on the complex process that occurs in the development of human sperm stem cells. (2017-10-05)

Fathers can influence the sex of their offspring, scientists show
It has traditionally been thought that in mammals only mothers are able to influence the sex of their offspring. But a new study in wild mice led by Dr Aurelio Malo of Oxford University's Department of Zoology has shown that fathers can, in fact, influence sex ratios. (2017-09-11)

Significantly higher success rates with artificial insemination
In future a new method could help some couples who are childless against their will. The microscopic procedure significantly improves the success rate of ICSI. This was discovered by scientists at the University of Bonn together with colleagues from China and industrial partners in a study of 124 women. (2008-02-06)

New steps in the meiosis chromosome dance
Where would we be without meiosis and recombination? A new paper published online Jan. 6 in the journal Science describes how proteins called SUMO and ubiquitin and molecular machines called proteasomes play a crucial role in DNA recombination during meiosis. (2017-01-23)

In vitro fertilization linked with increased risk of congenital heart defects
A new analysis of published studies found a 45 percent increased risk of congenital heart defects in newborns when women become pregnant via in vitro fertilization (IVF)/intracytoplasmic sperm injection (ICSI) than through spontaneous conception. (2017-11-22)

The silence of the genes
Research led by Dr. Keiji Tanimoto from the University of Tsukuba, Japan, has brought us closer to understanding the mechanisms underlying the phenomenon of genomic imprinting. In this intriguing event, one copy of a gene is 'turned off,' or silenced, depending on whether it was derived from the mother or the father. (2015-11-24)

Male infertility: Urogenital infection as a possible cause
In couples who have not been able to have children, male infertility is the cause in at least half of cases. In 6-10% the cause is a urogenital infection. The risk of irreversible infertility associated with urogenital infections in men should not be underestimated, say Hans-Christian Schuppe and coauthors in a review article in the current issue of Deutsches Ärzteblatt International (Dtsch Arztebl Int 2017; 114: 321-7). (2017-06-14)

Low sperm count not just a problem for fertility
A man's semen count is a marker of his general health, according to the largest study to date evaluating semen quality, reproductive function and metabolic risk in men referred for fertility evaluation. The study results, in 5,177 male partners of infertile couples from Italy, will be presented Sunday at ENDO 2018, the Endocrine Society's 100th annual meeting in Chicago, Ill. (2018-03-18)

Study examines sperm production in men with testicular cancer
In a study of men with testicular cancer, increasing tumor size relative to testis size was linked with a reduced ability to produce sperm. (2018-04-19)

Men may contribute to infertility through newly discovered part of sperm
The research identifies a new structure in human sperm that functions in the zygote and may provide new avenues for addressing male infertility and insights into early embryo developmental defects. (2018-06-07)

The origin of flower making genes
A research team led by Professor Mitsuyasu Hasebe of the National Institute for Basic Biology revealed that the MADS-box genes control sperm motility and cell division and elongation of the stem of gametophores, using the moss Physcomitrella patens. (2018-01-10)

New insight into how brain cells die in Alzheimer's and FTD
Removal of a regulatory gene called LSD1 in adult mice induces changes in gene activity that that look unexpectedly like Alzheimer's. Another surprise: LSD1 is tangled up in brain samples from humans with Alzheimer's and frontotemporal dementia (FTD), suggesting LSD1 as a central downstream player in these diseases and a drug target. (2017-10-09)

Sperm RNA may serve as biomarkers of future health, Wayne State researchers find
Human sperm may hold the potential to serve as biomarkers of the future health of newborn infants, according to a new study by a Wayne State University School of Medicine research team. (2017-12-01)

Refrigeration technology to maintain cold-stored mouse sperm viability for 10 days
A Japanese research team has succeeded in developing a refrigeration preservation technology that maintains the fertilization functionality of mouse sperm for 10 days. Previously, the maximum freezing period was limited to three days, but by extending the preservation period by over three times that amount, it is now possible to send sperm of genetically modified mice to research organizations around the world. (2017-12-04)

In roundworms, fats tip the scales of fertility
Two University of Colorado Boulder scientists have discovered how fat levels in a tiny soil-dwelling roundworm (C. elegans) can tip the balance between whether the worm makes eggs or sperm. Although the researchers discovered this phenomenon in worms, the research could have implications for future studies into human fertility and reproductive development. (2017-04-20)

Fertility can hinge on swimming conditions in the uterus
A Washington State University researcher has found that the uterus in female mice contains enzymes that can break down semen, making it less gel-like, more watery, and therefore easier to swim in. This interplay between semen and the female reproductive tract can impact fertility. (2017-04-19)

Glowing millipede genitalia help scientists tell species apart
Researchers studying near-identical species of millipedes found a new way to tell them apart: shining a blacklight on them. Under the UV light, parts of the different species' genitals will glow different colors. This discovery has allowed scientists to rewrite this part of the millipede family tree. (2019-04-18)

UC biologist looks at butterflies to help solve human infertility
UC biologist helps decode the structural complexities of male butterfly ejaculate and co-evolving female reproductive tract. Findings from these biochemical relationships may help unlock certain mysteries of human infertility. (2017-06-27)

Spinning semen provides a measurement of fertility
The maths of collective behavior has provided a new technique for selecting the best semen for artificial insemination in livestock. (2016-10-14)

Taurine deficiency in sperm causes male infertility, study finds
Sperm cells have a unique shape that allows them to travel. During fertilization, sperm pass through several physiological environments while still maintaining their shape, using poorly understood mechanisms. Researchers at the University of Tsukuba and Cornell University found that male mice lacking cysteine dioxygenase, a protein involved in taurine production, have severely impaired fertility, and that taurine production allows sperm cells to maintain their shape in response to changing water levels in their environment. (2018-05-11)

New research: Increased stress on fathers leads to brain development changes in offspring
New research in mice has found that a father's stress affects the brain development of his offspring. This stress changes the father's sperm, which can then alter the brain development of the child. This new research provides a much better understanding of the key role that fathers play in the brain development of offspring. (2018-02-16)

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. The study is published in Human Reproduction. (2019-02-05)

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. Much like previous research that has shown tobacco smoke, pesticides, flame retardants and even obesity can alter sperm, the Duke research shows THC also affects epigenetics, triggering structural and regulatory changes in the DNA of users' sperm. (2018-12-19)

'Old' sperm produces healthier offspring
Research shows that sperm that live for longer before fertilising an egg produce healthier offspring. What's more, these offspring go on to have longer, healthier lifespans -- and in turn produce more and healthier offspring themselves. It was assumed that it doesn't matter which sperm fertilises an egg. But this shows that there are massive differences between sperm and how they affect offspring. The research was carried out in zebrafish but may have implications for human fertility. (2019-02-14)

Marijuana and fertility: Five things to know
For patients who smoke marijuana and their physicians, 'Five things to know about ... marijuana and fertility' provides useful information for people who may want to conceive. The practice article is published in CMAJ (Canadian Medical Association Journal). (2019-06-10)

Prenatal exposure to plasticizer may affect male fertility in future generations
Chemicals found in a variety of routinely used consumer products may be contributing to the substantial drop in sperm counts and sperm quality among men in recent decades, a new study in mice suggests. (2018-03-17)

Collecting sperm from Covid-19 patients
How does Covid-19 affect sperm and thus the next generation┬┤s immune system? Norwegian researchers are collecting sperm to find the answer. (2020-10-30)

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