Current Male Infertility News and Events | Page 2

Current Male Infertility News and Events, Male Infertility News Articles.
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Male weeds may hold key to their own demise
Scientists are getting closer to finding the genes for maleness in waterhemp and Palmer amaranth, two of the most troublesome agricultural weeds in the US. Finding the genes could enable new 'genetic control' methods for the weeds, which, in many places, no longer respond to herbicides. (2020-12-11)

uOttawa-led study shows that poor sleep can lead to depression in adolescents
Chronic sleep disruption during adolescence can lead to depression in both males and females and alters stress reactivity in females, according to a new study led by University of Ottawa researchers. Their findings are particularly relevant in the context of a pandemic when adolescents' mental health is already under strain. (2020-12-07)

IVF boost: Monash researchers use acoustic waves to select high quality sperm
Monash University researchers have used acoustic waves to develop a new approach to separate high-quality sperm for assisted reproduction. These findings can open windows for infertile couples to have a family of their own using IVF. The procedure can process roughly 140 sperm per second and select more than 60,000 high-quality sperm in under 50 minutes - nearly four times faster than the current gold standard. (2020-12-04)

Researchers find 'missing link'
Otago researchers have found the ''missing link between stress and infertility''. (2020-12-03)

Molecular 'barcode' helps decide which sperm will reach an egg
A protein called CatSper1 may act as a molecular 'barcode' that helps determine which sperm cells will make it to an egg and which are eliminated along the way. (2020-12-01)

How to spot winning sperm: examine their racing stripes
Millions of sperm enter the race to fertilize, but only one wins the sprint to the egg. Now Yale researchers have discovered that these winning sperm possess a few key molecular characteristics that differentiate them from those left behind, they report Dec. 1 in the journal eLife. (2020-12-01)

Review examines sexual aggression in mammals
A recent review of published studies in non-human mammals examines 'sexual disturbance,' or male behavior towards a female around mating that can be costly for the female -- for example, that might inflict physical harm or cause mother-offspring separation. The findings are published in Mammal Review. (2020-11-18)

Lovestruck by oxytocin! Novel roles of the hormone in controlling male sexual function
Hormones are the master regulators of sexual functions in mammals. The hormone oxytocin has a well-established role in social bonding, sexual function, maternal instinct, nursing, and lactation. Researchers from Okayama University have now explored the roles of oxytocin in male sexual function for the first time. Findings from the study suggest that oxytocin-mediated control of male sexual function via the spinal cord may in fact be instrumental in treating erectile dysfunction. (2020-11-18)

A gel for dosage compensation
Researchers at the MPI of Immunobiology and Epigenetics have discovered how the MSL complex responsible for dosage compensation can distinguish the X chromosome from autosomes in flies. The Akhtar lab used a unique research approach to determine the minimal molecular components essential for recognizing the X chromosome. The study, now published in Nature, shows that the MSL2 protein and the roX RNA form a gel which ''attaches'' the MSL complex to the X chromosome. (2020-11-18)

In mice, cadmium exposure during pregnancy linked to obesity in female offspring
In a mouse study aimed at modeling human exposure to the toxic metal cadmium, researchers found that female offspring of mice exposed to cadmium during pregnancy became obese in adulthood, developed fatty livers and could not process glucose normally. Male offspring were not affected in the same way. The study also sheds light on how cadmium exposure could affect mitochondrial function and developmental signaling pathways in the liver. (2020-11-12)

Swedish, Finnish and Russian wolves closely related
The Scandinavian wolf originally came from Finland and Russia, and unlike many other European wolf populations its genetic constitution is virtually free from dog admixture. In addition, individuals have migrated into and out of Scandinavia. These findings have emerged from new research at Uppsala University in which genetic material from more than 200 wolves was analysed. The study is published in the journal Evolutionary Applications. (2020-11-10)

Two genes regulate social dominance
Using the Nobel Prize gene-editing technique, a University of Houston researcher has found that two genes regulate social dominance in cichlid fish and - possibly - humans. (2020-11-10)

RUDN University biologist found sex differences in inflammatory reactions in rat pups
A biologist from RUDN University studied the development of the immune response in prepubertal male and female animals. According to her, the severity and mortality of infectious and inflammatory diseases at this age depend not on the sex hormones, but mainly on the chromosome set or karyotype. (2020-11-09)

When new males take over, these female primates hurry up and mature
Most mammals--including humans and other primates--reach sexual maturity early or late depending on lots of different factors, such as how much food there is to eat. Now, researchers studying close primate relatives of baboons known as geladas have shown for the first time that females of this species suddenly hurry up and mature when a new male enters the picture. Their findings are reported in the journal Current Biology on November 5th. (2020-11-05)

Safety of HPV vaccines in males
A new analysis published in the British Journal of Clinical Pharmacology shows that HPV vaccines are safe and well tolerated in the male population, and the side effects that may occur after immunization are similar in both sexes. (2020-11-04)

Genetic determinants of fertility and ongoing natural selection in humans
A recent study presented at the ASHG 2020 Virtual Meeting suggests genetic variants may be associated with reproductive success. (2020-10-29)

Butterfly color diversity due to female preferences
Butterflies have long captured our attention due to their amazing color diversity. But why are they so colorful? A new publication led by researchers from Sweden and Germany suggests that female influence butterfly color diversity by mating with colorful males. (2020-10-27)

Researcher found female candidates are more likely to discuss the economy than males
In a new study published in Politics & Policy, Deserai Crow, PhD, associate professor at the University of Colorado Denver in the School of Public Affairs, found significant differences in discussion topics between both party affiliation and gender. Narratives from both Republican and Democratic candidates in 48 U.S. House campaigns from the 2018 midterm election were analyzed in this study. (2020-10-26)

Like humans, aging wild chimpanzees value their more "positive" friendships most
Like humans, wild chimpanzees focus on fewer yet more meaningful friendships as they grow older, say researchers who studied male chimps over two decades. (2020-10-22)

Oregon researchers reveal why heat stress damages sperm
University of Oregon biologists have used the model organism Caenorhabditis elegans to identify molecular mechanisms that produce DNA damage in sperm and contribute to male infertility following exposure to heat. (2020-10-22)

Delivering proteins to testes could someday treat male infertility
According to the Mayo Clinic, about 15% of couples are infertile, and male infertility plays a role in over one-third of these cases. Often, problems with sperm development are to blame. Now, researchers reporting in ACS Nano have found a way to deliver a protein important for sperm cell production directly to mouse testicles, where it restored normal sperm development and allowed previously infertile mice to father pups. (2020-10-21)

Childlessness by circumstance
Why zebra finches have problems with reproduction. (2020-10-20)

Tradition of petrified birds in the Dome of the Rock
The legend of Solomon and the birds associated with the Dome of the Rock was developed over time. Stories about the two birds demonstrate that Sufi traditions and the figure of Solomon were still very influential in shaping the appearance and conception of the Dome of the Rock. (2020-10-20)

Explaining teamwork in male lions
Biologists from the Wildlife Institute of India and the University of Minnesota demonstrated the hows and whys of cooperation among male lions. (2020-10-16)

RUDN University doctors suggested ways to reduce obstetrical complications in endometriosis patients
A team of doctors from RUDN University with their Italian colleagues had studied the data of existing studies on the effect of endometriosis on pregnancy and childbirth and suggested ways to reduce obstetrical complications in women with this condition. (2020-10-14)

Sound the alarm: More effective ways to awaken families during house fire
Researchers from the Center for Injury Research and Policy and the Sleep Disorders Center at Nationwide Children's Hospital conducted a series of studies to identify smoke alarm signals that would more effectively awaken children and other members of the household in the event of a fire. (2020-10-12)

Genomic study reveals evolutionary secrets of banyan tree
The banyan fig tree Ficus microcarpa is famous for its aerial roots, which sprout from branches and eventually reach the soil. The tree also has a unique relationship with a wasp that has coevolved with it and is the only insect that can pollinate it. In a new study, researchers identify regions in the banyan fig's genome that promote the development of its unusual aerial roots and enhance its ability to signal its wasp pollinator. (2020-10-08)

Women's incomes improve when democrats hold public office, study finds
New research from the University of California San Diego reveals that democratic control of state houses leads to substantial improvement in women's incomes, wages, and unemployment relative to men. (2020-10-08)

Research identifies sperm biomarker associated with couples' pregnancy probability
Researchers at the University of Massachusetts Amherst have identified a single-measure biomarker in sperm mitochondrial DNA that may predict male reproductive health and pregnancy success. (2020-10-06)

Hidden DNA fragment the 'trigger switch' for male development
Biology textbooks may need to be re-written, with scientists finding a new piece of DNA essential to forming male sex organs in mice. (2020-10-02)

Extra visit time with patients may explain wage gap for female physicians
A new study led by researchers from Brigham and Women's Hospital and the University of Minnesota, Minneapolis sheds light on why female primary care physicians receive lower wages than their male counterparts. (2020-09-30)

Repeated pregnancy loss may be tied to the olfactory system
Understanding the connection could lead to a new search for the causes of unexplained spontaneous miscarriage (2020-09-29)

VA Boston and BU researchers streamline PTSD diagnosis with machine learning
Now, researchers from the VA Boston Healthcare System and the Boston University School of Public Health (BUSPH) have used machine learning to explore streamlining the ''gold standard'' diagnostic tool for PTSD. (2020-09-29)

COVID-19 may deplete testosterone, helping to explain male patients' poorer prognosis
For the first time, data from a study with patients hospitalized due to COVID-19 suggest that the disease might deteriorate men's testosterone levels. (2020-09-28)

The male Y chromosome does more than we thought
While the Y chromosome's role was believed to be limited to the functions of the sexual organs, an University of Montreal's scientist has shown that it impacts the functions of other organs as well. (2020-09-25)

Bird genes are multitaskers, say scientists
Scientists from the University of Sheffield have found that although male and female birds have an almost identical set of genes, they function differently in each sex through a mechanism called alternative splicing. (2020-09-25)

Early admixture with humans led to Y chromosome replacement in late Neanderthals
In one of the first studies to comprehensively analyze Y chromosomes of humans' two closest relatives, Denisovans and Neanderthals, researchers report what prior studies have suggested: early gene flow events between archaic and modern humans led to the eventual replacement of archaic Neanderthal Y chromosomes by introgressed Homo sapiens Y chromosomes. (2020-09-24)

Boys' club barriers create issues for Australian boards
Pale, male and stale - it's certainly stereotypical, but it's a saying that still holds water when it comes to Australian boards, according to new research from the University of South Australia. (2020-09-23)

Large study confirms men have 62% increased risk of COVID-19 associated death, possibly related to higher degree of inflammation
New research presented at this week's ESCMID Conference on Coronavirus Disease (ECCVID, online 23-25 September) confirms that men with COVID-19 have worse outcomes than women, possibly related to them experiencing higher levels of inflammation. The study is by Dr Frank Hanses, University Hospital Regensburg, Germany, and colleagues, and shows that men have a 62% increased risk of COVID-19 associated death. (2020-09-23)

Suspension of fertility treatments during COVID-19 has mental health impacts
The suspension of fertility treatments due to the COVID-19 pandemic has had a variety of psychological impacts on women whose treatments were cancelled, but there are several protective factors that can be fostered to help in the future, according to a new study by Jennifer Gordon and Ashley Balsom of University of Regina, Canada, published 18 September in the open-access journal PLOS ONE. (2020-09-21)

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