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Current Sperm News and Events, Sperm News Articles.
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Cell biology: Endocannabinoid system may be involved in human testis physiology
The endocannabinoid system (ECS) may be directly involved in the regulation of the physiology of the human testis, including the development of sperm cells, according to a study in tissue samples from 15 patients published in Scientific Reports. (2019-09-19)
Large meta-analysis links IVF to higher gestational diabetes risk
Women who give birth to singleton babies following assisted reproductive technologies including vitro fertilisation (IVF) are at greater risk of developing gestational diabetes than those who conceive naturally, according to a meta-analysis involving over almost 2 million singleton pregnancies. (2019-09-18)
Buzzkill?
They say love is blind, but if you're a queen honeybee it could mean true loss of sight. (2019-09-10)
Breakdown in coral spawning places species at risk of extinction
Synchronized coral spawning has become erratic, endangering the long-term survival of coral species, Tel Aviv University researchers say. (2019-09-05)
Breakdown of spawning synchrony silently threatens coral survival in red sea reefs
Changes to the environmental conditions that underpin the reproductive success of some corals may be causing their highly synchronized mass-spawning strategy to break down, a new study finds. (2019-09-05)
The argument for sexual selection in bacteria
The evolutionary pressure to pass on DNA can produce behavior that otherwise makes no sense in a struggle to survive. (2019-09-04)
Gene linked to autism undergoes changes in men's sperm after pot use
A specific gene associated with autism appears to undergo changes in the sperm of men who use marijuana, according to new research from Duke Health. (2019-08-27)
Northern white rhino eggs successfully fertilized
After successfully harvesting 10 eggs from the world's last two northern white rhinos, Najin and Fatu, on August 22nd in Kenya, the international consortium of scientists and conservationists announces that 7 out of the 10 eggs (4 from Fatu and 3 from Najin) were successfully matured and artificially inseminated. (2019-08-26)
Successful egg harvest breaks new ground in saving the northern white rhinoceros
There are only two northern white rhinos left worldwide, both of them female. (2019-08-23)
From the tiny testes of flies, new insight into how genes arise
A common birthplace of new genes, the male testes are a hotspot for biological innovation. (2019-08-16)
A simpler way to choose the sex of offspring by separating X and Y sperm
A simple, reversible chemical treatment can segregate X-bearing sperm from Y-bearing sperm, allowing dramatic alteration of the normal 50/50 male/female offspring ratio, according to a new study by Masayuki Shimada and colleagues at Hiroshima University, published on Aug. (2019-08-13)
Transgender women case study shows sperm production is possible but not certain
One young transgender woman was able to produce viable sperm after a few months of discontinuing her puberty-halting medication, whereas a second case wasn't able to produce sperm during the time she could tolerate being off her medication. (2019-08-05)
New computational method could advance precision medicine
Scientists have devised a new computational method that reveals genetic patterns in the massive jumble of individual cells in the body. (2019-08-01)
Genome research shows that the body controls the integrity of heritable genomes
Writing in Developmental Cell, scientists at the University of Cologne presented new findings that challenge established concepts of genetic inheritance. (2019-07-24)
Cane toad testes smaller at the invasion front
Biological invasions impose novel evolutionary pressures. Individuals at an invasion front may allocate most of their resources to dispersing rather than reproducing. (2019-07-23)
Sperm may offer the uterus a 'secret handshake'
Why does it take 200 million sperm to fertilize a single egg? (2019-07-18)
Ancient epigenetic changes silence cancer-linked genes
A study in zebrafish indicates that some genes linked to cancers in humans have been strictly regulated throughout evolution. (2019-07-11)
Sneaky mating may be in female damselfies' interest
New research on damselflies in northern Africa suggests that females may facilitate the reproductive success of inferior males when their health is at risk. (2019-07-08)
New study challenges claim that exogenous RNA is essential for sperm function
Scientists from the University of Bath are challenging the claims of two high profile papers from 2018 which reported that in the mouse, RNA has to be added to sperm for them to be fully fertile. (2019-07-02)
ICSI has no outcome benefits over conventional IVF in routine non-male infertility cases
Intracytoplasmic sperm injection (ICSI), the world's favored means of fertilization in assisted reproduction, offers no benefit over conventional in vitro fertilization in fertility treatments without a male factor indication, according to results of a large multicenter study. (2019-06-26)
Paternal age over 51 years reduces success rate in IVF and ICSI
While female fertility comes to an irrevocable end with the menopause (at a consistently average age of 51 years), men are not constrained by similar biological senescence. (2019-06-26)
European pregnancy rates from IVF and ICSI 'appear to have reached a peak'
The latest annual data collected by ESHRE from European national registries (for 2016) show another rise in the cumulative use of IVF in the treatment of infertility, although success rates after IVF or ICSI appear to have reached a peak, with pregnancy rates per started treatment calculated at 27.1% after IVF and 24.3% after ICSI. (2019-06-25)
Preconceptional and prenatal exposure to paternal smoking affects semen quality of adult sons
The adverse effect of maternal smoking during pregnancy is well established and associated with several negative neonatal outcomes (such as low birth weight and preterm birth). (2019-06-25)
Long duration of sperm freezing makes no difference to live birth rates in large sperm bank study
Despite a time limit imposed in many countries on the freeze-storage of sperm, a new study from China has found that the long-term cryopreservation of semen in a sperm bank does not affect future clinical outcomes. (2019-06-24)
Frozen sperm retains its viability in outer space conditions
Zillionaires like Amazon founder Jeff Bezos who see the 'colonization' of space as an answer to the Earth's ever threatened resources will be reassured to learn that human sperm retains its complete viability within the different gravitational conditions found in outer space. (2019-06-23)
B chromosome first -- mechanisms behind the drive of B chromosomes uncovered
B chromosomes are supernumerary chromosomes, which often are preferentially inherited and showcase an increased transmission rate. (2019-06-20)
Genetic inequity towards endocrine disruptors
Phthalates are used by industry in plastic products. Their toxic effect on the endocrine system is worrying. (2019-06-13)
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. (2019-06-10)
New technique will help experts make heads or tails of male fertility
A new way of analyzing sperm that tracks the movement of the sperm tail could enable substantial improvements to male fertility testing. (2019-06-06)
No increased risk of birth defects in children of fathers treated for testicular cancer
New research has found no increased risk of congenital malformations associated with treatment with radiotherapy or chemotherapy in children of fathers with testicular cancer. (2019-06-04)
Changes to immune genes link paternal smoking with childhood asthma
New research shows that children exposed to paternal tobacco smoking before birth are more likely to develop asthma - and that associated changes to immune genes predict the level of risk. (2019-05-31)
Stress during early pregnancy is linked to reduced reproductive function in male offspring
Men whose mothers were exposed to stressful life events while they were in the first 18 weeks of pregnancy may have reduced sperm counts when they become adults, according to a study published in Human Reproduction, one of the world's leading reproductive medicine journals. (2019-05-29)
Experimental fertility preservation provides hope for young men
Testicular tissue samples obtained from 189 males who were facing procedures that could imperil fertility were cryopreserved at one university, proving the feasibility of centralized processing and freezing of testicular tissue obtained from academic medical centers, including Children's National, scattered around the world. (2019-05-23)
Older male crickets attract more females -- but have less sex
Older male crickets are better at getting females to live with them -- but they mate less than younger rivals once they find a partner. (2019-05-23)
Poor semen quality in Switzerland
A marked decrease in sperm count has been observed. And in Switzerland? (2019-05-22)
Sex sells: how masculinity is used as currency to buy sperm donors' time
Sperm banks in the United Kingdom and Australia use images and phrases associated with masculinity to attract donors because laws prohibit them from paying for sperm. (2019-05-20)
Men ignore serious health risks of steroid abuse in pursuit of the body beautiful
Many men continue to abuse steroids despite knowing that they have serious, life-limiting and potentially lethal side effects, according to findings to be presented in Lyon, at the European Society of Endocrinology annual meeting, ECE 2019. (2019-05-18)
Older fathers put health of partners, unborn children at risk, Rutgers study finds
Men who delay starting a family have a ticking 'biological clock' -- just like women -- that may affect the health of their partners and children, according to Rutgers researchers. (2019-05-12)
Female flies respond to sensation of sex, not just sperm
Female fruit flies will temporarily reject other partners after mating, thanks to special proteins in a male fly's ejaculate. (2019-05-06)
The immaculate conception?
A new, groundbreaking study by the Hebrew University of Jerusalem (HU) found a way to transform skin cells into the three major stem cell types that comprise early-stage embryos. (2019-05-02)
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