Sperm News and Research

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The term sperm refers to the male reproductive cells. In the types of sexual reproduction known as anisogamy and oogamy, there is a marked difference in the size of the gametes with the smaller one being termed the "male" or sperm cell. The human sperm cell is haploid, so that its 23 chromosomes can join the 23 chromosomes of the female egg to form a diploid cell.

COVID can affect sperm quality for three months

Researchers determine whether SARS-CoV-2 could cross the blood-testis barrier and be detected in human semen after infection.

22 Dec 2021

How SARS-CoV-2 affects the male reproductive system

Researchers review the potentially harmful consequences on the male reproductive system in COVID-19 patients.

15 Dec 2021

Researchers use gene-editing to create single sex mice litters

Scientists at the Francis Crick Institute, in collaboration with University of Kent, have used gene editing technology to create female-only and male-only mice litters with 100% efficiency.

6 Dec 2021

Cannabis vapor exposure generationally affects sperm counts and motility in mice

An intense but short-term exposure to cannabis vapor lowered sperm counts and slowed sperm movement, or motility, not only in the directly exposed male mice but also in their sons.

2 Dec 2021

Impact of SARS-CoV-2 infection on testis function

A study published in the journal Nature Reviews Urology discusses the impact of coronavirus disease 2019 (COVID-19) on male fertility.

2 Dec 2021

Researchers shed light on an important stage of early human embryogenesis for the first time

Scientists have shed light on an important stage of early embryonic development that has never been fully mapped out in humans before.

29 Nov 2021

Impact of SARS-CoV-2 infection on human semen quality

A new review article aimed to extract, review and summarize these articles from the mentioned databases to determine the link between SARS-CoV-2 infection and semen quality.

3 Nov 2021

Scientists flip a new piece in the male infertility puzzle

Scientists at Cincinnati Children's appear to have flipped another piece in the underexplored puzzle of male infertility.

27 Oct 2021

Air pollution reduces sperm count by causing brain inflammation, mice study shows

Researchers have long known that air pollution can increase the risk of disorders such as obesity, diabetes, and fertility, but they did not know the exact mechanism for how it can lead to these health conditions.

25 Oct 2021

UGA study makes breakthrough for treatment of male infertility

With global rates of male infertility continuing to rise, a new study in spermatogonial stem cell research led by researchers at the University of Georgia provides hope for future clinical therapies.

19 Oct 2021

Study detects the presence of SARS-CoV-2 in semen along with low sperm count

A new study reported findings of semen analysis from a prospective COVID-19 cohort study.

15 Oct 2021

Researcher calls for a broader and more inclusive definition of infertility

Academy Research Fellow Jukka Kekäläinen from the University of Eastern Finland calls for a broader and more inclusive definition of infertility in a recent opinion piece published in the journal Human Reproduction last week.

7 Oct 2021

Researchers discover unique self-destructive process in aging nematode worms

As worm mothers age, they secrete a milk-like fluid through their vulva that is consumed by their offspring and supports their growth, according to a new study led by UCL researchers.

6 Oct 2021

Early weight loss may protect future fertility of young boys with obesity

Reproductive function in boys with obesity may be improved through weight loss, which could protect their fertility in adulthood, according to research presented today at the 59th Annual European Society for Paediatric Endocrinology Meeting.

23 Sep 2021

Young people with cancer face inequalities in fertility preservation services across the UK

Young people who survive cancer are at risk of missing out on the chance to have children in the future, due to inequalities in fertility preservation services across the UK, new research has found.

22 Sep 2021

Young people with cancer in the UK face funding lottery for fertility preservation services

Children and young people with cancer in the UK face something of a funding lottery for services to preserve their fertility, with specialist treatment centers heavily reliant on charities to stump up the cash needed, particularly in England, finds the first study of its kind, published online in the Archives of Disease in Childhood.

21 Sep 2021

New NIH-funded research to solve the male infertility and spermatogenesis puzzle

Male infertility is on the rise, with significant declines in sperm quantity and quality occurring across the human population worldwide in the past two decades.

16 Sep 2021

Increase in social stress may be connected to global population decline

A University of Massachusetts Amherst environmental health scientist has developed an "overlooked hypothesis" to help explain the projected global population decline beginning in 2064: social stress.

7 Sep 2021

Optimized strategy for generating male germ-cells from mouse pluripotent stem cells

For species that rely on sexual reproduction, including mice and men, offspring can only happen if sperm from the male fertilize eggs from the female.