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.

How does COVID-19 and its treatment affect testicular function?

Researchers summarized available information related to the reproductive effects of COVID-19 in men.

23 Oct 2022

Monkeypox virus infection and its persistence in the testes of infected crab-eating macaques

Researchers performed retrospective detection of the monkeypox virus in the testes of nonhuman primates.

22 Oct 2022

Remnants of ancient viruses in the human genome are active in normal tissues

Remnants of ancient viruses in the human genome are active in healthy tissues as well as diseased ones, limiting their utility as disease biomarkers, according to a study by Aidan Burn at Tufts University in Boston, USA and colleagues, publishing October 18th in the open access journal PLOS Biology.

18 Oct 2022

Scientists detect monkeypox virus in the testes of macaques during acute infection

For the first time, scientists have detected monkeypox virus in the testes of macaques during the acute phase of infection, according to research published online today in the journal Nature Microbiology.

17 Oct 2022

Review on COVID-19 biomedical waste-derived microplastic toxicity

In a new study, researchers reviewed existing literature on the biomedical waste source, elements, and the recent upsurge of microplastics during the SARS-CoV-2 pandemic.

11 Oct 2022

Age plays a more important role than genetics in affecting gene expression profiles as we get older

Amid much speculation and research about how our genetics affect the way we age, a University of California, Berkeley, study now shows that individual differences in our DNA matter less as we get older and become prone to diseases of aging, such as diabetes and cancer.

7 Oct 2022

Oxytocin induces epicardial cell proliferation, study finds

The neurohormone oxytocin is well-known for promoting social bonds and generating pleasurable feelings, for example from art, exercise, or sex. But the hormone has many other functions, such as the regulation of lactation and uterine contractions in females, and the regulation of ejaculation, sperm transport, and testosterone production in males.

30 Sep 2022

Love hormone can activate heart repair mechanisms after cardiac injury, study finds

Researchers show for the first time that the neurohormone oxytocin has a previously unsuspected function in both zebrafish and human cell cultures: it stimulates mature cells in the epicardium of the heart to become stem-like cells, which can replace heart cells lost after damage.

30 Sep 2022

What is the risk of hypertensive disorders in pregnancies after assisted reproduction?

A recent Hypertension study evaluated whether the risk of incidence of HDP following fresh-ET and frozen-ET was higher than in naturally conceived pregnancies.

29 Sep 2022

Study shows how a common epigenetic modification can be transmitted across multiple generations

Without altering the genetic code in the DNA, epigenetic modifications can change how genes are expressed, affecting an organism's health and development.

27 Sep 2022

What is the impact of SARS-CoV-2 infection on semen parameters and sex hormones?

A new study aimed to systematically review studies investigating sex hormones and semen parameters in COVID-19 patients to provide a better understanding and treatment approach.

27 Sep 2022

Study reveals key role of AKG/OXGR1 signaling pathway in maintaining male reproduction

Infertility is a global public health problem caused by genetic defects, lifestyle, nutrition, and factors affecting the local metabolism and microenvironment of the reproductive system.

26 Sep 2022

IVF using frozen embryos may be linked with higher risk of hypertensive disorders in pregnancy

In vitro fertilization (IVF) using frozen embryos may be associated with a 74% higher risk of hypertensive disorders in pregnancy, according to new research published today in Hypertension, an American Heart Association journal.

26 Sep 2022

No adverse affect on sperm quality 6 to 14 months post BNT162b2 COVID vaccine

A study published in the journal Gamete Biology demonstrates that the mRNA-based coronavirus disease 2019 (COVID-19) vaccine developed by Pfizer/BioNTech is not detrimental to sperm health over a long period post-vaccination.

20 Sep 2022

Is there any impact of COVID-19 vaccines on the fertility of men and women of reproductive age?

Researchers assessed the impact of SARS-CoV-2 vaccines on human fertility.

19 Sep 2022

New mechanism may prevent the natural aging of immune cells

A new mechanism that slows down and may even prevent the natural aging of immune cells – one of the nine 'hallmarks of aging' – has been identified by an international team led by UCL scientists.

15 Sep 2022

Study reveals pan-antiviral properties of PDC-109 bovine seminal plasma protein

In a new study, researchers explored the antiviral activity of the bovine seminal plasma protein PDC-109 against various mammalian viruses, including severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2).

15 Sep 2022

Children more likely to develop asthma if their father was exposed to second-hand smoke in childhood

Children are more likely to develop asthma if their father was exposed to second-hand smoke when he was a child, according to a study published today (Thursday) in the European Respiratory Journal. The study also shows that children's risk of asthma is even higher if their father was exposed to second-hand smoke and went on to become a smoker.

14 Sep 2022

The effect of cannabis exposure on the entire sperm DNA methylome in rats

A new study examines how cannabis use among men could cause heritable effects on male fertility.