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.

Sex lives of leeches can shed light on endocrine disrupting chemicals

Today, we pull the veil back on the secret sex lives of leeches and how researchers at McMaster University and Fisheries and Oceans Canada are using that information to learn about endocrine disrupting chemicals.

21 Jul 2020

Reproductive outcomes predicted by label-free imaging technique

Researchers at the Beckman Institute for Advanced Science and Technology and the Department of Animal Sciences have collaborated to develop a new technique that can be used to determine the fertility of sperm samples.

20 Jul 2020

Hybrid fungus involved in lung infections discovered

Aspergillus latus, a species of fungus previously found only in soil or plants, has been found for the first time in a hospital environment by an international group of researchers.

19 Jul 2020

UNH scientists identify quicker and less expensive way to count sperm in lobsters

Researchers at the University of New Hampshire have identified a quicker and less expensive way to count sperm in lobsters that could help scientists looking at any animal better understand mating, a key aspect of species survival.

19 Jul 2020

Collaborative study evaluates fertility preservation counseling prior to chemotherapy

For younger cancer patients, fertility counseling at the time of diagnosis is important for making family planning decisions, according to Ranjith Ramasamy, M.D., a clinician and researcher at Sylvester Comprehensive Cancer Center at the University of Miami Miller School of Medicine.

17 Jul 2020

New reliable method for treating male sterility

Infertility affects one in seven men of reproductive age worldwide. One idea for treating male sterility is spermatogonial stem cell (SSC) therapy.

14 Jul 2020

Novel testicular luminal protein is vital for male fertility

Newly produced spermatozoa within the testis are not fully functional until they mature in the epididymis, a duct that helps to transport and store sperm.

9 Jul 2020

New technique reduces cell damage, improves IVF rates

Motile sperm are difficult to collect with a conventional cell sorter because they are vulnerable to physical damage.

2 Jul 2020

Abnormal findings in testicular tissue of COVID-19 patients, SARS-CoV-2 mostly undetected

The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has caused over 9.263 million cases and taken more than 477,000 lives as of June 24, 2020 – just six months after the initial outbreak in Wuhan, China, was reported. The illness, called COVID-19 disease, caused by SARS-CoV-2 is a severe pneumonic illness, caused by the entry of the virus into the type II alveolar cells.

24 Jun 2020

Differences in accumulation of genetic mutations could help predict lifespan, fertility

Differences in the rate that genetic mutations accumulate in healthy young adults could help predict the remaining lifespan in both sexes and the remaining years of fertility in women, according to the University of Utah Health scientists.

19 Jun 2020

BioRescue consortium is developing new technologies to prevent the extinction of species

In order to prevent the extinction of species such as the northern white rhino, the BioRescue consortium is developing new methods and technologies for conservation.

17 Jun 2020

Newfound knowledge may prove valuable to understand human nerve cells

Researchers discover what's behind nature's perhaps largest erection - which is not that big PLANT BIOLOGY.

16 Jun 2020

The egg decides which sperm fertilizes it

There is ample evidence to show that as millions of human sperm cells swim towards a waiting ovum or egg, only one gets to fertilize it. Now, a new study shows that even though the fastest and most capable sperms reach the ovum first, it is the egg that has the final say on which sperm fertilizes it. The study titled, "Chemical signals from eggs facilitate cryptic female choice in humans," is published in the latest issue of the journal Proceedings of the Royal Society B.

11 Jun 2020

Exposure to flame retardant impacts paternal reproduction

A new study from the University of Georgia has shown that exposure to a now-banned flame retardant can alter the genetic code in sperm, leading to major health defects in children of exposed parents.

9 Jun 2020

Study links a specific procedure to pregnancy complications in assisted reproduction

An experimental study from researchers in the Perelman School of Medicine at the University of Pennsylvania links a specific procedure - embryo culture - that is part of the assisted reproduction process (ART) to placental abnormalities, risk for preeclampsia, and abnormal fetal growth.

8 Jun 2020