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.

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.

7 Sep 2021

Studies offer insight into how the human body develops and acquires mutations throughout life

New insights into how the human body develops from one cell into trillions, and the genetic mutations that cells pick up along the way, have been generated by two studies from scientists at the Wellcome Sanger Institute, the University of Cambridge and their collaborators.

26 Aug 2021

Penn study shows how certain proteins have evolved to suppress cheating chromosomes

Eggs and sperm are special cells for many reasons, but one of the characteristics that sets them apart is that, unlike other human cells, which have two copies of 23 chromosomes, one from the mother and one from the father, these sex cells, or gametes, have only one.

25 Aug 2021

Population peak could contribute to less meaningful social interactions and reproduction suppression

A predicted population drop at the end of the century could be explained by stress from meaningless social interactions, according to a review article published in the Endocrine Society's journal, Endocrinology.

24 Aug 2021

Researchers discover molecule that plays an important role in sperm motility regulation

About 120 million unintended pregnancies occurred each year between 2015 and 2019 worldwide. While there are oral contraceptives for women, the development of oral contraceptives for men has not been successful.

24 Aug 2021

Researchers use gene editing to render male mosquitoes infertile and slow disease spread

Mosquitos spread viruses that cause potentially deadly diseases such as Zika, dengue fever and yellow fever. New U.S. Army-funded research uses gene editing to render certain male mosquitoes infertile and slow the spread of these diseases.

23 Aug 2021

Does SARS-CoV-2 affect male fertility?

A recently published review describes the state of current knowledge regarding the impact of SARS-CoV-2 on the male reproductive system.

23 Aug 2021

Researchers identify key protein that plays an essential role in male fertility

Mammalian sperm cannot fertilize an egg from the get-go. It's an ability acquired only after insemination, during passage through the female reproductive tract, and requires two consecutive, time-sensitive processes to provide sperm with the physical and biochemical traits necessary to complete their fundamental job.

20 Aug 2021

Sperm News and Research

Further Reading

Researcher calls for a broader and more inclusive definition of infertility

Researchers discover unique self-destructive process in aging nematode worms

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

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

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

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

Increase in social stress may be connected to global population decline

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

Studies offer insight into how the human body develops and acquires mutations throughout life

Penn study shows how certain proteins have evolved to suppress cheating chromosomes

Population peak could contribute to less meaningful social interactions and reproduction suppression

Researchers discover molecule that plays an important role in sperm motility regulation

Researchers use gene editing to render male mosquitoes infertile and slow disease spread

Does SARS-CoV-2 affect male fertility?

Researchers identify key protein that plays an essential role in male fertility

Study reveals mechanism behind male infertility caused by autoimmune disease

Structure of BRCA2 protein complex critical for DNA repair solved

Researchers identify human sperm mutations that can cause disease in children

Mutation in a single gene may be responsible for non-obstructive azoospermia in men

Researchers solve century old mystery by identifying how sex cells get the right genetic mix

Advancing Neuroscience Research Through Collaboration and Patient-Centered Innovation

The impact of vibration on microscopy

How Omics Technologies Are Transforming Biological Research and Drug Discovery

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