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.

State-of-the-art 3D microscopy reveals how human sperms swim

Using state-of-the-art 3D microscopy and mathematics, Dr Hermes Gadêlha from the University of Bristol, Dr Gabriel Corkidi and Dr Alberto Darszon from the Universidad Nacional Autonoma de Mexico, have reconstructed the movement of the sperm tail in 3D with high-precision.

14 Aug 2020

New theory shows why Y chromosome may be more resilient than previously believed

The Y chromosome, which is relatively smaller than its counterpart, the X chromosome, has significantly reduced in size across 200 million years of evolution.

7 Aug 2020

Scientists explore the role of epigenetic regulator factors in embryonic development

A research team at the Max Planck Institute for Molecular Genetics in Berlin has explored the role of factors in embryonic development that do not alter the sequence of DNA, but only epigenetically modify its "packaging".

5 Aug 2020

A fast and less expensive technique 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.

20 Jul 2020

Retinoic acid is the key to produce healthy offspring from testicular tissue transplantation

One in fifty births in Japan are said to be through in vitro fertilization, and many couples remain unable to conceive for reasons unknown. Infertility is also an undesired side-effect of lifesaving cancer treatment in childhood.

17 Jul 2020

Combination of ExM and SIM helps observe 3D ultrastructure of synaptonemal complex

The development of egg and sperm cells in all mammals, including humans, is significantly contributed by the synaptonemal complex—a ladder-like cell structure.

6 Jul 2020

RDP1 gene regulates the production of pollen grains

An international study has discovered a gene in the plant model Arabidopsis that reduces the number of pollen grains.

9 Jun 2020

C19ORF57 gene could advance reproductive medicine

The gene C19ORF57 has been identified to play a major role in meiosis by the Institute of Molecular Embryology and Genetics at Kumamoto University.

5 Jun 2020

New insights into recombination of sex chromosomes during meiosis

As chromosomes go, X and Y make an unlikely pair. The X is large and contains thousands of genes critical for life.

29 May 2020

Nanodevices give unprecedented peek into how cells change with time

For the first time, scientists have introduced minuscule tracking devices directly into the interior of mammalian cells, giving an unprecedented peek into the processes that govern the beginning of development.

From University of Bath 27 May 2020

New 3D imaging method can identify sperm cells moving at a high speed

Tel Aviv University researchers have developed a safe and accurate 3D imaging method to identify sperm cells moving at a high speed.

12 May 2020

Researchers discover new therapeutic targets for cancer, male infertility

Researchers analyzed 13,000 tumors, highlighting two formerly overlooked genes as promising new therapeutic targets for treating cancer.

7 May 2020

How Small Chromosomes Compete With Big Ones For A Cell's Attention

From avocado plants to yeast, sexually reproducing organisms must create germ cells that contain half the number of chromosomes found in a typical body cell.

7 May 2020

Father's Toxoplasma infection may be transmitted to subsequent generations

Australian researchers have revealed for the first time that males infected with the Toxoplasma parasite can impact their offspring's brain health and behavior.

28 Apr 2020

Novel protein facilitates a critical event in mammalian fertilization

Fertilization is a fundamental process in sexual reproduction when the combination of male and female gametes blends genetic material to create a new unique individual. Now, researchers from Japan have identified a new factor that may help orchestrate this vitally complex life event.

From Osaka University 17 Apr 2020

Progesterone induces sperm release from oviductal epithelial cells by modifying sperm proteomics

An international team of researchers has uncovered valuable insights on the underlying mechanisms involved in the process of sperm release from the oviduct.

10 Feb 2020