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.

Selective destruction of prostate tumor as effective as complete prostate removal

Researchers from The University of Texas Medical Branch at Galveston, led by prostate cancer treatment pioneer Dr. Eric Walser, have shown that selectively destroying cancerous prostate tissue is as effective as complete prostate removal or radiation therapy while preserving more sexual and urinary function than the other treatments.

21 Mar 2019

Gene editing and designer babies experiments face global moratorium

Powerful gene editing tools could soon face a global regulations on their use on human embryos, sperms or eggs.

20 Mar 2019

Researchers track effects of epigenetic marks carried by sperm chromosomes

As an organism grows and responds to its environment, genes in its cells are constantly turning on and off, with different patterns of gene expression in different cells. But can changes in gene expression be passed on from parents to their children and subsequent generations?

20 Mar 2019

World's oldest semen viable for artificial insemination

Semen stored since 1968 in a laboratory in Sydney has been defrosted and successfully used to impregnate 34 Merino ewes, with the resulting live birth rate as high sperm frozen for just 12 months.

18 Mar 2019

Call for halt to human gene editing and designer babies experiments

Powerful gene editing tools could soon face a global regulations on their use on human embryos, sperms or eggs.

18 Mar 2019

New research opens possibility of using sperm taken from testicles to overcome infertility

Scientists have found that sperm DNA from the testicles of many infertile men is as good as that of ejaculated sperm of fertile men. This may explain a major cause of male infertility and opens the possibility of using sperm taken directly from the testicles of these men; to overcome their infertility

15 Mar 2019

Chemicals at home responsible for decreased fertility in men and dogs

A new study has found that chemical and environmental contaminants at home and diet could be responsible for decreasing fertility of the men and the domestic pet dogs living in the house. The results of the new study were published in the latest issue of the journal Scientific Reports.

4 Mar 2019

Environmental contaminants in the home have adverse effects on male fertility in humans, dogs

New research by scientists at the University of Nottingham suggests that environmental contaminants found in the home and diet have the same adverse effects on male fertility in both humans and in domestic dogs.

4 Mar 2019

Second-ever case of semi-identical (sesquizygotic) twins

Doctors report on a woman who gave birth to semi-identical twins in 2014. This is the second time this is known to have occurred after the first case in 2007.

28 Feb 2019

New research highlights widespread fertility concerns among British men

Almost half (42%) of British men are concerned about their fertility according to new research by ExSeed, an emerging pioneer in the male fertility space which enables men to test their sperm quality at home.

26 Feb 2019

A single round of chemotherapy has no effect on sperm count, say researchers

Men with early-stage testicular can safely undergo one round of post-operative chemotherapy or radiotherapy without a long-term negative effect on sperm count.

25 Feb 2019

Sperm quality not affected by one course of postoperative treatment for early testicular cancer

Men with early stage testicular cancer can safely receive one course of chemotherapy or radiotherapy after surgery without it having a long-term effect on their sperm count, according to a study published in the leading cancer journal Annals of Oncology today (Monday).

25 Feb 2019

Trump plan to beat HIV hits rough road in rural America

One of the goals President Donald Trump announced in his State of the Union address was to stop the spread of HIV in the U.S. within 10 years.

21 Feb 2019

Researchers unlock the secret behind reproduction of fish called ‘Mary’

A female stickleback fish, nick-named 'Mary', has produced offspring from eggs that appear to have been fertilized while they were still inside her, according to scientists at the University of Nottingham.

20 Feb 2019

Study shows how 3D organization of genetic material helps perpetuate the species

From fathers to children, the delivery of hereditary information requires the careful packing of DNA in sperm. But just how nature packages this DNA to prepare offspring isn't clear.

19 Feb 2019

New mechanism for lateral inhibition of cells discovered

"The winner takes it all, the loser standing small" - that's not just true in the famous ABBA song, but also in animal development. Frequently, a group of cells starts out all being the same. But then one cell puts the brake on its neighbors, sending inhibitory signals that stop their differentiation. The "winning" cell, in the end, is different from its neighbors.

15 Feb 2019