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.

Women who underwent uterine transplantation adjust to sudden restoration of fertility

In October last year the Gothenburg, Sweden, group of Mats Bra?nnstro?m announced the world's first live birth following the transplantation of a donated uterus.

17 Jun 2015

Study on how maternal proteins help regulate initial cell divisions during early development

Researchers in the University of Georgia's Regenerative Bioscience Center are visually capturing the first process of chromosome alignment and separation at the beginning of mouse development. The findings could lead to answers to questions concerning the mechanisms leading to birth defects and chromosome instability in cancer cells.

10 Jun 2015

Study finds increased rates of autism among the children of teen moms

The largest-ever multinational study of parental age and autism risk, funded by Autism Speaks, found increased autism rates among the children of teen moms and among children whose parents have relatively large gaps between their ages. The study also confirmed that older parents are at higher risk of having children with autism. The analysis included more than 5.7 million children in five countries.

10 Jun 2015

Electroporation technique brings higher efficiency, higher throughput genome engineering in animal models

Jackson Laboratory researchers have shown that using an electric current to deliver the CRISPR/Cas9 system, in order to engineer genetic changes in laboratory mice, is highly efficient and significantly improves the system's throughput.

9 Jun 2015

Researchers reveal that 6.5% of de novo genetic mutations occur during embryonic development

Until now, de novo genetic mutations, alterations in a gene found for the first time in one family member, were believed to be mainly the result of new mutations in the sperm or eggs (germline) of one of the parents and passed on to their child.

7 Jun 2015

UC Santa Cruz-led study offers new insights into molecular mechanisms of biological clock

A new study led by UC Santa Cruz researchers has found that a protein associated with cancer cells is a powerful suppressor of the biological clock that drives the daily ("circadian") rhythms of cells throughout the body.

3 Jun 2015

Norwegian Biotechnology Council recommends that egg donation be made legal in Norway

More than 5 million children in Europe have been born as a result of assisted reproductive technologies, yet many European countries, including Norway, have regulations that restrict different aspects of these technologies.

1 Jun 2015

New imaging technique may improve testicular sperm extraction, reduce trauma during surgery

In the middle of Europe nearly every sixth couple in the reproductive age is involuntarily childless, in 50% due to male infertility. In about 10% of all infertile men azoospermia is diagnosed, i.e. no spermatozoa are found in the ejaculate.

30 May 2015

Investigating epigenetic marks in ancient DNA could help understand health of ancient populations

A new study by anthropologists from The University of Texas at Austin shows for the first time that epigenetic marks on DNA can be detected in a large number of ancient human remains, which may lead to further understanding about the effects of famine and disease in the ancient world.

29 May 2015

$Study analyses advantages of using fractions of ejaculate in IVF$

Study analyses advantages of using fractions of ejaculate in IVF

Sperm in the first fraction of ejaculate are more numerous, move more and present better quality DNA than those lagging behind. This is the conclusion of a study led by the Ginemed fertility clinic, which confirms that while the objective of the first fraction is to fertilise the egg, the second phase is so that no sperm from any other male has a chance to fertilise it.

27 May 2015

Linkam launch the WS37 Warm Stage for life cell research - applications in andrology

At the 2015 and 10th anniversary annual meeting of the Association of Biomedical Andrologists, Linkam have introduced a new solution for embryologists seeking a better solution for the evaluation and quantification of sperm...

21 May 2015

Leeds scientists examine benefits of hyaluronic acid in helping improve IVF success rates

Scientists from the University of Leeds are investigating whether a molecule usually found in moisturisers and skin creams could improve IVF success rates in the UK.

20 May 2015

Linkam and Cambridge IVF work on the development of new protocols for sperm testing

IVF is becoming increasingly important as fertility and birth rates fall in developed countries. Ensuring patients get the right treatment is important both from an emotional and financial perspective...

From Linkam Scientific Instruments 18 May 2015

Study finds similarity in clinical progression between human patients and Huntington's disease monkeys

Transgenic Huntington's disease monkeys show similarity to humans with Huntington's in their progressive neurodegeneration and decline of motor control, scientists from Yerkes National Primate Research Center, Emory University, report.

14 May 2015

Researchers develop new IVF technique to improve fertility treatment

For couples struggling to conceive the old-fashioned way, in vitro fertilization (IVF) provides an alternate route to starting a family. When eggs are mixed with sperm in test tubes, the fertilized eggs to grow into embryos that can be implanted inside the uterus of a woman who will carry them to term.

29 Apr 2015

Linkam stages used to study the effects of cryopreservation on the quality of Koala spermatozoa samples

Market leaders in temperature controlled microscopy, Linkam Scientific Instruments report on the use of their temperature controlled stages in the study of the effects of cryopreservation of Koala spermatozoa in Australia.

From Linkam Scientific Instruments 28 Apr 2015

ISSCR calls for moratorium on human germline genome editing attempts in clinical practice

In response to an article published by Chinese scientists describing research that used gene editing technologies in human embryos, the International Society for Stem Cell Research has again called for a moratorium on attempts at human clinical germline genome editing while extensive scientific analysis of the potential risks is conducted, along with broad public discussion of the societal and ethical implications.

27 Apr 2015

Johns Hopkins researchers link sperm with specific 'epigenetic tags' to autism

In a small study, Johns Hopkins researchers found that DNA from the sperm of men whose children had early signs of autism shows distinct patterns of regulatory tags that could contribute to the condition. A detailed report of their findings will be published online in the International Journal of Epidemiology on April 15.

15 Apr 2015

High levels of pesticide residues in fruits, vegetables can affect semen quality

Men who ate fruits and vegetables with higher levels of pesticide residues—such as strawberries, spinach, and peppers—had lower sperm count and a lower percentage of normal sperm than those who ate produce with lower residue levels, according to a new study by researchers at Harvard T.H. Chan School of Public Health.

1 Apr 2015

EHT expert paper raises important and unanswered questions about safety of wearable tech

Wearable technology is raising health concerns worldwide. A recent New York Times article by Nick Bilton is raising important and unanswered questions about the safety of wearable tech, according to the non-profit research group, Environmental Health Trust.

23 Mar 2015