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Latest Germ cells Stories

2012-07-30 06:27:33

(Ivanhoe Newswire) — Is your biological clock about to run out? While women have always thought they are born with all of the eggs they need, new research says, that´s not true! A compelling new genetic study tracing the origins of immature egg cells, or 'oocytes', from the embryonic period throughout adulthood adds new information to a growing controversy. The notion of a "biological clock" in women arises from the fact that oocytes progressively decline in number as females...

2012-07-27 12:24:01

A compelling new genetic study tracing the origins of immature egg cells, or 'oocytes', from the embryonic period throughout adulthood adds new information to a growing controversy A compelling new genetic study tracing the origins of immature egg cells, or 'oocytes', from the embryonic period throughout adulthood adds new information to a growing controversy. The notion of a "biological clock" in women arises from the fact that oocytes progressively decline in number as females get older,...

First Genetic Sequence Of Individual Human Sperm
2012-07-20 07:58:23

Connie K. Ho for redOrbit.com — Your Universe Online Sperm cells can look the same with a similar tadpole appearance. However, the cells showcase differences among the genes. Recently, researchers were able to capture an image of the varieties among genes which they say is particularly helpful in understanding the genome and male fertility. The research is featured in the July 20 edition of Cell, a Cell Press journal. The scientists believe that the methods used could help...

2012-05-25 05:33:08

(Ivanhoe Newswire) - A new type of male contraceptive could be created thanks to the discovery of a key gene essential for sperm development. This could lead to alternatives to the conventional male contraceptives which rely on the production of hormones, such as testerone. Research led by the University of Edinburgh, shows how the gene Katnal1 is critical to enable sperm maturity in the testes. If scientists can regulate Katnal1 in the testes, they could prevent sperm completely maturing,...

Sperm Crawl And Collide On Way To Egg
2012-05-07 14:12:38

Scientists at the Universities of Birmingham and Warwick have shed new light on how sperm navigate the female reproductive tract, 'crawling' along the channel walls and swimming around corners; with frequent collisions. Research results published today (Tuesday May 8, 2012) in the Proceedings of the National Academy of Sciences of the United States (PNAS) provide fresh insight into how sperm might find their way to the egg that will help to inform future innovation in the struggle to treat...

2012-04-30 14:13:53

Gene Is Involved in Fanconi Anemia — Thale Cress as Model Organism Scientists of KIT and the University of Birmingham have identified relevant new functions of a gene that plays a crucial role in Fanconi anemia, a life-threatening disease. The FANCM gene is known to be important for the stability of the genome. Now, the researchers found that FANCM also plays a key role in the recombination of genetic information during inheritance. For their studies, the scientists used thale cress...

2012-04-03 10:02:30

A study in The Journal of Cell Biology describes how a secreted enzyme helps egg cells avoid being fertilized by more than one sperm. Because polyspermy disrupts embryonic development, oocytes take several steps to ensure they only fuse with a single sperm. One key step is to prevent additional sperm from binding to the surface of an already-fertilized egg, a blockade that involves the release of secretory granules and cleavage of a protein called ZP2, a component of the zona pellucida...

2012-03-09 00:12:00

Stem cells provide a recurring topic among the scientific presentations at the Genetics Society of America's 53rd Annual Drosophila Research Conference, March 7-11 at the Sheraton Chicago Hotel & Towers. Specifically, researchers are trying to determine how, within organs, cells specialize while stem cells maintain tissues and enable them to repair damage and respond to stress or aging. Four talks, one on Thursday morning and three on Sunday morning, present variations on this theme....

2012-03-08 00:54:06

The speed at which the calcium concentration in the cell changes controls the swimming behavior of sperm. They can calculate the calcium dynamics and react accordingly. Sperm have only one aim: to find the egg. The egg supports sperm in their quest by emitting attractants that induce changes in the calcium level inside sperm. Calcium ions determine the beating pattern of the sperm tail which enables sperm to steer. Together with colleagues from the Max Planck Institute for the Physics of...

2012-02-29 14:09:28

It had long been assumed that the human sperm cell´s mission in life ended once it had transferred its freight of parental DNA to the egg. More recently however, other components of sperm have been implicated in fertilization, and perhaps even in subsequent embryonic development. In a new study appearing in the Proceedings of the Royal Society, Timothy Karr, a researcher at Arizona State University´s Biodesign Institute, along with colleagues from the Universities of Cambridge...


Word of the Day
bodacious
  • Remarkable; prodigious.
  • Audacious; gutsy.
  • Completely; extremely.
  • Audaciously; boldly.
  • Impressively great in size; enormous; extraordinary.
This word is probably from the dialectal 'boldacious,' a blend of 'bold' and 'audacious.'
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