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Latest Sperm Stories

2011-08-04 13:36:52

Research could lead to techniques to improve fertilization in humans In new research that could have implications for improving fertilization in humans and other mammals, life scientists studied interactions between individual sperm and eggs in red abalone, an ocean-dwelling snail, and made precise chemical measurements and physical models of these interactions. They are the first scientists to do so. By simulating the natural habitat of the abalone in the laboratory, the scientists were able...

2011-04-14 21:03:08

Egg cells failing to properly arrange chromosomes Washington State University researchers have confirmed a critical step in cell division that results in age-related miscarriages and birth defects, including Down syndrome. Writing in the upcoming issue of the journal "Current Biology," the researchers say they recreated the conditions in which an egg cell will continue to undergo cell division without properly arranging its chromosomes, creating offspring with aneuploidy, or an abnormal...

2011-03-17 21:00:03

A team of researchers at the Instituto Gulbenkian de Ciência (IGC), Portugal, discovered that pollen, the organ that contains the plant male gametes, communicate with the pistil, their female counterpart, using a mechanism commonly observed in the nervous system of animals. This study not only reveals a new mechanism which underlies reproduction in plants, but also opens an exciting new avenue in the study of how cell-cell communication is conserved between animals and...

2011-03-03 12:26:01

A new study published in the International Journal of Andrology reveals that semen quality has significantly deteriorated during the last ten years in Finland, a country that previously was a region with high sperm counts. At the same time, the incidence of testis cancer in the Finnish population showed a remarkable increase, following the worrying trends observed in several countries in Europe and the Americas. Led by Jorma Toppari, MD, PhD, of the University of Turku, researchers examined...

2011-02-02 14:50:50

Study uncovers genetic hierarchy in plant sperm formation Biologists at the University of Leicester have published results of a new study into the intricacies of sex in flowering plants. They have found that a gene in plants, called DUO1, acts as a master switch to ensure twin fertile sperm cells are made in each pollen grain. The research identifies for the first time that DUO1 switches on a battery of genes that together govern sperm cell production and their ability to produce seeds.. The...

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2010-10-28 09:30:00

Researchers have linked a chemical compound commonly used in the making of plastics to low-sperm counts and other reproductive issues among Chinese factory workers, according to a study published in the latest edition of the journal Fertility and Sterility. The study, which was funded by the National Institute of Occupational Safety and Health (NIOSH) and completed at the Kaiser Permanente Division of Research in Oakland, California, analyzed the urine levels of male workers in China. Those...

2010-10-26 00:01:43

Researchers have now found a way to propagate primary human Sertoli cells in the laboratory -- the first step, say investigators, to developing an artificial human testicle for reproductive research. Derived from the testis, it has been difficult to maintain Sertoli cells, the "nurse" cells responsible for overseeing sperm production, outside of the human body. San Francisco, CA (Vocus) October 25, 2010 After more than 30 years of unsuccessful efforts by numerous investigators,...

2010-10-22 01:38:48

Researchers at the Swedish medical university Karolinska Institutet have been able to describe the 3D structure of a complete egg receptor that binds sperm at the beginning of fertilization. The results, published in the journal Cell, will lead to better understanding of infertility and may enable entirely new types of contraceptives. For centuries, the imagination of people has been grasped by the encounter of gametes "“ egg and sperm-, whose union gives rise to a new individual. At...

2010-09-08 14:10:55

Two new studies have shed more light on how smoking may damage fertility, and give further weight to advice that mothers and fathers-to-be should stop smoking before attempting to conceive. The research is published online in Europe's leading reproductive medicine journal Human Reproduction today (Wednesday 8 September). In the first study [1], researchers found that a mother's smoking during early pregnancy dramatically reduces the numbers of germ cells (the cells that form eggs in females...

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2010-08-12 06:25:00

Obesity in younger men may lead to lower sperm count, a new study reported in the journal Fertility and Sterility suggests. The findings add to evidence that ties obesity to relatively poorer quality sperm. Several recent studies have found that compared with thinner males, obese men tend to have lower sperm counts, fewer rapidly mobile sperm and fewer progressively motile sperm, which refers to sperm that swim forward in straight lines rather than swimming about aimlessly. But age is also...


Word of the Day
toccata
  • In music, a work for a keyboard-instrument, like the pianoforte or organ, originally intended to utilize and display varieties of touch: but the term has been extended so as to include many irregular works, similar to the prelude, the fantasia, and the improvisation.
This word is Italian in origin, coming from the feminine past participle of 'toccare,' to touch.
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