Tag: "fertility" at biology news

Talented sniffer: A receptor known for guiding sperm to egg plays a role in the nose

... tests" could be employed as a diagnostic tool for fertility defects associated with olfactory receptor-dependent chemotaxis in sperm. ...

Growth factors confer immortality to sperm-generating stem cells

...lopment will have profound consequences for future fertility therapies and provide a source of stem cells that ...genes. For medicine, it opens up a new chapter in fertility medicine." Spermatagonial stem cells and the hematopoietic stem cells that generate new blood cells...

Study in Royal Society journal on possible genetic factors in social responsiblity

...nces in the genetic load affecting male and female fertility in a butterfly by Dr IJ Saccheri, Dr HD Lloyd, Dr ...erility effect is restricted to males, with female fertility being unaffected by inbreeding, suggesting that spermatogenesis is more sensitive to deleterious mut...

US researchers warn of possible fertility risk to men using laptop computers on their laps

US fertility experts (Thursday 9 December) warned teenage boys and young men to consider limiting the time that they use laptop computers positioned on their laps, as long-term use may affect their fertility. The increasing popularity of laptop computers (L...

Dwarf mistletoe reveals its sexual secrets

...se its better-known Christmas cousins as the green fertility symbol of choice for holiday party goers. In fact,...toe's association with sacred winter celebrations, fertility and kissing is an ancient one, extending back into pre-Christian Europe. The European mistletoe para...

Ocean colour satellites guide research ship through South Pacific's watery desert

... Marquises Archipelago, the precise reason for its fertility still uncertain. And just off the west coast of Chile is an upwelling of cold, nutrient-high water that supports extremely dense chlorophyll concentrations and one of the most important fisheries on Earth. S...

Development of portable infectious disease detector

...em and used it as the basis for a inexpensive male fertility detector that can be used in the home to measure s...e point-of-care diagnostics market. For their home fertility tester, Pria kept costs down by keeping their system as simple as possible. Instead of trying to squ...

Research may speed development of new oral drugs for fertility treatments

...ing hormone (FSH), one of the most frequently used fertility drugs, works, and with it new ideas for creating a...structure could aid in the development of improved fertility drugs or contraceptives for both men and women. Hendrickson and Fan, who are both at Columbia Univer...

Parents' attitudes to sperm donation still some concerns about being open

...r off financially, the men dealt better with their fertility problems and secrecy towards the child was not an option. About half had previously considered adoption or a known donor. "The associations between donor choices, education level and infertility distress were intriguing," said Dr Brewaeys. "We belie...

Scientists find male finches frugal in their attempts to attract females

...eeding period was over, we determined the relative fertility of females by measuring when each began feather molt." Because molt begins when fertility ends, the scientists could infer when each female had been at the peak of her fertility during the e...

Animal parenting, personality and pair-ups

...ogy. The exact phenomenon of social suppression of fertility doesn't map onto humans but can help us understand how human fertility can be influenced by social and psychological factors," she said. Curiously, reproductive suppressio...

First step towards a non-invasive screening test for early signs of testicular cancer

...reening test, it could be offered in andrology and fertility clinics to young men at risk of testicular cancer ...or chemotherapy. With this more gentle treatment, fertility is usually unaffected."...

Biologist's findings on fertility and status in monkeys generate scientific, media interest

...quiries into the role social position plays in the fertility of female marmosets were the recent subject of a p...ctioning. Among primates, the social regulation of fertility is especially pronounced in the marmosets and tamarins, New World monkeys in which socially subordin...

New factor affects fertility

...to produce and maintain levels of sperm needed for fertility in mice, according to research done by investigato... growth just after birth, events occur that impact fertility in the adult," said Richards. "The proliferation of germ cells is essential for fertility." She sai...

Mice with defective sperm offer clues to infertility in men

...and thus would be a good target for both improving fertility and quality of sperm for men who are infertile, and for the inhibition of fertility using a male contraceptive pill." Led by first author Holger Kissel, Ph.D., a postdoctoral researche...

AAAS CEO Alan I. Leshner welcomes proposed Washington state legislation on stem cell research

... stem cell lines derived from embryos discarded by fertility clinics. [For more information, read the full letter . ]...

Lance Armstrong Foundation supports UHC research

..., the psychological late effects of cancer and the fertility of women following chemotherapy for early breast cancer. "We are thrilled to be partnering with top-notch institutions and researchers in the early stages of their careers like Dr. von Gruenigen," said Suzanne Kho, associate director of research f...

Why is Scotland's population shrinking and ageing? - A new research initiative

...e key aspects of Scotland's demography: migration, fertility and the impact of an ageing population. Scotland's...sional figures for 2004 show 53,957), the Scottish fertility rate is still at a historically low level. It is still too early to tell whether this recent increa...

National Academies news: Stem cell guidelines released

...not influence decisions about creating embryos for fertility treatment. The guidelines also emphasize that no ...ch without consent, and researchers should not ask fertility doctors to create more embryos than necessary for reproductive treatments. According to the guidelin...

Scripps research scientists identify infertility molecule

...ain type of molecule known as an LPA receptor have fertility problems, which suggests that these receptors play...ar on the surface of cells in a mouse's womb, have fertility problems. These mice are able to produce eggs normally, so that the eggs can be fertilized, but the ...

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(Date:10/17/2014)... Copenhagen have shown for the first time how bacteria ... patients, giving them the opportunity to get tremendous insights ... The study also discovered the bacterial growth in chronic ... or slowed down by the immune cells. The researchers ... helped "suffocate" the bacteria, forcing the bacteria to switch ...
(Date:10/16/2014)... on the human body. Battles are won, lost ... cancer, this stalemate—known as tumor dormancy—can last up ... phenomena that is poorly understood. , A ... Salvatore Torquato, a Professor of Chemistry at Princeton ... dormancy and the switch to a malignant state. ...
(Date:10/16/2014)... new synthesis of recent research findings to inform their ... two states. , The Ecology and Management of ... Synthesis of the Relevant Biophysical Science and Implications for ... the U.S. Forest Service,s Pacific Northwest Research Station, is ... a synthesis of the large body of scientific information ...
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