Tag: "conception" at biology news

Yearling horse auction to benefit equine research

...rch relates the care and welfare of the horse from conception through its older years to its interaction as a grazing animal with the land. The research objectives are to develop pastures and pasture supplements that improve the reproductive efficiency of mares, optimize growth in the young horses, enhance athl...

Reassuring findings from first study on sperm donor identification

...e is to indicate that when youth are told of their conception origins early and have the option to learn more about their donor when they reach adulthood, they express a normal, healthy curiosity about the donor that reflects an interest in learning more about themselves. They are not looking for a father in th...

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

...ents said that they intended to disclose the donor conception to the child, suggesting a change in attitudes to openness in recent years." She said the findings will have practical implications for clinics in the provision of counselling before and after a child's birth, particularly for parents who were unsure...

From Mars to Maryland: 2005 AAAS Annual Meeting spotlights

...io of papers that completely reordered the human conception of the physical world. The storm of creative inspiration was so profound that 1905 is now widely known as Einstein's annus mirabilis-his miracle year. A century later, the world is commemorating Einstein's discoveries with the World Year of Physics. ...

Mother's prenatal and lactational diet may protect daughters from breast cancer

...ough food or supplements at any point in life from conception to at least puberty also could reduce the incidence rate for breast cancer in female offspring significantly. Conversely, mothers' consumption of omega-6 fats commonly found in Western diets could increase their daughters' risk of breast cancer. "D...

Scripps research scientists identify infertility molecule

...rty have in getting pregnant. Successful conception depends on a variety of factors. A man has to produce an adequate amount of healthy sperm, and a woman has to produce healthy eggs. The sperm has to be able to travel up the fallopian tubes to reach the egg, and once there, it must be able to fertili...

Mosquito study shows new, faster way West Nile can spread

...oes. The discovery calls into question the current conception of mosquito transmission of West Nile virus and possibly other viruses such as the one that causes dengue fever. According to that theory, many vertebrates were considered to be "dead-end hosts" that did not pass along the virus. Only birds, which de...

Human embryonic stem cells have the potential to develop into eggs and sperm in the laboratory

...ible to produce sperm and eggs for use in assisted conception treatments. This is a long way off and we would have to prove it was safe because, for example, the culture process may cause genetic changes. For some men and women this would be the only route for producing sperm and eggs. It would not be reproduct...

Recurrent miscarriages: Could prednisolone reduce the occurrence of this distressing condition?

...y would have to take the steroid for longer before conception occurred, probably for about three months. "This research has demonstrated that high numbers of uNK cells in the pre-implantation endometrium of women with RM can be reduced by administering prednisolone. However, we do not know the exact role played...

Unique genetic profile helps over-45s conceive naturally

...an ultra-religious sector which encourages natural conception and discourages contraceptive use. These women would in any event continue to challenge their reproductive system until menopause. But for other groups the ethical implications may be different and counselling on all the aspects of late motherhoo...

Folic acid link with low birth weight, shows pioneering study

... to take an additional 400 micrograms a day before conception and during the first 12 weeks of pregnancy. Dr Relton said: "Folic acid is highly important in preventing birth defects which affect a small number of pregnancies. This study suggests that it is also important in every pregnancy to help the develop...

NIH, UNC scientists find anti-cancer drugs might work in treating deadly aging disease

...ry old bald people or, some might say, Hollywood's conception of space aliens, is 12 years. Along with their staffs and students, Dr. Francis S. Collins, director of the National Human Genome Research Institute, has collaborated with Drs. Channing J. Der and Adrienne D. Cox of the UNC School of Medicine in labo...

Israeli scientists successfully transplant frozen-thawed ovaries in sheep

...ons on the transplant might interfere with natural conception so pregnancy may require IVF techniques, but we have been able to demonstrate long-term intact organ cryopreservation with restored function following thawing and transplantation, in a large animal for around 36 months post-transplantation," said Dr ...

Joslin study sheds light on birth defect cause in pregnant women with diabetes

...trol of blood glucose levels just before and after conception is critical. "Women with diabetes should be consulting with their healthcare team to be sure they have good glycemic control before becoming pregnant," says Dr. Loeken. Maintaining blood glucose control continues to be important throughout the pregna...

Preventing fetal exposure to popular acne drug

...revention program (PPP) in 1988 to try and prevent conception in women taking the drug. This program was replaced in the U.S. in 2002 with the System to Manage Accutane Related Teratogenicity (SMART), a program that placed more emphasis on pregnancy testing and contraception. A study published online October 14...

Social learning in noncolonial insects?

...oolen and colleagues therefore question the common conception that social learning is restricted to large-brained animals assumed to possess superior cognitive abilities....

Unexpected finding: Some dinosaurs grew slower in hard times

...nder says. 'However, our findings have thrown this conception into disarray, at least for one dinosaur.' The Swabian lindworm The dinosaur involved is plateosaurus engelhardti, the most important 'German' dinosaur, to judge from the number of fossil finds. The 'Swabian lindworm' (the finds are mainly located ...

Loosen leash on cancer protein 'watchdog,' researchers say

... therapy. "These mice were genetically modified at conception to produce higher p53 levels, which is quite a different treatment than just giving normal mice a pill," Mendrysa said. "Also, mice in our study are not subject to the same stresses as, for example, a person working on Wall Street. It remains to be s...

Obese women suffer more pregnancy complications

...eight reduction efforts should be made well before conception is attempted, and dieters should avoid pregnancy. "Adequate nutrition is important for pregnant women and women planning pregnancy," the paper says. The committee recommends that clinicians counsel pregnant women about appropriate caloric intake and ...

Oxford biologists explore ability for some females to conceive during pregnancy

...their reproductive success. The authors argue that conception during pregnancy, known as superfetation, benefits female reproductive fitness by reducing the risk of infanticide, extending the female's window of opportunity for conception, and increasing the genetic diversity of the litter. "Natural selection a...

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(Date:5/17/2013)... noise of the South, but the night belongs to the ... heavy from the humidity and the sounds of wildlife. ... frogs, toads and salamanders, is the center of amphibian biodiversity ... the auditorium for their symphonic choruses, the scientists of the ... have front-row seats. , Amphibians, which rely on ...
(Date:5/17/2013)... China---- Why Tibetan antelope can live at elevations ... collaborative research published in Nature Communications , ... provide evidence that some genetic factors may be ... environments. The data in this work will also ... the biology of other ruminant species. , The ...
(Date:5/17/2013)... international team of scientists using a new X-ray method ... living frog embryo in greater detail than ever before., ... research and the search for new treatments for genetic ... fr Technologie in Germany, in collaboration with the Advanced ... National Laboratory, released the most precise depiction ever of ...
Breaking Biology News(10 mins):Front-row seats to climate change 2Front-row seats to climate change 3Front-row seats to climate change 4The genome sequence of Tibetan antelope sheds new light on high-altitude adaptation 2New X-ray method shows how frog embryos could help thwart disease 2
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