Diatom genome reveals key role in biosphere's carbon cycle
...the single-celled organisms generate as much as 40 percent of the 50 billion to 55 billion tons of organic carbon produced each year in the sea and in the process use carbon dioxide and produce oxygen. And they are an important food source for many other marine organisms. Scientists would like to better un...Commandeering cellular machinery: recognition mechanism to detect small molecules
...335. A small number of yeast cells (less than 0.1 percent of the total) grew into visible colonies, suggesting they might contain nuclear receptors for the LG335. To verify that the colonies were growing in response to LG335 and not some other compound contained in the yeast, samples were then smeared onto ...Amgen investigational therapy, AMG 162, increased bone mineral density with twice yearly injection
...he lower spine by 4 to 7 percent, similar to the 5 percent increase in the FOSAMAX® group, after 12 month...f the treatment groups was dyspepsia (4 percent, 5 percent and 20 percent in the placebo, AMG 162 and the open label FOSAMAX® groups, respectively). The c...Fungus knocks a frog down but not out, raising questions about amphibian declines
...t survived in remnant colonies totaling about five percent of the original population. The decline was not directly observed, but the remaining populations were studied in the mid-1990's and appeared to have stabilized. Frog toes taken to identify and study individual frogs were later found to show evidence ...HHMI researchers Richard Axel and Linda Buck win 2004 Nobel Prize
..."That's really a lot of genes," Axel said. "It's 1 percent of the genome! This means that, at least in the rat, 1 out of every 100 genes is likely to be engaged in the detection of odors." This staggering number of genes reflects the crucial importance of smell to animals....Annals of Internal Medicine tip sheet for Oct. 5, 2004
... the men who ate the most unsaturated fats were 18 percent less likely to develop gallstones than the men who ate the least unsaturated fat (Article, p.514). Unsaturated fats include both monounsaturated fatty acids and polyunsaturated fatty acids. Monounsaturated fats are found in olive, peanut and ca...September/October 2004 Annals of Family Medicine tip sheet
...ients who have not finished high school have a 2.4 percent higher risk of dying of coronary heart disease (CH...nd that prescription drug coverage costs rose 22.8 percent annually during the study period, from $503 per person per year in 1998 to $759 in 2000. The average...Low dose radiation evades cancer cells' protective 'radar'
...h doses are 1,000 times stronger. Approximately 35 percent of colon cancer cells survived low-dose radiation as compared to 60 percent receiving high-dose. In prostate cancer cell lines, half of the cells survived low-dose radiation, w...Viruses found in untreated city water
...at least one type of gastrointestinal virus and 23 percent of the samples contained two or more virus types.The study found enteroviruses, rotavirus, hepatitis A virus and noroviruses. Besides noting the presence of these viruses with molecular testing methods, researchers attempted to culture the enteroviru...Researchers find chemosignal that encourages women's sexual desire
...nths, women with regular partners experienced a 24 percent increase in sexual desire as reported on a standar...l survey. Women without partners experienced a 17 percent increase in sexual fantasies after exposure for the period. Women in the control group with partn...Obese women with early-stage breast cancer more likely to die than women of normal weight
...ear rates for overall survival were 92 percent, 92 percent and 88 percent for the normal-weight, overweight and obese groups, respectively. Five-year rates of distant metast...ASPB opposes ban of GE crops in Butte County Ballot Measure D
...ing countries. The report noted that more than 70 percent of the world's poor still live in rural areas and depend on agriculture for their survival. Agricultural research - including biotechnology - holds an important key to meeting their needs, the FAO said. The FAO added that biotechnology can speed up ...Toward a better understanding of taste and smell impairments
...population where this condition is common. Over 90 percent of all head and neck cancer patients who receive radiation therapy experience substantial taste loss and alterations of flavor perception. Yet relatively little is known about the impact of radiotherapy on taste perception. Under the direction of se...New risks for bladder cancer identified by MIT team
...use of bladder cancer, contributing to at least 50 percent of the approximately 60,000 cases in the United States every year. All three of the new carcinogens, however, were also found to be risk factors for bladder cancer in nonsmokers. Although second-hand smoke is one source of exposure for non-smokers, ...Embryonic stem cells correct congenital heart defect in mouse embryos
...on," added Dr. Benezra. "A reduction of just 15-20 percent of the Id protein impairs the stem cells' ability to rescue these embryonic mouse heart cells. These cells are very powerful, but also apparently very delicate." To understand the molecular basis of the rescue, the authors identified two important mo...Why do African-American women have more pregnancy problems?
...recent years, it still lags behind white women: 75 percent of black women seek prenatal care vs. 89 percent of white women. The discrepancy continues after the baby is born too: 58 percent of white infants ge...Support groups aid women with 'breast cancer gene mutations'
...o carry BRCA1 and 2 gene mutations have up to a 90 percent lifetime risk of breast or ovarian cancers. As a result, they must address difficult issues that can lead to depression and anxiety, including the perception of personal vulnerability to cancer, and communicating the inheritable vulnerability and its...Rutgers-led research offers new clues in the genetic mysteries of maize
...es today, the researchers found that as much as 22 percent of the maize genes could be identified as being di...as chimpanzees and humans differ in less than one percent of their genes. "It looks like significant evolutionary change happened in a relatively short time...Estrogen protects male rats from aortic aneurysms
... from a ruptured abdominal aortic aneurysm. Eighty percent of these aneurysms, which doctors call AAAs for sh...urysm in the aortic wall. Fourteen days later, 82 percent of the male rats, but only 29 percent of the female rats, showed evidence of AAA formation. Macropha......duced the accumulation of amyloid plaque by 88%99% percent and reduced the storage form of cholesterol by 86%.When the researchers tested the treated versus untreated animals, they found a slight improvement in the animals' ability to learn and remember the location of a submerged platform in a water tank--a...