Childhood sleep-disordered breathing severity related to tonsil size, oropharyngeal volume
...ompared with the low-OAHI group; (5) a significant correlation between the OAHI and the oropharyngeal volume was ...with low-OAHI values. There was also a significant correlation between this variable and the OAHI. With respect to the airway CSA-length relation, researchers f...Brain study shows some animals crave exercise
...ice that typically ran longer distances, showing a correlation between brain activity levels and average amount of wheel running. "In the high-running mice, certain brain regions displayed extremely high levels of activity, more than normal," says Rhodes. "These were the same brain regions that become activated...OHSU researchers reveal relationship between weight gain and female hormones
...e time of day that the animals were feeding had no correlation whatsoever." Another issue highlighted by the study involved changes in metabolism. The scientists noted a relationship between the loss of ovaries and changes in metabolism, which may also be related to menopause. Cameron and her colleagues plan to ...Plants' circadian clocks tune into latitude to enhance fitness
...each of the latitudes for the plants, we found the correlation was highly significant between the circadian variations in period length and the latitudes of origin of the different plants," says McClung. A second component of the study provides evidence suggesting that a large number of genes contribute to fine-...Unfaithful songbirds increase offspring fitness
... a quality signal during mate choice. The positive correlation between UV-reflection and individual heterozygosity supports this view. "The study in the Austrian blue tit population showed convincingly that females increase the heterozygosity of their progeny through extra-pair matings with distantly breeding ma...From genome comparisons, UCSD researchers learn lessons about evolution and cancer
...illions of years of human evolution, we may find a correlation between these phenomena -- and possibly provide biologists with new tools to study such conditions as breast cancer at the genetic level." As soon as reconstructions of other tumor genomes are completed, Pevzner and his colleagues will investigate wh...New way of examining lymph tissue detects hidden melanoma
...or nearly five years to determine if there was any correlation between the number or type of melanoma markers and patients' clinical outcomes. They found that patients with two or more of the markers were more than twice as likely to develop a recurrence of their disease than patients whose lymph node samples pr...PET scans used to determine progression of HIV infection
...and pelvic areas. The researchers observed a tight correlation between the viral replication and the lymph node activity on the PET signal. Lead author Sujatha Iyengar, PhD, and David Schwartz, MD, PhD, senior investigator of the study, propose that PET scans could be used to locate the specific nodes where HIV ...New study shows why hypertension affects black males disproportionately
...ion of the sequence technique shown to have a high correlation to invasive methods. After these assessments were completed, maximum oxygen consumption ( O2 max) capacity tests were performed and classic criteria were used to determine whether a maximal effort had been achieved. Independent t-tests were performe...Nasal contribution to breathing with exercise: The effect of race and gender
...he Caucasians. Rnose tended toward a negative correlation with MIFnose. AT 20% and 60% PWCmax, Caucasians had significantly less nasal contribution to breathing than African-Americans. There was a tendency toward a racial difference at 40% PWCmax. Women had a significantly less PWCmax, com...And the beat goes on: New insight into the genetics of congenital heart disease
...n to different levels." Dr. Jaio observed a direct correlation between the level of Bmp4 activity and the ability of the septum to correctly partition the upper and lower heart chambers what the researchers call "atrioventricular septation": the less Bmp4 present in cardiomyocytes, the more severe the septation...Some forms of cancer behave in an unexpected way
...ulkes. "For these tumors there is only a very weak correlation between tumor size, the local spread of cancer cel...rs did not behave as expected - there was no clear correlation between tumor size and associated cancer in the axillary lymph nodes. This was not true for breast c...Asthma patients cautioned about melatonin
...and increased 1.5 percent in healthy controls. The correlation between overnight change in FEV1 and melatonin levels showed a strong 0.79 correlation in patients with nocturnal asthma. There was a slight, but not statistically significant, correlatio...Schizophrenia and bipolar disorder could have similar genetic causes
... showed a high degree of overlap. There was strong correlation with results obtained with microarray analysis com...owed corresponding alterations. The high degree of correlation between the expression changes in schizophrenia and bipolar disorder provide compelling evidence for...Toxic protein could explain Alzheimer's and lead to breakthroughs
... The existence of ADDLs may help explain the poor correlation between plaques and neurological deficits. Studies by other researchers have shown a reversal of memory failure in mouse models treated with amyloid beta antibodies -- but without any reduction in plaque. The antibodies appear to restore memory becau...Researchers find a pattern in evolution of lizard groups
...two aspects of evolutionary diversification. "This correlation was a big surprise," said Losos. "The general worldview is that the history of each lineage is unique and due to varying circumstances so that no general pattern exists. Our findings tend to dispute that." The results were published in the August 15...Measles on the rise as vaccinations fall in the UK, Science study reports
... going that way," said Jansen. "We are reporting a correlation between the drop in vaccinations and the increasing size of measles outbreaks. Of course the coincidence is suggestive of a causative connection, but we can not draw this conclusion from our data," Jansen explained. However, they do conclude that the...Enhanced nutrition could result from rice research leading to high-protein flour
...sed significantly with incubation time. There is a correlation between APU activities and the starch-to-sugars conversion rates. The more APU present in seeds, the faster the rate of starch hydrolysis to sugars. Yu and colleagues generated novel APU-transgenic rice seeds. The unique feature of heat-activated ra...NYU scientists develop more accurate mathematical method to analyze genetic data
...eplaces this method with a mathematically rigorous correlation coefficient of two gene expression vectors, based on James-Stein shrinkage estimators. Its research shows that the new algorithm corrects for many kinds of errors. Given that close to 29,000 of the 30,000 genes found in the human genome have yet t...New research challenges prevailing theory of microbial biodiversity
...shows that genetic differences increased in direct correlation with geographic distance. "If this type of geographic pattern occurs in other microbes, it means the microbial world is even more diverse than we had previously predicted, which is astounding," said Whitaker. Taylor said the study has implications f...