Tag: "levels" at biology news
Genetic mutations linked to the practice of burning coal in homes in China
...than 20 times that country's national average. The levels
of polycyclic aromatic hydrocarbons generated duri...cooking with smoky coal are comparable to exposure levels
experienced by coke oven workers. Co-authors of the study include Qing Lan, Ph.D., division of canc...
Houston minority graduation rises in sciences, engineering as result of UH-led alliance
...any students with similar majors and minors at all levels
from freshmen to seniors find safe haven to seek assistance from others in the H-LSAMP program or take advantage of quiet rooms to concentrate. Workshop instructors also are on hand and eager to help. There are many success stories that ha...
Rare childhood genetic syndrome identified
...ignaling molecules, and normally, cellular calcium levels
are tightly regulated. Dr. Mark Keating, senior author of the study and a Howard Hughes Medical Institute investigator at Children's Hospital Boston, likens the calcium channel to a screen door. "After you go through the screen door, it automatical...
'Dead zone' area shrinking, Texas A&M prof says
...the area where just three weeks before, the oxygen levels
were recorded as being extremely low. The dead zone has been studied and tracked since it was discovered 20 years ago, DiMarco says. "We need to do some further research to determine the specific mechanisms under which hypoxia is created, maintained,...
Researchers find color sensitive atomic switch in bacteria
...e, describe the versatile light-sensing protein at levels
of resolution smaller than a nanometer--one billionth of a meter. "High-resolution X-ray crystallography revealed the light-absorbing part of the protein was present in two alternative positions, suggesting to us that light of different colors driv...
AAAS US Presidential Candidates' Forum
...hat global warming is already happening and rising levels
of global warming pollution are making the problem worse." He proposed that the solution lies in negotiating with and working with other nations. Although Bush's article in Science noted "key uncertainties remain concerning the underlying causes and ...
Safety of isoflavones in dietary supplements targeted by Illinois initiative
...uman nutrition, whose research has shown that high levels
of the isoflavone genistein promote the growth of cancerous cells in animal models representative of postmenopausal women with estrogen-dependent breast cancer. "Under the grant, three groups will conduct preclinical investigations on animal mode...
Phase II trials of second-generation antisense cancer drug planned following successful early study
...her the dose of OGX-011 given, the lower clusterin levels
were within the cancer cells. At the highest dose given of 640mg the clusterin messenger RNA (mRNA) was down to a mean 8% level as compared to historical controls. The drug was well tolerated by patients. Said Dr. Chi: "We designed the Phase I trial ...
Genetic differences might help distinguish thyroid cancers
...ed microarray analysis, which reveals the activity levels
of tens of thousands of genes at one time, to compare gene activity in cells from six PTC tumors, nine FTC tumors and 13 samples of normal thyroid tissue. The PTC cells showed over-expression of genes known as CITED1, claudin-10 (CLDN10), and i...
Researchers identify protein promoting vascular tumor growth
...n MCP-1 neutralizing antibody in mice when varying levels
of macrophages were present. "Our observati...earch. The trick will be regulating MCP-1 levels
safely, because the protein also is called to action to help wounds heal. Macrophages recruited in t...
Winning combination to build bone density in children
... They observed that the synergistic effect of high levels
of calcium intake and vigorous (as opposed to mode...k. We are talking about raising the resting energy levels
by about 6-8 times. The idea is to 'accumulate' this sort of energy expenditure over the day to tot...
Study: Emission of smog ingredients from trees is increasing rapidly
...th the rest." The study may help explain why ozone levels
have not improved in some parts of the country as ...sed sources may have been worthwhile even if ozone levels
did not decrease. "Even keeping the air quality the same might have been an achievement because if w...
Gene clusters predict atherosclerosis severity, susceptibility
.... While factors such as diet, smoking, cholesterol levels
and inactivity are important in the development of atherosclerosis, the researchers said that heredity plays a crucial role in how the body responds to these environmental factors. "Instead of trying to find a specific gene that might be implicate...
Veterans with Gulf War syndrome have damage in specific, primitive portion of nervous system
...g from Gulf War syndrome also were born with lower levels
of a protective blood enzyme called paraoxonase, w...e in the same area and did not get sick had higher levels
of this enzyme. Dr. Haley and his colleagues have closely followed the same group of test...
Indiana University, EPA to study airborne PCBs
BLOOMINGTON, Ind. -- The elevated PCB levels
in U.S. lakes and rivers that led to hundreds of U...ir duties, the scientists will measure atmospheric levels
of PCBs (polychlorinated biphenyls), PAHs (polycyclic aromatic hydrocarbons which result from incomp...
Marijuana use could cause tubal pregnancies
...mplantation embryo, or blastocyst, had much higher levels
of the CB1 receptor than did the brain. They also ...levels, however, implantation is blocked. Elevated levels
of anandamide also have been shown to cause spontaneous pregnancy loss in women. "I feel that it has...
Fortifying food with folic acid benefits babies
...by 70 micrograms/day, on average. The blood folate levels
of these women and of the sample of seniors 65 yea...2 status in seniors, and no evidence that improved levels
of blood folate masked this vitamin deficiency....
Pollutant causes delayed flowering in plants
...rchers identified mutant plants that produced high levels
of nitric oxide and were hypersensitive to the che...ly, mutant plants that produced lower nitric oxide levels
flowered early. Genetic studies of such mutants revealed that nitric oxide appeared to affect genes ...
Researchers ID chlorophyll-regulating gene
... "We found that mutated plants had twice the levels
of protochlorophyll than normal, wild-type plants,...e seedlings stayed in the dark, the more toxic the levels
became. Huq, now an assistant professor of molecular cell and developmental biology at the ...
Enzyme maintaining chromosome ends is linked to bone cancer recurrence, decreased survival
...samples were taken. The investigators measured the levels
of the mRNA for a part of the telomerase enzyme called TERT, which does the actual work of building maintaining and lengthening telomeres. mRNA is the decoded form of DNA that represents the "active" form of a gene. The team also tested for the pres...
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