Tag: "rates" at biology news
Chronic inflammation caused by too little stomach acid leads to gastric cancer
.... "We found striking differences in the apoptotic rates
of parietal cells in the fundus, or upper compartment of the stomach, compared to the antrum where the tumors were developing," Merchant says. "The antrums we studied had a 50-percent to 75-percent decrease in the cell death rate. Rates of cell growt...
Researchers pioneer new gene therapy technique using natural repair process
... easily maintained after many cell divisions. "The rates
of correction that we see are extremely exciting," said Dr. Porteus, who was recently awarded a 2004 Distinguished Young Researcher Award from the President's Research Council at UT Southwestern for his early contributions to the gene therapy techniq...
Lung cancer vaccine trial continues at UK's Markey Cancer Center
...ed with the hope of reducing the unacceptably high rates
of recurrence and disease progression seen in the treated lung cancer population. The cancer vaccine program is now enrolling a second cohort of subjects to study the effects of the vaccine in lung cancer patients. The vaccine is delivered following ...
Other highlights in the April 6 JNCI
...o radiotherapy was associated with better survival rates
compared with radiotherapy alone in patients with ...cancer (NSCLC), according to a new study. Survival rates
for patients with advanced NSCLC treated with standard cisplatin-based chemotherapy are low--30% to ...
Research shows smoking adds a decade to reproductive age of IVF patients
...of 27kg/m2 or more. Older women had lower success rates
no matter what was the cause of subfertility, with the live birth rate decreasing by 2% for each additional year of age. "In all subgroups smokers had a lower delivery rate per treatment cycle than non-smokers," Dr Lintsen said. "The live birth rate ...
Where bacteria get their genes
...lop new antibiotics, it's important to monitor the rates
and patterns of lateral gene transfer," said team member Howard Ochman, a UA professor of biochemistry and molecular biophysics and a member of UA's BIO5 Institute. The research also solves a long-standing evolutionary puzzle. Many scientists have ar...
Research news from the Friedman School of Nutrition Science and Policy at Tufts University
...wn that populations with a low-fat diet have lower rates
of prostate cancer, although studies about the types of dietary fat have had mixed results," said Mohsen Meydani, DVM, PhD, director of the Vascular Biology Laboratory at the Jean Mayer USDA Human Nutrition Research Center on Aging at Tufts Universit...
Low oxygen likely made 'Great Dying' worse, greatly delayed recovery
...lion years ago was preceded by elevated extinction rates
before the main event and was followed by a delaye...ly a major reason for both the elevated extinction rates
and the very slow recovery. Earth's land at the time was still massed in a supercontinent called Pa...
OneWorld Health receives multimillion dollar grant for next steps in control of deadly disease
...at. Given the high safety levels and initial cure rates
comparable to current hospital-based therapies, we believe paromomycin will help the Indian government to safely and affordably control VL. This grant allows us to realize the next steps required to deliver the drug to the people who need it most," D...
Diversity, endemism, and age distributions in macroevolutionary sources and sinks
...valves shows that the polar oceans have had higher rates
of immigration and extinction and much lower rates
of origination than have the tropical and temperate oceans. This example underscores the importance ...
Small clades at the periphery of passerine morphological space
...ggests that these lineages must have unusually low rates
of speciation and extinction compared to other son...ive songbirds. How such marginal ecology slows the rates
of species formation and extinction remains an open question....
Why is Scotland's population shrinking and ageing? - A new research initiative
... European countries are experiencing falling birth rates
and an ageing population, the demographic challeng...dinburgh and St Andrews will explore why fertility rates
vary widely within Scotland. 3. Macroeconomic impacts of demographic change in Scotland. Researchers...
Surgery season and vitamin D intake may predict successful lung cancer surgery
...surgery in summer. Five year disease-free survival rates
were 54 percent, 56 percent, and 70 percent, respe...ere operated in summer. Five-year overall survival rates
were 50 percent, 57 percent, and 59 percent for patients who had surgery in winter, spring/fall, and...
PNAS highlights for the week of April 18 - 22
... heart disease. Finally, happy men had lower heart rates
over the day and evening, which suggests good cardiovascular health. These results were independent of psychological distress, the authors say, which implies that positive well-being is directly related to the biological processes relevant to health....
Nitrogen fertilization of soil puts rare plant species at risk, nationwide study determines
...nd in rain," she said. "Annual nitrogen deposition rates
can reach more than 50 kilograms per hectare in au...n California, which is in the range of application rates
of nitrogen fertilizers for farming. Even relatively pristine areas such as the alpine tundra are ex...
Friendly bacteria in humans may protect against HIV
...apped the virus and blocked infection. Due to high rates
of mutation, repeated attempts at developing a vaccine to protect against HIV have failed. Inoculating the major mucosal surfaces where HIV transmission occurs with the HIV-capturing lactobacilli may provide a safe and cost-efficient method for prev...
Method shows how precisely gene expression signals are copied in DNA replication
...e sequence is expressed. Understanding methylation rates
is important because the rate of genetic mutation ..."The new mathematical model allows us to infer the rates
of both maintenance and de novo methylation without directly identifying parent and daughter DNA str...
'Live fast, die young' applies to forests, too
...ephenson and van Mantgem show that birth and death rates
of trees vary in parallel with global patterns of forest productivity. In less productive forests, such as coniferous forests growing at high latitudes, a century or more can pass before half of all trees die and are replaced with new growth. In c...
Other highlights in the April 20 JNCI
... human immunodeficiency virus (HIV)/AIDS have high rates
of human papillomavirus (HPV) infection and an ele...d, and could explain, in part, why cervical cancer rates
have not reached epidemic proportions in HIVpositive women. Contact: Abe Habenstreit, Media Relation...
Mother's prenatal and lactational diet may protect daughters from breast cancer
...elop breast cancer, Hardman compared the incidence rates
for the disease in offspring depending upon theirs and their mothers' relative consumption of diets either high in omega-6 fatty acids, or high in omega-3 fatty acids. The genetic make-up of the female mice was such that all would develop hyperplasia...
1 2 3 4 5 6 7 8 9 10