Tag: "population" at biology news
Aquaculture: Not An Easy Answer To Overfishing
...ogen equal to the amount inuntreated sewage from a population
of 3.9 million people. And there are concernsthat escaped, farmed salmon may lead to genetic degradation of wild salmonpopulations. "Rapid growth in shrimp and salmon farming has clearly causedenvironmental degradation, while contributing lit...
Patented Bait System May Hold Answer To Combating Formosan Termites
...cant control. A termite colony can have a population
from 500,000 to as many as10million, he explains. A quarter million termites can be killed with as littleas 0.01 grams of active ingredient when it is provided in a bait formulation. "We can't really prove the elimination of termites, only t...
New Hypothesis Proposed For Cause Of Chronic Fatigue Syndrome
...nd evidence of a common virus when looking at a population
of CFS patients. The hypothesis was included in a paper published in the current issue of the American Journal of Medicine. The new theory, proposed by Ronald Glaser, professor of medical microbiology and immunology, and Janice Kiecolt-Gl...
Virginia Tech Scientist Seek Genetic Solution To Malaria
... the gene and to introduce the modified geneinto a population
of mosquitoes." Luckhart is looking at biological and biochemical events occurring inthe mosquito and in the parasite during the two-week incubation period. "What we want to do is identify points in that process where themosquito's ...
Chiron Discovers Significant Hepatitis C Binding Mechanism; Data Indicates CD81 Protein May Be A Virus Receptor
...each year. Currently three percent of the world's population
is chronicallyinfected with HCV, the leading cause of liver disease. HCV is known to enter through the patient's bloodstream, and in a relativelyshort time the virus settles in the liver. There the virus begins replicating,and in some individuals ca...
Mouse Study Trumpets New Way To Preserve Species
...genetic information and to reintroduce it into the population
through planned breeding programs." In most cases, scientists have been working with sperm because it's easier to collect and store. Although sperm from some species can be preserved using the methods developed for humans, these procedures can c...
Wisconsin Scientists Culture Elusive Embryonic Stem Cells
...iate, but the differentiation is to a random,mixed population
of cells. Finding ways to direct the human embryonic stem cells to become specific cellsof clinical importance is an important next step required before new therapiescan be developed. Ways to prevent the immune system from rejecting transplanted cell...
Environmental Factors Contribute To High Blood Pressure In African-American Males
...ving conditions exacerbatehypertension and putthis population
at even greater risk. The good news is that innovative andcomprehensiveapproaches to the management and treatment of hypertension can have asignificant impact oncontrolling high blood pressure. "Use of an intervention team kept the men from hav...
Wake Forest Physicians Demonstrate How Gene-Diet Interaction Affects Cholesterol Absorption
...subjects." He said about 15 percent of the population
carry the apo A-IV-2 gene;most of the rest have the apo-A-IV-1 gene. In the current study, the subjects,mostly medical students and staff members of the Wake Forest University BaptistMedical Center, were tested with three high cholesterol diets, vary...
Vulnerability To Compulsive Gambling Is Partly Inherited
...aid. Between one and three percent of the American population
has major gamblingproblems, and many more people who don't meet the official criteria forpathological gambling have problems with gambling that adversely affect theirlives and relationships. That negative influence is becoming more apparent as gambli...
Gene Influences How Lifestyle Affects Blood Cholesterol
...ow risk for heartdisease. About 10 percent of the population
carries at least one copy of thisform of the gene ...ase. Scientists say that roughly 20 percent of the population
carries the E-4 form.Individuals with two copies of (apo)E-3, about 70 percent of the population,ten...
Genetic Uniqueness Threatens Florida Manatee's Future
...r numbers will rise and fall on their own. "If the population
crashes, they are gone," Garcia said. "It is unlik...wen said thepopulation still is healthy, but their population
trend must be watchedclosely. "We have to watch them, and if we see a downward trend, then additiona...
Penn Researchers Awarded $10 Million Grant To Study Link Between Genes And
...ation-based to ensure representation of the entire population
and toeliminate selection bias. The two populati... withcancer, and to identify specific women in the population
whosecancer risk may be increased after taking hormones."...
Duke Study Finds More Genes May Be Affected By Toxic Cadmium
...also known tocause various cancers in rodents, and population
studies suggest it causes humantumors, too. Previous studies, some of them led by Freedman, had identified less than15 genes that respond to cadmium exposure by triggering the synthesis ofelevated amounts of proteins, he said in an interview....
Molecular Mechanism For Evolution Described
...ally keeps certain inherent geneticvariations in a population
silent, but can reveal them during times ofstress,...appen to be valuable, they canbe stabilized in the population
without requiring constant changes in Hsp90 or the environment." Lindquist speculates that Hsp 90 ma...
Greater Prairie Chicken Appears On Comeback Trail In Illinois
...ogram was based on geneticfindings and 35 years of population
monitoring. The greater prairie chicken (Tympanuc... going outon a high note. Rather than seeing this population
of Illinois birds lostaltogether, we are seeing a recovery. I am very glad to see this." The findin...
UCSF Study Finds No Association Between Hair Dye And Non-Hodgkin Lymphoma
...wo decades, the incidence of NHL amongthe American population
has surpassed most other cancers; increasing 4 percentper year in men, and 3 percent per year in women. However, known risk factorsonly explain a small portion of the estimated rise in incidence of NHL that hasoccurred since the late 1940's. In add...
Cells From Mother Can Boost Success Of Sibling-To-Sibling Kidney Transplants
..., Grailer determined that adrastically outnumbered population
of donor white blood cells coated withmaternal antigens was able to suppress the recipient's expected immune response,creating a unique tolerance for the transplanted organ....
Could A Nasal Vaccine Finally Get Rid Of The Black Death?
...gue, the disease that wiped out athird of Europe's population
in the 14th century. If this new vaccine also worksin human trials, it may allay fears of a worldwide pandemic started byantibiotic-resistant plague bacteria. Round the world, one to two thousand cases of the plague are reportedeach year. Bub...
Major New Study Shows HIV-1 Antibodies Found In Urine
... is compartmentalized,as the data for the low risk population
suggest, how is the individualable to avoid more g... of similardiscordancies found in the CRL low-risk population
study, we need todo more research and larger epidemiologic studies to evaluate thesignificance of th...
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