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Tag: "association" at biology news

Matrilin-3 gene discovered to prevent onset of osteoarthritis

... the authors write. "However, the mechanism of the association between increased bone density and joint degeneration is not known. Our data show that matrilin-3 deficiency results in both the increase of BMD and joint cartilage degeneration, thereby connecting these two events together." Researchers could not ...

New HIV study identifies high-risk subgroups of adolescents

... that effective HIV prevention needs to target the association between mental health and substance abuse with sexual risk for some adolescents, the authors say. There were also significant demographic differences between the groups of females. Girls in the group at highest risk for HIV (those reporting the most...

Mitochondrial DNA sequencing tool updated

...hondrial genome, or complete set of genes, and its association to human disease. In the early 1980s, scientists in England performed the then-Herculean feat of sequencing the complete human mitochondrial genome. The genome consisted of 16,568 base pair, or units, of DNA and encoded 37 contiguous genes. But...

Innocuous intestinal bacteria may be reservoir for resistance

...y farms recently surveyed in Georgia, there was no association found between antibiotic use and isolation of multi-drug resistant Salmonella. Where does the drug resistance in Salmonella originate?" says Susan Sanchez of the University of Georgia, who conducted the study with other researchers from the Universi...

Single cell amoeba increases MRSA numbers 1000- fold

...gues at the University of Bath, found that MRSA in association with amoebae increased in numbers 1000- fold. The pathogenic bacteria, Legionella, also replicate inside amoebae and are then released into the environment. The released bacteria are less susceptible to biocides and antimicrobials, and are more inv...

Inflammation and drugs to control this activity studied in a variety of tumors sites

...sk factors for cancer. "We observed a significant association between serum PSA and the degree of chronic inflam...s. According to Daugherty, no one had examined the association between AMACR variants and colorectal adenomas or cancer. The research team identified 725 white me...

Study reveals classic symbiotic relationship between ants, bacteria

..." The degree of specialization indicates that the association between the ants and the bacteria is ancient, says Currie, and likely vital to the species' survival. The phenomenon extends beyond the two species of Cyphomyrmex to about 210 species of fungus-growing ants, which harbor many different species of a ...

New study shows benefit of early therapy in HIV-infected infants

...e 5 months." However, the authors did not find an association between early age at initiation and an increased likelihood of sustaining CD4 cell level recovery. They found that the risk of subsequent deterioration was similar for children initiating treatment in all age groups. Still, because initiating effect...

Avian flu transmission to humans may be higher than thought

A new study suggests that there is an association between direct contact with dead or sick poultry and flu-like illness in humans and that the transmission is probably more common than expected, according to a new study in the January 9 issue of Archives of Internal Medicine, one of the JAMA/Archive...

Therapeutic prospects beyond Vioxx

...ational Medicine and Therapeutics, Ever since the association of selective inhibitors of COX-2 ?Vioxx, Bextra, and Celebrex ?with an increased incidence of heart attack and stroke, there has been intense interest in understanding the mechanism involved. Clarification of this issue offers the prospect of conserv...

Two NIH initiatives launch intensive efforts to find roots of common diseases

... Inc. of Santa Clara, Calif., to accelerate genome association studies to find the genetic roots of widespread si... accelerate this important research on the genetic association studies. The new partnership, called the Genetic Association Information Network (GAIN), is being l...

HPV subtype associated with squamous cell skin cancers

...s associated with the highest risk of SCC, but the association had limited statistical precision. Infection with HPV types from the genus alpha, which includes HPV 16, has been associated with other epithelial cancers such as cervical cancer. Genus beta HPVs, which includes HPV types 5 and 8, have been detecte...

Exposure to volcanic mineral associated with increased mesothelioma incidence in Turkey

...nvironmental exposures and additional study of the association between environmental exposure to nonasbestos fibers and the risk of cancer." ...

U-M scientists identify major psoriasis susceptibility gene

...asis," Nair says. "Many studies confirmed a strong association with the MHC, but no one could determine which gene in the MHC was involved in psoriasis." In a previous study, Nair and his U-M colleagues narrowed the search for the PSORS1 gene down to a 300,000-base-pair segment of chromosome 6 that included HLA...

Breast implants not associated with cancer risk, study reports

... authors conclude. Past reports have examined the association between cosmetic breast implants and cancer risk, ...een found. However, few studies have examined this association after more than 15 years. Joseph K. McLaughlin, Ph.D., of the International Epidemiology Institute ...

Protein 'nanosprings' most resilient found in nature

...tt said. For example, ankyrin repeats are found in association with specialized hair cells of the inner ear, where they play a critical role in converting sound (a mechanical stimulus) into an electrical signal that can be transmitted to the brain ?a process known as mechanotransduction. Ankyrin proteins also c...

Engineered mouse mimics cognitive aspects of schizophrenia

...y were less able than normal mice to reverse their association of a particular odor with a reward. Biochemical analyses of the animals' brains revealed that the excess dopamine receptor activity in the striatum contributed to abnormal prefrontal cortical function. Importantly, found the researchers, they could...

Virginia Tech scientists develop process for creating biocompatible fibers

...ogical experiments to fundamentally understand the association of small molecules, then he determined that once phospholipids form an entangled network they can be treated similarly to higher weight molecules and electrospun. The size of the mats is limited only by the amount of material, such as lecithin. "Th...

Relic of life in that Martian meteorite? A fresh look

...always associated with the mineral magnetite. This association is important because magnetite is known to act as a catalyst in the formation of MMC. Macromolecular carbon present within the carbonate globules in ALH84001 may represent the first evidence of non-biological synthesis of organic molecules on Mars. ...

Antioxidant selenium offers no heart-disease protection

...rial covering 13 years has shown. The selenium-CVD association was a secondary endpoint in the Nutritional Preven...d for an average of 7.6 years. Results showed no association between selenium supplementation on any of the endpoints studied: coronary heart disease, stroke or ...

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