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Tag: "association" at biology news

Ocean virus identified in human blood samples

...n Virginia Medical School, and AVI BioPharma. The association between viral infection and the presence of a disease of unknown cause does not prove cause and effect, the researchers say, but the data are intriguing and raise important new questions. Further research is needed to establish proof that infection w...

Mouse study reveals human X-SCID gene therapy poses substantial cancer risk

...ndings. "We were surprised by the strength of the association between IL2RG gene therapy and development of lymphoma," says Woods. "These results suggest that curing X-SCID by replacing IL2RG in the manner it is currently being done puts patients at an increased risk of developing cancer." Woods adds that the...

Bioengineers create stable networks of blood vessels

...or cells from the brain. Because there is often an association of nerve connections with vascular networks, they tested to see if a combination of the blood vessel-forming and nerve-forming cells would enhance development of the vascular networks. "By their nature, hydrogels are well suited for the transport of...

Chlamydia parasite lives off our fat

...ption also suggests a possible explanation for the association between chlamydial infections and heart disease. ...

New technique helps researchers determine amino-acid charge

...esolution to let researchers accurately detect the association and dissociation of protons to and from individual amino-acid residues in real time. Using the patch-clamp technique, the researchers were able to probe the electrostatic properties of the inner lining of the ion-channel's pore, and, from there, the...

No link found between caffeine intake and development of hypertension in women

...creased risk of hypertension in women, although an association was found with the consumption of sugared or diet ...Several previous studies have indicated a possible association between caffeine intake and the risk of hypertension. Short-term studies have demonstrated that caff...

New methods offer insight into regulatory DNA

...carried out to provide increased confidence in the association between gene activity and sequence variation. "Ou...etation of variation and disease. Such genome-wide association studies will be able to identify some regions of the genome with strong disease effects. "The HapMa...

Same-sex mating by fungi spawned infection outbreak, evidence suggests

... death. While C. neoformans is found worldwide in association with pigeon droppings, the rarer C. gattii is norm...ricted to tropical and subtropical areas, often in association with Eucalyptus trees. "It is suspected that the infectious propagules of Cryptococcus are airborne...

Brain activity related to processing faces is similar in people with, without autism

...ons of the brain increase their neural activity in association with various actions or thought processes, they emit enhanced blood oxygen level dependent signals. The signals can be localized in the brain and translated into digital images that portray neural activity level as a ratio of oxygenated to de-oxygena...

Rutgers researchers scientifically link dancing ability to mate quality

...ems it encounters as it matures. Symmetry, and its association with attractiveness, therefore indicates an organism's underlying quality as a potential mate. The study showed that higher-rated dancers were typically people with greater body symmetry. "At least since Darwin, scientists have suspected that dance ...

Gene controls whether fear is a factor

...ctric shock, he explained. That process of learned association occurs in a portion of the amygdala called the lateral nucleus. As a first step to unravel the molecular events underlying fear learning, Shumyatsky's group recently identified several genes present at particularly high levels in the lateral nucleus...

Researchers identify molecular anchor that allows bacterial invasion of central nervous system

... found that a gene called iagA (short for invasion association gene-A) played a central role. By producing a fat-sugar complex that anchors LTA, iagA establishes a link that allows bacteria to begin making its way into the nervous system. The researchers found that removing the iagA gene from the Streptococcus ...

Cornell finds natural selection in humans

... amino acid variants that could then be tested for association with human disease in subsequent studies. The Cornell researchers became involved at the analysis stage in order to make predictions about what types of changes are most likely to be functionally important. ...

Protein behind autumn color splendor identified

...earch team at Umea Plant Science Center (UPSC), in association with a Polish scientist, has identified a protease that degrades LHCII. The researchers assumed that the protease belonged to a certain family of proteases, the so-called FtsH proteases, and they used genetically modified mouse-ear cress plants in w...

A bug's life: Exceptional genomic stability yet rapid protein evolution in a carpenter ant mutualist

...tionally unbalanced food sources. This mutualistic association is thought to contribute to the astounding ecological success of Camponotus, which, with approximately 1,000 species, represents the second largest ant genus. By sequencing the genomes of symbiotic microbes, scientists are currently uncovering the b...

Researcher uncovers details of how cancer spreads

...alled focal adhesion kinase, inside the cell. This association jump-starts a series of cascading interactions bet...ked to viruses, including the herpes virus and its association with cervical cancer. "Critics of this work will ask why v-Src has not been found in human cancer,"...

Oldest dated evidence of cattle in southern Africa found

...ew dates support this view and confirm a long-term association between people and livestock in this part of the Kalahari. The discovery of the 2000 year old cow and sheep bones are important because of the long held view that the Kalahari was a comparatively isolated area that was primarily occupied by foraging ...

Housecat-sized Siberian tiger cubs get collared

...ssigned to specific genomic regions based on their association with DNA markers. The success of disease-association studies is dependent upon several characteristics of the DNA markers, including allelic frequency and genomic coverage. In some cases, a particular variant at one locus is perfectly associated wi...

Studies on human genome variation provide insight into disease

...ssigned to specific genomic regions based on their association with DNA markers. The success of disease-association studies is dependent upon several characteristics of the DNA markers, including allelic frequency and genomic coverage. In some cases, a particular variant at one locus is perfectly associated wi...

Bacteria in Household Dust May Trigger Asthma Symptoms

...at NIEHS and the University of Iowa found a strong association between endotoxin levels and the prevalence of dia...red furniture and assayed for endotoxin. A disease association analysis was performed to correlate endotoxin concentrations to specific health outcomes. “When we ...

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