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Tag: "affected" at biology news

St. Jude study solves mystery of mammalian ears

...the cilia to amplify sound, then hearing should be affected when the mutant prestin made the cell extend itself. Therefore, the team developed a line of genetically modified mice that carried only mutant prestin in their outer hair cells. The researchers then tested the animals’ responses to sound. Results ...

Carnegie Mellon scientists find key HIV protein makes cell membranes bend more easily

... how HIV fusion peptide (part of a larger protein) affected the energy of manufactured lipid bilayers made to mimic normal cell membranes. Lipid bilayers provide a protective barrier for the cell against intruders, yet also contain molecules to recognize and communicate with other cells or get nutrients. Cell...

Brain inflammation may be friend, not foe, for Alzheimer's patients

...mory and one of the first parts of the brain to be affected by the disease – and followed the mice for an additional month, watching for effects in the brain regions that were awash in higher-than-normal levels of IL-1beta. It’s the first use of an organism where scientists can boost IL-1beta in select areas ...

Cigarette smoke alters DNA in sperm, genetic damage could pass to offspring

... well the possibility that the eggs of females are affected by smoke....

Gene therapy delivery of nerve growth factors reverses erectile dysfunction in animal model

...of ED vary but range from 15 million to 30 million affected men in the United States. ED is frequently associated with damage to the cavernous nerve that results from surgery for prostate cancer. Even if a patient receives a nerve-sparing procedure during surgery, recovery from ED after radical prostatectomy ...

CSIRO scientists join fight to save 'Tassie devil'

...sts have processed and examined 29 lesions from 12 affected animals and have also collected and processed a further 30 affected animals where both tumour tissue and tumours grown in the laboratory were examined. A recent Sen...

Rising skin cancer rates are more likely to affect wealthy people, says 12-year review

...cinoma, the most common form of skin cancer, which affected some 1,444 people a year in Northern Ireland durin...“This means that our results are less likely to be affected by different skin tones and ethnic origin than research carried out in countries with a greater ethn...

Marine phytoplankton changes form to protect itself from different predators

...ts then studied how the different chemical signals affected the percentage of Phaeocystis living in colonies o...lls. Finally, they examined whether this response affected how much the predators ate to determine if the change conferred a survival advantage. “We found t...

Research finds that circadian rhythms dominate all life functions

...at only 10 percent to 15 percent of all genes were affected by nature's clock. While scientists have long know...ghout the day. Every pathway of gene expression is affected by circadian rhythms, and the timing of the rhythms from each group of genes that are synchronized i...

Clot-dissolving agent may be beneficial in treatment of severe frostbite

...erwent imaging studies to assess blood flow to the affected limb. From 2001 to 2006, six patients with abnorma... within 24 hours of injury, six of 59 (10 percent) affected fingers or toes were amputated, compared with 97 of 234 (41 percent) among those who did not receive...

Restricting hospital-based services during SARS outbreak had modest impact

...ility of a health system to admit large numbers of affected patients during a future epidemic would be limited by continued high levels of hospital occupancy. For example, the 12% decrease in overall admissions seen during the SARS restrictions would only offset one-quarter of the number of additional admissi...

Prey not hard-wired to fear predators

... demonstrated that caribou, elk, and moose are all affected by both the loss and return of their predators in ways that are important for conservation and ecosystem integrity. These findings come at a time when, after more than $23 million was spent to re-establish wolves in the northern Rocky Mountains,...

Ancient retrovirus sheds light on modern pandemic

...se ancient viruses more so than the ones that have affected us only recently, such as HIV."...

Experimental gene therapy 'abolishes' arthritis pain and lessens joint damage

..., and significantly reduce long-term damage to the affected joints, according to a study published today in the journal Arthritis and Rheumatism. While the study was done in mice, they are the first genetically engineered to develop osteoarthritis like humans, with the same genetic predisposition that makes s...

New research shows sharks use their noses and bodies to locate smells

... preference and search time were not significantly affected by light condition. In the light, lesioning the lateral line increased search time, but did not affect success rate or plume preference. However, lesioned animals no longer discriminated between sources of turbulent and oozing odor. In the dark, ...

How brain pacemakers erase diseased messages

...suggests, by determining the number of brain cells affected by a particular series of pulses. A better understanding of the processes underlying deep brain stimulation could enable physicians to better fine-tune electrical implants, Grill said. That could be particularly useful for zeroing in on effective ...

'Virtual Patient' to simulate real-time organ motions for radiation therapy

... radiation treatment or imaging of tumors that are affected by such organ movement," Xu said. "In order to det... breathing function and air volume change that are affected by several physiological factors over the course of the radiation treatment." Real-time simulatio...

HIVMA opposes The Gambia's unproven AIDS remedy

...oviral treatment to communities that are so deeply affected by this disease." Dr. Kuritzkes added. "We urge the government of the Gambia to support their efforts as well." Dr. Kuritzkes concluded, "People around the world living with HIV/AIDS deserve safe, effective, and affordable treatment, regardless of...

Puzzling plankton yield secrets to role in evolution/global photosynthesis

...uman activities. Clearly, this storage capacity is affected by changes in the photosynthetic efficiency of the algae, which in turn is linked to the environmental conditions experienced by these organisms in their environment." The ecology of picoeukaryotes, said Moreau, has thus become an intense field o...

Scripps research team sheds light on long-sought cold sensation gene

...n-causing chemical, formalin, and then exposed the affected paw area to a cold plate. Cold temperature clearly reduced the acute pain felt by control mice as shown by a reduction in the response to formalin injection when compared to the amount of time control mice spent flicking and licking their paws wh...

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