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Tag: "volunteers" at biology news

New MRI technique shows emphysema in asymptomatic smokers

...of developing the disease. The researchers had 19 volunteers inhale a special kind of "hyperpolarized" helium b...erformed two MRI tests of the lungs. Eleven of the volunteers were smokers with no symptoms of emphysema, and the remaining eight were nonsmokers. The first image...

Thinner and younger

...tly, Holloszy and Fontana are beginning to recruit volunteers for Phase II of the CALERIE study. ...

Understanding the actions of others requires the frontal cortex

...mulation, which disrupts brain function in healthy volunteers for less than a second, to test the role of frontal cortex in tasks other than language. The findings are reported in the March 7th issue of Current Biology. In their study, the researchers showed participants video clips of a person lifting up a bo...

Restoring seagrass beds: Is it for the birds?

...esday, April 11, from 10am to 1pm as Dr. Dindo and volunteers from AmeriCorps plant 1,000 sea oats on the beaches of Robinson Island. Over the next two months, Drs. Heck and Dindo will also plant birdstakes in the damaged grassbeds, hoping to attract seabirds to use the stakes as a resting area where they can ...

Multi-million pound UK Biobank underway

...taking that will eventually recruit half a million volunteers aged 40 to 69. The project ?a UK world first ?wil...ular disease." Taking part will involve the first volunteers spending about an hour at an assessment centre in Altrincham, Cheshire, answering some questions, ha...

How 'hot' emotional brain interferes with 'cool' processing

... magnetic resonance imaging (fMRI) images of human volunteers exposed to emotional distraction revealed a "see-saw" effect, in which activation of emotional centers damped activity in the "executive" centers responsible for such processing. The findings of the Duke University Medical Center researchers provide...

International HIV/AIDS trial finds continuous antiretroviral therapy superior to episodic therapy

... in greater overall clinical benefit. HIV-positive volunteers were assigned at random to either a viral suppress...nuary 11, 2006, when enrollment was stopped, 5,472 volunteers had joined the study. At the time of the DSMB review, the average follow-up was approximately 15 mo...

Defective immune system response to smallpox vaccine detailed in new study

... dermatitis (as well as samples taken from healthy volunteers without skin disease and from people with another ...d to vaccinia virus, the skin samples from healthy volunteers and from those with psoriasis reacted by producing more LL-37. As a result, the replication of the v...

Heart-healthy compound in chocolate identified

...ch cocoas," Schroeter said. Key to the study were volunteers from the Kuna Indians, who live on the San Blas islands off the coast of Panama. High blood pressure and other signs of cardiovascular disease are rare among the island-dwelling Kuna, who are also known to consume large amounts of flavanol-rich cocoa...

Bringing the zoos to the zebras

...s Zebras project. Since 2001, teams of Earthwatch volunteers have worked with Dr. Rubenstein and his Kenyan col...r pastoral communities in the region. "Earthwatch volunteers working at the Lewa Conservancy were instrumental in helping us show that part of the reason that Gr...

Mobile phone use not linked to increased risk of glioma brain tumours

...with glioma brain tumours (cases) and 1716 healthy volunteers (controls) were interviewed about their previous mobile phone use history including how long they had used mobile phones, the number and duration of the calls they made and what make and model of phone they had used. ...

Ebola DNA vaccine produces immune responses in all fully vaccinated volunteers in Phase 1 trial

...and T-cell Ebola-specific responses in all healthy volunteers who received the full 3 doses of vaccine. The Phase 1, randomized, placebo-controlled, dose-escalation study, the first human trial for any Ebola vaccine, was sponsored by the National Institute of Allergy and Infectious Diseases (NIAID), National I...

Feinstein researchers identify intelligence gene

...nt in both the schizophrenia group and the healthy volunteers as compared with the non-carriers. "While our data suggests the dysbindin gene influences variation in human cognitive ability and intelligence, it only explained a small proportion of it -- about 3 percent. This supports a model involving multiple ...

H5N1 avian flu virus vaccine induces immune responses in healthy adults

...s in healthy adults. Approximately half of those volunteers who received an initial and a booster dose of the ...entually enrolling an additional 333 healthy adult volunteers into the trial according to the same protocol design as in stage one. The NEJM article describes ...

New male contraceptive clears hurdle

...ts on RISUG. "When we first began using RISUG in volunteers more than 15 years ago, we didn't have access to the more sophisticated toxicity tests available today," says Dr. H. C. Das, one of the lead investigators. "Last year we sent RISUG to an FDA-registered laboratory in the United States for more tests, ...

Duke to test bird flu vaccine dosing

... flu virus in the vaccine, and there is no risk of volunteers contracting bird flu or spreading it to others," Walter said. The vaccine is designed to protect against the H5N1 strain of bird flu that has infected poultry in Asia, Europe and Africa and killed 101 humans. Initial trials in healthy adults showed...

Human trial proves ricin vaccine safe, induces neutralizing antibodies; further tests planned

...ear-long pilot study involved three groups of five volunteers each. Individuals in each group received a series of three injections of various doses of the vaccine, called RiVax, over the study period. As a recombinant vaccine, RiVax is a form of ricin that consists of a genetically modified subunit of the toxi...

Men and women differ in brain use during same tasks

...nth in the journal NeuroImage. The study involved volunteers who performed memory tasks, verbal tasks, visual s...e conditions. Thirty-three healthy, right-handed volunteers (23 male and 10 female) were used in the study. The researchers say this a relatively small sample, ...

Serious adverse reactions to smallpox vaccine appear to be limited

...cine was administered to federal, state, and local volunteers who might be first responders during a bioterroris...isease Control and Prevention. A total of 37,901 volunteers in 55 jurisdictions received at least 1 dose of smallpox vaccine. VAERS received 822 reports of adve...

New malaria vaccine shows promise in early clinical trial

...ical journal PLoS Medicine, most of the 30 healthy volunteers who received the vaccine developed strong, specifi...rated that antibodies from the blood of vaccinated volunteers were able to inhibit growth of the malaria parasite in two independent laboratory assays. "A part...

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