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Science News Archive September 2007 - Page 15


Page 15 of 18

Study identifies genetic risk factor for rheumatoid arthritis, lupus

Researchers have identified a genetic risk factor for rheumatoid arthritis (RA) and lupus, with the STAT4 gene variant linked to increased disease risk in both conditions. The study suggests a shared disease pathway between RA and lupus, paving the way for potential new therapies targeting this pathway.

Drug's potential adverse side effect explained

A new study suggests that PPAR-gamma agonists, used to treat diabetes, may cause heart failure due to fat accumulation and cell dysfunction. Increased activity of the receptor leads to glucolipotoxicity, a condition characterized by deterioration in heart function.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateSep 6, 2007

Hunger hormone fights aging in the thymus

Research suggests that ghrelin improves thymic mass and T cell output with increased diversity of the TCR repertoire in mice, highlighting its potential as a therapeutic approach to boost immune function in elderly or immunocompromised individuals.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateSep 6, 2007

JCI table of contents: Sept. 6, 2007

Researchers discover ghrelin promotes thymopoiesis during aging, boosting T cell output, while also finding PPAR-gamma agonists exacerbate cardiac dysfunction due to glucolipotoxicity. Additionally, a study finds osteopontin deficiency in mice leads to improved insulin sensitivity despite obesity.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateSep 6, 2007

Ethnic minorities do stick with clinical research

A recent study found that ethnic minority women can be persuaded to take part in research studies. The factors leading to high retention rates included financial compensation and close communication with researchers. Researchers should tailor their strategies to fit different target groups.

SourceBMC (BioMed Central)·JournalBMC Public Health·DateSep 5, 2007

Heeding the WARNing from malaria’s past

The World Antimalarial Resistance Network (WARN) aims to provide a globally co-ordinated effort to tackle malaria. The network will facilitate worldwide monitoring and characterisation of drug resistance, including clinical efficacy, in vitro response, molecular markers, and pharmacological properties.

SourceBMC (BioMed Central)·JournalMalaria Journal·DateSep 5, 2007

Superbugs, shapes and nanotechnology

Researchers have found that the protective coat of superbug Clostridium difficile can self-assemble into regular shapes, opening up new avenues for fighting hospital superbugs and commercial applications in nanotechnology. This discovery could lead to identifying weaknesses in the coats or discovering new target molecules.

Mold linked to asthma

A Cardiff University study found that removing indoor mold improved asthma symptoms, with a significant decrease in inhaler use and improvement of other respiratory issues. The study suggests keeping homes dry and well-ventilated can reduce exposure to mold spores.

SourceCardiff University·JournalThorax·DateSep 5, 2007

McGill study promises faster-acting anti-depressants

A McGill University study has discovered that a new class of serotonin receptor agonists can take effect four to seven times faster than existing selective serotonin reuptake inhibitors (SSRIs). This breakthrough has the potential to significantly improve treatment outcomes for patients with depression.

SourceMcGill University·JournalNeuron·DateSep 5, 2007

Engineers rescue aging satellites, saving millions

A team of engineers from Purdue University and Lockheed Martin Corp. developed a new technique to extend the service life of two communications satellites, saving $60 million for broadcasters. The technique equalizes propellant levels in all four fuel tanks, preventing premature shutdown and waste.

SourcePurdue University·JournalJournal of Spacecraft and Rockets·DateSep 5, 2007

How the public perceives biotech

A recent study reviews the current state of public knowledge on biotechnology, revealing popular misperceptions and scientific illiteracy. The article emphasizes the need for a rational public debate to discuss risks and benefits of agricultural biotechnology.

SourceBlackwell Publishing Ltd.·JournalBiotechnology Journal·DateSep 5, 2007

A possible route to preventing Alzheimer's cognitive decline?

A study published in Neuron found a link between the toxic brain protein Aâ peptide and neuronal overexcitation, leading to compensatory rewiring of brain circuitry. This overexcitation can contribute to cognitive deficits in Alzheimer's disease. Researchers suggest blocking this overexcitation may prevent such neurological deficits.

SourceCell Press·JournalNeuron·DateSep 5, 2007

'Holy Grail' of hearing: True identity of pivotal hearing structure is revealed

Researchers have identified two key proteins, cadherin 23 and protocadherin 15, that join together at the precise location where sound vibrations are converted into electrical impulses in the ear. This discovery sheds light on the hearing process and may lead to more precise therapies for treating people with hearing loss.

Study finds a high rate of asthma in college athletes

A new study by Ohio State University Medical Center found that nearly 40% of varsity athletes tested positive for exercise-induced asthma, including those without a prior history of the condition. The study highlights the need for routine diagnosis and management tools to detect this potentially serious condition among athletes.

SourceOhio State University·JournalMedicine & Science in Sports & Exercise·DateSep 5, 2007