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Science News Archive February 2011 - Page 12


Page 12 of 25

Drug therapy shows significant benefit in treating a leading cause of childhood blindness

A new study published in The New England Journal of Medicine found that intravitreal bevacizumab significantly reduces the recurrence rate of retinopathy of prematurity in premature infants. The drug therapy also appears to preserve vision better than conventional laser treatment, with no need for intubation and a faster recovery.

SourceUniversity of Texas Health Science Center at Houston·JournalNew England Journal of Medicine·DateFeb 16, 2011

Study finds racial disparities in hospital readmission rates

A study found that elderly Medicare black patients have higher 30-day hospital readmission rates for conditions like congestive heart failure and pneumonia compared to white patients. The disparities are related to hospitals that disproportionately care for black patients, suggesting a systemic issue with the healthcare system.

SourceJAMA Network·JournalJAMA·DateFeb 15, 2011

Safety of biologic treatment for arthritis depends on the drug

A systematic review found that biologic drugs used to treat arthritis may have rare but serious side effects, including increased risk of infections and cancer. The study analyzed data from 163 studies involving over 50,000 patients, highlighting the importance of comparative safety research.

SourceWiley·JournalCochrane Database of Systematic Reviews·DateFeb 15, 2011

Zinc reduces the burden of the common cold

A systematic review published in The Cochrane Library found that zinc supplements reduce the severity and duration of illness caused by the common cold. Zinc syrup, lozenges or tablets taken within a day of symptom onset reduced symptoms severity and length of illness.

SourceWiley·JournalCochrane Database of Systematic Reviews·DateFeb 15, 2011

Atomic model of tropomyosin bound to actin

The study provides the first detailed atomic model of tropomyosin bound to actin, significantly advancing our understanding of this key cellular protein. The researchers found that the interaction between tropomyosin and actin is weak enough that it can be readily perturbed by regulatory proteins, acting as a molecular switch.

SourceCell Press·JournalBiophysical Journal·DateFeb 15, 2011

Hearing loss and dementia linked in study

Seniors with hearing loss are more likely to develop dementia over time than those with normal hearing. The study found a significant link between the two conditions, with the risk of developing dementia increasing by twofold, threefold, and fivefold for individuals with mild, moderate, and severe hearing loss.

SourceJohns Hopkins Medicine·JournalArchives of Neurology·DateFeb 15, 2011

Method of DNA repair linked to higher likelihood of genetic mutation

A recent study published in PLOS Biology reveals that Break-induced Replication (BIR) is up to 2,800 times more likely to cause genetic mutations than normal DNA synthesis. The researchers found that this method of DNA repair can lead to sudden bursts of mutagenesis, increasing the risk of cancerous cell development.

SourcePLOS·JournalPLOS Biology·DateFeb 15, 2011

New study finds no cognitive impairment among ecstasy users

A large-scale study has found that ecstasy users show no signs of cognitive impairment attributable to drug use. The research, funded by $1.8 million from the National Institute on Drug Abuse, aimed to minimize methodological limitations of earlier studies and compared 52 ecstasy users with 59 non-users.

SourceWiley·JournalAddiction·DateFeb 15, 2011

'Healthy' patients at high risk of cardiac death identified

Researchers found that an abnormal response to early heartbeats can predict cardiac death in healthy-looking individuals. Those with no conventional markers of cardiovascular disease were eight times more likely to die from cardiac causes if they had abnormal heart rate turbulence.

SourceWashU Medicine·JournalJournal of Cardiovascular Electrophysiology·DateFeb 15, 2011

Jefferson researchers provide genetic evidence that antioxidants can help treat cancer

Researchers have found that antioxidants can help prevent and treat breast cancer by targeting mitochondrial oxidative stress. The study, published in Cancer Biology & Therapy, used a genetically tractable model to show that loss of the tumor suppressor protein Caveolin-1 leads to increased oxidative stress, which fuels cancer cell gro...

SourceThomas Jefferson University·JournalCancer Biology & Therapy·DateFeb 15, 2011