الاثنين، 7 نوفمبر 2011

ScienceDaily: Health & Medicine News

ScienceDaily: Health & Medicine News


Research shows 'weak evidence' for the benefit of exercise referral schemes

Posted: 07 Nov 2011 12:39 AM PST

While it is acknowledged that physical activity promotion is a key public health message, a new study questions the effectiveness of current exercise referral schemes and whether improvements to existing schemes or better targeting should be sought.

Decrease in observed rate of TB at a time of economic recession

Posted: 07 Nov 2011 12:39 AM PST

The incidence of tuberculosis in the US is reported as being on the decrease, however untreated infected people act as a reservoir for disease.

Most lupus nephritis patients with end-stage renal disease opt for hemodialysis therapy

Posted: 07 Nov 2011 12:39 AM PST

Newly published research shows that more patients with end-stage renal disease caused by lupus nephritis choose hemodialysis as their initial kidney replacement therapy over peritoneal dialysis and preemptive kidney transplantation. Results of the study also found that African-Americans, Medicaid recipients, those without health insurance, and the unemployed had significantly reduced initiation of peritoneal dialysis.

Process important to brain development studied in detail

Posted: 07 Nov 2011 12:39 AM PST

Knowledge about the development of the nervous system is of the greatest importance for us to understand the function of the brain and brain disorders. Researchers in Sweden have examined the key step when genes are read and found that genes that are active in the brain are transcribed with a special mechanism. The findings can be of importance in our understanding of the genetic causes of certain brain diseases.

HIV study identifies key cellular defence mechanism

Posted: 07 Nov 2011 12:39 AM PST

Scientists have moved a step closer to understanding how one of our body's own proteins helps stop the human immunodeficiency virus (HIV-1) in its tracks.

Certain medications used for diseases such as rheumatoid arthritis not associated with increased risk of hospitalization for serious infections

Posted: 06 Nov 2011 04:13 PM PST

Although there has been concern about the safety of using the type of drugs known as tumor necrosis factor-alpha antagonists for the treatment of autoimmune diseases such as rheumatoid arthritis and psoriasis, new research finds that overall, use of these medications is not associated with an increased risk of hospitalization for serious infections compared with the use of nonbiologic medications, according to a new study.

Study identifies factors linked with better medication response for treatment of juvenile arthritis

Posted: 06 Nov 2011 04:06 PM PST

Among patients with juvenile idiopathic arthritis who initiated treatment with the drug etanercept, one-third achieved an excellent response, and this response was associated with low measures of disability at study entry, younger age at the onset of JIA, and fewer disease-modifying antirheumatic drugs used before initiating etanercept, according to a new study.

Metabolic protein plays unexpected role in tumor cell formation and growth

Posted: 06 Nov 2011 12:10 PM PST

The embryonic enzyme pyruvate kinase M2 (PKM2) has a well-established role in metabolism and is highly expressed in human cancers. Now, researchers report that PKM2 has important non-metabolic functions in cancer formation.

Volunteers end simulated mission to Mars

Posted: 06 Nov 2011 11:20 AM PST

The record-breaking simulated mission to Mars has ended with smiling faces after 17 months. Mars500's six brave volunteers stepped out of their 'spacecraft' Nov. 4, 2011 to be welcomed by the waiting scientists -- happy that the venture had worked even better than expected. Mars500, the first full-length, high-fidelity simulation of a human mission to our neighbouring planet, started 520 days earlier, on 3 June 2010, at the Institute of Biomedical Problems in Moscow.

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