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Science News Archive May 2005 - Page 4


Page 4 of 16

Tobacco use persists after liver transplant for alcoholic liver disease

A recent study found a significant percentage of patients who received a liver transplant due to alcoholic liver disease also used tobacco post-transplant. The majority of smokers resumed their habit quickly and showed increased consumption over time, highlighting the need for more stringent monitoring and intervention.

SourceWiley·JournalLiver Transplantation·DateMay 24, 2005

Tiny bundles seek and destroy breast cancer cells

Researchers at Penn State have developed a new ceramide-based therapy that targets and destroys breast cancer cells while sparing healthy tissue. The treatment uses liposomes to deliver ceramide to the tumor, where it disrupts mitochondria and causes cell death.

SourcePenn State·JournalClinical Cancer Research·DateMay 24, 2005

Decreasing death anxiety

A study found that support groups improved depression symptoms and lessened death anxiety in patients with serious medical conditions, leading to better spiritual well-being. Patients were divided into three groups and received either standard care or participated in monthly support group meetings discussing challenging issues.

SourceIndiana University·JournalJournal of Palliative Medicine·DateMay 24, 2005

Laughter-induced asthma: It's no joke

A study of 235 patients with asthma found that laughter-induced asthma (LIA) is a common condition, affecting 56% of patients. Patients with LIA reported longer periods of well-controlled asthma during which they could laugh without experiencing symptoms, suggesting that LIA may indicate poorly controlled asthma.

In less dense neighborhoods

After the terrorist attacks, Ohio homeowners shifted their priorities to prioritize housing density, parks, and safety over other factors. A third survey conducted in spring 2004 found that despite increased fear of terrorism, home preferences returned closer to pre-9/11 levels.

A continent split by climate change: New study projects drought in southern Africa, rain in Sahel

A new study links drought in southern Africa to the warming of the Indian Ocean, contradicting earlier research that connected it to the Sahelian region. The analysis suggests a late 20th-century cooling of the North Atlantic Ocean was key to Sahelian drought, with recent warming leading to increased rainfall in the area.

Medication errors continue even in highly computerized hospital

In a study published in Archives of Internal Medicine, researchers found that despite implementing multiple computerized interventions, medication errors continued to occur at high rates. The authors identified common error types, including failure to monitor adverse drug reactions and improper medication dosages.

SourceJAMA Network·JournalArchives of Internal Medicine·DateMay 23, 2005

After a time-shift, mixed signals from the circadian clock

Researchers discovered that rat brains exhibit distinct responses to a six-hour delay in the light schedule, with one region adapting quickly and another taking several days. The study suggests that this difference in response is due to the neurotransmitter GABA, which affects brain regions differently.

SourceCell Press·JournalCurrent Biology·DateMay 23, 2005

Building a human kinase gene repository

A new human kinase gene repository has been established, featuring a comprehensive collection of protein and non-protein kinases. The repository will facilitate high-throughput assays and structural studies of this crucial gene family, which plays key roles in various cellular processes.

SourceHarvard Medical School·JournalProceedings of the National Academy of Sciences·DateMay 23, 2005

International medical journals amplify call for registration of drug trials

Major medical journals, including Annals of Internal Medicine, will consider publishing results of clinical trials only if they are registered in a publicly accessible database before enrollment begins. The International Committee of Medical Journal Editors (ICMJE) has adopted a set of 20 required data elements for trial registration.

SourceAmerican College of Physicians·JournalAnnals of Internal Medicine·DateMay 23, 2005

New playground equipment safer

A recent study by A.W. Howard and colleagues found that replacing hazardous playground equipment with safer versions significantly reduced injury rates. The study, which analyzed data from 86 schools, avoided 550 injuries over a 10-month period after the replacement of unsafe equipment.

SourceCanadian Medical Association Journal·JournalCanadian Medical Association Journal·DateMay 23, 2005

Racehorses, asthmatics, meatpackers may have similar etiology of airway disturbances

A new study suggests that strenuous exercise followed by exposure to environmental antigens may promote over-production of antibodies, leading to asthma-like airway disease. The research also found a similar 'window of susceptibility' in athletes and horses, linking the development of conditions like heaves and ski asthma.

SourceAmerican Physiological Society·JournalJournal of Applied Physiology·DateMay 23, 2005

New World founders small in number

A new study reveals that the first New World populations were founded by a remarkably small group of approximately 70 individuals, who left their ancestral Asian population around 7,000 to 14,000 years ago. This approach addresses limitations in traditional genetic studies and provides insight into the history of the Americas.

SourcePLOS·JournalPLOS Biology·DateMay 23, 2005