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Science News Archive October 2011 - Page 26


Page 26 of 28

Researchers question key quality measure for asthma

A study published in JAMA found that hospitals' compliance with the Children's Asthma Care measures had no impact on patient outcomes, including return to the hospital for another asthma attack. The researchers concluded that these measures may not be suitable for public reporting, accreditation, or pay-for-performance policies.

SourceUniversity of Colorado Anschutz Medical Campus·JournalJournal of the American Medical Informatics Association·DateOct 4, 2011

A new leaf turns in carbon science

Researchers reveal new insight into global photosynthesis, estimating a 25% increase in the chemical process governing CO2 absorption and release. The study provides a benchmark for models simulating carbon cycling through plants.

SourceCSIRO Australia·JournalNature·DateOct 4, 2011

Why narcoleptics get fat

Researchers found that narcoleptic patients have a deficiency of the neuropeptide hormone orexin, leading to impaired brown fat activity. This can result in excessive weight gain despite reduced caloric intake.

SourceCell Press·JournalCell Metabolism·DateOct 4, 2011

This is your brain on estrogen

Researchers have identified estrogen receptors in specific brain areas that influence metabolism, weight gain, and fertility. Deleting these receptors from mice resulted in significant weight gain and metabolic changes.

SourceCell Press·JournalCell Metabolism·DateOct 4, 2011

Frequently used weight-loss method is light on evidence

A newly published Cochrane systematic review reveals that the transtheoretical model stages of change (TTM SOC) method is ineffective in achieving significant weight loss. The study found that TTM SOC resulted in only 2kg or less weight loss, and no conclusive evidence of sustained weight loss was observed.

SourceWiley·JournalCochrane Database of Systematic Reviews·DateOct 4, 2011

New findings validate the accuracy of autism diagnosis in children with Down syndrome

A 16-year study confirms the accuracy of autism diagnosis in children with Down syndrome using the Diagnostic and Statistical Manual of Mental Disorders (DSM). The research found that clinicians can use the DSM to identify autism spectrum disorders in these individuals, providing them with targeted educational and intervention services.

SourceKennedy Krieger Institute·JournalJournal of Intellectual Disability Research·DateOct 4, 2011

University of Texas Health Science Center: Alzheimer's might be transmissible in similar way as infectious prion diseases

A study by UTHealth suggests that Alzheimer's disease may arise from an infectious process similar to other neurological diseases. Researchers injected brain tissue from a confirmed Alzheimer's patient into mice, which developed plaques and brain alterations typical of the disease.

New study of Glover's Reef challenges whether corals will benefit from Marine Reserves' protection

A recent study of Glover's Reef Marine Reserve in Belize found that coral communities showed no significant improvement despite 10 years of protected status. The research revealed declines in coral cover and abundance of juvenile corals, with macroalgae dominating the reef and impeding coral growth.

Panama REDD: Getting what you pay for

A new report by the Smithsonian Tropical Research Institute identifies gaps in Panama's forest monitoring, making it difficult to track emission reductions from REDD+ activities. The study emphasizes the need for low-cost, verifiable forest monitoring techniques to verify the effectiveness of conservation strategies.

SourceSmithsonian Tropical Research Institute·JournalEnvironmental Research Letters·DateOct 4, 2011

Fishy behaviour

Researchers found that timid fish are more likely to be caught using angling techniques near rocky outcrops or submerged vegetation, while bolder fish are targeted by beach seining. The study's findings suggest that boldness can influence an individual's capture technique and habitat preference.

SourceQueen's University·JournalCanadian Journal of Fisheries and Aquatic Sciences·DateOct 4, 2011

Keeping track of reality

A structural variation in the paracingulate sulcus (PCS) may explain why some people are better at distinguishing real events from imagined ones. Adults with an absent PCS were significantly less accurate on memory tasks, despite their own confidence in their memory abilities.

Combination of MRI techniques identifies recent stroke

A study using MRI techniques has identified patients with recent strokes who can benefit from timely thrombosis treatment. The technique, combining diffusion-weighted imaging (DWI) and fluid-attenuated inversion recovery (FLAIR), enables the pinpointing of the stroke's onset time, which is crucial for determining treatment efficacy.

SourceThe Lancet_DELETED·JournalThe Lancet Neurology·DateOct 4, 2011

Green tea helps mice keep off extra pounds

Obese mice fed green tea supplement gained weight 45% more slowly than control group, suggesting EGCG limits fat absorption and enhances fat use. Green tea did not suppress appetite and a person would need to drink ten cups daily to match study amount.

SourcePenn State·JournalObesity·DateOct 4, 2011

Lungfish provides insight to life on land

Researchers studied lungfish to understand pelvic fin muscle development and its connection to the emergence of hind legs. The team found a transitional mechanism in bony fish that paved the way for tetrapod physiology, highlighting the importance of understanding evolutionary pathways in land adaptation.

SourcePLOS·JournalPLOS Biology·DateOct 4, 2011

Natural compound helps reverse diabetes in mice

Scientists have found that nicotinamide mononucleotide, a naturally occurring compound, can reverse diabetes in mice by improving glucose tolerance and reducing cholesterol levels. The study suggests that this compound may one day be used to treat or prevent type 2 diabetes.

SourceWashU Medicine·JournalCell Metabolism·DateOct 4, 2011

Combination therapy beneficial for head and neck skin carcinomas, UNC study shows

A UNC-led study shows that patients with high-risk non-melanoma skin carcinomas of the head and neck may benefit from concomitant radiotherapy and chemotherapy, achieving better outcomes compared to radiation alone. The study provides preliminary data on the feasibility of combining chemotherapy with radiotherapy.

SourceUniversity of North Carolina Health Care·JournalInternational Journal of Surgery·DateOct 4, 2011

Making the healthy choice the easy choice

The University of Missouri Extension has received a national grant to promote healthy diets and physical activity through two projects: Missouri Farm to Institution Project and Livable Streets. The programs aim to provide tools and support for schools, hospitals, and institutions to serve locally grown produce and educate citizens to a...

Circadian clock may impact organ transplant success

A new study correlating circadian clocks with transplant success found that arteries of mice with dysfunctional internal clocks became diseased within weeks after transplantation. Transplanted blood vessels from healthy mice remained healthy in mutant mice, suggesting optimal organ function may be key to successful transplants.

SourceMedical College of Georgia at Augusta University·JournalProceedings of the National Academy of Sciences·DateOct 4, 2011

Culling can't save the Tasmanian devil

A new study suggests that culling Tasmanian devils cannot control the spread of facial tumour disease and may even increase its transmission. Alternative strategies such as setting up insurance populations, finding genetic resistance, and developing a vaccine are being explored to save the iconic marsupial

SourceWiley·JournalJournal of Applied Ecology·DateOct 4, 2011

Yale researchers reveal 1 reason why fat cells fail

A Yale research team discovered a mechanism that enables fat cells to expand when excess metabolic energy is present, helping them store and use fatty acids efficiently. This process is crucial for maintaining cellular balance and preventing the breakdown of fat storage capacity in obese individuals.

SourceYale University·JournalCell Metabolism·DateOct 4, 2011

A shot of cortisone stops traumatic stress

A study published in European Neuropsychopharmacology found that administering a single dose of cortisone up to six hours after traumatic event reduces the likelihood of developing PTSD by 60%. This natural approach may circumvent the harm caused by other pharmaceuticals and prevent the consolidation of traumatic memories.

SourceAmerican Friends of Tel Aviv University·JournalEuropean Neuropsychopharmacology·DateOct 4, 2011

TGen/Virginia G. Piper Cancer Center publish results of new drug for pancreatic cancer patients

A new drug combination of gemcitabine and nab-paclitaxel has shown impressive results in a clinical trial for patients with advanced pancreatic cancer. The study, led by Dr. Daniel Von Hoff, found that about half the patients showed reductions in tumor size and about 50 percent lived at least a year.

SourceThe Translational Genomics Research Institute·JournalJournal of Clinical Oncology·DateOct 4, 2011

Women with PCOS have family heart disease link

A new study from the University of Adelaide reveals a strong link between cardiovascular disease in both parents and the risk of polycystic ovary syndrome (PCOS) in their daughters. Mothers with PCOS are more likely to have high blood pressure, while fathers are at a higher risk for heart disease and stroke.

SourceUniversity of Adelaide·JournalPLOS ONE·DateOct 4, 2011