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Science News Archive 2006 - Page 10


Page 10 of 178

Infectious disease researchers develop basis for experimental melanoma treatment

Researchers discovered a potential strategy for treating metastatic melanoma by combining an antibody with radiation, leveraging insights from studying a fungus that causes infection in people with AIDS. The treatment approach shows promise in inhibiting tumor growth and inducing regression in mice with small melanoma tumors.

SourceNIH/National Institute of Allergy and Infectious Diseases·JournalProceedings of the National Academy of Sciences·DateDec 7, 2006

Smoking worsens knee osteoarthritis

Men with knee osteoarthritis who smoke experience greater cartilage loss and more severe pain than non-smokers. Smoking is a potentially modifiable risk factor for worsening knee osteoarthritis.

SourceMayo Clinic·JournalAnnals of the Rheumatic Diseases·DateDec 7, 2006

JCI table of contents: December 7, 2006

Researchers discovered that changes in expression of one component of the TGF-beta receptor, T-beta-RIII, might provide a mechanism for the distinct effects of TGF-beta at different stages of breast cancer. Additionally, analysis of RB functionality could help clinicians determine the most effective therapy for their patients.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateDec 7, 2006

Planning for surge of disaster victims? Discharge the healthiest from every hospital, experts advise

A nationwide panel recommends ranking hospitalized patients by their risk level and assigning a score-based system to make decisions about discharging or transferring patients in emergency situations. This approach could safely empty 70% of hospital beds within 72 hours, improving resource allocation and patient care during disasters.

SourceJohns Hopkins Medicine·JournalThe Lancet·DateDec 6, 2006

Origin of inherited pain disorder pinpointed

Researchers pinpointed paroxysmal extreme pain disorder (PEPD) to specific porelike sodium channels in peripheral nerve cells, highlighting the role of such channel disorders in inflammatory pain. Mutations in SCN9A gene were found to be responsible for at least two-thirds of PEPD cases.

SourceCell Press·JournalNeuron·DateDec 6, 2006

Protein's tail may be flu virus's achilles heel

Researchers at Rice University and UT Austin have identified a promising antiviral drug target in the long, flexible tail of the nucleoprotein protein. Minor changes to this region prevent the protein from fulfilling its role in structural columns that transmit viral copies.

SourceRice University·JournalNature·DateDec 6, 2006

All itches not created equal -- Different parts of brain activated depending on cause

Researchers found that different parts of the brain are activated depending on the cause of itching, with allergen-induced itches activating the supplementary motor and posterior parietal areas. Histamine-induced itches, on the other hand, activate a smaller area of the brain, suggesting a compulsion to scratch in those cases.

SourceAmerican Physiological Society·JournalJournal of Neurophysiology·DateDec 6, 2006

Psychologist to study how we put stress into words

A new project led by Dr Padraic Monaghan will investigate the mechanism of language processing that determines stress in words, potentially aiding the treatment of reading difficulties and second language learning. The research may also provide insights into neurological representations of language and recovery following brain injury.

Hotspots or not? Isotopes score one for traditional theory

A recent study in Nature supports the traditional theory of mantle plumes as the source of volcanic islands. Researchers found a close correlation between modeled and observed ratios of uranium-series isotopes across eight island locations, allowing them to estimate changes in temperature, speed, and size of mantle plumes.

SourceBrown University·JournalNature·DateDec 6, 2006

Brown scientists map structure of DNA-doctoring protein complex

Researchers at Brown University have solved the structure of a DNA-protein complex that aids in site-specific recombination, a process that allows mobile DNA to cut into chromosomes. The discovery provides new insights into how this process shapes species over time and its role in spreading antibiotic resistance and certain diseases.

SourceBrown University·JournalMolecular Cell·DateDec 6, 2006

Tracing the formation of long-term memory

A team of researchers from Baylor College of Medicine has found a key component in the formation of long-term memory in fruit flies. The study showed that increased calcium influx into mushroom body neurons parallels the creation of new synapses associated with long-term memory, and can be blocked by specific laboratory techniques.

SourceBaylor College of Medicine·JournalNeuron·DateDec 6, 2006

Elusive rust resistance genes located

Researchers have identified a DNA marker that is 99% effective in flagging the presence of Lr34 and Yr18 rust resistance genes. This breakthrough enables breeders to quickly test seedlings for these genes, allowing them to incorporate durable rust resistance into new wheat varieties.