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Science News for January 22, 2008


Adaptive functional evolution of leptin in cold-adaptive pika family

Researchers propose that pika leptin's adaptive functional evolution may be driven by cold environmental stress, not hypoxia. This discovery has significant implications for understanding small mammals' adaptation to extreme environments and identifying new candidate therapies for human diseases like obesity and diabetes.

SourcePLOS·JournalPLOS ONE·DateJan 22, 2008

DNA sensors found to be an effective artificial nose

Researchers developed DNA sensors that can detect odors in the vapor phase with high specificity. The study demonstrated a previously unreported property of single-stranded DNA molecules, showing they can respond to odor pulses in a sequence-selective manner on solid surfaces.

SourcePLOS·JournalPLOS Biology·DateJan 22, 2008

Disparities among patients with extremity soft-tissue sarcomas

A new study found significant racial and ethnic differences in the treatment and survival of patients with extremity soft-tissue sarcomas. Blacks had lower rates of surgeries that would have saved their arm or leg, higher death rates, and were least likely to receive additional treatments for improved survival.

SourceWiley·JournalCancer·DateJan 22, 2008

Debate over safety of gene therapy trials focuses on issue of informed consent

A series of commentaries in Human Gene Therapy explores key controversies surrounding patient recruitment and trial management in gene therapy trials. The authors discuss the challenges of patients comprehending lengthy and technical study descriptions and consent forms, and propose innovative strategies for improving informed consent.

Study raises questions about diagnosis, medical treatment of ADHD

A new UCLA study found that only half of children diagnosed with ADHD exhibit cognitive defects, challenging the common method for diagnosing the disorder. The research also suggested that medication is not always effective in treating ADHD, highlighting the need for alternative approaches to address long-term problems.

SourceUniversity of California - Los Angeles·JournalJournal of the American Academy of Child & Adolescent Psychiatry·DateJan 22, 2008

QUT researcher discovers Maya mask splendor

A Queensland University of Technology researcher has discovered two new pigments at the famous Maya archaeological site in Honduras that would have had a lustrous effect. The pigments, including green and mica, were found on stucco masks and revealed that the Rosalila temple was built using over 15 layers of paint and stucco.

SourceQueensland University of Technology·JournalApplied Spectroscopy·DateJan 22, 2008

Mercury in color!

MESSENGER's Wide Angle Camera captures high-resolution color views of Mercury, showcasing subtle variations indicative of different rock types and mineral compositions. The images provide valuable information for understanding Mercury's formation and evolution.

A good fight may keep you and your marriage healthy

A University of Michigan study found that couples who express their anger and resolve conflicts tend to live longer than those who suppress their emotions. Researchers analyzed 192 couples over 17 years and found that those who both suppressed their anger had a higher mortality rate, with twice as many deaths compared to other groups.

SourceUniversity of Michigan·JournalJournal of Family Communication·DateJan 22, 2008

Zanzibar study paves way for mass co-delivery of 3 antiparasitic drugs

A new study in Zanzibar has shown the safety of delivering three antiparasitic drugs simultaneously to tackle three diseases. The co-administration of ivermectin, albendazole, and praziquantel was found to be safe and effective in reducing distribution costs and increasing community participation.

SourcePLOS·JournalPLOS Neglected Tropical Diseases·DateJan 22, 2008