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Science News for December 9, 2007


Scientists discover new role for miRNA in leukemia

A new study reveals microRNAs can directly control a protein's function, preventing immature blood cells from maturing and contributing to the development of blast-crisis CML. Altering microRNA levels may represent a potential therapeutic strategy for CML patients who don't respond to targeted agents.

SourceOhio State University·DateDec 9, 2007

Neurons in the frontal lobe may be responsible for rational decision-making

Research suggests that neurons in the frontal lobe encode economic value in a 'menu invariant' way, enabling transitive preferences. This finding provides a key insight into the neural circuits underlying decision-making and may shed light on choice deficits associated with frontal lobe damage.

SourceHarvard Medical School·JournalNature Neuroscience·DateDec 9, 2007
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In fruit flies, homosexuality is biological but not hard-wired

A team of neurobiologists has discovered a gene controlling fruit fly homosexuality and found it can be turned on and off within hours using genetic manipulation or drugs. The research provides insight into the biological basis of sexual orientation and may one day enable the domestication of insects like fruit flies for useful purposes.

SourceUniversity of Illinois Chicago·JournalNature Neuroscience·DateDec 9, 2007

Complete response with oblimersen combination improves survival of CLL patients

A Phase III clinical trial shows that patients with relapsed CLL who achieve complete response with oblimersen combination therapy live significantly longer than those treated with chemotherapy alone. The median survival time for oblimersen-treated patients is estimated to exceed 49 months, whereas it was 35 months for those on F/C alone.

SourceUniversity of Texas M. D. Anderson Cancer Center·DateDec 9, 2007

Vaccine improves event-free survival for leukemia patients

A peptide vaccine for leukemia improved event-free survival by 8.7 months compared to non-responders, with 36% of responders experiencing complete cytogenetic remission. The vaccine targets cancer cells and induces a specific immune response in patients with HLA-A2

SourceUniversity of Texas M. D. Anderson Cancer Center·DateDec 9, 2007

Dasatinib, Nilotinib show strong early results as frontline therapy for chronic myelogenous leukemia

Two drugs, dasatinib and nilotinib, are showing promising results as frontline therapy for newly diagnosed CML patients with high complete cytogenetic response rates of approximately 90% at 6 months. The treatments target a greater variety of genetic variations than imatinib, which has increased the 5-year survival rate for CML patient...

SourceUniversity of Texas M. D. Anderson Cancer Center·DateDec 9, 2007
Creality K1 Max 3D Printer

Creality K1 Max 3D Printer rapidly prototypes brackets, adapters, and fixtures for instruments and classroom demonstrations at large build volume.

In search for water on Mars, clues from Antarctica

Researchers compare images of Mars gullies to McMurdo Dry Valleys' saltwater flows, finding similarities that suggest liquid water on Mars. The study bolsters the notion of microbial life on Mars, as bacteria thrive in the Antarctic landscape's similar conditions.

SourceOhio State University·DateDec 9, 2007

Gleevec, the targeted cancer pill, delivers more good news to patients

Researchers announced new data showing Gleevec improves outcomes for children with Ph+ ALL, reversing the poor prognosis, and prevents disease progression in adults with CML. Continuous treatment with Gleevec has shown a declining rate of relapse over time, with no patients progressing to advanced phase in CML.

SourceOregon Health & Science University·DateDec 9, 2007

Current melting of Greenland's ice mimicks 1920s-1940s event

Researchers found that Greenland's glaciers responded similarly to the 1920s warming event, with the Kangerdlugssuaq Glacier losing nearly a mile of ice in 1932. This parallels recent changes, increasing alarm about the island's ice fields and sea level rise.

SourceOhio State University·DateDec 9, 2007
Rigol DP832 Triple-Output Bench Power Supply

Rigol DP832 Triple-Output Bench Power Supply powers sensors, microcontrollers, and test circuits with programmable rails and stable outputs.

Smaller storms drop larger overall rainfall in hurricane season

Researchers found that smaller tropical storms and depressions contribute significantly to cumulative rainfall, with over half of the seasonal rainfall attributed to these weaker systems. In contrast, major hurricanes produce heavy rainfall on any given day but are not the primary storm type relieving drought in the region.

SourceNASA/Goddard Space Flight Center·JournalGeophysical Research Letters·DateDec 9, 2007