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Science News Archive August 2005 - Page 15


Page 15 of 15

3 papers present fresh paths to ponder Akt1 in the heart

Recent studies using transgenic mice have shown that overactive Akt1 can lead to cardiac dysfunction and hypertrophy. In contrast, Akt1 is critical for adaptive angiogenesis in the heart after ischemia. The research highlights the importance of understanding Akt1's role in regulating cardiovascular function.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateAug 1, 2005

A bug's life: Exceptional genomic stability yet rapid protein evolution in a carpenter ant mutualist

A recent study reveals that symbiotic bacteria, such as Blochmannia, exhibit exceptional genomic stability despite rapid protein evolution. Genome sequencing of the black carpenter ant mutualist revealed that all shared genes were completely conserved in both genomes, indicating a striking lack of genetic change over millions of years.

SourceCold Spring Harbor Laboratory·JournalGenome Research·DateAug 1, 2005

Researcher uncovers details of how cancer spreads

A study published in Developmental Cell reveals that connective tissue holding a cancer cell in place degrades, allowing it to spread to other parts of the body. The researchers identified a specific pathway critical for cancer cell activity, which could lead to more effective drug therapies with reduced side effects.

SourceCornell University·JournalDevelopmental Cell·DateAug 1, 2005

Scientists develop nanotech-laser treatment that kills cancer cells without harming healthy tissue

Researchers at Stanford University have developed a nanotech-laser treatment that uses carbon nanotubes to selectively kill cancer cells, bypassing normal body tissue. The technique involves coating the nanotubes with folate molecules to target diseased cells, and shining near-infrared light on them to induce heat and destruction.

SourceStanford University·JournalProceedings of the National Academy of Sciences·DateAug 1, 2005

Wolves' top-down effect

The study found that wolf exclusion led to a 10-fold increase in elk populations, resulting in decreased beaver lodge construction and disappearance of songbirds dependent on willow habitat. The findings support the role of large predators in conservation and restoration strategies.

SourceEcological Society of America·JournalEcology·DateAug 1, 2005