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Science News Archive 2004 - Page 43


Page 43 of 135

A bacterial cause of Crohn's disease?

A study finds that 50% of patients with Crohn's disease have viable MAP in their blood, suggesting a systemic infection. The findings raise questions about the role of MAP in IBD and highlight the need for further research to clarify its significance.

SourceThe Lancet_DELETED·JournalThe Lancet·DateSep 16, 2004

Food study finds diets get healthier over time

A new study suggests that most people's diets get healthier from childhood to young adulthood. Adults tend to consume more fruit and vegetables and less fat and sugar compared to their child years. However, many people perceive barriers to healthy eating, such as lack of time and work patterns.

SourceNewcastle University·JournalAppetite·DateSep 16, 2004

Humans not irrational, just wary

Researchers developed a new trust model to interpret subjects' performance in a simple task. The model factors in doubt and found that many students expressed doubt despite being told it was unlikely. This challenges the assumption that humans are irrational when doubting instructions.

Glass research earns Lehigh a coveted NSF award

The Lehigh International Materials Institute (IMI) will receive $3.25 million to develop new glass functionalities and foster global collaboration. The grant aims to revitalize the worldwide glass research community and educate a new generation of experts, addressing concerns about the US losing its lead in the field.

Venn diagram tactics to vet complex disease

A study using Venn diagram tactics categorizes mutation types in cells from different patients, identifying a novel cause of lethal neonatal mitochondrial complex I deficiency. The authors demonstrate the technique's strength by pinpointing mutations in the NDUFS6 gene, a previously unknown contributor to this disease.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateSep 15, 2004

JCI table of contents September 15, 2004

Researchers develop methodology to efficiently pinpoint mutations in mitochondrial respiratory chain, identifying new cause of lethal neonatal disease. The technique uses cell-fusion experiments and bioinformatics analyses to categorize mutation types, revealing complex genetic backgrounds.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateSep 15, 2004

A one-two punch for tumors

Researchers found that combining histone deacetylase inhibitors with anti-angiogenesis drugs reduced tumor growth in mice by up to 85% and controlled new blood vessel formation by 60%. This combination therapy may provide a greater impact on cancer development than using the drugs alone.

SourceJohns Hopkins Medicine·JournalCancer Research·DateSep 15, 2004

Picking prostanoids to provide protection

Researchers found that prostacyclin (PGI) protects against atherosclerosis, while thromboxane A2 (TXA2) promotes its development. TP antagonists and molecules with PG-like activity may aid in atherosclerosis prevention, aligning with previous work on low-dose aspirin therapy.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateSep 15, 2004

Brain has center for detecting sound motion

Researchers identified a brain region that processes sound location and motion, with impaired function leading to 'cortical motion deafness'. The study provides evidence of an auditory motion module within the right posterior superior temporal gyrus.

SourceCell Press·JournalNeuron·DateSep 15, 2004

The machinery of forgetting fears

Researchers found that the amygdala is involved in both fear acquisition and unlearning, while the ventral medial prefrontal cortex (vmPFC) plays a critical role in retaining extinction learning. The study provides evidence that the mechanisms of extinction learning may be preserved across species.

SourceCell Press·JournalNeuron·DateSep 15, 2004

Carbon nanotube oscillator might weigh a single atom

Researchers at Cornell University have created a tiny oscillator that uses a carbon nanotube to vibrate at radio frequencies, enabling mass sensing and gas detection capabilities. The device is so small that it can potentially weigh individual atoms, offering new possibilities for scientific research and applications.

SourceCornell University·JournalNature·DateSep 15, 2004

Understanding celiac disease

Researchers found that IL15 induces a series of biochemical changes in NKG2D signaling pathway converting CTL cells into Lymphokine-Activated Killer Cells. MICA molecules are present in elevated amounts in celiac patients' intestinal cells, providing a target for immune cell attacks

SourceCell Press·JournalImmunity·DateSep 14, 2004