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Science News Archive 2008 - Page 55


Page 55 of 240

Drinking alcohol associated with smaller brain volume

Drinking more than moderate amounts of alcohol is associated with reduced total brain volume and larger white matter lesions. This finding suggests that heavy drinking may not have the protective effect on brain health previously thought, contrary to its effects on cardiovascular disease risk.

SourceJAMA Network·JournalArchives of Neurology·DateOct 13, 2008

Working through the menopause

The University of Nottingham is conducting a study to understand women's experiences working through menopause, with the goal of providing useful information for women, employers, and doctors. The research aims to address the significant gap in understanding the effects of menopause on women's working life.

Astrocytes and synaptic plasticity

Astrocytes fine-tune synaptic plasticity by secreting and re-releasing neurotrophic factor BDNF, influencing long-term potentiation (LTP) and depression (LTD). This process affects neurons' ability to communicate with each other, impacting learning and memory.

SourceRockefeller University Press·JournalJournal of Cell Biology·DateOct 13, 2008

Does hypertriglyceridemia aggravate the episodes of severe acute pancreatitis?

A study found that hypertriglyceridemia is independently associated with the severity of acute pancreatitis and leads to systemic complications. High triglyceride levels were linked to increased incidence of admission hypocalcemia, renal failure, shock, infection, and mortality in patients with severe acute pancreatitis.

SourceWorld Journal of Gastroenterology·JournalWorld Journal of Gastroenterology·DateOct 13, 2008

Seeds of optimism in Iraq's mental health provision

Training programs in Iraq have led to the establishment of child mental health departments, benefiting from international collaboration, and innovative public awareness campaigns using television and radio. Despite challenges, there is a growing need for child psychiatrists, but progress is being made, with increased support for educat...

New properties of skin stem cells

Scientists at Karolinska Institutet discovered skin stem cells can divide actively and transport themselves through skin tissue, contradicting previous assumptions. The study's findings also suggest a link between hedgehog signaling and the development of basal cell carcinoma, the most common form of skin cancer.

SourceKarolinska Institutet·JournalNature Genetics·DateOct 13, 2008

Strong elasticity size effects in ZnO nanowires

Researchers at Northwestern University resolved discrepancies in ZnO nanowire elasticity by performing experiments and computational studies. The findings reveal that the elastic stiffness of ZnO nanowires monotonically increases as their diameter decreases, with atomic level changes attributed to surface reconstruction.

SourceNorthwestern University·JournalNano Letters·DateOct 13, 2008

Researchers write protein nanoarrays using a fountain pen and electric fields

A team of researchers at Northwestern University has successfully written nanoscale protein arrays using a tool called the nanofountain probe (NFP), which rapidly deploys proteins with unprecedented resolution. The technique utilizes electric fields to control protein transport, allowing for efficient and high-resolution patterning.

SourceNorthwestern University·JournalProceedings of the National Academy of Sciences·DateOct 13, 2008

Which way 'out of Africa'?

Researchers find fossil river channels in Libya with a distinctly volcanic signature, supporting the theory that monsoon rains fueled rivers to the Mediterranean. The discovery provides an alternative route for early human migrations out of sub-Saharan Africa.

SourceUniversity of Bristol·JournalProceedings of the National Academy of Sciences·DateOct 13, 2008

Lack of vitamin D linked to Parkinson's disease

A new study from Emory University School of Medicine found that 55 percent of Parkinson's disease patients had insufficient levels of vitamin D. The study also showed a higher fraction of patients with the lowest levels of vitamin D, described as deficiency, in the Parkinson's group compared to Alzheimer's and healthy groups.

SourceEmory Health Sciences·JournalArchives of Neurology·DateOct 13, 2008

Best treatment determined for childhood eye problem

Convergence insufficiency affects children's ability to focus and align their eyes while viewing objects up close, impacting reading and concentration. Researchers discovered that structured therapy sessions in a doctor's office and reinforcement eye exercises at home improve vision faster than home-based therapies alone. The study, sp...

SourceMayo Clinic·JournalArchives of Ophthalmology·DateOct 13, 2008

Nanotechnology boosts war on superbugs

Researchers have developed ultra-sensitive probes to investigate vancomycin's working mechanisms, paving the way for more effective new drugs. By detecting surface stress on bacteria, scientists can identify the disruption of cell walls and potentially develop more powerful antibiotics.

SourceUniversity College London·JournalNature Nanotechnology·DateOct 12, 2008

Pectin power

Researchers found that pectin, a compound in fruits and vegetables, inhibits galectin 3, a protein linked to all stages of cancer progression. This discovery may lead to functional foods with added bioactive pectin and provide evidence for the importance of eating at least 5-a-day.

SourceNorwich BioScience Institutes·JournalThe FASEB Journal·DateOct 12, 2008

Important new hair-loss gene discovered

A study published in Nature Genetics has identified a novel hair-loss gene variant associated with male baldness. The research found that this gene, located on chromosome 20, is inherited from both parents and may account for the similarity in cranial hair growth between father and son.

SourceUniversity of Bonn·JournalNature Genetics·DateOct 12, 2008