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Science News for February 2, 2005


New neurons born in adult rat cortex

Scientists at NIMH have discovered newborn neurons in adult rat cortex that communicate via GABA, suggesting potential new treatments for depression and anxiety. The discovery adds to the scientific debate over adult neurogenesis and has implications for understanding brain disorders such as Alzheimer's and schizophrenia.

SourceNIH/National Institute of Mental Health·JournalJournal of Cell Biology·DateFeb 2, 2005

New component of the 'brakes' on nerve regeneration found

Researchers have found a new protein, TAJ/TROY, that acts as part of the receptor complex in neurons responding to growth-inhibitory molecules. This discovery may provide insights into designing therapeutic strategies to block myelin inhibition and promote regeneration of spinal cord or brain tissue after injury.

SourceCell Press·JournalNeuron·DateFeb 2, 2005

Key trigger of opioid withdrawal symptoms found

A study led by Elena Bagley and Macdonald Christie found that a transporter molecule for the neurotransmitter GABA is responsible for opioid withdrawal symptoms. Inhibiting this molecule or protein kinase A eliminates hyperexcitability in PAG neurons.

SourceCell Press·JournalNeuron·DateFeb 2, 2005

MRI 'excellent choice' for overcoming challenges of diagnosing pregnant women with abdominal pain

A study published in the American Journal of Roentgenology found that MRI is an excellent choice for diagnosing pregnant women with abdominal pain due to its high accuracy and safety from radiation. The study analyzed 29 patients and diagnosed 14 different causes of abdominal pain, including appendicitis and ovarian cysts.

SourceAmerican College of Radiology·JournalAmerican Journal of Roentgenology·DateFeb 2, 2005