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Memory's master switch

A study published in Neuron reveals that GABA, a natural molecule in the brain, is responsible for regulating synaptic connections and facilitating the formation of new memories. The research demonstrates that variations in local GABA levels near individual synapses determine synaptic strength and heterogeneity.

Schizophrenia mouse model should improve understanding and treatment of the disorder

Researchers have developed a mouse model that exhibits schizophrenia-like behavior, allowing for better understanding and potential treatments. The mouse's impaired short-term memory and increased movement are similar to those seen in human patients with schizophrenia, providing a valuable tool for studying the disorder.

SourceMedical College of Georgia at Augusta University·JournalProceedings of the National Academy of Sciences·DateDec 28, 2009

Schizophrenia linked to dysfunction in molecular brain pathway activated by marijuana

A University of Pittsburgh School of Medicine study found that individuals with schizophrenia have lower levels of a key neurotransmitter GABA, which is impaired by the activation of the cannabinoid 1 receptor activated by marijuana. This impairment worsens cognitive symptoms and may lead to new drug targets for improved treatments.

SourceUniversity of Pittsburgh Schools of the Health Sciences·JournalArchives of General Psychiatry·DateJul 7, 2008

The GABAA receptor -- a memory bane?

The GABAA receptor's inhibition of learning has been reversed by its overexpression, revealing a complex relationship between neurotransmitters and cognitive processes. Fruit flies exhibit impaired learning at high temperatures but retain memory, suggesting that the receptor's absence may enhance neural plasticity.

SourceBaylor College of Medicine·JournalNeuron·DateDec 19, 2007

Nervous inhibitions

Scientists find VIAAT enables joint storage of GABA and glycine in vesicles, refuting dogma that GABA release is crucial for nerve cell growth. VIAAT mutant mice develop normally despite GABA and glycine release elimination.

SourceMax-Planck-Gesellschaft·JournalNeuron·DateMay 29, 2006

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

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

Convulsions in worms mimic epileptic seizures

A team of researchers led by Guy A. Caldwell found that worms with a mutated LIS1 gene experience convulsions similar to those in humans with lissencephaly, a rare birth defect. The study reveals the mutated protein's impact on neuronal trafficking and neurotransmitter release, providing insights into the complexities of epilepsy.

SourceHoward Hughes Medical Institute·JournalHuman Molecular Genetics·DateSep 1, 2004

GAD2 as a candidate gene for obesity

Researchers found a genetic link between GAD2 variants and obesity. The study suggests that overexpression of the GAD2 gene may increase GABA levels in the hypothalamus, leading to increased orexigenic effects and overeating.

SourcePLOS·JournalPLOS Biology·DateNov 3, 2003

Researchers find promising new target for anxiety-reducing drugs

Scientists have identified a potential new target in the brain for anxiety-reducing medications, which may provide less disruptive alternatives to existing sedatives. By inhibiting a specific enzyme protein kinase C (PKC-epsilon), researchers hope to develop new treatments that can modulate GABA function without addictive side effects.

SourceUniversity of North Carolina at Chapel Hill·JournalJournal of Clinical Investigation·DateOct 2, 2002

Immunotherapy treatment shows dramatic results for rare neurological disorder

Researchers have found that immunoglobulin therapy significantly reduces symptoms of Stiff Person Syndrome (SPS), including stiffness and spasm, and improves mobility. The study showed a statistically significant decrease in symptoms for patients treated with IVIg, with 11 out of 14 patients becoming less stiff and more mobile.

SourceNIH/National Institute of Neurological Disorders and Stroke·JournalNew England Journal of Medicine·DateDec 26, 2001