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New Findings On Dopamine Receptor Biology: Implications For Mental Illness

A team of researchers led by Northeastern University professor Richard C. Deth has discovered a link between dopamine receptors and cognition that could open new avenues for the treatment of conditions like schizophrenia and attention deficit/hyperactivity disorder. The findings are published in the May 1999 edition of Molecular Psychiatry.

The breakthrough centers around the brain's folate pathways and the D-4 dopamine receptor, which is thought to play a vital role in human attention and cognition. Deth's group found that dopamine's interaction with the D-4 receptor can cause local increases in the fluidity of nerve membranes which can influence synapse activity critical for normal cognition and attention.

While researchers have long suspected that dopamine and folate contribute to mental illness, they have not been able to show how. Deth's team has demonstrated that D-4 activity uses the folate pathway as a source of single-carbon methyl groups essential to affecting changes in nerve cell membranes. When this process is defective, it might contribute to schizophrenia or other psychiatric disorders.

Researchers from Northeastern University's Department of Pharmaceutical Sciences, the VA Medical Center in Bedford, MA and the University of Tennessee School of Medicine in Memphis contributed to the study.


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Contact: Julie Vianello
j.vianello@stockton-press.co.uk
301-496-6885
Molecular Psychiatry
19-May-1999


Page: 1

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