Herpesvirus may lead to bipolar, depression

An international team of scientists led by Bhupesh Prusty — from the
Department of Microbiology at the University of Würzburg in Germany —
discovered that in the brains of people who lived with bipolar and major
depression, a class of neurons called Purkinje cells was infected with
the herpesvirus HHV-6A.
Purkinje neurons are inhibitory brain cells located in the human cerebellum, which is
the brain area responsible for controlling movement, muscles, balance,
and posture.
However, some research has also tied this brain region to language, cognition, and mood.

Active HHV-6 Infection of Cerebellar Purkinje Cells in Mood Disorders Frontiers in microbiology

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