Electro-acupuncture alleviates adolescent cocaine exposure-enhanced anxiety-like behaviors in adult mice by attenuating the activities of PV interneurons in PrL.

FASEB Journal : Official Publication of the Federation of American Societies for Experimental Biology
Jiaxun NieXiaowei Guan

Abstract

We recently found that adolescent cocaine exposure (ACE) resulted in an enhancement of the γ-aminobutyric acid (GABA) neurotransmitter system in the prelimbic cortex (PrL) of adult mice. Here, we aim to further investigate the role of GABAergic transmission, especially parvalbumin (PV) interneurons within PrL in the development of ACE-induced anxiety-like behavior, and to assess whether and how electro-acupuncture (EA) therapeutically manage the ACE-induced abnormal behaviors in adulthood. ACE mice exhibited the enhanced anxiety-like behaviors in their adulthood, accompanied by increased GABAergic transmission and PV interneurons in PrL. Chemogenetic blocking PV interneurons in PrL alleviated ACE-enhanced anxiety-like behaviors in mice. Importantly, 37-day EA treatments (mixture of 2 Hz/100 Hz, 1 mA, 30 minutes once a day) at the acupoints of Yintang (GV29) and Baihui (GV20) also alleviated ACE-induced anxiety-like behaviors, and rescued ACE-impaired GABAergic neurotransmitter system and PV interneurons in PrL. In parallel, EA treatments further suppressed the activities of pyramidal neurons in PrL, suggesting that EA treatments seem to perform it beneficial effects on the ACE-induced abnormal emotional behaviors by "calming do...Continue Reading

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