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Abstract #3171

Probing metabolites in antiretroviral and nicotine treated mouse brains using MRS and CEST-MRI

Gabriel Gauthier1, Aditya Bade1, and Yutong Liu1
1University of Nebraska Medical Center, Omaha, NE, United States

Synopsis

Keywords: CEST & MT, CEST & MT, MRI, MRS, HIV, Antiretroviral, nicotine, glutamate, myo-inositol, cholineTo better understand synergistic effects of antiretroviral drugs (ARV) and nicotine on neuroimmune functions, we observed drug-associated metabolites in mice utilizing CEST MRI and MRS. Increased CEST signal was found at 3.5 ppm suggesting increased glutamate in mice treated with nicotine. MRS results showed increased myo-inositol in both ARV and nicotine treated mice. glutamate is an excitatory neurotransmitter and myo-inositol is a biomarker of glial activation. The imaging results suggested elevated neuronal activation and neuroimmune dysfunction.

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