Tryptophan degradation is associated with risk-taking propensity in methamphetamine users with treated HIV infection.
Volume: 26
Issue: 5
Year of Publication: 2021
Abstract summary
Few studies have examined neuroimmune pathways that could contribute to impulsivity in people living with HIV who use substances. Eighty-four methamphetamine-using, sexual minority men with an undetectable HIV viral load were administered the Balloon Analogue Risk Task (BART), a behavioral measure of risk-taking propensity. We examined the associations between kynurenine/tryptophan ratio and phenylalanine/tyrosine ratio with BART scores using multiple linear regression. A higher kynurenine/tryptophan ratio was independently associated with greater BART scores (beta = 0.25; 95% CI = 0.05-1.23; p = 0.034). The phenylalanine/tyrosine ratio was not significantly associated with BART scores. Findings support the need for further research to elucidate the neuroimmune mechanisms linking tryptophan degradation with impulsivity to catalyze the development novel pharmacologic treatments for people living with HIV who use methamphetamine.Study Outcome
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Citations : Andres T, Ernst T, Oishi K, Greenstein D, Nakama H, Chang L (2016) Brain Microstructure and Impulsivity Differ between Current and Past Methamphetamine Users J Neuroimmune Pharmacol 11:531–541 doi:10.1007/s11481-016-9675-8Authors : 10
Identifiers
Doi : 10.1007/s13365-020-00841-4SSN : 1538-2443