Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Chronic Morphine Treatment and Antiretroviral Therapy Exacerbate HIV-Distal Sensory Peripheral Neuropathy and Induce Distinct Microbial Alterations in the HIV Tg26 Mouse Model.

Version 1 : Received: 7 December 2023 / Approved: 7 December 2023 / Online: 7 December 2023 (11:24:27 CET)

A peer-reviewed article of this Preprint also exists.

Antoine, D.; Chupikova, I.; Jalodia, R.; Singh, P.K.; Roy, S. Chronic Morphine Treatment and Antiretroviral Therapy Exacerbate HIV-Distal Sensory Peripheral Neuropathy and Induce Distinct Microbial Alterations in the HIV Tg26 Mouse Model. Int. J. Mol. Sci. 2024, 25, 1569. Antoine, D.; Chupikova, I.; Jalodia, R.; Singh, P.K.; Roy, S. Chronic Morphine Treatment and Antiretroviral Therapy Exacerbate HIV-Distal Sensory Peripheral Neuropathy and Induce Distinct Microbial Alterations in the HIV Tg26 Mouse Model. Int. J. Mol. Sci. 2024, 25, 1569.

Abstract

Distal Sensory Peripheral Neuropathy (DSP) is a common complication in HIV-infected individ-uals, leading to chronic pain and reduced quality of life. Despite antiretroviral therapy (ART), DSP persists, often prompting the use of opioid analgesics, which can paradoxically worsen symptoms through opioid-induced microbial dysbiosis. This study employs the HIV Tg26 mouse model to investigate HIV-DSP development and assess gut microbiome changes in response to chronic morphine treatment and ART using 16s rRNA sequencing. Our results reveal that chronic morphine and ART exacerbate HIV-DSP in Tg26 mice, primarily through mechanical pain path-ways. As the gut microbiome may be involved in chronic pain persistence, microbiome analysis indicated distinct bacterial community changes between WT and Tg26 mice as well as morphine and ART-induced microbial changes in the Tg26 mice. This study reveals the Tg26 mice model to be a relevant system that can help elucidate the pathogenic mechanisms of opioid and ART-induced exacerbation of HIV-associated pain. Our results shed light on the intricate inter-play between HIV infection, ART, opioid use, and the gut microbiome in chronic pain development. They hold implications for understanding the mechanisms underlying HIV-associated pain and microbial dysbiosis, with potential for future research focused on prevention and treatment strategies.

Keywords

HIV-associated pain; neuropathy; opioid use; antiretroviral therapy; gut dysbiosis; Tg26 mouse model

Subject

Biology and Life Sciences, Neuroscience and Neurology

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