Abstract
Mitochondrial mass (MM) is considered an essential parameter of the immune system, but the association of MM with incomplete immune reconstitution (IIR) in people living with HIV (PLWH) remains unclear. Here, we tested 2148 blood samples from 1999 PLWH by flow cytometry in China between August 2021 and February 2022. A novel U-shaped relationship, determined by multivariable smooth curve fitting and piecewise-linear mixed-effect model, was observed between the ratio of MM to SD (MM/SD) and IIR, with a threshold cutoff of 2.8. For MM/SD <2.8, per SD increment of MM was independently associated with 30%, 30%, 20%, and 20% decreased risk of CD4+ T-cell counts <500 cells/μL after 4 years of treatment and CD4+ T-cell counts <350 cells/μL after 4, 5, 6 years of treatment, respectively. Our study suggested that increasing MM may indicate the low risk of IIR for PLWH with MM/SD <2.8.
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