{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,18]],"date-time":"2026-07-18T03:22:26Z","timestamp":1784344946867,"version":"3.55.0"},"reference-count":30,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2024,11,22]],"date-time":"2024-11-22T00:00:00Z","timestamp":1732233600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["frontiersin.org"],"crossmark-restriction":true},"short-container-title":["Front. Immunol."],"abstract":"<jats:sec><jats:title>Introduction<\/jats:title><jats:p>Mitochondrial membrane potential (MMP) and mitochondrial mass (MM) affect mitochondrial function and lymphocyte activation, but few studies on HBV infection exist. This study aimed to investigate the regulatory mechanism of mitochondrial dysfunction during HBV infection and its clinical significance by analyzing the alterations of MM and MMP<jats:sup>low<\/jats:sup> in peripheral blood immune cells.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>The study enrolled 90 participants, including healthy volunteers(HC) and patients with HBV infection, HBV patients were divided into chronic hepatitis B patients (CHB) and liver cirrhosis (LC) according to the study, and CHB was also divided into an inflammation group and a non-inflammation group. Flow cytometry was used to analyze the changes of MM and MMP<jats:sup>low<\/jats:sup> in peripheral blood immune cells. These analyses were correlated with the presence of CHB and LC and indexes related to liver inflammation.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>The study revealed significant variations in the percentage of MMP<jats:sup>low<\/jats:sup> and MM of CD8<jats:sup>+<\/jats:sup>T cells associated with the progression of the disease. The MMP<jats:sup>low<\/jats:sup> percentage of CD8<jats:sup>+<\/jats:sup>T cells in the LC group exhibited a notable decrease compared to the HC group and CHB groups. Moreover, MMP<jats:sup>low<\/jats:sup> of CD8<jats:sup>+<\/jats:sup>T cells demonstrated potential in distinguishing CHB and LC (AUC=0.7341, P=0.0032). Furthermore, in exploring the link between mitochondrial function of immune cells and liver inflammation, the study found a negative correlation between the MMP<jats:sup>low<\/jats:sup> ratio of CD4<jats:sup>+<\/jats:sup>T and CD8<jats:sup>+<\/jats:sup>T cells and AST (p=0.0039 and P=0.0070, r=-0.4405 and r=-0.4146), while the MM of CD8<jats:sup>+<\/jats:sup>T cells displayed a positive correlation with AST (p=0.0013, r=0.4865). In CHB patients with normal ALT but liver inflammation detected on B-scan ultrasonography, a significant decrease was observed in the MMP<jats:sup>low<\/jats:sup> percentage of CD8<jats:sup>+<\/jats:sup>T (66.13 \u00b1 14.27), CD56<jats:sup>+<\/jats:sup>NK(57.77 \u00b1 17.40) and CD4<jats:sup>-<\/jats:sup>CD8<jats:sup>-<\/jats:sup>T (61.98 \u00b1 15.98) cells. Furthermore, it was also found that the percentage of MMP<jats:sup>low<\/jats:sup> in CD4<jats:sup>-<\/jats:sup>CD8<jats:sup>-<\/jats:sup>T cells could serve as an indicator for early liver inflammation and injury (AUC=0.8408, P=0.0052).<\/jats:p><\/jats:sec><jats:sec><jats:title>Discussion<\/jats:title><jats:p>In this study, we conducted a systematic analysis of the percentage of lymphocyte MMP<jats:sup>low<\/jats:sup> and MM in various stages of HBV infection. Our findings revealed a correlation between MMP<jats:sup>low<\/jats:sup> and MM and early liver inflammation, as well as the progression of the infection. This study marked the first demonstration of the clinical diagnostic value of MMP<jats:sup>low<\/jats:sup> and MM in HBV infection. Furthermore, this was the first study to discuss the mitochondria of lymphocytes and liver inflammation in HBV infection. It enhanced the understanding of the role of T cells in liver inflammation, and elucidated potential markers for the early detection of liver injury and clinical cirrhosis.<\/jats:p><\/jats:sec>","DOI":"10.3389\/fimmu.2024.1477646","type":"journal-article","created":{"date-parts":[[2024,11,22]],"date-time":"2024-11-22T06:40:15Z","timestamp":1732257615000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":12,"title":["Altered mitochondrial mass and low mitochondrial membrane potential of immune cells in patients with HBV infection and correlation with liver 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