Abstract
Mitochondrial open reading frame of the 12s ribosomal RNA type-c (MOTS-c) is a novel identified mitochondrial signal transmission peptide that plays an important role in glucose, amino acid and lipid metabolism. In this study, we aimed to investigate the relationship of circulating MOTS-c level with noninvasive scores of fibrosis and the components of metabolic syndrome (MetS) in patients with metabolic dysfunction-associated fatty liver disease (MAFLD). This was a single-center cross-sectional study, and the participants were divided into two groups based on their liver ultrasound results: the fatty liver group and the healthy control group. The MOTS-c level was measured by the ELISA method. Non-alcoholic fatty liver disease fibrosis score (NFS) and fibrosis 4 (FIB-4) were used to determine the level of liver fibrosis. Statistical analyses were performed using Statistical Package for Social Science 15.0 package program. One hundred fifty patients (male, n=57) with MAFLD [median age 41.0 (14) years] and 84 healthy controls (male, n=34) [median age 36.0 (22) years] were included in this study. Patients with MAFLD had significantly lower MOTS-c levels than the healthy controls (p=0.009). The MOTS-c level was significantly lower in subjects with MetS (n=48) compared to those without MetS (n=186) (p=0.01). In the total population (n=234), MOTS-c levels negatively correlated with the presence of MAFLD, NFS, FIB-4, and components of MetS. Individuals diagnosed with MetS and MAFLD tend to have lower levels of MOTS-c. Additionally, these lower levels are inversely correlated with both the components of MetS and noninvasive fibrosis scores. MAFLD negatively correlated to the MetS components and noninvasive scores of fibrosis.
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