Impacts of the development of acute-on-chronic liver failure and bacterial infections on β-cell function and glucose homeostasis in patients with liver cirrhosis

Background The pathogenesis involved in glucose metabolism disorders (GMDs) in patients with liver cirrhosis remains unclear. Aims We investigated the effects of acute-on-chronic liver failure (ACLF) development and bacterial infections (BIs) on pancreatic β-cell function and glucose homeostasis in individuals with liver cirrhosis. Methods A retrospective analysis was conducted on 327 patients experiencing acute deterioration of liver cirrhosis. Oral glucose tolerance tests (OGTTs) and OGTT-based β-cell function indices were employed to assess β-cell function and glucose homeostasis. Univariate and multivariate logistic regression analyses were employed to identify GMD-associated risk factors. Results Both the development of ACLF and BIs significantly increased the prevalence of GMDs. Both ACLF and BIs markedly elevated the homeostasis model of assessment 2-insulin resistance (HOMA2-IR). ACLF significantly impaired glucose-stimulated insulin secretion, as evidenced by reduced insulinogenic index (IGI). Patients with GMDs exhibited significantly lower IGI levels than those without GMDs. Independent risk factors associated with GMDs were prothrombin activity (odds ratio [OR]=0.981, 95% confidence interval [CI]: 0.960–0.995), HOMA2-IR (OR=1.749, 95% CI: 1.130–2.707), and IGI (OR=0.963, 95% CI: 0.947–0.978). Conclusions In liver cirrhosis, the onset of ACLF impairs glucose-stimulated insulin secretion from β-cells. Both liver impairment and BIs contribute to increased insulin resistance, ultimately disturbing glucose homeostasis.