Prospective Cohort Study to Unravel Microbiome-Sarcopenia Link in Liver Cirrhosis Patients
Background
Protein-energy malnutrition (PEM) affects 65-90% of patients with liver cirrhosis, often progressing to sarcopenia in 30-70%. Both malnutrition and sarcopenia significantly increase complications and mortality risk in this population. The gut microbiome is consistently altered in cirrhosis, leading to increased gut permeability, bacterial translocation, and systemic inflammation. Given the microbiome's critical role in nutrient uptake and metabolism, it is hypothesized that these microbial dysregulations directly contribute to the development and progression of sarcopenia in cirrhotic patients, representing a key therapeutic target.
Study Design
A prospective controlled cohort study is being conducted to investigate the intricate interrelation of gut microbiome changes and sarcopenia in patients with liver cirrhosis. The study will also evaluate the effect of specific nutritional interventions on the microbiome composition in this patient group. Primary outcomes include the evaluation of muscle mass over 3 months, alongside a decrease in serum levels of microbiota-derived uremic toxins, and a reduction in intestinal permeability and inflammatory markers. This design aims to establish if modulating the gut microbiome via nutritional strategies is a feasible approach.
Why It Matters
Understanding the precise link between the gut microbiome and sarcopenia in liver cirrhosis could revolutionize patient management. If this study confirms the hypothesis, it would provide a strong rationale for targeting the microbiome through nutritional interventions to prevent or reverse sarcopenia, a major driver of morbidity and mortality. This research could lead to novel, evidence-based dietary protocols or probiotic/prebiotic strategies specifically designed to modulate the gut environment, thereby improving muscle mass and overall prognosis for cirrhotic patients. Personalized nutritional interventions based on microbiome profiles could become a standard of care.
microbiome
sarcopenia
liver-cirrhosis
malnutrition
nutritional-intervention
cohort-study