Hepatic function and the cardiometabolic syndrome.

Area of Science:

• Metabolic physiology
• Hepatology
• Endocrinology

Background:

• The liver's role in glucose homeostasis and insulin resistance is often underestimated due to investigation complexities.
• The liver's unique anatomical position makes it highly sensitive to hormonal, neural, and nutritional factors.

Purpose of the Study:

• To elucidate the liver's central role in regulating glucose homeostasis and its susceptibility to insulin resistance.
• To explore the impact of diet, gut permeability, and visceral adipose tissue on liver function and metabolic health.

Main Methods:

• Review of experimental and clinical research on liver function and insulin sensitivity.
• Analysis of nutrient absorption, gut microbiota, and visceral adipose tissue interactions with the liver.
• Examination of molecular mechanisms including inflammation, oxidative stress, and lipid accumulation in hepatocytes.

Main Results:

• Dietary components (fructose, lipids) and increased intestinal permeability (leaky gut) promote hepatic inflammation, oxidative stress, and lipid accumulation (fatty liver).
• Visceral adipose tissue contributes inflammatory substances and oxidative stress, exacerbating liver damage and contributing to cardiometabolic syndrome.
• Hepatic insulin resistance and steatosis are linked to leaky gut, suggesting it as a key causal factor.

Conclusions:

• The liver is a primary driver of insulin resistance and cardiometabolic syndrome, influenced by diet and gut health.
• Treatments targeting the liver, such as metformin, statins, and vitamin D, are important.
• Restoring gut barrier function represents a promising therapeutic strategy for hepatic insulin resistance and fatty liver disease.