Irisin and adropin decrease in preobese or obese individuals with nonalcoholic fatty liver disease

Area of Science:

• Metabolic disease research
• Hormone function in obesity
• Liver health and disease

Background:

• Nonalcoholic fatty liver disease (NAFLD) is a metabolic condition frequently associated with obesity.
• Irisin and adropin are hormones implicated in metabolic regulation.

Purpose of the Study:

• To investigate serum irisin and adropin levels in preobese or obese adults with varying degrees of NAFLD.
• To explore the relationship between these hormone levels and NAFLD severity.

Main Methods:

• Study included 89 participants categorized into four groups: normal-weight controls, preobese/obese without NAFLD, and preobese/obese with Grade 1 or Grade 2-3 NAFLD.
• Abdominal ultrasonography, anthropometric assessments, and serum hormone level determination via ELISA were performed.

Main Results:

• Serum adropin and irisin levels were significantly lower in NAFLD patients (Grades 1-3) compared to normal-weight controls.
• Hormone levels did not differ significantly between NAFLD severity groups (Grade 1 vs. Grades 2-3).
• Elevated atherogenic index and red cell distribution width were observed in NAFLD groups.

Conclusions:

• Decreased serum adropin and irisin levels are associated with the presence of NAFLD in preobese and obese individuals.
• These hormonal changes may contribute to the development and worsening of NAFLD.
• Further research is warranted to elucidate the precise mechanisms involved.