Metabolomic profiling can predict which humans will develop liver dysfunction when deprived of dietary choline

Area of Science:

• Nutritional biochemistry
• Metabolomics
• Human physiology

Background:

• Choline is an essential nutrient vital for liver and muscle function.
• Genetic variations can influence susceptibility to choline deficiency-induced organ dysfunction.
• Metabolic inefficiencies may underlie this altered risk.

Purpose of the Study:

• To determine if baseline plasma metabolomic profiling can predict the development of liver dysfunction upon choline deprivation.
• To investigate the relationship between baseline metabolic profiles and choline deficiency-induced organ dysfunction.

Main Methods:

• Fifty-three participants underwent a controlled choline depletion diet.
• Plasma samples were collected at baseline, during depletion, and after repletion.
• Targeted and nontargeted metabolomic profiling was performed on plasma.
• Liver fat accumulation was assessed using magnetic resonance spectroscopy.

Main Results:

• Metabolomic profiling correlated highly with targeted biochemical analyses.
• Choline depletion led to detectable changes in plasma small molecule concentrations.
• Baseline metabolomic profiles accurately predicted which participants would develop liver dysfunction.

Conclusions:

• Plasma metabolomic profiles obtained during a choline-adequate diet can predict susceptibility to choline deficiency-induced liver dysfunction.
• Metabolomic profiling offers a potential tool for identifying at-risk individuals.
• Understanding metabolic variations is key to predicting organ dysfunction risk.