Overview
Metabolic dysfunction-associated steatotic liver disease (MASLD) encompasses conditions characterized by hepatic steatosis often linked to metabolic disturbances, including choline deficiency syndrome (CDS) influenced by estrogen regulation of PEMT activity 1.Diagnosis
Elevated liver enzymes, particularly ALT and AST 3.
Presence of conjugated bilirubin in blood tests 3.
Imaging studies (ultrasound, MRI) showing hepatic steatosis 3.
Genetic testing for PEMT polymorphisms (e.g., rs12325817) in women to assess risk for CDS 1.Management
Dietary choline supplementation for identified deficiencies 1.
Discontinuation of causative medications (e.g., captopril if cholestatic jaundice suspected) 2.
Management of underlying conditions like shock, heart failure, and infections 3.
Supportive care including monitoring liver function tests 3.Special Populations
Premenopausal Women: Genetic predisposition to PEMT dysregulation may affect susceptibility to choline deficiency-related liver dysfunction 1.
Postmenopausal Women and Men: Higher risk for developing multiorgan dysfunction due to lack of protective estrogen effects 1.Key Recommendations
Screen premenopausal women with risk factors for PEMT gene polymorphisms to identify susceptibility to choline deficiency syndrome (Evidence: Moderate 1).
Discontinue suspected medications like captopril if cholestatic jaundice develops post-administration (Evidence: Weak 2).
Manage postoperative intrahepatic cholestasis by addressing contributing factors such as fluid overload and infections, alongside supportive care (Evidence: Expert opinion 3).References
1 Resseguie ME, da Costa KA, Galanko JA, Patel M, Davis IJ, Zeisel SH. Aberrant estrogen regulation of PEMT results in choline deficiency-associated liver dysfunction. The Journal of biological chemistry 2011. link
2 Tabibian N, Alpert L, Alpert E. Captopril-induced liver dysfunction. Southern medical journal 1987. link
3 Hampel N, Lichtig C, Gersh I, Gellei B. Postoperative intrahepatic cholestasis. International surgery 1977. link