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Published on: March 24, 2023
Implications of metabolic dysfunction associated fatty liver disease in COVID-19
Raja Chakraborty1, Deepak Sharma2, Devesh U Kapoor3
1Institute of Pharmacy, Assam Don Bosco University, Guwahati 782402, Assam, India.
Insights
Metabolic associated fatty liver disorder (MAFLD) increases COVID-19 risks. Patients with MAFLD and COVID-19 face worse outcomes due to metabolic dysfunction and liver injury.
Area of Science:
- Hepatology
- Infectious Diseases
- Metabolic Disorders
Background:
- Metabolic associated fatty liver disorder (MAFLD) affects one-third of the global population, often coexisting with conditions like type 2 diabetes and obesity.
- The COVID-19 pandemic highlighted increased susceptibility and severity in individuals with comorbidities.
- MAFLD patients, characterized by obesity and metabolic derangements, are at higher risk for severe COVID-19 outcomes.
Purpose of the Study:
- To review the implications of metabolic dysfunction in MAFLD patients with COVID-19.
- To analyze the combined impact of these two global pandemics on patient health.
- To explore the mechanisms linking MAFLD and COVID-19 severity.
Main Methods:
- Systematic review of existing literature.
- Analysis of epidemiological data on MAFLD and COVID-19 prevalence.
- Examination of clinical studies on COVID-19 outcomes in MAFLD patients.
Main Results:
- MAFLD patients are 4-6 times more prone to infections and severe COVID-19.
- COVID-19 can induce liver injury, evidenced by elevated liver enzymes (AST, ALT).
- Pre-existing MAFLD significantly increases the risk of morbidity and ICU admission in COVID-19 patients.
Conclusions:
- MAFLD exacerbates COVID-19, leading to poorer clinical outcomes.
- Mechanisms include direct hepatic injury, heightened inflammation, mitochondrial dysfunction, and immune compromise.
- Understanding this interaction is crucial for managing patients during overlapping pandemics.
Abstract:
Metabolic associated fatty liver disorder (MAFLD) characterizes the contributing etiologies (i.e., type 2 diabetes mellitus, metabolic syndrome, overweight) of individuals with fatty liver disease that affects 1/3rd of the world population. In 2020, the coronavirus disease 2019 (COVID-19) crisis was unprecedented, and people with different comorbidities became more susceptible to the infection caused by severe acute respiratory syndrome coronavirus 2. MAFLD patients are frequently obese with added metabolic menace like diabetes, hypertension, and dyslipidemia leading to greater jeopardy of COVID-19. MAFLD patients are 4 to 6-fold more prone towards infections. COVID-19 induces liver injury with elevated levels of aspartate aminotransferase and alanine aminotransferase and insignificantly elevated bilirubin. Hence, MAFLD in COVID-19 patients worsens the condition significantly. The evidence highlighting the interaction between MAFLD and altered liver functioning in COVID-19 suggested that COVID-19 patients with pre-existing MAFLD are at greater risk of morbidity or intensive care unit admission. Direct hepatic injury, enhanced levels of inflammatory cytokines, declined hepatic mitochondrial activity, and compromised immunity are considered as some underlying mechanisms. The main focus of this review is to discuss the implications of metabolic dysfunction associated with fatty liver disease in COVID-19 patients. The review systematically analyzes the effect of striking two worldwide pandemics (MAFLD and COVID-19) together in the present era.
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