期刊
WORLD JOURNAL OF HEPATOLOGY
卷 13, 期 11, 页码 1707-1726出版社
BAISHIDENG PUBLISHING GROUP INC
DOI: 10.4254/wjh.v13.i11.1707
关键词
Mitochondrial hepatopathy; Respiratory chain defects; Maternal inheritance; Neonatal liver failure; DNA depletion syndrome; Pearson syndrome
Mitochondria, known as the powerhouse of a cell, are closely linked to various disorders of the liver and beyond. Dysfunctions in their structure and function can have catastrophic consequences with multiple organ involvement. While primarily classified as a hepatopathy, mitochondrial respiratory chain defects can affect various organs, and diagnosis relies on recognizing subtle clinical clues and evaluating extra-hepatic involvement. Treatment aims to manage acute metabolic crises and provide long-term care, including nutritional rehabilitation.
Mitochondria, the powerhouse of a cell, are closely linked to the pathophysiology of various common as well as not so uncommon disorders of the liver and beyond. Evolution supports a prokaryotic descent, and, unsurprisingly, the organelle is worthy of being labeled an organism in itself. Since highly metabolically active organs require a continuous feed of energy, any dysfunction in the structure and function of mitochondria can have variable impact, with the worse end of the spectrum producing catastrophic consequences with a multisystem predisposition. Though categorized a hepatopathy, mitochondrial respiratory chain defects are not limited to the liver in time and space. The liver involvement is also variable in clinical presentation as well as in age of onset, from acute liver failure, cholestasis, or chronic liver disease. Other organs like eye, muscle, central and peripheral nervous system, gastrointestinal tract, hematological, endocrine, and renal systems are also variably involved. Diagnosis hinges on recognition of subtle clinical clues, screening metabolic investigations, evaluation of the extra-hepatic involvement, and role of genetics and tissue diagnosis. Treatment is aimed at both circumventing the acute metabolic crisis and long-term management including nutritional rehabilitation. This review lists and discusses the burden of mitochondrial respiratory chain defects, including various settings when to suspect, their evolution with time, including certain specific disorders, their tiered evaluation with diagnostic algorithms, management dilemmas, role of liver transplantation, and the future research tools.
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