Journal
JOURNAL OF INHERITED METABOLIC DISEASE
Volume 34, Issue 1, Pages 197-201Publisher
SPRINGER
DOI: 10.1007/s10545-010-9250-z
Keywords
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Funding
- Newcastle upon Tyne Hospitals NHS Charity [RES0211/7262]
- Academy of Medical Sciences (UK) [BH090164]
- MRC (UK)
- German ministry of education and research (BMBF, Bonn, Germany)
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Combined respiratory chain deficiency accounts for about 30% of mitochondrial respiratory chain deficiencies and is frequently associated with mtDNA depletion, deletions or point mutations. However combined respiratory chain deficiency may also be caused by mutations in nuclear genes affecting mitochondrial translation. Here we describe a 2-year-old girl, who developed an acute, isolated, severe liver failure with mitochondrial pathology and decreased respiratory chain enzyme activities both in liver and skeletal muscle at 4 months of age. Her liver function improved significantly within a month, liver function tests returned to normal. Liver cirrhosis remained without any further complications so far. Pathogenic compound heterozygous mutations were identified in the TRMU gene. This condition is one of the few mitochondrial disorders with a life-threatening onset showing recovery later in life, therefore a prompt diagnosis and treatment of these patients has great importance in clinical practice. We suggest that TRMU deficiency should be considered in infants with acute liver disease.
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