We found elevated blood long-chain hydroxyacylcarnitine species in a carrier of LCHAD deficiency at 31weeks of pregnancy with a LCHAD deficient fetus during acute fatty liver of pregnancy-like liver involvement, but had been within the normal range at 25weeks of pregnancy.
However, the high incidence of the gestational complications acute fatty liver of pregnancy and hemolysis, elevated liver enzymes, and low platelets syndrome observed in mothers carrying a LCHAD/MTP-deficient child and the recent reports of fetal hydrops due to cardiomyopathy in MTP deficiency, as well as the high incidence of intrauterine growth retardation in children with LCHAD/MTP deficiency, suggest that FAO may play an important role during fetal development.
This review explores the causative relationship of a fetal disorder of mitochondrial fatty acid oxidation, long-chain 3-hydroxyacyl-CoA dehydrogenase (LCHAD) deficiency, and the serious maternal liver diseases of pregnancy-preeclampsia, the HELLP syndrome (hemolysis, elevated liver enzymes, and low platelet counts), and acute fatty liver of pregnancy.
The purpose of this study was to examine patients with AFLP and their offspring to determine if there were women with AFLP who were heterozygous for the FAO defect, long chain 3-hydroxyacyl CoA dehydrogenase (LCHAD) deficiency.
Our results demonstrate that mutations in the LCHAD domain of the trifunctional protein alpha subunit in affected offspring are associated with maternal acute fatty liver of pregnancy.