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Hepatology. 2007 Jul 26; [Epub ahead of print]Links
Antimitochondrial antibodies in acute liver failure: Implications for primary biliary cirrhosis.
Leung PS, Rossaro L, Davis PA, Park O, Tanaka A, Kikuchi K, Miyakawa H, Norman GL, Lee W, Gershwin ME; Acute Liver Failure Study Group.
Division of Rheumatology/Allergy, University of California, Davis Medical Center, Sacramento, CA.

In our previous work, including analysis of more than 10,000 sera from control patients and patients with a variety of liver diseases, we have demonstrated that with the use of recombinant autoantigens, antimitochondrial autoantibodies (AMAs) are only found in primary biliary cirrhosis (PBC) and that a positive AMA is virtually pathognomonic of either PBC or future development of PBC. Although the mechanisms leading to the generation of AMA are enigmatic, we have postulated that xenobiotic-induced and/or oxidative modification of mitochondrial autoantigens is a critical step leading to loss of tolerance. This thesis suggests that a severe liver oxidant injury would lead to AMA production. We analyzed 217 serum samples from 69 patients with acute liver failure (ALF) collected up to 24 months post-ALF, compared with controls, for titer and reactivity with the E2 subunits of pyruvate dehydrogenase, branched chain 2-oxo-acid dehydrogenase, and 2-oxo-glutarate dehydrogenase. AMAs were detected in 28/69 (40.6%) ALF patients with reactivity found against all of the major mitochondrial autoantigens. In addition, and as further controls, sera were analyzed for autoantibodies to gp210, Sp100, centromere, chromatin, soluble liver antigen, tissue transglutaminase, and deaminated gliadin peptides; the most frequently detected nonmitochondrial autoantibody was against tissue transglutaminase (57.1% of ALF patients). Conclusion: The strikingly high frequency of AMAs in ALF supports the thesis that oxidative stress-induced liver damage may lead to AMA induction. The rapid disappearance of AMAs in these patients provides further support for the contention that PBC pathogenesis requires additional factors, including genetic susceptibility. (HEPATOLOGY 2007.).

PMID: 17657817 [PubMed - as supplied by publisher]

Kommentar: PBC er koblet til glutenintoleranse


Indian J Pediatr. 2006 Sep;73(9):809-11.Links
Liver involvement in celiac disease.
Maggiore G, Caprai S.
Department of Reproductive Medicine and Child Development University of Pisa, Gastroenterology and Liver Unit and IsMeTT, University of Pittsburgh Medical Center, Palermo, Italy. Denne e-postadressen er beskyttet mot programmer som samler e-postadresser. Du må aktivere javaskript for å kunne se den.

Celiac disease may present as a cryptogenic liver disorder being found in 5-10 % of patients with a persistent and cryptogenetic elevation of serum aminotransferase activity. In fact, a wide spectrum of liver injuries in children and adults may be related to CD and in particular: (1) a mild parenchymal damage characterised by absence of any clinical sign or symptom suggesting a chronic liver disease and by non-specific histological changes reversible on a gluten-free diet; (2) a chronic inflammatory liver injury of autoimmune mechanism, including autoimmune hepatitis, primary sclerosing cholangitis and primary biliary cirrhosis, that may lead to fibrosis and cirrhosis, generally unaffected by gluten withdrawal and necessitating an immunosuppressive treatment; (3) a severe liver failure potentially treatable by a gluten-free diet. Such different types of liver injuries may represent a spectrum of a same disorder where individual factors, such as genetic predisposition, precocity and duration of exposure to gluten may influence the reversibility of liver damage. A rigorous cross-checking for a asymptomatic liver damage in CD individuals and conversely, for CD in any cryptogenic liver disorder including end-stage liver failure is recommended.

PMID: 17006040 [PubMed - indexed for MEDLINE]

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