Ch P Strassburg

..Patient-related preconditions and concomitant HBIG administration should be further investigated as possible predictors for response...

..UGT1A3 transcription was reduced in the presence of promoter SNPs. These data demonstrate xenobiotic induced regulation of the UGT1A3 gene by the AhR, which shows genetic variability...

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..Glucuronidation and its variability are likely to represent an important factor for individualized drug therapy and risk prediction impacting the drug development and licensing processes...

..As a consequence of these developments indications, selection of recipients and the management of the waiting list have seen profound change...

..Novel drugs and strategies for the induction of tolerance are under development...

..Foremost the diagnosis of the three diseases is reached by clinical, biochemical and in some instances also histological means which are supplemented and confirmed by the use of appropriate genetic tests...

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..Fair allocation and medical necessity therefore define the challenges surrounding the indications for liver transplantation...

..AIH, PBC and PSC are well established indications for liver transplantation with good results. Transplantation is required when cirrhosis is progressive despite therapy and is likely to lead to liver failure...

..The only curative option is liver transplantation which should be considered when bilirubin levels exceed 100 microM/l...

..The prediction of unwanted drug reactions associated with Gilbert's syndrome will improve drug safety, therapeutic individualization and impact the drug-development process...

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..IgG4-associated cholangitis can mimic primary sclerosing cholangitis but--in contrast-- can respond to the administration of steroid-containing immunosuppression...

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..Hepatic and extrahepatic metabolism of cyclosporine A and tacrolimus by cytochrome P450 proteins has been analyzed but metabolism and inactivation by glucuronidation has not been investigated...

..In addition, the precise diagnosis of these inherited hyperbilirubinemic syndromes avoids unnecessary invasive procedures for suspected more severe hepatobiliary disease...

..Although only 4% of transplant patients are transplanted with the diagnosis AIH, the risk for graft loss because of recurrence has to be considered and recurrent AIH treated after transplantation...

..The complexity hidden behind this pharmacogenetic abnormality is of profound significance for drug development and therapy...

..Hepatic glucuronidation undergoes significant changes during fetal and neonatal development requiring age adapted drug therapy. Regulation of individual UGT genes during hepatic development has not been defined...

..Hepatitis A does not lead to chronic infection. This was also assumed for hepatitis E. However, reports indicate chronic courses in selected patient groups. A vaccine for hepatitis E is currently not yet available...

..A silent mutation at codon 11 and missense mutations at codons 129, 131, and 208 lead to the description of three polymorphic alleles designated UGT1A7*2, UGT1A7*3, and UGT1A7*4...

..Although only 4% of transplant candidates are AIH patients, the risk for graft loss because of recurrence has to be considered, and recurrent AIH should be treated after transplantation...

..Virus infection remains at the center of molecular and cellular research aimed at identifying the forces driving human autoimmunity and autoimmune diseases...

..Only four percent of transplant candidates are transplanted for AIH but the risk for graft loss because of recurrence has to be considered and recurrent AIH treated after transplantation...

..In a substantial proportion of patients, recurrent hepatitis C after liver transplantation (OLT) rapidly progresses to graft cirrhosis. The role of different immunosuppressive schemes is not well evaluated...

..33-3.07)). We identify the significant association of the UGT1A7*3 allele encoding a low catalytic activity protein as a risk gene in proximal digestive tract cancer and as a potential marker for cancer susceptibility...

..In most patients, onset of hearing loss is early and bilateral, suggesting a dose-dependent toxicity. The pathogenetic role of different immunosuppressants remains to be evaluated...

..Pre-emptive antiviral treatments should be administered since delayed antiviral treatment is frequently unable to prevent liver failure...

..This study examines the association of UGT1A7 and UGT1A9 gene polymorphisms with hepatocellular carcinoma...

..No clinical correlation was observed for anti-CYP2A6. Autoimmune hepatitis and APECED hepatitis are characterized by different molecular targets of autoantibodies with no overlap...

..4% for PSC, 78.5% for biliary atresia, 70% for acute liver failure, 69.1% for HBV-related cirrhosis, 61.3% for hepatocellular carcinoma, and 56% for HCV-related cirrhosis...

..However, the Aire gene defect showed that genes involved in the induction of immunologic tolerance provide candidates for etiologic factors in autoimmune liver diseases...

..Therapy consists of hormone replacement therapy and treatment of clinical symptoms. In some APECED patients immunosuppressive therapy seems to be promising...

..In idiopathic Addison disease, CYP21 is the major autoantigen...

..In conclusion, cyclosporine differentially alters function and phenotype of myeloid dendritic cells leading to a partially impaired capacity to stimulate allogenic and autologous T cells...

..Acute cryptogenic hepatitis may represent both a self-limited disease as well as the onset of chronic hepatitis. The aim of this analysis was to evaluate the effect of steroid treatment in patients with acute cryptogenic hepatitis...

..The frame shift mutation G263fsX377 in exon 6 results in a protein lacking both PHD zinc-finger domains similar to the R257 X mutation. This novel mutation was not found in 50 German controls...

..Bacterial culture was not successful, and also PCR tests remained negative. The clinical symptoms quickly resolved after the initiation of antibiotic therapy with amoxicillin...

..Our data identify CD45 as a gene associated with AIH, and further substantiates the hypothesis that CD45 represents a modifier gene of human autoimmunity...

..Future studies must differentiate the targets of pathologic immunity and distinguish self-antigens from infectious nonself-antigens. Transgenic animal models of AIH are needed to assess the pathogenicity of the antigenic targets...

..AhR-mediated regulation of the human UGT1A4 gene by two XRE and a modulation by naturally occurring genetic variability by SNPs is demonstrated, which indicates gene-environment interaction with potential relevance for drug metabolism...

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..Further studies are needed to elucidate the mechanisms by which the vitamin D receptor contributes to the development of autoimmune diseases...

..Thus, these data indicate that a long-term extrahepatic HBV reservoir exists, which is relevant not only for liver transplantation but also for other types of transplantations, including bone marrow grafting...

..Thus, viral coinfections may be associated with ameliorated courses of diseases under certain conditions...

..Further studies should address the question, of whether the use of potent adjuvant systems results in higher response rates...

..For several reasons, Lu-LTx is performed in few centers and information about the technical issues, posttransplant management and long-term outcomes associated with this procedure is limited...

..Uridine 5'-diphosphate glucuronosyltransferases are phase II detoxifying enzymes capable of tobacco-borne toxicant inactivation and cellular protection. This study analyzes UGT1A7 gene polymorphisms in pancreatic diseases...

..This epitope is homologous to three-dimensional epitopes detected by autoantibodies directed against hepatic cytochromes P450s in drug induced hepatitis and to an autoepitope on CYP21B associated with adrenal failure...

..These findings suggest that autoimmune regulator gene variants might predispose children to systemic autoimmune disease, a recurrence of immune disease, or both...

..Hepatic induction of bilirubin-glucuronosyltransferase was suggested by increased relative amounts of conjugated serum bilirubin. This molecular mechanism was confirmed in primary cultures of human hepatocytes...

..Calcineurin inhibitor-related neurotoxicity appears as a possible mechanism. Further prospective investigations with objective hearing tests are necessary to confirm these results and to evaluate the role of immunosuppression...

..This haplotype predisposes to hyperbilirubinemia in ATV treatment and may have an additional role as a pharmacogenomic risk factor for drug therapy...

..In conclusion, patients afflicted with PNH appear to be at high risk of incurring complications after liver transplantation...

..Data from several centres have contributed to provide criteria that allow improved prediction of which patients may, or may not, benefit from liver transplantation alone...

..Despite a high frequency of acute cellular rejection episodes and disease recurrence, transplantation for AIH has a 5-yr survival rate, which does not differ from that observed in patients transplanted for genetic liver diseases...

..Two polymorphisms of the hepatic UGT1A4 protein show a differential metabolic activity toward mutagenic amines and endogenous steroids, altering hepatic metabolism and detoxification...

..In the present study, immunoreactivities and disease associations of AMA against BCKADC-E2 were analyzed. B-cell autoepitopes on BCKADC-E2 were mapped by immunoprecipitation assay...

..Thus, measurement of caspase activity might provide a novel diagnostic tool, especially for patients with normal aminotransferases but otherwise undiagnosed histologically active hepatitis and progressive fibrosis...

..Here we provide an overview of the current clinical and genetic features of APECED in comparison to the genetic background of the frequently associated disease components of APECED...

..Our finding emphasizes the importance of combinations of structural and regulatory gene polymorphisms that may be useful as markers of drug toxicity...

..In Europe, about 4% of cirrhotic patients with the diagnosis of AIH undergo transplantation. The diagnosis and awareness of the disease is designed to reduce mortality and morbidity...

..A long history of IBD, male gender, and nicotine abuse are risk factors for the development of HBC. In particular, CA 19-9, body-weight and dominant bile duct stenosis are valuable indicators in detecting HBC in PSC patients...

..Autoantibodies and their corresponding autoantigens are intensively studied to provide clues to the understanding of disease initiation, tissue specificity, and propagation of hepatic autoimmune diseases...

..Primary sclerosing cholangitis is a disease of unknown aetiology and without any further curative treatment options apart from liver transplantation. Therefore it may be regarded as the greatest challenge in hepatology today...

..These yet incompletely defined syndromes are an important differential diagnosis in the difficult-to-treat patient with autoimmune hepatitis...

..A prediction of outcome would improve preoperative patient selection and management...

..This requires a detailed consideration of the differences of biopsy techniques currently available to the clinical hepatologist...