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Biomedical subjects

Jean-Charles Duclos-Vallée

Publications and source records attributed to Jean-Charles Duclos-Vallée.

12 recordsLinked to original sources

[Wilson's disease].

Wilson's disease is an autosomal recessive disorder of copper excess. This illness results from mutations of the ATP7B gene chromosome 13. The discovery of the gene allowed a better understanding of cytosolic copper trafficking its relationship with ceruloplasmin synthesis. Symptomatic patients may present with hepatic, neurologic or psychiatric forms. Clinical and phenotypic evidences provide only presumptive arguments for this disease which can be routinely assessed by molecular analysis. This disease can be efficiently treated by chelation and zinc therapy. Liver transplantation is the therapy to patients with hepatic fulminant course, or in those with relentless progression of hepatic dysfunction in spite of medical therapy.

Hepatolenticular Degeneration↗

Hepatitis C virus viral recurrence and liver mitochondrial damage after liver transplantation in HIV-HCV co-infected patients.

BACKGROUND/AIMS: As life expectancy in HIV-HCV co-infected patients improves, end stage liver disease requiring liver transplantation (LT) may become an emerging problem. We report the Paul Brousse Hospital experience of transplantation for end stage cirrhosis in HIV-HCV co-infected patients. METHODS: Seven consecutive HIV-HCV co-infected patients were transplanted between December 1999 and December 2002 for end stage liver disease due to HCV. All patients were treated by highly active antiretroviral therapy (HAART), HIV plasma viral load was <400 copies/ml and median CD4 lymphocyte count was 306 cells/mm3 (range, 103-510) before LT. At the time of evaluation (March 2003), the median follow-up was 21 months (range, 4-40). RESULTS: Two patients died, 4 and 22 months, respectively after LT. At the last biopsy, METAVIR score was staged F4 in two patients, F3 in two, and F1 in one. Microvesicular steatosis was noted in nearly all patients. The ratio of mitochondrial to nuclear DNA was low in three of four patients examined as compared with the amount of liver mtDNA found in eight HIV-negative, HCV-infected controls (P=0.01). CONCLUSIONS: A significant defect in the activity of the respiratory chain complex IV was noted in all five patients studied. Mitochondrial hepatotoxicity and severe HCV recurrence occur in HIV-HCV co-infected patients after LT.

Adult↗

Remission with ursodeoxycholic acid of type 1 autoimmune hepatitis resistant to azathioprine and steroids.

Combination therapy with steroids and azathioprine is the reference treatment for autoimmune hepatitis, but potential adverse effects are numerous and intolerance can occur. We report a patient with a well-documented type 1 autoimmune hepatitis intolerant to corticosteroids and azathioprine therapy, in whom eight years of ursodeoxycholic acid monotherapy was associated with biochemical and histological remission.

Adrenal Cortex Hormones↗

Could post-liver transplantation course be helpful for the diagnosis of so called cryptogenic cirrhosis?

Cryptogenic cirrhosis (CC) is diagnosed in 5-30% of cirrhotic patients overall and 7% of patients who undergo liver transplantation for cirrhosis. In our series of patients transplanted for CC, pre-transplant clinical and histological data and the post-transplant course were reexamined in an attempt to identify the aetiology. Among the 881 patients transplanted in our centre between 1987 and 2000, 28 patients with a median age of 46 yr (range: 18-69) at transplantation were initially classified as having CC. Two patients were excluded because of intense ischaemic lesions caused by chemoembolization prevented histological analysis of the native liver (n = 1) and because of cryptic HBV infection (n = 1). Among the remaining 26 patients, four groups were individualized: (i) patients with chronic inflammatory liver disease with autoimmune features (n = 14, 54%); (ii) patients with features suggestive of non-alcoholic fatty liver disease (n = 3, 11.5%); (iii); patients with incomplete septal cirrhosis (ISC) and vascular liver disease (n = 3), and (iv) patients with unresolved CC (n = 6, 23%). In the autoimmune liver disease group, the median International Autoimmune Hepatitis score was 12.5 (range: 11-19) after reevaluation and review of the post-transplantation course was helpful to confirm the diagnosis with the occurrence of active graft hepatitis in nine patients, with autoantibodies in five patients. The vascular group was characterized by lesions of obliterative portal venopathy and ISC in all native livers. Diagnosis of NAFLD was based on the clinical background of obesity and/or type 2 diabetes and the presence of steatosis or steatohepatitis in native livers and graft biopsies. A definite aetiological diagnosis can be achieved in the majority of patients initially diagnosed with CC. Autoimmune liver disease emerged as the main aetiology (14 of 26 patients, 54%) and frequently recurred on the grafted liver (nine cases). In all cases a precise diagnosis is obviously of practical interest for better management of post-transplant survey and treatment.

Adolescent↗

[Liver transplantation for intrahepatic Rendu-Osler-Weber's disease: the Paul Brousse hospital experience].

UNLABELLED: Nine centers have reported 15 cases of liver transplantation for Rendu-Osler-Weber's disease with liver involvement. Six cases are reported to analyse the specific technical and hemodynamical aspects. PATIENTS AND METHODS: Five women and 1 man were transplanted for Rendu-Osler-Weber's disease. The clinical presentation was biliary disease in 3 cases, portal hypertension in 2 cases, cardiac failure in 1 case. Systemic hemodynamics were assessed at the beginning and at the end of the transplantation procedure. RESULTS: The procedure lasted from 11 to 15 hours (median=13 hours and 15 minutes). Blood transfusion during the procedure varied from 16 to 88 blood units (median=59 blood units). Six patients had hyperkinetic syndrome at the beginning of the procedure. At the end of transplantation, mean arterial pressure significantly increased (from 66 +/- 2 to 72 +/- 6 mmHg, p<0.05), whereas cardiac output (from 9.2 +/- 3.0 à 5.7 +/- 0.5 L/mn, p<0.05) significantly decreased. Two patients died at D2 and D11 and 4 are alive 3 to 7.5 years (median=4 years 9 months) after transplantation with a normal liver function and without any cardiac symptoms. CONCLUSION: Liver transplantation for Rendu-Osler-Weber's disease is a difficult procedure. When successful, liver transplantation is curative of both the liver disease and the hyperkinetic state.

Adult↗

Recurrence of autoimmune hepatitis, primary biliary cirrhosis and primary sclerosing cholangitis after liver transplantation.

Liver transplantation (LT) is the standard therapeutic approach for the treatment of end-stage acute and chronic autoimmune liver disease as autoimmune hepatitis (AIH), primary biliary cirrhosis (PBC) and primary sclerosing cholangitis (PSC). Results of liver transplantation in these indications are good with a patient survival after LT at 5 years of 85%. However several series have reported a possible recurrence of primary autoimmune liver disease after liver transplantation. Concerning all these three autoimmune liver diseases, recurrence of the disease on the graft may have multiple clinical, biochemical, histological and radiological expression influenced by different factors as the diagnostic methods used, the degree of immunosuppression and the genetic background of the recipient. We would like with this overview to describe the different pattern of recurrence of these autoimmune liver disease, their potential influence on the liver graft and their therapeutic management.

Cholangitis, Sclerosing↗