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X Roblin

Publications and source records attributed to X Roblin.

At least 19 recordsLinked to original sources
PubMed2005

[Factors associated with hyperhomocysteinemia in inflammatory bowel disease: prospective study in 81 patients].

BACKGROUND: A high prevalence (52%) of hyperhomocysteinemia is observed in Crohn disease (CD), however it is not well documented in ulcerative colitis (UC). Furthermore, in the different works studying hyperhomocysteinemia the associated factors are different. AIM: Prospective evaluation of hyperhomocysteinemia in inflammatory bowel disease (IBD) patients, of the risk factors and the determination of a potential risk of colorectal carcinoma in case of hyperhomocysteinemia. PATIENTS AND METHODS: IBD patients followed in our department were prospectively recruited between November 2003-September 2004. To be included patients should have passed a coloscopy in the two years. Patients with kidney failure or drugs supposed, to interfere with homocystéine metabolism (folates, vitamin B12, methotrexate) were excluded from the study. The following parameters were analysed: age, sex, clinical activity indexes (CDAI for Crohn disease and CAI for ulcerative colitis), length-extent and type of the disease (CD or UC), smoking, plasma homocystein concentration, folates and vitamin B12. RESULTS: Eighty-one patients (60 CD, 21 UC, mean age 43.8 +/- 17.3) were included, 30 had an active disease at inclusion and 16 were smokers. The prevalence of high homocystein concentration was 55.6%. In univariate analysis a low rate of folates was the only risk factor for a high homocystein concentration (74 vs. 52.8%; P = 0.018). Smoking was almost an associated factor. In multivariate analysis, a low rate of folate was the only risk factor of hyperhomocysteinemia, OR = 3.59 [1.27-10.17]. Five endoscopic lesions considered as precancerous were described; these patients had all a hyperhomocysteinemia. CONCLUSION: The prevalence of hyperhomocysteinemia is high in UC and in CD. A low folate rate is the only risk factor observed in our study. There is a possible link between colorectal cancer and hyperhomocysteinemia. A high Plasma homocystein concentration must be search in inflammatory bowel disease patients and a substitutive treatment of folates and vitamin B12 is necessary in case of hyperhomocysteinemia.

Adult↗
PubMed2005

6-tioguanine monitoring in steroid-dependent patients with inflammatory bowel diseases receiving azathioprine.

BACKGROUND: 6-Thioguanine (6-tioguanine) nucleotides are the active metabolites of azathioprine. AIM: The aim of the study was to evaluate the rate of clinical remission without steroids in steroid-dependent Crohn's disease and ulcerative colitis patients receiving azathioprine, the medium- and long-term efficacy and the predictive factors of clinical response when monitoring 6-tioguanine. METHODS: Steroid-dependent Crohn's disease and ulcerative colitis patients receiving either azathioprine or not (treated later with a daily dose of 2.5 mg/kg) were prospectively included. 6-tioguanine was monitored at 1 and 2 months and every 3 months thereafter for 1 year. The azathioprine dose was adapted to reach a 6-tioguanine level of >250 pmol/8 x 10(8) red blood cells. Thiopurine methyltransferase genotype/phenotype was evaluated in some patients. RESULTS: A total of 106 patients were prospectively included (70 Crohn's disease, 36 ulcerative colitis). The clinical remission rate without steroids in patients receiving azathioprine, in intention-to-treat analysis, was 72% and 59% at 6 and 12 months, respectively. The remission rate was significantly higher in patients with 6-tioguanine >250 pmol/8 x 10(8) RBC (86% and 69% at 6 and 12 months, respectively; P < 0.01). No significant difference was observed between Crohn's disease and ulcerative colitis patients whether treated by azathioprine or not on inclusion. In the univariate analysis, the absence of Crohn's disease stenosis, a 6-tioguanine level >250 pmol/8 x 10(8) RBC, and an increase of erythrocyte mean corpuscular volume were the factors predictive of a favourable clinical response. In the multivariate analysis, only a 6-tioguanine level of >250 pmol/8 x 10(8) red blood cells was a predictive factor of favourable clinical remission. CONCLUSIONS: Clinical remission without steroids is significantly more likely when monitoring 6-tioguanine so as to reach a level of >250 pmol/8 x 10(8) red blood cells in steroid-dependent Crohn's disease and ulcerative colitis patients receiving azathioprine (86% and 69% at 6 and 12 months, respectively).

Adolescent↗
PubMed2003

Drug interaction between infliximab and azathioprine in patients with Crohn's disease.

BACKGROUND: A drug interaction has been observed between infliximab and methotrexate in rheumatoid arthritis. AIM: To look for an interaction between infliximab and azathioprine in Crohn's disease patients using the active metabolites of azathioprine: 6-tioguanine nucleotides. METHODS: Patients receiving azathioprine who required infliximab for ileo-colonic or ano-perineal Crohn's disease were recruited prospectively. 6-tioguanine nucleotide levels were evaluated before infusion, within 1-3 weeks after the first infusion and 3 months after the first infusion. The clinical outcome was evaluated by the Harvey-Bradshaw index or the closure of ano-perineal fistulas. RESULTS: Thirty-two patients were included (17 received one infusion and 15 received three infusions). The mean 6-tioguanine nucleotide level was comparable before and 3 months after the first infusion, but a significant increase was observed within 1-3 weeks after the first infusion (P < 0.001). In parallel, a significant decrease in leucocyte count and increase in mean corpuscular volume were observed; these modifications were normalized 3 months after infusion. An increase in 6-tioguanine nucleotide level of greater than 400 pmol/8 x 108 erythrocytes was strongly related to good tolerance and a favourable response to infliximab, with a predictive value of 100%. CONCLUSIONS: This prospective study provides evidence for a drug interaction between azathioprine and infliximab.

Adolescent↗
PubMed2003

[Watermelon stomach: a rare cause of iron deficiency anemia, surgically treatable; a new case with review of the literature].

The authors report a new case of water-melon stomach, without portal hypertension, and responsible for a iron deficiency anemia cured by antrectomy. Water-melon stomach is a particular form of gastric antral vascular ectasia, characterized by a specific and striking endoscopic aspect. The diagnostic, histologic, pathogenic and therapeutic aspects are reviewed.

Adult↗
PubMed2002

[Should the insulin resistance associated with hepatic iron overload be researched during diabetes mellitus type II?].

The insulin resistance-associated hepatic iron overload is the first aetiology of iron overload disorders in France. If we do not know its mechanism, the prevalence among type II diabetic patients is around 40%. Hyperferritinaemia is present in all cases, but is not specific of the diagnosis. This pathology features liver fibrosis among 10% of the patients and some cases of primary liver cancer have been described. Moreover, a large body of evidence favors the direct involvement of iron in the development of extra hepatic neoplasia, while therapeutic phlebotomy to maintain low to normal body iron stores can prevent all known complications of insulin resistance-associated hepatic iron overload. In addition, treatment of type II diabetes mellitus and other features of insulin resistance syndrome is essential. In conclusion, it is important to detect this syndrome during type II diabetes mellitus.

Diabetes Mellitus, Type 2↗
PubMed1998

[Importation of Plasmodium falciparum malaria, in Réunion Island, from 1993 to 1996: epidemiology and clinical aspects of severe forms].

Located in the Indian ocean, Reunion island, a French overseas territory, is free of malaria since the 1960's. As malaria is still highly endemic in the neighbouring countries, imported cases are averaging 130 to 150 cases per year. From 1993 to 1996, about 483 cases of imported malaria were admitted in Reunion. Five severe complicated Plasmodium falciparum malaria cases occurring in non-immune persons, required further treatment in the intensive care unit (age 40 +/- 8 years, duration: 14.8 +/- 7.4, SAPS: 21 +/- 10). Three patients died. As short-stay travellers, patients were contaminated in Madagascar (4) and in Malawi (1) and presented with an associated pathology: alcohol and tobacco abuses (2 cases), AIDS (1 case). In all cases, chemoprophylaxis was either inadequate (chloroquine alone, 3 cases) or absent (2 cases) and the diagnosis and the appropriate treatment were delayed. Moreover, patients were either self-treating themselves, or initially refused to be admitted. Parasitemia was very high. Two patients died within an hour following their admission before diagnosis could be made and quinine treatment be initiated (rupture of the spleen, multiple organ failure). One patient died at day 7 (acute respiratory distress syndrome, renal failure). Two survived under respiratory assistance and hemodialysis and presented the usual intensive care complications (respiratory nosocomial infection, acute cholecystitis). In Réunion island, imported P. falciparum still accounts for a high rate of morbidity and few fatalities, despite a sophisticated curative health system. Delay in diagnosis and institution of an appropriate treatment is frequent in non-immune persons who develop fever and non-specific symptoms. It markedly increases the risk of complications and death from falciparum malaria as well as morbidity cofactors. Emphasis must be placed on appropriate information of health personnel and travellers.

Acute Disease↗
PubMed1997

[Neuromeningeal cryptococcosis and alcoholic cirrhosis].

Cryptococcal infections are usually described in immunosuppressed patients, but have also been described in patients with cirrhosis. We report a case of cryptococcal meningitis in a 62 year old man with Child class C alcoholic cirrhosis. Clinical signs associated mental confusion and discrete meningeal stiffness without fever. Diagnosis was confirmed by lumbar puncture which identified specific antigens and isolated Cryptococcus on Sabouraud medium. In patients with cirrhosis, cryptococcal meningitis infection should be considered in cases of isolated and unexplained mental confusion.

Antifungal Agents↗