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Biomedical subjects

G Fourtanier

Publications and source records attributed to G Fourtanier.

At least 19 recordsLinked to original sources
PubMed1992

Omeprazole, an inducer of human CYP1A1 and 1A2, is not a ligand for the Ah receptor.

Omeprazole is a benzimidazole derivative which induces both P450 1A1 and 1A2 in human liver in vitro and in vivo. Northern blot analysis of polyA RNA prepared from primary cultures of human hepatocytes indicates that both 1A1 and 1A2 messages are induced by beta-naphthoflavone and omeprazole. Co-treatment of cells with these inducers and with actinomycin D or cycloheximide results in no accumulation of both mRNA or superinduction of 1A1 mRNA, respectively. 9S enriched fraction of cytosol was prepared either from human hepatocytes in culture or from human liver tissue and analyzed by sucrose density gradient sedimentation for its capacity to bind 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD), omeprazole or omeprazole sulfone (a metabolite of omeprazole in man). Whereas 2 microM TCDD displaced almost totally [3H]TCDD from the Ah receptor, both omeprazole and omeprazole sulfone did not, even at 5000-fold molar excess. In addition, when [14C] omeprazole was incubated with 9S enriched fraction of human liver or hepatocyte cytosol, no interaction could be detected in sucrose density gradient. These experiments suggest that omeprazole is not a ligand for the human liver Ah receptor.

Adult↗
PubMed1992

Combined liver kidney transplantation in primary hyperoxaluria type I. Prevention of the recidive of calcium oxalate deposits in the renal graft.

We report the case of a 31-year-old patient who underwent combined liver and kidney transplantation for primary hyperoxaluria type I. Intensive hemodialysis was performed before the intervention and post-operatively in order to maintain plasma oxalate levels near the normal range. In spite of the correction of the liver enzyme deficiency, oxalate removal from the tissular stores led to prolonged hyperoxaluria, more longer than one year after the transplantation, as already reported. This increased urinary oxalate excretion exposes the renal graft to the risk of recurrence of calcium oxalate deposits and stone formation during a prolonged period. Hemodialysis in the postoperative period and fluid intake allowing a large urine volume might be able to decrease the concentration of urinary oxalate under the critical value of 300 mumol/l, at which supersaturation of urine in respect of calcium oxalate occurs.

Adult↗
PubMed1992

[3606 cholecystectomies under celioscopy. The Register of the French Society of Digestive Surgery].

Early results of laparoscopic cholecystectomy must be evaluated. In this way, the "Société Française de Chirurgie Digestive" started to collect records of laparoscopic cholecystectomies from December 1989. 119 surgeons from 67 departments of surgery have been included in this study. By February 1992, 3,606 procedures were collected. The mean age of these patients was 51 years. Sex ratio was 0.29. 21.5% of patients had a history of acute cholecystitis. An operative cholangiogram was performed in 6.4% of cases. The mean operating time was 80 minutes. An immediate laparotomy was required in 7.1% of cases including 12 common bile duct injuries. Postoperative complications were detected in 4.3% of patients. Among these, 51 patients needed a second operative procedure including 13 common bile duct injuries. Two patients died in the postoperative period (mortality: 0.056%). The mean hospital stay was 4.8 days. History of acute cholecystitis increased significantly the immediate laparotomy required (p less than 0.01) and the incidence of postoperative complications (p less than 0.01). The mortality of laparoscopic cholecystectomy seems to be equivalent to that of open cholecystectomy. On the other hand, the incidence of common bile duct injury seems to be increased. However, the absence of controlled study prevents us from comparing the results with the open cholecystectomy. Furthermore, the incomplete nature of this register prevents us from concluding whether it reflects the real dangers of laparoscopic cholecystectomy. A more rigorous evaluating method should be considered in the future.

Adolescent↗
PubMed1989

[Computerized tomographic diagnosis of hepatocarcinoma after injection of lipiodol into the hepatic artery].

Iodized oil (lipiodol) injected into the hepatic artery is selectively retained by hepatocarcinomas, as demonstrated by computerized tomography (CT) performed one week after the injection. The value of this technique for the diagnosis of hepatocarcinoma was assessed in a retrospective study of 45 patients. In 39 per cent of the cases intrahepatic tumoral extension was determined by the iodized oil which showed tumoral nodules that had not been detected by conventional methods, such as ultrasonography and CT alone. The lesions revealed by the iodized oil were small nodules around the main tumour. The combined iodized oil-CT technique plays an important role in the choice of treatment, especially when surgical excision is contemplated. It might also contribute to an early diagnosis of hepatocarcinoma in patients at risk, as illustrated by four of our cases where conventional morphological examinations had been negative.

Adult↗
PubMed1989

Coloplasty and free intestinal transplants in the treatment of extensive cancers of the pharyngo-oesophageal junction.

The authors report their surgical experiences with 55 extensive tumours of the pharyngoesophageal junction. Thirty-three of these cases were managed by circular pharyngolaryngectomy, total oesophagectomy with stripping and left coloplasty, and 22 were treated with circular pharyngolaryngectomy with free intestinal transplants. A comparative study of the post-operative courses of the patients and their oncological and functional outcomes shows the advantages, disadvantages and indications of these two techniques.

Adult↗
PubMed1987

[Total esophagectomy by stripping without thoracotomy in cancer of the pharynx, esophagus and cardia. 34 cases].

Total oesophagectomy by stripping without thoracotomy was performed in 34 cancer patients to reduce operative mortality and morbidity in those with impaired respiratory function. The carcinoma was located in the pharynx in 20 cases, on the cardia in 9 cases and on the lower oesophagus in 5 cases. Reconstruction in the posterior mediastinum was effected with the descending colon in 32 patients. The operative mortality rate was 11.8% and fistulization developed in 20.6% of the cases. Eight patients (26.5%) required post-operative endoscopic dilatation. Ninety per 100 of the patients who survived surgery resumed satisfactory feeding. Thus, these patients with high operative risk who underwent oesophagectomy by stripping without thoracotomy benefited from tumoral excision and normal feeding with results comparable to those of other types of oesophagectomy.

Adult↗
PubMed1987

[Post-traumatic hemobilia. Is selective hepatic artery ligation dangerous?].

Selective hepatic artery ligation has traditionally been considered dangerous by some authors in the treatment of traumatic haemobilia. Having observed one case in which this technique was successful in controlling liver haemorrhage, the authors have reviewed the literature. Conditions in which selective hepatic artery ligation can be dangerous are discussed. The safety and effectiveness of this treatment of traumatic haemobilia in normovolemic patients is emphasized.

Adolescent↗
PubMed1987

[Nutritional status of patients with digestive system cancer: preoperative prognostic significance].

We have attempted to establish a prognostic nutritional index prospectively in 633 patients with digestive carcinoma making it possible to predict tumor resectability and occurrence of postoperative complications. The following factors were studied prior to surgery: age, sex, weight loss index, triceps skinfold thickness, midarm circumference, lymphocyte count, plasma albumin, transferrin and prealbumin levels, delayed hypersensitivity as investigated by 8 skin tests. The prognostic nutritional index was calculated using Mullen's formula. Unidimensional and multidimensional studies (linear discriminant and logistic discriminant analyses with partial correlations) were used for the statistical analysis. Mortality was 6,7 p. 100 while 16,2 p. 100 of patients presented a postoperative complication. The following variables showed a significant correlation with the resectability of the tumour: weight loss (p less than 0.0001), triceps skinfold thickness (p less than 0.01), midarm circumference (p less than 0.01), total lymphocyte count (p less than 0.01), plasma transferrin (p less than 0.01), delayed hypersensitivity (p less than 0.05). In the occurrence of postoperative complications there was a statistically significant value only to weight loss (p less than 0.001) and delayed hypersensitivity (p less than 0.05). Logistic discriminant analysis gave a linear model predicting tumor resectability in 78 p. 100 of patients and postoperative complications in 86 p. 100 of patients in which weight loss and delayed hypersensitivity were statistically significant. No prognostic value of Mullen's index was found. This study shows that assessment of the preoperative nutritional status of patients with gastrointestinal cancer makes it possible to predict tumor resectability and postoperative complications.

Age Factors↗