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Genève, Switzerland

Selma W.B.,University of Sousse | Harizi H.,University of Bordeaux Segalen | Bougmiza I.,Medicine Faculty | Hannachi N.,University of Sousse | And 3 more authors.
DNA and Cell Biology | Year: 2011

Interferon gamma (IFN-γ) is a key cytokine involved mainly in the defense against intracellular pathogens such as Mycobacterium tuberculosis. Given its key role in the control of tuberculosis (TB), in the present article we have investigated a possible association between IFN-γ gene single-nucleotide polymorphism linked to high and low producer phenotypes (IFN-γ [+874Thigh→Alow]) (rs2430561) and risk development of active TB in Tunisian patients. Genomic DNA samples were obtained from 223 patients with active TB (168 pulmonary and 55 extrapulmonary cases) and 150 healthy blood donors. Genotypes were analyzed using polymerase chain reaction-restriction fragment length polymorphism method. The +874 AA genotype (low IFN-γ producer) was significantly associated with increased risk of developing of active pulmonary TB (odds ratio [OR]2.18; 95% confidence intervals [CI], 1.33-3.57; P corrected for the number of genotypes [Pc]0.003). By contrast, the AT genotype was found to be significantly associated with resistance to pulmonary TB (OR0.46; 95% CI, 0.28-0.74; Pc0.0018) and extrapulmonary TB development (OR0.46; 95% CI, 0.23-0.91; Pc0.045). Collectively, our data showed that the IFN-γ +874T/A polymorphism is a determinant in the resistance or susceptibility to the development of active TB in the studied population. © 2011 Mary Ann Liebert, Inc. Source

Flaum V.,University of Strasbourg | Flaum V.,Center Hospitalier Of Luxembourg | Schneider A.,University of Strasbourg | Gomes Ferreira C.,Center Hospitalier Of Luxembourg | And 10 more authors.
Journal of Pediatric Surgery | Year: 2016

Background Ultrasonography is a well-established efficient diagnostic tool for ileocolic intussusceptions in children. It can also be used to control hydrostatic reduction by saline enemas. This reduction method presents the advantage of avoiding radiations. Parents can even stay with their children during the procedure, which is comforting for both. The purpose of this study was to present our 20 years' experience in intussusception reductions using saline enema under ultrasound control and to assess its efficiency and safety. Material and methods This retrospective single center study included patients with ileocolic intussusceptions diagnosed by ultrasound between June 1993 and July 2013. We excluded the data of patients with spontaneous reduction or who underwent primary surgery because of contraindications to hydrostatic reduction (peritonitis, medium or huge abdominal effusion, ischemia on Doppler, bowel perforation). A saline enema was infused into the colon until the reduction was sonographically confirmed. The procedure was repeated if not efficient. Light sedation was practiced in some children. Results Eighty-tree percent of the reductions were successful with a median of 1 attempt. Reduction success decreased with the number of attempts but was still by 16% after 4 attempts. The early recurrence rates were 14.5%, and 61.2% of those had a successful second complete reduction. Forty-six patients needed surgery (11 of them had a secondary intussusception). Sedation multiplies success by 10. In this period, only one complication is described. Conclusion Ultrasound guided intussusception reduction by saline enema is an efficient and safe procedure. It prevents exposure of a young child to a significant amount of radiation, with similar success rate. We had very low complication rate (1/270 cases or 3‰). The success rate could be increased by standardized procedures including: systematic sedation, trained radiologists, accurate pressure measurement, and number and duration of attempts. © 2016 Elsevier Inc. Source

Behcet A.L.,University of Gaziantep | Kilic H.,Malatya State Hospital | Zengin S.,University of Gaziantep | Guler M.,University of Gaziantep | And 3 more authors.
Clinical and Applied Thrombosis/Hemostasis | Year: 2014

Purpose: The purpose of this study is to investigate the hispathological, biochemical, and clinical efficiency of Ankaferd Blood Stopper (ABS) in preventing postoperative intraabdominal adhesions. Method: A total of 40 Wistar albino species female rats were randomly separated into 4 groups. For the control group, 1 mL normal saline was administered; and for the second, third, and fourth groups 0.5, 1, and 2 mL, respectively, ABS was administered. Statistical analyses were evaluated with Tukey and analysis of variance test. Findings: Significant increase was observed in fibroblast and vascularization microscopically with increasing amount of ABS used. Degree of adhesion in the group administered with normal saline was lower compared to the other groups. Adhesion thickness and prevalence macroscopically increased with the increasing amount of ABS used in groups. Conclusion: It was determined in our study that ABS is not efficient in preventing intraabdominal adhesions; on the contrary, adhesions were increased with the increased amount of ABS used. © 2013 The Author(s). Source

Sanchez Gomez S.,Santander University | Torres Tabanera M.,Sanchinarro Hospital | Vega Bolivar A.,Santander University | Sainz Miranda M.,San Millan San Pedro de la Rioja Hospital | And 6 more authors.
European Journal of Radiology | Year: 2011

Objective: The purpose of our study was to perform a prospective assessment of the impact of a CAD system in a screen-film mammography screening program during a period of 3 years. Materials and methods: Our study was carried out on a population of 21,855 asymptomatic women (45-65 years). Mammograms were processed in a CAD system and independently interpreted by one of six radiologists. We analyzed the following parameters: sensitivity of radiologist's interpretation (without and with CAD), detection increase, recall rate and positive predictive value of biopsy, CAD's marks, radiologist's false negatives and comparative analysis of carcinomas detected and non-detected by CAD. Results: Detection rate was 4.3‰. CAD supposed an increase of 0.1‰ in detection rate and 1% in the total number of cases (p < 0.005). The impact on recall rate was not significant (0.4%) and PPV of percutaneous biopsy was unchanged by CAD (20.23%). CAD's marks were 2.7 per case and 0.7 per view. Radiologist's false negatives were 13 lesions which were initially considered as CAD's false positives. Conclusions: CAD supposed a significant increase in detection, without modifications in recall rates and PPV of biopsy. However, better results could have been achieved if radiologists had considered actionable those cases marked by CAD but initially misinterpreted. © 2011 Elsevier Ltd. All rights reserved. Source

Matthes T.,University of Geneva | Manfroi B.,Joseph Fourier University | Zeller A.,Medicine Faculty | Dunand-Sauthier I.,Medicine Faculty | And 3 more authors.
Leukemia | Year: 2015

Multiple myeloma (MM) invariably develops in the bone marrow (BM), indicating the strong requirement of this tumor for the peculiar BM microenvironment, rich in cytokine and hematopoietic precursor cells. Interleukin-6 (IL-6) and a proliferation inducing ligand (APRIL) are key cytokines implicated in MM development. Here, we show that MM cells changed the hematopoietic microenvironment early upon BM infiltration by strongly downregulating hematopoietic precursor cells from all lineages except myeloid precursor cells. Myeloid precursor cells constituted a major source of APRIL in MM-infiltrated BM, and their proliferative response to IL-6 upregulation explained their relative resistance to MM infiltration. The osteolytic molecule receptor activator of NF-kB ligand (RANK-L) expressed by MM cells started this myeloid proliferation by inducing in a contact-dependent manner IL-6 production by myeloid precursor cells themselves. Taken together, our data demonstrate that MM cells do not simply displace hematopoietic cells upon BM infiltration, but rather selectively modulate the BM microenvironment to preserve a pool of high APRIL-producing myeloid precursor cells. Our data also identify a positive regulation of APRIL by IL-6 in myeloid precursor cells. © 2015 Macmillan Publishers Limited All rights reserved. Source

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