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115篇 您的检索式:作者名="Sfar"
    题名 作者 年代 出处 被引量
1A roadmap for security challenges in the Internet of Things显示文摘Arbia Riahi Sfar Enrico Natalizio Yacine Challal Zied Chtourou 2018Digital Communications and Networks2018,4,2:5
2Cytokine and apoptosis gene polymorphisms influence the outcome of hepatitis C virus infection显示文摘BACKGROUND:Hepatitis C virus (HCV) infection is thought to be chronic and the factors leading to viral clearance or persistence are poorly understood.This study was undertaken to investigate the possibility of a significant relationship between the spontaneous clearance or the persistence of hepatitis C virus (HCV) infection and cytokine and apoptosis gene polymorphisms in Tunisian patients on hemodialysis.METHODS:Polymorphisms of the genes IL-1 (-889 IL-1α,-511 and +3954 IL-1β,IL-1Ra),IL-18 (-137 and-607),IL-12 (-1188) and Apo1/Fas (-670) were determined by PCR-RFLP,PCR-SSP and PCR-VNTR in 100 healthy blood donors and 100 patients infected with HCV and undergoing hemodialysis.The patients were classified into two groups:G1 consisted of 76 active chronic hepatitis patients (positive for HCV RNA) and G2 consisted of 24 hemodialysed patients who spontaneously eliminated the virus (negative for HCV RNA).RESULTS:The frequency of genotype association [-137GC/-607CA] IL-18 was higher in G2 (41.7%) than in G1 (15.8%) (P=0.008;OR=0.26;95% CI,0.10-0.73).We also found a higher frequency of the AA genotype of the Apo1/Fas gene in G2 (41.6%) than in G1 (17.5%) (P=0.026;OR=3.49;95% CI,1.13-10.69).Adjustment for known covariate factors (age,gender and genotype) confirmed these univariate findings and revealed that the genotype association GC-CA of the (-137 and-607) IL-18 gene and the AA genotype of the Apo1/Fas gene were associated with the clearance of HCV (P=0.041 and 0.017,respectively).CONCLUSION:The two genotypes GC-CA of the (-137 and-607) IL-18 polymorphism and the AA genotype of the Apo1/Fas gene influence the outcome of HCV infection in Tunisian patients on hemodialysis.Leila Ksiaa Cheikhrouhou Imen Sfar Hajer Aounallah-Skhiri Houda Aouadi Salwa Jendoubi-Ayed Taieb Ben Abdallah Khaled Ayed Yousr Lakhoua-Gorgi 2011Hepatobiliary & Pancreatic Diseases International2011,10,3:4
3Association of Fas/Apo1 gene promoter (-670 A/G) polymorphism in Tunisian patients with IBD显示文摘AIM: To detect a possible association between the polymorphism of the (-670 A/G) Fas/Apo1 gene promoter and susceptibility to Crohn's disease (CD) and ulcerative colitis (UC) in the Tunisian population. METHODS: The (-670 A/G) Fas polymorphism was analyzed in 105 patients with CD, 59 patients with UC, and 100 controls using the polymerase chain reaction restriction fragment length polymorphism method. RESULTS: Significantly lower frequencies of the Fas -670 A allele and A/A homozygous individuals were observed in CD and UC patients when compared with controls. Analysis of (-670 A/G) Fas polymorphism with respect to sex in CD and UC showed a significant difference in A/A genotypes between female patients and controls (P corrected = 0.004 in CD patients and P corrected = 0.02 in UC patients, respectively). Analysis also showed a statistically significant association between genotype AA of the (-670 A/G) polymorphism and the ileum localization of the lesions (P corrected = 0.048) and between genotype GG and the colon localization (Pcorrected = 0.009). The analysis ofinflammatory bowel disease patients according to clinical behavior revealed no difference. CONCLUSION: Fas-670 polymorphism was associated with the development of CD and UC in the Tunisian population.Walid Ben Aleya Imen Sfar Leila Mouelhi Houda Aouadi Mouna Makhlouf Salwa Ayed-Jendoubi Samira Matri Azza Filali Taoufik Najjar Taeib Ben Abdallah Khaled Ayed Yousr Gorgi 2009World Journal of Gastroenterology2009,15,29:3
4Natural evolution of hepatitis C virus infection in hemodialysis Tunisian patients and CTLA-4 SNP's显示文摘AIM: To analyze the polymorphisms of CTLA-4 gene involved in the response against hepatitis C virus(HCV) infection.METHODS: We recruited 500 hemodialysed patients from several hemodialysis centers, all HCV-antibody positive, spread over different regions of Tunisia, as part of a national survey in 2008 conducted in the laboratory of immunology at the Charles Nicolle hospital Tunisia, classified into two groups G1(PCR+) and G2(PCR-) according to the presence or absence of viral RNA. Of these patients, 307 were followed prospectively on a viral molecular level over a period from 2002 to 2008, divided into two groups based on the persistence and viral clearance. PCR-RFLP was performed for the analysis of SNPs(+49) A/G and(+6230) G/A CTLA-4 for these 500 patients and 358 healthy controls.RESULTS: Analysis of clinical and virological charac-teristics of our cohort suggests a nosocomial infection in our hemodialysed patients with transfusion history as a primary risk factor and a predominance of genotype 1b. The haplotype analysis revealed an increase of frequencies of GG(+49)/(CT60) CTLA-4 in the entire patients group compared to controls(P = 0.0036 and OR = 1.42; 95%CI: 1.12-1.79, respectively). This haplotype is therefore associated with susceptibility to HCV infection. CONCLUSION: Our study suggests a possible role of CTLA-4 polymorphisms in the outcome of HCV infection in the Tunisian hemodialysed population.Leila Ksiaa Cheikhrouhou Yousr Lakhoua-Gorgi Imen Sfar Salwa Jendoubi-Ayed Houda Aouadi Mouna Makhlouf Khaled Ayed Taieb Ben Abdallah 2015World Journal of Gastroenterology2015,21,35:2
5Assessment of TBC systems failure mechanisms using a fracture mechanics approach显示文摘Aktaa J Sfar K Munz D 2005Acta Materialia2005,53,:1
6A repeat polymorphism in interleukin-4 gene is highly associated with specific clinicalphenotypes of asthma显示文摘Chouchane L Sfar I 2007Int Arch Allergy Immunol2007,120,:1
7Anti-CCP antibodies, rheumatoid factors and anti-keratin antibodies: clinical value in established rheumatoid arthritis显示文摘Amri M Sfar I Ounallah HS 2011Tunis Med2011,89,3:1
8Numerical investigation of residual stress fields and crack behavior in TBC systems 显示文摘Sfar K Aktaa J Munz D 2002Materials Science and Engineering2002,333,:1
9Numerical investigations of residual stress fields and crack behavior in TBC systems 显示文摘Sfar K Aktaa J Munz D 2002Materials Science and Engineering2002,333,2:1
10Scintigraphic findings in hungry bone syndrome following parathyroidectomy显示文摘Ajmi S Sfar R Trimeche S 2010Rev Esp Med Nucl2010,29,2:1
11Numerical investigations of residual stress fields and crack behavior in TBC systems 显示文摘Sfar K Aktaa J Munz D 2002Materials Science and Engineering2002,333,:1
12Role of immune system,apop-tosis and angiogenesis in pathogenesis of rheumatoid arthritis and jointdestruction显示文摘Dhaouadi T Sfar I Abelmoula L el al 2007Tunis Med2007,85,12:1
13Optimal antenna selection based on capacity maximization for MIMO systems in correlated channels 显示文摘Dai L Sfar S Letaief K B 2006IEEE Transactions on Communications IEEE USA Mar2006,54,3:1
14Assessment of TBC systems failure mechanisms using a fracture mechanics approach 显示文摘Aktaa J Sfar K Munz D 2005Aeta Materialia2005,53,16:1
15An efficient detector for combined space -time coding and layered processing显示文摘Dai Lin Sfar Sana Letaief K B 2005IEEE transcommun2005,53,9:1
16Assessment of TBC systems failure mechanisms using a fracture mechanics approach显示文摘J. Aktaa K. Sfar D. Munz 2005Acta Materialia2005,,16:1
17Comprehensive analysis of PTEN status in breast carcinomas显示文摘Jones N Bonnet F Sfar S 2013Int J Cancer2013,133,2:1
18显示文摘Sfar S F A 2011Ann Fr Anesth Reanim2011,30,3:1
19TSP1 and MMP9 genetic variants in sporadic prostate cancer显示文摘Sfar S Saad H Mosbah F Gabbouj S Chouchane L 2007Cancer Genet Cytogenet2007,172,:1
20Antenna Selection for MIMO Systems with Closely Spaced Antennas显示文摘YANG Y BLUM R S SFAR S 2009EURASIP Journal on Wireless Communications and Networking2009,,1:1
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