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1.
An animal component free medium that promotes the growth of various animal cell lines for the production of viral vaccines 总被引:1,自引:0,他引:1
IPT-AFM is a proprietary animal component free medium that was developed for rabies virus (strain LP 2061) production in Vero cells. In the present work, we demonstrated the versatility of this medium and its ability to sustain the growth of other cell lines and different virus strains. Here, three models were presented: Vero cells/rabies virus (strain LP 2061), MRC-5 cells/measles virus (strain AIK-C) and BHK-21 cells/rabies virus (strain PV-BHK21). The cell lines were first adapted to grow in IPT-AFM, by progressive reduction of the amount of serum in the culture medium. After their adaptation, BHK-21 cells grew in suspension by forming clumps, whereas MRC-5 cells remained adherent. Then, kinetics of cell growth were studied in agitated cultures for both cell lines. In addition, kinetics of virus replication were investigated. 相似文献
2.
H. Krichen Y. Gorgi T. Dhaouadi Y. Mecheri I. Sfar R. Bardi M.M. Bacha E. Abderrahim S. Jendoubi-Ayed K. Ayed T. Ben Abdallah 《Transplantation proceedings》2013,45(10):3472-3477
BackgroundAcute and chronic rejections remain an important cause of graft loss after renal transplantation. Currently, activation of innate immune responses through Toll-like receptors (TLRs) is suspected to be implied in the loss of the transplant tolerance.ObjectivesWe investigated functional single nucleotide polymorphisms (SNPs) of TLR4 and its coreceptor CD14 in kidney transplantation and looked for any potential role in acute rejection (AR) and chronic allograft nephropathy (CAN) and impact on graft survival.Patients and MethodsTLR4 (Asp299Gly) and CD14 (C/T -159) SNPs were detected using polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) in 209 kidney transplant recipients (KTRs) including 132 treated with mycophenolate mofetil (MMF+). AR occurred in 59 patients and 24 were identified as having CAN by biopsy and scored according to the Banff criteria.ResultsThere were no significant associations between TLR4 and CD14 genotypes and alleles and the occurrence of both AR episodes and CAN. Moreover, TLR4 and CD14 SNPs did not seem to influence kidney graft survival. Analysis according to human leukocyte antigen (HLA) compatibility status, positivity of anti-HLA antibodies, and immunosuppression by MMF confirmed the absence of correlation of the investigated SNPs with the graft outcome. In addition, incidence of post-transplantation infections, including cytomegalovirus (CMV) infections, was not influenced by both TLR4 and CD14 SNPs.ConclusionThese results suggest that TLR4 (Asp299Gly) and CD14 (C/T -159) functional SNPs do not play a major role in AR, CAN, and kidney graft survival. Therefore, intragraft monitoring of TLR4/CD14 genes expression by messenger RNA (mRNA) would provide clarity on the exact role of these receptors in graft injuries. 相似文献
3.
N. Ben Salah W. El Borgi F. Ben Lakhal M. Ben Mansour E. Gouider Y. Gorgi R. Bardi B. Zoueri R. Hafsia 《Transfusion Clinique et Biologique》2014,21(6):314-319
AimEvaluate the anti-erythrocyte and anti-HLA immunization rates in hemoglobinopathies.Patients and methodsCross-sectional study (October 2009–March 2010) on 83 patients followed for hemoglobinopathies. The irregular antibodies research is realized by two techniques: indirect Coombs and enzymatic technique on gel cards. The search for anti-HLA class I antibodies is done by complement dependent lymphocytotoxicity.ResultsThe mean age was 30 years (14–64 years), the sex ratio M/F is 0.84. Our series included 42 cases of sickle cell disease (29 homozygous sickle cell anemia and 13 sickle-thalassemia) and 41 cases of thalassemia syndromes (26 major and 15 intermediate). The anti-erythrocyte alloimmunization rate is 10.84% without difference between thalassemia syndromes and sickle cell disease. The autoimmunization rate (22.89%) is higher in thalassemia syndromes (41.46%) than in the sickle cell disease (7.14%) (P < 0.001). The anti-HLA immunization rate is 31.6% without difference between thalassemia syndromes and sickle cell disease. The young age, transfusion at a young age and the total number of transfusions are the factors that increase the risk of anti-erythrocyte autoimmunization. No clinicobiological parameter does influence the anti-erythrocyte and anti-HLA alloimmunization. There is no significant association between anti-erythrocyte and anti-HLA immunization.ConclusionThe erythrocyte and anti-HLA anti-immunization rates are high in our series. Preventive strategy is needed to ensure optimal blood safety. 相似文献
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5.
Yalaoui S Gorgi Y Hajri R Goucha R Chaabouni L Kooli C Ayed K 《Joint, bone, spine : revue du rhumatisme》2002,69(2):173-176
Autoantibodies to ribosomal P proteins (anti-P) are directed against three ribosomal phosphoproteins (P0, P1, and P2) and are believed to be specific markers for systemic lupus erythematosus (SLE), particularly with neuropsychiatric manifestations. The objective of this study was to determine the rate of occurrence and clinical significance of anti-P in Tunisian patients. METHODS: We included 100 Tunisian patients with SLE whose sera were received between January 1998 and December 2000 by the immunology laboratory of the Charles Nicolle Teaching Hospital in Tunis, Tunisia, and were tested for anti-P. An immunodot technique based on a synthetic protein shared by all ribosomal phosphoproteins was used. RESULTS: Sera from 22 (22%) patients were positive for anti-P. This rate is consistent with the literature. We found no statistically significant associations between anti-P and specific manifestations of SLE. CONCLUSION. We found that anti-P were significantly associated with anti-Sm and anti-RNP, as reported previously. The significance of these associations remains debatable. 相似文献
6.
7.
Cherif M Ounissi M Karoui C Boubaker K Helal I Ben Hamida F Abderrahim E El Younsi F Kheder A Derouich A Sfaxi M Ben Slama R Chebil M Bardi R Sfar I Ben Abdallah T Gorgi Y 《Transplantation proceedings》2010,42(10):4311-4313
Despite initiatives to increase cadaveric donation, there is still a shortfall in donor organs. Kidneys from living donors now makes a significant contribution to increasing the number of organs available for transplantation in Tunisia. We performed a retrospective study of 405 kidney transplantations, including 321 (79.3%) from living donors performed from June 1986 to December 2007. We obtained information on only 162 (50.4%), namely, 64 men (39.5%) and 98 women (60.5%), whose mean age at the time of donation was 42.3 ± 12.2 years. Twelve (8.22%) perioperative complications occurred: wound infections (n = 4), pneumothorax (n = 4), phlebitis (n = 1), hematomas (n = 2), and urinary infection (n = 1). The mean follow-up period was 117.4 ± 74.4 months. Hypertension occurred in 42 donors (25.9%) with mean values of 134 ± 20 for systolic and 79 ± 10 for diastolic blood pressure. Twelve donors (7.4%) developed proteinuria (mean proteinuria, 0.08 ± 1.25 g/d). Renal insufficiency was found in 28 donors (19.44%), 2 of whom developed chronic renal failure requiring dialysis at intervals of 36 and 84 months. In both cases, we diagnosed a familial form of focal segmental glomerulosclerosis. Two donors (1.2%) died within 10 years after kidney donation due to senility. The relatively favorable outcomes suggest that living-donor kidney transplantation is an acceptable approach, in view of the superior results it yields in recipients. However, efforts to increase the number of cadaveric donors in Tunisia should be made. It is also important to develop a registry of long-term kidney function after kidney donation. 相似文献
8.
Ben Radhia K Ayed-Jendoubi S Sfar I Ben Romdhane T Makhlouf M Gorgi Y Ayed K 《Joint, bone, spine : revue du rhumatisme》2008,75(2):172-175
ObjectiveThe human leukocyte antigen HLA-B27 is a class I antigen of the major histocompatibility complex strongly associated with ankylosing spondylitis (AS) and other related spondyloarthropathies (SpAs). The mechanism of this association remains unknown. HLA-B27 is a serologic specificity that represents a family of at least 25 different HLA-B27 alleles (2701–2725). These alleles are closely related by nucleotide sequence homology, but differ in ethnic distribution. The purpose of the present study is to investigate the distribution of HLA-B27 alleles in healthy controls and in patients with ankylosing spondylitis (AS).MethodsWe selected 160 HLA-B27-positive individuals (39 controls and 121 patients with ankylosing spondylitis). Typing of HLA-B27, and Cw alleles were performed by polymerase chain reaction amplification with sequence specific primers (PCR–SSP), and by serological typing (microlymphocytotoxicity).ResultsSeven B27 subtypes were identified: B*2702, 03, 04, 05, 07, 09 and B*2714. The distribution of these alleles in the population of patients was B*2702 (47.1%) and B*2705 (47.1%). These subtypes were also detected in 16 (41%) and 16 (41%), respectively of the 39 control subjects. HLA-B*2707 was detected in 4 (3.31%) patients and in 3 (7.6%) controls. B*2704, 09 and B*2714 were relatively rare and were detected in one subject each. No significant differences were noticed in the frequencies and distribution of HLA-B27 alleles between patients and controls.ConclusionsOur results show a restricted number of HLA B27 subtypes associated with AS. B*2702 and B*2705 were equally common in patients and controls. The most prominent B27/Cw haplotypes in the patient groups and controls were B*2702/Cw02022 and B*2705/Cw02022. 相似文献
9.
Béji S Abderrahim E Kaaroud H Jebali H Ben Abdallah T El Younsi F Ben Moussa F Ben Hamida F Sfaxi A Blah M Chebil M Ayed M Bardi R Gorgi Y Kheder A 《Transplantation proceedings》2007,39(8):2580-2582
Arterial hypertension often present after kidney transplantation is of multifactorial origin. The aim of this study was to determine the role of donor and recipient factors in the development of hypertension after renal transplantation. We retrospectively analyzed the data of 280 patients transplanted between 1985 and 2005, who still had functioning grafts at 1 year after transplantation. We recorded donor and recipient parameters. One hundred eighty-seven patients (66.8%) were hypertensive. Upon multivariate analysis of recipient factors, pretransplant hypertension (odds ratio) [OR]: 8.5, 95% confidence interval [CI]: 4.5 to 16.1); serum creatinine level > 130 micromol/L at 6 months (OR: 2.5, 95% CI: 1.3 to 4,7), male gender (OR: 2.02, 95% CI: 1.2 to 3.4), and chronic rejection (OR: 2.4, 95% CI: 1.2 to 4.7) were independent predisposing factors. Among donor factors, age was significantly associated with arterial hypertension upon univariate analysis. In conclusion, recipient factors, especially pretransplant hypertension, contribute to the disorder in renal transplant patients. 相似文献
10.
Clearance and persistence of hepatitis C virus in a Tunisian population: association with HLA class I and class II 总被引:1,自引:0,他引:1
Ksiaa L Ayed-Jendoubi S Sfar I Gorgi Y Najjar HA Abdallah TB Ayed K 《Viral immunology》2007,20(2):312-319
Human leukocyte antigens (HLAs) of class I and class II are reported to influence the outcome of hepatitis C virus (HCV) infection. The aim of this study was to assess the role of HLA class I and class II in influencing spontaneous viral clearance or persistence in HCV-infected patients. HLA class I (A and B) typing was performed by lymphocytotoxicity test and HLA class II (DRB1) was determined by low-resolution PCR-SSP (polymerase chain reaction amplification with sequence-specific primers) for 99 subjects (48 men and 51 women). Of these, 75 had chronic infection and 24 had viral clearance. No significant differences were observed between individuals with spontaneous viral clearance or chronic HCV infection for age, sex, source of infection, and risk factors. HLAB-w35 and HLA-DRB1*08 occurred more frequently in those with viral clearance (21.7 and 16.6%, respectively) compared with those with chronic infection (5.5 and 2.6%; p < 0.04 and p < 0.01, respectively). DRB1*15 occurred more often in those with chronic infection (29.3%) compared with those with viral clearance (16.66%), but the difference did not reach statistical significance. These results support the hypothesis that specific HLA class I and class II alleles might influence the clearance or persistence of HCV infection. Both Bw35 and DRB1*08 are associated with clearance of circulating HCV whereas DRB1*15 appears to predispose to progression of liver disease in Tunisian patients. Taken together, our results and those previously reported suggest that HLA associations with the outcome of hepatitis C viremia vary in relation to the ethnicity of the population studied. Further prospective studies of larger cohorts of HCV-infected subjects are needed to evaluate, in different populations, the role of specific HLA class I and class II alleles in the outcome of HCV infection. 相似文献