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Laftavi MR, Pankewycz O, Patel S, Nader N, Kohli R, Feng L, Said M, Dayton M. African American renal transplant recipients (RTR) require higher tacrolimus doses to achieve target levels compared to white RTR: does clotrimazole help? Transplant Proc 2014; 45:3498-501. [PMID: 24314941 DOI: 10.1016/j.transproceed.2013.09.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
The number of African Americans (AAs) on the kidney waiting list is increasing in the United States. Several studies showed that AAs are at higher risk for rejection and graft loss. Because of genetic polymorphisms, AAs may metabolize calcineurin inhibitors faster than Caucasian (C) individuals. The goal of this study is to evaluate the tacrolimus (TAC) dose required to reach therapeutic levels and to assess the impact of clotrimazole on TAC metabolism in AAs compared to C patients. One hundred forty-two AA renal transplant recipients (RTRs) were compared to 309 C RTRs. Demographics were similar in both groups. Induction therapy and maintenance immunosuppression were similar in both groups and included TAC, mycophenolate acid (MPA), and steroids. The goal in all RTRs was to maintain a 12-hour trough level of 10 to 15 ng/mL in the first 3 months, 8 to 10 ng/mL for the first year, and 5 to 8 ng/mL thereafter. To achieve these levels, AA RTRs require a significantly higher dosage of TAC compared to C patients (5.9 ± 2.9 vs 3.6 ± 2 mg/d, respectively, P < .0001). By multivariate analysis, TAC dose requirements were not affected by age, gender, MPA or prednisone dose, diabetes, and renal function. Adding clotrimazole (CTM) to the RTR regimen significantly reduced the TAC dose requirements in all RTRs. When CTM was used, the TAC dose requirement was not statistically significantly different between AA and C patients (2.6 ± 1.2 mg/d vs 1.8 ± 1.5 mg/d, P = .07). We conclude that AAs required a higher TAC dose to reach the desired trough level in RTRs compared to C RTRs. The use of CTM eliminates the need for higher doses of TAC in AA RTRs. Thus, CTM may aid AA RTRs in achieving therapeutic TAC levels while reducing drug costs.
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Fathy M, Al Ansary M, Zakaria M, Abdel-Hafiz H, Said M. Role of vascular endothelial growth factor (VEGF) in diagnosis of pleural effusion of different origins. EGYPTIAN JOURNAL OF CHEST DISEASES AND TUBERCULOSIS 2014. [DOI: 10.1016/j.ejcdt.2014.02.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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Said M, Elshihawy H. Synthesis, anticancer activity and structure-activity relationship of some anticancer agents based on cyclopenta (b) thiophene scaffold. PAKISTAN JOURNAL OF PHARMACEUTICAL SCIENCES 2014; 27:885-892. [PMID: 25015456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Methods for the synthesis of new heterocyclic systems of thieno (3,2-d)- (1,2,3)-triazine derivatives and N-(3-cyano-5,6-dihydro-4H-cyclopenta (b) thiophene derivatives have been developed. The newly synthesized compounds were tested in vitro against human breast carcinoma cell line (MCF-7). Compounds 7 and 9 have shown the highest activity among the two synthesized series. The results of this study have led to the identification of two lead compounds with good inhibitory activities that can confirm the design of the next generation inhibitors of tyrosine kinase with fewer side effects such as hepatotoxicity and resistance.
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Soliman K, Mogadam E, Laftavi M, Patel S, Feng L, Said M, Pankewycz O. Long-Term Outcomes Following a Calcineurin Sparing Protocol After Renal Transplantation. Transplantation 2014. [DOI: 10.1097/00007890-201407151-01812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Said M, Ismail F, Dangor Y, Mbelle N. Comparison of the Xpert® GBS to the Granada mediumfor rapid intrapartum detection of GBS colonization. Int J Infect Dis 2014. [DOI: 10.1016/j.ijid.2014.03.1109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Wallace RM, Stanek D, Griese S, Krulak D, Vora NM, Pacha L, Kan V, Said M, Williams C, Burgess TH, Clausen SS, Austin C, Gabel J, Lehman M, Finelli LN, Selvaggi G, Joyce P, Gordin F, Benator D, Bettano A, Cersovsky S, Blackmore C, Jones SV, Buchanan BD, Fernandez AI, Dinelli D, Agnes K, Clark A, Gill J, Irmler M, Blythe D, Mitchell K, Whitman TJ, Zapor MJ, Zorich S, Witkop C, Jenkins P, Mora P, Droller D, Turner S, Dunn L, Williams P, Richards C, Ewing G, Chapman K, Corbitt C, Girimont T, Franka R, Recuenco S, Blanton JD, Feldman KA. A large-scale, rapid public health response to rabies in an organ recipient and the previously undiagnosed organ donor. Zoonoses Public Health 2014; 61:560-70. [PMID: 24673934 DOI: 10.1111/zph.12105] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2013] [Indexed: 11/29/2022]
Abstract
This article describes and contrasts the public health response to two human rabies cases: one organ recipient diagnosed within days of symptom onset and the transplant donor who was diagnosed 18 months post-symptom onset. In response to an organ-transplant-related rabies case diagnosed in 2013, organ donor and recipient investigations were conducted by multiple public health agencies. Persons with potential exposure to infectious patient materials were assessed for rabies virus exposure. An exposure investigation was conducted to determine the source of the organ donor's infection. Over 100 persons from more than 20 agencies spent over 2700 h conducting contact investigations in healthcare, military and community settings. The 564 persons assessed include 417 healthcare workers [5.8% recommended for post-exposure prophylaxis (PEP)], 96 community contacts (15.6% recommended for PEP), 30 autopsy personnel (50% recommended for PEP), and 21 other persons (4.8% recommended for PEP). Donor contacts represented 188 assessed with 20.2% recommended for PEP, compared with 5.6% of 306 recipient contacts recommended for PEP. Human rabies cases result in substantial use of public health and medical resources, especially when diagnosis is delayed. Although rare, clinicians should consider rabies in cases of encephalitis of unexplained aetiology, particularly for cases that may result in organ donation.
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Elshihawy H, Helal MA, Said M, Hammad MA. Design, synthesis, and enzyme kinetics of novel benzimidazole and quinoxaline derivatives as methionine synthase inhibitors. Bioorg Med Chem 2013; 22:550-8. [PMID: 24268539 DOI: 10.1016/j.bmc.2013.10.052] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2013] [Revised: 10/19/2013] [Accepted: 10/29/2013] [Indexed: 12/14/2022]
Abstract
Methionine synthase catalyzes the transfer of a methyl group from 5-methyltetrahydrofolate to homocysteine, producing methionine and tetrahydrofolate. Benzimidazole and deazatetrahydrofolates derivatives have been shown to inhibit methionine synthase by competing with the substrate 5-methyltetrahydrofolate. In this study, a novel series of substituted benzimidazoles and quinoxalines were designed and assessed for inhibitory activity against purified rat liver methionine synthase using a radiometric enzyme assay. Compounds 3g, 3j, and 5c showed the highest activity against methionine synthase (IC₅₀: 20 μM, 18 μM, 9 μM, respectively). Kinetic analysis of these compounds using Lineweaver-Burk plots revealed characteristics of mixed inhibition for 3g and 5c; and uncompetitive inhibition for 3j. Docking study into a homology model of the rat methionine synthase gave insights into the molecular determinants of the activity of this class of compounds. The identification of these drug-like inhibitors could lead the design of the next generation modulators of methionine synthase.
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Swellam M, Khaial A, Mosa T, El-Baz H, Said M. Anti-mullerian and androgens hormones in women with polycystic ovary syndrome undergoing IVF/ICSI. IRANIAN JOURNAL OF REPRODUCTIVE MEDICINE 2013; 11:883-90. [PMID: 24639712 PMCID: PMC3941393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Received: 02/04/2013] [Revised: 06/15/2013] [Accepted: 08/04/2013] [Indexed: 11/05/2022]
Abstract
BACKGROUND Despite its frequency, the polycystic ovary syndrome (PCOS) is still a difficult diagnosis in endocrinology, gynecology, and reproductive medicine. The Rotterdam consensus conference proposed to include the ultrasonographic follicle count as a new diagnostic criterion. Unfortunately, its assessment does not offer sufficient reliability worldwide. OBJECTIVE To explore the possible roles of altered circulating androgens and anti-mullerian hormone among PCOS women regarding their body mass index and their outcomes after IVF. MATERIALS AND METHODS In this cross sectional study, 195 women with PCO were included, they were divided according to their body mass index (BMI <27 kg/m(2)) as obese PCOS (n=91) and overweight PCOS (BMI ≥27 kg/m(2)) (n=104). Serum levels of androgens (dehydroepiandrosterone sulfate [DHEAS], testosterone and androstenedione [A4]), and anti-mullerian hormone (AMH) were assessed and compared with the endocrine profile and cycles outcomes. RESULTS AMH, A4, FSH, and TSH concentrations were significantly higher in obese than in overweight women (p˂0.001). Contrary, LH: FSH ratio values, E2, PRL and DAHE-S levels were significantly lower in obese than in overweight women (p˂0.0001). Total oocyte retrieved, mature and fertilized oocyte were significantly higher in obese than in overweight women. Among pregnant obese PCOS women both AMH and A4 were significantly increased and DAHE-S was significantly decreased compared to pregnant overweight PCOS women. CONCLUSION Obese PCOS women have a higher chance of getting pregnant over those categorized as overweight PCOS. Also, androgens and AMH levels recommended to be considered in IVF attributes among obese and overweight PCOS women.
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Abdel-Rahman M, Saad Y, El-Raziky M, Zayed N, El-Akel W, Said M, El-Beshlawy M, Esmat G. Hepatitis C genotype 4 with normal transaminases: correlation with fibrosis and response to treatment, a cohort Egyptian study of 4277 patients. Clin Res Hepatol Gastroenterol 2013; 37:479-84. [PMID: 23540379 DOI: 10.1016/j.clinre.2013.02.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2012] [Revised: 01/29/2013] [Accepted: 02/14/2013] [Indexed: 02/04/2023]
Abstract
BACKGROUND AND OBJECTIVE Chronic hepatitis C virus (HCV) patients with persistently normal transaminases represent a subgroup of patients with mild, slowly progressive disease, natural history, and optimal management of these patients needs to be investigated in Egypt. Our aim is to assess the severity of hepatic fibrosis and response to therapy in a cohort of Egyptian HCV patients with normal transaminases. PATIENTS AND METHODS Retrospective demographics, laboratory, histological features and treatment outcome of patients included in the national program for the control of viral hepatitis in Egypt since 2007 were collected. Combined pegylated IFN/ribavirin therapy was given for patients with fibrosis stage ≥ F1 and elevated transaminases while those with normal transaminase; therapy was initiated only in patients with fibrosis stage ≥ F2. RESULTS Normal ALT and AST were detected in 1308/4277 (30.6%) and 1662/4277 (38.9%) patients, respectively, while both enzymes were normal in 943 patients (22%). Multivariate regression analysis showed that lower AFP and higher platelets count (compared with elevated transaminases group) were significantly correlated with normal transaminases (P<0.01), however, HCV-RNA levels did not show such significance. The number of patients with HAI score ≥ A1 was significantly lower in normal than elevated transaminases (36.5% vs 40.9%, respectively, P<0.01) and patients with fibrosis ≥ F2 was significantly lower in normal than elevated transaminases (36.4%) and (43%), respectively (P<0.01). There was no significant correlation between baseline transaminases levels and response to treatment. CONCLUSION Normal transaminases are frequently encountered in chronic HCV Egyptian patients (22%). They show low AFP level, mild degree of activity and stage of fibrosis with no correlation with response to therapy.
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Saad Y, Said M, Idris MO, Rabee A, Zakaria S. Liver stiffness measurement by fibroscan predicts the presence and size of esophageal varices in egyptian patients with HCV related liver cirrhosis. J Clin Diagn Res 2013; 7:2253-7. [PMID: 24298490 DOI: 10.7860/jcdr/2013/6026.3484] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2013] [Accepted: 06/11/2013] [Indexed: 12/26/2022]
Abstract
BACKGROUND AND AIM Liver stiffness measured by transient elastgraphy correlates with Hepatic vein pressure gradient, liver Stiffness value of 21 kpa predicts significant portal hypertension. Aim is to predict esophageal varices presence by fibroscan and possible grading by degree of liver stiffness in HCV related cirrhotic patients. MATERIAL AND METHODS Thirty two HCV related cirrhotic patients were recruited, age > 18 years, BMI< 35, no history of: upper GI bleeding, hepatocellular carcinoma, abdominal collaterals, ascites. Patients underwent clinical examination, laboratory investigations, abdominal ultrasonography, upper endoscopy and fibroscan. They divided into (Group I= no varices, Group II =small varices (Grade 1 & 2), Group III = large varices (Grade 3 & 4). RESULTS Age is higher in Group III than I & II (55+6.6 vs 49.5+4.7 & 48.9+4.7, p-value 0.04) respectively, Groups were gender & BMI matched, fibroscan values in Group I vs II & III were 27 Vs 49.4, p value 0.01, cutoff 29.7 Kpa (sensitivity 95% & specificity 67%) while its value in Group II vs III were 38.4 vs 60.4, p value 0.002, cutoff 38.2 Kpa (sensitivity 100% & specificity77.3%). Platelet count, splenic size, platelet count/splenic size in Group I vs II & III were 107.166 vs 72.900, 13.8 vs 15.4, 803.6 vs 478, p value 0.01, 0.008, 0.005, cutoff 80.000, 14.5, 545, sensitivity & specificity (85%&75%, 75%&75%, 85%&84%) respectively. On multivariate analysis fibroscan (OR 1.113; p=0.005) & platelet count/splenic size (OR 0.995; p=0.012) were positive predictors of esophageal varices presence. CONCLUSION Fibroscan is a good non-invasive method to predict esophageal varices presence & possible grading with high sensitivity.
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Monier S, El-Gangehie M, Said M, Barakat A. Computer-guided mandibular fracture treatment. Int J Oral Maxillofac Surg 2013. [DOI: 10.1016/j.ijom.2013.07.463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Patel S, Pankewycz O, Said M, Feng L, Laftavi M. Delayed Graft Function in the Era of Pulsatile Pump Perfusion. J Surg Res 2013. [DOI: 10.1016/j.jss.2012.10.276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Aid Sobhy K, Elawady S, Abdel Latef S, Abou Zeid A, Said M. Patterns of drug resistance in cases of smear positive pulmonary tuberculosis in Giza and Cairo governorates. EGYPTIAN JOURNAL OF CHEST DISEASES AND TUBERCULOSIS 2012. [DOI: 10.1016/j.ejcdt.2012.09.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Moncef C, Said M, Olfa N, Dagbaji G. Influence of morphological characteristics on physical and physiological performances of tunisian elite male handball players. Asian J Sports Med 2012; 3:74-80. [PMID: 22942992 PMCID: PMC3426725 DOI: 10.5812/asjsm.34700] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/05/2011] [Accepted: 12/18/2011] [Indexed: 11/22/2022] Open
Abstract
Purpose The purpose of this study was to describe the body structure and morphological characteristics of Tunisian elite handball players, and to determine the effect of these variables on functional and physical performance levels. Methods A sample of 42 male handball players (mean age 21.98±3.24 years; training duration 12 years) at international level was submitted to a test battery comprising morphological, physical and physiological assessments. Tests were yo-yo intermittent recovery test, squat jump test, countermovement jump test, vertical-jump test, and Repeated sprint Ability. Measures for assessment of anthropometric characteristics were age, size, weight, body mass index, body fat, fat mass and thin mass. Results Weight was negatively correlated to the squat jump and the countermovement jump performance. Age, weight, and body composition measures (fat and thin body mass) were additionally negatively related to the maximal oxygen uptake, and to the maximal velocity obtained in the Yo-Yo recovery test. No relationship was found between size, body mass index, body fat and the physical abilities considered. Concerning the effects of physical characteristics on the functional performances, we can note a positive relationship between squat jump, countermovement jump, and the yo-yo recovery test performance. No relationship was found between vertical jump, repeated sprint ability, and the physiological performances. Conclusions Study results point to the existence of strong correlation between morphological and physical characteristics with functional characteristics. In handball, it is possible to have a reliable estimate of anthropometric measurements, physical and physiological performances.
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Cherif M, Said M, Chaatani S, Nejlaoui O, Gomri D, Abdallah A. The effect of a combined high-intensity plyometric and speed training program on the running and jumping ability of male handball players. Asian J Sports Med 2012; 3:21-8. [PMID: 22461962 PMCID: PMC3307963 DOI: 10.5812/asjsm.34721] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2011] [Accepted: 08/05/2011] [Indexed: 12/02/2022] Open
Abstract
Purpose The aim of this study was to investigate the effect of a combined program including sprint repetitions and drop jump training in the same session on male handball players. Methods Twenty-two male handball players aged more than 20 years were assigned into 2 groups: experimental group (n=11) and control group (n=11). Selection was based on variables “axis” and “lines”, goalkeepers were not included. The experimental group was subjected to 2 testing periods (test and retest) separated by 12 weeks of an additional combined plyometric and running speed training program. The control group performed the usual handball training. The testing period comprised, at the first day, a medical checking, anthropometric measurements and an incremental exercise test called yo-yo intermittent recovery test. 2 days later, participants performed the Repeated Sprint Ability test (RSA), and performed the Jumping Performance using 3 different events: Squat jump (SJ), Countermovement jump without (CMJ) and with arms (CMJA), and Drop jump (DJ). At the end of the training period, participants performed again the repeated sprint ability test, and the jumping performance. Results The conventional combined program improved the explosive force ability of handball players in CMJ (P=0.01), CMJA (P=0.01) and DJR (P=0.03). The change was 2.78, 2.42 and 2.62% respectively. No significant changes were noted in performances of the experimental group at the squat jump test and the drop jump with the left leg test. The training intervention also improved the running speed ability of the experimental group (P=0.003). No statistical differences were observed between lines or axes. Conclusion Additional combined training program between sprint repetition and vertical jump in the same training session positively influence the jumping ability and the sprint ability of handball players.
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Yosry A, Said M, Esmat G, Al-Serafy M, Omar A, Doss W, Omran D, Saad Y, Kamel S, Abdel-Bary A, Hatata Y, Hosny A. HLA tissue typing has no effect on the outcome of patients undergoing a living-donor liver transplant: a single-center experience in Egypt. EXP CLIN TRANSPLANT 2012; 10:136-40. [PMID: 22432757 DOI: 10.6002/ect.2011.0066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVES To analyze the effect of human leukocyte antigen tissue typing on outcome of live-donor liver transplant. MATERIALS AND METHODS Fifty recipients underwent live-donor liver transplant in the Dar Al-Fouad Hospital in Egypt and were retrospectively evaluated. Patients were classified into 2 groups: those with human leukocyte antigen +ve, and those with human leukocyte antigen -ve and donors. Hepatitis C virus-related end-stage liver disease was the main indication for transplant. Demographic data, preoperative laboratory data, results of human leukocyte antigen tissue typing, Child score, model for end-stage liver disease score, graft/recipient weight-ratio, ischemia times, surgical complications, postoperative laboratory data, liver biopsy, immunosuppression, and pulse steroids were collected. Graft and patient survivals were studied using Kaplan-Meier curves. RESULTS The mean model end-stage liver disease score was 18 ± 3.61 in group 1 and 17.73 ± 3.72 in group 2, with no significant difference. Graft/recipient weight ratio, ischemia times, and postoperative complications showed P = NS. Cyclosporine and tacrolimus were used in 5/9, 8/41, and 4/9 in group 1, and 32/41 in group 2 (P = NS). Rejection and pulse steroids were reported in 3/9 and 12/41 of group 1, and 3/12 and 11/41 of group 2 (P = NS). Hepatitis C virus-recurrence was diagnosed in 5/9 of patients (55%) and 8/41 of patients (29.5%) in groups 1 and 2 (P < .05). No statistical difference was found regarding mortality; 5-year patient and graft survival was 35/50 (70% in group 1 [human leukocyte antigen +ve]), 7/9 (77.8%), and 28/41 in group 2 (68.3%) (human leukocyte antigen -ve). CONCLUSIONS Positive human leukocyte antigen typing before live-donor liver transplant has no effect on the incidence of postoperative complications, rejection episodes, and patient or graft survival. Recipients with positive human leukocyte antigen typing may have increased risk of hepatitis C virus-recurrence after live-donor liver transplant.
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Said M, Becerra R, Valverde CA, Kaetzel MA, Dedman JR, Mundiña-Weilenmann C, Wehrens XH, Vittone L, Mattiazzi A. Calcium-calmodulin dependent protein kinase II (CaMKII): a main signal responsible for early reperfusion arrhythmias. J Mol Cell Cardiol 2011; 51:936-44. [PMID: 21888910 DOI: 10.1016/j.yjmcc.2011.08.010] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/26/2011] [Revised: 07/28/2011] [Accepted: 08/12/2011] [Indexed: 11/19/2022]
Abstract
To explore whether CaMKII-dependent phosphorylation events mediate reperfusion arrhythmias, Langendorff perfused hearts were submitted to global ischemia/reperfusion. Epicardial monophasic or transmembrane action potentials and contractility were recorded. In rat hearts, reperfusion significantly increased the number of premature beats (PBs) relative to pre-ischemic values. This arrhythmic pattern was associated with a significant increase in CaMKII-dependent phosphorylation of Ser2814 on Ca(2+)-release channels (RyR2) and Thr17 on phospholamban (PLN) at the sarcoplasmic reticulum (SR). These phenomena could be prevented by the CaMKII-inhibitor KN-93. In transgenic mice with targeted inhibition of CaMKII at the SR membranes (SR-AIP), PBs were significantly decreased from 31±6 to 5±1 beats/3min with a virtually complete disappearance of early-afterdepolarizations (EADs). In mice with genetic mutation of the CaMKII phosphorylation site on RyR2 (RyR2-S2814A), PBs decreased by 51.0±14.7%. In contrast, the number of PBs upon reperfusion did not change in transgenic mice with ablation of both PLN phosphorylation sites (PLN-DM). The experiments in SR-AIP mice, in which the CaMKII inhibitor peptide is anchored in the SR membrane but also inhibits CaMKII regulation of L-type Ca(2+) channels, indicated a critical role of CaMKII-dependent phosphorylation of SR proteins and/or L-type Ca(2+) channels in reperfusion arrhythmias. The experiments in RyR2-S2814A further indicate that up to 60% of PBs related to CaMKII are dependent on the phosphorylation of RyR2-Ser2814 site and could be ascribed to delayed-afterdepolarizations (DADs). Moreover, phosphorylation of PLN-Thr17 and L-type Ca(2+) channels might contribute to reperfusion-induced PBs, by increasing SR Ca(2+) content and Ca(2+) influx.
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Pankewycz O, Leca N, Kohli R, Weber-Shrikant E, Said M, Alnimri M, Feng L, Patel S, Laftavi MR. Conversion to low-dose tacrolimus or rapamycin 3 months after kidney transplantation: a prospective, protocol biopsy-guided study. Transplant Proc 2011; 43:519-23. [PMID: 21440749 DOI: 10.1016/j.transproceed.2011.01.033] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Long-term survival of kidney allografts is primarily limited by a progressive decline in function characterized by the presence of interstitial fibrosis (IF) and tubular atrophy (TA) on biopsy. Since chronic calcineurin-inhibitor (CNI) drug toxicity has been implicated as a significant cause of IF/TA, a major effort in transplantation has been to decrease or eliminate CNI therapy. We now report the clinical and histological consequences of converting renal transplant recipients at 3 months to either very low levels of tacrolimus (TAC; 4-6 ng/mL) or sirolimus (SRL; 6-10 ng/mL) therapy. Fifty-eight enrollees in this prospective randomized trial received low-dose (2.9±0.6 mg/kg) rabbit antithymocyte globulin induction followed by standard doses of TAC (10-15 ng/mL), mycophenolic acid, and low-dose steroids for 3 months. Protocol biopsies were performed at implantation and 3 and 12 months. Six patients had evidence of either borderline changes (n=5) or grade 1A rejection (n=1) on the 3-month protocol biopsy and were not randomized. Only one patient had clinically evident rejection that occurred after randomization to SRL. One patient in each group had borderline changes at 12 months. Renal function (estimated glomerular filtration rate) was equivalent in both groups at 12 months (TAC 74±15 vs SRL 66±18 mL/min, P=.22). Chronic allograft damage index scores at 1 year were similar in both groups (TAC 2.8±2.4 vs SRL 2.0±2.7, P=.71). The percentage of patients with IF/TA scores greater than 2 at 1 year was low in both groups (TAC 12% vs SRL 9%, P=.78). Therefore, in a low-risk population defined as having a normal 3-month protocol biopsy, TAC levels can be successfully decreased to very low concentrations. One-year graft function and histology were equally well maintained with either low-dose TAC or SRL immunosuppression.
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Vignier N, Esmat G, Elsharkawy A, Hassany M, Bonnard P, Delarocque-Astagneau E, Said M, Raafat R, El-Hoseiny M, Fontanet A, Mohamed MK, Vray M. Reproducibility of liver stiffness measurements in hepatitis C virus (HCV)-infected patients in Egypt. J Viral Hepat 2011; 18:e358-65. [PMID: 21692948 DOI: 10.1111/j.1365-2893.2010.01433.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Elastometry has demonstrated good accuracy, but little is known about its reproducibility. The aim of this study was to assess the intra- and inter-operator reproducibility of liver stiffness measurement among hepatitis C virus (HCV)-infected patients in Egypt. The study was conducted among HCV-infected patients referred for treatment evaluation in two hepatitis treatment centres of Cairo. Two operators took liver stiffness measurement two times per patient the same day. Intra- and inter-reproducibility were estimated by different methods: Bland and Altman graphics, variation coefficient, intraclass correlation coefficient and Kappa coefficient; 7.1 kPa was used as the threshold of significant (≥F2) fibrosis whenever needed. Fifty-eight patients were included in the study, and 216 measurements were taken. Failure rate was 7% and associated with overweight. For a value of 7.1 kPa, the inter-operator 95% limits of agreement were estimated at ±2.88 kPa. Intra- and inter-operator coefficients of variation ranged between 11% and 15%, intraclass correlation coefficients [95% confidence interval] between 0.94 [0.86-0.97] and 0.97 [0.95-0.99], and Kappa coefficients between 0.65 [0.44-0.88] and 0.92 [0.81-1.00]. The reliability of liver stiffness measurement is questionable when considering the decision to initiate antiviral therapy because of the percentage of discordance between measurements is notable, especially in the intermediate fibrosis stages.
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Ibrahim GH, Khalil FA, Mostafa F, Fawzy MS, Said M, Omar AE, El-Abaseri TB. Analysis of common MEFV mutations in Egyptian patients with familial Mediterranean fever: molecular characterisation of the disease. Br J Biomed Sci 2011; 67:202-7. [PMID: 21294448 DOI: 10.1080/09674845.2010.11730320] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Familial Mediterranean fever (FMF) is a hereditary inflammatory disorder transmitted as an autosomal recessive trait. It predominantly affects people living in, or originating from, areas around the Mediterranean and was difficult to diagnose until mutations in the MEFV gene were identified. This study aims to analyse the five most common MEFV mutations in Egyptian patients diagnosed clinically as FME Thirty-eight unrelated patients were tested for the presence of the MEFV gene mutations V726A, M694V, M694I, M680I and E148Q, using polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) and the amplification refractory mutation system (ARMS). Twenty-three patients (60.5%) had one or more mutations, whereas no mutation was found in the remaining 15 patients (39.5%). The most common mutation was M694I (42.5%), followed by V726A (22.5%), M680I (17.5%) and E148Q (17.5%). The M694V mutation was not detected. The profile of MEFV gene mutations in this study suggests that the origin of FMF in Egypt is heterogeneous, a finding in concordance with that for other Arab populations; however, some differences were observed as M694V, the most common mutation reported in Arabs, was not detected in this study.
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Said M, Sulaiman A, Habil M. Aripiprazole treatment effects on metabolic syndrome parameters in schizophrenia patients: Preliminary results. Eur Psychiatry 2011. [DOI: 10.1016/s0924-9338(11)73200-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
IntroductionMetabolic abnormalities have historically been associated with illness such as schizophrenia. However, many studies found aripiprazole has a safer metabolic profile and metabolic neutral for schizophrenic patient.ObjectiveThis is a prospective 24 weeks follow-up study. The primary objective of this study was to investigate the improvements in metabolic syndrome parameters observed in patients who were switched from other antipsychotics.MethodsPatients with schizophrenia treated with antipsychotic who were having abnormal metabolic parameters were switched to aripiprazole. They were analyzed to quantify clinically significant changes in metabolic parameters. At baseline, weight, waist circumference, blood pressure and fasting blood sugar were assessed. Fasting lipid profile was taken for total cholesterol, LDL cholesterol, HDL cholesterol and triglycerides at baseline. The same assessments were repeated at 4-weeks, 12-week and 24-week. Paired t-test and last observation carried forward (LOCF) were used for the statistical analysis.Preliminary results for those who completed 12 weeks follow up were presented.Results46 schizophrenic patients with 26 (56.5%) male and 20 (43.5%) female have completed the 12 weeks follow up. There was statistically significant reduction in mean weight (73.3 ± 19.2 kg) to (71.2 ± 20.5 kg), mean BMI (27.1 ± 5.4) to (26.2 ± 6.0), mean waist circumference for male (96.2 ± 14.1 cm) to (92.9 ± 17.9), mean triglycerices (1.86 ± 0.83 mmol) to (1.59 ± 0.54 mmol).ConclusionIn short-term, switching to aripiprazole treatment resulted in clinically significant improvements in weight, BMI, waist circumference in male, and triglycerices in at-risk patients.
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Laftavi M, Patel S, Soliman M, Alnimri M, Kohli R, Said M, Pankewycz O. Low-Dose Thymoglobulin Use in Elderly Renal Transplant Recipients Is Safe and Effective Induction Therapy. Transplant Proc 2011; 43:466-8. [PMID: 21440735 DOI: 10.1016/j.transproceed.2011.01.039] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Laftavi M, Hai F, Laftavi H, Feng L, Said M, Patel S, Kohli R, Alnimri M, Dayton M, Pankewycz O. Mycophenolic Acid Dose Reductions Result in Poor Long-Term Renal Allograft Survival: Comparison Between Mycophenolate Sodium and Mycophenolate Mofetil. Transplant Proc 2011; 43:478-81. [DOI: 10.1016/j.transproceed.2011.01.037] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Laftavi M, Alnimri M, Weber-Shrikant E, Kohli R, Said M, Patel S, Pankewycz O. Low-Dose Rabbit Antithymocyte Globulin Versus Basiliximab Induction Therapy in Low-Risk Renal Transplant Recipients: 8-Year Follow-Up. Transplant Proc 2011; 43:458-61. [DOI: 10.1016/j.transproceed.2011.01.035] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Alnimri M, Laftavi M, Kohli R, Said M, Feng L, Patel S, Pankewycz O. African-American Women and Older Patients Are at Risk for a Greater Decline in Renal Function Following Living Kidney Donation. Transplant Proc 2011; 43:512-5. [DOI: 10.1016/j.transproceed.2011.01.041] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Saad Y, Zakaria S, Ramzy I, Raziky ME, Shaker O, elakel W, Said M, Noseir M, El-Daly M, Hamid MA, Esmat G. Prevalence of occult hepatitis C in egyptian patients with non alcoholic fatty liver disease. ACTA ACUST UNITED AC 2011. [DOI: 10.4236/ojim.2011.12009] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Laftavi MR, Chaudhry Q, Kohli R, Feng L, Said M, Paolini K, Dayton M, Pankewycz O. The role of ureteral stents for all ureteroneocystostomies in kidney transplants. Int J Organ Transplant Med 2011; 2:66-74. [PMID: 25013597 PMCID: PMC4089254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
BACKGROUND Despite significant advancements in renal transplantation, certain basic surgical practices such as the routine use of ureteral stents (US) remain controversial. A recent met-analysis of ureteral stenting concluded that the routine use of US resulted in improved outcomes. In contrast, the indiscriminate use of US can lead to adverse complications. OBJECTIVE To better define this question, we reviewed our single center experience in which US were placed selectively. METHODS 301 patients were eligible to be enrolled. 55 living donor and 246 deceased-donor charts were analyzed for donor and recipient clinical characteristics, immunosuppressive therapy and outcomes. RESULTS 28 US were placed for either small bladder capacity (n=7), unhealthy appearing bladder tissue (n=8) or for an uncertain vascular supply to the ureter (n=13). Patients with US did not develop urinary leaks, 8 (28%) developed complications including obstruction, encrustation, and urinary tract infections. 12 (4.3%) non-stented patients developed a clinically significant urinary leak. Risk factors for urinary leaks included dual and en-bloc pediatric donor kidney transplants, extended criteria donors and the use of single U stitch technique for ureteral anastomoses. CONCLUSION Our results demonstrate that the majority of patients can be successfully transplanted without the routine use of US. Selective use of US should be reserved for high-risk situations.
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Said M, El-Raziky MS, Abdel-Hamid M, Saad Y, Hashem M, Zakaria S, Mohamed MK, Esmat G. Impact of past HBV exposure on virological response to combined interferon ribavirin therapy in patients with chronic HCV genotype 4. ACTA ACUST UNITED AC 2011. [DOI: 10.4236/ojim.2011.12010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
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Bayomi N, Said M, Sedrak M, El-Syed AEN. An Investigation on Vortex Breakdown Phenomena in a Vertical Cylindrical Tube. JOURNAL OF KING ABDULAZIZ UNIVERSITY-ENGINEERING SCIENCES 2011; 22:121-141. [DOI: 10.4197/eng.22-1.7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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Racila D, Winter M, Said M, Tomanek-Chalkley A, Wiechert S, Eckert RL, Bickenbach JR. Transient expression of OCT4 is sufficient to allow human keratinocytes to change their differentiation pathway. Gene Ther 2010; 18:294-303. [PMID: 20981110 PMCID: PMC3032017 DOI: 10.1038/gt.2010.148] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
In this study, we describe a simple system in which human keratinocytes can be redirected to an alternative differentiation pathway. We transiently transfected freshly isolated human skin keratinocytes with the single transcription factor OCT4. Within 2 days these cells displayed expression of endogenous embryonic genes and showed reduced genomic methylation. More importantly, these cells could be specifically converted into neuronal and contractile mesenchymal cell types. Redirected differentiation was confirmed by expression of neuronal and mesenchymal cell mRNA and protein, and through a functional assay in which the newly differentiated mesenchymal cells contracted collagen gels as efficiently as authentic myofibroblasts. Thus, to generate patient-specific cells for therapeutic purposes, it may not be necessary to completely reprogram somatic cells into induced pluripotent stem cells before altering their differentiation and grafting them into new tissues.
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Do Thanh X, Coquin AS, Said M, Khan MA, Bouet G. Spring Time and Fall Time Effects of 1,25-Dihydroxyvitamin D3, Cobalt (II) and (CoCl2(1,25(OH)2D3)4) Complex on Renal and Cerebral Enzymatic Markers in Rats. BIOL RHYTHM RES 2010. [DOI: 10.1076/brhm.27.1.105.12939] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Laftavi MR, Patel SK, Feng L, Said M, Laftavi H, Kohli R, Alnimri M, Pankewycz O. LOW DOSE RABBIT ANTI-THYMOCYTE GLOBULIN INDUCTION IN LOW RISK RENAL TRANSPLANT RECIPIENTS: 8 YEARS FOLLOW UP. Transplantation 2010. [DOI: 10.1097/00007890-201007272-00121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Zaki S, Said M, Gazaierly S, Kholeif L, Malaty R. PP-174 Chlamydia trachomatis in cervices of women in late pregnancy. Int J Infect Dis 2010. [DOI: 10.1016/s1201-9712(10)60242-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Samy N, Hashim M, Sayed M, Said M. Clinical significance of inflammatory markers in polycystic ovary syndrome: their relationship to insulin resistance and body mass index. DISEASE MARKERS 2009; 26:163-70. [PMID: 19729797 PMCID: PMC3833606 DOI: 10.3233/dma-2009-0627] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
Background: Women with polycystic ovary syndrome (PCOS) have an increased prevalence of insulin resistance (IR) and related disorders. Elevated serum levels of high sensitivity CRP (hs-CRP), interleukin-6 (IL-6) and tumor necrosis factor α (TNF-α) reflect low-grade chronic inflammation and have been associated with several insulin-resistant states; they are useful cardiovascular risk markers. The objective of this study was to investigate whether soluble inflammatory markers are altered in PCOS focusing on its relationship with obesity and indexes of insulin resistance. Patients and methods: One hundred and eight women with PCOS and 75 healthy women were recruited. Patients were divided according to body mass index (BMI) into two groups; group I (BMI < 27 kg/m2) and group II (BMI ≥ 27 Kg/m2). Serum levels of hs-CRP, IL-6, and TNF-α, lipid and hormone profiles were measured. Results: PCOS patients had increased levels of testosterone, luteinizing hormone (LH), androstendione, insulin level and HOMA index compared to healthy BMI matched controls. High-density lipoprotein (HDL) concentrations were significantly reduced in both patient groups compared to their controls, while triglyceride levels were significantly increased in obese group compared to controls. There were no significant difference in serum inflammatory markers hs-CRP, IL-6 and TNF-α between group I and their matched controls. On the other hand, there were significant increase in these markers between group II and their matched controls. There were highly significant positive correlation between hs-CRP and IL-6 (r = 0.702, P < 0.001) and between hs-CRP and TNF-α (r = 0.621, P <0.001), also between IL-6 and TNF-α (r = 0.543, P < 0.001). These inflammatory markers correlated significantly with BMI and HOMA index. Multiple regression analysis revealed that BMI and HOMA were predictors of IL-6 levels (b = 11.173, P < 0.001, b = 13.564, P < 0.001 respectively) and BMI was the only predictor of hs-CRP levels (b = 12.578, P < 0.001) and TNF-α levels (b = 0.134, P < 0.001). Conclusion: PCOS and obesity induce an increase in serum inflammatory cardiovascular risk markers. The precise mechanisms underlying these associations require additional studies to clarify the state of the cardiovascular system in women with PCOS compared with controls in large numbers of patients to determine the relative contribution of different factors including insulin resistance, androgen status and BMI.
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Yudono B, Said M, Hakstege P, Suryadi F. Kinetics of Indigenous Isolated Bacteria Bacillus mycoides Used for Ex-Situ Bioremediation of Petroleum Contaminated Soil in PT Pertamina Sungai Lilin South Sumatera. ACTA ACUST UNITED AC 2009. [DOI: 10.5539/jsd.v2n3p64] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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El Makhzangy H, Esmat G, Said M, Elraziky M, Shouman S, Refai R, Rekacewicz C, Gad RR, Vignier N, Abdel-Hamid M, Zalata K, Bedossa P, Pol S, Fontanet A, Mohamed MK. Response to pegylated interferon alfa-2a and ribavirin in chronic hepatitis C genotype 4. J Med Virol 2009; 81:1576-83. [PMID: 19626613 DOI: 10.1002/jmv.21570] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The safety and efficacy of pegylated interferon (PEG-IFN) alfa-2a and ribavirin were studied among patients treated for genotype 4 chronic hepatitis C. Ninety-five patients with chronic hepatitis C genotype 4 were treated with PEG-IFN alfa-2a (180 microg/week) plus ribavirin (> or =11 mg/kg/day) for 48 weeks. The primary end point was sustained virological response, defined as non-detectable levels of HCV RNA at the end of follow up (week 72). The proportion with sustained virological response was 58/95 = 61.1% (95% CI = 50.5-70.9%). Side effects were generally mild, well managed by dose reductions (in 62% of patients); in only two patients were side effects sufficiently severe to require treatment interruption. Ninety percent of patients adhered to treatment up to week 12, and their sustained virological response rate was higher compared to non-adherent (65% vs. 22%, respectively, P = 0.012). None of the patients who failed to achieve 1 log reduction of viral load by week 8 (n = 15), or 2 log reduction by week 12 (n = 17), had a sustained virological response. In conclusion, sustained virological response in genotype 4 Egyptian patients treated with PEG-IFN alfa-2a and ribavirin was estimated around 60%, intermediate between sustained virological response observed in genotype 1 and genotype 2-3 patients in Western countries. The early virological response (week 4 or week 8) should be investigated as a criterion to decide whether the patient may benefit from a shorter duration of therapy.
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El-Attar M, Said M, El-Assal G, Sabry NA, Omar E, Ashour L. Serum trace element levels in COPD patient: the relation between trace element supplementation and period of mechanical ventilation in a randomized controlled trial. Respirology 2009; 14:1180-7. [PMID: 19761535 DOI: 10.1111/j.1440-1843.2009.01622.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND AND OBJECTIVE Many trace elements play important roles in activating or inhibiting enzymatic reactions, by competing with other elements and metalloproteins for binding sites, by affecting the permeability of cell membranes and by other mechanisms. They play important roles in the oxidant/antioxidant balance. As such, trace elements are thought to be involved directly or indirectly in the pathogenesis of several diseases. The aim of the present study is to investigate the effect trace elements (Se, Mn and Zn) intravenously administered on the period the COPD patients spend on mechanical ventilation. METHODS In a randomized double-blinded controlled trial a set of 120 subjects (40 normal volunteers and 80 COPD) were recruited. Serum concentration levels of Se, Mn and Zn were determined for all enrolled subjects with Inductively Coupled Plasma spectroscopy. COPD patients received intravenous supplementation of the above trace elements and the period the patients spent on mechanical ventilation was determined. RESULTS There was a significant reduction (P = 0.013) in the period the patients with COPD spent on the mechanical ventilation when received intravenous supplementation (9.4 +/- 7.3 days) compared with the COPD patients who received placebo (17.8 +/- 7.6 days). CONCLUSIONS Trace element (Se, Mn and Zn) status is altered in critically ill patients with COPD. The supplementation achieved a reduction in the period those patients spent on the mechanical ventilation. A larger multi-centre trial is required to confirm this preventive effect and to explore its applicability to other critical care conditions.
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Said M. Evaluation of routine biochemical indices and α-fetoprotein versus histology in chronic hepatitis C patients. Arab J Gastroenterol 2009. [DOI: 10.1016/j.ajg.2009.08.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Yosry A, Abdel-Rahman M, Esmat G, El-Serafy M, Omar A, Doss W, Zayed N, Said M, Ismail T, Hosny A, Marawan E, El-Malt O, Kamel RR, Hatata Y, El-Taweel A, Ghali A, Sabri H, Kamel S, El-Gabaly H. Recurrence of hepatitis C virus (genotype 4) infection after living-donor liver transplant in Egyptian patients. EXP CLIN TRANSPLANT 2009; 7:157-163. [PMID: 19715525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
OBJECTIVES The recurrence of hepatitis C virus infection after liver transplant is common and may endanger both graft and patient survival. We investigated the frequency and outcome of and risk factors for the recurrence of that virus after living-donor liver transplant in hepatitis C virus positive recipients. MATERIALS AND METHODS Seventy-four adult hepatitis C virus positive subjects were monitored for 36 months after living-donor liver transplant and demographic and laboratory data for the recipients and donors were evaluated. Recurrent hepatitis C virus infection was diagnosed on the basis of viral replication revealed by polymerase chain reaction after transplant, elevated levels of transaminases, and the results of liver biopsy. RESULTS Hepatitis C virus recurrence was identified in 31.1% of the patients studied. Histopathologic recurrence was mild, and 91% of the subjects had a fibrosis score of < or = F2. No recipient exhibited cirrhosis or clinical decompensation during followup. Recurrent hepatitis C virus infection was associated with pretransplant and posttransplant viral load and antibody positive to hepatitis B core antigen. No other risk factors (sex, donor or recipient age, pretransplant Child-Pugh or Model for End-Stage Liver Disease scores, immunosuppressive drug therapy, and treatment with pulse steroids) were significantly correlated with the frequency of hepatitis C virus recurrence, the grade of the histologic activity index, or the stage of fibrosis. CONCLUSIONS In living-donor liver transplant recipients, patient and graft survival rates associated with hepatitis C virus (genotype 4) related cirrhosis were comparable to those in deceased-donor liver transplant recipients reported in the literature. Recurrent infection with hepatitic C virus after living-donor liver transplant was mild. After transplant, a higher viral load and the presence of antibody to hepatitis B core antigen could be risk factors for hepatitis C virus recurrence. Long-term follow-up in a large number of patients is required.
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Heine W, Krüger G, Said M. Zur unterschiedlichen Verwertung von Glukose und Sorbitol bei medikamentös induzierter hyperkortikaler Stoffwechsellage. Transfus Med Hemother 2009. [DOI: 10.1159/000221311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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141
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Yosry A, Esmat G, El-Serafy M, Omar A, Doss W, Said M, Abdel-Bary A, Hosny A, Marawan I, El-Malt O, Kamel RR, Hatata Y, Ghali A, Sabri H, Kamel S, El-Gbaly H, Tanaka K. Outcome of living donor liver transplantation for Egyptian patients with hepatitis C (genotype 4)-related cirrhosis. Transplant Proc 2008; 40:1481-4. [PMID: 18589133 DOI: 10.1016/j.transproceed.2008.03.085] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2007] [Revised: 12/14/2007] [Accepted: 03/06/2008] [Indexed: 11/18/2022]
Abstract
BACKGROUND Hepatitis C virus (HCV) recurrence after living donor liver transplantation (LDLT) represents a challenging issue due to universal viral recurrence and invasion into the graft, although the incidence of histological recurrence, risk factors, and survival rates are still controversial. PATIENTS AND METHODS Recurrence of HCV was studied in 38 of 53 adult patients who underwent LDLT. RESULTS Recipient and graft survivals were 86.6% at the end of the follow-up which was comparable to literature reports for deceased donor liver transplantation (DDLT). Clinical HCV recurrence was observed in 10/38 patients (26.3%). Four patients developed mild fibrosis with a mean fibrosis score of 0.6 and mean grade of histological activity index (HAI) of 7.1. None of the recipients developed allograft cirrhosis during the mean follow-up period of 16 +/- 8.18 months (range, 4-35 months). Estimated and actual graft volumes were negatively correlated with the incidence and early clinical HCV recurrence. None of the other risk factors were significantly correlated with clinical HCV recurrence: gender, donor and recipient ages, pretransplantation Child-Pugh or model for end-stage liver disease (MELD) scores, pre- and postoperative viremia, immunosuppressive drugs, pulse steroid therapy, and preoperative anti-HBc status. CONCLUSIONS Postoperative patient and graft survival rates for HCV (genotype 4)-related cirrhosis were more or less comparable to DDLT reported in the literature. Clinical HCV recurrence after LDLT in our study was low. Small graft volume was a significant risk factor for HCV recurrence. A longer follow-up and a larger number of patients are required to clarify these issues.
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Said M, Becerra R, Palomeque J, Rinaldi G, Kaetzel MA, Diaz-Sylvester PL, Copello JA, Dedman JR, Mundiña-Weilenmann C, Vittone L, Mattiazzi A. Increased intracellular Ca2+ and SR Ca2+ load contribute to arrhythmias after acidosis in rat heart. Role of Ca2+/calmodulin-dependent protein kinase II. Am J Physiol Heart Circ Physiol 2008; 295:H1669-83. [PMID: 18723772 DOI: 10.1152/ajpheart.00010.2008] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Returning to normal pH after acidosis, similar to reperfusion after ischemia, is prone to arrhythmias. The type and mechanisms of these arrhythmias have never been explored and were the aim of the present work. Langendorff-perfused rat/mice hearts and rat-isolated myocytes were subjected to respiratory acidosis and then returned to normal pH. Monophasic action potentials and left ventricular developed pressure were recorded. The removal of acidosis provoked ectopic beats that were blunted by 1 muM of the CaMKII inhibitor KN-93, 1 muM thapsigargin, to inhibit sarcoplasmic reticulum (SR) Ca(2+) uptake, and 30 nM ryanodine or 45 muM dantrolene, to inhibit SR Ca(2+) release and were not observed in a transgenic mouse model with inhibition of CaMKII targeted to the SR. Acidosis increased the phosphorylation of Thr(17) site of phospholamban (PT-PLN) and SR Ca(2+) load. Both effects were precluded by KN-93. The return to normal pH was associated with an increase in SR Ca(2+) leak, when compared with that of control or with acidosis at the same SR Ca(2+) content. Ca(2+) leak occurred without changes in the phosphorylation of ryanodine receptors type 2 (RyR2) and was blunted by KN-93. Experiments in planar lipid bilayers confirmed the reversible inhibitory effect of acidosis on RyR2. Ectopic activity was triggered by membrane depolarizations (delayed afterdepolarizations), primarily occurring in epicardium and were prevented by KN-93. The results reveal that arrhythmias after acidosis are dependent on CaMKII activation and are associated with an increase in SR Ca(2+) load, which appears to be mainly due to the increase in PT-PLN.
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Sfina N, Lazzari JL, Cuminal Y, Christol P, Said M. Coulomb interaction of electron gas in MQWs Si/Si1−xGex/Si. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2008. [DOI: 10.1016/j.msec.2007.10.083] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Ellul D, Cutajar J, Borg Xuereb H, Said M. Nasopharyngeal carcinoma presenting as carotidynia in an 18-year-old patient. The Journal of Laryngology & Otology 2007; 122:207-9. [PMID: 17419895 DOI: 10.1017/s0022215107007293] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
INTRODUCTION Nasopharyngeal carcinoma can present with a variety of symptoms the most common being painless cervical lymph node metastases, epistaxis and conductive hearing loss. CASE REPORT We report a case of an 18-year-old male patient presenting to the ENT department with left sided carotidynia - severe pain in the neck radiating up to his ear. He had a small, exquisitely tender lump just below the bifurcation of the left common carotid artery. After the appropriate investigations he was diagnosed with nasopharyngeal carcinoma. DISCUSSION In a literature search on Medline and Pubmed we found no reported cases of nasopharyngeal carcinoma presenting with carotidynia, nor was carotidynia ever found to be associated with nasopharyngeal carcinoma. CONCLUSION We believe that this is the first reported case of such a presentation of nasopharyngeal carcinoma.
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Said M, Elektorowicz M, Ahmad D, Chifrina R. A new rapid technique for screening the potential of implanted microorganisms to tolerate and grow on petroleum oily sludges. ENVIRONMENTAL TECHNOLOGY 2006; 27:1115-23. [PMID: 17144260 DOI: 10.1080/09593332708618727] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Standard experimental protocols for biodegrading petroleum hydrocarbons employ microbiological and/or analytical analysis, and require advanced machines and specialized professionals to carry them out. Furthermore, the obtained results involve a high margin of error. In this paper, a new experimental technique was developed to facilitate the study of microbial capability to degrade petroleum oily sludges. The technique is based on growing microorganisms on 0.22 microm filter membranes laid over oily sludge placed in metallic cups. The microbial growth was assessed using the plate counts technique. Sludge degradation was assessed using Fourier Transform Infrared Spectrometry (FTIR), and compared to the decrease in total petroleum hydrocarbons (TPH) using solvent extraction. The protocol was tested using three types of inocula: fungal inoculum containing Paecilomyces variotii; bacterial inoculum containing Bacillus cereus; and fungal-bacterial inoculum containing both strains. Both, fungal and bacterial, strains were isolated from the oily sludge used in the present study, and were tentatively identified as oil degraders. The results of the newly developed technique helped to assess the potential of these cultures to tolerate and grow on the oily sludge.
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Mattiazzi A, Mundiña-Weilenmann C, Vittone L, Said M, Kranias EG. The importance of the Thr17 residue of phospholamban as a phosphorylation site under physiological and pathological conditions. Braz J Med Biol Res 2006; 39:563-72. [PMID: 16648892 DOI: 10.1590/s0100-879x2006000500001] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The sarcoplasmic reticulum (SR) Ca2+-ATPase (SERCA2a) is under the control of an SR protein named phospholamban (PLN). Dephosphorylated PLN inhibits SERCA2a, whereas phosphorylation of PLN at either the Ser16 site by PKA or the Thr17 site by CaMKII reverses this inhibition, thus increasing SERCA2a activity and the rate of Ca2+ uptake by the SR. This leads to an increase in the velocity of relaxation, SR Ca2+ load and myocardial contractility. In the intact heart, beta-adrenoceptor stimulation results in phosphorylation of PLN at both Ser16 and Thr17 residues. Phosphorylation of the Thr17 residue requires both stimulation of the CaMKII signaling pathways and inhibition of PP1, the major phosphatase that dephosphorylates PLN. These two prerequisites appear to be fulfilled by beta-adrenoceptor stimulation, which as a result of PKA activation, triggers the activation of CaMKII by increasing intracellular Ca2+, and inhibits PP1. Several pathological situations such as ischemia-reperfusion injury or hypercapnic acidosis provide the required conditions for the phosphorylation of the Thr17 residue of PLN, independently of the increase in PKA activity, i.e., increased intracellular Ca2+ and acidosis-induced phosphatase inhibition. Our results indicated that PLN was phosphorylated at Thr17 at the onset of reflow and immediately after hypercapnia was established, and that this phosphorylation contributes to the mechanical recovery after both the ischemic and acidic insults. Studies on transgenic mice with Thr17 mutated to Ala (PLN-T17A) are consistent with these results. Thus, phosphorylation of the Thr17 residue of PLN probably participates in a protective mechanism that favors Ca2+ handling and limits intracellular Ca2+ overload in pathological situations.
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Esmat G, Zalata K, Metwally M, Khattab H, El Batanouni M, El Daly M, Anwar M, Hassan A, Ismail S, Said M, Shaheen A, Sjogren M, Strickland T, Mohamed M. P.149 Histopathological characterization of genotype 4 chronic hepatitis C. J Clin Virol 2006. [DOI: 10.1016/s1386-6532(06)80329-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Ben Meriem C, Nouri S, Chouchane C, Chouchane S, Said M, Ghédira L, Moussa A, Boubtane M, Guediche MN. [Eosinophilic granuloma revealed by torticollis: a case report]. Arch Pediatr 2005; 13:44-7. [PMID: 16343867 DOI: 10.1016/j.arcped.2005.09.030] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2004] [Accepted: 09/27/2005] [Indexed: 10/25/2022]
Abstract
UNLABELLED Langerhans cell histiocytose is a rare condition in childhood. It presents in different ways ranging from a single bony disease to a multisystemic disease involving vital organs. CASE REPORT We report a case of single bone involvement revealed by torticollis in an eight-year-old boy. The diagnosis was evocated on radiological findings and confirmed by histologic aspects. After a period of 2,5 years, this child is in total spontaneous remission. CONCLUSION Torticollis must be explored and watched. Eosinophilic granuloma can be a rare aetiology in children. The outcome is often favorable.
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149
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Esmat G, Yosry A, El-Serafi M, Omar A, Doss W, Hosny A, Ghali A, Sabry H, Attia H, Kamel S, Said M, Gabali H, Lee SK, Tanaka K. Donor Outcomes in Right Lobe Adult Living Donor Liver Transplantation: Single-Center Experience in Egypt. Transplant Proc 2005; 37:3147-50. [PMID: 16213332 DOI: 10.1016/j.transproceed.2005.07.059] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
INTRODUCTION AND OBJECTIVES Living donor liver transplantation (LDLT) is an alternative source of organs for patients with end-stage liver disease (ESLD) in absence of deceased donor LT. In LDLT the greatest concern is donor safety. Our objective was to evaluate the outcome of donors after right lobe liver donation in a single LT center in Egypt. PATIENTS AND METHODS Fifty LDL resections were performed from 2001 to 2004. The mean donor age was 29.2 +/- 6.4 years. Residual liver volume was 41.1 +/- 4.5%. Mean operative time was 560 +/- 62.2 minutes; mean ICU stay, less than 24 hours; mean hospital stay, 15.4 +/- 7.7 days; and mean follow-up period, 6 months. RESULTS There was no mortality. The overall complication rate was 68% (34 donors). Major complications included intraoperative bleeding in one, biliary leak in two, and pneumonia in three donors. Minor complications included mild pleural effusion in 13 donors, transient ascites in 10, mild depression in 7, intra-abdominal collections in 3, and wound infections in 1 donor. Residual liver volume did not affect the complication rate. None required reoperation. Return to predonation activity occurred within 6 to 8 weeks. No liver impairment occurred during follow-up. CONCLUSION Right lobe adult LDLT is a safe procedure with regard to donor outcome. Major complications occurred in only 10% of our series.
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Hafsa C, Belguith M, Golli M, Rachdi H, Kriaa S, Elamri A, Said M, Brahem R, Zakhama A, Nouri A, Gannouni A. Imagerie du kyste hydatique du poumon chez l’enfant. ACTA ACUST UNITED AC 2005; 86:405-10. [PMID: 15959433 DOI: 10.1016/s0221-0363(05)81372-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
PURPOSE We present the various imaging features of pediatric pulmonary hydatidosis based upon a series of 232 cases. The importance of chest radiographs and thoraco-abdominal ultrasound is emphasized. PATIENTS AND METHODS A retrospective study of 232 children with pulmonary hydatidosis is presented. The 232 cases (130 boys and 102 girls, age range: 18 months to 14 years) were studied between January 1982 and December 2001. Chest radiographs were available in all cases, chest ultrasound in 156 cases and abdominal ultrasound in 212 cases. CT was only performed in 40 cases. Surgery was performed for all patients. Diagnosis was confirmed with serology tests and/or pathological study of resected cysts. RESULT The total number of pulmonary cysts detected on chest radiographs was 344. The right lung was more frequently affected than the left (208 lesions). A simple cyst was the most commonly observed lesion (220 cysts). Complicated forms were noted in 118 cases. 180 cysts were observed at ultrasound. A simple cyst presenting as an anechoic mass was noted in 140 cases. In 38 cases, the lesion was heterogeneous. In two lesions endocystic germinal membranes were detected. CT visualized 50 lesions. Thirty three lesions were complicated with endocystic floating or collapsed membranes. Bronchiectasis was observed in seven cases. CONCLUSION Chest radiographs and thoraco-abdominal ultrasound are very useful for the diagnosis of pulmonary hydatidosis and evaluation of lesion extension. CT is useful for diagnosis of atypical or complicated lesions and to detect bronchiectasis.
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