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| 1 | Association between low molecular polypeptide 7 single nucleotide polymorphism and response to therapy in hepatitis C virus infection显示文摘AIM: To investigate the relationship between low molecular polypeptide-7 (LMP-7) gene polymorphism and response to interferon (IFN) therapy in chronic hepatitis C virus (HCV) patients. METHODS: LMP-7 polymorphism at codon 49 with nucleotide substitution from A to C was amplified in 104 chronic HCV patients of genotype 4. The amplicons were digested with restriction endonuclease Bsm I and the produced restriction fragment length polymorphism was analyzed. Patients received IFN + regional blood volume therapy for 48 wk and the frequency of thissingle nucleotide polymorphism (SNP) was statistically correlated with treatment response. The exclusion criteria for these patients were stated by the national health program for treating viral hepatitis. Main exclusion criteria included co-infection with hepatitis B virus or schistosomiasis, thyroid dysfunction, uncontrolled diabetes mellitus, history of long term drug or alcohol intake and autoimmune hepatitis. Multivariate analyses were done to correlate LMP-7 SNP plus several factors such as age, gender, weight, serum alpha-fetoprotein (AFP) and alanine aminotransferase levels, liver activity, fibrosis score and viral load with response to therapy. RESULTS: The data presented in this study clearly demonstrated statistically significant differences between sustained virological response (SVR) (defined as the absence of HCV RNA levels in the patient's sera at least 6 mo after discontinuation of treatment) and non-response (NR) (where HCV RNA levels in the patient's sera never become undetectable for 6 mo during or after treatment). Variables were described as odds ratio with 95%CI. The data were considered significant if P values were ≤ 0.05; highly significant if P < 0.01 and very highly significant if P < 0.001. Current data showed that 91.7% of patients carrying LMP-7 C/C allele were associated with SVR, while the other two genotypes C/A and A/A were associated with NR patients, 83.3% and 64.3% respectively, showing that genotype CC was strongly associated with response to interferon (95%CI: 12.0719-134.6572, P = 0.0001). The majority of parameters recorded in SVR and NR patients included higher values of mean age (P = 0.004), alanine aminotransferase (P = 0.001), AFP (P = 0.001), body weight (P = 0.025), viral load (P = 0.025), higher fibrosis and histological activity index indices among NR vs SVR patients. Also, the multivariate statistical analysis of the different factors of fibro-sis score, liver activity grade, genotypes and alleles of LMP-7 gene polymorphism in responders and NRs of HCV patients in this study showed that HCV patients with A allele had a very highly significant association with the NRs, high fibrosis and higher liver activity, while the C allele had a very highly significant association with the responders, low fibrosis and lower liver activity (95%CI: 3.5800-13.2519, P = 0.0001).CONCLUSION: LMP-7 SNP is a candidate gene that should be considered when designing a mathematical model for predicting response to therapy and disease progression in HCV patients. | Moataza H Omran Basma E Fotouh Samar S Youssef Noha E Ibrahim Wael Nabil EL-Sayed M Mahdy Wafaa G Shosha Mostafa K El-Awady | 2013 | World Journal of Hepatology2013，5，3： | 4 |
| 2 | Differential expression of cell cycle regulators in HCV-infection and related hepatocellular carcinoma显示文摘AIM:To investigate cell cycle proteins in chronic hepatitis C virus infection in order to analyze their role in the process of hepatocyte transformation and to characterize their prognostic properties. METHODS:Subjects of the current study included 50 cases of chronic hepatitis C(CHC) without cirrhosis,30 cases of CHC with liver cirrhosis(LC) ,and 30 cases of hepatitis C-related hepatocellular carcinoma(HCC) admitted to the Department of Hepato-Gastroenterology,Theodor Bilharz Research Institute(TBRI) ,Giza,Egypt.Fifteen wedge liver biopsies,taken during laparoscopic cholecystectomy,were also included as normal controls.Laboratory investigations including urine and stool analysis,liver function tests and prothrombin concentration;serologic markers for viral hepatitis and ultrasonography were done for all cases of the study together with immunohistochemical analysis using primary antibodies against Cyclin D1,Cyclin E,p21,p27 and Rb/p105 proteins. RESULTS:Normal wedge liver biopsies didn't express Cyclin E or Rb/p105 immunostaining but show positive staining for Cyclin D1,p21 and p27.Cyclin D1 expressed nuclear staining that was sequentially increased from CHC to LC(P<0.01) to HCC(P<0.001) cases;meanwhile,Cyclin E revealed nuclear positivity only in the case of HCCs patients that was directly correlated to Rb/p105 immuno-reactivity.The expression of p21 and p27 was significantly increased in CHC and LC cases compared to normal controls and HCCs with no significant difference between well-and poorlydifferentiated tumors.p21 showed only a nuclear pattern of staining,while,p27 presented with either cytoplasmic and/or nuclear reactivity in all studied cases.Correlation analysis revealed a direct relation between Cyclin D1 and p21 in CHC cases(P<0.001) ,between Cyclin D1 and Cyclin E in HCCs(P<0.01);however,an inverserelationship was detected between Cyclin D1 and p21 or p27(P<0.001) and between p21 and Rb/p105(P<0.05) in HCCs. CONCLUSION:Upregulation of Cyclin D1 in CHC plays a vital role in the development and differentiation of HCC;while,Cyclin E may be a useful marker for monitoring tumor behavior.p21 and p27 can be used as predictive markers for HCC.Furthermore,higher expression of Rb/p105 as well as inverse relation with p21 and histologic grades suggests its important role in hepatic carcinogenesis. | Azza E El Bassiouny Mona M Nosseir Mona K Zoheiry Noha A Ameen Ahmed M Abdel-Hadi Ibrahim M Ibrahim Suher Zada Abdel-Hakeem Saad El-Deen Nora E El-Bassiouni | 2010 | World Journal of Hepatology2010，2，1： | 3 |
| 3 | Determination of Polarity Terms of Some Nitrogen-Containing Surfactants and Simulated Hydrophobic Tail Models by Gas Chromatography显示文摘Some polarity terms of two groups of nitrogen-containing surfactants (six alkanolamides and nine polyoxyethylenated long chain amines) are measured through gas chromatography. The apparent methanol carbon number (CMeOH) and polarity index (IP) values are determined on the investigated surfactants as stationary phases in packed columns. Similarly, CMeOH and IP values are determined on simulated hydrophobic tail (SHT) models. The obtained results reveal that the introduction of SHT approach permits the distinction between the polarities of different surfactants and their head groups. The measured polarity terms are discussed as related to hydrophile-lipophile balance (HLB) number and the hydrophobic group carbon number (RCN). Some equations relating the measured polarity values and these variable have been developed. | BARAKAT Y IBRAHIM V MOSTAFA N E SHAKER N O | 2005 | 色谱2005，23，4： | 3 |
| 4 | Toxicity assessment of polyethylene microplastics in combination with a mix of emerging pollutants on Physalaemus cuvieri tadpoles显示文摘Studies in recent years have shown that aquatic pollution by microplastics(MPs)can be considered to pose additional stress to amphibian populations.However,our knowledge of how MPs affect amphibians is very rudimentary,and even more limited is our understanding of their effects in combination with other emerging pollutants.Thus,we aimed to evaluate the possible toxicity of polyethylene MPs(PE-MPs)(alone or in combination with a mix of pollutants)on the health of Physalaemus cuvieri tadpoles.After 30 days of exposure,multiple biomarkers were measured,including morphological,biometric,and developmental indices,behavioral parameters,mutagenicity,cytotoxicity,antioxidant and cholinesterase responses,as well as the uptake and accumulation of PE-MPs in animals.Based on the results,there was no significant change in any of the parameters measured in tadpoles exposed to treatments,but induced stress was observed in tadpoles exposed to PE-MPs combined with themixture of pollutants,reflecting significant changes in physiological and biochemical responses.Through principal component analysis(PCA)and integrated biomarker response(IBR)assessment,effects induced by pollutants in each test group were distinguished,confirming that the exposure of P.cuvieri tadpoles to the PE-MPs in combination with a mix of emerging pollutants induces an enhanced stress response,although the uptake and accumulation of PE-MPs in these animalswas reduced.Thus,our study provides newinsight into the danger to amphibians of MPs coexisting with other pollutants in aquatic environments. | Amanda Pereira da Costa Araújo Thiarlen Marinho da Luz Mohamed Ahmed Ibrahim Ahmed Mir Mohammad Ali Md.Mostafizur Rahman Bojan Nataraj Daniela de Melo e Silva DamiàBarceló Guilherme Malafaia | 2023 | Journal of Environmental Sciences2023，，5： | 2 |
| 5 | Particulate Reinforced Metal Matrix Composites显示文摘 | Ibrahim I A Mohamed F A Lavernia E J | 1991 | Mater Sci1991，26，： | 1 |
| 6 | Corrosion control in electric power systems显示文摘 | Ibrahim E S | 1999 | Electric Power Systems Research1999，52，1： | 1 |
| 7 | The experimental determination of vibration parameters from time responses 显示文摘 | IBRAHIM S R MIKULCIK E C | 1976 | Shock and Vibration Bulletin1976，46，5： | 1 |
| 8 | Three- dimensional non-isothermal modeling of carbon monox- ide poisoning in high temperature proton exchange mem- brane fuel cells with phosphoric acid doped polybenzimi- dazole membranes 显示文摘 | Jiao Kui Alaefour Ibrahim E Li Xianguo | 2011 | Fuel2011，90，2： | 1 |
| 9 | Ismail saritas fuzzy expert system design for operating room air - condition control systems 显示文摘 | Nazmi E K Novruz A H Ibrahim U S | 2009 | Expert Systems with Applications2009，36，6： | 1 |
| 10 | Effect of dietary protein level and strain on growth performance of heat stressed broiler chicks显示文摘 | Rashid H O S Huwaida E E M Ibrahim Y A | 2012 | International Journal of Poultry Science2012，11，10： | 1 |
| 11 | A novel technique in applying skeletal traction for long bone fractures显示文摘 | Al-Khateeb H Peckham T Ibrahim E | 2008 | Ann R Coll Surg Engl2008，90，5： | 1 |
| 12 | Rapid determination of chloramphenicol and its glucuronide in food products by liquid chromatography-electrospray negative ionization tandem mass spectrometry显示文摘 | Bogusz M J Hassan H A1-Enazi E Ibrahim Z A1-Tufail M | 2004 | Journal of Chromatography B2004，807，： | 1 |
| 13 | Early versus late enteral feeding of mechanically ventilated patients:results of a clinical trial显示文摘 | IBRAHIM E H MEHRINGER L PRENTICE D | 2002 | J Parenter Enteral Nutr2002，26，3： | 1 |
| 14 | A method for the direct identification of vibration parameters from the free response 显示文摘 | IBRAHIM S R MIKULCIK E C | 1977 | Shock and Vibration Bulletin1977，47，4： | 1 |
| 15 | Traveling- wave -based fault- location scheme for multiend- aged underground cable system显示文摘 | GILANY M G IBRAHIM D K SAYED E | 2007 | IEEE Transactions on Power Delivery2007，22，1： | 1 |
| 16 | Gene-expression profiling of the early stages of MOG-induced EAE proves EAE-resistance as an active process显示文摘 | Mix E Ibrahim S Pahnke J | 2004 | J Neuroimmunol2004，151，： | 1 |
| 17 | Traveling-wave-based fault-location scheme for multiend-aged underground cable system 显示文摘 | GILANY M IBRAHIM D K ELDIN E T | 2007 | IEEE Transactions on Power Delivery2007，22，1： | 1 |
| 18 | Acta Metallurgica显示文摘 | Holt R A Ibrahim E F | 1979 | 27:13191979，27，： | 1 |
| 19 | Mitral stenosis after mitral valve repair for non-rheumatic mitral regurgitation显示文摘 | Ibrahim M F David T E | | 0，，： | 1 |
| 20 | Endoscopic resection of sinonasal cancers with and without eraniotomy: oneologie results显示文摘 | Hanna E DeMonte F Ibrahim S | 2009 | Arch Otolaryngol Head Neck Surg2009，135，12： | 1 |
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