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| 1 | p53 antibodies,metallothioneins,and oxidative stress markers in chronic ulcerative colitis with dysplasia显示文摘AIM:To investigate the role of p53 antibodies (p53Abs),metallothioneins (MTs) and oxidative stress markers in the early detection of dysplasia in chronic ulcerative colitis (UC).METHODS:The study included 30 UC patients,15 without dysplasia (group Ⅱ) and 15 with dysplasia (group Ⅲ),in addition to 15 healthy volunteers (group Ⅰ,control subjects).The enzyme-linked immunosorbent assay technique was used to measure serum p53Abs and MTs,while advanced oxidation protein products (AOPPs),and reduced glutathione (GSH) levels were measured by spectrophotometric method in all subjects.RESULTS:In group Ⅱ and group Ⅲ compared to group Ⅰ,there were significant increases in serum levels of AOPPs (145.94 ± 29.86 μmol/L and 192.21 ± 46.71 μmol/L vs 128.95 ± 3.06 μmol/L,P < 0.002 and P <0.001,respectively),MTs (8.18 ± 0.35 μg/mL and 9.20 ± 0.58 μg/mL vs 6.12 ± 0.25 μg/mL,P < 0.05 and P < 0.05,respectively),and p53Abs (20.19 ± 3.20 U/mL and 34.66 ± 1.34 U/mL vs 9.42 ± 1.64 U/mL,P < 0.001 and P < 0.001,respectively).There were significantly higher levels of AOPPs (P < 0.05) and p53Abs (P < 0.001) in UC patients with dysplasia compared to those without dysplasia,while MTs showed no significant difference between the 2 groups (P > 0.096).In contrast,GSH levels showed a significant decrease in both patients' groups (1.87 ± 0.02 μmol/mL and 1.37 ± 0.09 μmol/mL vs 2.49 ± 0.10 μmol/mL,P < 0.05 and P < 0.05 in groups Ⅱ and Ⅲ,respectively) compared with group Ⅰ,and the levels were significantly lower in group Ⅲ than group Ⅱ (P < 0.05).There was a positive correlation between AOPPs and both MTs (r=0.678,P < 0.001) and p53Abs (r=0.547,P < 0.001),and also between p53Abs and MTs (r=0.739,P < 0.001).There was a negative correlation between AOPPs and GSH (r =-0.385,P < 0.001),and also between GSH and both MTs (r=-0.662,P < 0.001) and p53Abs (r=-0.923,P < 0.001).CONCLUSION:Oxidative stress and oxidative cellular damage play an important role in the pathogenesis of chronic UC and the associated carcinogenetic process.p53Abs levels could help in early detection of dysplasia in these conditions. | Hala E Hamouda Soha S Zakaria Saber A Ismail Mahmoud A Khedr Wael W Mayah | 2011 | World Journal of Gastroenterology2011，17，19： | 5 |
| 2 | Occult hepatitis B virus infection among Egyptian blood donors显示文摘AIM:To identify blood donors with occult hepatitis B virus(HBV) infection(OBI) to promote safe blood donation.METHODS:Descriptive cross sectional study was conducted on 3167 blood donors negative for hepatitis B surface antigen(HBsAg),hepatitis C antibody(HCV Ab) and human immunodeficiency virus Ab.They were subjected to the detection of alanine aminotransferase(ALT) and aspartate transaminase(AST) and screening for anti-HBV core antibodies(total) by two different techniques;[Monoliza antibodies to hepatitis B core(Anti-HBc) Plus-Bio-Rad] and(ARC-HBc total-ABBOT).Positive samples were subjected to quantitative detection of antibodies to hepatitis B surface(anti-HBs)(ETI-AB-AUK-3,Dia Sorin-Italy).Serum anti-HBs titers > 10 IU/L was considered positive.Quantitative HBV DNA by real time polymerase chain reaction(PCR)(QIAGEN-Germany) with 3.8 IU/mL detection limit was estimated for blood units with negative serum anti-HBs and also for 32 whose anti-HBs serum titers were > 1000 IU/L.Also,265 recipients were included,34 of whom were followed up for 3-6 mo.Recipients were investigated for ALT and AST,HBV serological markers:HBsAg(ETI-MAK-4,Dia Sorin-Italy),anti-HBc,quantitative detection of anti-HBs and HBV-DNA.RESULTS:525/3167(16.6%) of blood units were positive for total anti-HBc,64% of those were antiHBs positive.Confirmation by ARCHITECT anti-HBc assay were carried out for 498/525 anti-HBc positive samples,where 451(90.6%) confirmed positive.Reactivity for anti-HBc was considered confirmed only if two positive results were obtained for each sample,giving an overall prevalence of 451/3167(14.2%) for total anti-HBc.HBV DNA was quantified by real time PCR in 52/303(17.2%) of anti-HBc positive blood donors(viral load range:5 to 3.5 x 105 IU/mL) with a median of 200 IU/mL(mean:1.8 x 104 ± 5.1 x 104 IU/mL).AntiHBc was the only marker in 68.6% of donors.Univariate and multivariate logistic analysis for identifying risk factors associated with anti-HBc and HBV-DNA positivity among blood donors showed that age above thirty and marriage were the most significant risk factors for prediction of anti-HBc positivity with AOR 1.8(1.4-2.4) and 1.4(1.0-1.9) respectively.Other risk factors as gender,history of blood transfusion,diabetes mellitus,frequent injections,tattooing,previous surgery,hospitalization,Bilharziasis or positive family history of HBV or HCV infections were not found to be associated with positive anti-HBc antibodies.Among anti-HBc positive blood donors,age below thirty was the most significant risk factor for prediction of HBV-DNA positivity with AOR 3.8(1.8-7.9).According to HBV-DNA concentration,positive samples were divided in two groups;group one with HBV-DNA ≥ 200 IU/mL(n = 27) and group two with HBV-DNA < 200 IU/mL(n = 26).No significant difference was detected between both groups as regards mean age,gender,liver enzymes or HBV markers.Serological profiles of all followed up blood recipients showed that,all were negative for the studied HBV markers.Also,HBV DNA was not detected among studied recipients,none developed post-transfusion hepatitis(PTH) and the clinical outcome was good.CONCLUSION:OBI is prevalent among blood donors.Nucleic acid amplification/HBV anti core screening should be considered for high risk recipients to eliminate risk of unsafe blood donation. | Zeinab N Said Manal H El Sayed Iman I Salama Enas K Aboel-Magd Magda H Mahmoud Maged El Setouhy Faten Mouftah Manal B Azzab Heidi Goubran Amal Bassili Gamal E Esmat | 2013 | World Journal of Hepatology2013，5，2： | 4 |
| 3 | Impact of cytokine storm and systemic inflammation on liver impairment patients infected by SARS-CoV-2:Prospective therapeutic challenges显示文摘Coronavirus disease 2019(COVID-19)is a devastating worldwide pandemic infection caused by a severe acute respiratory syndrome namely coronavirus 2(SARS-CoV-2)that is associated with a high spreading and mortality rate.On the date this review was written,SARS-CoV-2 infected about 96 million people and killed about 2 million people.Several arguments disclosed the high mortality of COVID-19 due to acute respiratory distress syndrome or change in the amount of angiotensin-converting enzyme 2(ACE2)receptor expression or cytokine storm strength production.In a similar pattern,hepatic impairment patients co-infected with SARS-CoV-2 exhibited overexpression of ACE2 receptors and cytokine storm overwhelming,which worsens the hepatic impairment and increases the mortality rate.In this review,the impact of SARS-CoV-2 on hepatic impairment conditions we overviewed.Besides,we focused on the recent studies that indicated cytokine storm as well as ACE2 as the main factors for high COVID-19 spreading and mortality while hinting at the potential therapeutic strategies. | Fares E M Ali Zuhair M Mohammedsaleh Mahmoud M Ali Osama M Ghogar | 2021 | World Journal of Gastroenterology2021，27，15： | 3 |
| 4 | Transient regenerative potential of the neonatal mouse heart显示文摘 | Porrello ER Mahmoud AI Simpson E | | Science0，，： | 2 |
| 5 | COVID-19 and hepatic injury: cellular and molecular mechanisms in diverse liver cells显示文摘The coronavirus disease 2019(COVID-19)represents a global health and economic challenge.Hepatic injuries have been approved to be associated with severe acute respiratory syndrome coronavirus(SARS-CoV-2)infection.The viral tropism pattern of SARS-CoV-2 can induce hepatic injuries either by itself or by worsening the conditions of patients with hepatic diseases.Besides,other factors have been reported to play a crucial role in the pathological forms of hepatic injuries induced by SARS-CoV-2,including cytokine storm,hypoxia,endothelial cells,and even some treatments for COVID-19.On the other hand,several groups of people could be at risk of hepatic COVID-19 complications,such as pregnant women and neonates.The present review outlines and discusses the interplay between SARS-CoV-2 infection and hepatic injury,hepatic illness comorbidity,and risk factors.Besides,it is focused on the vaccination process and the role of developed vac-cines in preventing hepatic injuries due to SARS-CoV-2 infection. | Fares E M Ali Mostafa K Abd El-Aziz Mahmoud M Ali Osama M Ghogar Adel G Bakr | 2023 | World Journal of Gastroenterology2023，29，3： | 2 |
| 6 | Transient regenerative poten- tial of the neonatal mouse heart 显示文摘 | Porrello ER Mahmoud AI Simpson E | 2011 | Science2011，331，6020： | 1 |
| 7 | Accuracy in forecasting: A survey显示文摘 | MAHMOUD E | 1984 | Journal of Forecasting1984，3，： | 1 |
| 8 | Cutaneous manifestations of gastrointestinal diseases显示文摘 | Erin E Boh Raed Mahmoud Faleh al-Smadi | 2002 | Dermatologic Clinics2002，，3： | 1 |
| 9 | A new catalytically active colloidal platinum nanocatalyst: the multi- armed nanostar single crystal显示文摘 | MAHMOUD M A TABOR C E EL-SAYED M A | 2008 | Journal of the American Chemi- cal Society2008，130，14： | 1 |
| 10 | Production of high protein quality noodles using wheat flour fortified with different protein products from lupine显示文摘 | MAHMOUD E A M NASSEF S L AMANY BASUNY M M | 2012 | Annals of Agricultural Science2012，57，2： | 1 |
| 11 | Promoting Exports Through International Trade Shows: A Dual Perspective 显示文摘 | Motwani J Rice G and Mahmoud E | 1992 | Review of Business1992，13，4： | 1 |
| 12 | Chemical composition and biological activity of Citrus jambhiri Lush 显示文摘 | Dalia H Mahmoud Z E Ahmad T | 2011 | Food Chem2011，，127： | 1 |
| 13 | Similarity analysis for effects of variable diffusivity and heat generation/absorption on heat and mass transfer for a MHD stagnation-point flow of a convective viscoelastic fluid over a stretching sheet with a slip velocity 显示文摘 | EL-HAWARY H M MOSTAFA A A MAHMOUD ABDEL- RAHMAN REDA G ABEER S E | 2013 | Mathematical Problems in Engineering2013，，： | 1 |
| 14 | Complex complete synchronization of two nonidentical hyperchaotic complex nonlinear systems显示文摘 | MAHMOUD E E | 2014 | Mathematical Methods in the Applied Sciences2014，37，3： | 1 |
| 15 | Cytotoxic Effect of Chitosan Based Nanocomposite Synthesized by Radiation: In Vitro Liver and Breast Cancer Cell Line显示文摘 | A. Abaza G. A. Mahmoud E. A. Hegazy M. Amin E Shoukry B. Elsheikh | 2018 | Journal of Pharmacy and Pharmacology2018，6，4： | 1 |
| 16 | Process integration technology review:background and applications in the chemical process industry显示文摘 | Russell F D Mahmoud M E | 2003 | Journal of Chemical Technology and Biotechnology2003，78，9： | 1 |
| 17 | Multicentric reticulohistiocytosis: an autoimmune systemic disease? Case re- port of an association with erosive rheumatoid arthritis and sys- temic Sj~gren syndrome显示文摘 | Ben Abdelghani K Mahmoud I Chatelus E | 2010 | Joint Bone Spine2010，77，3： | 1 |
| 18 | Seroepidemiologic study ofChlamydia pneumoniae and other chlamydial species in a hyperen-demic area for trachoma in the Sudan显示文摘 | Mahmoud E Elshibly S Mardh PA | 1994 | Am J Trop Med Hyg1994，51，4： | 1 |
| 19 | On autonomous and nonautonomous modified hyperchaotic complex la systems显示文摘 | Mahmoud G M Ahmed M E Sabor N | 2011 | I J Bifurcation and Chaos2011，21，： | 1 |
| 20 | Longer time inter val between completion of neoadjuvant ehemoradiation and sur- gical resection does not improve downstaging of rectal carcino- ma显示文摘 | Stein D E Mahmoud N N Anne P R | 2003 | Dis Colon Rectum2003，46，： | 1 |
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