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286篇 您的检索式:作者名="RAMIS M"
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1Recent biological trends in management of fracture non-union显示文摘Bone regeneration is a complex, well-orchestrated physiological process of bone formation, which can be seen during normal fracture healing, and is involved in continuous remodelling throughout adult life. Currently,there is a plethora of different strategies to augment the impaired or 'insufficient' bone-regeneration process, including the 'gold standard' autologous bone graft, free fibula vascularised graft, allograft implantation, and use of growth factors, osteoconductive scaffolds, osteoprogenitor cells and distraction osteogenesis. Improved 'local' strategies in terms of tissue engineering and gene therapy, or even 'systemic' enhancement of bone repair, are under intense investigation, in an effort to overcome the limitations of the current methods, to produce bone-graft substitutes with biomechanical properties that are as identical to normal bone as possible, to accelerate the overall regeneration process, or even to address systemic conditions, such as skeletal disorders and osteoporosis. An improved understanding of the molecular and cellular events that occur during bone repair and remodeling has led to the development of biologic agents that can augment the biological microenvironment and enhance bone repair. Orthobiologics, including stem cells, osteoinductive growth factors, osteoconductive matrices, and anabolic agents, are available clinically for accelerating fracture repair and treatment of compromised bone repair situations like delayed unions and nonunions. A lack of standardized outcome measures for comparison of biologic agents in clinical fracture repair trials, frequent off-label use, and a limited understanding of the biological activity of these agents at the bone repair site have limited their efficacy in clinical applications.Khaled M Emara Ramy Ahmed Diab Ahmed Khaled Emara 2015World Journal of Orthopedics2015,6,8:13
2Predictors of long-term survival after pancreaticoduodenectomy for peri-ampullary adenocarcinoma: A retrospective study of 5-year survivors显示文摘Background: Pancreaticoduodenectomy(PD) is the standard curative treatment for periampullary tumors. The aim of this study is to report the incidence and predictors of long-term survival( ≥ 5 years) after PD. Methods: This study included patients who underwent PD for pathologically proven periampullary adenocarcinomas. Patients were divided into 2 groups: group(I) patients who survived less than 5 years and group(II) patients who survived ≥ 5 years. Results: There were 47(20.6%) long-term survivors( ≥ 5 years) among 228 patients underwent PD for periampullary adenocarcinoma. Patients with ampullary adenocarcinoma represented 31(66.0%) of the long-term survivors. Primary analysis showed that favourable factors for long-term survival include age < 60 years old, serum CEA < 5 ng/mL, serum CA 19-9 < 37 U/mL, non-cirrhotic liver, tumor size < 2 cm, site of primary tumor, postoperative pancreatic fistula, R0 resection, postoperative chemotherapy, and no recurrence. Multivariate analysis demonstrated that CA 19-9 < 37 U/mL [OR(95% CI) = 1.712(1.24 8–2.34 8), P = 0.001], smaller tumor size [OR(95% CI) = 1.335(1.032–1.726), P = 0.028] and R0 resection [OR(95% CI) = 3.098(2.095–4.582), P < 0.001] were independent factors for survival ≥ 5 years. The prognosis was best for ampullary adenocarcinoma, for which the median survival was 54 months and 5-year survival rate was 39.0%, and the poorest was pancreatic head adenocarcinoma, for which the median survival was 27 months and 5-year survival rate was 7%. Conclusions: The majority of long-term survivors after PD for periampullary adenocarcinoma are patients with ampullary tumor. CA 19-9 < 37 U/mL, smaller tumor size, and R0 resection were found to be independent factors for long-term survival ≥ 5 years.Ayman El Nakeeb Mohamed El Sorogy Helmy Ezzat Rami Said Mohamed El Dosoky Mohamed Abd El Gawad Ahmed M Elsabagh Ehab El Hanafy 2018Hepatobiliary & Pancreatic Diseases International2018,17,5:6
3Biliary leakage following pancreaticoduodenectomy:Prevalence,risk factors and management显示文摘Background: Few studies investigated biliary leakage after pancreaticoduodenectomy(PD) especially when compared to postoperative pancreatic fistula(POPF). This study was to determine the incidence of biliary leakage after PD, predisposing factors of biliary leakage, and its management. Methods: We retrospectively studied all patients who underwent PD from January 2008 to December 2017 at Gastrointestinal Surgery Center, Mansoura University, Egypt. According to occurrence of postoperative biliary leakage, patients were divided into two groups. Group(1) included patients who developed biliary leakage and group(2) included patients without identified biliary leakage. The preoperative data, operative details, and postoperative morbidity and mortality were analyzed. Results: The study included 555 patients. Forty-four patients(7.9%) developed biliary leakage. Ten patients(1.8%) had concomitant POPF. Multivariate analysis identified obesity and time needed for hepaticojejunostomy reconstruction as independent risk factors of biliary leakage, and no history of preoperative endoscopic retrograde cholangiopancreatiography(ERCP) as protective factor. Biliary leakage from hepaticojejunostomy after PD leads to a significant increase in development of delayed gastric emptying, and wound infection. The median hospital stay and time to resume oral intake were significantly greater in the biliary leakage group. Non-surgical management was needed in 40 patients(90.9%). Only 4 patients(9.1%) required re-exploration due to biliary peritonitis and associated POPF. The mortality rate in the biliary leakage group was significantly higher than that of the non-biliary leakage group(6.8% vs 3.9%, P = 0.05). Conclusions: Obesity and time needed for hepaticojejunostomy reconstruction are independent risk factors of biliary leakage, and no history of preoperative ERCP is protective factor. Biliary leakage increases the risk of morbidity and mortality especially if concomitant with POPF. However, biliary leakage can be conservatively managed in majority of cases.Ayman El Nakeeb Mohamed El Sorogy Hosam Hamed Rami Said Mohamad Elrefai Helmy Ezzat Waleed Askar Ahmed M Elsabbagh 2019Hepatobiliary & Pancreatic Diseases International2019,18,1:4
4A randomized open-label trial of on-demand rabeprazole vs ranitidine for patients with non-erosive reflux disease显示文摘AIM:To compare the efficacy of the proton-pump inhibitor,rabeprazole,with that of the H 2-receptor antagonist,ranitidine,as on-demand therapy for relieving symptoms associated with non-erosive reflux disease(NERD).METHODS:This is a single center,prospective,randomized,open-label trial of on-demand therapy with rabeprazole(group A) vs ranitidine(group B) for 4 wk.Eighty-three patients who presented to the American University of Beirut Medical Center with persistent gastroesophageal reflux disease(GERD) symptoms and a normal upper gastrointestinal endoscopy were eligible for the study.Patients in group A(n = 44) were allowed a maximum rabeprazole dose of 20 mg twice daily,while those in group B(n = 39) were allowed a maximum ranitidine dose of 300 mg twice daily.Efficacy was assessed by patient evaluation of global symptom relief,scores of the SF-36 quality of life(QoL) questionnaires,total number of pills used,and number of medication-free days.RESULTS:Among the 83 patients who were enrolled in the study,76 patients(40 in the rabeprazole group and 36 in the ranitidine group) completed the 4-wk trial.Baseline characteristics were comparable between both groups.After 4 wk,there was no significant difference in the subjective global symptom relief between the rabeprazole and the ranitidine groups(71.4% vs 65.4%,respectively;P = 0.9).There were no statistically significant differences between mean cumulative scores of the SF-36 QoL questionnaire for the two study groups(rabeprazole 22.40 ± 27.53 vs ranitidine 17.28 ± 37.06;P = 0.582).There was no significant difference in the mean number of pills used(rabeprazole 35.70 ± 29.75 vs ranitidine 32.86 ± 26.98;P = 0.66).There was also no statistically significant difference in the mean number of medication-free days between both groups.CONCLUSION:Rabeprazole has a comparable efficacy compared to ranitidine when given on-demand for the treatment of NERD.Both medications were associated with improved quality of life.Abdallah A Kobeissy Jana G Hashash Faek R Jamali Assaad M Skoury Reham Haddad Sarah El-Samad Rami Ladki Rola Aswad Assaad M Soweid 2012World Journal of Gastroenterology2012,18,19:4
5Impact of cirrhosis on surgical outcome after pancreaticoduodenectomy显示文摘AIM:To elucidate surgical outcomes of pancreaticoduodenectomy(PD)in patients with liver cirrhosis.METHODS:We studied retrospectively all patients who underwent PD in our centre between January 2002and December 2011.Group A comprised patients with cirrhotic livers,and Group B comprised patients with non-cirrhotic livers.The cirrhotic patients had ChildPugh classes A and B(patient’s score less than 8).Preoperative demographic data,intra-operative data and postoperative details were collected.The primary outcome measure was hospital mortality rate.Secondary outcomes analysed included duration of the operation,postoperative hospital stay,postoperative morbidity and survival rate.RESULTS:Only 67/442 patients(15.2%)had cirrhotic livers.Intraoperative blood loss and blood transfusion were significantly higher in group A(P=0.0001).The mean surgical time in group A was significantly longer than that in group B(P=0.0001).Wound complications(P=0.02),internal haemorrhage(P=0.05),pancreatic fistula(P=0.02)and hospital mortality(P=0.0001)were significantly higher in the cirrhotic patients.Postoperative stay was significantly longer in group A(P=0.03).The median survival was 19 mo in group A and 24 mo in group B.Portal hypertension(PHT)was present in 16/67 cases of cirrhosis(23.9%).The intraoperative blood loss and blood transfusion were significantly higher in patients with PHT(P=0.001).Postoperative morbidity(0.07)and hospital mortality(P=0.007)were higher in cirrhotic patients with PHT.CONCLUSION:Patients with periampullary tumours and well-compensated chronic liver disease should be routinely considered for PD at high volume centres with available expertise to manage liver cirrhosis.PD is associated with an increased risk of postoperative morbidity in patients with liver cirrhosis;therefore,it is only recommended in patients with Child A cirrhosis without portal hypertension.Ayman El Nakeeb Ahmad M Sultan Tarek Salah Mohamed El Hemaly Emad Hamdy Ali Salem Ahmed Moneer Rami Said Ahmed AbuEleneen Mostafa Abu Zeid Talaat Abdallah Mohamed Abdel Wahab 2013World Journal of Gastroenterology2013,19,41:3
6Assessment of lnc RNA GAS5, lnc RNA HEIH, lnc RNA BISPR and its m RNA BST2 as serum innovative non-invasive biomarkers: Recent insights into Egyptian patients with hepatitis C virus type 4显示文摘BACKGROUND Hepatitis C virus(HCV)infection and its consequent complications are undeniably a public health burden worldwide,particularly in Egypt.Emerging evidence suggests that many lncRNAs have relevant roles in viral infections and antiviral responses.AIM To investigate the expression profiles of circulating lncRNAGAS5,lncRNAHEIH,lncRNABISPR and mRNABST2 in naïve,treated and relapsed HCV Egyptian patients,to elucidate relation to HCV infection and their efficacy as innovative biomarkers for the diagnosis and prognosis of HCV GT4.METHODS One hundred and thirty HCV-infected Egyptian patients and 20 healthy controls were included in this study.Serum lncRNAs and mRNABST2 were measured using quantitative real-time polymerase chain reaction(qRT-PCR).RESULTS Our results indicated that serum lncRNAGAS5 and LncRNABISPR were upregulated,whereas mRNA BST2 and LncRNA HEIH were downregulated in naïve patients.In contrast,HCV patients treated with sofosbuvir and simeprevir;with sofosbuvir and daclatasvir;or with sofosbuvir,daclatasvir and ribavirin exhibited lower levels of lncRNAGAS5 and lncRNABISPR with higher mRNABST2 compared to naïve patients.Notably,patients relapsed from sofosbuvir and simeprevir showed higher levels of these lncRNAs with lower mRNABST2 compared to treated patients.LncRNAGAS5 and lncRNABISPR were positively correlated with viral load and ALT at P<0.001,whereas mRNABST2 was negatively correlated with viral load at P<0.001 and ALT at P<0.05.Interestingly,a significant positive correlation between lncRNA HEIH and AFP was observed at P<0.001.CONCLUSION Differential expression of these RNAs suggests their involvement in HCV pathogenesis or antiviral response and highlights their promising roles in diagnosis and prognosis of HCV.Nourhan M El Samaloty Marwa I Shabayek Ramy S Ghait Shohda A El-Maraghy Sherine M Rizk Maha M El-Sawalhi 2020World Journal of Gastroenterology2020,26,2:2
7Potential role of killer immunoglobulin receptor genes among individuals vaccinated against hepatitis B virus in Lebanon显示文摘AIM To explore the role of killer immunoglobulin receptor(KIR) genes in responsiveness or non-responsiveness to vaccination against hepatitis B virus.METHODS We recruited 101 voluntary participants between March 2010 and December 2011. Sera samples from vaccinated and non-vaccinated participants were tested for the presence of anti-HBs antibodies as a measure of protection against hepatitis B, hepatitis B surface antigen and hepatitis B core antibody as indicators ofinfection by enzyme-linked immunosorbent assay. KIR gene frequencies were determined by polymerase chain reaction.RESULTS Sera samples from 99 participants were tested for the levels of anti-HBs as an indicator of protection(≥ 10 mI U/ml) following vaccination as defined by the World Health Organization international reference standard. Among the vaccinated participants, 47%(35/74) had anti-HBs titers above 100 mI U/ml, 22%(16/74) had antiHBs ranging between 10-100 mI U/ml, and 20%(15/74) had values of less than 10 mI U/ml. We report the lack of significant association between the number of vaccine dosages and the titer of antibodies among our vaccinated participants. The inhibitory KIR2Dl1, KIR2Dl4, KIR3Dl1, KIR3Dl2, and KIR3 Dl were detected in more than 95%, whereas KIR2Dl2, KIR2Dl3, KIR2Dl5(KR2Dl5A and KIR2Dl5B) were expressed in 56%, 84% and 42%(25% and 29%) of participants, respectively. The observed frequency of the activating KIR genes ranged between 35% and 55% except for KIR2DS4, detected in 95% of the study participants(40.6% 2DS4*001/002; 82.2% 2DS4*003/007). KIR2DP1 pseudogene was detected in 99% of our participants, whereas KIR3DP*001/02/04 and KIR3DP1*003 had frequencies of 17% and 100%, respectively. No association between the frequency of KIR genes and anti-HBs antibodies was detected. When we compared the frequency of KIR genes between vaccinated individuals with protective antibodies titers and those who lost their protective antibody levels, we did not detect a significant difference. KIR2Dl5 B was significantly different among different groups of vaccinated participants(group Ⅰ > 100 mI U/ml, group Ⅱ 10-100 mI U/ml, group Ⅲ < 10 mI U/ml and group Ⅳ with undetectable levels of protective antibodies). CONCLUSION To our knowledge, this is the first study screening for the possible role of KIR genes among individuals vaccinated against hepatitis B virus(HBV). Our results can be used to design larger studies to better understand the role of KIR genes in protection against or susceptibility to HBV post vaccination.Nada M Melhem Rami A Mahfouz Khalil Kreidieh Rabab Abdul-Khalik Rolla El-Khatib Reem Talhouk Umayya Musharrafieh Ghassan Hamadeh 2016World Journal of Hepatology2016,8,29:2
8Split-dose menthol-enhanced PEG vs PEG-ascorbic acid for colonoscopy preparation显示文摘AIM:To compare the efficacy and palatability of 4L polyethylene glycol electrolyte(PEG)plus sugar-free menthol candy(PEG+M)vs reduced-volume 2 L ascorbic acid-supplemented PEG(Asc PEG).METHODS:In a randomized controlled trial setting,ambulatory patients scheduled for elective colonoscopy were prospectively enrolled.Patients were randomized to receive either PEG+M or Asc PEG,both splitdosed with minimal dietary restriction.Palatability was assessed on a linear scale of 1 to 5(1=disgusting;5=tasty).Quality of preparation was scored by assignment-blinded endoscopists using the modified Aronchick and Ottawa scales.The main outcomes were the palatability and efficacy of the preparation.Secondary outcomes included patient willingness to retake the same preparation again in the future and completion of the prescribed preparation.RESULTS:Overall,200 patients were enrolled(100patients per arm).PEG+M was more palatable than Asc PEG(76%vs 62%,P=0.03).Completing the preparation was not different between study groups(91%PEG+M vs 86%Asc PEG,P=0.38)but more patients were willing to retake PEG+M(54%vs 40%respectively,P=0.047).There was no significant difference between PEG+M vs Asc PEG in adequate cleansing on both the modified Aronchick(82%vs77%,P=0.31)and the Ottawa scale(85%vs 74%,P=0.054).However,PEG+M was superior in the left colon on the Ottawa subsegmental score(score0-2:94%for PEG+M vs 81%for Asc PEG,P=0.005)and received significantly more excellent ratings than Asc PEG on the modified Aronchick scale(61%vs 43%,P=0.009).Both preparations performed less well in afternoon vs morning examinations(inadequate:29%vs 15.2%,P=0.02).CONCLUSION:4 L PEG plus menthol has better palatability and acceptability than 2 L ascorbic acidPEG and is associated with a higher rate of excellentpreparations;Clinicaltrial.gov identifier:NCT01788709.Ala I Sharara Ali H Harb Fayez S Sarkis Jean M Chalhoub Rami Badreddine Fadi H Mourad Mahmoud Othman Omar Masri 2015World Journal of Gastroenterology2015,21,6:2
9Linear matrix inequalities, riccati equations, and indefinite stochastic linear quadratic con- trois显示文摘Rami M Ait Zhou X Y 2000IEEE Transaction on Automatic Control2000,45,6:1
10Identification and characterization of inland ship plumes over Vancouver, BC显示文摘Lu G Brook J R Rami Alfarra M 2006Atmospheric Environment2006,40,15:1
11Towards a saturated sorghum map using RFLP and AFLP markers显示文摘Boivin K Deu M Rami J F 1999TAG Theoretical and Applied Genetics1999,98,2:1
12LMI optimization for nonstandard riccati equations arising in stochastic control显示文摘RAMI M A GHAOUI L E 1996IEEE Transactions on Automatic Control1996,41,11:1
13Transgenic mouse model of ventricular preexcitation and atrioventricular reentrant tachycardia induced by an AMP-activated protein kinase loss-of-function mutation responsible for Wolff-Parkinson-White syndrome显示文摘Sidhu J S Rajawat Y S Rami T G Gollob M H Wang Z Yuan R 2005Circulation2005,111,:1
14An FT-IR study of the adsorption and oxidation of N-containing compounds over Fe 2 O 3 /Al 2 O 3 SCR catalysts显示文摘Ramis G Angeles Larrubia M 2004Journal of Molecular Catalysis A:Chemical2004,215,12:1
15New improved thermosets obtained from DGEBA and a hyperbranched poly (ester-amide)显示文摘MoreU M Ramis X Ferrando F 2009Polymer2009,50,:1
16Towards a saturated sorghum map using RFLP and AFLP markers显示文摘Boivin K Deu M Rami J F Trouche G and Hamon P 1999Theor Appl Genet1999,98,:1
17Catalytic abatement of NQx: Chemical and mechanistic aspects 显示文摘BUSCA G LARRUBIA M A ARRIGHI L RAMIS G 1993Catalysis Toda-1993,16,:1
18Angiotensin Ⅱ stimulates the production of NO and peroxynitrite in endothelial cells显示文摘Pueyo M E Arnal J F Rami J 1996Am J Physiol1996,274,11:1
19An FT-IR study of the adsorption and oxidation of N-containing compounds over Fe 2 O 3 -TiO 2 SCR catalysts显示文摘Larrubia M A Ramis G Busca G 2001Applied Catalysis B:Environmental2001,30,12:1
20Real time physically-based modeling and simulation of cratering and fragmentation of terrain 显示文摘RAMI N PROCTOR M D 2007Simulation2007,83,12:1
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