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293篇 您的检索式:作者名="Sayed N"
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1Reversibility of minimal hepatic encephalopathy following liver transplantation in Egyptian cirrhotic patients显示文摘AIM To evaluate the reversibility of minimal hepatic encephalopathy(MHE) following liver transplantation(LT) in Egyptian cirrhotic patients. METHODS This prospective study included twenty patients with biopsy-proven liver cirrhosis listed for LT and twenty ageand sex-matched healthy control subjects. All underwent neuro-psychiatric examination, laboratory investigations, radiological studies and psychometric tests including trail making test A(TMT A), TMT B, digit symbol test and serial dotting test. The psychometric hepatic encephalopathy score(PHES) was calculated for patients to diagnose MHE. Psychometric tests were repeated six months following LT in the cirrhotic patient group. RESULTS Before LT, psychometric tests showed highly significant deficits in cirrhotic patients in comparison to controls(P < 0.001). There was a statistically significant improvement in test values in the patient group after LT; however, their values were still significantly worse than those of the controls(P < 0.001). The PHES detected MHE in 16 patients(80%) before LT with a median value of -7 ± 3.5. The median PHES value was significantly improved following LT, reaching-4.5 ± 5(P < 0.001), and the number of patients with MHE decreased to 11(55%). The pre-transplant model for end-stage liver disease(MELD) score ≥ 15 was significantly related to the presence of post-transplant MHE(P = 0.005). More patients in whom reversal of MHE was observed had a pre-transplant MELD score < 15.CONCLUSION Reversal of MHE in cirrhotic patients could be achieved by LT, especially in those with a MELD score < 15.Mahmoud A Osman Moataz M Sayed Khaled A Mansour Shereen A Saleh Wesam A Ibrahim Sara M Abdelhakam Mohamed Bahaa Wael A Yousry Hosam S Elbaz Reginia N Mikhail Azza M Hassan Ehab H Elsayed Dalia A Mahmoud 2016World Journal of Hepatology2016,8,30:11
2Management of adults with coarctation of aorta显示文摘Coarctation of the aorta(CoA)is a relatively common congenital cardiac defect often causing few symptoms and therefore can be challenging to diagnose.The hallmark finding on physical examination is upper extremity hypertension,and for this reason,CoA should be considered in any young hypertensive patient,justifying measurement of lower extremity blood pressure at least once in these individuals.The presence of a significant pressure gradient between the arms and legs is highly suggestive of the diagnosis.Early diagnosis and treatment are important as long-term data consistently demonstrate that patients with CoA have a reduced life expectancy and increased risk of cardiovascular complications.Surgical repair has traditionally been the mainstay of therapy for correction,although advances in endovascular technology with covered stents or stent grafts permit nonsurgical approaches for the management of older children and adults with native CoA and complications.Persistent hypertension and vascular dysfunction can lead to an increased risk of coronary disease,which,remains the greatest cause of long-term mortality.Thus,blood pressure control and periodic reassessment with transthoracic echocardiography and threedimensional imaging(computed tomography or cardiac magnetic resonance)for should be performed regularly as cardiovascular complications may occur decades after the intervention.Pradyumna Agasthi Sai Harika Pujari Andrew Tseng Joseph N Graziano Francois Marcotte David Majdalany Farouk Mookadam Donald J Hagler Reza Arsanjani 2020World Journal of Cardiology2020,12,5:8
3WiGig and IEEE 802.11ad for Multi-Gigabyte-Per-Second WPAN and WLAN显示文摘The Wireless Gigabit Alliance (WiGig) and IEEE 802.11ad are developing a multigigabit wireless personal and local area network (WPAN/WLAN) specification in the 60 GHz millimeter wave band. Chipset manufacturers, original equipment manufacturers (OEMs), and telecom companies are also assisting in this development. 60 GHz millimeter wave transmission will scale the speed of WLANs and WPANs to 6.75 Gbit/s over distances less than 10 meters. This technology is the first of its kind and will eliminate the need for cable around personal computers, docking stations, and other consumer electronic devices. High-definition multimedia interface (HDMI), display port, USB 3.0, and peripheral component interconnect express (PCIe) 3.0 cables will all be eliminated. Fast downloads and uploads, wireless sync, and multi-gigabit-per-second WLANs will be possible over shorter distances. 60 GHz millimeter wave supports fast session transfer (FST) protocol, which makes it backward compatible with 5 GHz or 2.4 GHz WLAN so that end users experience the same range as in today's WLANs. IEEE 802.11ad specifies the physical (PHY) sublayer and medium access control (MAC) sublayer of the protocol stack. The MAC protocol is based on time-division multiple access (TDMA), and the PHY layer uses single carrier (SC) and orthogonal frequency division multiplexing (OFDM) to simultaneously enable low-power, high-performance applications.Sai Shankar N Debashis Dash Hassan El Madi Guru Gopalakrishnan 2012ZTE Communications2012,10,4:4
4Occult 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 2013World Journal of Hepatology2013,5,2:4
5Gastric Adenocarcinoma Arising from Fundic Gland Polyps in a Patient with Familial Adenomatous Polyposis Syndrome显示文摘Garrean Sean Hering Justin Saied Abdul Jani Jigna Espat N Joseph 2008The American Surgeon2008,,1:2
6Networkbased wireless location显示文摘Sayed A H Tarighat A Khaiehnouri N 2005IEEE Signal Processing Magazine2005,,7:1
7Clinical significance of inflammatory markers in polycystic ovary syndrome:their relationship to insulin resistance and body mass index显示文摘Samy N Hashim M Sayed M 2009Dis Markers2009,26,4:1
8Nitroglycerin-induced S-nitrosylation and desensitization of soluble guanylyl cyclase contribute to nitrate tolerance显示文摘Sayed N Kim DD Fioramonti X 2008Cire Res2008,103,:1
9NariS relaxes rat cere- bral artery in vitro via inhibition of l-type voltage-sensitive Ca2+ channel显示文摘Tian X Y Wong W T Sayed N 2012Pharmacol Res2012,65,:1
10The prevalence of coronary artery disease in an urban population in Isfahan, Iran显示文摘Sarraf-Zadegan N Sayed Tabatabaei FA Bashardoost N 1999Acta Cordial1999,54,5:1
11A sensitive immtmoassay based on direct hapten coated format and biotin-streptavidin system for the detection of chloramphenicol 显示文摘SAI N CHEN Y P LIU N 2010Talanta2010,82,4:1
12Behavior of Externally Draped CFRP Tendons in Prestressed Concrete Bridges显示文摘GRACE N F SAYED G A 1998PCI Journal1998,43,5:1
13Effect of oxidant treatment of date pit active carbons used as Pd supports in catalytic hydrogenation of nitrobenzene显示文摘SAI N B GRANGE P VERHASSELT P 2005App Catal A: Gen2005,286,2:1
14A Stochastic Model for Forward-reverse Logistics Network Design under Risk显示文摘SAYED M AFIA N 2010Comput Ind Eng2010,58,3:1
15A novel method for high tempera-ture measurements using fiber Bragg grating sensor 显示文摘Pame Saidi Reddy Ravinuthala L N Sai Prasad KamineniSrimannarayana 2010Optica Applicata2010,11,3:1
16Efficient adaptive receivers for joint equalization and interference cancellation in multiuser space-time block-coded systems显示文摘Younis W M Sayed A H and A1-Dhahir N 2003IEEE Transactions on Signal Processing2003,51,11:1
17Microwave irradiation:An effective method for the preparation of low dispersed Pd/Al2O3 catalysts used in the hydrodechlorination of CCl2F2 to CH2F2显示文摘Sai Prasad P S Lingaiah N Chandrasekhar S 2000Catalysis Letters2000,66,4:1
18Clinical significance of inflam- matory markers in polycystie ovary syndrome:their relationship to insulin resistance and body mass index显示文摘Samy N Hashim M Sayed M 2009Dis Markers2009,26,4:1
19Network- based wireless location:Challenges faced in developing techniques for accurate wireless location information 显示文摘Sayed A H Tarighat A Khajehnouri N 2005IEEE Signal Processing Magazine2005,22,4:1
20Studies on distribution of protein and allergen in graded flours prepared from whole buckwheat grains显示文摘MORITA N MAEDA T SAI R 2006Food Research International2006,39,7:1
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