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| 1 | Influence of vitamin D on liver fibrosis in chronic hepatitis C: A systematic review and meta-analysis of the pooled clinical trials data显示文摘AIM To investigate the relationship between vitamin D and liver fibrosis in hepatitis C-monoinfected or hepatitis C virus(HCV)-human immunodeficiency virus(HIV) coinfected patients. METHODS Pertinent studies were located by a library literature search in PubM ed/Embase/Cochrane/Scopus/LILACS by two individual reviewers. Inclusion criteria:(1) studies with patients with HCV or co-infected HCV/HIV;(2) studies with patients ≥ 18 years old;(3) studies that evaluated liver fibrosis stage, only based on liver biopsy; and(4) studies that reported serum or plasma 25(OH)D levels. Studies that included pediatric patients, other etiologies of liver disease, or did not use liver biopsy for fibrosis evaluation, or studies with inadequate data were excluded. Estimated measures of association reported in the literature, as well as corresponding measures of uncertainty, were recorded and corresponding odds ratios with 95%CI were included in a meta-analysis. RESULTS The pooled data of this systematic review showed that 9 of the 12 studies correlated advanced liver disease defined as a Metavir value of F3/4 with 25(OH) D level insufficiency. The meta-analysis indicated a significant association across studies.CONCLUSION Low vitamin D status is common in chronic Hepatitis C patients and is associated with advanced liver fibrosis. | Alia S Dadabhai Behnam Saberi Katie Lobner Russell T Shinohara Gerard E Mullin | 2017 | World Journal of Hepatology2017，9，5： | 6 |
| 2 | Insights into kinetic inhibition effects of MEG,PVP,and L-tyrosine aqueous solutions on natural gas hydrate formation显示文摘It is necessary to understand all the prerequisites, which result in gas hydrate formation for safe design and control of a variety of processes in petroleum industry. Thermodynamic hydrate inhibitors (THIs) are normally used to preclude gas hydrate formation by shifting hydrate stability region to lower temperatures and higher pressures. Sometimes, it is difficult to avoid hydrate formation and hydrates will form anyway. In this situation, kinetic hydrate inhibitors (KHIs) can be used to postpone formation of gas hydrates by retarding hydrate nucleation and growth rate. In this study, two kinetic parameters including natural gas hydrate formation induction time and the rate of gas consumption were experimentally investigated in the presence of monoethylene glycol (MEG), L-tyrosine, and polyvinylpyrrolidone (PVP) at various concentrations in aqueous solutions. Since hydrate formation is a stochastic phenomenon, the repeatability of each kinetic parameter was evaluated several times and the average values for the hydrate formation induction times and the rates of gas consumption are reported. The results indicate that from the view point of hydrate formation induction time, 2 wt% PVP and 20 wt% MEG aqueous solutions have the highest values and are the best choices. It is also interpreted from the results that from the view point of the rate of gas consumption, 20 wt% MEG aqueous solution yields the lowest value and is the best choice. Finally, it is concluded that the combination of PVP and MEG in an aqueous solution has a simultaneous synergistic impact on natural gas hydrate formation induction time and the rate of gas consumption. Furthermore, a semi-empirical model based on chemical kinetic theory is applied to evaluate the hydrate formation induction time data. A good agreement between the experimental and calculated hydrate formation induction time data is observed. | Amir Saberi Abdolmohammad Alamdari Ali Rasoolzadeh Amir H.Mohammadi | 2021 | Petroleum Science2021，18，2： | 5 |
| 3 | Transjugular intrahepatic portosystemic stent shunt for medically refractory hepatic hydrothorax:A systematic review and cumulative meta-analysis显示文摘AIM:To assess the effectiveness of transjugular intrahepatic portosystemic stent shunt(TIPSS) in refractory hepatic hydrothorax(RHH) in a systematic review and cumulative meta-analysis.METHODS:A comprehensive literature search was conducted on MEDLINE,EMBASE,and Pub Med covering the period from January 1970 to August 2014.Two authors independently selected and abstracted data from eligible studies.Data were summarized using a random-effects model.Heterogeneity was assessed using the I2 test.RESULTS:Six studies involving a total of 198 patients were included in the analysis.The mean(SD) age of patients was 56(1.8) years.Most patients(56.9%) had Child-Turcott-Pugh class C disease.The mean duration of follow-up was 10 mo(range,5.7-16 mo).Response to TIPSS was complete in 55.8%(95%CI:44.7%-66.9%),partial in 17.6%(95%CI:10.9%-24.2%),and absent in 21.2%(95%CI:14.2%-28.3%).The mean change in hepatic venous pressure gradient post-TIPSS was 12.7 mm Hg.The incidence of TIPSS-related encephalopathy was 11.7%(95%CI:6.3%-17.2%),and the 45-d mortality was 17.7%(95%CI:11.34%-24.13%).CONCLUSION:TIPSS is associated with a clinically relevant response in RHH.TIPSS should be considered early in these patients,given its poor prognosis. | Ivo C Ditah Badr F Al Bawardy Behnam Saberi Chobufo Ditah Patrick S Kamath | 2015 | World Journal of Hepatology2015，7，13： | 5 |
| 4 | Methylenetetrahydrofolate reductase C677T genotype affects promoter methylation of tumor-specific genes in sporadic colorectal cancer through an interaction with folate/vitamin B_(12) status显示文摘AIM:To evaluate joint effects of Methylentetra-hydrofolate reductase(MTHFR) C677T genotypes,and serum folate/vitamin B12 concentrations on promoter methylation of tumor-associated genes among Iranian colorectal cancer patients. METHODS:We examined the associations between MTHFR C677T genotype,and promoter methylation of P16,hMLH1,and hMSH2 tumor-related genes among151 sporadic colorectal cancer patients. The promoter methylation of tumor-related genes was determined by methylation-specific PCR. Eighty six patients from whom fresh tumor samples were obtained and 81 controls were also examined for serum folate and vitamin B12 concentrations by a commercial radioimmunoassay kit. RESULTS:We found 29.1% of cases had tumors with at least one methylated gene promoter. In case-case comparison,we did not find a significant association between methylation in tumors and any single genotype. However,in comparison to controls with the CC genotype,an increased risk of tumor methylation was associated with the CT genotype(OR = 2.5;95% CI,1.1-5.6) . In case-case comparisons,folate/vitamin B12 levels were positively associated with tumor methylation. Adjusted odds ratios for tumor methylation in cases with high(above median) versus low(below median) serum folate/vitamin B12 levels were 4.9(95% CI,1.4-17.7) ,and 3.9(95% CI,1.1-13.9) ,respectively. The frequency of methylated tumors was significantly higher in high methyl donor than low methyl donor group,especially in those with MTHFR CT(P = 0.01) ,and CT/TT(P = 0.002) genotypes,but not in those with the CC genotype(P = 1.0) . CONCLUSION:We conclude that high concentrations of serum folate/vitamin B12 levels are associated with the risk of promoter methylation in tumor-specific genes,and this relationship is modified by MTHFR C677T genotypes. | Pooneh Mokarram Fakhraddin Naghibalhossaini Mehdi Saberi Firoozi Seyed Vahid Hosseini Ahmad Izadpanah Heshmetalah Salahi Seyed Ali Malek-Hosseini Abdoulrasool Talei Mehra Mojallal | 2008 | World Journal of Gastroenterology2008，14，23： | 5 |
| 5 | Surface modification of magnesium alloys using thermal and solid-state cold spray processes:Challenges and latest progresses显示文摘Potential engineering applications of magnesium(Mg)and Mg-based alloys,as the lightest structural metal,have made them a popular subject of study.However,the inferior corrosion and wear characteristics significantly limit their application range.It is widely recognized that surface treatment is the most commonly utilized technique for remarkably improving a substrate’s surface characteristics.Numerous methods have been introduced for the surface treatment of Mg and Mg-based alloys to improve their corrosion behavior and tribological performance.Among these,thermal spray(TS)technology provides several methods for deposition of various functional metallic,ceramic,cermet,or other coatings tailored to particular conditions.Recent researches have shown the tremendous potential for thermal spray coated Mg alloys for biomedical and industrial applications.In this context,the cold spray(CS)method,as a comparatively new TS coating technique,can generate the coating layer using kinetic energy rather than combined thermal and kinetic energies,like the high-velocity oxy-fuel(HVOF)spray method.Moreover,the CS process,as a revolutionary method,is able to repair and refurbish with a faster turnaround time;it also provides solutions that do not require dealing with the thermal stresses that are part of the other repair processes,such as welding or other TS processes using a high-temperature flame.In this review paper,the recently designed coatings that are specifically applied to Mg alloys(primarily for industrial applications)employing various coating processes are reviewed.Because of the increased utilization of CS technology for both 3D printed(additively manufactured)coatings and repair of structurally critical components,the most recent CS methods for the surface treatment,repair,and refurbishment of Mg alloys as well as their benefits and restrictions are then discussed and reviewed in detail.Lastly,the prospects of this field of study are briefly discussed,along with a summary of the presented work. | Mohammadreza Daroonparvar Hamid Reza Bakhsheshi-Rad Abbas Saberi Mahmood Razzaghi Ashish K Kasar Seeram Ramakrishna Pradeep L.Menezes Manoranjan Misra Ahmad Fauzi Ismail Safian Sharif Filippo Berto | 2022 | Journal of Magnesium and Alloys2022，10，8： | 4 |
| 6 | Isolated arterioportal fistula presenting with variceal hemorrhage显示文摘We report a case of life-threatening hematemesis due to portal hypertension caused by an isolated arterioportal fistula (APF). Intrahepatic APFs are extremely rare and are a cause of presinusoidal portal hypertension. Etiologies for APFs are comprised of precipitating trauma, malignancy, and hereditary hemorrhagic telangiectasia, but these were not the case in our patient. Idiopathic APFs are usually due to congenital vascular abnormalities and thus usually present in the pediatric setting. This is one of the first cases of adult-onset isolated APF who presented with portal hypertension and was successfully managed through endoscopic hemostasis and subsequent interventional radiological embolization. | Anupama Nookala Behnam Saberi Ramon Ter-Oganesyan Gary Kanel Phillip Duong Takeshi Saito | 2013 | World Journal of Gastroenterology2013，19，17： | 4 |
| 7 | Vitamin D levels do not predict the stage of hepatic fibrosis in patients with non-alcoholic fatty liver disease: A PRISMA compliant systematic review and meta-analysis of pooled data显示文摘AIM To investigate the relationship between 25-hydroxyvitamin D [25(OH)D] levels and fibrosis stage in patients with non-alcoholic fatty liver disease(NAFLD).METHODS Two individual reviewers identified relevant studies using the Pub Med, EMBASE, Cochrane, and Scopus databases. Inclusion criteria were as follows:(1) Studies that evaluated adults with NAFLD and serum or plasma 25(OH)D levels; and(2) assessed fibrosis stage using liver biopsy. A rigorous analysis yielded six articles as having sufficient data to employ in evaluating the association of serum vitamin D levels in patients with NAFLD based on their liver fibrosis stage by histopathological analysis. The lead investigators of each of the six studies were contacted and the data were collected. To meta-analyze vitamin D levels in F0-F2 vs F3-F4 fibrosis, a random-effects meta-analysis fit using restricted maximum likelihood was applied. To examine trends across each stage of fibrosis with respect to vitamin D levels, a meta-regression was performed. P < 0.05 was considered statistically significant. RESULTS A total of 937 subjects from six studies were included in the final analysis to evaluate the association of serum vitamin D levels in patients with NAFLD based on their liver fibrosis stage by histopathological analysis. The lead investigators of each of the six studies were contacted and the data were collected. First, the investigators performed a meta-analysis to compare serum vitamin D levels in patients with NAFLD with stage F0-F2 compared to F3-F4, which did not show significance [meta-estimate of the pooled mean difference =-0.86, P = 0.08(-4.17, 2.46)]. A metaregression evaluation of serum vitamin 25(OH)D levels across the individual stages(F0-F4) of fibrosis did not show an association for the six included studies.CONCLUSION Low vitamin D status is not associated with higher stages of liver fibrosis in patients with NAFLD. | Behnam Saberi Alia S Dadabhai Julie Nanavati Lin Wang Russell T Shinohara Gerard E Mullin | 2018 | World Journal of Hepatology2018，10，1： | 3 |
| 8 | A new stable compensator design for exact and approximate loop transfer recovery 显示文摘 | Chen B M Saberi A Sannuti P | 1991 | Automatica1991，27，2： | 2 |
| 9 | Adwords and Generalized Online Matching显示文摘 | Mehta A Saberi A Vazirani U | 2007 | Journal of the ACM2007，54，5： | 1 |
| 10 | A reducedorder observer based controller design for H∞optimization 显示文摘 | Stroorvogel A A Saberi A Chen B M | 1994 | IEEE Trans on Automatic Control1994，39，2： | 1 |
| 11 | A reduced order observer based Controller design for opertimization显示文摘 | Stoorvogel A A Saberi A Chen B M | | 0，，： | 1 |
| 12 | The extraction of learner’s ability in e-learning environment using Bayesian network显示文摘 | Saberi N Montazer G A | 2012 | Educational Technology Letters2012，，2： | 1 |
| 13 | Quadratic-type Lyapunov functions for singularly perturbed systems显示文摘 | Saberi A Khalil H | 1984 | IEEE Trans on Automatic Control1984，29，6： | 1 |
| 14 | Use of serologic markers as a screening tool in inflammatory bowel disease compared with elevated erythrocyte sedimentation rate and anemia 显示文摘 | Sabery N Bass D | 2007 | Pediatrics2007，119，1： | 1 |
| 15 | Influ- ence of plastic anisotropy on the mechanical behavior of clinched joint of different coated thin steel sheets 显示文摘 | SABERI S ENZINGER N VALLANTL R | 2008 | International Journal of Material Forming2008，，： | 1 |
| 16 | Randomised controlled trial assessing the impact of a nurse delivered, flow monitored protocol for optimisation of circulatory status after cardiac surgery 显示文摘 | McKendry M McGloin H Saberi D | 2004 | BMJ2004，329，7460： | 1 |
| 17 | Pharyngeal anesthesia during sedated EGDs:is 'the spray' beneficial? A meta-analysis and sys- tematic review 显示文摘 | Evans LT Saberi S Kim HM | 2006 | Gastrointest Endosc2006，63，6： | 1 |
| 18 | Output regulation for linear systems subject to input saturation显示文摘 | Lin Z Stoovogel A Saberi A | 1996 | Automatica1996，32，1： | 1 |
| 19 | An initial value theorem for nonlinear singularly perturbed systems 显示文摘 | SABERI A KHALIL H K | 1984 | Systems and Control Letters1984，4，5： | 1 |
| 20 | Botulinum toxin:mechanisms of action显示文摘 | Dressler D Saberi FA Barbosa ER | | 0，，： | 1 |
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