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| 1 | A handy review of carpal tunnel syndrome:From anatomy to diagnosis and treatment显示文摘Carpal tunnel syndrome(CTS) is the most commonly diagnosed disabling condition of the upper extremities. It is the most commonly known and prevalent type of peripheral entrapment neuropathy that accounts for about 90% of all entrapment neuropathies. This review aims to provide an outline of CTS by considering anat-omy, pathophysiology, clinical manifestation, diagnostic modalities and management of this common condition, with an emphasis on the diagnostic imaging evaluation. | Mohammad Ghasemi-rad Emad Nosair Andrea Vegh Afshin Mohammadi Adam Akkad Emal Lesha Mohammad Hossein Mohammadi Doaa Sayed Ali Davarian Tooraj Maleki-Miyoab Anwarul Hasan | 2014 | World Journal of Radiology2014,6,6: | 24 |
| 2 | 合并糖代谢异常的冠心病患者血浆脂联素水平变化及其临床意义显示文摘目的:检测脂联素(adiponectin,ADPN)在合并糖代谢异常的冠心病患者血浆中浓度的变化,探讨其临床意义。方法:收集2009年8月至2010年4月在湘雅医院心内科经冠状动脉造影(coronary angiography,CAG)检查证实为冠心病的患者87名,根据糖代谢情况分为单纯冠心病组(coronary heart disease group,CHD组,n=31)、冠心病合并糖耐量异常组(CHD combine with impaired glucose tolerance group,CHD+IGT组,n=28)和冠心病合并糖尿病组(CHDcombine with diabetes mellitus group,CHD+DM组,n=28),另选健康体检者31例为正常对照组(normal control group,NC组)。采用酶联免疫吸附法检测血浆ADPN水平;为所有受试对象测身高、体质量、腰围、血压;测空腹血糖、胰岛素、血脂、高敏C反应蛋白(high-sensitivity C-reactive protein,hs-CRP)、游离脂肪酸(free fatty acid,FFA)和肝、肾功能等,计算体质量指数(body mass index,BMI)和胰岛素抵抗指数(homeostasis model assessment for insulin resistance,HOMA-IR)。结果:1)CHD组、CHD+IGT组、CHD+DM组患者血浆ADPN水平均低于NC组(P<0.05);2)与CHD组相比,CHD+DM组ADPN水平最低,CHD+IGT组次之,各组间差异有统计学意义(P<0.05);3)ADPN与HDL-C呈正相关(r=0.483,P<0.01),与hs-CRP和冠脉Gensini积分呈负相关(r=–0.489,P<0.05;r=–0.252,P<0.05)。结论:冠心病患者血浆ADPN浓度降低;合并糖代谢异常的冠心病患者血浆ADPN浓度更低,且随着糖代谢异常程度加重降低更显著;冠心病与糖代谢异常是影响血浆ADPN浓度改变的两个重要因素,血浆ADPN水平显著降低反映了上述两种疾病状态的叠加作用。ADPN联合HDL-C,hs-CRP,Gensini积分等血清学指标可为判断合并糖代谢异常的冠心病患者的疾病严重程度提供一定参考。 | 夏珂 郭兰燕 赵震宇 Ali Sheikh Md Sayed 李非 杨天伦 | 2012 | 中南大学学报(医学版)2012,37,2: | 17 |
| 3 | Plant-derived anticancer agents: A green anticancer approach显示文摘Cancer is a frightful disease and represents one of the biggest health-care issues for the human race and demands a proactive strategy for cure. Plants are reservoirs for novel chemical entities and provide a promising line for research on cancer. Hitherto, being effective, chemotherapy is accompanied by certain unbearable side effects. Nevertheless,plants and plant derived products is a revolutionizing field as these are Simple, safer, ecofriendly, low-cost, fast, and less toxic as compared with conventional treatment methods.Phytochemicals are selective in their functions and acts specifically on tumor cells without affecting normal cells. Carcinogenesis is complex phenomena that involves many signaling cascades. Phytochemicals are considered suitable candidates for anticancer drug development due to their pleiotropic actions on target events with multiple manners. The research is in progress for developing potential candidates(those can block or slow down the growth of cancer cells without any side effects) from these phytochemicals. Many phytochemicals and their derived analogs have been identified as potential candidates for anticancer therapy. Effort has been made through this comprehensive review to highlight the recent developments and milestones achieved in cancer therapies using phytomolecules with their mechanism of action on nuclear and cellular factors. Furthermore, drugs for cancer treatment and their limitations have also been discussed. | Javed Iqbal Banzeer Ahsan Abbasi Tariq Mahmood Sobia Kanwal Barkat Ali Sayed Afzal Shah Ali Talha Khalil | 2017 | Asian Pacific Journal of Tropical Biomedicine2017,7,12: | 8 |
| 4 | Incidence and characteristics of HBV reactivation in hematological malignant patients in south Egypt显示文摘AIM:To investigate characteristics of hepatitis B virus(HBV)implicated in HBV reactivation in patients with hematological malignancies receiving immunosuppressive therapy.METHODS:Serum samples were collected from 53 patients with hematological malignancies negative for hepatitis B surface antigen(HBsAg)before the start of and throughout the chemotherapy course.HBV reactivation was diagnosed when the HBsAg status changed from negative to positive after the initiation of chemotherapy and/or when HBV DNA was detected by realtime detection polymerase chain reaction(RTD-PCR).For detecting the serological markers of HBV infection,HBsAg as well as antibodies to the core antigen(antiHBc)and to the surface antigen were measured in the sera by CEIA.Nucleic acids were extracted from sera,and HBV DNA sequences spanning the S gene were amplified by RTD-PCR.The extracted DNA was further subjected to PCR to amplify the complete genome as well as the specific genomic sequences bearing the enhancerⅡ/core promoter/pre-core/core regions(nt1628-2364).Amplicons were sequenced directly.RESULTS:Thirty-five(66%)of the 53 HBsAg-negative patients were found to be negative serologically for antiHBc,and the remaining 18(34%)patients were positive for anti-HBc.Five of the 53(9.4%)patients with hematologic malignancies experienced HBV reactivation.Genotype D1 was detected in all five patients.Four types of mutant strains were detected in the S gene product of HBV strains and were isolated from 3 patients with HBV reactivation:T/S120,L143,and I126.HBV DNA was detected in the pretreatment HBsAg-negative samples in one of the five patients with HBV reactivation.In this patient,sequences encompassing the HBV full genome obtained from sera before the start of chemotherapy and at the time of de novo HBV hepatitis were detected and it showed 100%homology.Furthermore,in the phylogenetic tree,the sequences were clustered together,thereby indicating that this patient developed reactivation from an occult HBV infection.CONCLUSION:Past infection with HBV is a risk factor for HBV reactivation in Egypt.Mandatory anti-HBc screening prior to chemotherapy in patients with hematological malignancies is recommended. | Abeer Elkady Sahar Aboulfotuh Elsayed Mostafa Ali Douaa Sayed Nashwa M Abdel-Aziz Amany M Ali Shuko Murakami Sayuki Iijima Yasuhito Tanaka | 2013 | World Journal of Gastroenterology2013,19,37: | 7 |
| 5 | Predicting crest settlement in concrete face rockfill dams using adaptive neuro-fuzzy inference system and gene expression programming intelligent methods显示文摘This paper deals with the estimation of crest settlement in a concrete face rockfill dam (CFRD), utilizing intelligent methods. Following completion of dam construction, considerable movements of the crest and the body of the dam can develop during the first impoundment of the reservoir. Although there is vast experience worldwide in CFRD design and construction, few accurate experimental relationships are available to predict the settlement in CFRD. The goal is to advance the development of intelligent methods to estimate the subsidence of dams at the design stage. Due to dam zonification and uncertainties in material properties, these methods appear to be the appropriate choice. In this study, the crest settlement behavior of CFRDs is analyzed based on compiled data of 24 CFRDs constructed during recent years around the world, along with the utilization of gene expression programming (GEP) and adaptive neuro-fuzzy inference system (ANFIS) methods. In addition, dam height (H), shape factor (S f ), and time (t, time after first operation) are also assessed, being considered major factors in predicting the settlement behavior. From the relationships proposed, the values of R 2 for both equations of GEP (with and without constant) were 0.9603 and 0.9734, and for the three approaches of ANFIS (grid partitioning (GP), subtractive clustering method (SCM), and fuzzy c-means clustering (FCM)) were 0.9693, 0.8657, and 0.8848, respectively. The obtained results indicate that the overall behavior evaluated by this approach is consistent with the measured data of other CFRDs. | Danial BEHNIA Kaveh AHANGARI Ali NOORZAD Sayed Rahim MOEINOSSADAT | 2013 | Journal of Zhejiang University-Science A(Applied Physics & Engineering)2013,14,8: | 6 |
| 6 | Applications of endoscopic ultrasound in pancreatic cancer显示文摘Since the introduction of endoscopic ultrasound guided fine-needle aspiration(EUS-FNA),EUS has assumed a growing role in the diagnosis and management of pancreatic ductal adenocarcinoma(PDAC).The objective of this review is to discuss the various applications of EUS and EUS-FNA in PDAC.Initially,its use for detection,diagnosis and staging will be described.EUS and EUS-FNA are highly accurate modalities for detection and diagnosis of PDAC,this high accuracy,however,is decreased in specific situations particularly in the presence of chronic pancreatitis.Novel techniques such as contrast-enhanced EUS,elastography and analysis of DNA markers such as k-ras mutation analysis in FNA samples are in progress and might improve the accuracy of EUS in the detection of PDAC in this setting and will be addressed.EUS and EUS-FNA have recently evolved from a diagnostic to a therapeutic technique in the management of PDAC.Significant developments in therapeutic EUS have occurred including advances in celiac plexus interventions with direct injection of ganglia and improved pain control,EUS-guided fiducial and brachytherapy seed placement,fine-needle injection of intra-tumoral agents and advances in EUS-guided biliary drainage.The future role of EUS and EUS in management of PDAC is still emerging. | Leticia Perondi Luz Mohammad Ali Al-Haddad Michael Sai Lai Sey John M DeWitt | 2014 | World Journal of Gastroenterology2014,20,24: | 5 |
| 7 | New approaches for diagnosis of dry eye disease显示文摘We reviewed the literature for different diagnostic approaches for dry eye disease(DED) including the most recent advances, contradictions and promising diagnostic tools and technique. We performed a broad literature search for articles discussing different methods for diagnosis of DED including assessment of tear osmolarity, tear film stability, ocular biomarkers and others. Articles indexed in PubMed and google scholar were included. With the growing cosmetic industry, environmental pollution, and booming of digital screens, DED is becoming more prevalent. Its multifactorial etiology renders the diagnosis challenging and invites the emergence of new diagnostic tools and tests. Diagnostic tools can be classified, based on the parameter they measure, into tear film osmolarity, functional visual acuity, tear volume, tear turnover, tear film stability, tear film composition, ocular biomarkers and others. Although numerous methods exist, the most accurate diagnosis can be reached through combining the results of more than one test. Many reported tests have shown potential as diagnostic/screening tools, however, require more research to prove their diagnostic power, alone or in combination. Future research should focus on identifying and measuring parameters that are the most specific to DED diagnosis. | Abdelrahman MElhusseiny Ali AKhalil Reem HEl Sheikh Mohammad ABakr MohamedGaber Eissa Yasmine MEl Sayed | 2019 | International Journal of Ophthalmology(English edition)2019,12,10: | 5 |
| 8 | 类番茄茄抗番茄黄花曲叶病毒QTL的定位显示文摘采用田间自然接种番茄黄花曲叶病毒(TYLCV)的鉴定方法,对来自番茄野生种类番茄茄Solanum.lycopersicoides LA2951的渐渗系(Introgression Line,IL)群体进行了筛选,发现类番茄茄LA2951对TYLCV的抗性受多个位点控制。通过分析不同IL的抗性,共鉴定出7个QTL,分别位于染色体1、3、4、5、6、7和12上,其中位于染色体1上的QTL有待于进一步确定。 | 宗园园 刘磊 李涛 Sayed Rashad Ali Shah 周龙溪 孙玉燕 郑峥 郑启功 范淑英 李君明 | 2012 | 园艺学报2012,39,5: | 5 |
| 9 | 黑龙江省马铃薯叶斑类病害Alternaria属病原组成和分布显示文摘生产上常见的马铃薯叶斑类病害主要包括马铃薯早疫病、黑点病和黑斑病等,均导致马铃薯植株叶片枯死、严重时侵染块茎,造成减产。马铃薯早疫病、黑点病和黑斑病的病原分别为茄链格孢菌(Alternaria solani)、链格孢菌(Alternaria alternata)和细极链格孢菌(Alternaria tenuissima),是Alternaria属的三个不同种。本研究旨在针对Alternaria属这三个病原建立一套PCR快速分子鉴定技术,同时结合传统生物学鉴定方法,调查分析黑龙江省马铃薯叶斑类病害Alternaria属病原的小种组成和发生分布情况。结果表明:利用通用引物H3-1a/H3-1b对感染Alternaria病原菌的马铃薯植株病样进行PCR扩增,在489 bp、440 bp和546 bp处出现条带,经测序比对分析,三处目的条带分别鉴定为茄链格孢菌(Alternaria solani)、链格孢菌(Alternaria alternata)和细极链格孢菌(Alternaria tenuissima)。对2015年采集自黑龙江省马铃薯主产区的55个植株叶斑类病样进行生物学和PCR鉴定,结果显示大部分病样为Alternaria属多个小种混合侵染,主要是A.tenuissima、A.alternata和A.solani,这三种病原所占被测病样总数百分比分别为71%、45%和33%,A.tenuissima为优势小种。本研究结果将为准确检测马铃薯植株叶斑类病原菌提供技术支持,为生产上有的放矢防控马铃薯叶斑类病害提供帮助。 | 李雅南 Sayed Rashad Ali Shah 孙少慧 白艳菊 吕典秋 姜丽丽 闵凡祥 高云飞 马纪 王晓丹 金光辉 | 2017 | 分子植物育种2017,15,3: | 4 |
| 10 | Isogeometric analysis of free-form Timoshenko curved beams including the nonlinear effects of large deformations显示文摘In the present paper, the isogeometric analysis(IGA) of free-form planar curved beams is formulated based on the nonlinear Timoshenko beam theory to investigate the large deformation of beams with variable curvature. Based on the isoparametric concept, the shape functions of the field variables(displacement and rotation) in a finite element analysis are considered to be the same as the non-uniform rational basis spline(NURBS) basis functions defining the geometry. The validity of the presented formulation is tested in five case studies covering a wide range of engineering curved structures including from straight and constant curvature to variable curvature beams. The nonlinear deformation results obtained by the presented method are compared to well-established benchmark examples and also compared to the results of linear and nonlinear finite element analyses. As the nonlinear load-deflection behavior of Timoshenko beams is the main topic of this article, the results strongly show the applicability of the IGA method to the large deformation analysis of free-form curved beams. Finally, it is interesting to notice that, until very recently, the large deformations analysis of free-form Timoshenko curved beams has not been considered in IGA by researchers. | Seyed Farhad Hosseini Ali Hashemian Behnam Moetakef-Imani Saied Hadidimoud | 2018 | Acta Mechanica Sinica2018,34,4: | 4 |
| 11 | 番茄对晚疫病的株龄相关抗性及Ph-3的抗性机制显示文摘目前已明确番茄抗晚疫病R基因表现明显的株龄相关抗性(Age-related Resistance,ARR),但抗晚疫病QTL的抗性规律尚不明确。以携带抗晚疫病基因Ph-3的栽培种番茄(Solanum lycopersicum)‘CLN2037B’和野生种醋栗番茄(S.pimpinellifolium)‘L3708’以及易感病材料栽培种番茄(S.lycopersicum)‘LA2818’为对照,对含有抗晚疫病QTL的多毛番茄(S.habrochaites)‘LA2099’、‘LA1033’和‘LA1777’是否也存在株龄相关抗性进行了分析。结果表明,携带抗晚疫病QTL的3个材料的6叶期和9叶期植株病情级数均比3叶期明显降低,表明QTL抗性与株龄相关。利用乙烯、水杨酸和茉莉酸素合成或缺失的突变体和病毒诱导基因沉默(Virus Induced Gene Silencing,VIGS)技术,初步明确了乙烯和水杨酸参与6叶期Ph-3基因介导的对晚疫病的抗性,而茉莉酸不参与。 | 李涛 Sayed Rashad Ali Shah 刘磊 郑峥 杜永臣 李君明 | 2015 | 园艺学报2015,42,6: | 4 |
| 12 | Role of dietary phytochemicals in modulation of miRNA expression:Natural swords combating breast cancer显示文摘The National Cancer Institute had projected breast cancer(BC) as one of the topmost prevalent malignancies around the globe.In many cases,BC becomes resistant to chemotherapy,radiation and hormonal therapies.Traditional BC therapies are associated with adverse side effects,drug resistance and recurrence.Extensive research work has shown that these dietary phytochemicals(DPs) may exert therapeutic effects by regulating the miRNA expression.A large number of DPs have been researched as miRNA regulatory agents against BC and some other DPs have not yet been tested against BC.We have discussed the effects of curcumin,diallyl disulphide,3,3′ diindolylmethane,ellagic acid,genistein,indole-3-carbinol,quercetin,resveratrol,and sulforaphane on regulation of expression of BC miRNAs in a wide range of in vitro and in vivo models.We have also shown some of the possible DPs(Oleanolic acid,capsaicin,benzyl isothiocyanate,epigallocatechin gallate,phenethyl isothiocyanate and ursolic acid) that have shown miRNA regulatory activities and have not yet been tested against BC miRNAs.Finally,current limitations,challenges,future perspectives of DPs and BC research are also critically discussed. | Banzeer Ahsan Abbasi Javed Iqbal Tariq Mahmood Ali Talha Khalil Barkat Ali Sobia Kanwal Sayed Afzal Shah Riaz Ahmad | 2018 | Asian Pacific Journal of Tropical Medicine2018,11,9: | 3 |
| 13 | 碱蓬内生真菌曲霉TQ67次级代谢产物的研究显示文摘目的研究植物碱蓬内生真菌曲霉TQ67次级代谢产物。方法采用ODS反相柱色谱、高效液相色谱、半制备HPLC等方法对发酵液及菌丝体部分分离纯化,运用核磁、质谱等现代波谱分析方法对化合物进行结构鉴定。结果得到8个化合物:aspermutarubrol(1)、sydowiols D(2)、sydowiols E(3)、细交链孢酮酸(4)、(E)-5-(羟甲基)-2-(6'-甲基-2'-庚烯-2'-基)酚(5)、sydonol(6)、(7S)-(+)-7-O-methylsydonol(7)和hydroxysydonic acid(8)。化合物2/3和化合物1其DPPH的IC_(50)分别为(9.79±0.33)和(32.30±1.02)μg·mL^(-1),FRAP值分别为(230.55±2.50)和(278.99±8.32)μg·mL^(-1)。结论从碱蓬内生真菌曲霉TQ67中分离得到的化合物2/3和化合物1有较强的抗氧化活性。 | 吴斌 Sayed Asmat Ali Shah 陶倩楠 | 2018 | 中国药学杂志2018,53,7: | 3 |
| 14 | A review on zero energy buildings-Pros and cons显示文摘Enhancing the energy efficiency of structures has been a staple of energy policies.The key goal is to slash elec-tricity usage in order to minimize the footprint of houses.This goal is sought by putting restrictions on the design specifications with respect to the properties of the raw materials and components as well as the exploitation of sustainable sources of energy.These facts for the basis for zero-energy building(ZEB)being established.This novel technology has faced several obstacles impeding its commercialization and future advancement.This inves-tigation therefore holistically explored and evaluated the state of zero energy building and factors impeding their commercialization.The review further proposed some suggestion in terms of technology that can be considered by the sector to augment existing technologies.Similarly,the investigation touched on the effect of occupant’s character in zero energy structures.Policies in terms of government subsidies and tax rebates were recommended to encourage more investors into the sector.Finally,the perception of zero energy building being more expensive compared to the traditional structures can equally be curbed via efficient and effective public sensitization. | Tabbi Wilberforce A.G.Olabi Enas Taha Sayed Khaled Elsaid Hussein M.Maghrabie Mohammad Ali Abdelkareem | 2023 | Energy and Built Environment2023,4,1: | 3 |
| 15 | Predictions of future hydrological conditions and contribution of snow and ice melt in total discharge of Shigar River Basin in Central Karakoram,Pakistan显示文摘The high mountains of Hindu-Kush Karakoram and Himalaya(HKKH) contain a large volume of snow and ice, which are the primary sources of water for the entire mountainous population of HKKH. Thus, knowledge of these available resources is very important in relation to their sustainable use. A Modified Positive Degree Day Model was used to simulate daily discharge with the contribution of snow and ice melt from the Shigar River Basin, Central Karakoram, Pakistan. The basin covers an area of 6,921 km2 with an elevation range of 2,204 to 8,611 m a.s.l.. Forty percent of the total area is glaciated among which 20% is covered by debris and remaining 80% by clean ice and permanent snow. To simulate daily discharge, the entire basin was divided into 26 altitude belts. Remotely sensed land cover types are derived by classifying Landsat images of 2009. Daily temperature and precipitation from Skardu meteorological station is used to calibrate the glacio-hydrological model as an input variable after correlating data with the Shigar station data(r=0.88). Local temperature lapse rate of 0.0075 °C/m is used. 2 °C critical temperature is used to separate rain and snow from precipitation. The model is calibrated for 1988~1991 and validated for 1992~1997. The model shows a good Nash-Sutcliffe efficiency and volume difference in calibration(0.86% and 0.90%) and validation(0.78% and 6.85%). Contribution of snow and ice melt in discharge is 32.37% in calibration period and 33.01% is validation period. The model is also used to predict future hydrological regime up to 2099 by using CORDEX South Asia RCM considering RCP4.5 and RCP8.5 climate scenarios.Predicted future snow and ice melt contributions in both RCP4.5 and RCP8.5 are 36% and 37%, respectively. Temperature seems to be more sensitive as compared to other input variables, which is why the contribution of snow and ice in discharge varies significantly throughout the whole century. | Javed Hassan Rijan Bhakta Kayastha Ahuti Shrestha Iram Bano Sayed Hammad Ali Haleem Zaman Magsi | 2017 | Research in Cold and Arid Regions2017,9,6: | 3 |
| 16 | Functional evaluation of the filtering bleb by ultrasound biomicroscopy after trabeculectomy with mitomycin C显示文摘AIM: To study the role of ultrasound biomicroscopy(UBM) in the assessment of the bleb function after trabeculectomy with mitomycin C(MMC). METHODS: This was a cross-sectional study including all cases had undergone trabeculectomy with MMC 0.2 mg/mL for 3 min. Participants were recruited from the follow-up cases at Department of Ophthalmology, Tanta University in the period from August 2015 to August 2016. Full history taking and ophthalmological examination were performed. Intraocular pressure(IOP) was measured using Goldmann applanation tonometry and the history of prescribed postoperative antiglaucoma medications was recorded. Accordingly, the trabeculectomy blebs were divided clinically into successful blebs when the IOP post-operative was ≤18 mmHg without medications. Scanning examination of the filtering bleb using UBM examination was performed at the period from 2 to 36 mo after trabeculectomy(13.6±9.7 m o). RESULTS: This study included 33 trabeculectomy filtering blebs of 25 patients(9 males and 16 females). The mean age of patients was 53.2±14.2 y(range 25-71y). We had 20 eyes with complete success, 9 eyes with qualified success, and 4 eyes with failure after trabeculectomy with MMC. The blebs were classified into successful blebs(IOP ≤18 mmHg without antiglaucoma medications), others were classified into qualified successful and failed blebs. There was a significant correlation between certain UBM findings(intra-bleb reflectivity, draining sub-scleral tract, bleb height, and intrableb fluid cysts) and cases with different grades of clinical functional success(P<0.01).CONCLUSION: UBM is an objective tool in the functional assessment of the post-trabeculectomy filtering bleb through a significant correlation between certain UBM parameters and the different grades of clinical functional success. | Ali Abbas El Salhy Rabab Mohamed Elseht Ahmed Fekry AI Maria Saied Mohamed Abd El-wahab Shalaby Tarek Ragaee Hossein | 2018 | International Journal of Ophthalmology(English edition)2018,11,2: | 3 |
| 17 | Characteristics of escape mutations from occult hepatitis B virus infected patients with hematological malignancies in South Egypt显示文摘AIM To investigate the prevalence and virological characteristics of occult hepatitis B virus(HBV) infections in patients with hematological malignancies in South Egypt.METHODS Serum samples were collected from 165 patients with hematological malignancies to monitor titers of HBV DNA, hepatitis B surface antigen(HBs Ag), and antibodies to HBV core(anti-HBc) and surface antigens. Serum samples negative for HBs Ag and positive for anti-HBc were subjected to nucleic acid extraction and HBV DNA detection by real-time polymerase chain reaction. DNA sequences spanning the S region were analyzed in cases with occult HBV infection. In vitro comparative study of constructed 1.24-fold wild type and S protein mutant HBV genotype D clones was further performed. RESULTS HBV DNA was detected in 23(42.6%) of 54 patients with hematological malignancies who were HBsA g negative, but anti-HBc positive, suggesting the presence of occult HBV infection. The complete HBV genome was retrieved from 6 occult HBV patients, and P120 T and S143 L were detected in 3 and 2 cases, respectively. Site directed mutagenesis was done to produce 1.24-fold genotype D clones with amino acid mutations T120 and L143. The in vitro analyses revealed that a lower level of extracellular HBsA g was detected by chemiluminescence enzyme immunoassay(CLEIA) with the clone containing T120 mutation, compared with the wild type or the clone with S143 L mutation despite the similar levels of extracellular and intracellular HBs Ag detected by Western blot. Southern blot experiments showed that the levels of intracellular HBV DNA were not different between these clones. CONCLUSION Occult HBV infection is common in patients with hematological malignancies and associated with P120 T and S143 L mutations. 120 T mutation impairs the detection of HBsA g by CLEIA. | Abeer Elkady Sayuki Iijima Sahar Aboulfotuh Elsayed Mostafa Ali Douaa Sayed Nashwa M Abdel-Aziz Amany M Ali Shuko Murakami Masanori Isogawa Yasuhito Tanaka | 2017 | World Journal of Hepatology2017,9,9: | 2 |
| 18 | Leonurus sibiricus L.(honeyweed):A review of its phytochemistry and pharmacology显示文摘Leonurus sibiricus is a herbaceous plant found in many countries in Asia and America.This plant is widely practiced as a remedy for the treatment of diabetes,menstrual irregularities,and bronchitis.The approval of therapeutic implications of any drugs depends on the well characterized mode of actions of the compounds.The bioactive compounds like diterpenes,triterpenes,flavonoids and phenolic acids in Leonurus sibiricus show analgesic,anti-inflammatory,anti-oxidant,anti-atherogenic and antihemorrhagic,anti-diabetic,anti-bacterial and allelopathic potency.Interestingly,the expression level of some genes is altered by the crude extract treatments,which are effective against cancers,diabetes and cardiovascular diseases where the molecular mechanisms are yet to be explored.Intriguingly,the extracts significantly induce nitric oxide production by endothelial nitric oxide synthase,a signaling molecule of vasodilation in combination with interferon-y indicating positive effect on atherosclerosis.Further investigations are required to unlock the effects of bioactive compounds found in extracts at clinical settings. | Abu Sayed AshraM Alam Shariful Islam Taif Ali Emdad Ullah Abu Zaffar Shibly Aslam Ali Mahdi Hasan-Olive | 2016 | Asian Pacific Journal of Tropical Biomedicine2016,6,12: | 2 |
| 19 | Effect of Surface Treatment and Metallic Coating on Corrosion Behavior and Biocompatibility of Surgical 316L Stainless Steel Implant显示文摘Surface engineering technology is a suitable method for coatings on the metal surfaces or performing surface modification treatment,which can improve corrosion resistance and biocompatibility of metals.In this research,corrosion behavior of Nb coating on H 2 SO 4 and HNO 3 treated AISI stainless steel 316L (SS) was evaluated.Nb coating was carried out using physical vapor deposition process on the SS.Characterization techniques including scanning electron microscopy (SEM) and energy dispersive X-ray (EDX) technique were used to investigate the microstructure and morphology of the coated and treated SS.Electrochemical potentiodynamic tests were performed in two types of physiological solutions and compared with the pristine SS specimens.Cyclic polarization tests were performed to evaluate resistivity against pitting.Experimental results indicate that Nb coating and surface treatment of the SS had a positive effect on improvement of corrosion behavior.The decrease in corrosion current densities was significant for coated and treated specimens.The corrosion current density was much lower than the values obtained for pristine specimens. | Ali Parsapour Saied Nouri Khorasani Mohammad Hossein Fathi | 2012 | Journal of Materials Science & Technology2012,28,2: | 2 |
| 20 | PCSK9与脑胆固醇稳态及阿尔茨海默病的潜在关联显示文摘前蛋白转化酶枯草杆菌蛋白酶kexin9型(PCSK9)抑制剂在血脂管理中备受关注,而PCSK9与脑胆固醇稳态及阿尔茨海默病(AD)的潜在关联鲜为人知。研究显示脑胆固醇依赖原位合成且AD患者脑脊液中PCSK9水平升高,但PCSK9不能穿过血-脑屏障。该文将阐述PCSK9参与脑胆固醇稳态及AD的可能机制及作用靶点,并进一步探讨PCSK9抑制剂在心血管领域的应用是否对患者神经认知功能产生影响。 | 李媛 赵震宇 Md Sayed Ali Sheikh 胡涛 夏珂 | 2021 | 医药导报2021,40,6: | 2 |