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The epidemiology of microbial agents related to patients with multiple sclerosis (MS) 多发性硬化症(MS)患者相关微生物感染的流行病学研究
Pub Date : 2018-07-03 DOI: 10.22037/JPS.V9I3.20143
M. Navidinia, Khadijeh Gholinejad, S. Derakhshan, A. Rahimipour, F. Kazerouni, M. Sahraian
Multiple Sclerosis (MS) is one of the autoimmune diseases which affects the central nervous system and its etiology has not yet been identified. The disparity between youth and disability in reproductive ages is considered to be of particular importance for this disease and the need for research which illuminates various epidemiological, etiologic, clinical and therapeutic angles of multiple sclerosis is deeply felt. The purpose of this study is to consider the epidemiology of microbial agents related to patients with multiple sclerosis (MS). From 37 patients with multiple sclerosis according to the physician examination and McDonald criteria , serum samples were taken. Until testing, serum samples were stored in a freezer at -70 ° C. Subsequently, viral and bacterial agents were identified using specific primers and PCR method. In this study, the numbers of microbial agents were as the following: 7 retrovirus associated with MS (MRSV), 17 EBV, 8 HSV6, 11 JC virus, 10 CMV, 8 B19, 14 Corona virus, 1 Helicobacter pylori , 15 Acinetobacter , 9 Borrelia burgdorferi , and 19 Chlamydia pneumonia . Identification of the relationship between different infectious agents in MS is necessary to prepare feasible data about tracing and treatment of MS related to these microorganisms that may be beneficial to clinicians to select a convenient empirical therapeutic diet in MS related to pathogens at the bedhead and can open up a new path to new therapeutic approaches.
多发性硬化症(MS)是一种影响中枢神经系统的自身免疫性疾病,其病因尚未明确。青年和残疾在生育年龄之间的差异被认为对这种疾病特别重要,需要从流行病学、病因学、临床和治疗的各个角度来研究多发性硬化症。本研究的目的是考虑与多发性硬化症(MS)患者相关的微生物病原体的流行病学。对37例多发性硬化症患者按医师检查和McDonald标准进行血清采集。检测前,将血清样本保存在-70°c的冷冻室中。随后,使用特异性引物和PCR方法鉴定病毒和细菌病原体。本研究共检出MS相关逆转录病毒(MRSV) 7种,EBV 17种,HSV6 8种,JC病毒11种,CMV 10种,B19 8种,冠状病毒14种,幽门螺杆菌1种,不动杆菌15种,伯氏疏螺旋体9种,肺炎衣原体19种。确定MS中不同感染因子之间的关系,为这些微生物相关的MS的追踪和治疗准备可行的数据是必要的,这可能有利于临床医生选择方便的实验性治疗饮食,并为新的治疗方法开辟新的途径。
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引用次数: 0
Moral challenges of research on embryos in pre-implantation genetic diagnosis and IVF 胚胎植入前遗传学诊断和体外受精研究的道德挑战
Pub Date : 2018-05-27 DOI: 10.22037/JPS.V9I2.19136
L. Naseri, M. Abbasi, M. Hashemi
Purposes of pre-implantation genetic diagnosis (PGD) include screening for single gene mutations for late onset disorders or susceptibility to cancer. The problematic issue is that PGD is to produce a healthy baby, causing the destruction of some embryos that have been transferred by in vitro fertilization (IVF). Some PGD embryos may be discarded because they are excess to the woman or couples’ goal for family creation, and have been diagnosed as being affected by a particular genetic condition that woman/couple wish to avoid. So, the controversial issue is the destruction of embryos as a consequence of fertility treatment that raises questions on whether the moral status of an embryo of 3 days is the same as that of a born, living adult human being.
植入前遗传学诊断(PGD)的目的包括筛查晚发性疾病或癌症易感性的单基因突变。问题是,PGD是为了生出健康的婴儿,会破坏一些通过体外受精(IVF)移植的胚胎。一些PGD胚胎可能会被丢弃,因为它们对女性或夫妇的家庭创造目标来说是多余的,并且被诊断为受到女性/夫妇希望避免的特定遗传条件的影响。因此,有争议的问题是胚胎的破坏作为生育治疗的结果,这引发了一个问题,即3天胚胎的道德地位是否与出生的成年人的道德地位相同。
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引用次数: 0
Integrons and antimicrobial resistance in bacteria: A systematic review 整合子与细菌抗菌素耐药性:系统综述
Pub Date : 2018-05-27 DOI: 10.22037/JPS.V9I2.18726
A. Shariati, F. Sabzehali, M. Goudarzi, H. Azimi
Resistance to antimicrobial agents is on the rise  and this phenomenon not only leads to an increase in economic burden but may also cause serious therapeutic problems. Nowadays, it is known that horizontal transfer of resistance genes is a major cause for spreading antibiotic resistance genes in microbes. The previous studies have manifested that integrons play a significant role in horizontal transfer of antibiotic resistance. Integrons are in fact natural cloning and expression systems which have the ability to spread multi drug resistance (MDR) in bacteria. They are normally motionless but can be transferred through mobile genetic elements, for example plasmids and transposons. Integrons carry divergent gene cassettes that are rearranged under antibiotic selective pressure. It is based on the sequence of the integrase gene that various classes of integrons are known. Class 1 integron is the most prevalent type among bacteria. This review highlights the need for continuous surveillance to understand the dissemination of integron and multidrug resistance among different bacteria.
对抗微生物药物的耐药性正在上升,这一现象不仅导致经济负担的增加,而且还可能造成严重的治疗问题。目前,已知抗性基因的水平转移是微生物中抗生素抗性基因传播的主要原因。以往的研究表明,整合子在抗生素耐药性的水平转移中起着重要作用。整合子实际上是一种天然的克隆和表达系统,具有在细菌中传播多重耐药(MDR)的能力。它们通常是静止不动的,但可以通过可移动的遗传元件转移,例如质粒和转座子。整合子携带不同的基因盒,在抗生素选择压力下重新排列。它是基于整合酶基因的序列,各种类型的整合子是已知的。1类整合子是细菌中最普遍的类型。这篇综述强调了持续监测的必要性,以了解整合子的传播和不同细菌之间的多药耐药性。
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引用次数: 3
Development of Molecular Beacon method to detect of JAK2 V617F mutation 分子信标法检测JAK2 V617F突变的建立
Pub Date : 2018-05-27 DOI: 10.22037/JPS.V9I2.19323
A. Nazemi
V617F mutation of JAK2 gene is a point mutation of Somatic cells leading to permanent phosphorylation and protein kinase activity of the JAK2 protein. This mutation is a valuable marker in the diagnosis of myeloid neoplasms. Development of new techniques can be effective and highly sensitive for the detection of the mutation. The aim of this study is designing and executing a molecular beacon probe-based real-time PCR detect to V617F mutation. Test results were reviewed from a set of wild type and cloned JAK2 exon 12 mutated allele genes into plasmid vector and through amplification by Real-Time PCR system. The sensitivity and specificity of Molecular Beacon probes design were tested. The results showed that the Real-Time PCR system has %100 specificity and % 0.001 sensitivity. Based on the results obtained from the molecular beacon probe-based real-time PCR, it was proved that the system is able to detect normal and mutant alleles of JAK2 V617F position with high accuracy and a short time in a closed tube system
JAK2基因的V617F突变是体细胞中导致JAK2蛋白永久磷酸化和蛋白激酶活性的点突变。这种突变是诊断髓系肿瘤的一个有价值的标志。新技术的发展可以有效和高灵敏度地检测突变。本研究的目的是设计并实现基于分子信标探针的实时PCR检测V617F突变。将野生型和克隆的JAK2外显子12突变等位基因导入质粒载体,并通过Real-Time PCR系统进行扩增。测试了分子信标探针设计的灵敏度和特异性。结果表明,Real-Time PCR系统特异性为%100,灵敏度为% 0.001。基于分子信标探针的实时PCR结果证明,该系统能够在封闭管系统中以较高的准确性和较短的时间检测JAK2 V617F的正常和突变等位基因的位置
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引用次数: 0
Determinants of Households Health Expenditure : A Population-Based Study 家庭卫生支出的决定因素:一项基于人群的研究
Pub Date : 2018-05-08 DOI: 10.22037/JPS.V9I2.20356
Y. Mehrabi, A. Payandeh, Z. R. Ghahroodi, F. Zayeri
Studies have shown that the determinants of households’ health expenses are in doubt in Iran. Patients deal with pain and trouble while facing with increasing health services payments. Thus, their quality of life decreases in all aspects. The objective of this research lies on the analysis of Iranian households’ health expenditure (HHE) using multilevel modelling methodology. Data collected through Household Income and Expenditure Survey by Statistical Center of Iran. A total of 38299 Iranian households were sampled. This nationally-representative cross-sectional survey collected information from March 2013 to March 2014 using a three-staged cluster sampling method. Descriptive statistics and multilevel modelling employed for data analysis. Data analysis was performed using R programming language version 3.3.2 and SPSS version 20. P 0.05). More attention on HHE will be needed from researchers and politicians, as it has proved to be no easy matter in the low-income and deprived areas.
研究表明,伊朗家庭医疗费用的决定因素是不确定的。病人在处理痛苦和麻烦的同时,还要面对不断增加的医疗服务费用。因此,他们的生活质量在各个方面都下降了。本研究的目的在于利用多层次建模方法分析伊朗家庭的卫生支出。数据通过伊朗统计中心的家庭收入和支出调查收集。共对38299个伊朗家庭进行了抽样调查。这项具有全国代表性的横断面调查收集了2013年3月至2014年3月的信息,采用三阶段整群抽样方法。采用描述性统计和多层次模型进行数据分析。数据分析采用R 3.3.2版本编程语言和SPSS 20版本进行。P 0.05)。科学家和政治家需要更多地关注HHE,因为事实证明,在低收入和贫困地区,这不是一件容易的事情。
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引用次数: 1
The compliance of Iranian library and information science journals with Thomson Reuters’ basic standards 伊朗图书馆和信息科学期刊符合汤森路透的基本标准
Pub Date : 2018-05-08 DOI: 10.22037/JPS.V9I2.18697
Saeideh Valizadeh-Haghi, Ronak Hamzehei
Presently, journals are considered as the most important tools of information science and knowledge growth throughout the world. Due to the increase in the number of scientific journals, the selection, evaluation and determination of the authenticity of these resources by the authorized organizations has attached more significance to them. Thus, the present study aims at investigating the compliance of Iranian library and information science journals with basic standards of journal evaluation through Thomson Reuters’ viewpoint. This is an applied research, which has been conducted through comparative analysis. It evaluates the authenticity of scientific journals through four basic standards of  Thomson Reuters, namely on-time publishing of journals, observing international publishing laws, full-text in English, and peer review. The population of the research includes all the active scientific Iranian journals in the field of library and information sciences (12 journals). Results showed that the mean of correlation ratio between the studied journals and standards was 75%. On-time publishing and full-text in English were observed only in 33% and 58% of the studied journals respectively. However, observing international laws of publishing and peer review are in optimal status. Studies are needed in order to find out the compliance of the other countries’ library science journals with international standards,  (specially developing ones) to help those countries to identify the existing gaps which will assist them to present their researches in the international level through being indexed in authentic databases. Obviously more research is needed in this area, as Thomson Reuters has published standards other than the basic standards.
目前,期刊被认为是世界范围内信息科学和知识增长最重要的工具。由于科技期刊数量的增加,授权机构对这些资源的甄选、评估和真伪判定更加具有重要意义。因此,本研究旨在透过汤森路透的观点,探讨伊朗图书馆情报学期刊是否符合期刊评价的基本标准。这是一项应用研究,通过比较分析的方式进行。它通过汤森路透的四项基本标准,即期刊准时出版、遵守国际出版法、英文全文和同行评议,来评估科学期刊的真实性。研究对象包括伊朗图书馆和信息科学领域所有活跃的科学期刊(12种期刊)。结果表明,所研究期刊与标准的平均相关率为75%。在被研究的期刊中,分别只有33%和58%的期刊出现了准时发表和英文全文。而遵守国际出版法规和同行评议则处于最佳状态。需要研究其他国家图书馆学期刊与国际标准(特别是发展中国家)的符合情况,以帮助这些国家发现存在的差距,从而帮助他们通过在真实的数据库中被索引来展示他们的研究。显然,在这方面还需要进行更多的研究,因为汤森路透已经发布了除基本标准之外的其他标准。
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引用次数: 0
Effect of WiFi waves (2.45 GHz) on aminotransaminases(ALP, ALT and AST) in liver of rat WiFi波(2.45 GHz)对大鼠肝脏转氨酶(ALP、ALT和AST)的影响
Pub Date : 2018-05-07 DOI: 10.22037/JPS.V9I2.19283
M. Pooladi, Alireza Montzeri, N. Nazarian, Bita Taghizadeh, Mohsen Odoumizadeh
Different disorders and diseases are associated with liver thus liver enzymes are commonly evaluated. Amino transaminases are among the most important enzymes in the liver, which their serum levels can indicate liver’s health or abnormality. Environmental stimuli including electromagnetic field affect different cells and organs in the body including the liver. WiFi networks are among the most common inducers of electromagnetic field. In the present study, serum levels of three liver aminotransaminases including Alkaline phosphatase (ALP), Aspartate aminotransferase (AST) and Alanine aminotransferase (ALT) are assessed and histopathological evaluations are performed for four weeks in six groups of mice following WiFi 2.45GHz exposure. Then, we have analyzed the data ( t -test and one-way ANOVA; P <0.05). Our results show that amino transaminase levels are changed following WiFi 2.45GHz exposure compared to control group and that these changes are increased with time. Respectively, AST, ALT and ALP levels showed 11.38%, 18.63%, and 4.85% increase on average, during these four weeks of the experiment. ALT and AST sustain more changes compared to the ALP in the liver. Electromagnetic induction is related to AST, ALP and ALT catabolism. The WiFi exposure time is an important factor that affects the maximum amount of absorbed electromagnetic energy in a specific period.
不同的紊乱和疾病与肝脏有关,因此肝酶通常被评估。氨基转氨酶是肝脏中最重要的酶之一,其血清水平可以反映肝脏的健康或异常。包括电磁场在内的环境刺激会影响身体的不同细胞和器官,包括肝脏。WiFi网络是最常见的电磁场诱导器之一。本研究对6组小鼠在WiFi 2.45GHz暴露后4周的血清碱性磷酸酶(ALP)、天冬氨酸转氨酶(AST)和丙氨酸转氨酶(ALT) 3种肝脏转氨酶水平进行了检测和组织病理学评价。然后,我们对数据进行了分析(t检验和单因素方差分析;P < 0.05)。我们的研究结果表明,与对照组相比,暴露于WiFi 2.45GHz后,氨基转氨酶水平发生了变化,并且这些变化随着时间的推移而增加。4周内AST、ALT、ALP水平分别平均升高11.38%、18.63%、4.85%。ALT和AST在肝脏中的变化比ALP更大。电磁感应与AST、ALP和ALT的分解代谢有关。WiFi暴露时间是影响特定时间段内电磁能量最大吸收量的重要因素。
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引用次数: 4
Direct electron transfer of laccase enzyme based on RGO/AuNPs/PNR 基于RGO/AuNPs/PNR的漆酶直接电子转移研究
Pub Date : 2018-03-13 DOI: 10.22037/JPS.V9I2.19409
Fariba Mashayekhi, M. Alijanianzadeh, A. M. Rad, P. Heydari
Biofuel cell has been received much attention in recent years because the global energy demand increases every year. This paper presents a design of Mytheliophthora thermophile laccase on the electrode as a biocathode for biofuel cells based on direct electron transfer (DET) between the active site of the enzyme and reduced graphene oxide-gold nanoparticles-poly neutral red (RGO/AuNPs/PNR). The RGO/AuNPs/PNR/laccase biocathode was characterized by cyclic voltammetry (CV) method. The CV experiments demonstrated the activity, direct electron transfer, and stability of immobilized enzyme on the nanocomposite. The results showed the immobilized enzyme had good stability and performance on the nanocomposite after 10 days. Therefore, the presented method would be used in the design of biosensors or biocathode of biofuel cells.
近年来,由于全球能源需求的逐年增长,生物燃料电池受到了广泛的关注。本文提出了一种基于酶活性位点与还原氧化石墨烯-金纳米颗粒-聚中性红(RGO/AuNPs/PNR)之间直接电子转移(DET)的电极上的Mytheliophthora嗜热性漆酶作为生物燃料电池的生物阴极的设计。采用循环伏安法(CV)对RGO/AuNPs/PNR/漆酶生物阴极进行了表征。CV实验证明了固定化酶在纳米复合材料上的活性、直接电子转移和稳定性。结果表明,固定化酶在纳米复合材料上具有良好的稳定性和性能。因此,该方法可用于生物燃料电池的生物传感器或生物阴极的设计。
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引用次数: 0
Radiolabeling and Bio-distribution study of ICD-85 with Technetium-99m as a cancer treatment agent in mice 含锝-99m抗癌剂ICD-85在小鼠体内的放射性标记和生物分布研究
Pub Date : 2018-03-13 DOI: 10.22037/JPS.V9I2.18792
S. Shirmardi, M. Erfani, A. Zare, H. Mirzaei, M. Mola
ICD-85 is a combination of three poly-peptides, ranging from 10,000 to 30,000 Dalton, derived from the venoms of an Iranian brown snake (Agkistrodon halys) and a yellow scorpion (Hemiscorpius lepturus) . Labeling of this ICD-85 was successfully achieved with 99m Tc, through direct method using SnF 2 as reducing agent. Labeled ICD-85 was injected into mice to determine the excretion pathway. The results show that the maximum labeling yield (>75%) was obtained by using 30 μg of ICD-85 in phosphate buffer (60 μl, pH 7.1) at room temperature. Bio-distribution studies with radiolabeled ICD-85 shows moderate clearance of the complex from blood. The improvement of the immunotherapeutic treatment of cancer requires a better knowledge of the biological actions of the ICD-85 since tissue distribution studies are very important for clinical purpose.
ICD-85是三种多肽的组合,从1万到3万道尔顿不等,来自伊朗棕蛇(Agkistrodon halys)和黄蝎子(Hemiscorpius lepturus)的毒液。采用SnF 2作为还原剂的直接方法,用99m Tc成功地标记了该ICD-85。将标记的ICD-85注射到小鼠体内,以确定其排泄途径。结果表明,室温条件下,在磷酸缓冲液(60 μl, pH 7.1)中加入30 μg的ICD-85,标记率最高(>75%)。放射标记ICD-85的生物分布研究显示该复合物从血液中有中度清除。由于组织分布研究对临床非常重要,因此提高癌症的免疫治疗需要更好地了解ICD-85的生物学作用。
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引用次数: 0
Assessment of correlation between urinary secretary IgA (sIgA) levels and different types of urinary tract infection (UTI) in various age groups 不同年龄组尿路感染(UTI)与尿秘书IgA (sIgA)水平的相关性评估
Pub Date : 2018-02-26 DOI: 10.22037/jps.v9i1.16481
M. Navidinia, A. Teymouri, M. Goudarzi
Urinary tract infections (UTIs) currently rank among the most prevalent infectious diseases worldwide, with chronic and recurrent infections being especially problematic. Urinary secretory IgA (sIgA) in mucosal surface is an important immunological defense in preventing bacterial adherence to periurethral epithelia and uroepithelial. This is a thematic review describing and focusing on a central element which is  taken into consideration from different point of views .So, the present study  surveyed a brief consideration of assessment correlation between urinary sIgA levels and urinary tract infection (UTI) in various age groups. In children with anatomic abnormalities, higher rates of sIgA was seen compared to children without anatomic abnormalities. The interesting point was that children with recurrent UTI with normal urinary tract had lower levels of sIgA compared to the control group. Also, no remarkable difference of the sIgA concentration rate was seen in healthy and rUTI children who had no bacteriuria; yet, it was considerably higher in children with bacteriuria. It was proven that locally synthesized sIgA was low in patients’ urine with recurrent UTI, independent of the presence or absence of bacteriuria. UTI did not interfere with sIgA secretion as shown by high sIgA in patients with upper UTI. Low urinary sIgA may illustrate one factor predisposing to recurrent UTI. The outcomes displayed that the existence of sIgA is associated with the UTI in children as well as in adults; however, sIgA showed to be manipulative to the infective agent and can also be applied to recognize infection type. Therefore, evaluation of urine antibody levels can provide another marker of host responses to infection, which can be used either as a simple screening test or could be beneficial to facilitate along with other experiments in establishing an assessment.
尿路感染(uti)目前是世界上最普遍的传染病之一,慢性和复发性感染尤其成问题。尿粘膜表面分泌的IgA (sIgA)是防止细菌粘附于尿道周围上皮和尿上皮的重要免疫防御。这是一篇专题综述,描述并关注从不同角度考虑的中心因素。因此,本研究调查了不同年龄组尿sIgA水平与尿路感染(UTI)之间的评估相关性的简要考虑。在有解剖异常的儿童中,sIgA的发生率高于无解剖异常的儿童。有趣的是,与对照组相比,尿路正常的复发性尿路感染儿童的sIgA水平较低。无菌尿的健康儿童和rUTI儿童sIgA浓度率无显著差异;然而,在患有细菌尿症的儿童中,这一比例要高得多。证实复发性尿路感染患者尿液中局部合成sIgA较低,与有无菌尿无关。尿路感染不影响sIgA的分泌,上尿路感染患者的sIgA水平较高。低尿sIgA可能是导致尿路感染复发的一个因素。结果显示sIgA的存在与儿童和成人的尿路感染有关;然而,sIgA对感染因子具有操控性,也可用于识别感染类型。因此,尿液抗体水平的评估可以提供宿主对感染反应的另一种标记,既可以用作简单的筛选试验,也可以与其他实验一起有助于建立评估。
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引用次数: 1
期刊
Journal of paramedical sciences
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