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Undiagnosed Brucellosis in Psychiatric Patients: A Cross-Sectional Study 精神病患者中未确诊布鲁氏菌病的横断面研究
IF 1.4 Q2 Medicine Pub Date : 2023-06-27 DOI: 10.5812/archcid-136729
Sasan Moogahi, H. Rostami, S. Salmanzadeh, M. Cheraghi, Fateme Tadi beni
Background: Brucellosis, also known as malt fever, poses significant health and economic challenges across various regions worldwide, particularly in Mediterranean and Middle Eastern countries. Objectives: This study aimed to identify cases of undiagnosed brucellosis among psychiatric patients. Methods: This descriptive cross-sectional study was conducted at Golestan Hospital in Ahvaz, Khozestan Province, Iran. The study aimed to investigate cases of undiagnosed brucellosis among psychiatric patients during the first six months of 2021. The diagnosis of brucellosis relied on standard tests, namely the Wright test, the Coombs-Wright test, and the two-mercaptoethanol test, which are widely recognized as reference techniques. In the endemic region of Iran, a positive titer of at least 1: 80 in the Wright test and titers of at least 1: 40 in the two-mercaptoethanol test are considered diagnostic criteria. The Coombs-Wright test is deemed positive when the titer is three dilutions higher than the Wright test titer in symptomatic patients. Results: A total of 225 patients admitted to psychiatric wards with psychiatric disorders underwent examination for brucellosis. The study revealed an undiagnosed brucellosis prevalence of 7.6% (n = 17). None of these patients had a recent or prior history of brucellosis, nor had they received any treatment for the disease. Among the seventeen patients, three reported experiencing typical and commonly observed symptoms of brucellosis, such as myalgia and arthralgia, during the clinical interviews. However, the remaining fourteen patients did not display any clinical symptoms typically associated with brucellosis, including myalgia, arthralgia, fever, and sweating. Instead, they solely exhibited psychiatric symptoms alongside their condition. Conclusions: Based on the findings, it can be deduced that among the 225 patients diagnosed with psychiatric disorders, 14 individuals were identified as having brucellosis. Remarkably, these patients did not exhibit the characteristic symptoms typically associated with brucellosis. Instead, their manifestation of brucellosis presented solely as psychiatric symptoms.
背景:布鲁氏菌病,也称为麦芽热,在世界各地,特别是地中海和中东国家,对健康和经济构成了重大挑战。目的:本研究旨在确定精神病患者中未确诊的布鲁氏菌病病例。方法:这项描述性横断面研究在伊朗霍齐斯坦省阿瓦兹的Golestan医院进行。该研究旨在调查2021年前六个月精神病患者中未确诊的布鲁氏菌病病例。布鲁氏菌病的诊断依赖于标准测试,即Wright测试、Coombs-Wright测试和二巯基乙醇测试,这些测试被广泛认为是参考技术。在伊朗流行地区,Wright试验的阳性滴度至少为1:80,二巯基乙醇试验的滴度至少为1:40被视为诊断标准。当有症状的患者的滴度比Wright试验的滴度高出三倍稀释度时,Coombs-Wright试验被视为阳性。结果:共有225名精神病患者接受了布鲁氏菌病检查。研究显示,未确诊的布鲁氏菌病患病率为7.6%(n=17)。这些患者都没有布鲁氏菌病的近期或既往史,也没有接受过任何治疗。在17名患者中,有3人报告在临床访谈中出现了典型和常见的布鲁氏菌病症状,如肌痛和关节痛。然而,其余14名患者没有表现出任何典型的布鲁氏菌病临床症状,包括肌痛、关节痛、发烧和出汗。相反,他们只表现出精神症状和病情。结论:根据这些发现,可以推断,在225名被诊断为精神疾病的患者中,有14人被确定患有布鲁氏菌病。值得注意的是,这些患者没有表现出典型的布鲁氏菌病相关的特征性症状。相反,他们的布鲁氏菌病表现仅仅是精神症状。
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引用次数: 0
Molecular Analysis of Fosfomycin Resistance Among Escherichia coli Isolates From Urinary Tract Infections in Kidney Transplant Patients During 2019 - 2020 2019 - 2020年肾移植患者尿路感染大肠埃希菌对磷霉素耐药性的分子分析
IF 1.4 Q2 Medicine Pub Date : 2023-06-26 DOI: 10.5812/archcid-132120
Atefeh Najafikhah, M. Hakemi-Vala, S. Samavat, M. Nasiri
Background: This study aimed to estimate the prevalence of fosfomycin resistance and the frequency of extended-spectrum beta-lactamase (ESBL) production in Escherichia coli isolates from three kidney transplant patients (KTPs) in Tehran. Methods: Sixty clinical isolates of uropathogenic E. coli were collected from three kidney transplant centers in Tehran between April and May 2019. Antimicrobial susceptibility testing (AST), minimum inhibitory concentration (MIC) of fosfomycin, and screening for ESBL production were conducted following the protocols established by the Clinical and Laboratory Standards Institute (CLSI). The presence of the blaTEM, blaSHV, blaCTX-M, fosA3, and fosC2 genes was evaluated using polymerase chain reaction (PCR) and sequencing. Additionally, mutations in the murA, glpT, uhpT, and cya genes were assessed. The activity of the carbohydrate phosphate transporter was measured using the real-time PCR assay. Results: According to the AST results, ampicillin showed the highest resistance rate (86%), while ertapenem and doripenem exhibited complete susceptibility (100%). According to the E-test, 1.6% of E. coli isolates were resistant to fosfomycin. Furthermore, 33.4% of E. coli isolates in KTPs were ESBL producers, with the most frequent occurrence of the blaTEM gene (55%). Additionally, mutations were identified in the murA, uhpT, and glpT genes of resistant samples. No plasmid genes for fosA3 and fosC2 were detected. The expression of the uhpT gene increased 32-fold in a susceptible isolate, as determined by qPCR. Conclusions: The high resistance of E. coli isolates from urinary tract infections (UTIs) of KTPs to β-lactam antibiotics remains a significant clinical challenge. However, no correlation was found between ESBL production and resistance to fosfomycin. The resistance rate to fosfomycin was low, and the primary cause of resistance was mutations in chromosomal genes.
背景:本研究旨在评估德黑兰三名肾移植患者(KTP)的大肠杆菌分离株中磷霉素耐药性的患病率和超广谱β-内酰胺酶(ESBL)产生的频率。方法:2019年4月至5月,从德黑兰的三个肾移植中心收集了60株尿路致病性大肠杆菌临床分离株。根据临床和实验室标准研究所(CLSI)制定的方案进行了抗微生物药敏试验(AST)、磷霉素的最低抑制浓度(MIC)和ESBL生产筛选。使用聚合酶链式反应(PCR)和测序来评估blaTEM、blaSHV、blaCTX-M、fosA3和fosC2基因的存在。此外,还评估了murA、glpT、uhpT和cya基因的突变。使用实时PCR测定法测量碳水化合物-磷酸盐转运蛋白的活性。结果:AST结果显示,氨苄青霉素耐药率最高(86%),厄他培南和多里培烯完全耐药(100%)。根据E检验,1.6%的大肠杆菌分离株对磷霉素具有耐药性。此外,KTP中33.4%的大肠杆菌分离株是ESBL产生者,其中blaTEM基因最常见(55%)。此外,在抗性样品的murA、uhpT和glpT基因中也发现了突变。未检测到fosA3和fosC2的质粒基因。通过qPCR测定,在易感分离株中,uhpT基因的表达增加了32倍。结论:KTPs尿路感染(UTIs)的大肠杆菌分离株对β-内酰胺类抗生素的高耐药性仍然是一个重大的临床挑战。然而,ESBL的产生与磷霉素耐药性之间没有发现相关性。对磷霉素的抗性率较低,抗性的主要原因是染色体基因突变。
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引用次数: 0
Evaluation of β-lactamases and Molecular Typing of Pseudomonas aeruginosa Clinical Strains Isolated from Hospitalized Children in Tehran 德黑兰住院儿童铜绿假单胞菌临床菌株的β-内酰胺酶和分子分型评价
IF 1.4 Q2 Medicine Pub Date : 2023-06-20 DOI: 10.5812/archcid-134837
H. Goudarzi, N. Bostanghadiri, Zahra Riahi Rad, Zohreh Riahi Rad, Javad Yasbolaghi Sharahi
Background: The opportunistic human pathogen, Pseudomonas aeruginosa, is a critical cause of nosocomial infection with high morbidity and mortality rate. Eradication of P. aeruginosa has been troublesome due to its high capacity to develop strong multidrug resistance (MDR). Objectives: The purposes of this study were to define the pattern of antimicrobial sensitivity, typing, and prevalence of metallo-β-lactamase (MBL) and detect the oprD, blaCTX-M, blaSHV, blaTEM, blaIMP, blaNDM, and blaVIM among clinical isolates of P. aeruginosa collected from Tehran hospitals. Methods: Clinical isolates were collected from hospitalized children in selected hospitals in Tehran from March 2019 to February 2020. The antimicrobial susceptibility test (AST) was performed by the Kirby-Bauer disk diffusion method. Composed disc diffusion tests were performed to screen MBL production. MBLs and extended-spectrum β-lactamases (ESBL) encoding genes were amplified by polymerase chain reaction (PCR). Amplification of the oprD gene were performed for carbapenem-resistant P. aeruginosa. Random amplified polymorphic DNA (RAPD-PCR) Fingerprinting was used for genotyping the isolates. Results: A total of 80 P. aeruginosa isolates were collected. Isolates were resistant to cefepime 35%, ceftazidime 20%, ciprofloxacin 22%, tazobactam 16%. Out of 80 isolates, 16 were carbapenems-resistant. Gentamicin, tobramycin, and amikacin had the highest susceptibilities of 85%,90%, and 90%, respectively. OprD, blaCTX-M, blaSHV, and blaTEM were detected in 80(100%), 36(45%),22 (27.5%), 17 (21.25%), and 1 (1.25%) blaIMP and blaNDM, respectively. In this study, the blaVIM gene was not detected in the isolates, and no mutation was observed regarding the presence of an insertion element in the OprD gene. Isolates were divided into 13 and 14 common and single types, respectively. Conclusions: P. aeruginosa isolates showed a high rate of β- lactamases production, and the prevalence of carbapenem-resistant, which can be related to different mechanisms, was alarming. On the other hand, the results demonstrated that there was beta-lactam antibiotic resistance and clonal spread among the hospital population. This shows the necessity of molecular surveillance in tracking beta-lactamase-producing strains.
背景:人类机会性病原体铜绿假单胞菌是医院感染的重要原因,发病率和死亡率较高。铜绿假单胞菌的根除一直很麻烦,因为它具有产生强多药耐药性(MDR)的高能力。目的:本研究的目的是确定金属β-内酰胺酶(MBL)的抗菌敏感性、分型和流行模式,并检测从德黑兰医院收集的铜绿假单胞菌临床分离株中的oprD、blaCTX-M、blaSHV、blaTEM、blaIMP、blaNDM和blaVIM。方法:从2019年3月至2020年2月德黑兰选定医院的住院儿童中收集临床分离株。采用Kirby-Bauer纸片扩散法进行抗微生物药敏试验(AST)。进行复合圆盘扩散试验以筛选MBL的产生。用聚合酶链式反应(PCR)扩增MBL和超广谱β-内酰胺酶(ESBL)编码基因。对碳青霉烯耐药的铜绿假单胞菌进行了oprD基因的扩增。采用随机扩增多态性DNA(RAPD-PCR)指纹图谱对分离株进行基因分型。结果:共收集到80株铜绿假单胞菌。分离株对头孢吡肟的耐药性为35%,对头孢他啶的耐药性为20%,对环丙沙星的耐药性为22%,对他唑巴坦的耐药性为16%。在80个分离株中,有16个具有碳青霉烯类耐药性。庆大霉素、妥布霉素和阿米卡星的敏感性最高,分别为85%、90%和90%。在80个(100%)、36个(45%)、22个(27.5%)、17个(21.25%)和1个(1.25%)blaIMP和blaNDM中分别检测到OprD、blaCTX-M、blaSHV和blaTEM。在这项研究中,在分离株中没有检测到blaVIM基因,也没有观察到关于OprD基因中插入元件存在的突变。分离株分别分为13种和14种常见型和单一型。结论:铜绿假单胞菌表现出较高的β-内酰胺酶产生率,碳青霉烯耐药性的发生率令人担忧,这可能与不同的机制有关。另一方面,结果表明医院人群中存在β-内酰胺类抗生素耐药性和克隆传播。这表明分子监测在追踪产β-内酰胺酶菌株方面的必要性。
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引用次数: 0
Is it Necessary to Continue Wearing the Mask in a Medical Setting After COVID-19? 新冠肺炎后有必要在医疗环境中继续戴口罩吗?
IF 1.4 Q2 Medicine Pub Date : 2023-06-16 DOI: 10.5812/archcid-138022
M. Mardani
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引用次数: 0
Increasing Levels of Macrophage Migration Inhibitory Factor (MIF) in COVID-19 Infection and Its Pathophysiological Role; Though a Defined Cut-off Value Might Be Clinically Misleading 巨噬细胞迁移抑制因子(MIF)在新冠肺炎感染中的升高及其病理生理作用;尽管定义的截止值可能在临床上是错误的
IF 1.4 Q2 Medicine Pub Date : 2023-06-14 DOI: 10.5812/archcid-133714
Faramarz Farzad, N. Yaghoubi, Farnaz Zahedi Avval, Majid khadem-Rezaiyan, Farahzad Jabbari Azad, M. Youssefi
Background: The serious outbreak of coronavirus disease 2019 (COVID-19) has provoked deep concern throughout the world. The pathophysiologic network leading to severe conditions has still unsolved gaps. Considered a pleiotropic, multifaceted cytokine, macrophage migration inhibitory factor (MIF) has distinct functions, which seem to stand at the edge of distinct known mechanisms involving in COVID-19 pathogenesis. Additionally, MIF is a key mediator of acute respiratory distress syndrome and lung injury. Objectives: The current study aimed to evaluate the serum levels of MIF in COVID-19 patients, particularly in severe cases. Methods: This case control study was performed on the sera of 60 randomly selected COVID-19 patients as case group and 30 randomly selected healthy individuals as control group during November 2020 till April 2021 at Mashhad University of Medical Sciences. The case group included 30 outpatients with mild disease and 30 hospitalized severe subjects. A commercial enzyme-linked immunosorbent assay was utilized to measure serum MIF. Data were analyzed using SPSS version 16 with student t-test and chi-squared test considering a P < 0.05 as statistical significance level. Results: There was no statistical difference between two groups regarding demographic variables. According to the obtained data, significantly higher MIF levels were observed in the affected subjects than the healthy individuals, particularly in severe COVID-19 subjects (severe: 65.31 ± 6.2 ng/mL, mild: 40.45 ± 6.6 ng/mL, healthy: 20.63 ± 6.1 ng/mL P < 0.0001). The receiver operating characteristic (ROC curve) drawn for the present study illustrates that MIF amounts differentiate COVID-19 severe and mild cases with high accuracy (90.8%) (sensitivity:86.6%, specificity:96.6%). Conclusions: There might be an association between MIF concentration with respiratory failure and disease exacerbation due to COVID-19 infection. Therefore, MIF can act as a marker of clinical severity for COVID 19 infection. However, due to variations in MIF amounts a definite cut-off value might be specific to the study and should be considered with caution. MIF is supposed to be one of the most important cytokines in COVID-19 pathogenesis and might be a target for therapeutic approaches with MIF inhibitors in possible upcoming disease peaks.
背景:2019冠状病毒病(新冠肺炎)的严重爆发引起了全世界的深切关注。导致严重疾病的病理生理网络仍然存在尚未解决的空白。巨噬细胞迁移抑制因子(MIF)被认为是一种多效性、多方面的细胞因子,具有不同的功能,似乎处于新冠肺炎发病机制的边缘。此外,MIF是急性呼吸窘迫综合征和肺损伤的关键介质。目的:本研究旨在评估新冠肺炎患者,特别是重症患者的血清MIF水平。方法:本病例对照研究于2020年11月至2021年4月在马什哈德医学科学大学随机选择60名新冠肺炎患者作为病例组,30名健康人作为对照组进行。病例组包括30名门诊轻症患者和30名住院重症患者。采用商业酶联免疫吸附法测定血清MIF。数据使用SPSS 16版进行分析,采用学生t检验和卡方检验,将P<0.05作为统计学显著性水平。结果:两组在人口统计学变量方面没有统计学差异。根据所获得的数据,在受影响的受试者中观察到的MIF水平明显高于健康个体,特别是在严重新冠肺炎受试者中(严重:65.31±6.2 ng/mL,轻度:40.45±6.6 ng/mL,健康:20.63±6.1 ng/mL,P<0.0001)。本研究绘制的受试者操作特征(ROC曲线)表明,MIF量以高准确度(90.8%)区分新冠肺炎重度和轻度病例(敏感性:86.6%,特异性:96.6%)MIF浓度与呼吸衰竭和新冠肺炎感染引起的疾病恶化之间的关系。因此,MIF可以作为COVID-19感染的临床严重程度的标志物。然而,由于MIF数量的变化,明确的截止值可能是研究的具体值,应谨慎考虑。MIF被认为是新冠肺炎发病机制中最重要的细胞因子之一,并可能成为MIF抑制剂治疗即将到来的疾病高峰的靶点。
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引用次数: 0
Q Fever in Individuals in the Eurasian Continent: A 50-Year Literature Review (1973 - 2022) 欧亚大陆个体Q热:50年文献回顾(1973 - 2022)
IF 1.4 Q2 Medicine Pub Date : 2023-06-11 DOI: 10.5812/archcid-136333
Meruyert Bayakhmetova, G. Abuova, Yerkin Begalievich Bukharbayev, Timur Nurzhanovich Ablyazimov, K. Kamytbekova, Saltanat Baimbetova
: Q fever is a naturally occurring zoonotic disease with a zoonotic range covering all continents of the globe. The reservoirs and vectors of Coxiella burnetii are ixodid ticks and their hosts. This disease is characterized by a variety of mechanisms and routes in humans and animals (e.g., vector-borne, foodborne, airborne, and dust-borne). The disease often runs in the form of a fever. This article will review the incidence of human Q fever on the Eurasian continent over the past 50 years. Because Q fever is one of the unobserved infectious diseases, the occurrence of Q fever in humans in most countries is impossible to evaluate. Since this literature review is the primary resource for tracking scientific trends and research findings on the subject, the main goal of this study has focused on estimating the index of the incidence of Q fever infection among humans and compiling a 50-year literature review from August 1973 to July 2022. This study investigated the articles published in PubMed, Scopus, CyberLink, Web of Science, and Google Scholar by reviewing the scientific literature and official systematic reviews. The data were obtained using the keywords “Q fever AND prevalence/incidence” and “Q fever AND epidemiology.” The incidence of Q fever varies considerably from country to country due to epidemiological differences and whether the disease is detectable or not. Depending on the location of the country, endemics or outbreaks occur. At the Third World Health Forum in 1950, the possible danger of Q fever to human health was realized, and decisions were made stimulating research into the global prevalence of the causative agent of the disease. Since then, numerous epidemiological studies have shown that Q fever occurs almost everywhere worldwide except in Antarctica and New Zealand. This review’s available literature and ongoing epidemiological investigations in many countries show that Q fever needs to be regarded as a global community health issue. However, in the case of Kazakhstan, there is currently no information on the incidence of infection in humans and farm animals that requires further research on the incidence of Q fever, especially in coronavirus disease 2019.
:Q热是一种自然发生的人畜共患疾病,其人畜共患病范围遍及全球各大洲。本氏Coxiella burnetii的宿主和媒介是异蜱及其宿主。这种疾病在人类和动物中具有多种机制和途径(例如,媒介传播、食源性、空气传播和灰尘传播)。这种病经常以发烧的形式传播。本文将回顾过去50年来欧亚大陆人类Q热的发病率。由于Q热是一种未被观察到的传染病,因此在大多数国家,Q热在人类中的发生率无法评估。由于本文献综述是追踪该主题的科学趋势和研究结果的主要来源,本研究的主要目标是估计人类Q热感染的发病率指数,并编制1973年8月至2022年7月的50年文献综述。本研究通过查阅科学文献和官方系统综述,调查了发表在PubMed、Scopus、CyberLink、Web of Science和Google Scholar上的文章。这些数据是使用关键词“Q热和流行率/发病率”和“Q热与流行病学”获得的。由于流行病学差异以及疾病是否可检测,Q热的发病率在各国之间差异很大。根据国家的地理位置,会发生地方病或疫情。在1950年的第三届世界卫生论坛上,人们意识到Q热可能对人类健康造成的危险,并做出了一些决定,刺激了对该疾病病原体全球流行率的研究。从那时起,大量流行病学研究表明,除了南极洲和新西兰,Q热几乎在世界各地都有发生。这篇综述的现有文献和许多国家正在进行的流行病学调查表明,Q热需要被视为一个全球社区健康问题。然而,就哈萨克斯坦而言,目前没有关于人类和农场动物感染率的信息,需要对Q热的发病率进行进一步研究,特别是在2019冠状病毒病中。
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引用次数: 0
Genetically Diverse, Extremely Resistant, and Pan-drug Resistant Pseudomonas aeruginosa as the Main Cause of Nosocomial Infection Among Hospitalized Patients 遗传多样性、极耐药和泛耐药铜绿假单胞菌是住院患者院内感染的主要原因
IF 1.4 Q2 Medicine Pub Date : 2023-06-05 DOI: 10.5812/archcid-136338
M. Boustanshenas, B. Bakhshi, P. Mobasseri, Parisa Kiani, Farideh Hajiyan Hossein Abadi, Elahe Seyfi, A. Majidpour, Tahereh Mousavi Shabestari
Background: Clinical strains of Pseudomonas aeruginosa possess a wide diversity of antibiotic resistance and genetic characteristics. Objectives: This study aimed to determine the antibiotic susceptibility patterns and genotypes of P. aeruginosa isolated from patients with nosocomial infections. Methods: We tested 149 samples for P. aeruginosa isolation, confirmed by PCR. The Multi, Extensively, and Pan-drug resistant strains were detected through CLSI guidelines. All isolates were subjected to ERIC-PCR genotyping using specific primers. The antibiotic patterns and ERIC types were analyzed statistically using specific software. Results: Seventy-six (51%) isolates were confirmed as P. aeruginosa. Among them, 86.8% were determined as MDR, 81.5% as XDR, and 5.3% as PDR. Eight E-types were detected, which belonged to two main clusters with a similarity rate of over 70%. Cluster B, composed of E-types G and H, was a dominant cluster. Interestingly all of these cluster members were isolated from the internal ICU, and we can claim that at least two different colons had been colonized in the internal ICU. Moreover, four PDR strains were detected in this study, three of which possessed E-type G, and the remaining belonged to E-type H. Conclusions: Some unique E-types were dominant in ICUs with high diversity in antibiotic resistance patterns, which can be assumed as causative agents for nosocomial infection. The main threat here is regarding the PDR strains. They could be considered nosocomial pathogens and should be deliberated as a critical threat in an emerging hospital outbreak.
背景:铜绿假单胞菌临床菌株具有广泛的抗生素耐药性和遗传特征。目的:本研究旨在确定医院感染患者铜绿假单胞菌的药敏模式和基因型。方法:对149份样品进行了铜绿假单胞菌的分离检测。根据CLSI指南检测多重、广泛和泛耐药菌株。所有分离株均采用特定引物进行ERIC-PCR基因分型。应用专用软件对抗生素类型和ERIC类型进行统计分析。结果:经鉴定为铜绿假单胞菌76株(51%)。其中MDR占86.8%,XDR占81.5%,PDR占5.3%。共检出8个e型,隶属于2个主要聚类,相似率均在70%以上。聚类B由e型、G型和H型组成,为优势聚类。有趣的是,所有这些集群成员都是从内部ICU中分离出来的,我们可以说至少有两个不同的冒号在内部ICU中被定植。此外,本研究共检出4株PDR菌株,其中3株为e型G,其余为e型h。结论:icu中存在一些独特的e型优势,耐药模式多样性高,可认为其是院内感染的病原。这里的主要威胁是关于PDR菌株。它们可被视为院内病原体,应作为新出现的医院疫情的严重威胁加以考虑。
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引用次数: 0
Molecular Characteristics of Staphylococcus aureus Strains to Carry Panton-Valentine Leukocidin Genes Isolated from Hospitalized Patients in Tehran, Iran 从伊朗德黑兰住院患者中分离的携带Panton Valentine白细胞介素基因的金黄色葡萄球菌菌株的分子特征
IF 1.4 Q2 Medicine Pub Date : 2023-05-28 DOI: 10.5812/archcid-135699
Chakameh Amini, M. Fazeli, M. Nasiri, S. Bahonar, M. Dadashi, M. Haghighi, M. Miri, M. Goudarzi
Background: Staphylococcus aureus with concurrent resistance to antibacterial agents is emerging globally. This emergence might be due to the production of different virulence determinants, notably Panton-Valentine leukocidin (PVL). Objectives: This study aimed to investigate the genetic characteristics of PVL-positive S. aureus strains isolates from clinical samples. Methods: An epidemiological study was conducted on 65 S. aureus isolates carrying pvl genes. An antibiogram test by the disk diffusion and broth microdilution methods was conducted to assess antimicrobial resistance profiles. Results: All detected methicillin-resistant S. aureus (MRSA) isolates were confirmed by mecA polymerase chain reaction (PCR) assays. The PVL-positive isolates were characterized using multiplex PCR assay to detect staphylococcal cassette chromosome mec (SCCmec) and agr types. The PVL frequency was 19.5% and 17.6% in MRSA and methicillin-susceptible S. aureus (MSSA), respectively. Among the PVL-positive isolates, 66.2% and 33.8% were MRSA and MSSA, respectively. Multidrug resistance amounted to 84.6% of the isolates (MRSA: 61.5%, MSSA: 23.1%). Staphylococcal cassette chromosome mec III was dominated (55.8%; 24/43). The most commonly identified agr was type III (53.8%; 35/65). Resistance to vancomycin amounted to 12.3% of the isolates, and all belonged to agr type III and SCCmec type III. The frequency of inducible and constitutive clindamycin resistance among PVL-positive MRSA strains (12.3% and 26.1%) was higher than PVL-positive MSSA strains (7.7% and 15.4%). Most constitutive and inducible clindamycin resistance isolates belonged to agr type III (26.2% and 18.5%) and SCCmec type III (each 27.9%). In the present study, 32.3% of the isolates were confirmed as mupirocin resistant, and all were MRSA, 9 (42.9%) and 12 (57.1%) isolates of which exhibited high-level mupirocin resistant (HLMUPR) and low-level mupirocin resistant phenotypes. All HLMUPR MRSA isolates belonged to SCCmec III and recovered from wound samples. Conclusions: The emergence of vancomycin-resistant S. aureus strains among PVL-positive S. aureus strains in Iran is a serious alarm and seems to be becoming the greatest concern in the treatment of staphylococcal infections in the healthcare setting. The present study reinforces plausible direct transfers between community and nosocomial PVL-positive S. aureus types.
背景:同时对抗菌药物产生耐药性的金黄色葡萄球菌正在全球范围内出现。这种出现可能是由于产生了不同的毒力决定因素,特别是潘顿-瓦伦丁白细胞调素(PVL)。目的:本研究旨在研究临床样本中PVL阳性金黄色葡萄球菌分离株的遗传特征。方法:对65株携带pvl基因的金黄色葡萄球菌进行流行病学研究。采用纸片扩散法和肉汤微量稀释法进行抗微生物图谱测试,以评估抗微生物耐药性。结果:所有检测到的耐甲氧西林金黄色葡萄球菌均经mecA聚合酶链式反应(PCR)证实。采用多重聚合酶链式反应检测葡萄球菌盒染色体mec(SCCmec)和agr型,对PVL阳性分离株进行了鉴定。耐甲氧西林金黄色葡萄球菌和甲氧西林敏感金黄色葡萄菌的PVL发生率分别为19.5%和17.6%。在PVL阳性菌株中,MRSA和MSSA分别占66.2%和33.8%。多药耐药率达84.6%(MRSA:61.5%,MSSA:23.1%),以葡萄球菌盒式染色体mecⅢ型为主(55.8%;24/43)。最常见的agr是III型(53.8%;35/65)。对万古霉素的耐药性为12.3%,均属于agrⅢ型和SCCmecⅢ型。PVL阳性MRSA菌株中诱导型和诱导型克林霉素耐药性的频率(12.3%和26.1%)高于PVL阳性MSSA菌株(7.7%和15.4%)。大多数组成型和诱导性克林霉素耐药性菌株属于agr III型(26.2%和18.5%)和SCCmec III型(各27.9%),32.3%的分离株被证实对莫匹罗星具有耐药性,均为MRSA,其中9株(42.9%)和12株(57.1%)分离株表现出高水平的莫匹罗星耐药性(HLMUPR)和低水平的莫莫匹罗素耐药性表型。所有HLMUPR MRSA分离株均属于SCCmec III,并从伤口样本中回收。结论:在伊朗PVL阳性金黄色葡萄球菌菌株中出现耐万古霉素的金黄色葡萄菌菌株是一个严重的警报,似乎正在成为医疗机构治疗葡萄球菌感染的最大关注点。本研究强化了社区和医院PVL阳性金黄色葡萄球菌类型之间的合理直接转移。
{"title":"Molecular Characteristics of Staphylococcus aureus Strains to Carry Panton-Valentine Leukocidin Genes Isolated from Hospitalized Patients in Tehran, Iran","authors":"Chakameh Amini, M. Fazeli, M. Nasiri, S. Bahonar, M. Dadashi, M. Haghighi, M. Miri, M. Goudarzi","doi":"10.5812/archcid-135699","DOIUrl":"https://doi.org/10.5812/archcid-135699","url":null,"abstract":"Background: Staphylococcus aureus with concurrent resistance to antibacterial agents is emerging globally. This emergence might be due to the production of different virulence determinants, notably Panton-Valentine leukocidin (PVL). Objectives: This study aimed to investigate the genetic characteristics of PVL-positive S. aureus strains isolates from clinical samples. Methods: An epidemiological study was conducted on 65 S. aureus isolates carrying pvl genes. An antibiogram test by the disk diffusion and broth microdilution methods was conducted to assess antimicrobial resistance profiles. Results: All detected methicillin-resistant S. aureus (MRSA) isolates were confirmed by mecA polymerase chain reaction (PCR) assays. The PVL-positive isolates were characterized using multiplex PCR assay to detect staphylococcal cassette chromosome mec (SCCmec) and agr types. The PVL frequency was 19.5% and 17.6% in MRSA and methicillin-susceptible S. aureus (MSSA), respectively. Among the PVL-positive isolates, 66.2% and 33.8% were MRSA and MSSA, respectively. Multidrug resistance amounted to 84.6% of the isolates (MRSA: 61.5%, MSSA: 23.1%). Staphylococcal cassette chromosome mec III was dominated (55.8%; 24/43). The most commonly identified agr was type III (53.8%; 35/65). Resistance to vancomycin amounted to 12.3% of the isolates, and all belonged to agr type III and SCCmec type III. The frequency of inducible and constitutive clindamycin resistance among PVL-positive MRSA strains (12.3% and 26.1%) was higher than PVL-positive MSSA strains (7.7% and 15.4%). Most constitutive and inducible clindamycin resistance isolates belonged to agr type III (26.2% and 18.5%) and SCCmec type III (each 27.9%). In the present study, 32.3% of the isolates were confirmed as mupirocin resistant, and all were MRSA, 9 (42.9%) and 12 (57.1%) isolates of which exhibited high-level mupirocin resistant (HLMUPR) and low-level mupirocin resistant phenotypes. All HLMUPR MRSA isolates belonged to SCCmec III and recovered from wound samples. Conclusions: The emergence of vancomycin-resistant S. aureus strains among PVL-positive S. aureus strains in Iran is a serious alarm and seems to be becoming the greatest concern in the treatment of staphylococcal infections in the healthcare setting. The present study reinforces plausible direct transfers between community and nosocomial PVL-positive S. aureus types.","PeriodicalId":51793,"journal":{"name":"Archives of Clinical Infectious Diseases","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2023-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47967802","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Remdesevir Antiviral Therapy in Pregnant Women with COVID-19 瑞德西韦抗病毒治疗COVID-19孕妇
IF 1.4 Q2 Medicine Pub Date : 2023-05-17 DOI: 10.5812/archcid-132803
G. Shaimerdenova, G. Abuova, Serikbayeva Saltanat, Saltanat Baimbetova, Atabay Aidana
Background: Coronavirus disease 2019 (COVID-19) is difficult to treat in pregnant women due to pregnancy itself and the lack of standard treatment for the disease. As of August 2021, the etiotropic drug remdesivir has been added to the prescription list for women during gestation. There are few publications in the global scientific community regarding the use of this antiviral drug in pregnant women. Moreover, there are only sporadic scientific studies in Kazakhstan, so the question remains open. Objectives: This study aimed to evaluate the efficacy of remdesivir in pregnant women with probable or confirmed COVID-19. Methods: The study comprehensively examined 120 pregnant women with severe to very severe COVID-19, who were divided into two groups of patients. The study group consisted of women who received remdesivir and standard therapy. The control group included patients who received standard therapy per the protocol. Results: Statistically significant age differences were observed between the main and control groups (P = 0.019). The differences detected were due to a higher frequency in the age group of 33 and 42 years in patients taking remdesivir than in the control group (P = 0.036). Women in the main group (Median = 9.00; Q1 - Q3 = 8.00 - 11.0) had longer hospital stays than the control group (Me = 8.00; Q1 - Q3 = 7.00 - 10.0). This was due to the more severe condition of the patients in this group. There were statistically significant differences in amniotic fluid changes according to ultrasound between the control and main groups (P = 0.013). When comparing the groups in pairs, amniotic fluid was more common in women who received remdesivir (P = 0.316) than in the control group. Our study found that a decrease in temperature to normal levels occurred earlier in the control group (68%) than in the main group. Further SpO2 increases of more than 95% were seen on days 3 - 4 in the main group (71%) and days 1 - 2 in the control group (43%). After three days, there was an improvement in respiratory rate (41.6%) and a reduction in subjective dyspnea (66.6%) in the main group. Conclusions: The study found that repeat mothers have a more severe course of COVID-19. The older age group and the third trimester of pregnancy are risk factors for progression to severe disease.
背景:2019冠状病毒病(COVID-19)由于妊娠本身和缺乏标准治疗方法,在孕妇中难以治疗。截至2021年8月,致病因药物remdesivir已被添加到妊娠期妇女的处方清单中。全球科学界关于孕妇使用这种抗病毒药物的出版物很少。此外,在哈萨克斯坦只有零星的科学研究,因此这个问题仍然悬而未决。目的:本研究旨在评估瑞德西韦对可能或确诊的COVID-19孕妇的疗效。方法:对120例重度至极重度新冠肺炎孕妇进行综合检查,将其分为两组。研究组由接受瑞德西韦和标准治疗的妇女组成。对照组包括按照方案接受标准治疗的患者。结果:两组患者年龄差异有统计学意义(P = 0.019)。检测到的差异是由于服用瑞德西韦的患者在33岁和42岁年龄组中的频率高于对照组(P = 0.036)。主组女性(中位数= 9.00;Q1 - Q3 = 8.00 - 11.0)的住院时间比对照组长(Me = 8.00;Q1 - q3 = 7.00 - 10.0)。这是由于该组患者的病情更为严重。超声检查羊水变化与对照组比较,差异有统计学意义(P = 0.013)。当对两组进行比较时,接受瑞德西韦治疗的妇女羊水比对照组更常见(P = 0.316)。我们的研究发现,对照组体温降至正常水平的时间比主组早(68%)。在第3 - 4天,主组(71%)和对照组(43%)的SpO2进一步升高95%以上。3天后,主组呼吸频率改善(41.6%),主观呼吸困难减少(66.6%)。结论:研究发现,重复母亲的COVID-19病程更严重。年龄较大的年龄组和妊娠晚期是发展为严重疾病的危险因素。
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引用次数: 0
Adipose-derived Stem Cells Improving Inflammatory and Proliferative Responses in an Infected and Ischemic Ulcer Model in Type 1 Diabetic Rats: Insights Into Bacterial Count, Stereological Parameters, microRNA-21, and FGF2 Regulation 脂肪来源的干细胞改善1型糖尿病大鼠感染和缺血性溃疡模型中的炎症和增殖反应:对细菌计数、立体参数、微小RNA-21和FGF2调节的见解
IF 1.4 Q2 Medicine Pub Date : 2023-05-13 DOI: 10.5812/archcid-135078
A. Amini, Melika Farzin, Masoumeh Hajihossein, M. Bayat
Background: Adipose-derived stem cells (ADSCs) have been shown to enhance wound healing in rats with type 1 diabetes (DM1). Objectives: This experimental study aimed to explore how ADSC administration affects bacterial count, wound size, biomechanical and stereological parameters, and the expression of microRNA-21 and FGF2 in a rat model of infected, ischemic, and delayed wound healing in DM1. Methods: Twenty-four male adult Wistar rats weighing less than 250 g were randomly assigned to four groups (n = 6 per group). Type 1 diabetes was induced in all animals, resulting in the development of a delayed, ischemic, and infected wound model. The CGday4 and CGday8 groups served as controls. In the AGday4 group, the animals received allograft h-ADSs and were euthanized on day four after surgery. Similarly, in the AGday8 group, the animals received h-ADSs and were euthanized on day eight after surgery. Microbial colony counts, wound size, stereological parameters, and the expression of microRNA-21 and FGF2 were evaluated in this study during the inflammation (day 4) and proliferation (day 8) stages of wound healing. Results: We demonstrated that h-ADSs significantly reduced microbiological counts compared to the control group on days 4 and 8. Moreover, in the AGday8 group compared to the AGday4 group, this decline in microbiological counts was even more pronounced. Moreover, we observed that the stereological characteristics in the AGday4 and AGday8 groups were significantly superior to those in the CG groups. Additionally, the AGday4 and AGday8 groups exhibited smaller ulcer area sizes compared to the CG groups. Furthermore, the AGday4 and AGday8 groups demonstrated higher expression levels of FGF2 and microRNA-21 than the CG groups on days 4 and 8. Notably, on day 8, the AGday8 group’s outcomes surpassed those of the AGday4 group (P < 0.01). Conclusions: Through lowering microbial counts, modifying stereological parameters, microRNA-21, and FGF2 expression, the administration of hADS dramatically speeds up the healing of MARS-infected and ischemic ulcers in DM1 rats.
背景:脂肪源性干细胞(ADSCs)已被证明可以促进1型糖尿病(DM1)大鼠的伤口愈合。目的:本实验研究旨在探讨ADSC对DM1感染、缺血和延迟伤口愈合大鼠模型中细菌数量、伤口大小、生物力学和体视学参数以及microRNA-21和FGF2表达的影响。方法:取24只体重≤250 g的成年雄性Wistar大鼠,随机分为4组,每组6只。在所有动物中诱导1型糖尿病,导致延迟,缺血和感染伤口模型的发展。CGday4和CGday8组作为对照组。在AGday4组,动物接受同种异体h- ads移植,并在手术后第4天安乐死。同样,在AGday8组中,动物接受h- ads并在手术后第8天安乐死。在伤口愈合的炎症(第4天)和增殖(第8天)阶段,本研究评估了微生物菌落计数、伤口大小、体视学参数以及microRNA-21和FGF2的表达。结果:我们证明,与对照组相比,h- ads在第4天和第8天显著降低了微生物计数。此外,与AGday4组相比,AGday8组微生物数量的下降更为明显。此外,我们观察到AGday4和AGday8组的体视特性明显优于CG组。此外,与CG组相比,AGday4和AGday8组溃疡面积较小。此外,AGday4和AGday8组在第4天和第8天FGF2和microRNA-21的表达水平高于CG组。值得注意的是,在第8天,AGday8组的结果优于AGday4组(P < 0.01)。结论:通过降低微生物数量、改变体参数、microRNA-21和FGF2表达,hADS可显著加快DM1大鼠感染mars和缺血性溃疡的愈合。
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引用次数: 0
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Archives of Clinical Infectious Diseases
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