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Molecular characterization of multidrug-resistant Escherichia coli isolated from human urine infections with their antibiogram profile 从人尿感染中分离的多重耐药大肠杆菌的分子特征及其抗生素谱
Q3 Biochemistry, Genetics and Molecular Biology Pub Date : 2023-01-01 DOI: 10.5455/jabet.2023.d116
M. Haque, M. Islam, M. Miah, Sunny Das, S. Sarker
Urinary tract infections (UTIs) are the leading cause of hospitalization due to bacterial infection, and the frequency of multidrug-resistant Escherichia coli isolates from these infections is increasing worldwide. The current study aims to isolate and characterize antibiotic-resistant Escherichia coli and their antibiogram typing from urine samples of humans. From April to December 2019, a total of 60 human urine samples were collected aseptically and treated to primary isolation by propagation in nutrient broth followed by culture on various agar media. Gram’s staining, string techniques, biochemical characterization, PCR, and Sanger sequencing were performed to confirm E. coli. The Kirby-Bauer disk diffusion technique was used to test the susceptibility of all bacterial strains to thirteen typically prescribed antibiotics. The overall prevalence of E. coli in UTIs was 66.67%. Three variations were noted in E. coli, all of which were single substitutions (A>T, C>T, and T>A). Phylogenetic analysis of the 16S rRNA revealed that the E. coli discovered in this study belonged to the genus Escherichia, but was distinct from those identified in other countries. The antibiograms revealed that all the isolates (100%) were resistant to penicillin, ampicillin, and amoxicillin; 94.87% to doxycycline; 79.16% to gentamycin; 75.48% to ciprofloxacin; 73.07% to erythromycin; 71.66% to levofloxacin; 47.36% to ceftriaxone; and 46.66% to tetracycline. In contrast, all E. coli strains were sensitive to amikacin (95%), vancomycin (92.50%), and azithromycin (92.50%). People with a urinary tract infection (UTI) often have multidrug-resistant E. coli in their urine samples, which calls for a one-health strategy to deal with this rapidly changing condition.
尿路感染(uti)是细菌感染导致住院的主要原因,从这些感染中分离出的多重耐药大肠杆菌的频率在世界范围内正在增加。目前的研究旨在从人类尿液样本中分离和表征耐抗生素大肠杆菌及其抗生素谱分型。2019年4月至12月,无菌收集60份人尿液样本,通过营养肉汤繁殖进行初级分离,然后在各种琼脂培养基上培养。革兰氏染色、串法、生化鉴定、PCR和Sanger测序证实大肠杆菌。采用Kirby-Bauer圆盘扩散技术检测所有菌株对13种典型处方抗生素的敏感性。尿路感染中大肠杆菌的总感染率为66.67%。在大肠杆菌中发现了三种变异,它们都是单次替换(A >0t, C bb1t和T bb2a)。16S rRNA的系统发育分析表明,本研究中发现的大肠杆菌属于埃希氏菌属,但与其他国家发现的大肠杆菌不同。抗生素谱显示所有分离株(100%)对青霉素、氨苄西林和阿莫西林耐药;强力霉素占94.87%;庆大霉素占79.16%;环丙沙星占75.48%;红霉素占73.07%;左氧氟沙星占71.66%;头孢曲松占47.36%;46.66%是四环素。大肠杆菌对阿米卡星(95%)、万古霉素(92.50%)和阿奇霉素(92.50%)均敏感。尿路感染(UTI)患者的尿液样本中往往含有耐多药大肠杆菌,这就要求采取一种单一健康策略来应对这种迅速变化的疾病。
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引用次数: 0
Knowledge and attitude towards genetically modified foods: A quantitative cross-sectional study among the educated subjects in the four largest divisions of Bangladesh 对转基因食品的知识和态度:孟加拉国四个最大地区受教育对象的定量横断面研究
Q3 Biochemistry, Genetics and Molecular Biology Pub Date : 2023-01-01 DOI: 10.5455/jabet.2023.d118
Anindya Das, A. Sumit
The food consumers and stakeholders of Bangladesh have limited knowledge and perception over genetically modified (GM) foods. As no studies have been done regarding this among the Bangladeshi educated people on a large scale, hence this study aims to determine the level of knowledge and attitude regarding GM foods; and to explore the related factors as well. A cross-sectional survey was done with a close-ended questionnaire in the four largest divisions of Bangladesh where respondents were above 18 years of age and completed at least higher secondary level education. It was observed that among the total 614 respondents, 24.8% had no acquaintance with GM food. Of the remaining 462 respondents, 41.8% had better knowledge and 30.7% had positive attitude. The level of knowledge significantly varied with respondents’ gender, occupation, monthly income, educational status, and discipline studied where male, pharmaceutical workers, respondents with monthly income of 50001-100000 BDT, science studied respondents had significantly better knowledge than their counterparts. Similarly, respondents’ attitude on GMOs significantly differed with gender, occupation, monthly income and education in which positive attitude were shown by respondents with better knowledge. Finally, logistic regression analysis showed that female and business studied respondents had significantly less likely to have better knowledge and positive attitude than reference group, while respondents with monthly income between 50001-100000 BDT had more likely to have better knowledge and positive attitude, and NGO workers had more likely to have positive attitude than references. Thus, this study will help the policymakers of Bangladesh to perceive the current scenario of public demands on GM foods.
孟加拉国的食品消费者和利益相关者对转基因食品的知识和认知有限。由于没有对孟加拉国受过教育的人进行过大规模的研究,因此本研究旨在确定对转基因食品的知识水平和态度;并对相关因素进行了探讨。在孟加拉国四个最大的地区进行了一项横断面调查,使用封闭式问卷,受访者年龄在18岁以上,至少完成了高中教育。调查发现,在614名受访者中,24.8%的人不认识基因改造食物。在余下的462名受访者中,41.8%的人表示认识较好,30.7%的人持积极态度。调查对象的知识水平在性别、职业、月收入、文化程度和学科方面存在显著差异,其中男性、药学工作者、月收入在50001-100000 BDT的调查对象、科学研究的调查对象的知识水平显著高于其同行。同样,受访者对转基因生物的态度在性别、职业、月收入和教育程度上也存在显著差异,其中知识水平越高的受访者对转基因生物持积极态度。最后,logistic回归分析显示,女性和商业研究对象的知识水平和积极态度显著低于参照组,月收入在50001-100000 BDT之间的受访者的知识水平和积极态度显著高于参照组,非政府组织工作人员的积极态度显著高于参照组。因此,这项研究将帮助孟加拉国的决策者了解公众对转基因食品需求的现状。
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引用次数: 0
Effect of piper Crocatum leaves extract on atherosclerosis in diabetic rats 藏红花叶提取物对糖尿病大鼠动脉粥样硬化的影响
Q3 Biochemistry, Genetics and Molecular Biology Pub Date : 2023-01-01 DOI: 10.5455/jabet.2023.d123
Muhammad Adiansyah, Endang Mahati, F. Mundhofir, Nani Maharani, Y. Nindita, H. Istiadi
Atherosclerosis is caused by an inflammatory process in the endothelium due to an imbalance between oxidant and antioxidant agents that often occurs in Diabetes mellitus (DM) patients. Antioxidants that function to neutralize superoxide can be used to prevent atherosclerosis in DM. Piper crocatum leaves shows an unknown antioxidant effect on the atherosclerosis process.The aim of this study is to determine the effect Piper crocatum leaves extract on blood MDA levels and the severity of atherosclerosis in diabetic rats. 30 Sprague Dawley rats were randomly divided into 6 groups, namely, HC (nondiabetic), NC (diabetic-no therapy), PC (metformin 45 mg/kg), PC200, PC300, PC400 (Piper crocatum leaves extract 200/300/ 400 mg/kg/day). Termination, blood sampling, and histopathological analysis were performed after 14 days of treatment. MDA was measured using the TBARS method, and read on a 532 nm wavelength UV-vis spectrophotometer. The severity of atherosclerosis of the rat carotid artery was observed from tissue stained with Haematoxylin Eosin staining at 400x microscope magnification. The mean blood MDA levels in the PC200, PC300, PC400 groups were 1.24 ± 0.26, 0.85 ± 0.35, 0.10 and ± 0.02, respectively, and a decrease in MDA levels was found in the PC200, PC300, and PC400 compared to group NC. The study showed a decrease in the severity of atherosclerosis in groups PC200, PC300, PC400 compared to groups NC. Piper crocatum leaves extract had an effect on decreasing MDA levels and severity of atherosclerosis in diabetic rats.
动脉粥样硬化是由内皮细胞炎症过程引起的,这是由于氧化剂和抗氧化剂之间的不平衡引起的,这种情况经常发生在糖尿病(DM)患者中。具有中和超氧化物功能的抗氧化剂可用于预防糖尿病动脉粥样硬化。风笛草叶对动脉粥样硬化过程显示出未知的抗氧化作用。本研究旨在探讨虎笛叶提取物对糖尿病大鼠血MDA水平及动脉粥样硬化严重程度的影响。将30只Sprague Dawley大鼠随机分为6组,即HC(非糖尿病组)、NC(糖尿病-未治疗组)、PC(二甲双胍45 mg/kg组)、PC200、PC300、PC400(虎耳叶提取物200/300/ 400 mg/kg/d组)。治疗14天后进行终止治疗、抽血和组织病理学分析。采用TBARS法测定MDA,并在532 nm波长紫外-可见分光光度计上读取。在400倍显微镜下,用红木精伊红染色观察大鼠颈动脉粥样硬化的严重程度。PC200、PC300、PC400组血MDA均值分别为1.24±0.26、0.85±0.35、0.10、±0.02,PC200、PC300、PC400组MDA均较NC组降低。研究显示,与NC组相比,PC200、PC300、PC400组的动脉粥样硬化严重程度有所降低。虎笛叶提取物具有降低糖尿病大鼠动脉粥样硬化严重程度和丙二醛水平的作用。
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引用次数: 0
Association of the changes in hepatic enzymes, bilirubin, and plasma proteins with beta-thalassemia in iron over loaded-patients 铁负荷患者肝酶、胆红素和血浆蛋白变化与-地中海贫血的关系
Q3 Biochemistry, Genetics and Molecular Biology Pub Date : 2023-01-01 DOI: 10.5455/jabet.2023.d138
Ghufran Hussain, Maytham Abdullah, Nibras Hussein
Changes in liver enzymes and bilirubin in patients with thalassemia depend on genetic changes and the association of other genetic determinants. Iron overload is associated with increased morbidity in both transfusion-dependent and non-transfusion-dependent thalassemia patients. The main objective was to evaluate hepatic enzymes, bilirubin and plasma proteins in βTM patients and also to study the correlations of these parameters with serum hemoglobin and ferritin concentrations in βTM patients. To achieve this goal, the study was directed on two groups, the first is case group includes 39 patients with βTM and the second control group includes 34 subject. Serum ALT, AST, total bilirubin, albumin and total protein concentrations were measured by UV-Vis Spectrophotometer, while the concentration of serum ferritin was measured by ELISA Kit. Our results showed that there are highly significant differences between beta thalassemia major and ferritin at mean (2942.71) , furthermore there are highly significant differences between beta thalassemia major and liver enzymes at (71.98) for AST , (69.42) for ALT, (6.98) for Total protein, (3.92) for Albumin and (2.32) for Total bilirubin. In addition our findings showed there are Correlations between serum ferritin concentrations and liver function testes in βTM patients, where there are highly significant differences between beta thalassemia major and Alanine transaminase at mean (r = 0.44), while the Correlation between serum hemoglobin concentration and liver function testes showed highly significant differences between beta thalassemia major and aspartate aminotransferase at mean (r = 0.52). The study concluded that the increase in serum liver enzymes (ALT, AST) and total bilirubin concentrations in patients with βTM are indicator to liver dysfunction that is correlated to iron overload.
地中海贫血患者肝酶和胆红素的变化取决于遗传变化和其他遗传决定因素的关联。铁超载与输血依赖型和非输血依赖型地中海贫血患者的发病率增加有关。主要目的是评估βTM患者的肝酶、胆红素和血浆蛋白,并研究这些参数与βTM患者血清血红蛋白和铁蛋白浓度的相关性。为了实现这一目标,本研究分为两组,第一组是病例组,包括39例βTM患者,第二组是对照组,包括34名受试者。采用紫外-可见分光光度计测定血清ALT、AST、总胆红素、白蛋白和总蛋白浓度,ELISA Kit测定血清铁蛋白浓度。结果表明,β -地中海贫血与铁蛋白之间存在显著性差异(2942.71),而β -地中海贫血与肝酶之间存在显著性差异,AST(71.98)、ALT(69.42)、Total protein(6.98)、Albumin(3.92)和Total bilirubin(2.32)。此外,我们发现β - tm患者血清铁蛋白浓度与肝功能指标之间存在相关性,其中β -地中海贫血与谷丙转氨酶之间存在极显著性差异(r = 0.44),血清血红蛋白浓度与肝功能指标之间存在极显著性差异(r = 0.52)。本研究认为βTM患者血清肝酶(ALT、AST)和总胆红素浓度升高是与铁负荷相关的肝功能障碍的指标。
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引用次数: 0
Effects of glycyrrhizin, stevioside, and sucralose on the growth and metabolism of the omnipresent gut commensal Escherichia coli 甘草酸、甜菊苷和三氯蔗糖对普遍存在的肠道共生大肠杆菌生长和代谢的影响
Q3 Biochemistry, Genetics and Molecular Biology Pub Date : 2023-01-01 DOI: 10.5455/jabet.2023.d157
Samayeta Tuli, Saadlee Shehreen, Abira Khan, S. Akhteruzzaman, A. Sajib
The rise in popularity of non-caloric sweeteners (NCS) among obese and diabetic patients is due to their ability to provide a sweet taste without any caloric input. However, NCS consumption may be linked to metabolic disorders. The mechanisms behind these adverse effects are still unclear, which suggests that NCS may alter the metabolic activity of the gut microbiome, leading to enteric environmental perturbation and resulting in physiological anomalies in the host. This study investigates how Escherichia coli, a common gut microbe, reacts to three NCS, two of which come from nature (glycyrrhizin and stevioside) and one that is made artificially (sucralose). To assess the impact of these NCS, this study investigated the growth, gene expression, and metabolic pathways of E. coli under different sweetener loads. Compared to the untreated control, low amounts of glycyrrhizin made E. coli grow faster, while similar amounts of sucralose and stevioside had no or a less noticeable effect. At higher concentrations, these sweeteners slowed down or inhibited the growth of the bacteria. Thus, NCS may have dose-dependent impacts on gut microbes. After treatment with amounts that corresponded to the acceptable daily intake, the expression of key metabolic genes showed altered expression, which may potentially affect their metabolism. At different concentrations of the NCS, there were clear differences in the global metabolomic profile between the control and the different NCS treatments. Under in vitro conditions, glycyrrhizin and sucralose appeared to have a less divergent impact on E. coli growth, gene expression, and metabolism, which may suggest that these are relatively safer sugar substitutes for humans.
无热量甜味剂(NCS)在肥胖和糖尿病患者中越来越受欢迎,因为它们能够在不输入任何热量的情况下提供甜味。然而,食用NCS可能与代谢紊乱有关。这些不良反应背后的机制尚不清楚,这表明NCS可能改变肠道微生物群的代谢活性,导致肠道环境扰动,导致宿主生理异常。这项研究调查了大肠杆菌(一种常见的肠道微生物)对三种NCS的反应,其中两种是天然的(甘草酸苷和甜菊糖苷),另一种是人工合成的(三氯蔗糖)。为了评估这些NCS的影响,本研究调查了大肠杆菌在不同甜味剂负荷下的生长、基因表达和代谢途径。与未经处理的对照组相比,少量的甘草酸使大肠杆菌生长得更快,而等量的三氯蔗糖和甜菊糖甙没有或不太明显的影响。在较高浓度下,这些甜味剂减缓或抑制了细菌的生长。因此,NCS可能对肠道微生物有剂量依赖性影响。在与每日可接受摄入量相对应的剂量治疗后,关键代谢基因的表达出现改变,这可能会影响它们的代谢。在不同浓度的NCS下,对照和不同NCS处理之间的总体代谢组学特征存在明显差异。在体外条件下,甘草酸和三氯蔗糖对大肠杆菌生长、基因表达和代谢的影响差异较小,这可能表明它们对人类来说是相对安全的糖替代品。
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引用次数: 0
Influence of the High Mobility Group A1 genetic polymorphism on indices of metabolic syndrome and insulin resistance in the Iraqi population: Case-control study 伊拉克人群高流动性A1基因多态性对代谢综合征和胰岛素抵抗指标的影响:病例对照研究
Q3 Biochemistry, Genetics and Molecular Biology Pub Date : 2023-01-01 DOI: 10.5455/jabet.2023.d129
Mirna Faiq, E. Saleh, O. Fathalla
ABSTRACT: The high mobility group A1 gene (HMGA1) rs139876191 variant has been related to metabolic syndrome and type 2 diabetes, but data are lacking in Middle Eastern populations. The study aimed to assess whether the HMGA1 rs139876191 variant is associated with metabolic syndrome risk and whether this variant predicts the risk of insulin resistance. This case-control study was carried out at single center in Kirkuk city/ Iraq from February to August 2022. Polymorphisms in HMGA1 and genotyping were identified by Sanger sequencing of genomic DNA obtained from 91 Iraqi participants (61 patients with metabolic syndrome and 30 control). Lipid profile, serum (glucose and insulin), glycated hemoglobin, blood pressure, body mass index, and waist circumference were also measured. The high prevalence of the del/del genotype of rs139876191 was found. Minor allele frequency of rs139876191 was (0.16) in both metabolic syndrome and the control group. A non-significant difference in genotyping was identified between total metabolic syndrome and the control group. The del/ins variant was associated with significantly higher waist circumference, triglyceride(TG), low-density lipoprotein(LDL), very low-density lipoprotein(VLDL), and glycated hemoglobin(HbA1c) (P=0.03, 0.041, 0.007, 0.034, and 0.001 respectively), and with significantly lower high-density lipoprotein(HDL) (p=0.000). Linear regression analysis showed no significant effect of the variant (del/ins) on developing insulin resistance. Thus, rs139876191 polymorphism with del/ins genotype in the HMGA1 gene was not associated with metabolic syndrome risk but it was associated with indices of metabolic syndrome including waist circumference, TG, HDL, LDL, VLDL, and HbA1c. Besides, this variant did not predict the risk of insulin resistance.
摘要:高迁移率A1基因(HMGA1) rs139876191变异与代谢综合征和2型糖尿病有关,但在中东人群中缺乏相关数据。该研究旨在评估HMGA1 rs139876191变异是否与代谢综合征风险相关,以及该变异是否预测胰岛素抵抗的风险。该病例对照研究于2022年2月至8月在伊拉克基尔库克市的单一中心进行。通过对91名伊拉克参与者(61名代谢综合征患者和30名对照组)的基因组DNA进行Sanger测序,确定了HMGA1基因多态性和基因分型。同时测量血脂、血清(葡萄糖和胰岛素)、糖化血红蛋白、血压、体重指数和腰围。发现rs139876191的del/del基因型高发。代谢综合征和对照组rs139876191的次要等位基因频率均为(0.16)。总代谢综合征与对照组在基因分型上无显著差异。del/ins变异与腰围、甘油三酯(TG)、低密度脂蛋白(LDL)、极低密度脂蛋白(VLDL)和糖化血红蛋白(HbA1c)显著增高相关(P分别为0.03、0.041、0.007、0.034和0.001),与高密度脂蛋白(HDL)显著降低相关(P= 0.000)。线性回归分析显示该变异(del/ins)对胰岛素抵抗无显著影响。因此,HMGA1基因中带有del/ins基因型的rs139876191多态性与代谢综合征风险无关,但与代谢综合征的腰围、TG、HDL、LDL、VLDL、HbA1c等指标相关。此外,这种变异并不能预测胰岛素抵抗的风险。
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引用次数: 0
Antibiotic resistance pattern in the bacterial strains of urinary tract infection in Tangail city, Bangladesh 孟加拉国坦盖尔市尿路感染细菌菌株的抗生素耐药模式
Q3 Biochemistry, Genetics and Molecular Biology Pub Date : 2023-01-01 DOI: 10.5455/jabet.2023.d137
Nishat Akther, Farjana Hira, A. Khatun, Shawon Md, S. Abdullah, Esrat Shorna, Ashekul Islam, K. Islam, N. Hossain
Background: Antimicrobial resistance has become an alarming issue all over the world. Moreover, in the developing countries as well as in Bangladesh facing this badly due to lack of study. Antibiotic resistance is prevalent among the bacterial pathogens causing urinary tract infections. Urinary tract infections affect >30% of people around the world. Worldwide, about 150 million people experience urinary tract infections each year. Antimicrobial treatment is often prescribed ‘empirically’ without antibiotic susceptibility testing to treat urinary tract infections (UTIs). Aims: The prevalence of antibiotic resistance is worsening, probably because of the increasing number of multidrug-resistant bacterial strains and the indiscriminate use of broad-spectrum antibiotics and empirical treatment. This study aims to determine the frequency and antibiotic resistance pattern of bacteria from suspected UTIs in Bangladeshi patients. Methods: In our study, about 200 samples of positive UTIs patients were analyzed with several parameters to see the antibiotic resistance rate. Result: After examining the patient’s sample of UTIs antibiotic resistance rate is alarming and the most causative bacteria is Escherichia coli which is about 61.8%. Among the 200 urine sample suspected UTI patients 66% and 30% are female and male, respectively. Conclusions: Empirical therapy should be guided to control the antibiotic resistance. Especially, developing country should accept the challenge with proper infrastructure to get the surveillance of resistance, as resistance varies from region to region. Appropriate antibiotics should be focused for the rational use of antibiotics to prevent antibiotics resistance through common infections.
背景:抗菌素耐药性已成为全世界一个令人担忧的问题。此外,在发展中国家以及孟加拉国,由于缺乏研究,面临着这一严重问题。抗生素耐药性在引起尿路感染的细菌病原体中普遍存在。全世界有30%的人患有尿路感染。全世界每年约有1.5亿人经历尿路感染。在治疗尿路感染时,通常是“凭经验”开具抗菌药物治疗,而没有进行抗生素敏感性试验。目的:抗生素耐药性的患病率正在恶化,可能是由于耐多药菌株的增加和滥用广谱抗生素和经验性治疗。本研究旨在确定孟加拉国患者疑似尿路感染细菌的频率和抗生素耐药性模式。方法:对200例尿路感染阳性患者进行多项指标分析,了解其耐药性。结果:经检查,患者尿路感染的耐药率令人担忧,其中以大肠杆菌最多,约占61.8%。200例尿路感染疑似患者中,女性占66%,男性占30%。结论:应指导经验性治疗,控制抗生素耐药性。特别是,发展中国家应该接受挑战,拥有适当的基础设施来监测耐药性,因为耐药性因地区而异。应注重适当的抗生素,合理使用抗生素,通过常见感染预防抗生素耐药。
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引用次数: 0
No evidence of relationship between colorectal cancer susceptibility and ERCC2 gene polymorphisms 没有证据表明结直肠癌易感性与ERCC2基因多态性有关
Q3 Biochemistry, Genetics and Molecular Biology Pub Date : 2023-01-01 DOI: 10.5455/jabet.2023.d155
R. Farhad, E. Saleh, A. Alsammarraie
Background: Excision repair cross-complementing group 2 gene (ERCC2) polymorphisms have been linked as being a risk factor for colorectal cancer (CRC) emergence. However, data from several studies are contradictory. To validate genetic biomarkers of the CRC; the impact of the following ERCC2 polymorphism (rs1799793 and rs238406) was examined on CRC susceptibility among sample of Iraqi population. Methods: A total of 126 subjects were enrolled in this case control study; 78 CRC patients and 48 apparently healthy individuals who are age, gender, smoking status and BMI matched. Polymerase chain reaction (PCR) was used for genotyping, followed by sequencing then the association between genetic polymorphisms and CRC risk was investigated. Results: No associations were detected between ERCC2 genotypes or haplotypes and CRC susceptibility. Even though there was strong linkage disequilibrium (D′= 0.82). After stratification according to participants’ demographics, no effects were observed for age, gender, smoking status and BMI. Conclusions: Taken together the following results suggest that ERCC2 polymorphisms do not influence CRC development.
背景:切除修复交叉互补2组基因(ERCC2)多态性被认为是结直肠癌(CRC)发生的危险因素。然而,一些研究的数据是相互矛盾的。验证结直肠癌的遗传生物标志物;研究了以下ERCC2多态性(rs1799793和rs238406)对伊拉克人群结直肠癌易感性的影响。方法:纳入病例对照研究126例;年龄、性别、吸烟状况和BMI相匹配的结直肠癌患者78例,明显健康者48例。采用聚合酶链反应(PCR)进行基因分型,测序,研究遗传多态性与结直肠癌风险的关系。结果:未发现ERCC2基因型或单倍型与结直肠癌易感性相关。尽管存在较强的连锁不平衡(D ' = 0.82)。根据参与者的人口统计学进行分层后,没有观察到年龄、性别、吸烟状况和BMI的影响。结论:综合以下结果表明,ERCC2多态性不影响结直肠癌的发展。
{"title":"No evidence of relationship between colorectal cancer susceptibility and ERCC2 gene polymorphisms","authors":"R. Farhad, E. Saleh, A. Alsammarraie","doi":"10.5455/jabet.2023.d155","DOIUrl":"https://doi.org/10.5455/jabet.2023.d155","url":null,"abstract":"Background: Excision repair cross-complementing group 2 gene (ERCC2) polymorphisms have been linked as being a risk factor for colorectal cancer (CRC) emergence. However, data from several studies are contradictory. To validate genetic biomarkers of the CRC; the impact of the following ERCC2 polymorphism (rs1799793 and rs238406) was examined on CRC susceptibility among sample of Iraqi population. Methods: A total of 126 subjects were enrolled in this case control study; 78 CRC patients and 48 apparently healthy individuals who are age, gender, smoking status and BMI matched. Polymerase chain reaction (PCR) was used for genotyping, followed by sequencing then the association between genetic polymorphisms and CRC risk was investigated. Results: No associations were detected between ERCC2 genotypes or haplotypes and CRC susceptibility. Even though there was strong linkage disequilibrium (D′= 0.82). After stratification according to participants’ demographics, no effects were observed for age, gender, smoking status and BMI. Conclusions: Taken together the following results suggest that ERCC2 polymorphisms do not influence CRC development.","PeriodicalId":36275,"journal":{"name":"Journal of Advanced Biotechnology and Experimental Therapeutics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70797522","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
Antimicrobial Resistance: Understanding the Mechanism and Strategies for Prevention and Control 抗微生物药物耐药性:了解预防和控制的机制和策略
Q3 Biochemistry, Genetics and Molecular Biology Pub Date : 2023-01-01 DOI: 10.5455/jabet.2023.d142
M. Ali, R. Reshad, M. Aunkor, Gokul Biswas, A. Mahmud, M. Miah
Antimicrobial resistance (AMR) is a growing public health concern globally, with the threat of a post-antibiotic era, where common infections can become fatal, a very plausible reality. Despite ongoing efforts to control AMR, both mortality and expenses have increased. To combat this threat, a thorough understanding of the mechanisms and the driver behind this issue needs to be known. The key mechanisms of resistance are modification or destruction of antimicrobials, reduction of access to the target, and alteration of the target. These mechanisms may be present in the microorganisms naturally or may have been acquired from other microorganisms. As AMR jeopardizes the successful prevention and treatment of many infectious diseases, this article looks at the causes of AMR, along with the possible mechanisms of resistance development, and suggested control strategies to deal with the problem conclusively.
抗微生物药物耐药性(AMR)是一个日益严重的全球公共卫生问题,随着后抗生素时代的威胁,常见感染可能成为致命的,这是一个非常合理的现实。尽管正在努力控制抗菌素耐药性,但死亡率和费用都在增加。为了对抗这种威胁,需要彻底了解这个问题背后的机制和驱动因素。耐药的关键机制是抗菌素的修饰或破坏,减少对靶标的获取,以及改变靶标。这些机制可能自然存在于微生物中,也可能是从其他微生物获得的。由于AMR危及许多传染病的成功预防和治疗,本文着眼于AMR的原因,以及可能的耐药性发展机制,并提出控制策略,以最终解决这一问题。
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引用次数: 0
DMRT1, RBMY, and AZFb genes polymorphism and expression role in azoospermia susceptibility DMRT1、RBMY和AZFb基因多态性及其表达在无精子症易感性中的作用
Q3 Biochemistry, Genetics and Molecular Biology Pub Date : 2023-01-01 DOI: 10.5455/jabet.2023.d143
Azeez Saleh, Narges Dastmalchi, Parisa Banamolaei, R. Safaralizadeh
Male infertility can occur due to spermatogenesis defects. The most common causes of male infertility are azoospermia and oligospermia, which have several underlying factors, one of which is genetic. This study aimed to investigate the association of azoospermia with the DMRT1 and RBMY1A1 genes polymorphisms and AZFb region microdeletions in Iranian men. Moreover, these genes expression were evaluated by reverse transcriptase-polymerase chain reaction (RT-PCR). A total of 100 Iranian men with azoospermia, oligozoospermia, or severe oligozoospermia and 100 fertile controls were included in this case-control study. A total of 200 subjects were genotyped for DMRT1 rs755383 and RBMY1A1 rs1481942953 polymorphisms using Tetra-ARMS PCR. The presence of two sequence-tagged sites (STS) markers from the Y chromosome AZFb region was also investigated by multiplex PCR. RT-PCR was used to analyze the expression in the testis tissue of azoospermia patients. With a P-value of 0.038, rs755383 in the DMRT1 gene was associated with an increased risk of azoospermia. However, no significant difference was found in genotype distribution in the RBMY1A1 (rs1481942953) gene polymorphism. Four patients showed Y chromosome microdeletions with sY127 and sY134 markers in the AZFb region. Infertile males' cDNA analysis revealed low expression levels for DMRT1 and PRY (one of the main genes in the AZFb region) with a p-value<0.0001. In contrast, RBMY1A1 expression level did not differ between patients and control groups with a p-value of 0.112. A receiver operating characteristic (ROC) curve analysis was carried out to detect genes with biomarker potential. With AUCs of 83% and 77%, DMRT1 and PRY had diagnostic marker potential in azoospermia detection.
男性不育可因精子发生缺陷而发生。男性不育最常见的原因是无精子症和少精子症,这有几个潜在的因素,其中一个是遗传的。本研究旨在探讨伊朗男性无精子症与DMRT1和RBMY1A1基因多态性和AZFb区域微缺失的关系。此外,通过逆转录聚合酶链反应(RT-PCR)评估这些基因的表达。本病例对照研究共纳入了100名无精子症、少精子症或严重少精子症的伊朗男性和100名可生育的对照组。采用teat - arms PCR对200名受试者进行DMRT1 rs755383和RBMY1A1 rs1481942953多态性基因分型。用多重PCR方法研究了Y染色体AZFb区域的两个序列标记位点(STS)标记的存在。RT-PCR检测无精子症患者睾丸组织中表达情况。DMRT1基因rs755383与无精子症风险增加相关,p值为0.038。而RBMY1A1 (rs1481942953)基因多态性在基因型分布上无显著差异。4例患者出现Y染色体微缺失,AZFb区sY127和sY134标记缺失。不育雄性的cDNA分析显示DMRT1和PRY (AZFb区域的主要基因之一)表达水平较低,p值<0.0001。相比之下,RBMY1A1表达水平在患者和对照组之间无差异,p值为0.112。采用受试者工作特征(ROC)曲线分析,检测具有生物标志物潜力的基因。DMRT1和PRY的auc分别为83%和77%,在无精子症检测中具有诊断标记潜力。
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Journal of Advanced Biotechnology and Experimental Therapeutics
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