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In silico-mediated virtual screening and molecular docking platforms for discovery of non β-lactam inhibitors of y-49 β-lactamase from Mycobacterium tuberculosis 在硅介导的虚拟筛选和分子对接平台中发现结核分枝杆菌y-49 β-内酰胺酶非β-内酰胺抑制剂
Pub Date : 2018-01-30 DOI: 10.15406/mojpb.2018.07.00207
J. González, Elainie Lendebol, A. Shen, M. Philipp, Cristina C. Clement
Tuberculosis (TB), caused by Mycobacterium tuberculosis (Mtb), is a worldwide health concern. The world health organization in its 2017 tuberculosis report states, “TB is the ninth leading cause of death worldwide and the leading cause from a single infectious agent, ranking above HIV/AIDS” [1-3]. The failure to control TB is due to the emergence of Mtb strains that are resistant to first line beta lactam antibiotics, because of overuse. One of the most effective resistance mechanisms to β-lactam antibiotics involves the production of β-lactamases which cleave the amide bond in the target β-lactam ring hydrolyzing the drug before it reaches its target. The beta-lactamases are classified into four classes: A, B, C and D. These classes are based on conserved and distinguishing amino acid motifs [1-3]. Classes A, C, and D include enzymes that hydrolyze their substrates by forming an acyl enzyme through an active site serine. Class B β-lactamases are metalloenzymes that utilize at least one active-site zinc ion to facilitate β-lactam hydrolysis. One of the most efficient and prevalent mechanisms of resistance to β-lactam antibiotics is the production of β-lactamases in both Gram-negative and Gram-positive bacteria that hydrolyze the drugs before they can reach their target and exert the desired effect. These resistance mechanisms are important, and each bacterium can create a combination of defenses depending on the selective pressures placed on it [1-4]. The intrinsic resistance to β-lactam antibiotics was demonstrated to be mainly due to the presence of a chromosomally-encoded gene (blaC) in M. tuberculosis for a Class A, Ambler β-lactamase (BlaC). The BlaC enzyme has already been validated as one of the leading targets of tuberculosis therapy. This enzyme is extremely active against Volume 7 Issue 1 2018
由结核分枝杆菌(Mtb)引起的结核病(TB)是一个全球性的健康问题。世界卫生组织在其2017年结核病报告中指出,“结核病是全球第九大死亡原因,也是单一传染病的主要原因,排名高于艾滋病毒/艾滋病”[1-3]。未能控制结核病的原因是,由于过度使用,出现了对一线内酰胺类抗生素具有耐药性的结核分枝杆菌菌株。β-内酰胺类抗生素最有效的耐药机制之一涉及β-内酰胺酶的产生,该酶在药物到达靶点之前裂解靶β-内酰胺环中的酰胺键,使药物水解。β -内酰胺酶被分为A、B、C和d四类,这些类别是基于保守的和可区分的氨基酸基序[1-3]。A、C和D类包括通过活性位点丝氨酸形成酰基酶水解底物的酶。B类β-内酰胺酶是利用至少一个活性位点锌离子促进β-内酰胺水解的金属酶。对β-内酰胺类抗生素产生耐药性的最有效和普遍的机制之一是革兰氏阴性和革兰氏阳性细菌产生β-内酰胺酶,在药物到达靶点并发挥预期效果之前水解药物。这些抗性机制很重要,每种细菌都可以根据施加在其上的选择性压力创建防御组合[1-4]。对β-内酰胺类抗生素的内在耐药性主要是由于结核分枝杆菌a类Ambler β-内酰胺酶(blaC)的染色体编码基因(blaC)的存在。BlaC酶已经被证实是结核病治疗的主要靶点之一。该酶对2018年第7卷第1期具有极强的活性
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引用次数: 3
DNA - The Phantom Effect, Quantum Hologram and the Etheric Body DNA -幽灵效应,量子全息图和以太体
Pub Date : 2018-01-29 DOI: 10.15406/mojpb.2018.07.00206
L. Gadbois
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引用次数: 0
Ebola virus: an updated review on immunity and vaccine 埃博拉病毒:关于免疫和疫苗的最新审查
Pub Date : 2018-01-19 DOI: 10.15406/MOJPB.2018.07.00205
Nazmin Sultana Runa, Asmaul Husna, S. Yesmin, Nurjahan Yasmin Runa, A. Badruzzaman, Md Mahfujur Rahman, F. Hossain, Md Masudur, Rahman, A. Bari
Ebola virus (EBOV) derived its name from the Ebola River in Democratic Republic of Congo (DRC) (formerly Zaire) where the first Ebola virus disease (EVD) outbreak was observed in 1976 [1]. EBOV is enveloped, non-segmented, negative-stranded RNA virus containing filamentous virion which belongs to the family Filoviridae. EVD is caused by filamentous EBOV associated with mortality rates between 25 and 90 % [2]. The clinical symptoms of this disease are non-specific and flu-like, such as high fever, headache and myalgia at the early stage [3]. The symptoms also included diarrhea and vomiting when the large outbreak occurs in West Africa (2014 to present) [4]. Immune cell disorders are associated at the late stage of this disease such as, diffuse intravascular coagulopathy caused by coagulation and neutrophilia disorders [5-7]. Humans may acquire the disease by close contact with biological fluids of the infected animals or patients. During the acute phase of illness, EBOV has been detected in different body fluids including breast milk, saliva, semen, stool, sweat, tears and urine [8-12]. EBOV has been isolated from urine (9 days) and from aqueous humor (9 weeks) after the virus was cleared from plasma [13].
埃博拉病毒(EBOV)得名于刚果民主共和国(前身为扎伊尔)的埃博拉河,1976年,刚果民主共和国(前身为扎伊尔)首次观察到埃博拉病毒病(EVD)爆发[1]。EBOV是一种包膜、无节段、负链RNA病毒,含有丝状病毒粒子,属于丝状病毒科。埃博拉病毒病由丝状埃博拉病毒引起,死亡率在25%至90%之间[2]。该病临床症状无特异性,呈流感样,早期表现为高热、头痛、肌痛等[3]。在西非发生大规模疫情时(2014年至今),症状还包括腹泻和呕吐[4]。免疫细胞紊乱与该病晚期相关,如凝血引起的弥漫性血管内凝血障碍和中性粒细胞紊乱[5-7]。人类可通过与受感染动物或患者的生物体液密切接触而感染该病。在疾病急性期,EBOV已在不同体液中检测到,包括母乳、唾液、精液、粪便、汗液、眼泪和尿液[8-12]。从血浆中清除埃博拉病毒后,从尿液(9天)和房水(9周)中分离出埃博拉病毒[13]。
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引用次数: 1
Selected concepts on ethics in biopharmaceutical innovation 生物制药创新中的伦理概念选择
Pub Date : 2017-12-29 DOI: 10.15406/mojpb.2017.06.00204
Kadour Ghanemi, Shuangsheng Yan
Responsible research and innovation (RRI) is among the most important issues that have generated a huge debate within the political and social milieu, which became an overall case for the biggest EU Research and innovation program ever Horizon [1]. Responsible research and innovation is among the important doctrines for the sustainability of the company [2]. Ethics and the biopharmaceutical responsible innovation is a paradigm of a sector where the ethics and responsibility of health professionals is inevitably linked to public and private life. The biopharmaceutical research, development and marketing responsibilities are taken by the pharmacists, directors and managers of the biopharmaceutical company, all are a combined healthcare team which work together and have a lot of combined bio drugs innovation’s issues [3]. Now we are in age where the bio pharmacy improves with a high rapidity, a new generation of several bio drugs is discovered for improving survival rates, a lot of chronic and even fatal maladies are promised now with a new series of bio drugs to enhance the patient health [4-7]. The role of this staff (bio pharmacists, directors, and managers) is to minimize the risks and the harm of the new developed bio drugs during the clinical trials process and during the patient’s consumption of this new treatment, also to secure the efficacy of the new bio drug and guarantee that the novel discovered bio drugs can be used safely. Moreover, to facilitate its access and also to strengthen the country’s economy in order to serve the humanity interests and boosting the healthcare progress in general [8]. However, the biopharmaceutical innovation can be seen as a junction between business and health, this gives rise to a several series of ethical and responsibility issues and a dire need to make some rules, standards and principles for the bio drug innovation’s process built on rational and virtues.
负责任的研究与创新(RRI)是最重要的问题之一,在政治和社会环境中引发了巨大的争论,这成为欧盟有史以来最大的研究与创新项目Horizon的总体案例[1]。负责任的研究和创新是公司可持续发展的重要原则之一[2]。伦理和负责任的生物制药创新是卫生专业人员的伦理和责任不可避免地与公共和私人生活联系在一起的一个部门的范例。生物制药的研究、开发和营销责任由生物制药公司的药剂师、董事和经理承担,他们都是一个协同工作的联合医疗团队,有很多联合生物药物创新的问题[3]。现在我们正处于生物制药高速发展的时代,新一代的几种生物药物被发现来提高生存率,许多慢性甚至致命的疾病现在有了一系列新的生物药物来改善患者的健康[4-7]。这些工作人员(生物药师、主任、管理人员)的作用是将新开发的生物药物在临床试验过程和患者使用新疗法过程中的风险和危害降到最低,确保新开发的生物药物的疗效,保证新发现的生物药物可以安全使用。此外,为了方便其获取,也为了加强国家的经济,以服务于人类利益,促进医疗保健的总体进步[8]。然而,生物制药创新是商业与健康的结合点,这就产生了一系列的伦理和责任问题,迫切需要在理性和美德的基础上为生物制药创新过程制定一些规则、标准和原则。
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引用次数: 1
A review on the impact of genetics and genome wide association studies in autoimmunity 遗传学和全基因组关联研究对自身免疫的影响综述
Pub Date : 2017-12-11 DOI: 10.15406/mojpb.2017.06.00203
Harishch, er An, Aram
Autoimmune diseases (AIDs) in humans are considered as major issues in public health. AIDs affect almost 10% of human population [1]. AIDs in human are disorders with complexity and they develop from the interactions between polygenic risk and environmental factors [2]. Investigations of genetics in AIDs contain the potential to have an unbiased view of etiologies in common conditions to identify novel targets for therapy. In the era of pre genomics, the understanding of heritability in disease were derived based on the high prevalence rate of autoimmune disease in twins [3] or family members [4] compared with nonbiological relatives in a shared environment [5]. Apart from the recognition of risk factors influenced by genetics in autoimmune disease, there exists a challenge to identify the causal nucleotide variants and correlate their functional effects. The sequencing of human genome and rapidly emerging technologies in genomics helps us to retrieve the genetic variants that contribute to the risk factors of autoimmune disease. Understandings of genetics in human AIDs were expanded with a high rate of prevalence in the last 15 years. In this review, we analyze the biological lessons learnt from the genetic studies of AIDs in humans.
人类自身免疫性疾病(艾滋病)被认为是公共卫生的主要问题。艾滋病影响了全球近10%的人口。人类艾滋病是一种复杂的疾病,是多基因风险与环境因素相互作用的结果。对艾滋病的遗传学研究有可能在常见情况下对病因有一个公正的看法,从而确定新的治疗靶点。在前基因组学时代,对疾病遗传性的理解是基于双胞胎[3]或家庭成员[4]与共享环境[5]中的非生物学亲属相比自身免疫性疾病的高患病率。除了识别自身免疫性疾病中受遗传影响的风险因素外,还存在一个挑战,即确定因果核苷酸变异并将其功能影响联系起来。人类基因组测序和基因组学中快速出现的技术帮助我们检索导致自身免疫性疾病危险因素的遗传变异。在过去的15年里,对人类艾滋病遗传学的理解随着高流行率而扩大。在这篇综述中,我们分析了从人类艾滋病基因研究中获得的生物学教训。
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引用次数: 0
Urinary protein changes in a rat starvation model 大鼠饥饿模型尿蛋白的变化
Pub Date : 2017-11-24 DOI: 10.15406/MOJPB.2017.06.00202
Yuan Yuan, Fanshuang Zhang, Yanying Ni, Youhe Gao
Protein has been found in urine in all relevant studies. Why are there proteins in urine? If the protein in urine acts as a nutrient, should all proteins be reabsorbed into the blood during starvation to maintain the homeostasis of the internal environment? Are they toxic? Is there any protein in urine when the animal is starved? If the protein in urine is toxic or is discarded for the regulation of body’s own cellular functions, it still must be released into the urine even when the animal is starved. Does the kidney need protein to maintain urine flow? If the protein is necessary to maintain urine flow, at least some of it should remain in the urine even after starvation. Starvation can lead to different disorders of the body. During the process of starvation, a series of energy metabolism changes leads to a decrease of body weight and changes in the body’s components and the metabolic gene expression profile [1,2]. A short duration of starvation can cause the acceleration of protein metabolism [3] and increases in nitrogen excretion, leucine flux and oxidation [4]. All of the above observations illustrate that the effect of starvation on the body may possibly reflect urinary protein changes.
所有相关研究都在尿液中发现了蛋白质。为什么尿液中有蛋白质?如果尿液中的蛋白质是一种营养物质,那么在饥饿的时候,所有的蛋白质都应该被重新吸收到血液中来维持体内环境的平衡吗?它们有毒吗?动物饥饿时尿液中有蛋白质吗?如果尿液中的蛋白质是有毒的,或者是为了调节人体自身的细胞功能而被丢弃的,即使在动物饥饿的时候,它仍然必须被释放到尿液中。肾脏需要蛋白质来维持尿流吗?如果蛋白质是维持尿流所必需的,即使在饥饿后,至少有一些蛋白质应该留在尿液中。饥饿会导致身体的各种失调。在饥饿过程中,一系列能量代谢变化导致体重下降,机体各成分及代谢基因表达谱发生变化[1,2]。短时间的饥饿可导致蛋白质代谢加速[3],氮排泄、亮氨酸通量和氧化增加[4]。以上观察结果表明,饥饿对机体的影响可能反映了尿蛋白的变化。
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引用次数: 3
Antifungal activity of dihydrobenzofuran neolignans 二氢苯并呋喃新木质素的抗真菌活性
Pub Date : 2017-11-24 DOI: 10.15406/MOJPB.2017.06.00201
Herbert J Dias, Nayara As Aquaroni, R. C. Pietro, A. Crotti
Submit Manuscript | http://medcraveonline.com Superficial fungal infections of the skin, hair, and nails are dermatomycoses that affect the individuals’ health quality of life and are considered a public health issue [1-3]. Dermatological infections affect more than 25% of the people worldwide living in tropical and subtropical regions, mainly individuals involved in outdoor activities, such as agriculture, lumbering, and hunting, among others [4-6]. The responsible for the dermatomycoses is pointed out as dermatophytes, non-dermatophytic filamentous and yeasts forms of fungi, but in most of the cases, the etiologic agents are the dermatophytes [7]. Furthermore, the species causative of dermatomycoses demonstrate considerable variation depending on the geographical location, economic situations as well as population migrations and weather conditions, and can affect the treatment of such fungal infections [1,6,8].
皮肤、头发和指甲的浅表真菌感染是一种影响个体健康生活质量的皮肤真菌病,被认为是一个公共卫生问题[1-3]。全世界生活在热带和亚热带地区的人群中有25%以上受到皮肤病感染,主要是从事户外活动的个体,如农业、伐木和狩猎等[4-6]。皮肤真菌病的病原被指出为皮肤真菌、非皮肤真菌的丝状真菌和酵母菌,但在大多数情况下,病原是皮肤真菌[7]。此外,由于地理位置、经济状况、人口迁移和天气条件的不同,导致皮肤真菌病的种类也有很大的差异,并会影响真菌感染的治疗[1,6,8]。
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引用次数: 3
Correct Use of Percent Coefficient of Variation (%CV) Formula for Log-Transformed Data 对数转换数据的百分比变异系数(%CV)公式的正确使用
Pub Date : 2017-11-16 DOI: 10.15406/MOJPB.2017.06.00200
Jesse A. Canchola, Shaowu Tang, P. Hemyari, E. Paxinos, E. Marins
For example, Hatzakis et al. [1], Table 1, showed an assessment of inter-instrument, inter-operator, inter-day, inter-run, intra-run and total variability of the Aptima HIV-1 Quant Dx in various HIV1 RNA concentrations. In Table 1, below, we recreate their total SD and %CV columns (the latter for which they use Formula (1), and calculate the correct log-normal %CV from Formula (7) below. From the Table 1, it can be seen that using the incorrect %CV formula for lognormally distributed data will give abnormally smaller %CVs. Volume 6 Issue 4 2017
例如,Hatzakis等人[1],表1显示了Aptima HIV-1 Quant Dx在不同HIV-1 RNA浓度下的仪器间、操作人员间、日间、运行间、运行内和总变异性的评估。在下面的表1中,我们重新创建了它们的总SD和%CV列(后者使用公式(1)),并从公式(7)中计算出正确的对数正态%CV。从表1可以看出,对对数正态分布的数据使用不正确的%CV公式会得到异常小的%CV。2017年第6卷第4期
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引用次数: 50
The impact of genomics evolution and genomic island in Burkholderia pseudomallei 伪马利氏伯克氏菌基因组进化与基因组岛的影响
Pub Date : 2017-11-16 DOI: 10.15406/MOJPB.2017.06.00199
Alaa A Elnour
Submit Manuscript | http://medcraveonline.com B .pseudomalleus is capable of infecting almost anything because of the spectacular genetic structure, by possessing certain genomic island (GIs) that gives the ability to alteration and to adapt. The genes of this GIs play an important role in pathogenesis ability. Trains which cause disease in humans differ from those causing disease in other animals, Genes on these genomic islands may thus play an important role in the pathogenesis of human melioidosis. It may have the ability to cause disease in humans because of DNA it has acquired from other microorganisms [5]. Its mutation rate is also high, and the organism continues to evolve even after infecting a host [6]. These genetic alterations were primarily driven by environmental pressures outside the human or mammalian host [7].
B .pseudomalleus能够感染几乎任何东西,因为它具有惊人的遗传结构,通过拥有某些基因组岛(GIs),使其具有改变和适应的能力。这些基因在发病能力中起着重要的作用。人类致病序列不同于其他动物致病序列,因此这些基因组岛上的基因可能在人类类鼻疽病的发病机制中起重要作用。它可能有能力引起人类疾病,因为它从其他微生物中获得了DNA[5]。其突变率也很高,即使在感染宿主后,生物体仍在继续进化[6]。这些遗传改变主要是由人类或哺乳动物宿主以外的环境压力驱动的[7]。
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引用次数: 1
DNA testing applied to fibromyalgia syndrome analysis and management DNA检测在纤维肌痛综合征分析和治疗中的应用
Pub Date : 2017-11-13 DOI: 10.15406/mojpb.2017.06.00198
J. I. Lao
FMS has been long considered as a psychogenic or psychosomatic disease. Most patients are suffering this stigma because they show many symptoms which are too many and too diverse to be considered as a single organic disease. For that reason, it is more appropriate to consider fibromyalgia as a syndrome with a vast heterogeneity in causes as well as in severity of symptoms and clinical evolution. It is a health problem which is very frequent in Spain having a prevalence of 2.4% of the population older than 20 years and being more frequent in women than in men, in a ratio of 21:1. Despite the high prevalence, its etiology remains unknown and no effective treatments exist [4].
长期以来,FMS被认为是一种心因性或心身性疾病。大多数患者都遭受这种耻辱,因为他们表现出许多症状,这些症状太多,太多样化,不能被认为是单一的器质性疾病。因此,将纤维肌痛视为一种在病因、症状严重程度和临床演变方面具有巨大异质性的综合征更为合适。这是一个在西班牙非常常见的健康问题,占20岁以上人口的2.4%,女性比男性更常见,比例为21:1。尽管发病率很高,但其病因尚不清楚,目前尚无有效的治疗方法。
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引用次数: 0
期刊
MOJ proteomics & bioinformatics
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