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Sustained drug delivery of capecitabine using natural (bee wax) and synthetic polymer (PLGA) 天然(蜂蜡)和合成聚合物(PLGA)对卡培他滨持续给药的影响
Pub Date : 2018-06-21 DOI: 10.15406/mojddt.2018.02.00042
K. S
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引用次数: 3
Comparative in–vitro antioxidant, anti–inflammatory and anti diabetic activity of standardized polar extracts of S alata 荆芥标准化极性提取物体外抗氧化、抗炎和抗糖尿病活性的比较
Pub Date : 2018-06-18 DOI: 10.15406/mojddt.2018.02.00041
B. Sakshi, Wakode Sharad
Plant‒based products have been known as both nourishment and medicines since ancient times. From the very beginning of the civilization, there is an outrageous relationship between people and plants. In antiquated period the arrangement of treatment was not enhanced like today. The antiquated individuals used to use several parts of plants in various treatment purposes. Plants were not only utilized as medicine, but also in a number of their daily jobs (e.g., fishing, hunting, etc.) purposes. Eventually, plants are the ultimate care taker of environment in a sense. Since acetylsalicylic acid, a synthetic derivative of salicin produced from willow bark, was first presented in 1897,1 natural products have become major sources for chemical compounds used as starting materials. A solitary part of plant may comprise of various therapeutic esteems, but it has been proved that direct intake of crude plant is not good, as it contains both essential and nonessential components. The nonessential ones may not be required by the body in mending purposes or in other circumstances; the nonessential components may in actuality be toxic to the body under some cases. Even the intake of the essential components via the crude extract may lead to an improper dose.2 Within current days considerable research has been progressed in the exploitation of therapeutic plants, all the rage the therapy of various stress‒related disorders caused beside metabolism of oxygen leads to the generation of free radical.3 Free radicals cause weariness of immune system antioxidants, change in gene expression and induce abnormal proteins and add to in excess of one hundred issue in individuals including arthritis, atherosclerosis, ischemia and reperfusion injury of many tissues, central nervous system injury, diabetes, gastritis, cancer and AIDS. Oxidative stress may have critical impact in the glucose transport protein (GLUT) or at insulin receptor.4 The correct part of oxidative stress in the etiology of human diabetes is however not known. Longstanding diabetes is related with modifications in mitochondrial metabolism that outcome in both expanded arrangement of reactive oxygen species (ROS) and disappointment of bioenergetics. Specifically, diabetes causes dysfunction of mitochondria in those tissues very subject to aerobic metabolism, for example, heart, cerebrum and skeletal muscle. The level of mitochondrial failure has been corresponded with the term of diabetes.5 Scroungers of oxidative stress may have an impact in lessening the expanded serum glucose level in diabetes and may mitigate diabetes and in addition diminish its auxiliary entanglements.6 Scroungers of oxidative stress possibly will undergo an impact in reducting the raised serum glucose level in diabetes and in addition diminish its supporting entanglements. Inflammation is normal reaction of the mammalian body to an assortment of hostile specialists including parasites, pathogenic microorganism, poisonous concoction
自古以来,植物性产品就被称为营养品和药物。从人类文明开始,人与植物之间就存在着一种令人发指的关系。在古代,治疗的安排不像今天这样完善。古代人过去常常使用植物的不同部位来达到不同的治疗目的。植物不仅被用作药物,而且还用于许多日常工作(例如,捕鱼,狩猎等)。最终,从某种意义上说,植物是环境的终极守护者。自1897年首次提出从柳树皮中提取水杨酸的合成衍生物乙酰水杨酸以来,天然产物已成为用作起始原料的化合物的主要来源。植物的一个单独部分可能包含各种治疗价值,但已经证明直接摄入粗植物是不好的,因为它含有必需和非必需成分。非必要的,可以不需要机构为修补目的或在其他情况下;在某些情况下,非必需成分实际上可能对身体有毒。即使是通过粗提取物摄入的基本成分也可能导致剂量不当近年来,在治疗植物的开发方面取得了相当大的进展,除氧代谢引起的各种应激相关疾病的治疗引起了自由基的产生自由基引起免疫系统抗氧化剂的疲劳,改变基因表达,诱导蛋白质异常,并在个体中增加一百多种疾病,包括关节炎、动脉粥样硬化、许多组织缺血再灌注损伤、中枢神经系统损伤、糖尿病、胃炎、癌症和艾滋病。氧化应激可能对葡萄糖转运蛋白(GLUT)或胰岛素受体有重要影响然而,氧化应激在人类糖尿病病因学中的正确部分尚不清楚。长期糖尿病与线粒体代谢的改变有关,线粒体代谢的改变导致活性氧(ROS)的增加和生物能量学的下降。具体来说,糖尿病会导致那些非常容易进行有氧代谢的组织,如心脏、大脑和骨骼肌的线粒体功能障碍。线粒体衰竭的程度与糖尿病的病程相对应氧化应激抑制剂可能对降低糖尿病患者升高的血清葡萄糖水平有影响,并可能减轻糖尿病,此外还可能减少其辅助缠结氧化应激患者可能会降低糖尿病患者升高的血糖水平,并减少其支持缠结。炎症是哺乳动物身体对各种有害物质的正常反应,包括寄生虫、致病微生物、有毒混合物质和对组织的物理伤害。在其仲裁者中,诱导型一氧化氮合酶(iNOS)和环氧化酶- 2 (COX-2)是控制炎症过程的重要酶与炎症反应相关的程序令人难以置信,但用于筛选抗炎化合物的重要观点是中性粒细胞的不同元素,花生四烯酸的代谢结果和活性氧(ROS)的假装同样,巨噬细胞在血管炎症的进展和动脉粥样硬化的发展中起着重要作用。巨噬细胞的作用更高
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引用次数: 1
Heg lnc RNA and Cdk1 mRNA in mononuclear cells and regulation of autoantibody levels 单核细胞Heg lnc RNA和Cdk1 mRNA与自身抗体水平的调节
Pub Date : 2018-06-13 DOI: 10.15406/mojddt.2018.02.00040
N. Christensen
We found some years ago an unknow non‒coding RNA fragment in mononuclear cells designated Heg lnc RNA (European Nucleotide Archive: EU137727.1).1,2 Heg RNA was located to chromosome 1, antisense to and overlaps a larger part of exon 7 from Nucks mRNA. Nucks (nuclear ubiquitous casein kinase and cyclin‒dependent substrate) plays a major role in the regulation of transcription and is a substrate for Cdk1. Heg and other RNA products were quantified by RT‒PCR‒HPLC.1 The mean concentration of Heg lnc RNA in normal subjects were 0.15±0.01 amol/μg of DNA.2 Surprisingly we found that Heg lnc RNA was close and negatively correlated with concentrations of TSH receptor autoantibodies (TRAb) in patients with untreated Graves disease. We also study Cdk1 and CK2 mRNAs (homo sapiens casein kinase I and II), which both are members of the cyclin‒ dependent kinase cascade. Cdk1 is important for cell division and differentiation.3 Cdk1 was positively correlated with concentrations of TRAb, but only provided Heg was included in the analysis. We did not find other RNA fragments, which correlated with TRAb. The interaction between Heg lnc RNA and Cdk1 mRNA explained a large and high significant part of the variation in TRAb. It is easy to understand why Cdk1, which regulates cell cycle, correlates with TRAb. The mechanism of action for Heg, on the other hand, is not known. Heg may reflect effects of Nucks, but there was no correlation between Nucks and TRAb. Gene expression in mononuclear cells after incubation for 20 hours led to the expected increase in GCR and NF‒kB mRNAs, whereas Heg, Nucks mRNA and Cd14 mRNA were only slightly changed. A general inhibition of gene expression reduced the concentration of both Nucks mRNA and Heg significant.
几年前,我们在单个核细胞中发现了一个未知的非编码RNA片段,命名为Heg lnnc RNA(欧洲核苷酸档案:EU137727.1)。1,2 Heg RNA位于1号染色体上,与Nucks mRNA的外显子7的大部分反义重叠。Nucks(核泛在酪蛋白激酶和周期蛋白依赖底物)在转录调控中起主要作用,是Cdk1的底物。采用rt - pcr - hplc法对Heg等RNA产物进行定量分析正常受试者的Heg - lnc RNA平均浓度为0.15±0.01 amol/μg DNA.2令人惊讶的是,我们发现Heg - lnc RNA与未经治疗的Graves病患者的TSH受体自身抗体(TRAb)浓度呈密切负相关。我们还研究了Cdk1和CK2 mrna(智人酪蛋白激酶I和II),它们都是周期蛋白依赖性激酶级联的成员。Cdk1在细胞分裂和分化中起重要作用Cdk1与TRAb浓度呈正相关,但前提是分析中包含Heg。我们没有发现其他与TRAb相关的RNA片段。Heg lnc RNA和Cdk1 mRNA之间的相互作用解释了TRAb变异的大部分和高度显著的部分。很容易理解为什么调节细胞周期的Cdk1与TRAb相关。另一方面,Heg的作用机制尚不清楚。Heg可能反映了Nucks的作用,但Nucks与TRAb之间没有相关性。单核细胞孵育20小时后,基因表达导致GCR和NF-kB mRNA预期增加,而Heg, Nucks mRNA和Cd14 mRNA仅略有变化。基因表达的普遍抑制显著降低了Nucks mRNA和Heg的浓度。
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引用次数: 0
In silico Identification of potential 5α‒reductase inhibitors for prostatic diseases: QSAR modelling, molecular docking, and pre ADME predictions 前列腺疾病潜在5α -还原酶抑制剂的鉴定:QSAR建模、分子对接和ADME前预测
Pub Date : 2018-06-12 DOI: 10.15406/MOJDDT.2018.02.00039
N. Dhingra, Akanksha, V. Mehta, Richa Dhingra, Monika
Steroids assume an essential part in a several processes, ranging from the differentiation, growth, development, physiological and regenerative functions in the human body,1 because of their ability to cross membrane easily.2 Steroids as well as their derivatives have the potential to be developed as drugs for the treatment of a large number of diseases including cardiovascular, autoimmune diseases, brain tumours, breast cancer, osteoarthritis, prostate cancer etc.3‒6 The promise of using steroids for development of lead molecules lies in the regulation of a variety of biological processes by these molecules and being a fundamental class of signalling molecules.7,8 Benign prostatic hyperplasia (BPH) and Prostate Cancer (PC), are the leading disorders of the old age men. These prostatic diseases are characterized by a progressive enlargement of prostatic tissue, that results in the obstruction of proximal urethra and cause urinary flow disturbances.9 Nearly half of men aged over 50years show histological evidence of BPH and PC and proportion increases to 80% by the age of 70.10 Dihyrotestesterone (DHT) hypothesis postulates that androgens play an important role in growth of prostate. Male hormone testosterone (T), is biosynthesized in testicles and adrenal glands, and converted to more potent androgen i.e. dihydrotestosterone (DHT) by NADPH dependent enzyme 5α‒Reductase (5AR). 5AR is a membrane‒ bound enzyme that irreversibly catalyses the reduction of 4‒ene‒3‒ oxosteroids to the corresponding 5α‒3‒oxosteroids Figure 1. Three isozymes have been identified for 5AR based on their gene sequence, location, and pH. Type 1 isozyme (5AR1) is expressed in skin and liver and show maximal activity at pH ranging from 6.0∼8.5, whereas type 2 isozyme (5AR2) shows its activity at pH 5.5 in prostate and other genital tissues.11 Recently, type 3 isozyme (5AR3) has also been identified in castration‒resistant prostate cancer cells including other tissues like pancreas, brain, skin and adipose tissues.12‒14 5AR has emerged as a therapeutic target, as 5α‒Reductase Inhibitors (5ARIs) by causing the suppression of DHT biosynthesis provided a logical treatment for BPH and PC.15,16 Further, isolation and characterisation of the three different isozymes have led in the advancement of new and selective inhibitors with improved anticancer therapies.17 Computer Aided Drug Designing (CADD) in perspective of QSAR between natural activity and physicochemical descriptor, is a gadget that has been utilized to build the productivity of the medication disclosure process.18 Though primary sequence of 5AR isozymes, are available, but crystal structure of 5AR have yet not been determined as yet they have not been isolated and purified from tissues or cells despite. In the absence of structural information of target protein, different receptor mapping techniques can create permitting developing 3D surrogate of the coupling pocket and could be utilized to predict
甾体激素在人体的分化、生长、发育、生理和再生等过程中起着至关重要的作用,这是因为它们具有容易跨膜的能力类固醇及其衍生物有潜力发展成为治疗大量疾病的药物,包括心血管疾病、自身免疫性疾病、脑肿瘤、乳腺癌、骨关节炎、前列腺癌等。3 - 6使用类固醇开发铅分子的前景在于这些分子可以调节各种生物过程,并且是一类基本的信号分子。7,8良性前列腺增生(BPH)和前列腺癌(PC)是老年男性的主要疾病。这些前列腺疾病的特点是前列腺组织的进行性扩大,导致尿道近端阻塞,引起尿流障碍在50岁以上的男性中,有近一半的人表现出前列腺增生和前列腺增生的组织学证据,到70.10岁时,这一比例增加到80%。雄性激素睾酮(T)在睾丸和肾上腺中生物合成,并通过NADPH依赖性酶5α -还原酶(5AR)转化为更有效的雄激素,即双氢睾酮(DHT)。5AR是一种膜结合酶,可以不可逆地催化4 -烯- 3 -氧甾体还原为相应的5α - 3 -氧甾体。根据基因序列、位置和pH值,已经鉴定出了3种与5AR相关的同工酶。1型同工酶(5AR1)在皮肤和肝脏中表达,在pH值为6.0 ~ 8.5时表现出最大活性,而2型同工酶(5AR2)在前列腺和其他生殖器组织的pH值为5.5时表现出活性最近,3型同工酶(5AR3)也在去势抵抗性前列腺癌细胞中被发现,包括胰腺、脑、皮肤和脂肪组织等其他组织。5α -还原酶抑制剂(5ARIs)通过抑制DHT的生物合成为BPH和pc提供了一种合理的治疗方法。此外,三种不同同工酶的分离和表征导致了新的选择性抑制剂的发展,从而改善了抗癌治疗从自然活性和物理化学描述符之间的QSAR角度来看,计算机辅助药物设计(CADD)是一种用于建立药物披露过程生产力的工具虽然5AR同工酶的一级序列已经确定,但其晶体结构尚未确定,尚未从组织或细胞中分离纯化。在缺乏靶蛋白结构信息的情况下,不同的受体定位技术可以创建允许开发耦合袋的3D替代品,并可用于预测
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引用次数: 2
In vitro analysis of antibacterial and antifungal potential of lichen species of Everniastrum cf vexans, Parmotrema blanquetianum, Parmotrema reticulatum and Peltigera laciniata 毛毡、毛毡甲、网状毡甲和白毡甲地衣的体外抑菌活性分析
Pub Date : 2018-06-08 DOI: 10.15406/MOJDDT.2018.02.00038
Claudia M. Plaza, Celina Pérez de Salazar, Ramon E Plaza, M. Vizcaya, Gabriela Rodríguez-Castillo, Gerardo Medina-Ramírez
Infectious diseases caused by bacteria, fungi and others microorganism remain a major threat to public health, despite tremendous progress in human medicine. Their impact is particularly great in developing countries because of the relative unavailability of medicines and the emergence of widespread drug resistance. Interests in natural products with antimicrobial properties have evolved as a result of current problems associated with the use of antibiotics. Plant derived antimicrobial compounds have been the source of novel therapeutics for many years. This may be due to the fact that these compounds show the structural intricacy and chemical diversity required to interact with antibacterial protein targets and provide vast opportunities for new drug development.1,2 Just as the higher plants have been used in folk medicine, lichens have also been used in food and in folk medicine in many countries over a considerable period of time. A lichen is a composite organism that emerges from algae or cyanobacteria (or both) living among filaments of fungus in a mutually beneficial (symbiotic) relationship. They represent taxonomically and physiologically a diverse group of organisms. Lichens produce a number of characteristic secondary metabolites called lichen substances, which seldom occur in other organisms. Depsides and depsidones are among the most common secondary metabolites produced by the fungal symbiont. The lichens and their metabolites are shown to possess various biological activities such as antimicrobial, antiviral, antiprotozoal, enzyme inhibitory, insecticidal, antitermite, cytotoxic, antioxidant, antiherbivore, wound healing, analgesic and anti‒inflammatory.1‒5 Lichens are very abundant organisms and can withstand hostile environmental conditions; therefore, they are able to colonize diverse ecosystems. It is estimated that there are between 17.500 and 20.000 species of lichens known in the world, with about 1.500 lichen‒shaped fungi.6 In Venezuela, there are 1.320 species reported by and probably around an estimated 4.000 are expected to be discovered of which 85% are concentrated in the Venezuelan Andes, which represents one of the most rich and diverse regions of the world. Thus the aim of the present study was investigate the antibacterial and antifungal potential of four lichens from Venezuelan Andes i.e., Everniastrum cf. vexans, Parmotrema blanquetianun, Parmotrema reticulatum, Peltigera laciniata.7‒9
尽管人类医学取得了巨大进步,但由细菌、真菌和其他微生物引起的传染病仍然是对公众健康的主要威胁。它们在发展中国家的影响特别大,因为药品相对缺乏,而且出现了广泛的耐药性。由于目前与抗生素使用相关的问题,对具有抗菌特性的天然产物的兴趣不断发展。植物源性抗菌化合物多年来一直是新型治疗药物的来源。这可能是由于这些化合物显示出与抗菌蛋白靶点相互作用所需的结构复杂性和化学多样性,并为新药开发提供了巨大的机会。就像高等植物被用于民间医药一样,地衣在相当长的一段时间内也被用于许多国家的食品和民间医药中。地衣是一种由藻类或蓝藻(或两者都有)生长出来的复合生物,生活在真菌的细丝中,是一种互利的(共生的)关系。它们在分类学上和生理学上代表了一组不同的生物。地衣产生许多特有的次生代谢物,称为地衣物质,这在其他生物中很少发生。depides和depsidones是真菌共生体产生的最常见的次生代谢物。地衣及其代谢产物具有抗菌、抗病毒、抗原虫、酶抑制、杀虫、除蚁、细胞毒、抗氧化、抗草食、伤口愈合、镇痛和抗炎等多种生物活性。地衣是非常丰富的生物,可以承受恶劣的环境条件;因此,它们能够在不同的生态系统中生存。据估计,世界上已知的地衣约有17500至20000种,其中地衣形状的真菌约有1500种在委内瑞拉,已报告的物种有1320种,预计可能发现约4000种,其中85%集中在委内瑞拉的安第斯山脉,这是世界上最丰富和最多样化的地区之一。因此,本研究的目的是研究4种产自委内瑞拉安第斯山脉地衣(Everniastrum cf. vexans, Parmotrema blanquetianun, Parmotrema reticulatum, Peltigera laciniata)的抗菌和抗真菌潜力
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引用次数: 8
Soluble dietary fiber fraction of Trigonella foenum graecum seeds prevent olanzapine induced metabolic syndrome in rats 甘油三酯种子可溶性膳食纤维部分对奥氮平诱导大鼠代谢综合征的预防作用
Pub Date : 2018-06-01 DOI: 10.15406/MOJDDT.2018.02.00037
A. Kushwah, K. Saini, G. Gupta
Trigonella foenum graecum TF belongs to the family Fabaceae it has been from ancient time used as a spice and traditionally ethno pharmacological medicine for promoting digestion and reduce blood sugar levels in a diabetic patient in India In the present study soluble dietary fiber SDF was isolated from TF seeds and investigates the role of SDF of TF against olanzapine induced metabolic complications Metabolic syndrome was induced by oral administration of OLZ mg kg in rats for days Then rats were treated with OLZ and SDFF of TF at and mg kg po day and metformin as a standard mg kg po day SDF of TF treatment significantly decreased body weight gain feed and water intake blood glucose oral glucose tolerance test OGTT lipid profile liver enzymes uric acid and improved hemodynamic parameters antioxidant status and reduced histopathological changes caused by OLZ treatment in rats SDF of TF increased the satiety suppresses appetite and improved the glucose and lipid metabolism and antioxidant potential exert the beneficial role in olanzapine induced metabolic syndrome
生长foenum graecum TF属于家庭蝶形花科已经从古代传统上用作香料和人种药理药促进消化和减少糖尿病病人血糖水平在印度在目前的研究中可溶性膳食纤维自卫队隔绝TF种子和调查的角色自卫队TF对奥氮平引起的代谢并发症引起的代谢综合征是口服OLZ毫克公斤老鼠几天然后老鼠治疗和OLZ SDFF TF的毫克公斤po和二甲双胍作为标准毫克公斤po天自卫队TF治疗显著降低身体体重增加饲料和水摄入血糖口服葡萄糖耐量试验OGTT血脂肝酶抗氧化剂尿酸和改善血流动力学参数状态,减少组织病理学变化引起的OLZ治疗大鼠自卫队TF增加饱腹感的抑制食欲,改善葡萄糖和脂质代谢和抗氧化潜能在奥氮平诱导的代谢综合征中发挥有益作用
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引用次数: 0
期刊
MOJ Drug Design Development & Therapy
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