botanical drugs

植物性药物
  • 文章类型: Journal Article
    癌症是发病率和死亡率不断增加的主要疾病。中药代谢产物具有独特的疗效和独特的优势,在抗癌方面发挥了重要作用。Ferroptosis,铁依赖的程序性死亡,其特征是脂质过氧化物的积累,从传统的细胞死亡中脱颖而出,如细胞凋亡,焦亡,坏死,和自噬。最近的证据表明,中药代谢物靶向铁死亡治疗癌症的潜力。我们使用PubMed收集并筛选了2023年6月或之前发表的相关文章,谷歌学者,和WebofScience。在科学数据库中搜索的关键词是Ferroptosis,癌症,肿瘤,中药,植物药,和植物医学。只有与铁死亡有关的研究,来自中药的代谢物,癌症被认为是。在这次审查中,本文综述了目前有关铁凋亡机制的知识,并综述了中药代谢产物靶向铁凋亡抑制肿瘤的研究进展。
    Cancer is a major disease with ever-increasing morbidity and mortality. The metabolites derived from traditional Chinese medicine (TCM) have played a significant role in combating cancers with curative efficacy and unique advantages. Ferroptosis, an iron-dependent programmed death characterized by the accumulation of lipid peroxide, stands out from the conventional forms of cell death, such as apoptosis, pyroptosis, necrosis, and autophagy. Recent evidence has demonstrated the potential of TCM metabolites targeting ferroptosis for cancer therapy. We collected and screened related articles published in or before June 2023 using PubMed, Google Scholar, and Web of Science. The searched keywords in scientific databases were ferroptosis, cancer, tumor, traditional Chinese medicine, botanical drugs, and phytomedicine. Only research related to ferroptosis, the metabolites from TCM, and cancer was considered. In this review, we introduce an overview of the current knowledge regarding the ferroptosis mechanisms and review the research advances on the metabolites of TCM inhibiting cancer by targeting ferroptosis.
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  • 文章类型: Journal Article
    背景:天然产物广泛用于原发性失眠(PI)。这项带有试验序贯分析(TSA)的系统评价旨在总结有关枣仁安神(ZRAS)处方的有效性和安全性的证据,一种商业中草药制剂,用于治疗PI。方法:在2024年1月之前,在七个数据库中系统地搜索了评估ZRAS与对照或作为附加治疗的对照临床试验。采用CochraneROB2.0和ROBINS-I工具来确定偏倚风险。使用GRADE框架评估证据质量。结果:我们分析了22项研究,涉及2142名参与者。发现ZRAS在降低匹兹堡睡眠质量指数评分方面的效果与苯二氮卓类药物相当[MD=0.39,95CI(-0.12,0.91),p=0.13],优于Z-药物[MD=-1.31,95CI(-2.37,-0.24),p=0.02]。在催眠药中添加ZRAS可显着降低多导睡眠记录的睡眠发作潜伏期[MD=-4.44分钟,95CI(-7.98,-0.91),p=0.01]和觉醒次数[MD=-0.89次,95CI(-1.67,-0.10),p=0.03],总睡眠时间增加[MD=40.72分钟,95CI(25.14,56.30),p<0.01],与单独使用催眠药相比,不良事件更少。TSA验证了这些定量合成结果的稳健性。然而,证据质量从非常低到低不等。可用于随访的有限数据不支持荟萃合成。结论:虽然ZRAS方剂治疗PI具有良好的疗效,证据的整体质量是有限的。严格设计的随机对照试验有必要证实ZRAS的短期疗效,并探讨其中长期疗效。系统审查注册:(https://www。crd.约克。AC.uk/prospro/display_record.php?RecordID=471497),标识符(CRD42023471497)。
    Background: Natural products are widely used for primary insomnia (PI). This systematic review with trial sequential analysis (TSA) aimed to summarize evidence pertaining to the effectiveness and safety of Zao Ren An Shen (ZRAS) prescription, a commercial Chinese polyherbal preparation, for treating PI. Methods: Controlled clinical trials appraising ZRAS compared to controls or as an add-on treatment were systematically searched across seven databases until January 2024. Cochrane ROB 2.0 and ROBINS-I tools were adopted to determine risk of bias. Quality of evidence was assessed using the GRADE framework. Results: We analyzed 22 studies, involving 2,142 participants. The effect of ZRAS in reducing Pittsburgh Sleep Quality Index scores was found to be comparable to benzodiazepines [MD = 0.39, 95%CI (-0.12, 0.91), p = 0.13] and superior to Z-drugs [MD = -1.31, 95%CI (-2.37, -0.24), p = 0.02]. The addition of ZRAS to hypnotics more significantly reduced polysomnographically-recorded sleep onset latency [MD = -4.44 min, 95%CI (-7.98, -0.91), p = 0.01] and number of awakenings [MD = -0.89 times, 95%CI (-1.67, -0.10), p = 0.03], and increased total sleep time [MD = 40.72 min, 95%CI (25.14, 56.30), p < 0.01], with fewer adverse events than hypnotics alone. TSA validated the robustness of these quantitative synthesis results. However, the quality of evidence ranged from very low to low. The limited data available for follow-up did not support meta-synthesis. Conclusion: While ZRAS prescription shows promising effectiveness in treating PI, the overall quality of evidence is limited. Rigorously-designed randomized control trials are warranted to confirm the short-term efficacy of ZRAS and explore its medium-to-long-term efficacy. Systematic Review Registration: (https://www.crd.york.ac.uk/prospero/display_record.php?RecordID=471497), identifier (CRD42023471497).
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  • 文章类型: Journal Article
    背景和目标:随着微生物对抗生素产生耐药性,自然,植物药或传统草药目前正怀着极大的好奇心和希望被研究。因此,探讨了无并发症盆腔炎(uPID)的补充和替代疗法的疗效。因此,这项研究确定了在标准对照的uPID中使用RosadamascenaMill油对西沙种子的治疗效果和安全性。此外,我们用机器学习分析了数据。材料和方法:我们包括60名双盲参与者,双假人,随机对照研究。芝麻和玫瑰油组(SR组)(n=30)的参与者在睡前接受14天疗程的黑芝麻粉(5gm)与玫瑰油(10mL)混合,每天一次口服安慰剂胶囊。标准组(SC),口服多西环素100mg两次,甲硝唑400mg三次,每次阴道服用安慰剂,持续时间相同。主要结果是下腹痛(LAP)的视觉模拟评分(VAS)干预后的临床治愈,和McCormack疼痛量表(McPS)用于腹部-骨盆压痛。次要结果包括阴道湿装试验中的白细胞(WBC)细胞,安全概况,和通过SF-12评估的健康相关生活质量。此外,我们使用AdaBoost(AB),朴素贝叶斯(NB),和决策树(DT)分类器在这项研究中分析实验数据。结果:在第15天,SRvsSC组中LAP和McPS的临床治愈率分别为82.85%vs81.48%和83.85%vs81.60%。在第15天,SRvsSC组中小于10的脓液细胞分别为86.6%和76.6%。两组均无不良反应。在第30天,SR与SC组的总SF-12评分的改善分别为82.79%与80.04%。此外,我们基于留一模型的朴素贝叶斯分类器对两组uPID的分类均达到了最高准确率(68.30%).结论:我们的结论是SR组具有成本效益,更安全,并有效固化uPID。拟议的替代疗法(测试药物)可以替代用于女性生殖道感染的标准药物。
    Background and objectives: As microbes are developing resistance to antibiotics, natural, botanical drugs or traditional herbal medicine are presently being studied with an eye of great curiosity and hope. Hence, complementary and alternative treatments for uncomplicated pelvic inflammatory disease (uPID) are explored for their efficacy. Therefore, this study determined the therapeutic efficacy and safety of Sesamum indicum Linn seeds with Rosa damascena Mill Oil in uPID with standard control. Additionally, we analyzed the data with machine learning. Materials and methods: We included 60 participants in a double-blind, double-dummy, randomized standard-controlled study. Participants in the Sesame and Rose oil group (SR group) (n = 30) received 14 days course of black sesame powder (5 gm) mixed with rose oil (10 mL) per vaginum at bedtime once daily plus placebo capsules orally. The standard group (SC), received doxycycline 100 mg twice and metronidazole 400 mg thrice orally plus placebo per vaginum for the same duration. The primary outcome was a clinical cure at post-intervention for visual analogue scale (VAS) for lower abdominal pain (LAP), and McCormack pain scale (McPS) for abdominal-pelvic tenderness. The secondary outcome included white blood cells (WBC) cells in the vaginal wet mount test, safety profile, and health-related quality of life assessed by SF-12. In addition, we used AdaBoost (AB), Naïve Bayes (NB), and Decision Tree (DT) classifiers in this study to analyze the experimental data. Results: The clinical cure for LAP and McPS in the SR vs SC group was 82.85% vs 81.48% and 83.85% vs 81.60% on Day 15 respectively. On Day 15, pus cells less than 10 in the SR vs SC group were 86.6% vs 76.6% respectively. No adverse effects were reported in both groups. The improvement in total SF-12 score on Day 30 for the SR vs SC group was 82.79% vs 80.04% respectively. In addition, our Naive Bayes classifier based on the leave-one-out model achieved the maximum accuracy (68.30%) for the classification of both groups of uPID. Conclusion: We concluded that the SR group is cost-effective, safer, and efficacious for curing uPID. Proposed alternative treatment (test drug) could be a substitute of standard drug used for Female genital tract infections.
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  • 文章类型: Journal Article
    尽管近年来心力衰竭的治疗取得了重大进展,慢性心力衰竭仍然是心血管疾病相关死亡的主要原因.许多研究发现,靶向心脏代谢重塑对心力衰竭的治疗具有良好的潜力。然而,大多数增加心脏能量的药物仍处于理论或测试阶段。一些研究发现,植物性药物不仅通过多靶点增加心肌能量代谢,而且具有恢复心肌底物代谢平衡的潜力。在这次审查中,我们总结了植物药(活性成分/配方/中成药)通过激活AMP激活的蛋白激酶(AMPK)来提高底物利用率和促进心肌能量代谢的机制,过氧化物酶体增殖物激活受体(PPARs)和其他相关靶标。同时,植物药对心肌的一些潜在保护作用,如缓解氧化应激和生态失调信号,由代谢紊乱引起的,进行了简要讨论。
    Although there have been significant advances in the treatment of heart failure in recent years, chronic heart failure remains a leading cause of cardiovascular disease-related death. Many studies have found that targeted cardiac metabolic remodeling has good potential for the treatment of heart failure. However, most of the drugs that increase cardiac energy are still in the theoretical or testing stage. Some research has found that botanical drugs not only increase myocardial energy metabolism through multiple targets but also have the potential to restore the balance of myocardial substrate metabolism. In this review, we summarized the mechanisms by which botanical drugs (the active ingredients/formulas/Chinese patent medicines) improve substrate utilization and promote myocardial energy metabolism by activating AMP-activated protein kinase (AMPK), peroxisome proliferator-activated receptors (PPARs) and other related targets. At the same time, some potential protective effects of botanical drugs on myocardium, such as alleviating oxidative stress and dysbiosis signaling, caused by metabolic disorders, were briefly discussed.
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  • 文章类型: Journal Article
    磷酸二酯酶-5抑制剂(PDE5-i)已在临床实践中广泛用于治疗勃起功能障碍(ED)。然而,由于其治疗效果和副作用欠佳,有必要开发新的治疗ED的药物。植物药物作为潜在的ED治疗药物已被广泛研究,并显示出有希望的治疗效果。这篇综述总结了34项研究,包括五种具有PDE5抑制活性的植物药,七种不含PDE5抑制活性的植物药物,和六种混合植物药。本研究总结了有关上述植物药的临床研究结果及相关机制。有必要进行高质量的临床试验来验证剂量,有针对性的患者和治疗效果,还需要进一步的药理学实验来鉴定活性化合物。
    Phosphodiesterase-5 inhibitors (PDE5-i) have been widely used in clinical practice for the treatment of erectile dysfunction (ED). However, due to its suboptimal therapeutic effects and side effects, it is necessary to develop new medicines for ED treatment. Botanical drugs have been widely investigated as potential ED treatment drugs and have shown promising therapeutic effects. This review summarized 34 studies, including five botanical drugs with PDE5 inhibitory activity, seven botanical drugs without PDE5 inhibitory activity, and six mixed botanical drugs. The results of clinical studies regarding the aforementioned botanical drugs and relevant mechanisms are summarized in this study. It is necessary to conduct high-quality clinical trials to verify the dosage, targeted patients and therapeutic effects, and further pharmacology experiments are also needed to identify the active compounds.
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  • 文章类型: Journal Article
    背景:糖脂代谢性疾病在全球范围内的发病率极高,这极大地阻碍了人们的预期寿命和患者的生活质量。氧化应激(OS)加重糖脂代谢疾病的发展。自由基氧(ROS)是OS信号转导的关键因素,可以调节细胞凋亡并促进炎症反应。目前,化疗是治疗糖脂代谢紊乱的主要方法,但这会导致耐药性和对正常器官的损害。植物药是新药的重要来源。它们广泛存在于自然界中,具有可用性,实用性高,和低成本。越来越多的证据表明,草药对糖脂代谢疾病具有明确的治疗作用。目的:本研究旨在从植物性药物对ROS的调控角度,为植物性药物治疗糖脂代谢病提供一种有价值的方法,进一步促进临床治疗糖脂代谢病的有效药物的开发。方法:使用草药*,植物药,中草药,植物化学物质,天然药物,植物医学,植物提取物,植物药,ROS,氧自由基,氧自由基,氧化剂,葡萄糖和脂质代谢,糖代谢,糖代谢,脂质代谢,血糖,脂蛋白,甘油三酯,脂肪肝,动脉粥样硬化,肥胖,糖尿病,血糖异常,NAFLD,和DM作为关键字或主题词,从2013年至2022年的WebofScience和PubMed数据库检索了相关文献并进行了总结.结果:植物性药物可通过调节线粒体功能调节ROS,内质网,磷脂酰肌醇3激酶(PI3K)/蛋白激酶B(AKT),红系2相关因子2(Nrf-2),核因子κB(NF-κB),等信号通路改善OS和治疗糖脂代谢疾病。结论:植物性药物对ROS的调控机制是多方面的。细胞研究和动物实验都证明了植物性药物通过调节ROS治疗糖脂代谢疾病的有效性。然而,关于安全的研究需要进一步改进,需要更多的研究来支持植物药的临床应用。
    Background: The incidence of glycolipid metabolic diseases is extremely high worldwide, which greatly hinders people\'s life expectancy and patients\' quality of life. Oxidative stress (OS) aggravates the development of diseases in glycolipid metabolism. Radical oxygen species (ROS) is a key factor in the signal transduction of OS, which can regulate cell apoptosis and contribute to inflammation. Currently, chemotherapies are the main method to treat disorders of glycolipid metabolism, but this can lead to drug resistance and damage to normal organs. Botanical drugs are an important source of new drugs. They are widely found in nature with availability, high practicality, and low cost. There is increasing evidence that herbal medicine has definite therapeutic effects on glycolipid metabolic diseases. Objective: This study aims to provide a valuable method for the treatment of glycolipid metabolic diseases with botanical drugs from the perspective of ROS regulation by botanical drugs and to further promote the development of effective drugs for the clinical treatment of glycolipid metabolic diseases. Methods: Using herb*, plant medicine, Chinese herbal medicine, phytochemicals, natural medicine, phytomedicine, plant extract, botanical drug, ROS, oxygen free radicals, oxygen radical, oxidizing agent, glucose and lipid metabolism, saccharometabolism, glycometabolism, lipid metabolism, blood glucose, lipoprotein, triglyceride, fatty liver, atherosclerosis, obesity, diabetes, dysglycemia, NAFLD, and DM as keywords or subject terms, relevant literature was retrieved from Web of Science and PubMed databases from 2013 to 2022 and was summarized. Results: Botanical drugs can regulate ROS by regulating mitochondrial function, endoplasmic reticulum, phosphatidylinositol 3 kinase (PI3K)/protein kinase B (AKT), erythroid 2-related factor 2 (Nrf-2), nuclear factor κB (NF-κB), and other signaling pathways to improve OS and treat glucolipid metabolic diseases. Conclusion: The regulation of ROS by botanical drugs is multi-mechanism and multifaceted. Both cell studies and animal experiments have demonstrated the effectiveness of botanical drugs in the treatment of glycolipid metabolic diseases by regulating ROS. However, studies on safety need to be further improved, and more studies are needed to support the clinical application of botanical drugs.
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  • 文章类型: Systematic Review
    目的:系统评价植物性药物治疗胃癌(GC)所致癌因性疲乏(CRF)的疗效和安全性,并采用网络分析确定其潜在的药理机制。方法:中国国家知识基础设施(CNKI)等数据库,SinoMed,万方,Pubmed,Embase,科克伦图书馆,和WebofScience从开始至2022年4月18日的随机对照试验(RCT)进行了检索.方法学质量评估使用协作工具Cochrane,采用RevMan5.4和STATA16软件进行数据分析。选择纳入研究中使用频率最高的植物性药物。化学成分,行动目标,疾病目标,并基于网络分析筛选了这些植物性药物的共享靶点,以探索胃癌(GC)患者治疗CRF的潜在机制。结果:共有13项研究纳入986例胃CRF患者,符合纳入标准。结果表明,植物药能提高胃CRF的CRF评分,包括CRF二分数据的总分[赔率比(OR)=4.22;95%置信区间(CI)1.67-10.68;p=0.002],CRF连续数据的总分[标准化平均差(SMD)=-0.98;95%CI-1.36至-0.60;p<0.00001],Piper疲劳量表(PFS)评分的情感分量表[加权平均差(MD)=-0.79;95CI-0.92至-0.65;p<0.00001],PFS评分的感觉分量表(MD=-0.57;95CI-0.77至-0.37;p<0.00001),PFS得分的行为分量表(MD=-1.05;95%CI-1.29至-0.82;p<0.00001),生活质量问卷核心30(QLQ-C30)(MD=10.53,95%CI8.26至12.80;p<0.00001),和Karnofsky绩效状态量表(KPS)(MD=5.18,95%CI2.60至7.76;p<0.0001)。植物药组的不良反应较对照组轻。从在线数据库共获得44种化学成分和241种潜在靶标,121种药物靶标与GC患者的CRF疾病靶标重叠。此外,五种关键活性成分,也就是槲皮素,豆甾醇,木犀草素,山奈酚,和异鼠李素,以及五个关键靶标,包括AKT1,TP53,TNF,VEGFA,和CASS3进行了筛选。此外,五个关键的信号通路,包括癌症,乙型肝炎,前列腺癌,丙型肝炎,和胰腺癌通路,通过富集分析获得。结论:研究结果表明,植物药对GC患者的CRF具有积极作用。然而,更精心设计,多中心,需要大样本随机对照试验来评估植物药对GC患者CRF的有效性。
    Objective: To systematically review the efficacy and safety of botanical drugs in the treatment of cancer-related fatigue (CRF) caused by gastric cancer (GC) and to determine the underlying pharmacological mechanisms using a network analysis. Methods: Databases such as China National Knowledge Infrastructure (CNKI), SinoMed, Wanfang, Pubmed, Embase, Cochrane Library, and Web of Science were searched for randomized controlled trials (RCTs) from inception to 18 April 2022. Methodological quality assessment was performed using the collaborative tool Cochrane, and data analysis were carried out using RevMan 5.4 and STATA 16 software. The botanical drugs with the highest frequency of use in the included studies was selected. The chemical composition, targets of action, disease targets, and shared targets of these botanical drugs were screened based on network analysis to explore the potential mechanisms of treating CRF in patients with gastric cancer (GC). Results: A total of 13 studies that included 986 patients with gastric CRF met the inclusion criteria. The results showed that botanical drugs could improve the CRF scores of gastric CRF, including the total scores of CRF dichotomous data [Odds Ratio (OR) = 4.22; 95% confidence interval (CI) 1.67-10.68; p = 0.002], the total scores of CRF continuous data [Standardized Mean Difference (SMD) = -0.98; 95% CI -1.36 to -0.60; p < 0.00001], the affective subscales of Piper Fatigue Scale (PFS) scores [Weighted Mean Difference (MD) = -0.79; 95%CI -0.92 to -0.65; p < 0.00001], the sensory subscales of PFS scores (MD = -0.57; 95%CI -0.77 to -0.37; p < 0.00001), the behavioral subscales of PFS scores (MD = -1.05; 95% CI -1.29 to -0.82; p < 0.00001), Quality of Life Questionnaire Core 30 (QLQ-C30) (MD = 10.53, 95% CI 8.26 to12.80; p < 0.00001), and the Karnofsky Performance Status scale (KPS) (MD = 5.18, 95% CI 2.60 to 7.76; p < 0.0001). The botanical drugs group had milder adverse effects than the control group. A total of 44 chemical components and 241 potential targets were obtained from the online database and 121 drug targets overlapped with the disease targets of CRF in patients with GC. Moreover, five key active ingredients, namely quercetin, Stigmasterol, luteolin, kaempferol, and isorhamnetin, as well as five key targets including AKT1, TP53, TNF, VEGFA, and CASP3, were screened. In addition, five key signaling pathways, including cancer, Hepatitis B, Prostate cancer, Hepatitis C, and Pancreatic cancer pathways, were obtained through enrichment analysis. Conclusion: The results of the study showed that botanical drugs have positive effects on CRF in patients with GC. However, more well-designed, multicenter, and large sample-sized Randomized Controlled Trials are required to evaluate the effectiveness of botanical drugs on CRF in patients with GC.
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  • 文章类型: Journal Article
    慢性和未愈合的伤口是一个严重的公共问题,给患者带来严重的经济负担和心理压力。自古以来,中药中的各种植物性药物就被用于伤口的治疗。如今,源自植物药物的多种伤口愈合疗法在世界范围内是市售的。近年来,已经进行了越来越多的研究来阐明伤口愈合活性和植物药的潜在机制。这篇综述的目的是总结中药中具有伤口愈合特性的植物药及其潜在机制。这有助于伤口愈合的研究和药物开发。一起来看,已开发成市售产品的五种植物药,本文综述了24种具有良好伤口愈合活性的植物药和几种中草药制剂。
    Chronic and unhealed wound is a serious public problem, which brings severe economic burdens and psychological pressure to patients. Various botanical drugs in traditional Chinese medicine have been used for the treatment of wounds since ancient time. Nowadays, multiple wound healing therapeutics derived from botanical drugs are commercially available worldwide. An increasing number of investigations have been conducted to elucidate the wound healing activities and the potential mechanisms of botanical drugs in recent years. The aim of this review is to summarize the botanical drugs in traditional Chinese medicine with wound healing properties and the underlying mechanisms of them, which can contribute to the research of wound healing and drug development. Taken together, five botanical drugs that have been developed into commercially available products, and 24 botanical drugs with excellent wound healing activities and several multiherbal preparations are reviewed in this article.
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  • 文章类型: Journal Article
    类风湿性关节炎(RA)是一种以糜烂性关节炎为特征的自身免疫性疾病,这可能涉及多个系统。RA患者可能有多种合并症,包括心血管疾病(CVD),肺癌,淋巴瘤感染,骨质疏松,疲劳,抑郁症,结肠癌,乳腺癌,前列腺癌,和老年痴呆症。在这些合并症中,CVD的发病率,肺癌,淋巴瘤感染,骨质疏松症更高。CVD是RA的严重并发症。RA患者的CVD风险和相关死亡率很高,且治疗率低。除了传统的风险因素,比如年龄,性别,血压,糖尿病,RA也与炎症相关。此外,治疗RA的药物,包括非甾体抗炎药,糖皮质激素,和改善疾病的抗风湿药,对RA患者的心血管事件有有益或有害的影响。本文讨论了RA治疗药物对心血管事件的影响。
    Rheumatoid arthritis (RA) is an autoimmune disease characterized by erosive arthritis, which can involve multiple systems. Patients with RA may have a variety of comorbidities, including cardiovascular disease (CVD), lung cancer, lymphoma, infection, osteoporosis, fatigue, depression, colon cancer, breast cancer, prostate cancer, and Alzheimer\'s disease. Among these comorbidities, the incidence of CVD, lung cancer, lymphoma, infection, and osteoporosis is higher. CVD is a serious complication of RA. The risk of CVD and associated mortality rate in patients with RA is high, and the treatment rate is low. In addition to traditional risk factors, such as age, sex, blood pressure, and diabetes, RA is also associated with inflammation. Furthermore, therapeutic drugs for RA, including non-steroidal anti-inflammatory drugs, glucocorticoids, and disease-modifying anti-rheumatic drugs, have beneficial or harmful effects on cardiovascular events in patients with RA. This article discusses the effects of therapeutic drugs for RA on cardiovascular events.
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  • 文章类型: Journal Article
    小分子的靶标鉴定是药物发现领域的一项重要且仍在变化的工作,特别是植物药的开发。对配体-蛋白质相互作用关系的模糊理解是药物再利用和脱靶鉴定的主要障碍之一。在这项研究中,我们收集了从1月释放的9063个配体结合蛋白的晶体结构,1995年4月,2021年在PDB银行,并将复合物分成5133个配体原子和蛋白质片段(共价连接三个重原子)的相互作用对,原子间距离≤5。相互作用对被分组为配体原子,在每种类型的蛋白质片段周围具有相同的SYBYL原子类型,通过贝叶斯高斯混合模型(BGMM)进一步聚类。配体原子≥20的高斯分布被确定为显着的相互作用模式。通过比较与天然晶体结构具有较高和较低相似性的对接姿势之间的显著相互作用模式的数量差异来验证显著相互作用模式的可靠性。51个候选目标的马钱子碱,士的宁和icajine涉及精液Strychni(MQiánZā)和黄芪甲苷IV的八个候选靶标,通过显着的相互作用模式预测了参与黄芪(HuángQí)的formononetin和calycosin-7-葡萄糖苷,结合对接,这与SemenStrychni和黄芪对癌症和慢性疼痛的治疗效果一致。本研究的新策略提高了小分子靶标鉴定的准确性,这将促进植物药物的发现。
    Target identification of small molecules is an important and still changeling work in the area of drug discovery, especially for botanical drug development. Indistinct understanding of the relationships of ligand-protein interactions is one of the main obstacles for drug repurposing and identification of off-targets. In this study, we collected 9063 crystal structures of ligand-binding proteins released from January, 1995 to April, 2021 in PDB bank, and split the complexes into 5133 interaction pairs of ligand atoms and protein fragments (covalently linked three heavy atoms) with interatomic distance ≤5 Å. The interaction pairs were grouped into ligand atoms with the same SYBYL atom type surrounding each type of protein fragment, which were further clustered via Bayesian Gaussian Mixture Model (BGMM). Gaussian distributions with ligand atoms ≥20 were identified as significant interaction patterns. Reliability of the significant interaction patterns was validated by comparing the difference of number of significant interaction patterns between the docked poses with higher and lower similarity to the native crystal structures. Fifty-one candidate targets of brucine, strychnine and icajine involved in Semen Strychni (Mǎ Qián Zǐ) and eight candidate targets of astragaloside-IV, formononetin and calycosin-7-glucoside involved in Astragalus (Huáng Qí) were predicted by the significant interaction patterns, in combination with docking, which were consistent with the therapeutic effects of Semen Strychni and Astragalus for cancer and chronic pain. The new strategy in this study improves the accuracy of target identification for small molecules, which will facilitate discovery of botanical drugs.
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