pleiotropic effects

多效性效应
  • 文章类型: Journal Article
    双重过滤血浆置换(DFPP)是一种半选择性血液净化方式,源自血浆置换方式。DFPP可用于多种难治性疾病,包括代谢紊乱,器官移植,风湿病,神经系统疾病,和皮肤病。家族性高胆固醇血症和脂蛋白(a)高脂蛋白血症是主要的慢性代谢紊乱。脂蛋白单采术(LA)适用于这些患者,以去除低密度脂蛋白胆固醇(LDL-C)和脂蛋白(a)(Lp(a))。DFPP被用作LA的模态之一。除了去除LDL-C和Lp(a),DFPP具有多效性,如去除脂质代谢相关物质,降低C反应蛋白的作用,去除粘附分子,去除炎性细胞因子,和抗氧化作用。本文根据最近的临床文献总结了DFPP的多效性作用。
    Double filtration plasmapheresis (DFPP) is a semi-selective blood purification modality derived from the plasma exchange modality. DFPP can be applied to a variety of refractory disorders including metabolic disorders, organ transplants, rheumatic disorders, neurological disorders, and dermatologic disorders. Familial hypercholesterolemia and lipoprotein (a) hyperlipoproteinemia are major chronic metabolic disorders. Lipoprotein apheresis (LA) is applied for those patients to remove low-density lipoprotein cholesterol (LDL-C) and lipoprotein (a) (Lp(a)). DFPP is used as one of the modalities in LA. In addition to removing LDL-C and Lp(a), DFPP has pleiotropic effects such as removal of lipid metabolism-related substances, C-reactive protein lowering effect, removal of adhesion molecules, removal of inflammatory cytokines, and anti-oxidative effect. This article summarizes the pleiotropic effects of DFPP based on recent clinical articles.
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  • 文章类型: Journal Article
    背景:根尖周炎(AP)是由牙髓系统的细菌感染引起的炎症性牙科疾病。AP与心血管疾病的相关性。(CVD)一直在研究。他汀类药物是一类用于治疗高胆固醇血症和预防动脉粥样硬化性血管疾病的药物。它们具有其他有益的多效性,如抗炎,抗血栓,和抗氧化活性。这项研究的目的是评估他汀类药物治疗的患者(S组)与未经治疗的患者(C组)的口腔健康状况和AP的患病率,以了解这些药物的抗炎作用是否会影响AP的患病率。
    方法:79名患者的记录(43名男性和36名女性,平均年龄68±11岁,1716颗牙齿)用他汀类药物治疗并转诊到大学诊所进行牙科评估。70例无全身性疾病且未接受治疗的患者(男性39例,女性31例,平均年龄62±9岁,1720颗牙齿)构成了对照组。所有受试者都接受了完整的口腔,牙科,和影像学检查以确定AP的存在和严重程度。根尖指数(PAI)和衰变,missed,并获得填充牙齿(DMFT)评分。
    结果:AP在S组(22,8%)明显少于C组(50%)(P<0.05)。此外,C组AP严重程度的定性等级平均值(PAI评分)高于S组(P≤0.05).
    结论:我们的结果表明,他汀类药物可以降低AP的患病率,与CVD有关。
    BACKGROUND: Apical periodontitis (AP) is an inflammatory dental disease caused by bacterial infections of the endodontic system. The correlation between AP and cardiovascular diseases. (CVD) has been consistently investigated. Statins are a class of drugs that are used to treat hypercholesterolemia and prevent atherosclerotic vascular diseases. They have other beneficial pleiotropic effects such as anti-inflammatory, antithrombotic, and antioxidant activities. The aim of this study was to evaluate the oral health status and prevalence of AP in patients treated with statins (Group S) in comparison with untreated patients (Group C) to understand whether the anti-inflammatory action of these drugs can influence the prevalence of AP.
    METHODS: The records of seventy-nine patients (43 men and 36 women, mean age 68 ± 11 years, 1716 teeth) treated with statins and referred to the University clinic for dental evaluation were reviewed. Seventy patients free from systemic diseases and without therapy (39 men and 31 women, mean age 62 ± 9 years, 1720 teeth) constituted the control group. All subjects underwent complete oral, dental, and radiographic examinations to determine the presence and severity of AP. Periapical index (PAI) and decayed, missed, and filled teeth (DMFT) scores were obtained.
    RESULTS: AP was significantly less common in Group S (22,8%) than in Group C (50%) (P < 0.05). Furthermore, the mean value of the qualitative rank of the severity of AP (PAI score) was higher in Group C than in Group S (P ≤ 0.05).
    CONCLUSIONS: Our results suggest that statins can attenuate the prevalence of AP, which is associated to CVD.
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  • 文章类型: Journal Article
    背景:Tafamidis是一种分子伴侣,可稳定甲状腺素运载蛋白(TTR)同四聚体,防止其解离和随后在器官组织中沉积为淀粉样原纤维。Tafamidis降低了TTR淀粉样蛋白(ATTR)心肌病患者的死亡率和因心血管原因住院的发生率。由于ATTR心肌病与血栓栓塞并发症的高风险相关,我们假设tafamidis可能具有直接的辅助抗血栓作用.
    方法:原代人主动脉内皮细胞(HAECs)用临床相关浓度的tafamidis和患者血浆进行治疗,在开始用tafamidis治疗之前和之后。通过与肿瘤坏死因子α(TNFα)孵育诱导TF的表达。通过蛋白质印迹测量组织因子(TF)的细胞内表达。通过比色测定法测量TF活性。通过定量聚合酶链反应测量TF的基因表达。
    结果:用他法米治疗剂量依赖性地降低了TNFα诱导的TF的表达和活性。在用患者血浆处理的细胞中证实了这种作用。信号转导和转录激活因子3(STAT3)的磷酸化被tafamidis显着抑制。HAECs与tafamidis和STAT3激活剂colivelin的孵育部分挽救了TF的表达。
    结论:用tafamidis治疗通过降低TF表达和活性来降低人原代内皮细胞的血栓形成潜能。这种先前未知的脱靶效应可能为使用tafamidis治疗的ATTR心肌病患者的血栓栓塞并发症数量减少提供了新的机制解释。
    BACKGROUND: Tafamidis is a molecular chaperone that stabilizes the transthyretin (TTR) homo-tetramer, preventing its dissociation and consequent deposition as amyloid fibrils in organ tissues. Tafamidis reduces mortality and the incidence of hospitalization for cardiovascular causes in patients with TTR amyloid (ATTR) cardiomyopathy. As ATTR cardiomyopathy is associated with a high risk of thromboembolic complications, we hypothesized that tafamidis may have a direct ancillary anti-thrombotic effect.
    METHODS: Primary human aortic endothelial cells (HAECs) were treated with tafamidis at clinically relevant concentrations and with plasma of patients, before and after the initiation of treatment with tafamidis. The expression of TF was induced by incubation with Tumor Necrosis Factor α (TNFα). Intracellular expression of tissue factor (TF) was measured by western blot. TF activity was measured by a colorimetric assay. Gene expressions of TF were measured by quantitative polymerase chain reaction.
    RESULTS: Treatment with tafamidis dose-dependently reduced the expression and activity of TNFα-induced TF. This effect was confirmed in cells treated with patients\' plasma. Signal Transducer and Activator of Transcription 3 (STAT3) phosphorylation was significantly inhibited by tafamidis. Incubation of HAECs with tafamidis and the STAT3 activator colivelin partially rescued the expression of TF.
    CONCLUSIONS: Treatment with tafamidis lowers the thrombotic potential in human primary endothelial cells by reducing TF expression and activity. This previously unknown off-target effect may provide a novel mechanistic explanation for the lower number of thromboembolic complications in ATTR cardiomyopathy patients treated with tafamidis.
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  • 文章类型: Journal Article
    在这个实验中,我们研究了一个啮齿动物模型,该模型选择了57代以上,在母系分离期间,超声发声(USV)的发生率高或低。我们调查了这种繁殖对成年动物随后的声音输出的影响,比较不同发育阶段的声学变量。我们假设幼犬USV率的选择会影响成年USV的产生,而不会影响低频呼叫。与这个假设相反,我们发现在选定的成人行之间,USV呼叫数或其他声学变量均无差异.相反,我们发现幼犬USV选择主要影响成人的低频(人类可听到的)呼叫。此外,低频发声并不完全符合体重和基频之间的预测相关性:高线男性,虽然平均来说最重,没有产生最低的基本频率。我们的发现表明,多向性选择早期超声发声行为会导致解剖产生机制和/或神经控制的变化,从而影响低频呼叫。
    In this experiment, we studied a rodent model selected over 57 generations for high or low rates of ultrasonic vocalizations (USVs) during maternal separation as pups. We investigated the influence of this breeding on the adult animals\' subsequent vocal output, comparing acoustic variables across developmental stages. We hypothesized that selection on pup USV rate would impact adult USV production without affecting lower frequency calls. Contrary to this hypothesis, we found neither number of USV calls or other acoustic variables to differ among selected adult lines. Instead, we found that pup USV selection mainly affected adults\' low-frequency (human-audible) calls. Furthermore, low-frequency vocalizations did not fully fit a predicted correlation between body weight and fundamental frequency: high line males, although the heaviest on average, did not produce the lowest fundamental frequencies. Our findings suggest that selection for early ultrasonic vocal behaviour pleiotropically results in changes in anatomical production mechanisms and/or neural control affecting low-frequency calls.
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  • 文章类型: Journal Article
    直接口服抗凝剂(DOAC)是房颤(AF)患者血栓栓塞保护的标准治疗方法。表观遗传修饰,如DNA甲基化和microRNAs,已经成为房颤的潜在生物标志物。DOAC的表观遗传学仍然是一个研究不足的领域。表观遗传修饰是否干扰DOAC反应或DOAC治疗是否诱导表观遗传修饰在很大程度上是未知的。为了填补这个空白,我们开始了miR-CRAFT(循环微小RNA和DNA甲基化作为心房颤动中直接口服抗凝反应的调节因子)研究.在miR-CRAFT中,我们跟随,随着时间的推移,开始DOAC治疗的初始AF患者DNA甲基化和microRNAs表达的变化。miR-CRAFT的最终目标是鉴定受DOAC表观遗传影响的分子途径,除了凝血级联,它们可能介导DOAC多效作用,并提出特定的microRNA作为DOAC治疗监测的新型循环生物标志物。我们在此描述了研究设计,并简要介绍了参与者注册的进展。
    Direct oral anticoagulants (DOACs) are the standard treatment for thromboembolic protection in atrial fibrillation (AF) patients. Epigenetic modifications, such as DNA methylation and microRNAs, have emerged as potential biomarkers of AF. The epigenetics of DOACs is still an understudied field. It is largely unknown whether epigenetic modifications interfere with DOAC response or whether DOAC treatment induces epigenetic modifications. To fill this gap, we started the miR-CRAFT (Circulating microRNAs and DNA methylation as regulators of Direct Oral Anticoagulant Response in Atrial Fibrillation) research study. In miR-CRAFT, we follow, over time, changes in DNA methylation and microRNAs expression in naïve AF patients starting DOAC treatment. The ultimate goal of miR-CRAFT is to identify the molecular pathways epigenetically affected by DOACs, beyond the coagulation cascade, that are potentially mediating DOAC pleiotropic actions and to propose specific microRNAs as novel circulating biomarkers for DOAC therapy monitoring. We herein describe the study design and briefly present the progress in participant enrolment.
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  • 文章类型: Journal Article
    在急性冠状动脉综合征(ACS)期间降低心率(HR)是有益的,因为其减少心肌耗氧量。然而,伊伐布雷定作为降低HR的药物在ACS患者中的作用尚不清楚.我们旨在系统地回顾和综合目前关于伊伐布雷定在ACS中作用的证据。对符合条件的随机临床试验和准实验研究进行了系统评价,2009年至2020年,调查了伊伐布雷定在ACS中的使用情况。评估各种临床终点,如主要不良心血管事件,在HR控制中的功效,对左心室(LV)尺寸和功能的影响,和整体安全。包括11篇出版物,共1833名患者。受检队列的平均年龄为57±11岁,80%为男性。七项研究是在ST段抬高型心肌梗死(MI)的背景下进行的,而其余研究还包括不稳定型心绞痛和非ST段抬高型MI的患者。伊伐布雷定作为口服药物给药,剂量为2.5至7.5mgb.i.d。在HR控制方面,加用伊伐布雷定优于对照组,安全性良好.还观察到对LV功能的有益影响和对梗死面积减小的潜在影响。伊伐布雷定的使用似乎不影响短期死亡率。总之,使用伊伐布雷定进行HR控制是安全的,可行,对ACS中的HR控制有效。需要进一步的研究来阐明伊伐布雷定的其他潜在有益作用。
    Heart rate (HR) lowering during acute coronary syndrome (ACS) is beneficial as it reduces myocardial oxygen consumption. However, the role of ivabradine as an HR-lowering agent in the setting of ACS is not clear. We aimed to systematically review and synthesize the current evidence on the role of ivabradine use in the ACS. A systematic review was conducted for eligible randomized clinical trials and quasi-experimental studies, between 2009 and 2020, that investigated the use of ivabradine in ACS. Various clinical endpoints were evaluated such as major adverse cardiovascular events, efficacy in HR control, impact on left ventricular (LV) dimensions and function, and overall safety. Eleven publications were included encompassing a total of 1833 patients. The mean age of the examined cohort was 57 ± 11 years and 80 % were men. Seven studies were in the setting of ST-segment elevation myocardial infarction (MI) while the remaining studies also included patients with unstable angina and non-ST-segment elevation MI. Ivabradine was administered as a peroral drug with dosing from 2.5 to 7.5 mg b.i.d. Overall, the addition of ivabradine was superior to the control arm concerning HR control with a good safety profile. Beneficial effects on LV function and potential impact on infarct size reduction were observed as well. The use of ivabradine appeared to not affect short-term mortality. In conclusion, the use of ivabradine for HR control is safe, feasible, and efficacious for HR control in the ACS. Further studies are required to elucidate other potentially beneficial effects of ivabradine.
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  • 文章类型: Journal Article
    褪黑素是植物中普遍存在的调节因子,具有多种生理作用,包括对非生物胁迫的抗性,生长和发育的调节,增强植物免疫力。褪黑激素具有植物激素的多效性,生物合成,共轭,分解代谢,有效浓度,以及其剂量反应曲线的形状和位置。此外,CAND2/PMTR1,一种属于G蛋白偶联受体(GPCRs)的植物褪黑素受体候选物,支持褪黑激素作为植物激素的概念。然而,植物褪黑素受体的生物化学需要进一步表征。特别是,迄今为止的一些实验结果不能用已知的GPCR信号机制来解释,因此,需要进一步的研究来探索新的信号机制的可能性。
    Melatonin is a ubiquitous regulator in plants and performs a variety of physiological roles, including resistance to abiotic stress, regulation of growth and development, and enhancement of plant immunity. Melatonin exhibits the characteristics of a phytohormone with its pleiotropic effects, biosynthesis, conjugation, catabolism, effective concentration, and the shape and location of its dose-response curves. In addition, CAND2/PMTR1, a phytomelatonin receptor candidate belonging to the G protein-coupled receptors (GPCRs), supports the concept of melatonin as a phytohormone. However, the biochemistry of plant melatonin receptors needs to be further characterized. In particular, some of the experimental findings to date cannot be explained by known GPCR signaling mechanisms, so further studies are needed to explore the possibility of novel signaling mechanisms.
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  • 文章类型: Journal Article
    这篇综述在更广泛的心血管健康背景下,全面探索了他汀类药物与卒中预防之间的复杂关系。深入研究他汀类药物的作用机制,我们阐明了他们多方面的贡献,从降低胆固醇到对血管系统的多效性作用。通过对临床试验的细致分析,观察性研究,和机械调查,我们强调了他汀类药物作为预防卒中和相关心血管事件的重要组成部分的关键作用.其影响超出了他汀类药物作为独立干预措施的范围,强调协同整合到更广泛的卒中预防策略的潜力。针对个体患者概况定制干预措施并理解与生活方式改变和其他药理学方法的相互作用为优化功效提供了机会。对未来研究的建议提倡继续探索他汀类药物治疗的长期效果,新颖的干预组合,和完善的预测模型,用于个性化风险评估。在实际层面上,加强患者教育,促进跨学科合作,解决药物依从性的障碍成为现实世界影响的关键方面。在导航这个不断变化的景观时,从这篇综述中得出的见解有助于预防性心血管医学的知情决策和进步.
    This review provides a comprehensive exploration of the intricate relationship between statins and stroke prevention within the broader context of cardiovascular health. Delving into the mechanisms of statins, we elucidate their multifaceted contributions, ranging from cholesterol reduction to pleiotropic effects on the vascular system. Through a meticulous analysis of clinical trials, observational studies, and mechanistic investigations, we underscore the pivotal role of statins as integral components in the arsenal against strokes and associated cardiovascular events. The implications extend beyond statins as standalone interventions, emphasizing the potential for synergistic integration into broader stroke prevention strategies. Tailoring interventions to individual patient profiles and understanding the interplay with lifestyle modifications and other pharmacological approaches present opportunities for optimizing efficacy. Recommendations for future research advocate for continued exploration into the long-term effects of statin therapy, novel intervention combinations, and refined predictive models for personalized risk assessment. On a practical level, enhancing patient education, fostering interdisciplinary collaboration, and addressing barriers to medication adherence emerge as crucial aspects for real-world impact. In navigating this evolving landscape, the insights derived from this review contribute to informed decision-making and advancements in preventive cardiovascular medicine.
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  • 文章类型: Journal Article
    HMG-CoA还原酶抑制剂,通常被称为他汀类药物,是心血管疾病的主要治疗选择,这是全球主要的死亡原因。他汀类药物还提供各种多效作用,包括改善内皮功能,抗炎特性,减少氧化应激,抗血栓作用,和动脉粥样硬化斑块的稳定。然而,他汀类药物的使用可能伴随着一系列的不良反应,例如2型糖尿病的发展,肌肉症状,肝毒性,肾脏疾病,白内障,出血性中风,和精神并发症。这些问题被称为他汀类药物相关症状(SAS),在临床试验中相对罕见。这使得将它们归因于他汀类药物的使用成为挑战。因此,这些症状会导致严重的问题,需要调整剂量或停止他汀类药物治疗。这篇综述旨在全面概述行动机制,潜在优势,以及在临床环境中使用他汀类药物的相关风险。
    HMG-CoA reductase inhibitors, commonly known as statins, are the primary treatment choice for cardiovascular diseases, which stand as the leading global cause of mortality. Statins also offer various pleiotropic effects, including improved endothelial function, anti-inflammatory properties, reduced oxidative stress, anti-thrombotic effects, and the stabilization of atherosclerotic plaques. However, the usage of statins can be accompanied by a range of adverse effects, such as the development of type 2 diabetes mellitus, muscular symptoms, liver toxicity, kidney diseases, cataracts, hemorrhagic strokes, and psychiatric complications. These issues are referred to as statin-associated symptoms (SAS) and are relatively infrequent in clinical trials, making it challenging to attribute them to statin use definitively. Therefore, these symptoms can lead to significant problems, necessitating dose adjustments or discontinuation of statin therapy. This review aims to provide a comprehensive overview of the mechanism of action, potential advantages, and associated risks of statin utilization in clinical settings.
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  • 文章类型: Journal Article
    直接口服抗凝剂(DOAC)简化了血栓栓塞性疾病的治疗。除了其既定的抗凝作用,有迹象表明,从临床和临床前研究,DOAC也表现出非抗凝作用,如抗炎和抗氧化作用,提倡全面的心血管保护。在本研究中,我们提供了关于DOAC在体外对内皮细胞(ECs)的多效性作用及其潜在机制的现有知识的全面概述,同时还确定DOAC之间的潜在差异。DOAC对EC表现出多效性作用,如抗炎,抗动脉粥样硬化,和抗纤维化作用,以及保存内皮完整性。这些作用似乎是通过抑制蛋白酶激活的受体信号传导途径介导的。此外,我们讨论了这四种药物之间的潜在差异。需要进一步的研究来充分了解DOAC对EC的多效性作用,它们的潜在机制,以及各种DOAC之间的异质性。这样的研究可以为识别生物标志物铺平道路,这些生物标志物可以帮助使用这种有价值的药物进行个性化的药物治疗。
    Direct Oral Anticoagulants (DOACs) have simplified the treatment of thromboembolic disease. In addition to their established anticoagulant effects, there are indications from clinical and preclinical studies that DOACs exhibit also non-anticoagulant actions, such as anti-inflammatory and anti-oxidant actions, advocating overall cardiovascular protection. In the present study, we provide a comprehensive overview of the existing knowledge on the pleiotropic effects of DOACs on endothelial cells (ECs) in vitro and their underlying mechanisms, while also identifying potential differences among DOACs. DOACs exhibit pleiotropic actions on ECs, such as anti-inflammatory, anti-atherosclerotic, and anti-fibrotic effects, as well as preservation of endothelial integrity. These effects appear to be mediated through inhibition of the proteinase-activated receptor signaling pathway. Furthermore, we discuss the potential differences among the four drugs in this class. Further research is needed to fully understand the pleiotropic effects of DOACs on ECs, their underlying mechanisms, as well as the heterogeneity between various DOACs. Such studies can pave the way for identifying biomarkers that can help personalize pharmacotherapy with this valuable class of drugs.
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