mechanism of action

作用机制
  • 文章类型: Journal Article
    化疗是目前临床肿瘤治疗中最有效的方法之一。然而,化疗耐药是化疗疗效和预后差的重要原因,成为肿瘤化疗领域亟待解决的问题。因此,因此,深入研究和分析肿瘤化疗耐药的机制及其调控因素具有十分重要的意义。长非编码RNA核旁斑组装转录物1(LncRNANEAT1)已被证明与癌症中的化疗抗性密切相关。NEAT1通过调节细胞凋亡诱导癌细胞对化疗药物的耐药性,细胞周期,药物运输和代谢,DNA损伤修复,EMT,自噬,肿瘤干细胞特性,和代谢重编程。这表明NEAT1可能是克服化疗耐药的重要靶点,有望成为预测化疗效果的潜在生物标志物。本文就NEAT1在不同肿瘤中的表达特点及临床特点作一综述。并深入探讨了NEAT1在肿瘤化疗耐药中的调节作用及相关分子机制,旨在阐明NEAT1作为克服癌症化疗耐药的新靶点和化疗增敏剂的可行性,以期为今后克服癌症耐药困境提供潜在的治疗方向。
    Chemotherapy is currently one of the most effective methods in clinical cancer treatment. However, chemotherapy resistance is an important reason for poor chemotherapy efficacy and prognosis, which has become an urgent problem to be solved in the field of cancer chemotherapy. Therefore, it is very important to deeply study and analyze the mechanism of cancer chemotherapy resistance and its regulatory factors. Long non-coding RNA nuclear paraspeckle assembly transcript 1 (LncRNA NEAT1) has been shown to be closely associated with chemotherapy resistance in cancer. NEAT1 induces cancer cell resistance to chemotherapeutic drugs by regulating cell apoptosis, cell cycle, drug transport and metabolism, DNA damage repair, EMT, autophagy, cancer stem cell characteristics, and metabolic reprogramming. This indicates that NEAT1 may be an important target to overcome chemotherapy resistance and is expected to be a potential biomarker to predict the effect of chemotherapy. This article summarizes the expression characteristics and clinical characteristics of NEAT1 in different cancers, and deeply discusses the regulatory role of NEAT1 in cancer chemotherapy resistance and related molecular mechanisms, aiming to clarify NEAT1 as a new target to overcome cancer chemotherapy resistance and the feasibility of chemotherapy sensitizers, with a view to providing a potential therapeutic direction for overcoming the dilemma of cancer resistance in the future.
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  • 文章类型: Journal Article
    埃及伊蚊和白纹伊蚊是登革热等虫媒病毒的主要载体,基孔肯雅和寨卡,对全球经济和公共卫生造成重大影响。预防这些疾病的主要方法是病媒控制,这是通过物理和生物方法进行的,除了环境管理。虽然化学杀虫剂是最有效的策略,它们提出了一些问题,如媒介抗性和生态毒性。最近的研究强调了咪唑鎓盐“1-甲基-3-十八烷基咪唑鎓氯化物”(C18MImCl)作为针对Ae的创新和环保解决方案的潜力。埃及伊蚊.尽管它有很好的杀幼虫活动,C18MImCl在蚊子细胞和组织中的作用方式仍然未知。本研究旨在探讨其对Ae的影响。埃及伊蚊幼虫和Ae的三个细胞系。埃及伊蚊和Ae.白纹,将细胞效应与对人类细胞的影响进行比较。对处理的幼虫进行细胞活力测定和组织病理学分析。结果表明,咪唑盐对蚊子细胞的选择性比人类细胞高(>254)。食盐后,幼虫死亡的机制涉及对中肠细胞的毒性作用。这项研究首次描述了咪唑盐对蚊子细胞和中肠组织的作用,展示其在制定有选择和可持续的病媒控制战略方面的潜力。
    Aedes aegypti and Aedes albopictus are the main vectors of arboviruses such as Dengue, Chikungunya and Zika, causing a major impact on global economic and public health. The main way to prevent these diseases is vector control, which is carried out through physical and biological methods, in addition to environmental management. Although chemical insecticides are the most effective strategy, they present some problems such as vector resistance and ecotoxicity. Recent research highlights the potential of the imidazolium salt \"1-methyl-3-octadecylimidazolium chloride\" (C18MImCl) as an innovative and environmentally friendly solution against Ae. aegypti. Despite its promising larvicidal activity, the mode of action of C18MImCl in mosquito cells and tissues remains unknown. This study aimed to investigate its impacts on Ae. aegypti larvae and three cell lines of Ae. aegypti and Ae. albopictus, comparing the cellular effects with those on human cells. Cell viability assays and histopathological analyses of treated larvae were conducted. Results revealed the imidazolium salt\'s high selectivity (> 254) for mosquito cells over human cells. After salt ingestion, the mechanism of larval death involves toxic effects on midgut cells. This research marks the first description of an imidazolium salt\'s action on mosquito cells and midgut tissues, showcasing its potential for the development of a selective and sustainable strategy for vector control.
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  • 文章类型: Journal Article
    柴胡皂苷D,一种皂苷化合物,是从柴胡中提取的,是该植物的主要活性成分。它具有多种药理作用,包括抗炎,抗氧化剂,免疫调节,新陈代谢,和抗肿瘤特性,近年来在抗肿瘤研究中引起了极大的关注。研究表明柴胡皂苷D抑制多种肿瘤细胞的增殖,抑制肝癌等癌症的进展,胰腺,肺,神经胶质瘤,卵巢,甲状腺,胃,和乳腺癌。其抗肿瘤机制主要涉及抑制肿瘤细胞增殖,促进肿瘤细胞凋亡,阻止肿瘤细胞侵袭,和调节肿瘤细胞自噬。此外,柴胡皂苷D可增强对抗肿瘤药物的敏感性并增强机体免疫力。鉴于其多方面的抗肿瘤作用,柴胡皂苷D在抗肿瘤治疗中具有广阔的潜力。本文综述了近年来关于其抗肿瘤作用的研究,旨在为临床癌症治疗提供新的理论见解。
    Saikosaponin D, a saponin compound, is extracted from Bupleurum and is a principal active component of the plant. It boasts a variety of pharmacologic effects including anti-inflammatory, antioxidant, immunomodulatory, metabolic, and anti-tumor properties, drawing significant attention in anti-tumor research in recent years. Research indicates that saikosaponin D inhibits the proliferation of numerous tumor cells, curbing the progression of cancers such as liver, pancreatic, lung, glioma, ovarian, thyroid, stomach, and breast cancer. Its anti-tumor mechanisms largely involve inhibiting tumor cell proliferation, promoting tumor cell apoptosis, thwarting tumor-cell invasion, and modulating tumor cell autophagy. Moreover, saikosaponin D enhances the sensitivity to anti-tumor drugs and augments body immunity. Given its multi-faceted anti-tumor roles, saikosaponin D offers promising potential in anti-tumor therapy. This paper reviews recent studies on its anti-tumor effects, aiming to furnish new theoretical insights for clinical cancer treatments.
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  • 文章类型: Journal Article
    皮肤,作为人体最大的器官,在保护身体免受侵入性病原体的侵害中起着关键作用。因此,加强和保护这个重要器官至关重要。目前的研究支持益生菌对皮肤健康的影响及其缓解各种皮肤疾病的能力。然而,益生菌在皮肤护理中的有效性和可能的副作用仍然是争论的话题,需要进一步调查和分析。因此,这项研究旨在强调当前皮肤护理益生菌研究中存在的差距和未来的需求,并为未来的研究铺平道路。因此,我们仔细研究了口服(发酵食品和膳食补充剂)和非口服/局部益生菌对皮肤护理的影响,以及益生菌影响皮肤健康的机制。大多数研究结果表明,含有益生菌的发酵食品,特别是乳制品,积极影响皮肤健康。关于益生菌补充剂和活菌株在治疗皮肤病中的功效的研究结果显示出有希望的潜力。然而,安全评估至关重要,识别任何潜在的不利影响。虽然研究已经确定了许多益生菌可能影响皮肤健康的潜在机制,对他们精确的行动方式的完整理解仍然难以捉摸。然而,似乎益生菌可以通过人体的肠道-皮肤和肠道-皮肤-大脑轴发挥积极作用。因此,在确定了安全的益生菌之后,应进行额外的研究以确定最佳剂量,潜在的副作用,适当的监管准则,和验证方法。
    The skin, being the largest organ in the human body, plays a pivotal role in safeguarding the body against invasive pathogens. Therefore, it is essential to reinforce and protect this vital organ. Current research supports the impact of probiotics on skin health and their ability to alleviate various skin disorders. However, the effectiveness and probable side effects of probiotics in skin care remain a subject of debate, necessitating further investigation and analysis. Hence, this study aims to highlight existing gaps and future needs in the current research on probiotics in skin care and pave the way for future investigations. Therefore, we scrutinized the effects of oral (fermented foods and dietary supplements) and non-oral/topical probiotics on skin care, and the mechanism of probiotics that affect skin health. The results of most studies showed that fermented foods containing probiotics, particularly dairy products, positively impact skin health. The research results regarding the efficacy of probiotic supplements and live strains in treating skin disorders show promising potential. However, safety evaluations are crucial, to identify any potential adverse effects. While research has identified numerous potential mechanisms by which probiotics may influence skin health, a complete understanding of their precise mode of action remains elusive. However, it seems that probiotics can exert their positive effects through the gut-skin and gut-skin-brain axis on the human body. Therefore, following the identification of safe probiotics, additional studies should be carried out to establish optimal dosages, potential side effects, suitable regulatory guidelines, and validation methods.
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  • 文章类型: Journal Article
    Brominated flame retardants (BFRs) are a kind of brominated compounds widely used in electronic and electrical appliances, textiles, construction materials and other industrial products to improve the flame retardant property. Because of its strong chemical stability, environmental persistence, long-distance transmission, biological accumulation, the exposure of humans and organisms in the ecosystem is increasing, and its potential biological effects are of great concern. Now BFRs can be detected in breast milk, serum, placenta and cord blood. Studies have shown that exposure to BFRs during pregnancy can lead to adverse birth outcomes such as low birth weight, malformation, gestational age changes and impairment of neurobehavioral development. This article summarizes the pollution and population exposure of three traditional BFRs, polybrominated diphenyl ethers (PBDEs), hexabromocyclododecane (HBCD), and tetrabromobisphenol A (TBBPA), as well as the impact and mechanism of prenatal exposure on offspring birth outcomes and growth and development. It explores the harm of prenatal exposure to BFRs to offspring and proposes preventive measures for occupational populations for reference.
    溴系阻燃剂(brominated flame retardants,BFRs)是一类广泛用于电子电器、纺织、建筑材料等工业产品以提升阻燃性能的含溴化合物。由于其化学稳定性强,具有环境持久性、远距离传播性和生物蓄积性,目前母乳、血清及胎盘、脐带血中均可检测到BFRs。研究表明孕期暴露BFRs与多种不良出生结局如低体重、畸形、胎龄改变、神经行为发育损害有关。本文总结了三大传统BFRs,多溴二苯醚、六溴环十二烷、四溴双酚A的污染与人群暴露情况、孕期暴露对子代出生结局、生长发育的影响及作用机制,对BFRs孕期暴露对子代的危害进行探讨,为职业人群的预防措施提供参考。.
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  • 文章类型: Journal Article
    特发性肺纤维化(IPF)是一种病因不明的慢性间质性肺病。目前,在临床实践中用于治疗IPF的药物表现出严重的副作用和局限性。为了解决这些问题,本文讨论了临床前靶向药物(如STAT3和TGF-β/Smad通路抑制剂,几丁质酶抑制剂,PI3K和磷酸二酯酶抑制剂,等。)和IPF上的天然产物。通过对当前研究进展的总结,发现天然产物具有多目标效应,稳定的治疗效果,副作用低,和非药物依赖。此外,我们讨论了天然产物分子通过影响免疫系统来对抗纤维化的重要前景,预计当前的分析数据将有助于新药的开发或天然产品中的活性成分的研究,以在未来潜在的IPF治疗。
    Idiopathic pulmonary fibrosis (IPF) is a chronic interstitial lung disease of unknown etiology. Currently, drugs used to treat IPF in clinical practice exhibit severe side effects and limitations. To address these issues, this paper discusses the therapeutic effects of preclinical targeted drugs (such as STAT3 and TGF-β/Smad pathway inhibitors, chitinase inhibitors, PI3K and phosphodiesterase inhibitors, etc.) and natural products on IPF. Through a summary of current research progress, it is found that natural products possess multitarget effects, stable therapeutic efficacy, low side effects, and nondrug dependence. Furthermore, we discuss the significant prospects of natural product molecules in combating fibrosis by influencing the immune system, expecting that current analytical data will aid in the development of new drugs or the investigation of active ingredients in natural products for potential IPF treatments in the future.
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  • 文章类型: Journal Article
    总结了解常用的化学杀菌剂如何影响病原微生物对于杀菌剂的配制很重要。本文综述了常用于感染预防和控制的化学杀微生物剂的作用机制。与抗生素的典型位点特异性作用模式相反,杀微生物剂通常通过多个目标起作用,对微生物造成快速和不可逆的损害。在病毒的情况下,包膜或蛋白衣壳通常是主要的结构靶标,导致衣壳中的包膜完整性丧失或蛋白质变性,导致宿主细胞受体的受体结合域丢失,和/或其他病毒蛋白或核酸的分解。然而,对于某些杀病毒杀菌剂,核酸可以是重要的作用位点。对蛋白质或核酸的初级损伤区域是位点特异性的,并且可以随病毒类型而变化。由于它们更大的复杂性和新陈代谢,细菌和真菌提供了更多的目标。对微生物的快速和不可逆的损害可能是由于脂质成分的溶解和涉及营养素运输的酶的变性。配制攻击微生物多个位点的杀微生物活性物质,或控制pH值,添加防腐剂或增效剂,等等,可以增加针对病原体的作用谱并且减少实现针对目标病原体的杀微生物活性所需的浓度和时间。
    SUMMARYUnderstanding how commonly used chemical microbicides affect pathogenic microorganisms is important for formulation of microbicides. This review focuses on the mechanism(s) of action of chemical microbicides commonly used in infection prevention and control. Contrary to the typical site-specific mode of action of antibiotics, microbicides often act via multiple targets, causing rapid and irreversible damage to microbes. In the case of viruses, the envelope or protein capsid is usually the primary structural target, resulting in loss of envelope integrity or denaturation of proteins in the capsid, causing loss of the receptor-binding domain for host cell receptors, and/or breakdown of other viral proteins or nucleic acids. However, for certain virucidal microbicides, the nucleic acid may be a significant site of action. The region of primary damage to the protein or nucleic acid is site-specific and may vary with the virus type. Due to their greater complexity and metabolism, bacteria and fungi offer more targets. The rapid and irreversible damage to microbes may result from solubilization of lipid components and denaturation of enzymes involved in the transport of nutrients. Formulation of microbicidal actives that attack multiple sites on microbes, or control of the pH, addition of preservatives or potentiators, and so on, can increase the spectrum of action against pathogens and reduce both the concentrations and times needed to achieve microbicidal activity against the target pathogens.
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  • 文章类型: Journal Article
    近年来,越来越多的研究证实,肠道菌群在维持人类健康和疾病方面发挥着重要作用。肠道微生物群失衡可导致许多疾病的发展,如妊娠并发症,不良妊娠结局,多囊卵巢综合征,子宫内膜异位症,和癌症。短链脂肪酸是特定肠道细菌的代谢产物,对于维持肠道稳态以及调节代谢和免疫力至关重要。子宫内膜异位症是细胞增殖的结果,逃避免疫监视,和侵袭性转移。肠道微生物产生的短链脂肪酸的抗增殖和抗炎作用与子宫内膜异位症的发展之间存在很强的相关性。鉴于肠道菌群和短链脂肪酸在子宫内膜异位症中的作用机制尚不清楚,本文旨在全面综述肠道菌群之间的复杂相互作用,短链脂肪酸和子宫内膜异位症。此外,我们探讨了子宫内膜异位症的潜在微生物治疗策略,为子宫内膜异位症的诊断和预防治疗方法的未来发展提供新的见解。
    In recent years, a growing body of research has confirmed that the gut microbiota plays a major role in the maintenance of human health and disease. A gut microbiota imbalance can lead to the development of many diseases, such as pregnancy complications, adverse pregnancy outcomes, polycystic ovary syndrome, endometriosis, and cancer. Short-chain fatty acids are metabolites of specific intestinal bacteria and are crucial for maintaining intestinal homeostasis and regulating metabolism and immunity. Endometriosis is the result of cell proliferation, escape from immune surveillance, and invasive metastasis. There is a strong correlation between the anti-proliferative and anti-inflammatory effects of short-chain fatty acids produced by gut microbes and the development of endometriosis. Given that the mechanism of action of gut microbiota and Short-chain fatty acids in endometriosis remain unclear, this paper aims to provide a comprehensive review of the complex interactions between intestinal flora, short-chain fatty acids and endometriosis. In addition, we explored potential microbial-based treatment strategies for endometriosis, providing new insights into the future development of diagnostic tests and prevention and treatment methods for endometriosis.
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  • 文章类型: Journal Article
    Slow wound healing has been a troublesome problem in clinic. In China, traditional methods such as antibiotics and silver sulfadiazine are used to treat skin wound, but the abuse use has many disadvantages, such as chronic wounds and pathogen resistance. Studies have shown that the microorganisms with symbiotic relationship with organisms have benefits on skin wound. Therefore, the way to develop and utilize probiotics to promote wound healing has become a new research direction. In this paper, we reviewed the studies on the bacteriotherapy in the world, described how the probiotics can play a role in promoting wound healing through local wound and intestine, and introduced some mature probiotics products and clinical trials, aiming to provide foundations for further development of bacteriotherapy and products.
    伤口愈合缓慢是目前临床上较为棘手的问题,国内多采用抗生素和磺胺嘧啶银等较为传统的方法来治疗皮肤伤口,但其不恰当的使用存在诸多弊端,如导致伤口的慢性化和病原体的耐药性等。有研究表明,与机体存在共生关系的微生物可对皮肤伤口产生有益影响,因此如何开发并利用益生菌来促进伤口愈合已然成为了一项新的研究方向。本文根据国内外有关益生菌疗法的相关文献,阐述了益生菌是如何通过局部伤口和肠道来发挥其促愈合作用的,并且还提到了部分相对成熟的益生菌产品和临床试验,旨在为国内进一步开展益生菌疗法及其产品研发提供相关依据。.
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  • 文章类型: Journal Article
    对抗生素耐药性的理解,我们这个时代的主要健康威胁之一,主要是基于过时和不完整的概念,尤其是在临床环境中。抗生素的“规范”作用机制和药效学,以及用于评估它们对细菌的活性的方法,几十年来没有改变;这同样适用于定义,收购,选择性压力,和抵抗的驱动力。因此,改善抗生素使用和克服耐药性的策略最终失败了.这篇综述收集了大多数关于抗生素和耐药性的“非规范”概念:从抗生素的替代作用机制和敏感性测试的局限性到各种选择压力,横向基因转移机制,无处不在,和维持抵抗力的社会因素。只有对问题有“全局”的看法,才能设计出适当的策略来利用阻力。这些战略必须是全球性的,除了抗生素的临床使用外,还解决了导致耐药细菌日益流行的许多方面。
    The understanding of antibiotic resistance, one of the major health threats of our time, is mostly based on dated and incomplete notions, especially in clinical contexts. The \"canonical\" mechanisms of action and pharmacodynamics of antibiotics, as well as the methods used to assess their activity upon bacteria, have not changed in decades; the same applies to the definition, acquisition, selective pressures, and drivers of resistance. As a consequence, the strategies to improve antibiotic usage and overcome resistance have ultimately failed. This review gathers most of the \"non-canonical\" notions on antibiotics and resistance: from the alternative mechanisms of action of antibiotics and the limitations of susceptibility testing to the wide variety of selective pressures, lateral gene transfer mechanisms, ubiquity, and societal factors maintaining resistance. Only by having a \"big picture\" view of the problem can adequate strategies to harness resistance be devised. These strategies must be global, addressing the many aspects that drive the increasing prevalence of resistant bacteria aside from the clinical use of antibiotics.
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