ages

年龄
  • 文章类型: Journal Article
    晚期糖基化终产物(AGEs)在大脑中积累,导致神经退行性疾病,如阿尔茨海默病(AD)。AD的病理生理学受AGEs受体和toll样受体4(TLR4)的影响。蛋白质糖基化通过一系列涉及席夫碱形成的复杂反应导致不可逆的AGEs,Amadori的反应,接着是美拉德反应,导致大脑葡萄糖代谢异常,氧化应激,线粒体功能失调,斑块沉积,和神经元死亡。淀粉样斑块和其他刺激激活巨噬细胞,它们是AD发展中至关重要的免疫细胞,引发炎症分子的产生,并有助于疾病的发病机制。动脉粥样硬化的危险因素使AD的风险增加一倍,痴呆症,高龄,和2型糖尿病(DM)。随着年龄的增长,由于乙二醛酶水平的降低和AGE积累的增加,神经系统疾病如AD的患病率增加。胰岛素在蛋白质稳定中的作用影响AD样tau磷酸化和淀粉样β肽清除的标志,影响脂质代谢,炎症,血管反应性,和血管功能。高迁移率族蛋白1(HMGB1),神经炎症反应的关键引发剂和激活剂,与AD等神经退行性疾病的发展有关。发现TLR4抑制剂可改善记忆和学习障碍并减少Aβ积累。抗糖基化药物的治疗研究,晚期糖基化终产物受体(RAGE)抑制剂,和年龄破坏者为干预策略提供了希望。饮食和生活方式的改变也可以减缓AD的进展。需要针对AGE相关途径的较新的治疗方法。
    Advanced glycation end products (AGEs) accumulate in the brain, leading to neurodegenerative conditions such as Alzheimer\'s disease (AD). The pathophysiology of AD is influenced by receptors for AGEs and toll-like receptor 4 (TLR4). Protein glycation results in irreversible AGEs through a complicated series of reactions involving the formation of Schiff\'s base, the Amadori reaction, followed by the Maillard reaction, which causes abnormal brain glucose metabolism, oxidative stress, malfunctioning mitochondria, plaque deposition, and neuronal death. Amyloid plaque and other stimuli activate macrophages, which are crucial immune cells in AD development, triggering the production of inflammatory molecules and contributing to the disease\'s pathogenesis. The risk of AD is doubled by risk factors for atherosclerosis, dementia, advanced age, and type 2 diabetic mellitus (DM). As individuals age, the prevalence of neurological illnesses such as AD increases due to a decrease in glyoxalase levels and an increase in AGE accumulation. Insulin\'s role in proteostasis influences hallmarks of AD-like tau phosphorylation and amyloid β peptide clearance, affecting lipid metabolism, inflammation, vasoreactivity, and vascular function. The high-mobility group box 1 (HMGB1) protein, a key initiator and activator of a neuroinflammatory response, has been linked to the development of neurodegenerative diseases such as AD. The TLR4 inhibitor was found to improve memory and learning impairment and decrease Aβ build-up. Therapeutic research into anti-glycation agents, receptor for advanced glycation end products (RAGE) inhibitors, and AGE breakers offers hope for intervention strategies. Dietary and lifestyle modifications can also slow AD progression. Newer therapeutic approaches targeting AGE-related pathways are needed.
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  • 文章类型: Journal Article
    慢性炎症是许多非传染性疾病发展的共同基础,特别是糖尿病,动脉粥样硬化,和肿瘤。涉及晚期糖基化终产物(AGEs)及其受体RAGE的轴的激活是慢性炎症过程中的关键促进因素,影响这些疾病的病理进展。体内AGEs的积累是由于糖化反应和氧化应激的增加,在糖尿病患者中尤其明显。通过绑定到RAGE,AGEs激活信号通路,如NF-κB,促进炎症因子的释放,加剧细胞损伤和炎症,进一步促进动脉粥样硬化斑块的形成和肿瘤的发展。本文就AGEs-RAGE轴激活上述疾病慢性炎症的分子机制进行综述,以及抑制AGEs-RAGE轴的策略,旨在减缓或阻止慢性炎症和相关疾病的进展。这包括AGEs抑制剂的开发,RAGE拮抗剂,以及针对上游和下游信号通路的干预措施。此外,早期检测AGEs水平和RAGE表达作为生物标志物为糖尿病的预防和治疗提供了新的途径。动脉粥样硬化,和肿瘤。
    Chronic inflammation is a common foundation for the development of many non-communicable diseases, particularly diabetes, atherosclerosis, and tumors. The activation of the axis involving Advanced Glycation End products (AGEs) and their receptor RAGE is a key promotive factor in the chronic inflammation process, influencing the pathological progression of these diseases. The accumulation of AGEs in the body results from an increase in glycation reactions and oxidative stress, especially pronounced in individuals with diabetes. By binding to RAGE, AGEs activate signaling pathways such as NF-κB, promoting the release of inflammatory factors, exacerbating cell damage and inflammation, and further advancing the formation of atherosclerotic plaques and tumor development. This review will delve into the molecular mechanisms by which the AGEs-RAGE axis activates chronic inflammation in the aforementioned diseases, as well as strategies to inhibit the AGEs-RAGE axis, aiming to slow or halt the progression of chronic inflammation and related diseases. This includes the development of AGEs inhibitors, RAGE antagonists, and interventions targeting upstream and downstream signaling pathways. Additionally, the early detection of AGEs levels and RAGE expression as biomarkers provides new avenues for the prevention and treatment of diabetes, atherosclerosis, and tumors.
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  • 文章类型: Systematic Review
    目的:妊娠诱发的先兆子痫是一种严重的妊娠并发症,先兆子痫与后代慢性高血压的风险增加有关。然而,妊娠期暴露于先兆子痫对后代血压(BP)的总体影响程度尚不清楚.本系统综述和荟萃分析旨在系统地评估先兆子痫对后代血压的影响。
    结果:在确定的2550种出版物中,包括23项研究。荟萃分析表明,先兆子痫增加了子代高血压的潜在风险。子宫内暴露于先兆子痫的后代收缩压(SBP)为2.0mmHg(95%CI:1.2,2.8),舒张压(DBP)为1.4mmHg(95%CI:0.9,1.9)。与那些血压正常的母亲出生的人相比。在按性别对儿童和青少年进行的分层分析中,相关性相似,地理区域,年龄,和胎龄。在童年和青年时期,先兆子痫孕妇的后代患高血压的风险增加.监测他们的BP至关重要。
    OBJECTIVE: Pregnancy-induced preeclampsia is a severe pregnancy complication and preeclampsia has been associated with an increased risk of chronic hypertension for offspring. However, the magnitude of the overall effect of exposure to preeclampsia in pregnancy on blood pressure (BP) in offspring is unknown. This systematic review and meta-analysis was sought to systematically assess the effects of preeclampsia on the BP of the offspring.
    RESULTS: Of 2550 publications identified, 23 studies were included. The meta-analysis indicated that preeclampsia increases the potential risk of hypertension in offspring. Systolic blood pressure (SBP) was 2.0 mm Hg (95% CI: 1.2, 2.8) and diastolic blood pressure (DBP) was 1.4 mm Hg (95% CI: 0.9, 1.9) higher in offspring exposed to pre-eclampsia in utero, compared to those born to normotensive mothers. The correlations were similar in stratified analyses of children and adolescents by sex, geographic area, ages, and gestational age. During childhood and young adulthood, the offspring of pregnant women with preeclampsia are at an increased risk of high BP. It is crucial to monitor their BP.
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  • 文章类型: Journal Article
    晚期糖基化终产物(AGEs)由于与慢性疾病和衰老过程有关而引起了广泛关注。近年来,年轻人中的老年病患病率显着上升,可能归因于现代生活节奏的加快。AGEs的积累主要归因于它们在新陈代谢中固有的困难,这使得它们成为慢性疾病检测的有前途的生物标志物。这篇综述旨在全面概述AGE研究的最新进展和发现。讨论分为两个主要部分:内源性AGEs(在体内形成)和外源性AGEs(来自外部来源)。随后总结了AGEs的各个方面,包括他们的生产途径,致病机制,和检测方法。此外,这篇综述探讨了未来关于AGEs的研究前景。总的来说,这篇全面的综述强调了AGEs在慢性疾病检测中的重要性,并提供了对其意义的透彻理解.它强调了进一步研究努力加深我们对AGEs及其对人类健康影响的理解的必要性。
    Advanced glycation end products (AGEs) have garnered significant attention due to their association with chronic diseases and the aging process. The prevalence of geriatric diseases among young individuals has witnessed a notable surge in recent years, potentially attributed to the accelerated pace of modern life. The accumulation of AGEs is primarily attributed to their inherent difficulty in metabolism, which makes them promising biomarkers for chronic disease detection. This review aims to provide a comprehensive overview of the recent advancements and findings in AGE research. The discussion is divided into two main sections: endogenous AGEs (formed within the body) and exogenous AGEs (derived from external sources). Various aspects of AGEs are subsequently summarized, including their production pathways, pathogenic mechanisms, and detection methods. Moreover, this review delves into the future research prospects concerning AGEs. Overall, this comprehensive review underscores the importance of AGEs in the detection of chronic diseases and provides a thorough understanding of their significance. It emphasizes the necessity for further research endeavors to deepen our comprehension of AGEs and their implications for human health.
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  • 文章类型: Journal Article
    卵泡液(FF)晚期糖基化终产物(AGEs)与低卵母细胞质量和数量有关,低施肥率,胚胎发育受损,妊娠率低。这些发现在接受体外受精(IVF)和卵胞浆内单精子注射(ICSI)的妇女中尤其重要。ie,辅助生殖技术(ART)。进行了系统的文献检索,以检查各种AGEs,包括戊糖苷,羧甲基赖氨酸(CML),甲基乙二醛5-氢-5-甲基咪唑酮(MG-H1),有毒年龄(TAGE),和可溶性AGE受体(sRAGE)与ART结果。研究表明,FF中的总AGEs和sRAGE与卵巢反应有关,卵泡数,检索到的卵母细胞数量,成熟(MII)卵母细胞数,受精率,胚胎数量,胚胎质量,成功怀孕。尽管FFAGEs可以被认为是预测性生物标志物,群体异质性和排卵诱导方案的差异使研究结果不太清楚.这篇综述强调了AGEs在ART中的重要作用以及评估血清与FF中AGEs以更好地预测ART结果的必要性。
    Follicular fluid (FF) advanced glycation end products (AGEs) have been associated with low oocyte quality and number, low fertilization rate, impaired embryonic development and low pregnancy rate. These findings are especially relevant in women undergoing in vitro fertilization (IVF) and intracytoplasmic sperm injection (ICSI), ie, assisted reproductive technology (ART). A systematic literature search was conducted to examine various AGEs including pentosidine, carboxymethyl-lysine (CML), methylglyoxal 5-hydro-5-methylimidazolones (MG-H1), toxic AGE (TAGE), and soluble receptor for AGE (sRAGE) with ART outcomes. Studies showed that total AGEs and sRAGE in FF were associated with the ovarian response, follicle number, retrieved oocyte number, mature (MII) oocyte number, fertilization rate, embryo number, embryo quality, and successful pregnancy. Although FF AGEs could be considered predictive biomarkers, population heterogeneity and differences in ovulation induction protocols make the findings less clear. This review highlights important role of AGEs in ART and necessity of evaluating AGEs in serum vs with FF to better predict ART outcomes.
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  • 文章类型: Review
    背景:糖尿病的各种微血管和大血管并发症的发生涉及多种发病机制。在所有这些中,晚期糖基化终产物(AGEs)与此密切相关。
    目的:本综述旨在总结有关AGEs的发生及其在糖尿病微血管和大血管并发症中的潜在作用的现有文献。
    结果:未控制的高血糖通过还原糖和蛋白质之间的非酶糖基化反应触发AGEs的形成,脂质,或核酸。AGEs在慢性高血糖状态下在血液和身体组织中积累。AGEs产生各种细胞内和细胞外分子的不可逆交联,并激活晚期糖基化终产物(RAGE)的受体,刺激产生活性氧(ROS)并导致氧化应激的下游信号通路。此外,AGEs对线粒体呼吸链蛋白的细胞内糖基化有助于ROS的进一步产生,which,反过来,设定了一个进一步促进内源性AGEs产生的恶性循环。通过这些途径,AGEs在各种糖尿病并发症的发病机制中起主要作用。包括糖尿病视网膜病变,肾病,神经病,骨病,动脉粥样硬化和非酒精性脂肪性肝病。多项临床研究和荟萃分析显示,AGEs的组织或循环水平与各种糖尿病并发症的发展之间存在正相关。此外,外源性AGEs,主要来自饮食,促进胰岛素抵抗,肥胖,和代谢综合征。
    结论:AGEs,由慢性高血糖引发,在糖尿病各种并发症的发病机制中起着举足轻重的作用。
    Multiple pathogenetic mechanisms are involved in the genesis of various microvascular and macrovascular complications of diabetes mellitus. Of all these, advanced glycation end products (AGEs) have been strongly implicated.
    The present narrative review aims to summarize the available literature on the genesis of AGEs and their potential role in the causation of both micro- and macrovascular complications of diabetes mellitus.
    Uncontrolled hyperglycemia triggers the formation of AGEs through non-enzymatic glycation reactions between reducing sugars and proteins, lipids, or nucleic acids. AGEs accumulate in bloodstream and bodily tissues under chronic hyperglycemia. AGEs create irreversible cross-linkages of various intra- and extracellular molecules and activate the receptor for advanced glycation end products (RAGE), which stimulates downstream signaling pathways that generate reactive oxygen species (ROS) and contribute to oxidative stress. Additionally, intracellular glycation of mitochondrial respiratory chain proteins by AGEs contributes to the further generation of ROS, which, in turn, sets a vicious cycle that further promotes the production of endogenous AGEs. Through these pathways, AGEs play a principal role in the pathogenesis of various diabetic complications, including diabetic retinopathy, nephropathy, neuropathy, bone disease, atherosclerosis and non-alcoholic fatty liver disease. Multiple clinical studies and meta-analyses have revealed a positive association between tissue or circulating levels of AGEs and development of various diabetic complications. Besides, exogenous AGEs, primarily those derived from diets, promote insulin resistance, obesity, and metabolic syndrome.
    AGEs, triggered by chronic hyperglycemia, play a pivotal role in the pathogenesis of various complications of diabetes mellitus.
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  • 文章类型: Journal Article
    阿尔茨海默病(Alzheimer\'sdisease,AD)是一种慢性且不可逆的神经退行性疾病,伴有进行性痴呆和认知障碍。AD对老年人构成了严峻的健康挑战,并成为全球主要的死亡原因之一。它具有复杂的病理生理学,有几个假设(胆碱能假说,淀粉样蛋白假说,tau假说,氧化应激,线粒体功能障碍等.).已经对多因素AD的管理进行了一些尝试。乙酰胆碱酯酶是迄今为止在AD管理中被广泛探索的唯一靶点。当前的审查提出了基于查尔酮的自然,半合成和合成化合物在潜在的抗阿尔茨海默病药物的搜索。当前综述的主要亮点强调查尔酮靶向不同的酶和途径,如乙酰胆碱酯酶,β-分泌酶(BACE1),tau蛋白,MAO,自由基,晚期糖基化终产物(AGEs)等.以及它们的结构活性关系有助于抑制上述各种AD靶标。
    Alzheimer\'s disease (AD) is a chronic and irreversible neurodegenerative disorder with progressive dementia and cognitive impairment. AD poses severe health challenge in elderly people and become one of the leading causes of death worldwide. It possesses complex pathophysiology with several hypotheses (cholinergic hypothesis, amyloid hypothesis, tau hypothesis, oxidative stress, mitochondrial dysfunction etc.). Several attempts have been made for the management of multifactorial AD. Acetylcholinesterase is the only target has been widely explored in the management of AD to the date. The current review set forth the chalcone based natural, semi-synthetic and synthetic compounds in the search of potential anti-Alzheimer\'s agents. The main highlights of current review emphasizes on chalcone target different enzymes and pathways like Acetylcholinesterase, β-secretase (BACE1), tau proteins, MAO, free radicals, Advanced glycation end Products (AGEs) etc. and their structure activity relationships contributing in the inhibition of above mentioned various targets of AD.
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  • 文章类型: Journal Article
    晚期糖基化终产物(AGEs)是由于蛋白质和脂质的非酶糖基化而内源性和外源性形成的一组不同的化合物。虽然加热对食品中AGE浓度的影响是已知的,很少有研究发表新的加工技术对AGE形成的影响。这项工作着重于有关新技术对食品中AGE形成的影响的当前科学知识。大多数研究不直接测量AGE含量,仅评估美拉德反应的产物。此外,这些研究没有比较与新技术相关的不同操作条件。这种信息的缺乏对具有安全AGE饮食摄入的食品的过程-组成关系的建立产生负面影响。总的来说,本综述的结果表明,使用新技术是生产AGE含量较低的食品的有希望的替代方法.
    Advanced glycation end products (AGEs) are a diverse group of compounds formed endogenously and exogenously due to non-enzymatic glycation of proteins and lipids. Although the effects of heating on AGE concentrations in foods are known, few studies have been published addressing the effects of new processing technologies on AGE formation. This work focuses on the current scientific knowledge about the impacts of novel technologies on AGE formation in food products. Most studies do not measure AGE content directly, evaluating only products of the Maillard reaction. Moreover, these studies do not compare distinct operational conditions associated with novel technologies. This lack of information impacts negatively the establishment of process-composition relationships for foods with safe AGE dietary intakes. Overall, the outcomes of this review suggest that the use of novel technologies is a promising alternative to produce food products with a lower AGE content.
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  • 文章类型: Journal Article
    晚期糖基化终产物(AGEs)参与了几种与年龄相关的并发症的发展。在一些研究中已经表明了AGEs的可溶性受体(sRAGE)对AGEs的有害作用的保护作用。然而,关于AGEs或sRAGE与死亡率关联的研究结果是模棱两可的.在这项荟萃分析中,我们旨在对循环AGEs或sRAGE与全因或心血管疾病(CVD)死亡率之间的相关性进行定量评估。通过包括PubMed在内的在线数据库进行了全面的文献检索,以确定相关出版物。Scopus,和WebofScience截至2020年11月29日。纳入评估循环AGEs或sRAGE与全因或CVD死亡率之间关联的前瞻性观察性研究。7项研究共3718名参与者和733例死亡病例(345例CVD死亡)纳入荟萃分析,以评估循环AGEs与死亡率之间的关系。我们的结果表明,较高的循环AGEs与全因风险增加相关(合并效应测量值:1.05;95%CI:1.01,1.09;P=0.018,I2=77.7%)和CVD死亡率(合并效应测量值:1.08;95%CI:1.01,1.14;P=0.015,I2=80.2%),分别。在14项研究中评估了sRAGE与死亡率之间的关联,共有16,335名参与者和2844例死亡病例(419例CVD死亡)。sRAGE的血清浓度与全因死亡率的风险无关(合并效应测量:1.01;95%CI:1.00,1.01;P=0.205,I2=75.5%),而sRAGE与CVD死亡风险之间存在显著关联(合并效应测量值:1.02;95%CI:1.00,1.04;P=0.02,I2=78.9%).我们的发现表明,较高的血清AGE浓度与全因和CVD死亡率的风险增加有关。此外,较高的循环sRAGE与CVD死亡率风险增加相关.这篇评论在PROSPERO注册为CRD42021236559。
    Advanced glycation end products (AGEs) are involved in the development of several age-related complications. The protective role of soluble receptors for AGEs (sRAGE) against deleterious effects of AGEs has been indicated in several studies. However, findings on the association of AGEs or sRAGE with mortality are equivocal. In this meta-analysis we aimed to present a quantitative estimation of the association between circulating AGEs or sRAGE and all-cause or cardiovascular disease (CVD) mortality. A comprehensive literature search was performed to determine relevant publications through the online databases including PubMed, Scopus, and Web of Science up to 29 November 2020. Prospective observational studies assessing the association between circulating AGEs or sRAGE and all-cause or CVD mortality were included. Seven studies with a total of 3718 participants and 733 mortality cases (345 CVD deaths) were included in the meta-analysis for assessing the association between circulating AGEs and mortality. Our results showed that higher circulating AGEs were associated with increased risk of all-cause (pooled effect measure: 1.05; 95% CI: 1.01, 1.09; P = 0.018, I2 = 77.7%) and CVD mortality (pooled effect measure: 1.08; 95% CI: 1.01, 1.14; P = 0.015, I2 = 80.2%), respectively. The association between sRAGE and mortality was assessed in 14 studies with a total of 16,335 participants and 2844 mortality cases (419 CVD deaths). Serum concentrations of sRAGE were not associated with the risk of all-cause mortality (pooled effect measure: 1.01; 95% CI: 1.00, 1.01; P = 0.205, I2 = 75.5%), whereas there was a significant link between sRAGE and the risk of CVD mortality (pooled effect measure: 1.02; 95% CI: 1.00, 1.04; P = 0.02, I2 = 78.9%). Our findings showed that a higher serum AGE concentration was associated with increased risk of all-cause and CVD mortality. In addition, higher circulating sRAGE was related to increased risk of CVD mortality. This review was registered at PROSPERO as CRD42021236559.
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  • 文章类型: Journal Article
    Advanced glycation end products (AGEs) are naturally occurring biomolecules formed by interaction of reducing sugars with biomolecules such as protein and lipids etc., Long term high blood sugar level and glycation accelerate the formation of AGEs. Unchecked continuous formation and accumulation of AGEs are potential risks for pathogenesis of various chronic diseases. Current mode of antidiabetic therapy is based on synthetic drugs that are often linked with severe adverse effects. Polyphenolic compounds derived from plants are supposed to inhibit glycation and formation of AGEs at multiple levels. Some polyphenolic compounds regulate the blood glucose metabolism by amplification of cell insulin resistance and activation of insulin like growth factor binding protein signaling pathway. Their antioxidant nature and metal chelating activity, ability to trap intermediate dicarbonyl compounds could be possible mechanisms against glycation and AGEs formation and hence, against AGEs induced health complications. Although, few species of polyphenolic compounds are being used in in vitro trials and their in vivo study is still in progress, increasing the area of research in this field may produce a fruitful approach in management of overall diabetic complications.
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