Mechanisms of Ageing and Development最新文献

Deciphering Osteosarcopenia through the hallmarks of aging 从衰老的标志解密骨肉疏松症

IF 5.3 3区医学

Mechanisms of Ageing and Development Pub Date : 2024-10-11 DOI: 10.1016/j.mad.2024.111997

引用次数: 0

Sirtuin 3 drives sex-specific responses to age-related changes in mouse embryonic fibroblasts Sirtuin 3 驱动小鼠胚胎成纤维细胞对年龄相关变化做出性别特异性反应

IF 5.3 3区医学

Mechanisms of Ageing and Development Pub Date : 2024-10-11 DOI: 10.1016/j.mad.2024.111996

{"title":"Sirtuin 3 drives sex-specific responses to age-related changes in mouse embryonic fibroblasts","authors":"","doi":"10.1016/j.mad.2024.111996","DOIUrl":"10.1016/j.mad.2024.111996","url":null,"abstract":"<div><div>The aging process is a complex phenomenon characterised by a gradual decline in physiological functions and an increased susceptibility to age-related diseases. An important factor in aging is mitochondrial dysfunction, which leads to an accumulation of cellular damage over time. Mitochondrial Sirtuin 3 (Sirt3), an important regulator of energy metabolism, plays a central role in maintaining mitochondrial function. Loss of Sirt3 can lead to reduced energy levels and an impaired ability to repair cellular damage, a hallmark of the aging process. In this study we investigated the impact of Sirt3 loss on mitochondrial function, metabolic responses and cellular aging processes in male and female mouse embryonic fibroblasts (MEF) exposed to etoposide-induced DNA damage, which is commonly associated with cellular dysfunction and senescence. We found that Sirt3 contributes to the sex-specific metabolic response to etoposide treatment. While male MEF exhibited minimal damage suggesting potential prior adaptation to stress due to Sirt3 loss, female MEF lacking Sirt3 experienced higher vulnerability to genotoxic stress, implying a pivotal role of Sirt3 in their resistance to such challenges. These findings offer potential insights into therapeutic strategies targeting Sirt3- and sex-specific signalling pathways in diseases associated with DNA damage that play a critical role in the aging process.</div></div>","PeriodicalId":18340,"journal":{"name":"Mechanisms of Ageing and Development","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142441524","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fisetin as a senotherapeutic agent: Evidence and perspectives for age-related diseases 作为老年治疗剂的鱼腥草素：老年性疾病的证据与前景》。

IF 5.3 3区医学

Mechanisms of Ageing and Development Pub Date : 2024-10-09 DOI: 10.1016/j.mad.2024.111995

{"title":"Fisetin as a senotherapeutic agent: Evidence and perspectives for age-related diseases","authors":"","doi":"10.1016/j.mad.2024.111995","DOIUrl":"10.1016/j.mad.2024.111995","url":null,"abstract":"<div><div>Fisetin, a flavonoid naturally occurring in plants, fruits, and vegetables, has recently gained attention for its potential role as a senotherapeutic agent for the treatment of age-related chronic diseases. Senotherapeutics target senescent cells, which accumulate with age and disease, in both circulating immune cell populations and solid organs and tissues. Senescent cells contribute to development of many chronic diseases, primarily by eliciting systemic chronic inflammation through their senescence-associated secretory phenotype. Here, we explore whether fisetin as a senotherapeutic can eliminate senescent cells, and thereby alleviate chronic diseases, by examining current evidence from <em>in vitro</em> studies and animal models that investigate fisetin’s impact on age-related diseases, as well as from phase I/II trials in various patient populations. We discuss the application of fisetin in humans, including challenges and future directions. Our review of available data suggests that targeting senescent cells with fisetin offers a promising strategy for managing multiple chronic diseases, potentially transforming future healthcare for older and multimorbid patients. However, further studies are needed to establish the safety, pharmacokinetics, and efficacy of fisetin as a senotherapeutic, identify relevant and reliable outcome measures in human trials, optimize dosing, and better understand the possible limitations of fisetin as a senotherapeutic agent.</div></div>","PeriodicalId":18340,"journal":{"name":"Mechanisms of Ageing and Development","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142391708","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The impact of opioids on the hallmarks of ageing 阿片类药物对衰老特征的影响。

IF 5.3 3区医学

Mechanisms of Ageing and Development Pub Date : 2024-09-24 DOI: 10.1016/j.mad.2024.111994

{"title":"The impact of opioids on the hallmarks of ageing","authors":"","doi":"10.1016/j.mad.2024.111994","DOIUrl":"10.1016/j.mad.2024.111994","url":null,"abstract":"<div><div>Opioids rank among the most hazardous substances of abuse, leading to opioid use disorders (which greatly diminish life quality) and contributing to the highest drug-related mortality rates. Nonetheless, both the therapeutic and recreational use of opioids is escalating globally. Interestingly, chronic opioid users often exhibit signs consistent with accelerated ageing, suggesting that they likely interfere with well-characterized ageing mechanisms (e.g., telomere shortening, epigenetic changes, mitochondrial dysfunction, cellular senescence). Here, we review the most recent advances regarding the impact of opioids on well-characterized hallmarks of ageing, to ascertain a potential association between opioid use and accelerated ageing. Our findings indicate that there is accumulating evidence supporting a close association between the use of opioids and the early onset of some ageing hallmarks, namely mitochondrial dysfunction, genomic instability, or telomere shortening. However, there is still limited data available regarding how opioids specifically impact other ageing hallmarks, like nutrient sensing, cellular senescence, or loss of proteostasis. Taking into consideration the high prevalence of opioid use, strengthening the understanding of the mechanisms underlying opioids’ impact on ageing assumes utmost relevance, both in terms of improving risk assessment, as well as to help researchers and clinicians prevent or mitigate these effects in clinical settings.</div></div>","PeriodicalId":18340,"journal":{"name":"Mechanisms of Ageing and Development","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142349662","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The role of mitochondria in cytokine and chemokine signalling during ageing 线粒体在衰老过程中细胞因子和趋化因子信号传递中的作用。

IF 5.3 3区医学

Mechanisms of Ageing and Development Pub Date : 2024-09-20 DOI: 10.1016/j.mad.2024.111993

{"title":"The role of mitochondria in cytokine and chemokine signalling during ageing","authors":"","doi":"10.1016/j.mad.2024.111993","DOIUrl":"10.1016/j.mad.2024.111993","url":null,"abstract":"<div><div>Ageing is accompanied by a persistent, low-level inflammation, termed “inflammageing”, which contributes to the pathogenesis of age-related diseases. Mitochondria fulfil multiple roles in host immune responses, while mitochondrial dysfunction, a hallmark of ageing, has been shown to promote chronic inflammatory states by regulating the production of cytokines and chemokines. In this review, we aim to disentangle the molecular mechanisms underlying this process. We describe the role of mitochondrial signalling components such as mitochondrial DNA, mitochondrial RNA, N-formylated peptides, ROS, cardiolipin, cytochrome c, mitochondrial metabolites, potassium efflux and mitochondrial calcium in the age-related immune system activation. Furthermore, we discuss the effect of age-related decline in mitochondrial quality control mechanisms, including mitochondrial biogenesis, dynamics, mitophagy and UPR<sup>mt</sup>, in inflammatory states upon ageing. In addition, we focus on the dynamic relationship between mitochondrial dysfunction and cellular senescence and its role in regulating the secretion of pro-inflammatory molecules by senescent cells. Finally, we review the existing literature regarding mitochondrial dysfunction and inflammation in specific age-related pathological conditions, including neurodegenerative diseases (Alzheimer’s and Parkinson’s disease, and amyotrophic lateral sclerosis), osteoarthritis and sarcopenia.</div></div>","PeriodicalId":18340,"journal":{"name":"Mechanisms of Ageing and Development","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142290770","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mosaic loss of Y chromosome and the association to mortality in Danish men aged 56–100 years 丹麦 56-100 岁男性 Y 染色体马赛克缺失及其与死亡率的关系

IF 5.3 3区医学

Mechanisms of Ageing and Development Pub Date : 2024-09-16 DOI: 10.1016/j.mad.2024.111979

{"title":"Mosaic loss of Y chromosome and the association to mortality in Danish men aged 56–100 years","authors":"","doi":"10.1016/j.mad.2024.111979","DOIUrl":"10.1016/j.mad.2024.111979","url":null,"abstract":"<div><p>Mosaic loss of the Y chromosome (mLOY) is a common somatic mutation in the blood of elderly men and several studies have found mLOY in blood cells to be associated with an increased risk of various diseases and mortality. However, most of these studies have focused on middle-aged and older adults, meaning that mLOY in extremely old individuals like centenarians is understudied.</p><p>To explore mLOY across a wider age range compared to earlier studies and to specifically focus on centenarians, mLOY was estimated in 917 Danish men aged 56–100 years. We found that the percentage of men with LOY increased with age until age 85, after which it plateaued at around 40 %. Consistently, a longitudinal comparison of mLOY revealed that mLOY predominantly increased with age, although inter-individual variation was seen. Using a twin sub-sample, the broad-sense heritability of mLOY was estimated at 72 %, indicating a substantial genetic influence.</p><p>Supporting previous findings, mLOY was found to associate with increased mortality across all study participants and in men younger than 80 years. In centenarians, however, a higher level of mLOY associated with better survival, most likely due to selection, although confirmation of our findings in larger studies is needed.</p></div>","PeriodicalId":18340,"journal":{"name":"Mechanisms of Ageing and Development","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0047637424000794/pdfft?md5=d66bfb064b99df1c2395b6acff28c045&pid=1-s2.0-S0047637424000794-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142239884","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Development and validation of cardiometabolic risk predictive models based on LDL oxidation and candidate geromarkers from the MARK-AGE data 基于低密度脂蛋白氧化和 MARK-AGE 数据中候选老年标志物的心脏代谢风险预测模型的开发与验证

IF 5.3 3区医学

Mechanisms of Ageing and Development Pub Date : 2024-09-14 DOI: 10.1016/j.mad.2024.111987

{"title":"Development and validation of cardiometabolic risk predictive models based on LDL oxidation and candidate geromarkers from the MARK-AGE data","authors":"","doi":"10.1016/j.mad.2024.111987","DOIUrl":"10.1016/j.mad.2024.111987","url":null,"abstract":"<div><p>The predictive value of the susceptibility to oxidation of LDL particles (LDLox) in cardiometabolic risk assessment is incompletely understood. The main objective of the current study was to assess its relationship with other relevant biomarkers and cardiometabolic risk factors from MARK-AGE data. A cross-sectional observational study was carried out on 1089 subjects (528 men and 561 women), aged 40–75 years old, randomly recruited age- and sex-stratified individuals from the general population. A correlation analysis exploring the relationships between LDLox and relevant biomarkers was undertaken, as well as the development and validation of several machine learning algorithms, for estimating the risk of the combined status of high blood pressure and obesity for the MARK-AGE subjects. The machine learning models yielded Area Under the Receiver Operating Characteristic Curve Score ranging 0.783–0.839 for the internal validation, while the external validation resulted in an Under the Receiver Operating Characteristic Curve Score between 0.648 and 0.787, with the variables based on LDLox reaching significant importance within the obtained predictions. The current study offers novel insights regarding the combined effects of LDL oxidation and other ageing markers on cardiometabolic risk. Future studies might be extended on larger patient cohorts, in order to obtain reproducible clinical assessment models.</p></div>","PeriodicalId":18340,"journal":{"name":"Mechanisms of Ageing and Development","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0047637424000873/pdfft?md5=1386a90e65cd9d45e836df338224fc15&pid=1-s2.0-S0047637424000873-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142274207","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Characterization of a natural model of adult mice with different rate of aging 不同衰老速度成年小鼠自然模型的特征

IF 5.3 3区医学

Mechanisms of Ageing and Development Pub Date : 2024-09-14 DOI: 10.1016/j.mad.2024.111991

{"title":"Characterization of a natural model of adult mice with different rate of aging","authors":"","doi":"10.1016/j.mad.2024.111991","DOIUrl":"10.1016/j.mad.2024.111991","url":null,"abstract":"<div><p>Aging is a heterogeneous process, so individuals of the same age may be aging at a different rate. A natural model of premature aging in mice have been proposed based on the poor response to the T-maze. Those that take longer to cross the intersection are known as Prematurely Aging Mice (PAM), while those that show an exceptional response are known as Exceptional non-PAM (E-NPAM), being the rest non-PAM (NPAM). Although many aspects of PAM and E-NPAM have been described, some aspects of their brain aging have not been studied. Similarly, it is known that PAM, NPAM and E-NPAM show a different rate of aging and longevity, but the differences between these three groups in behavior, immune function and oxidative-inflammatory state are unknown. The present study aims to deepen the study of brain aging in PAM and E-NPAM, and to study the differences in behavior, immunity, and oxidative-inflammatory state of peritoneal leukocytes between PAM, NPAM and E-NPAM. Results show deteriorated brains in PAM. Moreover, NPAM show an oxidative state similar to E-NPAM, an anxiety similar to PAM, and an intermediate immunity and lifespan between PAM and E-NPAM. In conclusion, immune function seems to be more associated with the longevity achieved.</p></div>","PeriodicalId":18340,"journal":{"name":"Mechanisms of Ageing and Development","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0047637424000915/pdfft?md5=0f665552aebe743365069cd5591a4e16&pid=1-s2.0-S0047637424000915-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142239885","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mitigating the effects of time in the heart and liver: The variable effects of short- and long-term caloric restriction 减轻时间对心脏和肝脏的影响：短期和长期热量限制的不同影响

IF 5.3 3区医学

Mechanisms of Ageing and Development Pub Date : 2024-09-11 DOI: 10.1016/j.mad.2024.111992

{"title":"Mitigating the effects of time in the heart and liver: The variable effects of short- and long-term caloric restriction","authors":"","doi":"10.1016/j.mad.2024.111992","DOIUrl":"10.1016/j.mad.2024.111992","url":null,"abstract":"<div><p>Caloric restriction (CR) is known for its anti-aging benefits, partly due to reduced oxidative stress and enhanced antioxidant defense. However, CR outcomes vary based on its intensity, timing, and duration. This study explored CR's effects on antioxidant activity in the heart and liver of male Wistar rats during aging. We investigated two CR paradigms: long-term CR (LTCR), started early in life, and short-term CR (STCR), initiated in middle or old age for 3 months. Contrary to previous findings of short-term CR deleterious effects of on the nervous system, our results revealed increased levels of key antioxidants after STCR. More specifically, we found an increase in GSH-Px and GSH under STCR that was particularly pronounced in the liver, while an increase in CAT and GR activities was observed in the heart of the STCR groups. Catalase was characterized as an enzyme particularly responsive to CR, as its activity was also increased in both the liver and heart after long-term caloric restriction. Our results highlight a significant tissue-specific response to CR and contribute to our understanding of the dynamic effects of CR, which in turn has implications for refining its therapeutic potential in combating age-related decline.</p></div>","PeriodicalId":18340,"journal":{"name":"Mechanisms of Ageing and Development","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142274208","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Adipose tissue senescence: Biological changes, hallmarks and therapeutic approaches 脂肪组织衰老：生物变化、特征和治疗方法

IF 5.3 3区医学

Mechanisms of Ageing and Development Pub Date : 2024-09-10 DOI: 10.1016/j.mad.2024.111988

{"title":"Adipose tissue senescence: Biological changes, hallmarks and therapeutic approaches","authors":"","doi":"10.1016/j.mad.2024.111988","DOIUrl":"10.1016/j.mad.2024.111988","url":null,"abstract":"<div><p>Adipose tissue (AT), the largest energy storage reservoir and endocrine organ, plays a crucial role in regulating systemic energy metabolism. As one of the most vulnerable tissues during aging, the plasticity of AT is impaired. With age, AT undergoes redistribution, characterized by expansion of visceral adipose tissue (VAT) and reduction of peripheral subcutaneous adipose tissue (SAT). Additionally, age-related changes in AT include reduced adipogenesis of white adipocytes, decreased proliferation and differentiation capacity of mesenchymal stromal/stem cells (MSCs), diminished thermogenic capacity in brown/beige adipocytes, and dysregulation of immune cells. Specific and sensitive hallmarks enable the monitoring and evaluation of the biological changes associated with aging. In this study, we have innovatively proposed seven characteristic hallmarks of AT senescence, including telomere attrition, epigenetic alterations, genomic instability, mitochondrial dysfunction, disabled macroautophagy, cellular senescence, and chronic inflammation, which are intricately interconnected and mutually regulated. Finally, we discussed anti-aging strategies targeting AT, offering insights into mitigating or delaying metabolic disturbances caused by AT senescence.</p></div>","PeriodicalId":18340,"journal":{"name":"Mechanisms of Ageing and Development","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142239883","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0