Abstract:
:The global population is aging, leading to an increasing burden of age-related neurodegenerative disease. Efforts to intervene against age-related dementias in older adults have generally proven ineffective. These failures suggest that a lifetime of brain aging may be difficult to reverse once widespread deterioration has occurred. To test interventions in younger populations, biomarkers of brain aging are needed that index subtle signs of accelerated brain deterioration that are part of the putative pathway to dementia. Here I review potential MRI-based biomarkers that could connect midlife brain aging to later life dementia. I survey the literature with three questions in mind, 1) Does the biomarker index age-related changes across the lifespan? 2) Does the biomarker index cognitive ability and cognitive decline? 3) Is the biomarker sensitive to known risk factors for dementia? I find that while there is preliminary support for some midlife MRI-based biomarkers for accelerated aging, the longitudinal research that would best answer these questions is still in its infancy and needs to be further developed. I conclude with suggestions for future research.
journal_name
Ageing Res Revjournal_title
Ageing research reviewsauthors
Elliott MLdoi
10.1016/j.arr.2020.101075subject
Has Abstractpub_date
2020-08-01 00:00:00pages
101075eissn
1568-1637issn
1872-9649pii
S1568-1637(19)30408-8journal_volume
61pub_type
杂志文章,评审abstract::Human ageing is associated with a gradual decline in the physiological functions of the body at multiple levels and it is a key risk factor for many diseases, including cancer. Ageing process is intimately related to widespread cellular senescence, characterised by an irreversible loss of proliferative capacity and al...
journal_title:Ageing research reviews
pub_type: 杂志文章,评审
doi:10.1016/j.arr.2015.03.004
更新日期:2015-09-01 00:00:00
abstract::Tau phosphorylation is regulated by a balance between tau kinase and phosphatase activities. Disruption of this equilibrium was suggested to be at the origin of abnormal tau phosphorylation and thereby that might contributes to tau aggregation. Thus, understanding the regulation modes of tau dephosphorylation is of hi...
journal_title:Ageing research reviews
pub_type: 杂志文章,评审
doi:10.1016/j.arr.2012.06.008
更新日期:2013-01-01 00:00:00
abstract::The role of epigenetics in aging and age-related diseases is a key issue in molecular physiology and medicine because certain epigenetic factors are thought to mediate, at least in part, the relationship between the genome and the environment. An active role for epigenetics in aging must meet two prior conditions: the...
journal_title:Ageing research reviews
pub_type: 杂志文章,评审
doi:10.1016/j.arr.2009.03.004
更新日期:2009-10-01 00:00:00
abstract::The recent pandemics of the SARS-Cov-2 has pushed physical activity (PA) and exercise at the forefront of the discussion, since PA is associated with a reduced risk of developing all the chronic diseases strongly associated with severe cases of SARS-Cov-2 and exercise is considered a complimentary therapeutics for the...
journal_title:Ageing research reviews
pub_type: 杂志文章,评审
doi:10.1016/j.arr.2021.101258
更新日期:2021-01-12 00:00:00
abstract:BACKGROUND:Aging is an important contributor to olfactory system deterioration in humans, leading to increased health and safety risks as well as affecting the quality of life. However, it is currently unknown when age-related olfactory deterioration begins in humans and thus when to initiate interventions to prevent o...
journal_title:Ageing research reviews
pub_type: 杂志文章,meta分析,评审
doi:10.1016/j.arr.2017.08.004
更新日期:2017-11-01 00:00:00
abstract::Autophagy is a lysosomal degradation process and protective housekeeping mechanism to eliminate damaged organelles, long-lived misfolded proteins and invading pathogens. Autophagy functions to recycle building blocks and energy for cellular renovation and homeostasis, allowing cells to adapt to stress. Modulation of a...
journal_title:Ageing research reviews
pub_type: 杂志文章,评审
doi:10.1016/j.arr.2018.08.004
更新日期:2018-11-01 00:00:00
abstract::Developments in technology have facilitated quantitative examination of gaze behavior in relation to locomotion. The objective of this systematic review is to provide a critical evaluation of available evidence and to explore the role of gaze behavior among older adults during different forms of locomotion. Database s...
journal_title:Ageing research reviews
pub_type: 杂志文章,评审
doi:10.1016/j.arr.2014.12.005
更新日期:2015-03-01 00:00:00
abstract::Epidemiological and experimental data demonstrate a strong correlation between age-related chronic inflammation (inflamm-aging) and cancer development. However, a comprehensive approach is needed to clarify the underlying molecular mechanisms. Chronic inflammation has mainly been attributed to continuous immune cells ...
journal_title:Ageing research reviews
pub_type: 杂志文章,评审
doi:10.1016/j.arr.2013.05.001
更新日期:2013-09-01 00:00:00
abstract::The COVID-19 pandemic poses an imminent threat to humanity, especially to the elderly. The molecular mechanisms underpinning the age-dependent disparity for disease progression is not clear. COVID-19 is both a respiratory and a vascular disease in severe patients. The damage endothelial system provides a good explanat...
journal_title:Ageing research reviews
pub_type: 杂志文章,评审
doi:10.1016/j.arr.2020.101201
更新日期:2020-12-01 00:00:00
abstract::Emerging data show that the health and economic impacts of COVID-19 are being disproportionately borne by individuals who are not only biologically, but also socially vulnerable. Based on preliminary data from Sweden and other reports, in this paper we propose a conceptual framework whereby different factors related t...
journal_title:Ageing research reviews
pub_type: 杂志文章,评审
doi:10.1016/j.arr.2020.101149
更新日期:2020-11-01 00:00:00
abstract::Malnutrition plays a role in the development of poor physical performance, frailty and sarcopenia. The use of nutritional supplementations for improving physical performance and muscle strength parameters in older people is unclear. We therefore aimed to summarize the effect of nutritional supplementations compared to...
journal_title:Ageing research reviews
pub_type: 杂志文章,meta分析
doi:10.1016/j.arr.2019.02.005
更新日期:2019-05-01 00:00:00
abstract::Elder abuse has devastating consequences for older persons such as a poor quality of life, psychological distress, and loss of property and security. It is also associated with increased mortality and morbidity. Elder abuse is a problem that manifests itself in both rich and poor countries and at all levels of society...
journal_title:Ageing research reviews
pub_type: 杂志文章,meta分析,评审
doi:10.1016/j.arr.2012.04.001
更新日期:2013-01-01 00:00:00
abstract::Population ageing is escalating rapidly now worldwide. This is an important time to determine if ageism or discrimination against older people is of concern, such as it being prevalent and/or increasing in prevalence. Over the years, many ageism measurement tools have been developed, with research findings from their ...
journal_title:Ageing research reviews
pub_type: 杂志文章,评审
doi:10.1016/j.arr.2019.03.001
更新日期:2019-05-01 00:00:00
abstract::Sarcopenia, an age-associated decline in skeletal muscle mass coupled with functional deterioration, may be exacerbated by obesity leading to higher disability, frailty, morbidity and mortality rates. In the combination of sarcopenia and obesity, the state called sarcopenic obesity (SOB), some key age- and obesity-med...
journal_title:Ageing research reviews
pub_type: 杂志文章,评审
doi:10.1016/j.arr.2016.09.008
更新日期:2017-05-01 00:00:00
abstract::Autophagy, a major catabolic pathway responsible of the elimination of damaged proteins and organelles, is now recognized as an anti-aging process. In addition to its basal role in cell homeostasis, autophagy is also a stress-responsive mechanism for survival purposes. Here, we review recent literature to highlight th...
journal_title:Ageing research reviews
pub_type: 杂志文章,评审
doi:10.1016/j.arr.2015.08.004
更新日期:2015-11-01 00:00:00
abstract::In our ever-aging world population, the risk of age-related neuropathies has been increasing, representing both a social and economic burden to society. Since the ability to regenerate in the adult mammalian central nervous system is very limited, brain trauma and neurodegeneration are often permanent. As a consequenc...
journal_title:Ageing research reviews
pub_type: 杂志文章,评审
doi:10.1016/j.arr.2020.101086
更新日期:2020-09-01 00:00:00
abstract::We have long accepted that exercise is 'good for us'; that - put more rigorously - moderate exercise is associated with not just aerobic fitness but also reduced morbidity and reduced mortality from cardiovascular disease and even malignancies. Caloric restriction (moderate hunger) and our exposure to dietary phytoche...
journal_title:Ageing research reviews
pub_type: 杂志文章,评审
doi:10.1016/j.arr.2017.05.005
更新日期:2017-08-01 00:00:00
abstract::Uncoupling proteins (UCPs), which dissipate the mitochondrial proton gradient, have the ability to decouple mitochodrial respiration from ATP production. Since mitochondrial electron transport is a major source of free radical production, it is possible that UCP activity might impact free radical production. Free radi...
journal_title:Ageing research reviews
pub_type: 杂志文章,评审
doi:10.1016/j.arr.2006.03.007
更新日期:2006-05-01 00:00:00
abstract::White matter (WM) occupies a large volume of the human cerebrum and is mainly composed of myelinated axons and myelin-producing glial cells. The myelinated axons within WM are the structural foundation for efficient neurotransmission between cortical and subcortical areas. Similar to neuron-enriched gray matter areas,...
journal_title:Ageing research reviews
pub_type: 杂志文章,评审
doi:10.1016/j.arr.2016.11.006
更新日期:2017-03-01 00:00:00
abstract::A wide array of cell signaling mediators and their interactions play vital roles in neuroinflammation associated with ischemia, brain trauma, developmental disorders and age-related neurodegeneration. Along with neurons, microglia and astrocytes are also affected by the inflammatory cascade by releasing pro-inflammato...
journal_title:Ageing research reviews
pub_type: 杂志文章,评审
doi:10.1016/j.arr.2017.02.004
更新日期:2017-07-01 00:00:00
abstract::In addition to its role in movement, human skeletal muscle also plays important roles in physiological activities related to metabolism and the endocrine system. Aging and disease onset and progression can induce the reduction of skeletal muscle mass and function, thereby exacerbating skeletal muscle atrophy. Recent s...
journal_title:Ageing research reviews
pub_type: 杂志文章,评审
doi:10.1016/j.arr.2020.101155
更新日期:2020-11-01 00:00:00
abstract::It has been well-established that the age-related loss of muscle mass and strength, or sarcopenia, impairs skeletal muscle function and reduces functional performance at a more advanced age. Skeletal muscle satellite cells (SC), as precursors of new myonuclei, have been suggested to be involved in the development of s...
journal_title:Ageing research reviews
pub_type: 杂志文章,评审
doi:10.1016/j.arr.2009.05.003
更新日期:2009-10-01 00:00:00
abstract::Considering the increasing number of elderly in the world's population today, developing effective treatments for age-related pathologies is one of the biggest challenges in modern medical research. Age-related neurodegeneration, in particular, significantly impacts important sensory, motor, and cognitive functions, s...
journal_title:Ageing research reviews
pub_type: 杂志文章,评审
doi:10.1016/j.arr.2015.10.004
更新日期:2015-11-01 00:00:00
abstract::The endoplasmic reticulum (ER) is a multifunctional organelle which co-ordinates protein folding, lipid biosynthesis, calcium storage and release. Perturbations that disrupt ER homeostasis lead to the misfolding of proteins, ER stress and up-regulation of a signaling pathway called the ER stress response or the unfold...
journal_title:Ageing research reviews
pub_type: 杂志文章,评审
doi:10.1016/j.arr.2009.03.001
更新日期:2009-07-01 00:00:00
abstract::Radical lifespan disparities exist in the animal kingdom. While the ocean quahog can survive for half a millennium, the mayfly survives for less than 48 h. The evolutionary theories of aging seek to explain why such stark longevity differences exist and why a deleterious process like aging evolved. The classical mutat...
journal_title:Ageing research reviews
pub_type: 杂志文章,评审
doi:10.1016/j.arr.2019.100947
更新日期:2019-11-01 00:00:00
abstract::Both cancer and Alzheimer's disease (AD) are emerging as metabolic diseases in which aberrant/dysregulated glucose metabolism and bioenergetics occur, and play a key role in disease progression. Interestingly, an enhancement of glucose uptake, glycolysis and pentose phosphate pathway occurs in both cancer cells and am...
journal_title:Ageing research reviews
pub_type: 杂志文章,评审
doi:10.1016/j.arr.2019.100915
更新日期:2019-08-01 00:00:00
abstract::Neurodegenerative diseases (NDs) cause progressive loss of neurons in nervous system. NDs are categorized as acute NDs such as stroke and head injury, besides chronic NDs including Alzheimer's, Parkinson's, Huntington's diseases, Friedreich's Ataxia, Multiple Sclerosis. The exact etiology of NDs is not understood but ...
journal_title:Ageing research reviews
pub_type: 杂志文章,评审
doi:10.1016/j.arr.2020.101211
更新日期:2021-01-01 00:00:00
abstract::Some of the needs that people with dementia and their informal carers currently perceive as insufficiently met by regular care and support services might be alleviated, or even be met, using modern Information and Communication Technology (ICT). The study described in this paper was designed to provide an insight into...
journal_title:Ageing research reviews
pub_type: 杂志文章,评审
doi:10.1016/j.arr.2007.07.002
更新日期:2007-10-01 00:00:00
abstract::The aging of the human adrenal cortex presents several problems of interest to the cell biologist, as the interplay of changes in growth, differentiation, apoptosis and cellular senescence affect the properties of the tissue over the life span. The human adrenal cortex also presents an interesting case of tumor progre...
journal_title:Ageing research reviews
pub_type: 杂志文章,评审
doi:10.1016/s1568-1637(01)00007-1
更新日期:2002-04-01 00:00:00
abstract::The lysosomal network is the major intracellular proteolytic system accounting for more than 98% of long-lived bulk protein degradation and recycling particularly in tissues such as liver and muscles. Lysosomes are the final destination of intracellular damaged structures, identified and sequestered by the processes o...
journal_title:Ageing research reviews
pub_type: 杂志文章,评审
doi:10.1016/j.arr.2009.05.001
更新日期:2009-07-01 00:00:00