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Ageing Research Reviews

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https://www.readbyqxmd.com/read/28065806/-tagging-along-memories-in-aging-synaptic-tagging-and-capture-mechanisms-in-the-aged-hippocampus
#1
REVIEW
Mahesh Shivarama Shetty, Sreedharan Sajikumar
Aging is accompanied by a general decline in the physiological functions of the body with the deteriorating organ systems. Brain is no exception to this and deficits in cognitive functions are quite common in advanced aging. Though a variety of age-related alterations are observed in the structure and function throughout the brain, certain regions show selective vulnerability. Medial temporal lobe, especially the hippocampus, is one such preferentially vulnerable region and is a crucial structure involved in the learning and long-term memory functions...
January 5, 2017: Ageing Research Reviews
https://www.readbyqxmd.com/read/28025174/biomarkers-associated-with-sedentary-behaviour-in-older-adults-a-systematic-review
#2
REVIEW
Katharina Wirth, Jochen Klenk, Simone Brefka, Dhayana Dallmeier, Kathrin Faehling, Marta Roqué I Figuls, Mark A Tully, Maria Giné-Garriga, Paolo Caserotti, Antoni Salvà, Dietrich Rothenbacher, Michael Denkinger, Brendon Stubbs
OBJECTIVE: Pathomechanisms of sedentary behavior (SB) are unclear. We conducted a systematic review to investigate the associations between SB and various biomarkers in older adults. METHODS: Electronic databases were searched (MEDLINE, EMBASE, CINAHL, AMED) up to July 2015 to identify studies with objective or subjective measures of SB, sample size≥50, mean age≥60years and accelerometer wear time ≥3 days. Methodological quality was appraised with the CASP tool...
December 23, 2016: Ageing Research Reviews
https://www.readbyqxmd.com/read/28025173/does-music-therapy-enhance-behavioral-and-cognitive-function-in-elderly-dementia-patients-a-systematic-review-and-meta-analysis
#3
REVIEW
Yingshi Zhang, Jiayi Cai, Li An, Fuhai Hui, Tianshu Ren, Hongda Ma, Qingchun Zhao
Demographic aging is a worldwide phenomenon, cognitive and behavioral impairment is becoming global burden of nerve damage. However, the effect of pharmacological treatment is not satisfying. Therefore, we analyzed the efficacy of music therapy in elderly dementia patients, and if so, whether music therapy can be used as first-line non-pharmacological treatment. A comprehensive literature search was performed on PubMed, EMbase and the Cochrane Library from inception to September 2016. A total of 34 studies (42 analyses, 1757 subjects) were included; all of them had an acceptable quality based on the PEDro and CASP scale scores...
December 23, 2016: Ageing Research Reviews
https://www.readbyqxmd.com/read/28017880/aberrant-spontaneous-low-frequency-brain-activity-in-amnestic-mild-cognitive-impairment-a-meta-analysis-of-resting-state-fmri-studies
#4
REVIEW
PingLei Pan, Lin Zhu, TingTing Yu, HaiCun Shi, Bing Zhang, Ruomeng Qin, Xiaolei Zhu, Lai Qian, Hui Zhao, Hong Zhou, Yun Xu
Recent resting-state functional magnetic resonance imaging (rs-fMRI) studies have provided strong evidence of abnormal spontaneous brain activity in amnestic mild cognitive impairment (aMCI). However, the conclusions have been inconsistent. A meta-analysis of whole-brain rs-fMRI studies that measured differences in the amplitude of low-frequency fluctuations (ALFF) between aMCI patients and healthy controls was conducted using the Seed-based d Mapping software package. Twelve studies reporting 14 datasets were included in the meta-analysis...
December 23, 2016: Ageing Research Reviews
https://www.readbyqxmd.com/read/28017879/circadian-rhythms-time-restricted-feeding-and-healthy-aging
#5
REVIEW
Emily N C Manoogian, Satchidananda Panda
Circadian rhythms optimize physiology and health by temporally coordinating cellular function, tissue function, and behavior. These endogenous rhythms dampen with age and thus compromise temporal coordination. Feeding-fasting patterns are an external cue that profoundly influence the robustness of daily biological rhythms. Erratic eating patterns can disrupt the temporal coordination of metabolism and physiology leading to chronic diseases that are also characteristic of aging. However, sustaining a robust feeding-fasting cycle, even without altering nutrition quality or quantity, can prevent or reverse these chronic diseases in experimental models...
December 23, 2016: Ageing Research Reviews
https://www.readbyqxmd.com/read/28017881/hiv-associated-cellular-senescence-a-contributor-to-accelerated-aging
#6
REVIEW
Justin Cohen, Claudio Torres
Due to the advent of antiretroviral therapy HIV is no longer a terminal disease and the HIV infected patients are becoming increasingly older. While this is a major success, with increasing age comes an increased risk for disease. The age-related comorbidities that HIV infected patients experience suggest that they suffer from accelerated aging. One possible contributor to this accelerated aging is cellular senescence, an age-associated response that can occur prematurely in response to stress, and that is emerging as a contributor to disease and aging...
December 22, 2016: Ageing Research Reviews
https://www.readbyqxmd.com/read/28007498/dietary-restriction-and-lifespan-lessons-from-invertebrate-models
#7
REVIEW
Pankaj Kapahi, Matt Kaeberlein, Malene Hansen
Dietary restriction (DR) is the most robust environmental manipulation known to increase active and healthy lifespan in many species. Despite differences in the protocols and the way DR is carried out in different organisms, conserved relationships are emerging among multiple species. Elegant studies from numerous model organisms are further defining the importance of various nutrient-signaling pathways including mTOR (mechanistic target of rapamycin), insulin/IGF-1-like signaling and sirtuins in mediating the effects of DR...
December 19, 2016: Ageing Research Reviews
https://www.readbyqxmd.com/read/27903442/are-micrornas-true-sensors-of-ageing-and-cellular-senescence
#8
REVIEW
Justin Williams, Flint Smith, Subodh Kumar, Murali Vijayan, P Hemachandra Reddy
All living beings are programmed to death due to aging and age-related processes. Aging is a normal process of every living species. While all cells are inevitably progressing towards death, many disease processes accelerate the aging process, leading to senescence. Pathologies such as Alzheimer's disease, Parkinson's disease, multiple sclerosis, amyotrophic lateral sclerosis, Huntington's disease, cardiovascular disease, cancer, and skin diseases have been associated with deregulated aging. Healthy aging can delay onset of all age-related diseases...
November 27, 2016: Ageing Research Reviews
https://www.readbyqxmd.com/read/27884595/melatonin-protection-against-age-related-cardiac-pathology
#9
REVIEW
Gaia Favero, Lorenzo Franceschetti, Barbara Buffoli, Mohammed H Moghadasian, Russel J Reiter, Luigi F Rodella, Rita Rezzani
Aging is a complex and progressive process that involves physiological and metabolic deterioration in every organ and system. Cardiovascular diseases are one of the most common causes of mortality and morbidity among elderly subjects worldwide. Most age-related cardiovascular disorders can be influenced by modifiable behaviours such as a healthy diet rich in fruit and vegetables, avoidance of smoking, increased physical activity and reduced stress. The role of diet in prevention of various disorders is a well-established factor, which has an even more important role in the geriatric population...
November 22, 2016: Ageing Research Reviews
https://www.readbyqxmd.com/read/27876574/the-emerging-role-of-ecm-crosslinking-in-t-cell-mobility-as-a-hallmark-of-immunosenescence-in-humans
#10
REVIEW
Jean-Francois Moreau, Thomas Pradeu, Andrea Grignolio, Christine Nardini, Filippo Castiglione, Paolo Tieri, Miriam Capri, Stefano Salvioli, Jean-Luc Taupin, Paolo Garagnani, Claudio Franceschi
Immunosenescence is thought to result from cellular aging and to reflect exposure to environmental stressors and antigens, including cytomegalovirus (CMV). However, not all of the features of immunosenescence are consistent with this view, and this has led to the emergence of the sister theory of "inflammaging". The recently discovered diffuse tissue distribution of resident memory T cells (TRM) which don't recirculate, calls these theories into question. These cells account for most T cells residing in barrier epithelia which sit in and travel through the extracellular matrix (ECM)...
November 19, 2016: Ageing Research Reviews
https://www.readbyqxmd.com/read/27876573/stem-cell-therapies-in-age-related-neurodegenerative-diseases-and-stroke
#11
REVIEW
Yuan Wang, Xunming Ji, Rehana K Leak, Fenghua Chen, Guodong Cao
Aging, a complex process associated with various structural, functional and metabolic changes in the brain, is an important risk factor for neurodegenerative diseases and stroke. These diseases share similar neuropathological changes, such as the formation of misfolded proteins, oxidative stress, loss of neurons and synapses, dysfunction of the neurovascular unit (NVU), reduction of self-repair capacity, and motor and/or cognitive deficiencies. In addition to gray matter dysfunction, the plasticity and repair capacity of white matter also decrease with aging and contribute to neurodegenerative diseases...
November 19, 2016: Ageing Research Reviews
https://www.readbyqxmd.com/read/27865980/aging-of-cerebral-white-matter
#12
REVIEW
Huan Liu, Yuanyuan Yang, Yuguo Xia, Wen Zhu, Rehana K Leak, Zhishuo Wei, Jianyi Wang, Xiaoming Hu
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, WM undergoes a series of changes during the process of aging. WM malfunction can induce serious neurobehavioral and cognitive impairments. Thus, age-related changes in WM may contribute to the functional decline observed in the elderly...
November 16, 2016: Ageing Research Reviews
https://www.readbyqxmd.com/read/27836705/arterial-ageing-major-nutritional-and-life-style-effects
#13
REVIEW
Theodore G Papaioannou, Kalliopi Karatzi, Theodora Psaltopoulou, Dimitrios Tousoulis
Arterial ageing is a key mechanism underling the development and progression of cardiovascular (CV) and other diseases. New technologies allow the non-invasive assessement of various biomechanical and biological aspects of arterial ageing. We discuss a few major factors in respect to arterial ageing pathophysiology, methods of assessment and some important nutritional and life-style parameters that substantially affect arterial ageing.
November 9, 2016: Ageing Research Reviews
https://www.readbyqxmd.com/read/27836706/effects-of-age-on-force-steadiness-a-literature-review-and-meta-analysis
#14
REVIEW
Nathalie M C W Oomen, Jaap H van Dieën
The variability of force is indicative of the biological variability inherent in the human motor system. Previous literature showed inconsistent findings of the effect of age on the variability of force and hence a systematic review was performed. Twenty studies were included in this systematic review, of which twelve provided sufficient data to determine effect sizes for the effect of age. After determining the pooled effect size, the effect of sample size on dichotomized effect sizes (significant vs. non-significant) was determined...
November 8, 2016: Ageing Research Reviews
https://www.readbyqxmd.com/read/27829173/multiple-pathways-of-sirt6-at-the-crossroads-in-the-control-of-longevity-cancer-and-cardiovascular-diseases
#15
REVIEW
Milena Vitiello, Alberto Zullo, Luigi Servillo, Francesco Paolo Mancini, Adriana Borriello, Alfonso Giovane, Fulvio Della Ragione, Nunzia D'Onofrio, Maria Luisa Balestrieri
Sirtuin 6 (SIRT6) is a member of the sirtuin family NAD(+)-dependent deacetylases with multiple roles in controlling organism homeostasis, lifespan, and diseases. Due to its complex and opposite functional roles, this sirtuin is considered a two-edged sword in health and disease. Indeed, SIRT6 improves longevity, similarly to the founding yeast member, silent information regulator-2 (Sir2), and modulates genome stability, telomere integrity, transcription, and DNA repair. Its deficiency is associated with chronic inflammation, diabetes, cardiac hypertrophy, obesity, liver dysfunction, muscle/adipocyte disorders, and cancer...
November 6, 2016: Ageing Research Reviews
https://www.readbyqxmd.com/read/27829172/disordered-app-metabolism-and-neurovasculature-in-trauma-and-aging-combined-risks-for-chronic-neurodegenerative-disorders
#16
REVIEW
Milos D Ikonomovic, Zhiping Mi, Eric E Abrahamson
Traumatic brain injury (TBI), advanced age, and cerebral vascular disease are factors conferring increased risk for late onset Alzheimer's disease (AD). These conditions are also related pathologically through multiple interacting mechanisms. The hallmark pathology of AD consists of pathological aggregates of amyloid-β (Aβ) peptides and tau proteins. These molecules are also involved in neuropathology of several other chronic neurodegenerative diseases, and are under intense investigation in the aftermath of TBI as potential contributors to the risk for developing AD and chronic traumatic encephalopathy (CTE)...
November 6, 2016: Ageing Research Reviews
https://www.readbyqxmd.com/read/27829171/metal-ions-influx-is-a-double-edged-sword-for-the-pathogenesis-of-alzheimer-s-disease
#17
REVIEW
Pu Wang, Zhan-You Wang
Alzheimer's disease (AD) is a common form of dementia in aged people, which is defined by two pathological characteristics: β-amyloid protein (Aβ) deposition and tau hyperphosphorylation. Although the mechanisms of AD development are still being debated, a series of evidence supports the idea that metals, such as copper, iron, zinc, magnesium and aluminium, are involved in the pathogenesis of the disease. In particular, the processes of Aβ deposition in senile plaques (SP) and the inclusion of phosphorylated tau in neurofibrillary tangles (NFTs) are markedly influenced by alterations in the homeostasis of the aforementioned metal ions...
November 6, 2016: Ageing Research Reviews
https://www.readbyqxmd.com/read/27825897/the-senescence-accelerated-mouse-prone-8-samp8-a-novel-murine-model-for-cardiac-aging
#18
REVIEW
Vengadeshprabhu Karuppagounder, Somasundaram Arumugam, Sahana S Babu, Suresh S Palaniyandi, Kenichi Watanabe, John P Cooke, Rajarajan A Thandavarayan
Because cardiovascular disease remains the major cause of mortality and morbidity world-wide, there remains a compelling need for new insights and novel therapeutic avenues. In this regard, the senescence-accelerated mouse prone 8 (SAMP8) line is a particularly good model for studying the effects of aging on cardiovascular health. Accumulating evidence suggests that this model may shed light on age-associated cardiac and vascular dysfunction and disease. These animals manifest evidence of inflammation, oxidative stress and adverse cardiac remodeling that may recapitulate processes involved in human disease...
November 5, 2016: Ageing Research Reviews
https://www.readbyqxmd.com/read/27818249/the-origin-of-life-at-the-origin-of-ageing
#19
Antonio Currais
At first glance, the ageing of unicellular organisms would appear to be different from the ageing of complex, multicellular organisms. In an attempt to describe the nature of ageing in diverse organisms, the intimate links between the origins of life and ageing are examined. Departing from Leslie Orgel's initial ideas on why organisms age, it is then discussed how the potentially detrimental events characteristic of ageing are continuous, cell-autonomous and universal to all organisms. The manifestation of these alterations relies on the balance between their production and cellular renewal...
November 3, 2016: Ageing Research Reviews
https://www.readbyqxmd.com/read/27810402/impact-of-intermittent-fasting-on-health-and-disease-processes
#20
REVIEW
Mark P Mattson, Valter D Longo, Michelle Harvie
Humans in modern societies typically consume food at least three times daily, while laboratory animals are fed ad libitum. Overconsumption of food with such eating patterns often leads to metabolic morbidities (insulin resistance, excessive accumulation of visceral fat, etc.), particularly when associated with a sedentary lifestyle. Because animals, including humans, evolved in environments where food was relatively scarce, they developed numerous adaptations that enabled them to function at a high level, both physically and cognitively, when in a food-deprived/fasted state...
October 31, 2016: Ageing Research Reviews
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