scholarly journals Suppression of the gut microbiome ameliorates age‐related arterial dysfunction and oxidative stress in mice

2019 ◽  
Vol 597 (9) ◽  
pp. 2361-2378 ◽  
Author(s):  
Vienna E. Brunt ◽  
Rachel A. Gioscia‐Ryan ◽  
James J. Richey ◽  
Melanie C. Zigler ◽  
Lauren M. Cuevas ◽  
...  
Antioxidants ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 507
Author(s):  
Rosaria Meccariello ◽  
Stefania D’Angelo

Aging and, particularly, the onset of age-related diseases are associated with tissue dysfunction and macromolecular damage, some of which can be attributed to accumulation of oxidative damage. Recently, growing interest has emerged on the beneficial effects of plant-based diets for the prevention of chronic diseases including obesity, diabetes, and cardiovascular disease. Several studies collectively suggests that the intake of polyphenols and their major food sources may exert beneficial effects on improving insulin resistance and related diabetes risk factors, such as inflammation and oxidative stress. They are the most abundant antioxidants in the diet, and their intake has been associated with a reduced aging in humans. Polyphenolic intake has been shown to be effective at ameliorating several age-related phenotypes, including oxidative stress, inflammation, impaired proteostasis, and cellular senescence, both in vitro and in vivo. In this paper, effects of these phytochemicals (either pure forms or polyphenolic-food) are reviewed and summarized according to affected cellular signaling pathways. Finally, the effectiveness of the anti-aging preventive action of nutritional interventions based on diets rich in polyphenolic food, such as the diets of the Blue zones, are discussed.


Antioxidants ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 2
Author(s):  
David Mantle ◽  
Robert A. Heaton ◽  
Iain P. Hargreaves

The ageing brain is characterised by changes at the physical, histological, biochemical and physiological levels. This ageing process is associated with an increased risk of developing a number of neurological disorders, notably Alzheimer’s disease and Parkinson’s disease. There is evidence that mitochondrial dysfunction and oxidative stress play a key role in the pathogenesis of such disorders. In this article, we review the potential therapeutic role in these age-related neurological disorders of supplementary coenzyme Q10, a vitamin-like substance of vital importance for normal mitochondrial function and as an antioxidant. This review is concerned primarily with studies in humans rather than in vitro studies or studies in animal models of neurological disease. In particular, the reasons why the outcomes of clinical trials supplementing coenzyme Q10 in these neurological disorders is discussed.


2014 ◽  
Vol 55 (3) ◽  
pp. 155-161 ◽  
Author(s):  
Shigekazu Takemura ◽  
Hiroshi Ichikawa ◽  
Yuji Naito ◽  
Tomohisa Takagi ◽  
Toshikazu Yoshikawa ◽  
...  

2020 ◽  
Vol 57 ◽  
pp. 100982 ◽  
Author(s):  
Jiao Luo ◽  
Kevin Mills ◽  
Saskia le Cessie ◽  
Raymond Noordam ◽  
Diana van Heemst

Aging Cell ◽  
2016 ◽  
Vol 16 (1) ◽  
pp. 17-26 ◽  
Author(s):  
Lisa A. Lesniewski ◽  
Douglas R. Seals ◽  
Ashley E. Walker ◽  
Grant D. Henson ◽  
Mark W. Blimline ◽  
...  

2015 ◽  
Vol 2015 ◽  
pp. 1-17 ◽  
Author(s):  
Giuseppe Verdile ◽  
Kevin N. Keane ◽  
Vinicius F. Cruzat ◽  
Sandra Medic ◽  
Miheer Sabale ◽  
...  

Type 2 diabetes (T2DM), Alzheimer’s disease (AD), and insulin resistance are age-related conditions and increased prevalence is of public concern. Recent research has provided evidence that insulin resistance and impaired insulin signalling may be a contributory factor to the progression of diabetes, dementia, and other neurological disorders. Alzheimer’s disease (AD) is the most common subtype of dementia. Reduced release (for T2DM) and decreased action of insulin are central to the development and progression of both T2DM and AD. A literature search was conducted to identify molecular commonalities between obesity, diabetes, and AD. Insulin resistance affects many tissues and organs, either through impaired insulin signalling or through aberrant changes in both glucose and lipid (cholesterol and triacylglycerol) metabolism and concentrations in the blood. Although epidemiological and biological evidence has highlighted an increased incidence of cognitive decline and AD in patients with T2DM, the common molecular basis of cell and tissue dysfunction is rapidly gaining recognition. As a cause or consequence, the chronic inflammatory response and oxidative stress associated with T2DM, amyloid-β(Aβ) protein accumulation, and mitochondrial dysfunction link T2DM and AD.


Blood ◽  
2010 ◽  
Vol 116 (21) ◽  
pp. SCI-2-SCI-2
Author(s):  
Rafael de Cabo

Abstract Abstract SCI-2 A prominent manifestation of aging is a reduced ability to respond to environmental stressors, including heat and oxidative stress. Reduced stress tolerance and decreased ability to maintain homeostasis are at least partially responsible for the increased morbidity and mortality that occurs with advancing age. The age-related attenuation of stress pathways and increased expression of stress-response genes with aging are examples of the growing body of evidence linking reduced stress responsiveness to aging. In 1935, McCay and colleagues first reported that reducing the caloric intake of rodents could significantly lengthen their mean and maximal life span, slowing down basic aging processes. The effect of calorie restriction (CR) on delaying aging has been replicated in many animal species including nonhuman primates, although in these, potential life span alterations cannot be ascertained for several more years due to their longevity CR causes a reduction in body weight, tissue growth, blood glucose, insulin levels and body temperature. In addition, CR prevents the age-related decline in tolerance to different stressors such as oxidative and heat, and the age-related reduction in expression of protective heat shock and oxidative stress proteins. While CR is the only intervention that has consistently been shown to increase maximum life span and prevent or delay the onset of age-associated pathophysiological changes in laboratory rodents, the underlying mechanisms remain elusive. Using calorie restriction (CR) as their benchmark research tool, gerontologists are making progress in identifying dietary and pharmacologic interventions that may be applicable to retarding aging processes in humans. Disclosures: No relevant conflicts of interest to declare.


animal ◽  
2018 ◽  
Vol 12 (3) ◽  
pp. 559-568 ◽  
Author(s):  
S. Vince ◽  
I. Žura Žaja ◽  
M. Samardžija ◽  
I. Majić Balić ◽  
M. Vilić ◽  
...  

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