scholarly journals METABOLITES ASSOCIATED WITH HIGH VERSUS LOW WALKING ABILITY AMONG COMMUNITY-DWELLING OLDER MEN AND WOMEN

2019 ◽  
Vol 3 (Supplement_1) ◽  
pp. S641-S642
Author(s):  
Megan M Marron ◽  
Stacy G Wendell ◽  
George C Tseng ◽  
Robert M Boudreau ◽  
Adam J Santanasto ◽  
...  

Abstract Low walking ability is highly prevalent with advanced age and associated with a higher risk of major adverse health outcomes. Metabolomics may help better characterize differences among older adults with vastly different walking abilities and provide insight into altered metabolic processes underlying age-related declines in physical functioning. Here, we sought to identify metabolites associated with high versus low walking ability using a nested case-control study of 120 community-dwelling adults ages 79-95 (40% men, 10% black) from the Cardiovascular Health Study (CHS) All Stars study. Participants with high versus low walking ability were matched one-to-one on age, gender, race, and fasting time. Using liquid chromatography-mass spectrometry, 569 metabolites were identified in overnight-fasting plasma. High versus low walking ability was defined as the best versus worst tertile of gait speed (≥0.9 versus <0.7 meters/second) and Walking Ability Index scores (7-9 versus 0-1). Ninety-six metabolites were associated with walking ability extremes (p<0.05, false discovery rate<30%), where 24% were triacylglycerols. Triacylglycerols containing mostly polyunsaturated fatty acids (e.g., omega-3) were higher, whereas those containing mostly saturated/monounsaturated fatty acids were lower among those with high versus low walking ability. Arginine and proline metabolism was a top pathway identified. Body mass index partly explained the association between a subset of metabolites and walking ability extremes. These findings may partly reflect pathways implicating modifiable risk factors including excess dietary lipids and lack of physical activity, which contribute to obesity and cause further alterations in metabolic pathways, potentially leading to age-related declines in walking ability in this cohort.

2012 ◽  
pp. 1-5
Author(s):  
K.P. ROLAND ◽  
K.M.D. CORNETT ◽  
O. THEOU ◽  
J.M. JAKOBI ◽  
G.R. JONES

Background: Females with Parkinson’s disease (PD) are at greater risk of frailty than males. Little is known about how age and disease-related characteristics influence frailty in females with PD because frailty studies often exclude persons with underlying neurological pathologies. Objective: To determine age and diseaserelated characteristics that best explain physical frailty in community-dwelling females with and without PD. Design & Measurement: Correlation coefficients described relationships between PD-related characteristics and physical frailty phenotype criteria (Cardiovascular Health Study). Regression analysis identified associations between disease-related characteristics and frailty in non-PD and PD females. Setting: Community-dwelling. Participants: Females with mild to moderate PD (n = 17, mean age = 66 ± 8.5 years) and non-PD (n = 18, mean age = 72 ± 13.2 years) participated. Results: Daily carbidopa-levodopa dose best explained frailty in PD females (β = 0.5), whereas in non-PD females, age (β = 0.7) and comorbidity (β = 0.5) were most associated with frailty. Conclusions: Dopaminergic medication explained frailty in PD and not measures of disease progression (i.e. severity, duration). In females without PD age-related accumulation of comorbidities resulted in greater risk of frailty. This indicates dopaminergic management of PD symptoms may better reflect frailty in females with PD than disease severity or duration. These data suggest the influence of underlying frailty should be considered when managing neurological conditions. Understanding how frailty concurrently exists with PD and how these conditions progress within the aging female will facilitate future care management.


Author(s):  
Doyeon Kim ◽  
Chang Won Won ◽  
Yongsoon Park

Abstract Background Inflammation is a major risk factor for frailty, but n-3 polyunsaturated fatty acids (PUFA) has been suggested as an anti-inflammatory agent. The present study aimed to investigate the hypothesis that the higher erythrocyte levels of long-chain n-3 PUFA were associated with lower odds of frailty and frailty criterion. Methods Cross-sectional analysis from the Korean Frailty and Aging Cohort Study, a total of 1,435 people aged 70–84 years were included. Sex- and age-stratified community residents, drawn in urban and rural regions nationwide, were eligible for participation in the study. All participants were categorized as frail and nonfrail according to the Cardiovascular Health Study index. Results The likelihood of frailty was inversely associated with the erythrocyte levels of eicosapentaenoic acid (EPA; odds ratio [OR] per unit 0.33; 95% confidence interval [CI] 0.14–0.77; p for trend = .002) and docosahexaenoic acid (DHA; OR per unit 0.42; 95% CI 0.20–0.87; p for trend = .018). Among each frailty criterion, the likelihood of slow walking speed was associated with erythrocyte levels of EPA and DHA, and the likelihood of exhaustion was inversely associated with the erythrocyte levels of DHA. Conclusions The present study showed that the frailty and frailty criterion were significantly associated with lower erythrocyte levels of long-chain n-3 PUFA, suggesting that lower n-3 PUFA could be a marker for the risk of frailty.


2017 ◽  
Vol 11 (1) ◽  
pp. 126-135.e5 ◽  
Author(s):  
Graciela E. Delgado ◽  
Bernhard K. Krämer ◽  
Stefan Lorkowski ◽  
Winfried März ◽  
Clemens von Schacky ◽  
...  

2016 ◽  
Vol 252 ◽  
pp. 175-181 ◽  
Author(s):  
Marcus E. Kleber ◽  
Graciela E. Delgado ◽  
Stefan Lorkowski ◽  
Winfried März ◽  
Clemens von Schacky

2019 ◽  
Vol 78 (4) ◽  
pp. 526-531 ◽  
Author(s):  
William S. Harris ◽  
Francis B. Zotor

The purpose of this review is to consider the effects of the long-chain n-3 fatty acids found in marine foods, EPA and DHA, on risk for CVD, particularly fatal outcomes. It will examine both epidemiological and randomised controlled trial findings. The former studies usually examine associations between the dietary intake or the blood levels of EPA + DHA and CVD outcomes or, on occasion, total mortality. For example, our studies in the Framingham Heart Study and in the Women's Health Initiative Memory Study have demonstrated significant inverse relations between erythrocyte EPA + DHA levels (i.e. the Omega-3 Index) and total mortality. Recent data from the Cardiovascular Health Study reported the same relations between plasma phospholipid n-3 levels and overall healthy ageing. As regards randomised trials, studies in the 1990s and early 2000s were generally supportive of a cardiovascular benefit for fish oils (which contain EPA + DHA), but later trials were generally not able to duplicate these findings, at least for total CVD events. However, when restricted to effects on risk for fatal events, meta-analyses have shown consistent benefits for n-3 treatment. Taken together, the evidence is strong for a cardioprotective effect of EPA + DHA, especially when consumed in sufficient amounts to raise blood levels into healthy ranges. Establishing target EPA + DHA intakes to reduce risk for cardiovascular death is a high priority.


Circulation ◽  
2013 ◽  
Vol 127 (suppl_12) ◽  
Author(s):  
Fumiaki Imamura ◽  
Rozenn N Lemaitre ◽  
Irena King ◽  
Xiaoling Song ◽  
David S Siscovick ◽  
...  

Background: Decades-old animal experiments demonstrated that consumption of large amounts of long-chain monounsaturated fatty acids (LCMUFA, 22:1 and 24:1 fatty acids) caused cardiotoxicity. We recently found that plasma phospholipid 22:1 and 24:1 were associated with higher incidence of congestive heart failure (CHF) in two independent cohorts: the Cardiovascular Health Study (CHS) and the Atherosclerosis Risk in Communities Study. However, their association with incident CHD is unknown. Aim: to investigate association of plasma phospholipid 22:1 and 24:1 levels with incident CHD. Methods: The study included 3,221 adults free of CHD (age=74.9±5.2) in CHS in whom plasma phospholipid LCMUFA were measured in 1992. Incident CHD events from 1992 to 2006 were centrally adjudicated, and we assessed total CHD, including fatal CHD (fatal MI and other CHD deaths) and non-fatal MI. We examined prospective associations of LCMUFA with incident CHD using Cox proportional hazards. We further evaluated potential confounding or mediation by baseline risk factors and incident CHF. Results: Mean±SD phospholipid levels of 22:1 and 24:1 were 0.03±0.01 and 1.96±0.44 percent of total fatty acids. During 34,776 person-years, 628 incident CHD events occurred, including 309 fatal CHD and 401 non-fatal MIs. After multivariable adjustment, higher levels of both 22:1 and 24:1 were associated with higher risk of total incident CHD. Hazard ratios (95% CI) for quintiles 5 vs. 1 of 22:1 and 24:1 levels were 1.48 (1.07-2.06, p trend=0.005) and 1.65 (1.16-2.34, p trend=0.001). The associations with CHD were largely specific to fatal CHD rather than non-fatal MI (Figure). These associations did not change after adjustment for incident CHF and baseline risk factors including circulating lipids, blood pressure, and inflammatory markers. Conclusions: Higher levels of circulating 22:1 and 24:1 LCMUFA were associated with higher incidence of CHD, in particular fatal CHD, supporting the possibility of cardiotoxicity by current levels of LCMUFA exposure.


2010 ◽  
Vol 7 (1) ◽  
pp. 78-86 ◽  
Author(s):  
Wendy C. Stephen ◽  
Ian Janssen

Background:Little is known about the effects of physical activity on weight loss in older adults.Methods:Participants included 4512 community-dwelling older (≥65 yr) men and women from the Cardiovascular Health Study. Physical activity (PA) was determined from a questionnaire at baseline and subjects were divided into sex-specific PA quartiles. Weight was measured at baseline and annually over the 8 years of follow-up. The influence of PA on longitudinal changes in body weight was examined using mixed models while adjusting for lifestyle variables, sociodemographic characteristics, and disease status.Results:Body weight declined in a curvilinear manner over time with accelerated weight loss occurring in the final years. Over the 8 yr follow-up period, the least active PA quartile lost 2.72 kg. Weight loss was attenuated by 0.55 kg (20%, P = .057), 0.80 kg (29%, P = .05), and 0.69 kg (25%, P = .016) within the second through fourth PA quartiles. The effects of PA did not differ by gender, but increased with advancing age.Conclusion:Participation in modest amounts of PA attenuated age-related weight loss by approximately 25% with little additional benefit observed at higher PA levels. This finding adds to the growing number of health outcomes that are positively affected by PA.


2020 ◽  
Vol 75 (12) ◽  
pp. 2371-2378
Author(s):  
Megan M Marron ◽  
Stacy G Wendell ◽  
Robert M Boudreau ◽  
Clary B Clish ◽  
Adam J Santanasto ◽  
...  

Abstract Background Low walking ability is highly prevalent with advancing age and predicts major health outcomes. Metabolomics may help to better characterize differences in walking ability among older adults, providing insight into potentially altered molecular processes underlying age-related decline in functioning. We sought to identify metabolites and metabolic pathways associated with high versus low walking ability among 120 participants ages 79–95 from the CHS All Stars study. Methods Using a nested case–control design, 60 randomly selected participants with low walking ability were matched one-to-one on age, gender, race, and fasting time with 60 participants with high walking ability. High versus low walking ability was defined as being in the best versus worst tertiles for both gait speed (≥0.9 vs <0.7 m/s) and the Walking Ability Index (7–9 vs 0–1). Using liquid chromatography-mass spectrometry, 569 metabolites were identified in overnight-fasting plasma. Results Ninety-six metabolites were associated with walking ability, where 24% were triacylglycerols. Triacylglycerols that were higher among those with high walking ability consisted mostly of polyunsaturated fatty acids, whereas triacylglycerols that were lower among those with high walking ability consisted mostly of saturated or monounsaturated fatty acids. Body composition partly explained associations between some metabolites and walking ability. Proline and arginine metabolism was a top pathway associated with walking ability. Conclusion These results may partly reflect pathways of modifiable risk factors, including excess dietary lipids and lack of physical activity, contributing to obesity and further alterations in metabolic pathways that lead to age-related decline in walking ability in this older adult cohort.


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