03162nas a2200529 4500008004100000022001400041245010700055210006900162260001300231300001000244490000700254520171700261653003101978653000902009653002202018653001002040653001502050653002702065653002802092653002102120653001102141653002202152653001802174653001802192653001102210653001402221653001102235653000902246653001502255653001402270653002602284653001802310100002402328700002102352700001802373700002402391700002002415700001802435700001902453700002102472700002202493700002402515700001902539700002002558700001802578856003602596 2014 eng d a1758-535X00aSerum carboxymethyl-lysine, disability, and frailty in older persons: the Cardiovascular Health Study.0 aSerum carboxymethyllysine disability and frailty in older person c2014 Jun a710-60 v693 a
BACKGROUND: Advanced glycation endproducts are biologically active compounds that accumulate in disordered metabolism and normal aging. Carboxymethyl-lysine (CML), a ubiquitous human advanced glycation endproduct, has been associated with age-related conditions and mortality. Our objective was to ascertain the relationship between CML and geriatric outcomes (disability and frailty) in a large cohort of older men and women.
METHODS: In 1996-1997, serum CML was measured in 3,373 Cardiovascular Health Study participants (mean age 78.1 ± 4.8 years). Disability, defined as difficulty in any of six activities of daily living, was assessed every 6-12 months for 14 years. Frailty was defined according to five standard criteria at the 1996-1997 visit. Cox proportional hazard models estimated the relationship between CML and incident disability (N = 2,643). Logistic regression models estimated the relationship between CML and prevalent frailty.
RESULTS: Adjusting for multiple potential confounders, higher CML was associated with incident disability (hazard ratio per standard deviation [225 ng/mL] increase: 1.05, 95% CI 1.01-1.11). In men, odds of frailty increased with higher CML values (odds ratio = 1.30 per standard deviation, 95% CI 1.14-1.48), but the relationship was attenuated by adjustment for cognitive status, kidney function, and arthritis. CML was not associated with frailty in women.
CONCLUSIONS: Higher serum CML levels in late life are associated with incident disability and prevalent frailty. Further work is needed to understand CML's value as a risk stratifier, biomarker, or target for interventions that promote healthy aging.
10aActivities of Daily Living10aAged10aAged, 80 and over10aAging10aBiomarkers10aCardiac Rehabilitation10aCardiovascular Diseases10aDisabled Persons10aFemale10aFollow-Up Studies10aFrail Elderly10aHealth Status10aHumans10aIncidence10aLysine10aMale10aPrevalence10aPrognosis10aRetrospective Studies10aUnited States1 aWhitson, Heather, E1 aArnold, Alice, M1 aYee, Laura, M1 aMukamal, Kenneth, J1 aKizer, Jorge, R1 aDjoussé, Luc1 aIx, Joachim, H1 aSiscovick, David1 aTracy, Russell, P1 aThielke, Stephen, M1 aHirsch, Calvin1 aNewman, Anne, B1 aZieman, Susan uhttps://chs-nhlbi.org/node/6243