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1.
Nutr Metab Cardiovasc Dis ; 32(11): 2526-2533, 2022 11.
Article in English | MEDLINE | ID: mdl-36064683

ABSTRACT

BACKGROUND AND AIM: Advanced glycation end products are involved in age-related multisystem decline. They accumulate in body tissues with age, diabetes and chronic kidney disease (CKD), and can be measured non-invasively by the skin autofluorescence (SAF). We studied the relation between SAF and later mortality in old adults. METHODS AND RESULTS: The SAF was measured using an AGE-Reader in 451 individuals from the general population aged over 75 years, and all-cause mortality was assessed during an average follow-up of 6.4 years. The association between SAF and mortality was analyzed using a multivariate Cox survival model, adjusted for age and gender. Analyses were further adjusted for diabetes and stratified on the presence of CKD due to its interaction with SAF for the risk of mortality. Participants were 82 years old on average (SD 4.1). Their mean SAF was 2.8 AU (SD 0.6). One hundred and forty-four individuals (31.9%) died during the follow-up. Adjusted for age and gender, SAF was associated with an increased risk of all-cause mortality (HR 1.44, 95%CI: 1.14-1.82 for a one-AU increase of SAF). The association was no longer significant after adjustment for diabetes. However, after stratification for the presence of CKD, higher SAF was associated with an increased risk of all-cause mortality in the participants with CKD at baseline (HR 1.68, 95%CI: 1.11-2.55), whereas there was no association among participants without CKD (HR 0.95, 95%CI: 0.63-1.44). CONCLUSION: Skin autofluorescence is associated with increased all-cause mortality in older adults already suffering from CKD.


Subject(s)
Diabetes Mellitus , Renal Insufficiency, Chronic , Aged , Aged, 80 and over , Diabetes Mellitus/diagnosis , Glycation End Products, Advanced , Humans , Proportional Hazards Models , Skin
2.
J Diabetes Complications ; 36(8): 108234, 2022 08.
Article in English | MEDLINE | ID: mdl-35752528

ABSTRACT

OBJECTIVE: In long-lasting diabetes, a dramatic reduction of HbA1c can precede adverse events such as worsening retinopathies or painful neuropathies. We have now analyzed its possible link with later cardiovascular events in subjects with type 2 diabetes, according to their long-term glucose exposure evaluated by skin autofluorescence (SAF) measured with an AGE-READER (Diagnoptics, Groningen, The Netherland). RESEARCH DESIGN AND METHODS: We studied retrospectively a cohort of patients hospitalized for uncontrolled and/or complicated type 2 diabetes from 2009 to 2017. A previous dramatic reduction of HbA1c was defined by more than -1.5 %/4 months, and later cardiovascular events as myocardial infarction, stroke, revascularization procedures, and cardiovascular-related death. Survival analyses were performed before and after categorizing the subjects for their SAF. RESULTS: The 386 subjects were 57.5 % men, 62 ± 9 years old, with a 14 ± 9 years duration of diabetes, most were treated by insulin (63.7 %). The dramatic HbA1c reducers (-3.0 ± 1.5 %) represented 16.5 % of the population. During the 51 months (IQR: 30-71) of follow-up, 53 cardiovascular events occurred and were related to the SAF (2.70 ± 0.64 AUs). Linkage was established between the SAF, the reduction of HbA1c and the cardiovascular events (p = 0.017). With a SAF higher than the median (2.65 AUs), the dramatic reduction of HbA1c was related to later cardiovascular events (HR: 3.84, 95%CI: 1.68-8.76). CONCLUSIONS: A dramatic decline of HbA1c leads to a higher risk of cardiovascular events in hospitalized subjects with type 2 diabetes and a high long-term glucose exposure.


Subject(s)
Cardiovascular Diseases , Diabetes Mellitus, Type 2 , Aged , Cardiovascular Diseases/complications , Cardiovascular Diseases/epidemiology , Diabetes Mellitus, Type 2/complications , Diabetes Mellitus, Type 2/drug therapy , Female , Glucose , Glycated Hemoglobin/analysis , Glycation End Products, Advanced , Humans , Male , Middle Aged , Retrospective Studies , Skin/chemistry
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