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Skin autofluorescence and carotid intima-media thickness evaluation following bariatric surgery in patients with severe obesity

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SCHOOL OF MEDICINE
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Yavuz, Dilek Gogas
Apaydin, Tugce
Imre, Eren
Uygur, Meliha Melin

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Purpose: Advanced glycation end product (AGE) is a marker of metabolic memory. Accumulated AGEs in skin collagen measured with skin autofluorescence (SAF) was found to be associated with subclinical atherosclerosis. We aimed to evaluate SAF and carotid intima-media thickness (CIMT) and its association with clinical and biochemical parameters in severely obese patients before and after bariatric surgery. Materials and Methods: In this observational study, 432 morbid obese patients evaluated before and after 6 and 12 months of bariatric surgery for metabolic and anthropometric parameters, CIMT and SAF. SAF was assessed in the forearm with an AGE Reader. Results: SAF measurements were higher in diabetic (2.04 ± 0.52 AU) obese patients compared to non-diabetic (1.78 ± 0.40 AU) obese patients (p < 0.0001). Although bariatric surgery-induced weight loss resulted in a decrease in CIMT in the 6th and 12th months compared to baseline, weight loss and metabolic improvements were not associated with a parallel decrease in SAF measurements. SAF measurements were positively correlated with body mass index (r 0.527, p < 0.0001), HbA1c (r 0.362, p < 0.0001), and CIMT (r 0.319, p < 0.0001). Multivariate analysis showed the presence of diabetes (but not BMI, age, and sex) was independently associated with SAF (R2 = 7.62%), and the presence of diabetes, low-density cholesterol, and systolic blood pressure were independently associated with CIMT measurements (R2 = 21.7%). Conclusion: Bariatric surgery-induced weight loss and metabolic improvement were found to be associated with improvement in CIMT, while skin AGE accumulation was not regressed in the first year of surgery.

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Springer

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Surgery

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Obesity Surgery

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10.1007/s11695-020-05077-z

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