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- Klotho levels: association with insulin resistance and albumin-to-creatinine ratio in type 2 diabetic patientsPublication . Silva, Ana Paula; Mendes, Filipa; Pereira, Luisa; Fragoso, André; Baptista Gonçalves, Rui; Santos, Nelio; Rato, Fátima; Neves, Pedro LeãoThe present study aimed at evaluating the relationship between Klotho levels and insulin resistance and albumin-to-creatinine ratio (ACR) in type 2 diabetic patients with CKD. We conducted an observational, cross-sectional study in our outpatient diabetic nephropathy clinic from 2014 to 2016, enrolling a total of 107 type 2 diabetic patients with stage 2-3 CKD, with a mean age of 59 years. Several clinical and laboratorial parameters were evaluated, including those related to mineral and carbohydrate metabolism. The mean eGFR at baseline was 53.2 mL/min, and the mean levels of ACR and Klotho were 181.9 A mu g/mg and 331.1 pg/m, respectively. In the simple linear regression model, Klotho levels were correlated with age, phosphorus, PTH, ACR, HOMA, IL-6, FGF-23, OxLDL, eGFR and vitamin D levels. Applying a multivariate linear regression model, only the ACR, HOMA-IR, FGF-23 and vitamin D independently influenced the Klotho levels. In the generalized linear model, only the Klotho groups were statistically significant as independent variable (p = 0.007). The results show that the group 1 (< 268) compared with group 3 (> 440) had higher odds in the higher ACR (ae181), ORa = 3.429, p = 0.014. There were no statistically significant differences between Klotho groups 2 and 3, and the HOMA-IR obtained showed that group 1 (< 268) had greater odds of HOMA-IR ae2 when compared with group 3 (> 440), ORa = 21.59, p = 0.017. Our results showed that Klotho levels are influenced by FGF23, vitamin D and insulin resistance. This suggests that Klotho levels might be affected by renal function as well as having a relevant role on insulin metabolism and ACR homeostasis.