MicroRNAs modulation and clinical outcomes at 1 year of follow-up in obese patients with pre-diabetes treated with metformin vs. placebo.

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    • Abstract:
      Backgrounds: Obese pre-diabetics over express cytokines that influence myocardial function via microRNAs (miRs) expression. Objectives: To evaluate inflammatory/oxidative stress, miRs' expression and cardiovascular function in obese pre-diabetics assigned to metformin therapy vs. placebo vs. normo-glycemics at 12 months of follow-up. Materials and methods: Eighty-three obese patients after abdominoplastic surgery were divided in pre-diabetics (n 55), normo-glycemics (n 28), and assigned to hypocaloric diet. Pre-diabetics were assigned to metformin (n 23) or to placebo (n 22) plus hypocaloric diet. Results: Obese pre-diabetics in metformin vs. placebo, and obese pre-diabetics with placebo vs. normoglycemics, had significant differences about IMT, MPI, and LVM (p < 0.05). Obese pre-diabetics in metformin vs. placebo showed significant reduction in serum miR-195 and miR-27 (p < 0.05). Obese pre-diabetics in metformin vs. normoglycemics showed higher expression of serum miR-195 and miR-27 (p < 0.05). Finally, we found inverse relation between IMT and insulin, HOMA-IR, miR-195, miR-27; between LVEF and Insulin, HOMA-IR, miR-195 and miR-27. We found inverse correlation between LVM and sirtuin-1, Insulin, HOMA-IR, miR-195 and miR-27, and direct correlation with interleukin-6. MPI inversely linked to miR-195 and miR-27. Conclusions: In obese pre-diabetics', metformin significantly reduces inflammation/oxidative stress, and miR-195 and miR-27, with reduction in LVM, IMT. [ABSTRACT FROM AUTHOR]
    • Abstract:
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