Figure 3.
Doxycycline improves serum biochemical profiles in db/db mice. After food and water fasting for a minimum of 10 h, mice were anesthetized by intraperitoneal injection of pentobarbital (100 mg/kg body weight) before blood samples collection. Serum parameters were determined using an automatic Unicel DxC 800 Chemistry Analyzer (Beckman Coulter, Brea, CA) with respective reagents (Beckman Coulter) in the First Affiliated Hospital of Shantou University for (A) Total cholesterol (TC), (B) triglyceride (TG), (C) HDL-cholesterol, (D) LDL-cholesterol, (E) fasting blood glucose (FBG), (F) insulin (FSI), (G) The homeostasis model assessment-insulin resistance (HOMA-IR) index was calculated using the following equation: HOMA-IR = FSI (mU/L) x FSG (mm)/22.4, (H) Serum levels of AGEs were determined by ELISA. *p < 0.05, **p < 0.01, ***p < 0.001. n = 10.