Changes in glucose‐lipid metabolism, insulin resistance, and inflammatory factors in patients with autoimmune thyroid disease

Abstract Background Autoimmune thyroid disease (AITD) is a common organ‐specific autoimmune disorder, and genetic, environmental, and endogenous factors are responsible for initiation of thyroid autoimmunity. Some AITD patients suffer from a certain degree of glucose‐lipid metabolism disorder. This study aims to explore the changes in glucose‐lipid metabolism, insulin resistance, and inflammatory factors in patients with AITD. Methods A total of 91 patients with Hashimoto's thyroiditis were retrospectively analyzed and divided into hypothyroidism group (n = 42) and normal thyroid group (n = 49), while 50 healthy people were selected as control group. The changes in glucose‐lipid metabolism, insulin resistance, and inflammatory factors in each group were compared, and their correlations with the thyroid function were analyzed. Results The levels of serum interleukin‐6 (IL‐6), tumor necrosis factor‐α (TNF‐α), IL‐12, IL‐10, (FINS), and homeostasis model assessment of insulin resistance (HOMA‐IR) were gradually declined in sequence of hypothyroidism group, normal thyroid group, and control group ( P < 0.05). In hypothyroidism group, the levels of serum‐free triiodothyronine (FT3), free thyroxine (FT4), (TC), triglyceride (TG), and low‐density lipoprotein cholesterol (LDL‐C) were significantly lower than those in normal thyroid group ( P < 0.05), while the level of serum thyroid stimulating hormone (TSH) was significantly higher than that in normal thyroid group ( P < 0.05). However, the fasting blood glucose and 2‐hour postprandial blood glucose levels had no statistically significant differences among the three groups ( P > 0.05). Conclusion Autoimmune thyroid disease patients are prone to fat metabolism disorder, and the serum thyroid hormone level has a close correlation with blood lipid metabolism, insulin metabolism, and inflammatory factors.