Association of circulating proinflammatory marker, leucine‐rich‐α2‐glycoprotein (LRG1), following metabolic/bariatric surgery

Background Obesity confers substantial excess risk for morbidity and mortality, especially for type 2 diabetes (T2D). Leucine‐rich‐α2‐glycoprotein 1 (LRG1), a novel proinflammatory factor, was recently reported to be higher in patients with T2D with complications of peripheral arterial disease. Association of LRG1, obesity, and weight loss is unknown. We examined whether plasma LRG1 is associated with obesity in health screening participants and if it predicts future weight loss in morbidly obese patients after metabolic/bariatric surgery. Methods Cohort 1 was a cross‐sectional study from a Health Screening program (n = 616) in a tertiary hospital. Cohort 2 was a prospective study of morbidly obese patients (n = 231) who underwent metabolic/bariatric surgery with follow‐up weight measurements. Anthropometric data, baseline fasting glucose, plasma adiponectin, high sensitivity C‐reactive protein (HsCRP), and LRG1 were measured. Postsurgery blood, after metabolic/bariatric surgery, were available for LRG1and HsCRP measurements in 57 patients. Results In the group with highest tertile of LRG1, body mass index (BMI), waist circumference, and HsCRP were significantly higher, while total cholesterol, high‐density lipoprotein, low‐density lipoprotein, and adiponectin were lower than tertiles 1 and 2. Generalized linear model analysis showed that female gender (P