Correlation of circulating ANGPTL5 levels with obesity, high sensitivity C-reactive protein and oxidized low-density lipoprotein in adolescents

Abstract

Angiopoietin-like proteins (AnGptL) is a family of eight members known to play an important role in metabolic diseases. Of these, ANGPTL5 is suggested to regulate triglyceride metabolism and is increased in obesity and diabetes. However, its role in metabolic diseases in adolescents is not wellstudied. In this study, we tested the hypothesis of a positive association between plasma ANGPTL5, and obesity, high sensitivity c-reactive protein (HscRp) and oxidized low-density lipoprotein (ox-LDL) in adolescents. Adolescents (n = 431; age 11-14 years) were randomly selected from middle schools in Kuwait. Obesity was classified by the BMI-forage based on the WHO growth charts. Plasma ANGPTL5, HsCRP, and Ox-LDL were measured using ELISA. The prevalence of overweight and obesity was 20.65% and 33.18%, respectively. Mean (SD) plasma ANGPTL5 levels were significantly higher in obese, compared with overweight and normal-weight adolescents (23.05 (8.79) vs 18.39 (7.08) ng/mL, and 18.26 (6.95) ng/ml, respectively). ANGPTL5 was positively associated with both HsCRP (ρ=0.27, p < 0.001) and Ox-LDL (ρ = 0.24, p < 0.001). In Conclusion, ANGPTL5 levels are elevated in obese adolescents and are associated with cardiovascular disease risk factors, HscRp and ox-LDL. the use of ANGPTL5 as a powerful diagnostic and prognostic tool in obesity and metabolic diseases needs to be further evaluated. Childhood obesity has emerged as a major public health problem worldwide. In Arab states in the Gulf region, extremely high prevalence of childhood obesity has been reported 1. On a sample of 13, 000 school children each year, Kuwait Nutritional Surveillance has consistently reported that more than 45% of school children aged 5-19 are either overweight or obese 2. Similarly, a cross-sectional study conducted on 635 public intermediate school children reported that one quarter of the children (25.5%) were overweight and over one third (36.5%) were classified as obese 3. Indoor lifestyle, lack of physical activity and changes in the dietary pattern have been implicated as the underlying causes of childhood obesity in the region. According to the World Health Organization (WHO), the worldwide prevalence of obesity nearly tripled between 1975 and 2016 and is expected to double in the next 25 years. This highlights the importance of dealing with this epidemic. Given the widespread prevalence of obesity and its long-term and short-term complications, one approach to the problem is to focus on the key molecular pathways involved in the development of childhood obesity. This would help identify potential biomarkers that might be used to guide preventive and therapeutic interventions.

Elevated Plasma Angiopoietinlike Protein 5 (ANGPTL5) Is More Positively Associated with Glucose Metabolism Disorders in Patients with Metabolic Syndrome

“…In 2019, Alghanim et al found that the plasma ANGPTL5 concentration of obese patients was higher than that of nonobese patients; compared with nonobese patients with type 2 diabetes, the plasma ANGPTL5 concentration was significantly higher in obese patients with type 2 diabetes, which was closely related to insulin resistance [ 19 ]. In 2020, it was further found that ANGPTL5 levels were elevated in obese adolescents, and associated with cardiovascular disease risk factors including hs-CRP and oxidized LDL [ 21 ]. It jointly suggested that the concentration of ANGPTL5 might be strongly correlated with obesity, diabetes, and lipid metabolism, and is expected to become a powerful biomarker or an important therapeutic tool for metabolic diseases.…”

Increased expression level of ANGPTL8 in White Adipose tissue under Chronic Cold Treatment

“…Liver plays a major role in energy homeostasis through regulating glucose and lipid metabolism pathways. It's the major source of ANGPTL3 and ANGPTL8 which are well known regulators of LPL activity [4,[23][24][25][26]. LPL is expressed by multiple tissues such as adipose tissues, heart, and skeletal muscles amongst others [4].…”

Triglyceride and Triglyceride-Rich Lipoproteins in Atherosclerosis

“…ANGPTL5 is primarily expressed in adipose tissue and heart. This protein is positively associated with obesity, type 2 diabetes, oxidized LDL, and especially glucose metabolism disorders, suggesting ANGPTL5 is involved in modulation of TG and glucose homeostasis ( Alghanim et al, 2019 ; Hammad et al, 2020 ; Liu Y. Z et al, 2021 ).…”