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Circulating PGRN Levels Are Increased but Not Associated with Insulin Sensitivity or β-Cell Function in Chinese Obese
Fengyun Wang1, Ting Chen1, Ling Sun2
1Department of Endocrinology, Metabolism and Genetic Disorders, Children's Hospital of Soochow University, Suzhou, Jiangsu, China.
Insights
Serum progranulin (PGRN) levels are higher in obese children and correlate with obesity markers like triglycerides and cholesterol. This suggests PGRN may play a role in childhood obesity development.
Area of Science:
- Pediatric Endocrinology
- Adipokine Research
- Metabolic Syndrome
Background:
- Progranulin (PGRN) is an adipokine linked to energy homeostasis and obesity in adults.
- Its role in childhood obesity remains largely unexplored.
- Understanding PGRN's function in children is crucial for addressing pediatric metabolic health.
Purpose of the Study:
- To investigate the potential role of progranulin (PGRN) in obese children.
- To explore the relationship between serum PGRN levels and obesity-related markers in this population.
Main Methods:
- A cross-sectional study involving 77 children (43 obese, 34 healthy).
- Serum PGRN levels were measured and compared between obese and healthy children.
- Correlations between PGRN levels and various obesity markers (lipids, blood pressure, glucose metabolism) were analyzed.
Main Results:
- Obese children exhibited significantly higher serum PGRN levels compared to healthy controls (P < 0.05).
- PGRN levels positively correlated with triglyceride, total cholesterol, IL-6, systolic blood pressure, and diastolic blood pressure in obese children.
- No significant correlation was found between PGRN and HOMA-IR or HOMA-β.
Conclusions:
- Serum PGRN levels are elevated in obese children in China.
- Increased PGRN is associated with key obesity-related metabolic and cardiovascular markers.
- PGRN may contribute to the pathophysiology of childhood obesity.
Abstract:
Progranulin (PGRN), a novel peptide that has recently emerged as an important regulatory adipokine, is relevant to energy homeostasis and obesity in animals and adult humans. Little is known about its roles in children. The aim of the current study was to determine the potential role of PGRN and explore its relationship to various obesity-related markers in obese children. This was a cross-sectional study composed of 77 children (43 obese and 34 healthy, age 8.68 ± 0.28 and 8.46 ± 0.45 years, resp.). The PGRN levels were significantly higher in obese children (102.44 ± 4.18 ng/mL) comparing to controls (69.32 ± 5.49 ng/mL) (P < 0.05). Moreover, the PGRN levels were positively correlated with triglyceride (TG), total cholesterol (TC), IL-6, systolic blood pressure (SBP), and diastolic blood pressure (DBP) in obese children after adjusted for BMI and age. However, there was no correlation of serum PGRN levels with OGTT-derived dynamic parameters, HOMA-IR, or HOMA-β in obese children. The results suggest that serum PGRN levels are significantly higher in obese children in China and correlate significantly with obesity-related markers. Increased PGRN levels may be involved in the pathological mechanism of childhood obesity.
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