Association Between Serum Calcium and Phosphorus Levels and Insulin-Like Growth Factor-1 in Chinese Children and Adolescents with Short Stature
Authors Sun M, Yan W, Zhao Q, Ji B, Ban B, Zhang M
Received 19 August 2020
Accepted for publication 30 October 2020
Published 17 November 2020 Volume 2020:13 Pages 1167—1173
Checked for plagiarism Yes
Review by Single anonymous peer review
Peer reviewer comments 2
Editor who approved publication: Dr Scott Fraser
Minghui Sun,1 Wenhua Yan,2,3 Qianqian Zhao,2,3 Baolan Ji,2,3 Bo Ban,2,3 Mei Zhang2,3
1Department of Clinical Medicine, Jining Medical University, Jining, Shandong 272067, People’s Republic of China; 2Department of Endocrinology, Affiliated Hospital of Jining Medical University, Jining Medical University, Jining, Shandong 272029, People’s Republic of China; 3Chinese Research Center for Behavior Medicine in Growth and Development, Jining, Shandong 272029, People’s Republic of China
Correspondence: Mei Zhang
Department of Endocrinology, Affiliated Hospital of Jining Medical University, Jining Medical University, 89 Guhuai Road, Jining, Shandong 272029, People’s Republic of China
Chinese Research Center for Behavior Medicine in Growth and Development, 89 Guhuai Road, Jining, Shandong 272029, People’s Republic of China
Objective: The aim of this study was to investigate the effect of serum calcium and phosphorus levels on the insulin-like growth factor 1 (IGF-1) in Chinese children and adolescents with short stature.
Methods: In this cross-sectional analysis, the clinical data of 747 children with height below – 2 SD who were evaluated at the Department of Endocrinology, Affiliated Hospital of Jining Medical University from March 1, 2013, to February 28, 2019, were selected. Anthropometric and biochemical indicators were measured. The relationship between the serum calcium and phosphorus levels and IGF-1 was analysed.
Results: The univariate analysis results showed that serum calcium or phosphorus was significantly associated with IGF-1 SDS. In addition, after adjusting for possible confounding factors, a linear relationship between serum calcium and IGF-1 SDS and a non-linear relationship between serum phosphorus and IGF-1 SDS were observed by smooth curve fitting. The results of the fully adjusted linear regression showed that serum calcium was positively associated with IGF-1 SDS (β 1.07, 95% CI 0.21, 1.92; p = 0.015). In the multivariate piecewise linear regression, when the serum phosphorus level was greater than 1.26 mmol/L, the IGF-1 SDS increased with the increase in serum phosphorus (β 1.92, 95% CI 1.36, 2.48; p < 0.001). However, we did not observe a significant relationship when the serum phosphorus level was less than 1.26 mmol/L (p = 0.223).
Conclusion: This study demonstrated that in Chinese children and adolescents with short stature, circulating calcium and phosphorus concentrations may be associated with the regulation of IGF-1 levels, and this relationship merits further investigation.
Keywords: calcium, phosphorus, IGF-1, short stature
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