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Effects of dietary nucleotide supplementation on growth in infants: a meta-analysis of randomized controlled trials

  • Lanfang Wang
  • Shu Mu
  • Xiaoyan Xu
  • Zhexi Shi
  • Li Shen
Original Contribution
  • 121 Downloads

Abstract

Purpose

Dietary nucleotides are thought to be conditionally essential nutrients in infancy. However, studies have reported inconsistent findings regarding the association between nucleotide supplementation and infant physical growth. We conducted this meta-analysis to examine the efficacy of nucleotide supplementation of infant formula in promoting early infant growth.

Methods

Randomized controlled trials that evaluated the association between nucleotide supplementation and infant growth through June 2017 were included. Study quality was assessed using the Cochrane Collaboration’s Risk of Bias tool. Standardized mean differences (SMD) with 95% confidence intervals (CIs) were calculated. Heterogeneity was assessed using Q and I2 tests.

Results

Nucleotide supplementation significantly increased the rate of weight gain (SMD 0.26; 95% CI 0.06–0.47), but had no effect on weight (SMD − 0.16; 95% CI − 0.55–0.23), weight Z score (SMD, − 0.42; 95% CI − 1.64–0.81), length (SMD 0.01; 95% CI − 0.18–0.21) and length Z score (SMD 0.15; 95% CI − 0.10–0.40). Occipitofrontal head circumference (OFC) at 7–8 weeks (SMD 0.30; 95% CI 0.10–0.50) and the rate of OFC gain (SMD 0.34; 95% CI 0.09–0.58) were significantly improved with nucleotide supplementation, whereas, 16- and 20-week OFC values did not differ.

Conclusions

Our meta-analysis indicated that nucleotide supplementation can increase the rate of weight gain, OFC and rate of OFC gain; however, we cannot conclude that it affects weight, weight Z score, length or length Z score. Large-scale randomized controlled trials of long-term nucleotide supplementation are needed to reach definitive conclusions.

Keywords

Nucleotides Meta-analysis Growth Infant formula 

Notes

Funding

This work was supported by the National Natural Science Foundation of China [Grant Number 31101720] and the National High Technology Research and Development Program of China (863 Program) [Grant Number 2015AA021002].

Compliance with ethical standards

Conflict of interest

The authors declare that there are no conflicts of interests regarding the publication of this article.

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Lanfang Wang
    • 1
  • Shu Mu
    • 1
  • Xiaoyan Xu
    • 1
  • Zhexi Shi
    • 1
  • Li Shen
    • 2
  1. 1.Institute of Nutrition and Healthy FoodTongji University School of MedicineShanghaiChina
  2. 2.Department of Pathogen BiologyTongji University School of MedicineShanghaiChina

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