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Circulating levels of adropin and overweight/obesity: a systematic review and meta-analysis of observational studies

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Abstract

The association between circulating adropin levels and overweight/obesity is currently unclear. The aim of this study was thus to investigate and seek to determine the association between circulating adropin levels and overweight/obesity using the meta-analysis approach of observational studies. A comprehensive literature search was carried out through the PubMed, Web of Science, and SCOPUS databases to identify relevant observational studies that assessed the relationship between circulating adropin levels and overweight/obesity up to September 2020. A random-effects model was used to compute the pooled weighted mean difference (WMD) with 95% confidence intervals (CI). The meta-analysis of five studies (n = 643 participants) showed that circulating adropin levels were significantly lower in the overweight/obese vs. the normal-weight participants (WMD =  − 0.96 ng/ml, 95% CI =  − 1.72 to − 0.19, P = 0.01; I2 = 88.4%). In subgroup analyses, lower circulating adropin levels in obese participants compared with normal-weight were observed in Asians (WMD =  − 1.58 ng/ml, 95% CI =  − 1.96 to − 1.21, P < 0.001; I2 = 0.00%), and in patients with metabolic disorders (WMD =  − 1.26 ng/ml, 95% CI =  − 1.76 to − 0.77, P < 0.001; I2 = 44.6%), respectively. Circulating adropin levels were significantly lower in overweight/obese vs. normal-weight participants, suggesting a possible role of this hormone in the development of obesity. However, the present research indicates that further studies are needed to conclusively confirm whether adropin is a viable marker of obesity.

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Data are available on request from the corresponding author.

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Funding

This work was funded by the Shahid Sadoughi University of Medical Sciences, Yazd, Iran.

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Contributions

SS conceived and designed the study; SS and SY conducted a systematic search, screened articles, and selected eligible articles; SS and RKM extracted the information from eligible studies and performed quality assessments; SS and ShA performed analyses and interpreted the results; SS, RKM, SY, SA, and SA wrote the first draft of the manuscript; CC edited the manuscript; and SA critically revised the manuscript and is the guarantor. All authors have read and approved the final manuscript. All authors had full access to all the data and take responsibility for the integrity of the data and the accuracy of the data analysis.

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Correspondence to Shima Abdollahi.

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Soltani, S., Kolahdouz-Mohammadi, R., Aydin, S. et al. Circulating levels of adropin and overweight/obesity: a systematic review and meta-analysis of observational studies. Hormones 21, 15–22 (2022). https://doi.org/10.1007/s42000-021-00331-0

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