Liu H, Huang M, Yu X. Blood and hair copper levels in childhood autism spectrum disorder: a meta-analysis based on case-control studies.
REVIEWS ON ENVIRONMENTAL HEALTH 2023;
0:reveh-2022-0256. [PMID:
36933002 DOI:
10.1515/reveh-2022-0256]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Accepted: 03/10/2023] [Indexed: 06/18/2023]
Abstract
OBJECTIVES
The association between copper levels and autism spectrum disorder (ASD) has been a controversial topic. This study investigated relationship between copper levels and ASD.
CONTENT
The following databases are searched until April 2022: PubMed, EMBASE and Web of Science. Combined effect size standardized mean differences (SMD) and 95% confidence intervals (95% CI) were calculated with Stata 12.0. In this meta-analysis, 29 case-control studies were included, which included 2,504 children with ASD and 2,419 healthy controls. The copper levels in hair (SMD: -1.16, 95% CI: -1.73 to -0.58) was significantly lower in ASD children than healthy controls. The copper levels in blood (SMD: 0.10, 95% CI: -0.12 to 0.32) not significantly compare ASD with controls.
SUMMARY AND OUTLOOK
Copper may be associated with the development of ASD in children.
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