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. 2024 Jan 31;24(1):88.
doi: 10.1186/s12888-024-05529-1.

Adiponectin blood levels and autism spectrum disorders: a systematic review

Mohsan Ali  1 , Maha Kamran  2 , Muhammad Talha  3 , Mujeeb U Shad  4   5   6
Affiliations

Adiponectin blood levels and autism spectrum disorders: a systematic review

Mohsan Ali et al. BMC Psychiatry. .

Abstract

Objective: To review the relationship between adiponectin levels and autism spectrum disorders (ASDs) in children.

Background: ASDs are associated with pervasive social interaction and communication abnormalities. Researchers have studied various pathophysiological mechanisms underlying ASDs to identify predictors for an early diagnosis to optimize treatment outcomes. Immune dysfunction, perhaps mediated by a decrease in anti-inflammatory adipokine, adiponectin, along with changes in other adipokines, may play a central role in increasing the risk for ASDs. However, other factors, such as low maternal vitamin D levels, atherosclerosis, diabetes, obesity, cardio-metabolic diseases, preterm delivery, and oxytocin gene polymorphism may also contribute to increased risk for ASDs.

Methods: Searches on the database; PubMed, Google Scholar, and Cochrane using keywords; adiponectin, adipokines, ASD, autism, autistic disorder, included English-language studies published till September 2022. Data were extracted on mean differences between adiponectin levels in children with and without ASDs.

Results: The search yielded six studies providing data on adiponectin levels in young patients with ASDs. As can be seen from Table 1, four of the six studies were positive for an inverse correlation between ASD and adiponectin levels. In addition, two of the four positive and one negative studies found low adiponectin levels associated with and the severity of autistic symptoms. However, results from one reviewed study were insignificant.

Conclusion: Most studies reviewed yielded lower adiponectin levels in children with ASDs as well as the severity of autistic symptoms.

Keywords: Adiponectin; Autism; Disorders; Levels; Plasma; Spectrum.

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Conflict of interest statement

No competing interests for all authors.

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