Abstract
The present research was carried out to elucidate the role of zinc (Zn) supplementation on the plasma concentration and gene expression, as well as the effects on cognitive-motor performance, in a cohort of children with autism spectrum disorder (ASD). The study was performed on a cohort of 30 pediatric subjects with ASD, encompassing an age range of 3–8 years. The impact of Zn supplementation was investigated in 3 months (or 12 weeks) on the ASD children. Each daily dosage of Zn was calculated as being equal to the body weight in kg plus 15–20 mg. The effect of Zn was also evaluated on the serum level of metallothionein 1 (MT-1A), and the severity of autism via scores on the Childhood Autism Rating Scale. The effect of Zn was investigated on the gene expression of MT1-A before and after Zn supplementation. The data of the present study showed an increase in cognitive-motor performance and an increased serum metallothionein concentration, as well as a significant lowering in the circulating serum levels of copper (Cu) following Zn supplementation. In the cohort of ASD patients, the genetic expression of MT-1 was higher after Zn therapy than before the treatment. In conclusion, Zn supplementation might be an important factor in the treatment of children with ASD.
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Abbreviations
- ASD:
-
Autism spectrum disorder
- CARS:
-
Childhood Autism Rating Scale
- cDNA:
-
Copied DNA
- CNS:
-
Central nervous system
- Cu:
-
Copper
- ELISA:
-
Enzyme-linked immunosorbent assay
- GABA:
-
Gamma-aminobutyric acid
- GAPDH:
-
Glyceraldehyde-3-phosphate dehydrogenase
- MT-1A:
-
Metallothionein 1A
- PCR:
-
Polymerase chain reaction
- TGMD:
-
Test of gross motor development
- TMB:
-
Tetramethylbenzidine
- Zn:
-
Zinc
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Meguid, N.A., Bjørklund, G., Gebril, O.H. et al. The role of zinc supplementation on the metallothionein system in children with autism spectrum disorder. Acta Neurol Belg 119, 577–583 (2019). https://doi.org/10.1007/s13760-019-01181-9
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DOI: https://doi.org/10.1007/s13760-019-01181-9