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Abstract Title:

Mitochondrial enzyme dysfunction in autism spectrum disorders; a novel biomarker revealed from buccal swab analysis.

Abstract Source:

Biomark Med. 2015 ;9(10):957-65. Epub 2015 Oct 6. PMID: 26439018

Abstract Author(s):

Michael J Goldenthal, Shirish Damle, Sudip Sheth, Nidhi Shah, Joseph Melvin, Reena Jethva, Huntley Hardison, Harold Marks, Agustin Legido

Article Affiliation:

Michael J Goldenthal

Abstract:

AIM: Mitochondrial function studies in autism spectrum disorders (ASD) have detected skeletal muscle mitochondrial enzyme deficiencies in respiratory complex (RC) activities. As a muscle biopsy is expensive and invasive, we assessed RC-I and RC-IV activities in buccal swabs.

METHODS: 92 children with ASD and 68 controls were studied with immunocapture for RC-I and microspectrophotometry for RC-IV.

RESULTS: Significant RC activity deficiencies were found in 39 (42%) ASD patients (p<0.01) and more prevalent in more severe cases. Aberrant RC overactivity was seen in 9 children. RC-I/RC-IV activity ratio was significantly increased in 64% of the entire ASD cohort including 76% of those more severely affected (p<0.05).

CONCLUSION: Buccal swab analysis revealed extensive RC abnormalities in ASD providing a noninvasive biomarker to assess mitochondrial function in ASD patients.

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