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Guevara-Campos J, González-Guevara L, Puig-Alcaraz C, Cauli O. Autism spectrum disorders associated to a deficiency of the enzymes of the mitochondrial respiratory chain. Metab Brain Dis 2013; 28:605-12. [PMID: 23839164 DOI: 10.1007/s11011-013-9419-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/02/2013] [Accepted: 06/25/2013] [Indexed: 10/26/2022]
Abstract
Autism spectrum disorder (ASD) is a group of neurodevelopmental disorders characterized by a combination of reciprocal social deficits, communication impairment, and rigid ritualistic interest and stereotypies. The etiology is generally multifactorial, including genetic, immunological and/or environmental factors. A group of ASD has been linked to mitochondrial dysfunction with subsequent deficiency in energy production. Patients with ASD and mitochondrial disease often show signs and symptoms uncommon to idiopathic ASD such as cardiac, pancreatic or liver dysfunction, cardiac, growth retardation, fatigability, but in some cases semiology is different. We show two clinical cases of ASD associated to a deficiency of the mitochondrial respiratory chain (complex I+III and IV) with different clinical presentations. In one case, signs and symptoms of mitochondrial disorder were mild and the second diagnosis was attained many years after that of ASD. These findings support the recent growing body of evidence that ASD can be associated with mitochondrial disorder. Children with ASD and abnormal neurologic or systemic findings should be evaluated for mitochondrial disorder.
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Affiliation(s)
- José Guevara-Campos
- "Felipe Guevara Rojas" Hospital, Pediatrics Service, Universito of Oriente, El Tigre, Anzoátegui, Venezuela
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Kong QP, Yao YG, Sun C, Zhu CL, Zhong L, Wang CY, Cai WW, Xu XM, Xu AL, Zhang YP. Phylogeographic analysis of mitochondrial DNA haplogroup F2 in China reveals T12338C in the initiation codon of the ND5 gene not to be pathogenic. J Hum Genet 2004; 49:414-423. [PMID: 15278763 DOI: 10.1007/s10038-004-0170-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2004] [Accepted: 05/06/2004] [Indexed: 11/29/2022]
Abstract
In this report, we studied on a homoplasmic T12338C change in mitochondrial DNA (mtDNA), which substituted methionine in the translational initiation codon of the NADH dehydrogenase subunit 5 gene ( ND5) with threonine. This nucleotide change was originally identified in two mtDNAs belonging to haplogroup F2 by our previous complete sequencing of 48 mtDNAs. Since then, a total of 76 F2 mtDNAs have been identified by the variations occurring in the hypervariable segments and coding regions among more than 3,000 individuals across China. As the T12338C change was detected in 32 samples representing various sub-clades of the F2 haplogroup while not in 14 non-F2 controls, we believe that the T12338C change is specific to the F2 haplogroup. As F2 and its sub-clades were widely distributed in normal individuals of various Chinese populations, we conclude that T12338C is not pathogenic. In addition, based on the average distribution frequency, haplotype diversity and nucleotide diversity of haplogroup F2 in the populations across China, the T12338C nucleotide substitution seems to have been occurred in north China about 42,000 years ago. Our results provided a good paradigm for distinguishing a polymorphic change from a pathogenic mutation based on mtDNA phylogeny.
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Affiliation(s)
- Qing-Peng Kong
- Laboratory of Cellular and Molecular Evolution, and Molecular Biology of Domestic Animals, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, 650223, China
- Laboratory for Conservation and Utilization of Bio-resource, Yunnan University, Kunming, 650091, China
- Graduate School of the Chinese Academy of Sciences, Beijing, 100039, China
| | - Yong-Gang Yao
- Laboratory of Cellular and Molecular Evolution, and Molecular Biology of Domestic Animals, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, 650223, China
- The Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - Chang Sun
- Laboratory of Cellular and Molecular Evolution, and Molecular Biology of Domestic Animals, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, 650223, China
- Graduate School of the Chinese Academy of Sciences, Beijing, 100039, China
| | - Chun-Ling Zhu
- Laboratory of Cellular and Molecular Evolution, and Molecular Biology of Domestic Animals, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, 650223, China
| | - Li Zhong
- Laboratory for Conservation and Utilization of Bio-resource, Yunnan University, Kunming, 650091, China
| | - Cheng-Ye Wang
- Laboratory of Cellular and Molecular Evolution, and Molecular Biology of Domestic Animals, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, 650223, China
- Graduate School of the Chinese Academy of Sciences, Beijing, 100039, China
| | - Wang-Wei Cai
- Department of Biochemistry, Hainan Medical College, Haikou, 571101, China
| | - Xiang-Min Xu
- Department of Medical Genetics, First Military Medical University, Guangzhou, 510515, China
| | - An-Long Xu
- College of Life Sciences, Zhongshan University, Guangzhou, 510275, China
| | - Ya-Ping Zhang
- Laboratory of Cellular and Molecular Evolution, and Molecular Biology of Domestic Animals, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, 650223, China.
- Laboratory for Conservation and Utilization of Bio-resource, Yunnan University, Kunming, 650091, China.
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Abstract
Variation in hypervariable region I (HVR-I) and mutations in coding areas of mtDNA were studied in 257 patients of sudden infant death caused by infections, sudden infant death syndrome (SIDS), and borderline SIDS and in a control group of 102 living infants. Nine different point mutations were detected in the coding areas investigated: T3290C, T3308C, T3308G (three patients), A9299G (two patients), G9300A (two patients), T10034C (nine patients), A10042T, C10043T, and A10044G. An association was found between a high number of HVR-I substitutions and potentially pathogenic mtDNA point mutations in coding areas (P = 0.024, odds ratio = 1.3). The mean number of substitutions in HVR-I was 3.28 in the infectious death group, 2.63 in the borderline SIDS group, 2.58 in the SIDS group, and 2.02 in the control group (P = 0.005). In coding areas, 11.1% of the infectious death patients had a mutation, and the same was true for 9.8% of the borderline SIDS patients, 5.6% of the SIDS patients, and 2.9% of the control subjects (P = 0.21). The results indicate that increased levels of HVR-I substitutions may be an indicator of mtDNA instability. Furthermore, mtDNA mutations may play a role in some patients with sudden unexpected infant death that was unexplained or thought to be caused by infection.
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Affiliation(s)
- Siri H Opdal
- Institute of Forensic Medicine, University of Oslo, Oslo, Norway
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Rocha H, Flores C, Campos Y, Arenas J, Vilarinho L, Santorelli FM, Torroni A. About the "Pathological" role of the mtDNA T3308C mutationellipsis. Am J Hum Genet 1999; 65:1457-9. [PMID: 10521313 PMCID: PMC1288299 DOI: 10.1086/302641] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Affiliation(s)
- Hugo Rocha
- Unidade de Biologia Clínica, Instituto de Genética Médica Jacinto de Magalhães, Porto, Portugal; Universidad de La Laguna, Tenerife, Spain; Centro de Investigación, Hospital Universitario “12 de Octubre,” Madrid; Molecular Medicine, Children's Hospital Bambino Gesù, and Dipartimento di Genetica e Biologia Molecolare, Università “La Sapienza,” Rome; and Istituto di Chimica Biologica, Università di Urbino, Urbino, Italy
| | - Carlos Flores
- Unidade de Biologia Clínica, Instituto de Genética Médica Jacinto de Magalhães, Porto, Portugal; Universidad de La Laguna, Tenerife, Spain; Centro de Investigación, Hospital Universitario “12 de Octubre,” Madrid; Molecular Medicine, Children's Hospital Bambino Gesù, and Dipartimento di Genetica e Biologia Molecolare, Università “La Sapienza,” Rome; and Istituto di Chimica Biologica, Università di Urbino, Urbino, Italy
| | - Yolanda Campos
- Unidade de Biologia Clínica, Instituto de Genética Médica Jacinto de Magalhães, Porto, Portugal; Universidad de La Laguna, Tenerife, Spain; Centro de Investigación, Hospital Universitario “12 de Octubre,” Madrid; Molecular Medicine, Children's Hospital Bambino Gesù, and Dipartimento di Genetica e Biologia Molecolare, Università “La Sapienza,” Rome; and Istituto di Chimica Biologica, Università di Urbino, Urbino, Italy
| | - Joaquín Arenas
- Unidade de Biologia Clínica, Instituto de Genética Médica Jacinto de Magalhães, Porto, Portugal; Universidad de La Laguna, Tenerife, Spain; Centro de Investigación, Hospital Universitario “12 de Octubre,” Madrid; Molecular Medicine, Children's Hospital Bambino Gesù, and Dipartimento di Genetica e Biologia Molecolare, Università “La Sapienza,” Rome; and Istituto di Chimica Biologica, Università di Urbino, Urbino, Italy
| | - Laura Vilarinho
- Unidade de Biologia Clínica, Instituto de Genética Médica Jacinto de Magalhães, Porto, Portugal; Universidad de La Laguna, Tenerife, Spain; Centro de Investigación, Hospital Universitario “12 de Octubre,” Madrid; Molecular Medicine, Children's Hospital Bambino Gesù, and Dipartimento di Genetica e Biologia Molecolare, Università “La Sapienza,” Rome; and Istituto di Chimica Biologica, Università di Urbino, Urbino, Italy
| | - Filippo M. Santorelli
- Unidade de Biologia Clínica, Instituto de Genética Médica Jacinto de Magalhães, Porto, Portugal; Universidad de La Laguna, Tenerife, Spain; Centro de Investigación, Hospital Universitario “12 de Octubre,” Madrid; Molecular Medicine, Children's Hospital Bambino Gesù, and Dipartimento di Genetica e Biologia Molecolare, Università “La Sapienza,” Rome; and Istituto di Chimica Biologica, Università di Urbino, Urbino, Italy
| | - Antonio Torroni
- Unidade de Biologia Clínica, Instituto de Genética Médica Jacinto de Magalhães, Porto, Portugal; Universidad de La Laguna, Tenerife, Spain; Centro de Investigación, Hospital Universitario “12 de Octubre,” Madrid; Molecular Medicine, Children's Hospital Bambino Gesù, and Dipartimento di Genetica e Biologia Molecolare, Università “La Sapienza,” Rome; and Istituto di Chimica Biologica, Università di Urbino, Urbino, Italy
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