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Schizophrenia: maternal inheritance and heteroplasmy of mtDNA mutations.

Tomoe Ichikawa | Makoto Arai | Mitsuhiro Miyashita | Mayumi Arai | Nanako Obata | Izumi Nohara | Kenichi Oshima | Kazuhiro Niizato | Yuji Okazaki | Nagafumi Doi | Masanari Itokawa
Molecular genetics and metabolism | 2012

Role of mitochondrial pathology in schizophrenia has not been fully clarified. We searched for distinctive variants in mtDNA extracted from the gray matter of postmortem brains and from peripheral blood samples. We screened mtDNA region containing 5 genes encoding subunits of cytochrome c oxidase and ATPases. Polymorphisms not already reported in databases are recorded as unregistered rare variants. Four unregistered, non-synonymous rare variants were detected in 4 schizophrenic samples. Seven registered non-synonymous variants were not previously detected in non-psychotic Japanese samples registered in the mtSNP database. These variants may contribute to disease pathophysiology. In one family, compound mutations showed co-segregation with schizophrenia. MtDNA mutations could confer a risk for schizophrenia in the Japanese population, although further analyses are needed.

Pubmed ID: 22030097

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Clustal W2 (tool)

RRID:SCR_002909

THIS RESOURCE IS NO LONGER IN SERVICE, documented on January 19, 2022. Command line version of multiple sequence alignment program Clustal for DNA or proteins. Alignment is progressive and considers sequence redundancy. No longer being maintained. Please consider using Clustal Omega instead which accepts nucleic acid or protein sequences in multiple sequence formats NBRF/PIR, EMBL/UniProt, Pearson (FASTA), GDE, ALN/ClustalW, GCG/MSF, RSF.

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MITOMAP - A human mitochondrial genome database (tool)

RRID:SCR_002996

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PhyloTree.org (tool)

RRID:SCR_012948

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PolyPhen: Polymorphism Phenotyping (tool)

RRID:SCR_013189

Software tool which predicts possible impact of amino acid substitution on structure and function of human protein using straightforward physical and comparative considerations. PolyPhen-2 is new development of PolyPhen tool for annotating coding nonsynonymous SNPs.

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