Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Embryonic Myosin Heavy-Chain Mutations Cause Distal Arthrogryposis and Developmental Myosin Myopathy That Persists Postnatally

Embryonic Myosin Heavy-Chain Mutations Cause Distal Arthrogryposis and Developmental Myosin... ORIGINAL CONTRIBUTION Embryonic Myosin Heavy-Chain Mutations Cause Distal Arthrogryposis and Developmental Myosin Myopathy That Persists Postnatally Homa Tajsharghi, PhD; Eva Kimber, MD; Anna-Karin Kroksmark, PhD; Ragnar Jerre, MD; Mar Tulinius, MD, PhD; Anders Oldfors, MD, PhD Background: Myosin is a molecular motor and the es- biopsy specimens were obtained, and in addition to mor- sential part of the thick filament of striated muscle. The phologic analysis, the expression of MyHC isoforms was expression of myosin heavy-chain (MyHC) isoforms is investigated at the protein and transcript levels. developmentally regulated. The embryonic isoform en- Results: We identified patients from 3 families with novel coded from MYH3 (OMIM *160720) is expressed dur- MYH3 mutations. These mutations affect developmen- ing fetal life. Recently, mutations in MYH3 were demon- tally conserved residues that are located in different re- strated to be associated with congenital joint contractures, gions of the adenosine triphosphate–binding pocket of that is, Freeman-Sheldon and Sheldon-Hall syndromes, the MyHC head. The embryonic (MYH3) isoform was not which are both distal arthrogryposis syndromes. Muta- detected in any of the muscle biopsy samples, indicat- tions in other MyHC isoforms cause myopathy. It is un- ing a normal developmental downregulation of MYH3 in known whether http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png JAMA Neurology American Medical Association

Embryonic Myosin Heavy-Chain Mutations Cause Distal Arthrogryposis and Developmental Myosin Myopathy That Persists Postnatally

Loading next page...
 
/lp/american-medical-association/embryonic-myosin-heavy-chain-mutations-cause-distal-arthrogryposis-and-4o7mkwjuRl

References (55)

Publisher
American Medical Association
Copyright
Copyright 2008 American Medical Association. All Rights Reserved. Applicable FARS/DFARS Restrictions Apply to Government Use.
ISSN
2168-6149
eISSN
2168-6157
DOI
10.1001/archneur.65.8.1083
pmid
18695058
Publisher site
See Article on Publisher Site

Abstract

ORIGINAL CONTRIBUTION Embryonic Myosin Heavy-Chain Mutations Cause Distal Arthrogryposis and Developmental Myosin Myopathy That Persists Postnatally Homa Tajsharghi, PhD; Eva Kimber, MD; Anna-Karin Kroksmark, PhD; Ragnar Jerre, MD; Mar Tulinius, MD, PhD; Anders Oldfors, MD, PhD Background: Myosin is a molecular motor and the es- biopsy specimens were obtained, and in addition to mor- sential part of the thick filament of striated muscle. The phologic analysis, the expression of MyHC isoforms was expression of myosin heavy-chain (MyHC) isoforms is investigated at the protein and transcript levels. developmentally regulated. The embryonic isoform en- Results: We identified patients from 3 families with novel coded from MYH3 (OMIM *160720) is expressed dur- MYH3 mutations. These mutations affect developmen- ing fetal life. Recently, mutations in MYH3 were demon- tally conserved residues that are located in different re- strated to be associated with congenital joint contractures, gions of the adenosine triphosphate–binding pocket of that is, Freeman-Sheldon and Sheldon-Hall syndromes, the MyHC head. The embryonic (MYH3) isoform was not which are both distal arthrogryposis syndromes. Muta- detected in any of the muscle biopsy samples, indicat- tions in other MyHC isoforms cause myopathy. It is un- ing a normal developmental downregulation of MYH3 in known whether

Journal

JAMA NeurologyAmerican Medical Association

Published: Aug 1, 2008

There are no references for this article.