Document Detail

The Relationship Between Gastric Myoelectric Activity and SCN5A Mutation Suggesting Sodium Channelopathy in Patients With Brugada Syndrome and Functional Dyspepsia - A Pilot Study.
MedLine Citation:
PMID:  22323988     Owner:  NLM     Status:  PubMed-not-MEDLINE    
BACKGROUND/AIMS: SCN5A encodes the cardiac-specific Na(V)1.5 sodium channel, and Brugada syndrome is a cardiac conduction disorder associated with sodium channel α-subunit (SCN5A) mutation. The SCN5A-encoded Na(V)1.5 channel is also found on gastrointestinal smooth muscle and interstitial cells of Cajal. We investigated the relationship between functional dyspepsia (FD) and SCN5A mutation to evaluate sodium channelopathy in FD.
METHODS: Patients with Brugada syndrome or FD were examined using upper endoscopy, electrogastrography (EGG), FD symptom questionnaire based on Rome III criteria and genetic testing for SCN5A mutation. Symptom scores of FD and EGG findings were analyzed according to SCN5A mutation.
RESULTS: A total of 17 patients (4 Brugada syndrome and 13 FD) participated in the study. An SCN5A mutation was noted in 75.0% of the patients with Brugada syndrome and in 1 (7.7%) of the patients with FD. Of 4 patients with SCN5A mutation, 2 (50%) had FD. Postprandial tachygastria and bradygastria were noted in 2 (50%) and 1 (25%) of the patients with SCN5A mutation, respectively. The EGG findings were not significantly different between positive and negative mutation in 17 patients.
CONCLUSIONS: Although we did not find statistically significant results, we suggest that it is meaningful to attempt to identify differences in symptoms and gastric myoelectric activity according to the presence of an SCN5A mutation by EGG analysis. The relationship between FD and sodium channelopathy should be elucidated in the future by a large-scale study.
Kyo Tae Jung; Hyojin Park; Jie-Hyun Kim; Dong-Jik Shin; Bo Young Joung; Moon-Hyoung Lee; Yang Soo Jang
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Publication Detail:
Type:  Journal Article     Date:  2012-01-16
Journal Detail:
Title:  Journal of neurogastroenterology and motility     Volume:  18     ISSN:  2093-0887     ISO Abbreviation:  J Neurogastroenterol Motil     Publication Date:  2012 Jan 
Date Detail:
Created Date:  2012-02-10     Completed Date:  2012-10-02     Revised Date:  2013-05-29    
Medline Journal Info:
Nlm Unique ID:  101530189     Medline TA:  J Neurogastroenterol Motil     Country:  Korea (South)    
Other Details:
Languages:  eng     Pagination:  58-63     Citation Subset:  -    
Division of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea.
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