Document Detail


Expression of the potassium channel KV3.4 in mouse skeletal muscle parallels fiber type maturation and depends on excitation pattern.
MedLine Citation:
PMID:  9468318     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
We report the detailed expression pattern of the voltage-dependent potassium channel KV3.4 (rat homologue, Raw3) in mouse skeletal muscle. Using semi-quantitative RT-PCR, we show that its expression is detectable at embryonic day 17 and rises to adult levels within 2 weeks after birth. Expression is fiber type-dependent, with mRNA levels being 5-6-fold lower in the mixed slow/fast soleus muscle than in the fast tibialis anterior and extensor digitorum longus muscles. Fast muscles from myotonic mice exhibit low KV3.4 mRNA levels similar to those of wild-type soleus. In denervated extensor digitorum longus, KV3.4 expression declines to perinatal levels. We conclude that KV3.4 expression in mouse skeletal muscle is regulated by the pattern of excitation.
Authors:
D Vullhorst; R Klocke; J W Bartsch; H Jockusch
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  FEBS letters     Volume:  421     ISSN:  0014-5793     ISO Abbreviation:  FEBS Lett.     Publication Date:  1998 Jan 
Date Detail:
Created Date:  1998-02-27     Completed Date:  1998-02-27     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  0155157     Medline TA:  FEBS Lett     Country:  NETHERLANDS    
Other Details:
Languages:  eng     Pagination:  259-62     Citation Subset:  IM    
Affiliation:
Developmental Biology Unit, University of Bielefeld, Germany.
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MeSH Terms
Descriptor/Qualifier:
Animals
Mice
Mice, Inbred BALB C
Mice, Inbred C57BL
Muscle Denervation
Muscle Development
Muscle Fibers, Skeletal / metabolism
Muscle, Skeletal / growth & development,  innervation,  metabolism*
Myotonia / metabolism
Potassium Channels / biosynthesis*,  genetics
Chemical
Reg. No./Substance:
0/Potassium Channels

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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