Literature DB >> 2569375

Autoregulation of apical sodium entry in the colon of the frog (Rana esculenta).

R Krattenmacher1, W Clauss.   

Abstract

1. Na transport (INa) in the K-depolarized colon of the frog was investigated by electro-physiological current-voltage analysis. 2. INa and the intracellular Na activity [(Na)c] increased with increasing mucosal Na concentration ([Na]m), whereas the apical Na-permeability (PNam) and the transepithelial resistance (RT) decreased. 3. The results are consistent with a Na self-inhibition mechanism; however, a feedback inhibition of INa by intracellular Na must also be considered.

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Year:  1989        PMID: 2569375     DOI: 10.1016/0300-9629(89)90016-9

Source DB:  PubMed          Journal:  Comp Biochem Physiol A Comp Physiol        ISSN: 0300-9629


  3 in total

1.  Ca-sensitive sodium absorption in the colon of Xenopus laevis.

Authors:  R Krattenmacher; R Voigt; W Clauss
Journal:  J Comp Physiol B       Date:  1990       Impact factor: 2.200

2.  Ion transport across leech integument. I. Electrogenic Na+ transport and current fluctuation analysis of the apical Na+ channel.

Authors:  W M Weber; B Dannenmaier; W Clauss
Journal:  J Comp Physiol B       Date:  1993       Impact factor: 2.200

3.  Different modes of electrogenic Na+ absorption in the coprodeum of the chicken embryo: role of extracellular Ca2+.

Authors:  M Heinz; R Krattenmacher; B Hoffmann; W Clauss
Journal:  J Comp Physiol B       Date:  1991       Impact factor: 2.200

  3 in total

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