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Pflügers Archiv

, Volume 323, Issue 2, pp 91–95 | Cite as

Secretory transmembrane potentials in acinar cells from the cat submandibular gland during perfusion with a chloride-free sucrose solution

  • Ole Holger Petersen
Article

Summary

The cat submandibular gland was perfused with a normal NaCl Locke solution and a chloride-free sucrose solution. The numerical increase in acinar membrane potential (secretory potential) was recorded after intra-arterial injection of acetylcholine.

There was no significant difference between the size of the secretory potentials recorded during perfusion with the sucrose solution [23.6 mV±1.4 (n=23)] and the size of those recorded during the control periods [20.6 mV±1.2 (n=24)].

The maximal value of the membrane potential after injection of acetylcholine was higher [51.8 mV±2.4 (n=23)] during perfusion with the sucrose solution than during the control periods [44.8 mV±1.8 (n=22)].

The results show that a pump transporting chloride into the acinar cells cannot be responsible for the generation of the secretory potentials. The results are best accounted for by assuming that an outward passive transport of potassium, being partly short-circuited by an inward passive sodium transport, is responsible for the change in membrane potential after stimulation with acetylcholine.

Key-Words

Secretory Potential Salivary Gland Chloride Pump Sucrose Potassium Transport 

Schlüsselwörter

Sekretorisches Potential Speicheldrüse Chlorid-Pumpe Sucrose Kaliumtransport 

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References

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Copyright information

© Springer-Verlag 1971

Authors and Affiliations

  • Ole Holger Petersen
    • 1
  1. 1.Institute of Medical Physiology CUniversity of CopenhagenCopenhagen NDenmark

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