...W. S. Marshall; C. G. Ossum; E. K. Hoffmann SUMMARY Hypotonic shock rapidly inhibits Cl - secretion by chloride cells, an effect that is osmotic and not produced by NaCl-depleted isosmotic solutions, yet the mechanism for the inhibition and its recovery are not known. We exposed isolated opercular...

... in Schistocerca gregaria . J. Insect Physiol. 33 , 269 -277. Alberts, B., Bray, D., Lewis, J., Raff, M., Roberts, K. and Watson, J. D. ( 1994 ). Molecular Biology of the Cell . 3rd edition. New York: Garland Publishing, Inc. Bradley, T. J., Williams, A. E. and Rose, M. R. ( 1999 ). Physiological...

...Leila V. Virkki; Annika Salama; Mikko Nikinmaa ABSTRACT We have measured the effects of oxygen tension on the transport of Na + , K + and Cl − across the erythrocyte membrane of the lamprey Lampetra fluviatilis . The transport of each ion was affected by the oxygen tension of the medium. Hypoxic...

... (ACTH; 7.5 i.u. kg −1 ), serotonin (250 nmol kg −1 ), carbachol (100 μmol kg −1 ), [Asn 1 -Val 5 ]angiotensin II (Ang II; 100 nmol kg −1 ), histamine (0.3–300 μmol l −1 ) and a high-[K + ] saline (60 mmol l −1 ), (2) whether serotonin is co-released with the catecholamines of the chromaffin tissues...

...Elizabeth M. Fitzgerald; Mustafa B. A. Djamgoz; Stuart J. Dunbar ABSTRACT Using a comparative approach, the mechanisms involved in maintenance of the transmembrane K + activity gradients in the larval body-wall muscles of two insects, Phormia terraenovae (Diptera) and Spodoptera exigua (Lepidoptera...

... resulted from a sustained volume-activated release of K + , Cl − and amino acids (AAs). In the absence of ouabain, the cells also lost Na + as released K + was partially regained via the Na + /K + pump. Inorganic osmolytes contributed approximately 70%, and organic osmolytes approximately 30 %, to the RVD...

...R. K. Paley; I. D. Twitchen; F. B. Eddy ABSTRACT Body ammonia content of rainbow trout alevins was about 0.6μmol g −1 but increased to 4 μmol g −1 after 24h of exposure to an external ammonia concentration of 36.2 μmol l −1 NH 3 (15.8mmol l −1 ammonia) at pH7 and 10°C. During ammonia loading...

... of the various membrane channels. 22 10 1986 © 1987 by Company of Biologists 1987 axons crayfish cardiac-like action potentials tungsten electrodes K + Ca 2+ channels This study arose from a chance observation made while using tungsten (W) wire as a substitute for platinum (Pt...