A1 Refereed original research article in a scientific journal
VOLUME AND PH REGULATION IN AGNATHAN ERYTHROCYTES - COMPARISONS BETWEEN THE HAGFISH, MYXINE GLUTINOSA, AND THE LAMPREYS, PETROMYZON-MARINUS AND LAMPETRA-FLUVIATILIS
Authors: NIKINMAA M, TUFTS BL, BOUTILIER RG
Publisher: SPRINGER VERLAG
Publication year: 1993
Journal: Journal of Comparative Physiology B
Journal name in source: JOURNAL OF COMPARATIVE PHYSIOLOGY B-BIOCHEMICAL SYSTEMIC AND ENVIRONMENTAL PHYSIOLOGY
Journal acronym: J COMP PHYSIOL B
Volume: 163
Issue: 7
First page : 608
Last page: 613
Number of pages: 6
ISSN: 0174-1578
DOI: https://doi.org/10.1007/BF00302121
Abstract
The responses of hagfish (Myxine glutinosa) and lamprey (Lampetra fluviatilis and Petromyzon marinus) erythrocytes to osmotic swelling in hypoosmotic medium and to acid-base disturbances induced by ammonium chloride prepulse were studied. The erythrocytes of hagfish regulated neither cell volume after osmotic swelling nor intracellular pH after acidification. In contrast, the erythrocytes of lamprey lost potassium and chloride after osmotic swelling, whereby their volume recovered. Furthermore, the red cell pH of lamprey recovered from experimental acidification in a nominally bicarbonate-free medium in the presence of sodium, confirming that the pathway involved is sodium/proton exchange.
The responses of hagfish (Myxine glutinosa) and lamprey (Lampetra fluviatilis and Petromyzon marinus) erythrocytes to osmotic swelling in hypoosmotic medium and to acid-base disturbances induced by ammonium chloride prepulse were studied. The erythrocytes of hagfish regulated neither cell volume after osmotic swelling nor intracellular pH after acidification. In contrast, the erythrocytes of lamprey lost potassium and chloride after osmotic swelling, whereby their volume recovered. Furthermore, the red cell pH of lamprey recovered from experimental acidification in a nominally bicarbonate-free medium in the presence of sodium, confirming that the pathway involved is sodium/proton exchange.
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