CSF ion composition and manipulation during thermoregulation in an avian species, Gallus domesticus

A. A. Maki, M. M. Beck, E. W. Gleaves, J. A. DeShazer, K. M. Eskridge

Research output: Contribution to journalArticle

6 Scopus citations

Abstract

1. 1. At thermoneutrality (28°C), CSF Na+: Ca2+ in hens was 61.66; under thermal stress (39°C), it changed to 59.38 (30 min), 62.58 (3 hr), and 52.44 (10 hr); no change in ratio occurred at 15°C. 2. 2. ICV Ouabain and/or EGTA increased body temperature (TR) but not respiration rate (RR) at 39°C. 3. 3. A 28°C, Ouabain decreased, and EGTA increased, TR and RR. 4. 4. Ca2+ may be more critical than Na+ in thermoregulation. 5. 5. Heat stress appears to stimulate Na+-transport mechanisms other than Na+-ATPase. 6. 6. RR apppears to be a function of TR, not of ion balance.

Original languageEnglish (US)
Pages (from-to)135-140
Number of pages6
JournalComparative Biochemistry and Physiology -- Part A: Physiology
Volume96
Issue number1
DOIs
StatePublished - 1990

ASJC Scopus subject areas

  • Physiology

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