The effects of vasoactive agents on the functional surface area of isolated perfused gills of rainbow trout

H. L. Bergman, Kenneth Olson, P. O. Fromm

Research output: Chapter in Book/Report/Conference proceedingChapter

15 Citations (Scopus)

Abstract

The relative functional surface area of isolated perfused gills was evaluated by measuring the influx of 14C urea, a passively diffusing molecule. The catecholamines, norepinephrine and epinephrine, increase gill surface area and decrease overall branchial vascular resistance. Surface area and resistance effects of adrenergic agonists and blocking agents demonstrated the presence of both α and β adrenergic receptors in rainbow trout gills. Stimulation of α adrenergic receptors increased both functional surface area and branchial vascular resistance, while β adrenergic receptor stimulation increased functional surface area but decreased branchial vascular resistance. Acetylcholine decreased functional gill surface area and increased overall branchial vascular resistance. The data presented strongly indicate that the functional surface area of rainbow trout gills can be regulated by changing perfusion pathway with adjustments in the relative vascular resistance across the different pathways.

Original languageEnglish (US)
Title of host publicationJ.COMP.PHYSIOL.SER.B
Pages267-286
Number of pages20
Volume94
Edition4
StatePublished - 1974
Externally publishedYes

Fingerprint

Oncorhynchus mykiss
Vascular Resistance
Adrenergic Receptors
Adrenergic Agonists
Adrenergic Antagonists
Epinephrine
Acetylcholine
Catecholamines
Urea
Norepinephrine
Perfusion

ASJC Scopus subject areas

  • Medicine(all)

Cite this

Bergman, H. L., Olson, K., & Fromm, P. O. (1974). The effects of vasoactive agents on the functional surface area of isolated perfused gills of rainbow trout. In J.COMP.PHYSIOL.SER.B (4 ed., Vol. 94, pp. 267-286)

The effects of vasoactive agents on the functional surface area of isolated perfused gills of rainbow trout. / Bergman, H. L.; Olson, Kenneth; Fromm, P. O.

J.COMP.PHYSIOL.SER.B. Vol. 94 4. ed. 1974. p. 267-286.

Research output: Chapter in Book/Report/Conference proceedingChapter

Bergman, HL, Olson, K & Fromm, PO 1974, The effects of vasoactive agents on the functional surface area of isolated perfused gills of rainbow trout. in J.COMP.PHYSIOL.SER.B. 4 edn, vol. 94, pp. 267-286.
Bergman HL, Olson K, Fromm PO. The effects of vasoactive agents on the functional surface area of isolated perfused gills of rainbow trout. In J.COMP.PHYSIOL.SER.B. 4 ed. Vol. 94. 1974. p. 267-286
Bergman, H. L. ; Olson, Kenneth ; Fromm, P. O. / The effects of vasoactive agents on the functional surface area of isolated perfused gills of rainbow trout. J.COMP.PHYSIOL.SER.B. Vol. 94 4. ed. 1974. pp. 267-286
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