Metabolic Alterations of Catechoiamines and Other Compounds In Elasmobranch Tissues

Eg, Trams; Brown, B.J.

doi:10.3181/00379727-125-32062

Cited by 4 publications

(2 citation statements)

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“…In spite of the fact that the two enzymes have been demonstrated in various tissues of nonmammalian vertebrates (birds: Hall et al 1985;Suzuki et al 1980;amphibians: Hall and Uruefia 1983;Uruefia and Hall 1982a, b; teleost fish Salmo gairdneri : Mazeaud 1974;Edwards et al 1986: Carassius auratus: Hall and Uruefia 1982; elasmobranch fish Squalus acanthias: Trams and Brandenburger-Brown 1967) the relative importance of the two enzymes or the fate of catecholamines within the two different compartments in tissues of these species is still unknown.…”

Section: Introductionmentioning

confidence: 99%

The fate of noradrenaline and adrenaline in the perfused cod spleen

Ungell

1989

Fish Physiol Biochem

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The time course of appearance of catecholamine metabolites was studied in the spleen of cod,Gadus morhua, during perfusion with radioactively labelled noradrenaline and adrenaline at 10°C. The tlag for appearance of the metabolites ranged between 1.78 and 6.76 min after onset of perfusion for both amines, indicating a rapid disposition of catecholamines. Perfusion with noradrenaline resulted in mainly MOPEG, VMA and DOMA formation, while perfusion with adrenaline additionally resulted in MN formation. There was still formation of deaminated metabolites after denervation, which indicates an additional non-neuronal site of deamination. It is concluded from the study that the fate of noradrenaline and adrenaline within the cod spleen depends on their affinities for the two uptake mechanisms and an extraneuronal site of deamination of great importance cannot be excluded.

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Section: Introductionmentioning

confidence: 99%

The fate of noradrenaline and adrenaline in the perfused cod spleen

Ungell

1989

Fish Physiol Biochem

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“…In the elasmobranch fIshes, the liver is the major organ for the storage and metabolism of lipids (HaIIgren and Larsson 1962, Trams and Brown 1967, Matins 1968, Bone and Roberts 1969, Matins and Barone 1970, Patent 1970; indeed, in some chondrychthyean species, lipids represent as much as 80% of the wet weight of the organ (Patent 1970). This amount may decrease signifIcantly following the administration of cortisol and corticosterone (Patent 1970), two hormones which cause lipolysis in the mammalian liver (Klausner and Heimberg 1967).…”

Section: Introductionmentioning

confidence: 99%

Effects of Epinephrine and Norepinephrine on the Hepatic Lipids of the Nurse Shark, Ginglymostoma cirratum

Lipshaw¹,

Patent²,

Foà³

1972

Horm Metab Res

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The lipid and fatty acid composition and the effect of epinephrine and of norepinephrine upon acetate-I-14 C incorparation into liver lipids were studied in the nurse shark. The total lipid content varied between 3.5 and 12.8% of the fresh weight of the organ, an amount significantly lower than that found in the liver of other elasmobranchs. The triglycerides represented about 60% and the phospholipids about 10% of the total extractable lipids, whereas in mammals, these fractions represent 30% and 65% of the total lipid, respectively. Of the total fatty acid content, over 40% was represented by C: 20 and C: 22 fatty acids; 36% was represented by C:18, C:20 and C:22 polyunsaturated fatty acids. Epinephrine and norepinephrine caused I significant decrease in the total uptake of acetate-I-14 C in the liver lipids, but their effeets on the different lipid fraotions were variable. The results are eonsistent with the nations that liver is an important organ for the storage of fat and that the catecholamines have a lipolytie role in elasmabraneh fishes.

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Hepatic insufficiency in spawning Pacific salmon

Trams

1969

Mar. Biol.

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Metabolic Alterations of Catechoiamines and Other Compounds In Elasmobranch Tissues

Cited by 4 publications

References 0 publications

The fate of noradrenaline and adrenaline in the perfused cod spleen

The fate of noradrenaline and adrenaline in the perfused cod spleen

Effects of Epinephrine and Norepinephrine on the Hepatic Lipids of the Nurse Shark, Ginglymostoma cirratum

Hepatic insufficiency in spawning Pacific salmon

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