LotaV3, Main, Exploration, bibRecord, 000A45

Amylolytic activity in fish intestinal mucosa: temperature effects.

Identifieur interne : 000A45 ( Main/Exploration ); précédent : 000A44; suivant : 000A46

Amylolytic activity in fish intestinal mucosa: temperature effects.

Auteurs : V. Kuz'Mina [Russie] ; L. Glatman ; V. Drabkin ; A. Gelman

Source :

Comparative biochemistry and physiology. Part B, Biochemistry & molecular biology [ 1096-4959 ] ; 2003.

RBID : pubmed:12628384

Descripteurs français

KwdFr :
- Activation enzymatique (MeSH), Amylases (métabolisme), Animaux (MeSH), Cinétique (MeSH), Muqueuse intestinale (enzymologie), Poissons (MeSH), Protéines de poisson (métabolisme), Spécificité d'espèce (MeSH), Système digestif (enzymologie), Température (MeSH), Thermodynamique (MeSH).
MESH :
- enzymologie : Muqueuse intestinale, Système digestif.
- métabolisme : Amylases, Protéines de poisson.
- Activation enzymatique, Animaux, Cinétique, Poissons, Spécificité d'espèce, Température, Thermodynamique.

English descriptors

KwdEn :
- Amylases (metabolism), Animals (MeSH), Digestive System (enzymology), Enzyme Activation (MeSH), Fish Proteins (metabolism), Fishes (MeSH), Intestinal Mucosa (enzymology), Kinetics (MeSH), Species Specificity (MeSH), Temperature (MeSH), Thermodynamics (MeSH).
MESH :
- chemical , metabolism : Amylases, Fish Proteins.
- enzymology : Digestive System, Intestinal Mucosa.
- Animals, Enzyme Activation, Fishes, Kinetics, Species Specificity, Temperature, Thermodynamics.

Abstract

The activity, temperature characteristics and energy of activation of amylolytic enzymes in the intestinal mucosa were studied in six species of fish living in a boreal zone [burbot (Lota lota L.), northern pike (Exos lucius L.), perch (Perca fluviatilis L.), bream (Abramis brama L.), roach (Rutilis rutilis L.), and carp (Cyprinus carpio L.)] and in three species from tropical and subtropical areas [pilchard (Sardina pilchardus W.), jack mackerel (Trachurus trecae C.) and round sardinella (Sardinella aurita V.)]. The amylolytic activity correlated with the feeding habits: it was essentially lower in predators. The enzyme activity at low temperature, relative to the maximal activity, was correlated with the natural environmental temperature where the species lived. At low temperature the relative activity was higher in boreal fish than in tropical and subtropical fish. We found a breakpoint in the Arrhenius plots in all fish species, except for jack mackerel. The energy of activation in predators decreased below the breakpoint in the low-temperature region. The energy of activation in benthophages of the Aral-Ponto-Caspian area was lower at higher temperatures above the breakpoint. A reduction in activation energy in the range of physiological temperatures might indicate adaptation to the environmental temperature.

PubMed: 12628384

Affiliations:

Russie

Le document en format XML

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<term>Enzyme Activation (MeSH)</term>
<term>Fish Proteins (metabolism)</term>
<term>Fishes (MeSH)</term>
<term>Intestinal Mucosa (enzymology)</term>
<term>Kinetics (MeSH)</term>
<term>Species Specificity (MeSH)</term>
<term>Temperature (MeSH)</term>
<term>Thermodynamics (MeSH)</term>
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<keywords scheme="KwdFr" xml:lang="fr"><term>Activation enzymatique (MeSH)</term>
<term>Amylases (métabolisme)</term>
<term>Animaux (MeSH)</term>
<term>Cinétique (MeSH)</term>
<term>Muqueuse intestinale (enzymologie)</term>
<term>Poissons (MeSH)</term>
<term>Protéines de poisson (métabolisme)</term>
<term>Spécificité d'espèce (MeSH)</term>
<term>Système digestif (enzymologie)</term>
<term>Température (MeSH)</term>
<term>Thermodynamique (MeSH)</term>
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<front><div type="abstract" xml:lang="en">The activity, temperature characteristics and energy of activation of amylolytic enzymes in the intestinal mucosa were studied in six species of fish living in a boreal zone [burbot (Lota lota L.), northern pike (Exos lucius L.), perch (Perca fluviatilis L.), bream (Abramis brama L.), roach (Rutilis rutilis L.), and carp (Cyprinus carpio L.)] and in three species from tropical and subtropical areas [pilchard (Sardina pilchardus W.), jack mackerel (Trachurus trecae C.) and round sardinella (Sardinella aurita V.)]. The amylolytic activity correlated with the feeding habits: it was essentially lower in predators. The enzyme activity at low temperature, relative to the maximal activity, was correlated with the natural environmental temperature where the species lived. At low temperature the relative activity was higher in boreal fish than in tropical and subtropical fish. We found a breakpoint in the Arrhenius plots in all fish species, except for jack mackerel. The energy of activation in predators decreased below the breakpoint in the low-temperature region. The energy of activation in benthophages of the Aral-Ponto-Caspian area was lower at higher temperatures above the breakpoint. A reduction in activation energy in the range of physiological temperatures might indicate adaptation to the environmental temperature.</div>
</front>
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<name sortKey="Glatman, L" sort="Glatman, L" uniqKey="Glatman L" first="L" last="Glatman">L. Glatman</name>
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<country name="Russie"><noRegion><name sortKey="Kuz Mina, V" sort="Kuz Mina, V" uniqKey="Kuz Mina V" first="V" last="Kuz'Mina">V. Kuz'Mina</name>
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Amylolytic activity in fish intestinal mucosa: temperature effects.

Amylolytic activity in fish intestinal mucosa: temperature effects.

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri

Pour générer des pages wiki

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