Digestive proteases in the holocephalian fish Chimaera monstrosa (L.)

Nilsson, Arne A.; Fänge, Ragnar

doi:10.1016/0010-406x(69)92175-6

Cited by 16 publications

(2 citation statements)

References 26 publications

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“…1.2 MgCl 2 , 11 D-glucose, and 2.5 CaCl 2 ). While previous studies have used variations on the Krebs solution for the study of gut motility in fish, 12,27,28 we found no evidence to suggest that standard Krebs would inhibit gut motility. In the dish, the connective mesentery and fat were removed with sharp dissection, ensuring the intestine was not perforated.…”

Section: Key Pointscontrasting

confidence: 90%

Identification of neurogenic intestinal motility patterns in silver perch (Bidyanus bidyanus) that persist over wide temperature ranges

Jones

Keightley

Harris

et al. 2020

Neurogastroenterology Motil

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The gastrointestinal (GI) tract consists of a hollow tube of largely smooth muscle, through which ingested contents can be absorbed and waste material excreted to the outside world. 1 In mammals, the contractile activity of the smooth muscle, responsible for the movement of content within the digestive tract has been studied for many years. Propagating contractions have been recorded from many mammalian species including humans. 2 While most studies focus on antegrade (or anally) propagating motor patterns, retrograde motor

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Section: Key Pointscontrasting

confidence: 90%

Identification of neurogenic intestinal motility patterns in silver perch (Bidyanus bidyanus) that persist over wide temperature ranges

Jones

Keightley

Harris

et al. 2020

Neurogastroenterology Motil

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“…Furthermore, there was a corresponding increase in proteolytic enzyme activity of crude extract from the pyloric caecae and intestine of sea bass given the formulated diet. An increase in proteolytic enzyme activity may be due to the fact that the presence of ingested protein in the intestine of sea bass stimulated the secretion of enteropeptidase in the intestinal mucosa, which catalyzes the conversion of trypsinogen to trypsin and chymotrypsinogen to chymotrypsin (Nillson & Fange 1969).…”

Section: Discussionmentioning

confidence: 99%

Proteolytic enzyme activity of juvenile Asian sea bass,Lates calcarifer(Bloch), is increased with protein intake

Eusebio¹,

Coloso²

2002

Aquaculture Research

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The effect of high dietary protein intake on proteolytic enzyme activity of feeding juvenile Asian sea bass, Lates calcarifer (Bloch) was studied. Ninety fish [mean body weight ± standard error (SE) 304.62 ± 34.84 g] were randomly assigned to two dietary treatments, each with three replicates. In treatment 1, fish were fed by‐catch (Thunnus albacares) and in treatment 2, a formulated diet containing 50% protein. Proteolytic enzyme activity was determined in pyloric caecae and intestine at day 0, 7, 15, and 30. Initial proteolytic enzyme activity in sea bass ranged from 174 to 232 azocasein units (UAC.) per mg of protein. After 7 days there was no significant difference in proteolytic enzyme activity of fish fed the two diets. However, a marked increase was observed in fish fed the formulated diet at day 15. After 30 days, the proteolytic enzyme activity in fish fed the formulated diet was threefold higher than that in fish fed the by‐catch diet. Fish fed the formulated diet had significantly higher total protein intake at day 7 than did fish fed by‐catch. Thereafter, a twofold weekly increase in the total protein intake was observed in both fish fed the by‐catch and formulated diets until day 30. These results suggest that a high dietary protein intake induces increased proteolytic enzyme activity in Asian sea bass.

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Digestion

Hofer¹

1991

Cyprinid Fishes

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Digestive proteases in the holocephalian fish Chimaera monstrosa (L.)

Cited by 16 publications

References 26 publications

Identification of neurogenic intestinal motility patterns in silver perch (Bidyanus bidyanus) that persist over wide temperature ranges

Identification of neurogenic intestinal motility patterns in silver perch (Bidyanus bidyanus) that persist over wide temperature ranges

Proteolytic enzyme activity of juvenile Asian sea bass,Lates calcarifer(Bloch), is increased with protein intake

Digestion

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