Factors in Haemolymph of the Mussel, <i>Mytilus edulis</i> L., of Possible Significance as Defence Mechanisms

Hardy, Stephen W.; Fletcher, Thelma C.; Gerrie, Linda M.

doi:10.1042/bst0040473

Cited by 33 publications

(10 citation statements)

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“…Lysozyme was regarded by Lie et al (1989) as a participant of the first line of defence, with high activities in mucus, gills and alimentary tract, and the protective role of this enzyme is to prevent bacterial penetration from the outside (Hardy et al 1976;Jolles & Jolks 1984;Grinde 1989).…”

Section: Discussionmentioning

confidence: 99%

Effect of gelatinized wheat and maize in diets for large Atlantic salmon (Salmo salar L.) on glycogen retention, plasma glucose and fish health

Hemre¹,

Waagbø²,

Hjeltnes³

et al. 1996

Aquaculture Nutrition

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This publication reports on analytical data from a large‐scale experiment, using 3360 Atlantic salmon, Salmo salar L., distributed into 12 sea cages. Salmon were grown from an average 600 g to an average 3.5 kg. Samples for analyses were taken when fish were in the range of 1.8 and 3.5 kg. Dietary changes between groups were increased starch from 24 to 230 g kg−1 and balanced with protein. The diets were isolipic. All salmon showed small stores of glycogen in all analysed organs, and only in heart, gills and kidney of large fish (3.5 kg) were the levels correlated with dietary starch. Minor differences between groups were found in liver NADPH production, but with substantially decreased NADPH production per g protein as the fish grew from 1.8 to 3.5 kg, indicating that increasing dietary starch did not lead to induction of liver hexokinase, and that the activity of this enzyme may decline as fish size increases. An increase in plasma glucose concentrations was found as dietary starch increased, but all levels were moderate and ranged within reference values. Plasma total protein concentrations did not, however, vary according to decreased dietary protein, but increased substantially in all groups as the fish grew from 1.8 to 3.5 kg. Dietary treatments had no influence on haematological parameters, except for decreased haemoglobin concentrations as dietary starch increased in large fish (3.5 kg). No impared liver function was detected, evaluated by activities of ASAT, ALAT and LDH, and by histological analyses. Low serum lysozyme activities were recorded in all groups, and were not correlated with plasma glucose or liver glycogen concentrations.

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Section: Discussionmentioning

confidence: 99%

Effect of gelatinized wheat and maize in diets for large Atlantic salmon (Salmo salar L.) on glycogen retention, plasma glucose and fish health

Hemre¹,

Waagbø²,

Hjeltnes³

et al. 1996

Aquaculture Nutrition

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“…Sialic acid-binding lectins from the hem olym ph o f inver tebrates m ay functionally be equivalent to verte brate antibodies in defence m echanism s [56,108]. They can even facilitate phagocytosis [109], F rog egg lectin m ay be involved in fertilization and de velopm ent in the frog em bryo [79].…”

Section: Biological Activities and Functionsmentioning

confidence: 99%

“…A m erican lo bster [47], fresh w ater p raw n [48], black tiger praw n [49] and bee tles [50], and in m any species o f M ollusca, e.g. snails [5 1 -5 4 ], sea slug [55], sea m ussel [56] and pacific oyster [57]. A s can also be seen from Table I, few o f these lectins have been purified and biochem ically characterized, leaving a large te rri tory to be carefully m apped.…”

Section: Invertebratesmentioning

confidence: 99%

Sialic Acid-Binding Proteins: Characterization, Biological Function and Application

Zeng

Gabius

1992

Zeitschrift Für Naturforschung C

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The last decade has witnessed steadily growing support for the notion that the carbohydrate portion of glycoconjugates is not merely an inert structural addition to the protein or lipid backbone. Considerable attention has been given to the chemical composition o f glycosidic residues in such heteropolymers. Sialic acids are frequently occurring components o f oligosac charide side chains in glycoconjugates of most higher animals and a few microorganisms. They appear to play an important role as ligands in glycobiological interactions. Mediation of a proposed protein-carbohydrate recognition will necessarily involve a binding protein with the respective specificity. Such proteins thus are able to serve as receptors for certain types of carbohydrate moieties like sialic acids in vivo. Various members of this class o f proteins have already proven their value as analytical tools in studying expression and localization o f de fined sialoglycoconjugates. These proteins attract much attention due to both their functions in situ and their potential as laboratory tools in glycoconjugate research in areas like biochem istry or histology. We present a survey of the purification, characterization and application of this class o f proteins to illustrate the status of knowledge and the current directions of research in this field.In v ite d T re n d s A rticle

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“…Seasonal changes in the environmental factors affect number, type and defensive capacity of hemocytes (Feng 1965, Thompson et al 1978, Fisher et al 1989. However, it is believed that changes in lysozyme, agglutinin and proteins reflect internal defense mechanisms (Tripp 1966, McDade & Tripp 1967, Feng & Canzonier 1970, Hardy et al 1976. Alterations in the components of the hemolymph associated with parasites have been attributed to the release of materials from damaged tissue (Feng & Canzonier 1970, Ford et 'Addressee for correspondence al.…”

Section: Introductionmentioning

confidence: 99%

Seasonal changes in hemocytes and serum defense factors in the blue mussel Mytilus galloprovincialis

Santarem¹,

Robledo²,

Figueras³

1994

Dis. Aquat. Org.

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Hemolymph characteristics were examined in experimentally cultured blue mussels Mytilus galloprovincialis Lmk, from 2 locations in the Ria d e Vigo (NW Spain). The highest protein, lysozyrne and agglutinin values were found in July. The increase of agranular hemocytes and the decrease of granular blood cells in April was associated with parasitism by Mytilicola intestinalis. No linkage was found between the number of circulating hemocytes and hemolymph component (lysozyrne, agglutinins and proteins) concentrations with parasitism. It is suggested that the number of circulating hemocytes, lysozyme and proteins levels and agglutination titer were related to the reproductive cycle and varied according to the location of mussels.

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Factors in Haemolymph of the Mussel, Mytilus edulis L., of Possible Significance as Defence Mechanisms

Cited by 33 publications

References 0 publications

Effect of gelatinized wheat and maize in diets for large Atlantic salmon (Salmo salar L.) on glycogen retention, plasma glucose and fish health

Effect of gelatinized wheat and maize in diets for large Atlantic salmon (Salmo salar L.) on glycogen retention, plasma glucose and fish health

Sialic Acid-Binding Proteins: Characterization, Biological Function and Application

Seasonal changes in hemocytes and serum defense factors in the blue mussel Mytilus galloprovincialis

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