4th Annual Atlantic Universities Aquaculture Conference, Charlottetown , P.E.I. March 5

Arachidonic acid (AA) (66 microM) induced contractions of indomethacin-treated (8.4 microM) guinea-pig tracheal and lung parenchymal preparations. Mepacrine (210 microM) treatment did not affect the magnitude of contraction induced by AA. Normal and ovalbumin-sensitized tissues responded identically...

The contractility of intestinal smooth muscle of Atlantic salmon (Salmo salar) acclimatized to temperatures of 7 and 14 degrees C was compared over a prolonged period of time (9 months) in freshwater. Initial studies were carried out on intestine isolated from Atlantic salmon to estimate optimal con...

We have previously shown that arachidonic acid (AA)-induced contractions of indomethacin-pretreated guinea pig trachea and parenchyma are due to the synthesis of leukotrienes C4 and D4. The present experiments were designed to investigate the role of calcium (Ca2+) in the above. AA (66 microM)-induc...

Arachidonic acid (AA) was used to induce contractions of guinea-pig tracheal and lung parenchymal preparations in the presence of indomethacin. Prior addition of FPL55712, nordihydroguaiaretic acid (NDGA), piriprost, benoxaprofen or nafazatrom, in order of potency, inhibited AA-induced contractions ...

Rev. of Trends in Autonomic Pharmacology, ed. by S. Kalsner

The ability of carbachol and 5-hydroxytryptamine (5-HT) to contract isolated segments of rainbow trout intestine in a concentration-dependent manner indicates the presence of muscarinic and serotoninergic receptors in this tissue. The activity of these agonists appears to be directly on the smooth m...

Adult and mobile preadult sea lice L. salmonis were incubated with mucus samples from rainbow trout (Oncorhynchus mykiss), coho salmon (O. kisutch), Atlantic salmon (Salmo salar), and winter flounder (Pseudopleuronectes americanus) to determine the response of L. salmonis to fish skin mucus as asses...

Antigen and the calcium ionophore A23187 contract isolated tracheal spirals from sensitized guinea pigs and A23187 also contracts normal airways. The contractions appear to be the result of released bronchoconstrictor mediators, likely products of the lipoxygenase pathway of arachidonic acid metabol...

Skin surface mucus contains a number of biologically active substances, including proteinases, shown or suspected to have a role in the innate (nonantibody) defence system of fish. The objective of this study was to determine whether proteinase activity in the skin surface mucus of fish is altered a...