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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...
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The changes in the activities of mucus hydrolytic enzymes and plasma cortisol levels were examined following infection of Atlantic salmon Salmo salar with the salmon louse Lepeophtheirus salmonis and these changes were compared with those resulting from elevated plasma cortisol. Salmon were infected...
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The lack of therapeutic efficacy of antihistaminic drugs in the treatment of asthma has led to the search and discovery of other bronchoconstrictor agents, particularly leukotrienes, thromboxanes, and platelet-activating factor. However, specific receptor antagonist for any of these substances have ...
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The effects of altered water temperature in vivo on in vitro smooth muscle contractility of rainbow trout intestine were investigated. Temperature has a significant effect on receptor-mediated intestinal smooth muscle contractility in the rainbow trout. The efficacy of 5-HT, carbachol, and transmura...
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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...
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1. The ability of cromakalim to modulate several different types of neuroeffector transmission has been assessed in guinea-pig isolated trachea. 2. In trachea treated with propranolol (10(-6) M) and indomethacin (2.8 x 10(-6) M), stimulation of the extrinsic vagal nerves evoked contractions which we...
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Enhancement of allergic tracheal constriction and contraction of the trachea by AA in the presence of cyclooxygenase inhibitors may reflect diversion of AA metabolism from the cyclooxygenase pathway.
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The modulatory effects of adenosine and selected derivatives were examined on antigen and arachidonic acid (AA) induced contractions of indomethacin-treated tracheal spirals and lung parenchymal strips from actively sensitized guinea pigs. Adenosine (up to 2 X 10(-4) M) had no effect on antigen-indu...
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Oleic acid (OA) injection into the lungs of dogs produces pulmonary edema and decreased cardiac output, and the result is combined hypoxic and stagnant hypoxia. Prostacyclin (PGI2) has some effects that may be beneficial in the alleviation of hypoxia. We studied 18 anesthetized dogs that were divide...
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Rev. of Applied Fish Pharmacology, by K.M. Treves-Brown
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Mellavax (avirulent S. dublin vaccine) appears to cause an anaphylactoid reaction in a ratio of 1:28 000 doses sold. A clinical picture of respiratory embarrassment and pulmonary oedema occurs. Histamine, 5-HT and dopamine are implicated mediators released during the reaction but to a minor extent c...