The effects of inhibitors of the cyclooxygenase and lipoxygenase pathways of arachidonic acid (AA) metabolism were studied on the contractions of guinea pig tracheal spirals and lung parenchymal strips induced by antigen and calcium ionophore A23187. Inhibition of the cyclooxygenase pathway with ind...

14th Annual Meeting of the Aquaculture Association of Canada, Quebec City, June 10-12

Specific radioimmunoassays were used to demonstrate the synthesis by the guinea pig trachea of 6-keto PGF1 alpha, TxB2, and PGF2 alpha in addition to PGE2. The rank order of both spontaneous and stimulated release was PGE2 greater than PGF2 alpha greater than 6-keto PGF1 alpha = TxB2. Ovalbumin-indu...

Ovalbumin (OA) and arachidonic acid (AA) were used to induce contractions of sensitized guinea-pig tracheal and lung preparations in the presence and absence of indomethacin. Leukotriene (LT)C4-like material released from these tissues was extracted from the bathing fluid and measured by radioimmuno...

Experiments were conducted to examine the variability between Atlantic salmon parr acclimated to 7 degrees C (n=150) and those acclimated to 14 degrees (n=150) over a year. Fish were stocked into tanks (2.32 x 2.32 x 0.52 m) at 10.5 kg/msuperscript 3. The condition factor remained similar for both g...