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Table 2.

Plasma levels of salicylate in plasma of gilthead seabream, after they were fed a diet low in arachidonic acid (low-ArA) or a diet enriched with ArA(high-ArA)

Treatment*Time (min)Salicylate (μmol l−1)
Low-ArA 116.5±9.9 
 20 118.9±15.0 
 60 103.5±20.5 
 24 h 13.8±12.0 
Low-ArA+ASA 290.4±46.3 
 20 335.3±60.0 
 60 200.6±39.7 
 24 h 42.3±5.8 
High-ArA 95.0±12.2 
 20 121.3±22.4 
 60 127.4±54.1 
 24 h 46.8±5.7 
High-ArA+ASA 282.4±71.5 
 20 277.2±62.9 
 60 402.2±136.8 
 24 h 38.2±13.9 
Treatment*Time (min)Salicylate (μmol l−1)
Low-ArA 116.5±9.9 
 20 118.9±15.0 
 60 103.5±20.5 
 24 h 13.8±12.0 
Low-ArA+ASA 290.4±46.3 
 20 335.3±60.0 
 60 200.6±39.7 
 24 h 42.3±5.8 
High-ArA 95.0±12.2 
 20 121.3±22.4 
 60 127.4±54.1 
 24 h 46.8±5.7 
High-ArA+ASA 282.4±71.5 
 20 277.2±62.9 
 60 402.2±136.8 
 24 h 38.2±13.9 

Fish were exposed to a stressor (5 min confinement in a dip-net) and samples were collected just before (t=0) and at intervals after confinement (20 min, 60 min, 24 h). The groups that were treated with acetylsalicylic acid (+ ASA) were confined 4 h after the last dose of 100 mg ASA kg−1 body mass.

Values are means ± s.e.m. of 10 fish.

*

Dietary ArA had no effect on salicylate levels, which were significanlty higher in seabream that received ASA (P<0.001).

In all four treatments, plasma salicylate levels were significantly lower after 24 h than at all other time points (P<0.001). The interaction between ASA administration and time of sampling was significant(P=0.013).

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