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The aim of the present study was to evaluate in hypothalamus and hindbrain of rainbow trout in vitro the effect of leptin treatment on glucosensing capacity and the expression of orexigenic and anorexigenic peptides involved in the control of food intake. In a first experiment, the response of parameters involved in glucosensing (GK, PK and GSase activities; GK expression and glucose; glycogen and...
In fish food intake is altered under stress conditions, and in a fish teleost model like rainbow trout food intake is associated with the activity of the glucosensor systems. Thus, we aimed to evaluate the possible interaction of stress with the response of glucosensor mechanisms in rainbow trout. Thus, we subjected rainbow trout (via intraperitoneal injections) to normoglycaemic (control), hypoglycaemic...
The aim of the present study was to obtain evidence for the possible modulatory effect of leptin on glucosensing capacity in hypothalamus and hindbrain of rainbow trout. In a first experiment, trout were injected ICV with saline alone or containing increased doses of leptin (0.3–30μgμl −1 ). Leptin induced in general in both hypothalamus and hindbrain dose-dependent changes in parameters related...
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