winter semestr: design of the experiment, induction of chronic constriction injury, pain threshold evaluation, motor coordination evaluation summer semestr: data analysis and interpretation, presentation of the results
Baclofen, which is a specific agonist of the metabotropic GABAB receptor, is used in clinical practice for the treatment of spasticity of skeletal muscles. It also exerts an analgesic effect, but this effect is still not clear and especially controversial in neuropathic pain, and is accompanied by myorelaxation. In experimental animals myorelaxation itself may interfere with pain tests based on paw withdraw. Besides direct activation of GABAB receptors, CGP - an allosteric modulator was identified recently. The aim of the SRA is to find out (1) analgesic and subanalgesic dose of CGP (the high and low dose), (2) effect of the high and low dose on motor coordination, (3) analgesic potency of combination of the low dose CGP and low dose baclofen (the mixture), and (4) effect of the mixture on motor coordination.