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Conclusions:Key words:QUAN-0808 (6-(4-chlorophenoxy)-tetrazolo[5,1-a]phthalazine) was tested for the anticonvulsant, anti-inflammatory, analgesic, anticoagulant, antithrombotic and antidepressant effects.Anticonvulsant activity was testedby electroshock seizure model and neurotoxicity was tested by the rotarod neurotoxicity test in mice. In chemically induced models of seizure like pentylenetetrazole, isoniazid, thiosemicarbazide and 3-mercaptopropionic acid were further tested for the anticonvulsant activity.QUAN-0808 caused significant anticonvulsant activity against all types of seizures. It appreciably reduced xylene-induced ear edema, reduced the prostaglandin E2 and nitric oxide levels on the edema and reduced acetic acid-induced capillary permeability hyperactivity and reduced acetic acid-induced writhing response. It exhibited anti-inflammatory and antinociceptiveeffect in a dose-dependent manner.The peripheral effect mechanisms of QUAN-0808 may be related to a reduced in the formation of PGE2, NO, bradykinin and additional inflammatory mediators. The anticoagulant and antithrombotic effects of Q808 delayed bleeding and clotting time in mice. QUAN-0808 exerts anticoagulant, antithrombotic and antidepressant effect, exhibited a significant reduction in immobility as antidepressant. anticonvulsant, antidepressive, antinociceptive, antithrombotic.
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