Electroencephalogram findings demonstrated that gacyclidine inhibited seizures that were induced by soman. It also markedly enhanced clinical recovery of soman-challenged primates. Gacyclidine inhibited the neuropathology that occurred three weeks following soman exposure in animals. In the presence of severe nerve agent poisoning, gacyclidine can be a useful adjuvant therapy along with the present
available polymedications of OP nerve agent poisonings.115 Sodium Bicarbonate It has been suggested that intravenous infusion of sodium bicarbonate produces moderate alkalinization (blood pH between 7.45 and 7.55) in OP pesticide poisoning. Sodium #selleck products keyword# bicarbonate was first used to correct the metabolic acidosis. Regarding its enhanced therapeutic effects, the infusion of higher doses of sodium bicarbonate (5 Inhibitors,research,lifescience,medical mEq/kg in 60 min followed by 5-6 mEq/kg/day) was shown to be useful.116 It may also be effective in nerve agents poisoning, and thus should be added to the treatment regimen.
The alkalinization products of nerve agents such as soman are shown to Inhibitors,research,lifescience,medical be less toxic and hence, the IV infusion of sodium bicarbonate may even be more beneficial in nerve agents poisoning. Magnesium Sulphate Intravenous magnesium sulfate (4 g) given in the first day after admission have been shown to decrease hospitalization period and improve outcomes in patients with OP poisoning.117 Magnesium
sulfate blocks calcium channels and thus reduce acetylcholine release. It also reduced CNS overstimulation resulting from NMDA receptor activation and reversed the neuroelectrophysiological defects.118 Adrenergic Agonists The alpha2-adrenergic receptor agonistssuch as clonidine can reduce acetylcholine Inhibitors,research,lifescience,medical synthesis and release in presynaptic junctions. Although clonidine has been used successfully in Inhibitors,research,lifescience,medical animal models, the therapeutic effects of alpha2-adrenergic receptor agonists on human are not fully known.119 Antioxidants Induction of reactive oxygen radicals and their contributors such as decreased total antioxidant capacity, and increased thiobarbituric reactive substances and lipid peroxidation occur in OP poisoning either as acute, subchronic or see more chronic exposure.120 Thus, antioxidants treatment may be beneficial in these patients. In a study on rats, vitamin E was reported to have therapeutic effects in dimethoate and malathion- induced oxidative stress in rat erythrocytes.121 New Treatments Removal of OPs from blood using haemodialysis, haemoperfusion or haemofiltration is not clear. In a recent report, it was claimed that haemofiltration after dichlorvos poisoning had revealed beneficial therapeutic effects.122 Bio-scavengers such as fresh frozen plasma (FFP) or albumin has been recently suggested as a useful therapy through clearing of free organophosphates.
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