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Organophosphates (OPs) are highly neurotoxic compounds and certain OP-compounds are also exploited as a weapon of mass destruction and chemical warfare in terrorist attacks. Available prophylactic and post-exposure treatments are less effective and also have serious side-effects. Thus, there is a dire need to develop effective and safe prophylactic agent(s) against OP-poisoning. Human Paraoxonase 1 (hPON1) can hydrolyze a wide range of OP molecules and can be developed as an effective and safe prophylactic agent. Thus, there is a dire need in the art to develop variant(s) of rhPON1 that not only possess 'good' OP-hydrolyzing activity but also have improved pharmacokinetic properties. In this report, we describe the characterization of the fused hPON1 (FHP) variant that not only exhibit enhanced in vivo pharmacokinetic properties but also delay / prevent the symptoms of OP-poisoning and prevents OP-induced mortality in rats. Copyright © 2023 Elsevier Inc. All rights reserved.


Prakashkumar Dobariya, Pratik Adhya, Bhupesh Vaidya, Prakash Y Khandave, Shyam Sunder Sharma, Abhay H Pande. Fused human paraoxonase 1 as a prophylactic agent against organophosphate poisoning. Enzyme and microbial technology. 2023 Apr;165:110209

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PMID: 36764031

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