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• W4283727783 abstract "Alpha-latrotoxin (ɑLTx) is the component responsible for causing the pathophysiology in patients bitten by spiders from the genus Latrodectus, commonly known as black widow spiders. The current antivenom used to treat these envenomations in Mexico is produced using the venom of thousands of spiders, obtained through electrical stimulation. This work aimed to produce this protein as well as two of its fragments in a bacterial model, to evaluate their use as immunogens to produce neutralizing hyperimmune sera, in rabbits. ɑLTx is a 130 kDa protein which has not yet been obtained in a soluble active form using bacterial models. In the present work, ɑLTx and two of its fragments, ankyrin domain and amino terminal domain (LTxAnk and LTxNT) were produced in bacteria and solubilized from inclusion bodies using N-lauroyl sarcosine. These three proteins were used for hyperimmunization in order to evaluate their potential as immunogens for the production of neutralizing hyperimmune sera against the complete venom of Latrodectus mactans. The hyperimmune sera obtained using the complete ɑLTx as well as the LTxNT, was capable of preventing death of mice envenomated with 3 LD50s of venom, both in preincubation and rescue experiments. Conversely, the serum obtained using the LTxAnk fragment, generated only partial protection and a delay in the time of death, even with a maximum dose of 450 μL. We therefore conclude that the produced proteins show great potential for their use as immunogens and should be further tested in large animals, such as horses." @default.
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• W4283727783 date "2022-10-01" @default.
• W4283727783 modified "2023-10-01" @default.
• W4283727783 title "Neutralization of black widow spider (Latrodectus mactans) venom with rabbit polyclonal serum hyperimmunized with recombinant alpha-latrotoxin fragments" @default.
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• W4283727783 doi "https://doi.org/10.1016/j.biochi.2022.06.012" @default.
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