@article{ref1,
title="Mechanism of in vivo anticoagulant and haemolytic activity by a neutral phospholipase A2 purified from Daboia russelii russelii venom: Correlation with clinical manifestations in Russell's Viper envenomed patients",
journal="Toxicon: Journal of the International Society on Toxinology",
year="2013",
author="Saikia, Debashree and Majumdar, Sourav and Mukherjee, Ashis K.",
volume="76",
number="",
pages="291-300",
abstract="A 13.0 kDa neutral phospholipase A2 (NEUPHOLIPASE) purified from venom of Daboia russelii russelii from eastern India was identified by peptide mass fingerprinting analysis. It exerted dose-dependent PLA2, anticoagulant and indirect haemolytic activities. NEUPHOLIPASE showed preferential binding followed by hydrolysis of phosphatidylserine> phosphatidylcholine> phosphatidylethanolamine. Circular dichroism analysis of NEUPHOLIPASE showed a high content of alpha helix (54.6 %) followed by beta-turn (29.7 %) in its secondary structure. Gas-chromatographic analysis of plasma from PLA2-treated mice suggested preferential hydrolysis of pro-coagulant phospholipid PS was the primary mechanism to account for in vivo anticoagulant effect of NEUPHOLIPASE. The NEUPHOLIPASE-treated mice blood showed a significant decrease (p <0.01) in WBC as well as RBC counts with a corresponding decline in Hb content due to indirect damage to erythrocyte membranes by plasma phospholipids hydrolysis products rather than the direct haemolytic activity of PLA2 under study. NEUPHOLIPASE was non-lethal to BALB/c mice, however; it was detrimental to liver of treated-mice. Pathological symptoms observed in NEUPHOLIPASE-treated mice were correlated with the actual clinical manifestations in Russell's Viper envenomed patients from eastern India indicating some contribution of NEUPHOLIPASE in Russell's Viper venom induced toxicity and pathogenesis.<p /> <p>Language: en</p>",
language="en",
issn="0041-0101",
doi="10.1016/j.toxicon.2013.10.001",
url="http://dx.doi.org/10.1016/j.toxicon.2013.10.001"
}