Márcia Neiva

Dr. Márcia Neiva

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Research Focus & Metrics

Academic Career Length

2Years (2025-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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5 December 2025 in Toxins
Verified
Journal Article
Open access
PDF file
LBLisele Brasileiro-Martins
Lisele Brasileiro-Martins
GMGreene Dias Marques
Greene Dias Marques
Jéssica Burlamaque MacielJéssica Burlamaque Maciel
Jéssica Burlamaque Maciel
MNMárcia Neiva
Márcia Neiva
TNThaís Pinto Nascimento
Thaís Pinto Nascimento
MSMarco Aurelio Sartim
Marco Aurelio Sartim
Snake venoms are rich sources of bioactive molecules that modulate hemostasis and, among these, anticoagulant snake venom phospholipases A2 (sPLA2) are found in a range of snake venoms. Crotoxin (CTX), from the Crotalus durissus rattlesnake, is a heterodimeric PLA2 complex, and literature has reported its mechanisms in anticoagulant activity. The present review revisits the biological roles of anticoagulant sPLA2 and critically examines evidence on CTX in hemostatic regulation, aiming to clarify its mechanisms and therapeutic promise. CTX exerts anticoagulant activity via enzymatic hydrolysis of procoagulant phospholipids and direct interaction with coagulation factors, disrupting key complex assembly. It also counteracts inflammation-induced coagulation by modulating leukocyte- and endothelial-derived mediators, restoring balance among anticoagulant, procoagulant, and fibrinolytic pathways. Effects on platelet function appear comparatively modest, ranging from less potent pro-aggregatory activity to negligible aggregation. The dual anticoagulant and anti-inflammatory properties of CTX highlight its potential as a model for novel antithrombotic agents in hypercoagulable and inflammation-driven disorders, despite toxicological concerns that necessitate cautious pharmacological exploration.