Anticoagulant serine fibrinogenases from Vipera lebetina venom: structure-function relationships.

Identification of Fibrinolytic Activity in Iranian Vipera Lebetina Venom

Background and purpose: Vipera lebetina lives in different areas in Iran, and its venom contains a variety of proteins with coagulant and anticoagulant activities. Fibrinolytic enzymes could have a therapeutic role in dissolution of blood clots, so, this study aimed at separating the venom components of Iranian V. lebetina and detecting its anticoagulant activity. Materials and methods: In thi...

Paraspecificity of Vipera a. ammodytes-specific antivenom towards Montivipera raddei and Macrovipera lebetina obtusa venoms.

Antivenom raised against the venom of nose-horned viper, Vipera ammodytes (V. a.) ammodytes (European viper venom antiserum, Zagreb antivenom), contains neutralising equine F(ab')₂ fragments that are clinically successful against homologous venom, but also against the venoms of several others medically important European snakes due to its paraspecific action. In this work we demonstrated that Z...

Proteases from Vipera lebetina venom affecting coagulation and fibrinolysis.

Our studies of the venom from the Levantine viper Vipera lebetina have demonstrated the existence of both coagulants and anticoagulants in the same venom. We showed that V. lebetina venom contains: (1) proteases that degrade fibrinogen, but not fibrin; (2) fibrinolytic enzyme (lebetase); (3) factor X activator (VLFXA); (4) factor V activator (VLFVA). Fibrinolytic enzyme and VLFXA are metallopro...

Purification of two antibacterial fraction of Vipera lebetina venom

Effect of α-lipoic Acid on Hemolytic Activity of Iranian Vipera Lebetina Venom

Abstract Background and Objective: Snake venom is a complex of several toxic elements and enzymes. It has the agents with the ability to destroy cellular and subcellular membrane and to bring about hemolysis of red blood cells (RBC). Two types of direct and indirect hemolytic activity are known in snake venom in that phospholipase A2 is responsible for the indirect lysis. The aim of this st...