Preprint / Version 1

In vivo assessment of anticoagulant and antiplatelet effects of Syzygium cumini leaves extract in rabbits

Authors

  • Ahad Rehman Department of Pharmacology, Faculty of Pharmacy, Jinnah Sindh Medical University, Rafiqui H.J Shaheed Road, Karachi, 75510 Pakistan
  • Azra Riaz Department of Pharmacology, Faculty of Pharmacy, University of Karachi, Karachi, Pakistan
  • Muhammad Asghar Department of Pharmaceutics, Faculty of Pharmacy, Jinnah Sindh Medical University, Rafiqui H.J Shaheed Road, Karachi, 75510 Pakistan
  • Muhammad Raza Department of Clinical Sciences, Faculty of Medicine, Lund University Hospital, Lund, Sweden
  • Shadab Ahmed Department of Pharmacology, Faculty of Pharmacy, University of Karachi, Karachi, Pakistan
  • Kamran Khan Department of Pharmaceutics, Faculty of Pharmacy, Jinnah Sindh Medical University, Rafiqui H.J Shaheed Road, Karachi, 75510 Pakistan

Keywords:

Syzygium cumini, Coagulation, Platelets, Thrombin, Prothrombin

Abstract

Syzygium cumini (L.) Skeels. is one of the very popular traditionally used medicinal plants with numerous pharmacological activities including antioxidant, hypoglycemic and anti-inflammatory. However, actions of S. cumini on blood coagulation and other parameters of blood were poorly pharmacologically studied. Therefore, aim of this present investigation is to examine the effects of methanolic extract of S. cumini on blood coagulation and anticoagulation factors in healthy white albino rabbits at different doses. Methods Blood samples were drawn twice during this study and biochemical assays were performed to determine the effect on different parameters such as coagulation, anticoagulation, hematological, Protein C (PC) and thrombin antithrombin (TAT) complex and platelet aggregation. Results The results showed significant increase in RBCs, hemoglobin, hematocrit and platelets counts up to 1.4 × 103/cm, 2.2 g/dl, 6%, 248.2 × 103/cm respectively. While, thrombin and bleeding time were also prolonged in dose dependent manner which is highly significant (p ≤ 0.005) as compared to control. Similarly, highly significantly increased (p ≤ 0.005) in levels of protein C, thrombin antithrombin complex at dose of 500 mg/kg were observed. Whereas, levels of platelets aggregation and fibrinogen were decreased at high doses. Conclusion The obtained findings of hematological and coagulation tests concludes possibly S. cumini possess anticoagulant and antiplatelet effects. Keywords: Syzygium cumini, Coagulation, Platelets, Thrombin, Prothrombin

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