CLOT PROMOTING AND DISSOLVING PROPERTIES OF CUCUMBER (CUCUMIS SATIVUS) SAP, VALIDATING ITS USE IN TRADITIONAL MEDICINE
Objective: To investigate the biochemical events that are associated with the skin softening, cleansing and wound healing properties of the cucumber (Cucumis sativus L) sap extract.
Methods: Preparation of cucumber sap extract (CSE). Assay of CSE for proteolytic activity, plasma re-calcification time, APTT, PT, thrombin-like activity, plasmin-like activity, and effect on platelet aggregation and wound healing property by physical, biochemical and histological examinations. Appropriate positive and negative controls were maintained wherever necessary.
Results: CSE decreased the plasma re-calcification time and prothrombin time (PT) and showed factor VII (pro-convertin) like activity. EGTA or EDTA pre-treated CSE did not alter the plasma recalcification time and PT. CSE readily hydrolyzed the plasma clot and azocasein; while, IAA pre-treated CSE did not hydrolyze the plasma clot and azocasein. CSE inhibited the agonists collagen, ADP and epinephrine induced platelet aggregation in PRP in the order epinephrine>collagen>ADP with the respective IC50Â ofÂ 22 Â± 2.5, 20 Â± 3 and 11 Â± 2 Âµg/ml. PMSF pre-treated but not IAA and EDTA pre-treated CSE lost the platelet aggregation inhibition property. Further, CSE augmented wound healing process including the scar removal in a mouse model. The SOD, CAT, GSH activities and hydroxyproline, hexosamine and hexuronic acid contents were increased while, NO, LPO and MPO activities were decreased compared to control values. Histological study revealed accelerated wound healing involving epithelialisation and re-formation of skin following CSE treatment compared to Neosporin.
Conclusion: CSE contain metallo-, serine and cysteine proteases, and interfere in clot formation, dissolution and wound healing process, which validates the use of cucumber as cosmetics and to treat wounds by traditional healers.
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