Antioxidant and free radical scavenging potential of Citrullus colocynthis (L.) Schrad. methanolic fruit extract.

Department of Pharmaceutical Sciences, Kurukshetra University, Kurukshetra-136119 Haryana, India.
Acta Pharmaceutica (Impact Factor: 1.16). 07/2008; 58(2):215-20. DOI: 10.2478/v10007-008-0008-1
Source: PubMed

ABSTRACT Citrullus colocynthis (L.) Schrad. (Cucurbitaceae) is a medicinal plant traditionally used as an abortifacient and to treat constipation, oedema, bacterial infections, cancer and diabetes. Preliminary phytochemical screening of the plant showed the presence of large amounts of phenolics and flavonoids. Subsequent quantification showed the presence of 0.74% (m/m) phenolics (calculated as gallic acid) and 0.13% (m/m) flavonoids calculated as catechin equivalents per 100 g of fresh mass. The presence of phenolic compounds prompted us to evaluate its antioxidant activity. In the present study, methanolic fruit extract of C. colocynthis was screened to evaluate its free radical scavenging effect. The highest antioxidant and free radical scavenging ability of the fruit extract was observed at a concentration of 2500 microg mL(-1).

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    ABSTRACT: Diabetic neuropathy is probably the most common complication of diabetes mellitus. Secondary preventive measures for diabetic neuropathy with delaying, stopping or even reversing progressive course of neuropathy, pain control and prevention of ulceration can play important role in diabetic patients care. Oxidative stress plays an important role in pathogenesis of diabetic neuropathy. Treatments for diabetic neuropathy have been mainly focused on two purposes, pain control and repair of nerve injury. Therapeutic options for nerve injuries may not improve or even exacerbate painful symptoms. On the other hand most of treatments for pain control have little or no effect on nerve function. As a result of mentioned discrepancy between ‘nerve protection’ and ‘pain control’ in the treatment of painful diabetic neuropathy, it is hypothesized that Citrullus colocynthis as a therapeutic agent with simultaneous antioxidative and anesthetic effects can play an important role in treatment of painful diabetic neuropathy. Previous in vitro and animal studies of C.colocynthis demonstrated its ‘antioxidative’, ‘anesthetic’ and ‘antiulcerogenic’ effects. A randomized controlled double-blind clinical trial is needed to evaluate this hypothesis. Key words: Citrullus colocynthis; Nerve repair; Oxidative stress; Pain control; Painful diabetic neuropathy
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