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  • Title: Enhancement of cancer chemotherapeutic efficacy of cyclophosphamide by Curculigo orchioides Gaertn and its ameliorative effects on cyclophosphamide-induced oxidative stress.
    Author: Murali VP, Kuttan G.
    Journal: Integr Cancer Ther; 2015 Mar; 14(2):172-83. PubMed ID: 25575532.
    Abstract:
    Cyclophosphamide (CTX) is a synthetic antineoplastic drug with severe and life-threatening side effects. Studies in search of protective agents, preferably natural products, that can alleviate these side effects are valuable because they can contribute to improve current chemotherapeutic treatment strategies. Curculigo orchioides Gaertn (family Hypoxidaceae) is well known for its medicinal use in the Indian Ayurvedic system of medicine, and various studies have been reported that proved its immunomodulatory and anti-inflammatory properties. In this study, the tumor reduction capacity of CTX in combination with C orchioides methanolic extract was studied using Dalton's lymphoma ascites-induced solid tumor models. Effect of C orchioides on the reversal of the damage induced by CTX administration (intraperitoneally) was also determined in this study. For this, solid tumor volume, serum cytokine levels, hematolological parameters, intestinal histopathology, and serum and tissue biochemical parameters (Glutathione [GSH], alkaline phosphatase [ALP], glutamate pyruvate transaminase [GPT], lipid peroxidation [LPO]) were analyzed. Immune suppression and increased serum proinflammatory cytokine levels caused by CTX administration (25 mg/kg body weight) were reversed by C orchioides (20 mg/kg body weight). The alcoholic extract enhanced the tumor reduction capacity of CTX and reduced GPT and ALP levels in liver and serum, which were elevated by CTX administration. The LPO level was also lower in the CTX-administered animals when treated with the C orchioides extract. In conclusion, the plant extract when administered in combination with CTX, can result in enhanced anticancer properties; it also ameliorates the toxic side effects of CTX.
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