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 RESEARCH ARTICLE
Year : 2021  |  Volume : 53  |  Issue : 4  |  Page : 278-285

Natural product topical therapy in mitigating imiquimod-induced psoriasis-like skin inflammation-underscoring the anti-psoriatic potential of Nimbolide


Department of Regulatory Toxicology, National Institute of Pharmaceutical Education and Research, Hyderabad, Telangana, India

Correspondence Address:
Dr. Chandraiah Godugu
Department of Regulatory Toxicology, National Institute of Pharmaceutical Education and Research, Balanagar, Hyderabad - 500 037, Telangana
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/ijp.IJP_591_20

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BACKGROUND: Psoriasis is a chronic inflammatory dermatological disorder having complex pathophysiology with autoimmune and genetic factors being the major players. Despite the availability of a gamut of therapeutic strategies, systemic toxicity, poor efficacy, and treatment tolerance due to genetic variability among patients remain the major challenges. This calls for effective intervention with the superior pharmacological profile. Nimbolide (NIM), a major limonoid is an active chemical constituent found in the leaves of the Indian Neem tree, Azadirachta indica. It has gained immense limelight in the past decades for the treatment of various diseases owing to its anti-proliferative, anti-inflammatory, and anti-cancer potentials. OBJECTIVE: The present study was centered around evaluating the anti-psoriatic effect of NIM in the experimental model of Imiquimod (IMQ)-induced psoriasis-like inflammation model. MATERIALS AND METHODS: Application of IMQ topically on the dorsum of Balb/c mice from day 0-6 prompted psoriasis-like inflammatory symptoms. Treatment groups included topical administration of NIM incorporated carbopol gel formulation and NIM free drug given through subcutaneous route. Protein expression studies such as immunohistochemistry, Western blotting, and ELISA were employed. RESULTS: It was clearly observed from our results that NIM significantly ameliorated the expression of inflammatory and proliferation mediators. Further, NIM in the treatment groups significantly improved classic Psoriasis Area Severity Index scoring when compared to IMQ administered group. CONCLUSION: It is noteworthy that NIM showed a predominant therapeutic effect as compared to other treatment group. To recapitulate, NIM has shown promising activity as an anti-psoriatic agent by remarkably ameliorating inflammation and associated proliferation.






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