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Emblica officinalis corrects functional, biochemical and molecular deficits in experimental diabetic neuropathy by targeting the oxido-nitrosative stress mediated inflammatory cascade.

Abstract

Diabetic neuropathy is one of the most common microvascular complications of diabetes mellitus which affects more than 50% of diabetic patients. Diabetic neuropathic pain is amongst the most difficult types of pain to treat mainly due to the lack of understanding of its etiology and inadequate relief with available drug therapy. The present study targeted oxidative stress mediated nerve damage in diabetic rats using an aqueous extract of Emblica officinalis, a potent natural antioxidant. Diabetic rats exhibited significantly decreased tail-flick latency in the tail-immersion test (thermal hyperalgesia) and decreased paw withdrawal threshold in both Randall-Selitto (mechanical hyperalgesia) and von-Frey hair test (mechanical allodynia). A decrease in the nociceptive threshold was accompanied by significantly increased oxidative stress, nitrite levels and cytokines (TNF-α, IL-1β and TGF-β1) both in the serum and sciatic nerve of diabetic rats. Treatment with the Emblica officinalis aqueous extract (250, 500 and 1000 mg/kg/day) significantly attenuated all the behavioral, biochemical and molecular alterations in a dose-dependent manner. The major finding of the study is that insulin alone corrected the hyperglycemia and partially reversed the pain response in diabetic rats. However, combination with Emblica officinalis extract not only attenuated the diabetic condition but also reversed neuropathic pain through modulation of oxidative-nitrosative stress in diabetic rats.

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  • Authors+Show Affiliations

    ,

    University Institute of Pharmaceutical Sciences, UGC Center of Advanced Study, Panjab University, Chandigarh, India.

    ,

    Source

    Phytotherapy research : PTR 25:10 2011 Oct pg 1527-36

    MeSH

    Analgesics
    Animals
    Anti-Inflammatory Agents
    Antioxidants
    Behavior, Animal
    Cytokines
    Diabetes Mellitus, Experimental
    Diabetic Neuropathies
    Dose-Response Relationship, Drug
    Hyperalgesia
    Inflammation
    Inflammation Mediators
    Male
    Neuralgia
    Nitrites
    Nitrosation
    Oxidative Stress
    Pain Measurement
    Pain Threshold
    Phyllanthus emblica
    Phytotherapy
    Plant Extracts
    Rats
    Rats, Wistar
    Sciatic Nerve

    Pub Type(s)

    Journal Article
    Research Support, Non-U.S. Gov't

    Language

    eng

    PubMed ID

    21394805

    Citation

    Tiwari, Vinod, et al. "Emblica Officinalis Corrects Functional, Biochemical and Molecular Deficits in Experimental Diabetic Neuropathy By Targeting the Oxido-nitrosative Stress Mediated Inflammatory Cascade." Phytotherapy Research : PTR, vol. 25, no. 10, 2011, pp. 1527-36.
    Tiwari V, Kuhad A, Chopra K. Emblica officinalis corrects functional, biochemical and molecular deficits in experimental diabetic neuropathy by targeting the oxido-nitrosative stress mediated inflammatory cascade. Phytother Res. 2011;25(10):1527-36.
    Tiwari, V., Kuhad, A., & Chopra, K. (2011). Emblica officinalis corrects functional, biochemical and molecular deficits in experimental diabetic neuropathy by targeting the oxido-nitrosative stress mediated inflammatory cascade. Phytotherapy Research : PTR, 25(10), pp. 1527-36. doi:10.1002/ptr.3440.
    Tiwari V, Kuhad A, Chopra K. Emblica Officinalis Corrects Functional, Biochemical and Molecular Deficits in Experimental Diabetic Neuropathy By Targeting the Oxido-nitrosative Stress Mediated Inflammatory Cascade. Phytother Res. 2011;25(10):1527-36. PubMed PMID: 21394805.
    * Article titles in AMA citation format should be in sentence-case
    TY - JOUR T1 - Emblica officinalis corrects functional, biochemical and molecular deficits in experimental diabetic neuropathy by targeting the oxido-nitrosative stress mediated inflammatory cascade. AU - Tiwari,Vinod, AU - Kuhad,Anurag, AU - Chopra,Kanwaljit, Y1 - 2011/03/11/ PY - 2010/10/23/received PY - 2011/01/11/revised PY - 2011/01/19/accepted PY - 2011/3/12/entrez PY - 2011/3/12/pubmed PY - 2012/3/28/medline SP - 1527 EP - 36 JF - Phytotherapy research : PTR JO - Phytother Res VL - 25 IS - 10 N2 - Diabetic neuropathy is one of the most common microvascular complications of diabetes mellitus which affects more than 50% of diabetic patients. Diabetic neuropathic pain is amongst the most difficult types of pain to treat mainly due to the lack of understanding of its etiology and inadequate relief with available drug therapy. The present study targeted oxidative stress mediated nerve damage in diabetic rats using an aqueous extract of Emblica officinalis, a potent natural antioxidant. Diabetic rats exhibited significantly decreased tail-flick latency in the tail-immersion test (thermal hyperalgesia) and decreased paw withdrawal threshold in both Randall-Selitto (mechanical hyperalgesia) and von-Frey hair test (mechanical allodynia). A decrease in the nociceptive threshold was accompanied by significantly increased oxidative stress, nitrite levels and cytokines (TNF-α, IL-1β and TGF-β1) both in the serum and sciatic nerve of diabetic rats. Treatment with the Emblica officinalis aqueous extract (250, 500 and 1000 mg/kg/day) significantly attenuated all the behavioral, biochemical and molecular alterations in a dose-dependent manner. The major finding of the study is that insulin alone corrected the hyperglycemia and partially reversed the pain response in diabetic rats. However, combination with Emblica officinalis extract not only attenuated the diabetic condition but also reversed neuropathic pain through modulation of oxidative-nitrosative stress in diabetic rats. SN - 1099-1573 UR - https://www.unboundmedicine.com/medline/citation/21394805/Emblica_officinalis_corrects_functional_biochemical_and_molecular_deficits_in_experimental_diabetic_neuropathy_by_targeting_the_oxido_nitrosative_stress_mediated_inflammatory_cascade_ L2 - https://doi.org/10.1002/ptr.3440 DB - PRIME DP - Unbound Medicine ER -