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      Antinociceptive effects of saccharose and aqueous extract of Cordyline dracaenoides kunth (uvarana) in experimental models after induction of hyperalgesia using capsaicin

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          Abstract

          OBJECTIVE: There is evidence that sweet substances such as saccharose can enhance the analgesic properties of endogenous opioids, leading to pain relief; it is also known that Cordyline dracaenoides Kunt, commonly known as uvarana, is used in folk medicine as an anti-inflammatory and analgesic agent. The aim of the present study was to compare the antinociceptive effects of uvarana aqueous extracts vs. saccharose in rats. METHOD: Twenty-four Wistar rats were used, divided into two groups of twelve, namely a uvarana and a saccharose group. Capsaicin was used to induce hyperalgesia and the nociceptive threshold was assessed every five minutes for a total of 50 minutes Baseline values were obtained and this was followed by administration of uvarana or saccharose at threedifferent concentrations (100, 250 and 300 g/L) The nociceptive threshold was assessed using the tail flick test. RESULT: In comparison to baseline values, uvarana and saccharose provoked significant and comparable antinociceptive effects at concentrations of 250 g/L and 300 g/L, respectively. CONCLUSION: Both substances caused similar antinociceptive effects in comparison to baseline values.

          Translated abstract

          RESUMO: OBJETIVO: Há evidância de que substâncias doces, tais como a sacarose podem acentuar as propriedades analgésicas dos opióides endógenos, com alívio da dor; sabe-se também Cordyline dracaenoides Kunth, vulgarmente conhecida como uvarana, é utilizada na medicina popular como anti-inflamatório e agente analgésico. O objetivo do presente estudo foi comparar os efeitos antinociceptivos de extratos aquosos da uvarana com a sacarose em ratos. MÉTODO: Foram utilizados vinte e quatro ratos Wistar, divididos em dois grupos de doze, um tratado com uvarana e outro com sacarose. A capsaicina foi usada para a induçãoo da hiperalgesia e o limiar nociceptivo foi avaliado a cada cinco minutos durante um total de 50 minutos. Valores basais foram obtidos e em seguida foram administradas oralmente extrato de uvarana ou sacarose em três diferentes concentrações (100, 250 e 300 g/L). O limiar nociceptivo foi avaliada através do teste de retirada da cauda (tail flick test). RESULTADO: Em comparação com os valores basais, auvarana e a sacarose provocaram efeitos antinociceptivos significativos e comparáveis em concentrações de 250 e 300 g/L, respectivamente. CONCLUSÃO: Ambas as substâncias causaram efeitos antinociceptivos semelhantes em relação aos valores basais.

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          Most cited references27

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          Activation of hypothalamic β-endorphin pools by reward induced by highly palatable food

          J Dum (1983)
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            Immunoreactive beta-endorphin increases after an aspartame chocolate drink in healthy human subjects

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              Morphine analgesia in tail-flick and formalin pain tests is mediated by different neural systems.

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                medical
                MedicalExpress
                MedicalExpress (São Paulo, online)
                Mavera Edições Técnicas e Científicas Ltda
                2358-0429
                April 2014
                : 1
                : 2
                : 91-94
                Affiliations
                [1 ] Midwestern State University Brazil
                Article
                S2358-04292014000200091
                10.5935/MedicalExpress.2014.02.07
                31a88979-194d-44bc-a262-9f236d5c85db

                This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

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                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=2358-0429&lng=en
                Categories
                HEALTH CARE SCIENCES & SERVICES

                Health & Social care
                analgesia,saccharose,uvarana
                Health & Social care
                analgesia, saccharose, uvarana

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