Journal
ARCHIVES OF MEDICAL RESEARCH
Volume 52, Issue 6, Pages 611-619Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.arcmed.2021.03.007
Keywords
Rutin; Flavonoid; Synergism; Isobologram
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Funding
- Consejo Nacional de Ciencia y Tecnologia (CONACyT) [CB-2015-01-257872]
- Universidad de Guanajuato [CIIC 31/2018, DAIP CIIC 67/2019]
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The study demonstrates that rutin exhibits synergistic effects with paracetamol and NSAIDs both in vitro and in vivo, leading to a reduction in nitric oxide production and writhing numbers.
Aim/Background. The combination of drugs with different mechanisms of action could be more effective due to an enhanced synergistic activity. The pharmacological interactions between rutin and paracetamol, and rutin and non-steroidal anti-inflammatory drugs (NSAIDs), such as naproxen, ketorolac, and diclofenac were investigated using in vitro and in vivo assays. Methods. Individual and drug combination response curves of rutin-NSAIDs, and rutinparacetamol (each at 0.001-0.1 mmol for in vitro studies and ranging from 1.25-100 mg/kg p.o. for in vivo studies) were evaluated in RAW 264.7 macrophages [inhibition of nitric oxide (NO) using the Griess reagent] and Balb/c mice (acetic acid-induced writhing test). An isobolographic analysis was used to assess the type of interaction between rutin and NSAIDs and rutin-paracetamol in a proportion of 1:1. Results. Rutin alone and in combination with paracetamol and NSAIDs decreased NO production and the number of writhings in a concentration/dose-dependent manner. The isobolograms showed that all in vitro combinations of rutin-NSAIDs and rutinparacetamol exerted synergistic effects. The combination rutin-diclofenac showed an interaction index of 0.17. In the in vivo assay, the combinations of rutin-diclofenac (interaction index = 0.195) and rutin-ketorolac (interaction index = 0.408) displayed synergistic effects, and the combination rutin-paracetamol exhibited additive effects. Conclusion. Rutin produces synergistic effects with paracetamol and NSAIDs in in vitro and in vivo assays. (C) 2021 Instituto Mexicano del Seguro Social (IMSS). Published by Elsevier Inc. All rights reserved.
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