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Anti-inflammatory and antinociceptive activities of the leaf methanol extract of Miconia minutiflora (Bonpl.) DC. and characterization of compounds by UPLC-DAD-QTOF-MS/MS

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Abstract

Some species of the genus Miconia are used in Brazilian folk medicine as analgesic and anti-inflammatory; however, several species of this genus are still poorly studied. Therefore, the aims of this study were to investigate the phytochemistry characterization by UPLC-DAD-QTOF-MS/MS, acute toxicity, anti-inflammatory and antinociceptive properties of Miconia minutiflora (Bonpl.) DC. The methanol extract of M. minutiflora (Mm-MeOH) was subjected to ultra-high-performance liquid chromatography (UPLC-DAD-QTOF-MS/MS) for the identification of the main phytocompounds. The anti-inflammatory properties of the extracts were studied using several inflammation models induced by carrageenan and acetic acid-induced vascular permeability. Antinociceptive effects of Mm-MeOH were assessed in nociception induced by intraperitoneal acetic acid or subplantar formalin injection. The role of α-adrenergic, cholinergic, and opioid receptors in modulating the extract’s antinociceptive activity was determined. Analyses by UPLC-DAD-QTOF-MS/MS revealed the presence of ellagic acid, gallotannin, and terpenes in the methanol extract. Mm-MeOH (100 mg/kg) reduced carrageenan-induced paw edema and vascular permeability and inhibited leukocyte migration toward the air pouch and pleural cavity. Furthermore, Mm-MeOH decreased tumor necrosis factor-α (TNF-α) and interleukin-1β (IL-1β) levels. Administration of Mm-MeOH reduced the number of writhes by 58.9% and increased the pain threshold in the formalin test. The anti-inflammatory action mechanism of Mm-MeOH is associated with inhibition of proinflammatory cytokines TNF-α and IL-1β, whereas the antinociceptive actions involve peripheral and central mechanisms with participation of α2-adrenergic receptors. These effects may be attributed to the presence of polyphenolics in the extract.

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Funding

This work was financially supported by grants from Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPQ), Fundação de Amparo à Ciência e Tecnologia de Pernambuco (FACEPE) (Grant no. PRONEM APQ-0741106/2014), and CAPES, Brazil.

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Contributions

ASC and TGS conceived and designed the research. ASC, FVBM, TBO, SCS, and IVAB conducted the experiments. ECOC collected and identified the plant. TCCL was responsible for extract preparations. ERG, MBSM, TMSS, and MSN contributed on analytical tools like UPLC and analyzed data. TGS and PSP wrote the manuscript. All authors read and approved the manuscript.

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Correspondence to Teresinha Gonçalves da Silva.

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The authors declare that they have no conflicts of interest.

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Gatis-Carrazzoni, A.S.S.G., Mota, F.V.B., Leite, T.C.C. et al. Anti-inflammatory and antinociceptive activities of the leaf methanol extract of Miconia minutiflora (Bonpl.) DC. and characterization of compounds by UPLC-DAD-QTOF-MS/MS. Naunyn-Schmiedeberg's Arch Pharmacol 392, 55–68 (2019). https://doi.org/10.1007/s00210-018-1561-x

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  • DOI: https://doi.org/10.1007/s00210-018-1561-x

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