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Pharmaceutical Biology 2017-Dec

Potential anti-inflammatory, antioxidant and antimicrobial activities of Sambucus australis.

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Jhéssica Benevides Bahiense
Franciane Martins Marques
Mariana Moreira Figueira
Thais Souza Vargas
Tamara P Kondratyuk
Denise Coutinho Endringer
Rodrigo Scherer
Marcio Fronza

Ключевые слова

абстрактный

BACKGROUND

Sambucus australis Cham. & Schltdl. (Adoxaceae) is used in Brazilian folk medicine to treat inflammatory disorders.

OBJECTIVE

To evaluate the in vitro anti-inflammatory, antioxidant and antimicrobial properties of S. australis.

METHODS

The anti-inflammatory activity of ethanol extracts of the leaf and bark of S. australis (1-100 μg/mL) were studied in lipopolysaccharide/interferon γ stimulated murine macrophages RAW 264.7 cells (24 h incubation) by investigating the release of nitric oxide (NO) and tumour necrosis factor-alpha (TNF-α) and in the TNF-α-induced nuclear factor kappa (NF-κB) assay. Minimum inhibitory concentration (MIC) was determined by the microdilution test (24 h incubation). Antioxidant activity was determined by 2,2-diphenyl-1-picrylhydrazyl (DPPH), ferric reducing antioxidant power (FRAP) and the NO scavenging assays. Chemical composition was assessed by LC-MS/MS.

RESULTS

Antioxidant activities in the DPPH (IC50 43.5 and 66.2 μg/mL), FRAP (IC50 312.6 and 568.3 μg/mL) and NO radical scavenging assays (IC50 285.0 and 972.6 μg/mL) were observed in the leaf and bark ethanol extracts, respectively. Solely the leaf extract showed significant inhibition of NO and TNF-α production in RAW264.7 cells at concentrations of 2 and 100 μg/mL, respectively, and suppression of TNF-α inhibition of NF-κB by 12.8 and 20.4% at concentrations of 50 and 100 μg/mL, respectively. The extract also exhibited antibacterial activity against Salmonella typhimurium (MIC 250 μg/mL) and Klebsiella pneumoniae (MIC 250 μg/mL). LC-MS/MS revealed the presence of chlorogenic acid and rutin as major compounds.

CONCLUSIONS

The results indicate that the ethanol leaf extract of S. australis exhibit prominent anti-inflammatory effects.

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