In vitro anti-inflammatory components isolated from the carnivorous plant Nepenthes mirabilis (Lour.) Rafarin.
Pharm Biol
; 54(4): 588-94, 2016.
Article
en En
| MEDLINE
| ID: mdl-26186458
ABSTRACT
CONTEXT Nepenthes mirabilis (Lour.) Rafarin (Nepenthaceae) is a carnivorous plant used as a folk medicine in the treatment of jaundice, hepatitis, gastric ulcers, ureteral stones, diarrhea, diabetes, and high blood pressure. Neither the phytochemical content nor biological activities of N. mirabilis have been reported. OBJECTIVE:
The anti-inflammatory activity from the N. mirabilis methanolic extract led to the isolation of compounds (1-26). MATERIALS ANDMETHODS:
Chromatographic methods were used to isolate compounds from the methanol extract of N. mirabilis branches and leaves. The anti-inflammatory activity of these isolated compounds was investigated in lipopolysaccharide (LPS)-stimulated bone marrow-derived dendritic cells (BMDCs) using ELISA. Primary BMDCs were used to examine the production of pro-inflammatory cytokines (IL-12 p40, IL-6, and TNF-α, at concentrations of 0.1, 0.2, and 1.0 µM) as compared with a positive control, SB203580 (1.0 µM). MTT assays showed that isolated compounds (1-26) did not exhibit significant cytotoxicity at concentrations up to 20.0 µM.RESULTS:
Compound 9 showed potent inhibition of IL-12 p40, IL-6, and TNF-α production (IC50 = 0.17 ± 0.02, 0.46 ± 0.01, and 8.28 ± 0.21 µM, respectively). Compound 4 showed potent inhibition of IL-12 p40 and IL-6 production (IC50 = 1.17 ± 0.01 and 2.15 ± 0.04 µM). In addition, IL-12 p40 inhibition by naphthalene derivatives (1-7, 9, and 10), phenolic compounds (11-15), lupeone (18), and flavonoids (22, 25, and 26) was more potent than with the positive control. The isolated compounds exhibited little and/or no inhibitory effects on TNF-α production in LPS-stimulated BMDCs. DISCUSSION ANDCONCLUSION:
Taken together, these data suggest that the isolated components have significant inhibitory effects on pro-inflammatory cytokine production and warrant further study concerning their potential medicinal use.Palabras clave
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Células de la Médula Ósea
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Extractos Vegetales
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Mediadores de Inflamación
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Mirabilis
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Antiinflamatorios
Límite:
Humans
Idioma:
En
Año:
2016
Tipo del documento:
Article