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2.
Nat Prod Res ; 35(12): 1985-1990, 2021 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-31397172

RESUMEN

The chromatographic reinvestigation the methanol extract of Tetraena aegyptia led to the separation of a new flavonoid glycoside, isorhamnetin-3-O-[2```,3```-O-isopropylidene-α-L-rhamnopyranosyl]-(1```→6``)-O-ß-D-glucopyranoside (1), together with two known flavonoids, isorhamnetin (2) and isorhamnetin-3-O-glucoside (3), isolated for the first time from the plant. The new compound was evaluated for the anti-inflammatory activity by using LPS-induce RAW 264.7 cells model. Compound 1 showed significant inhibitory effect on NO release. ELISA assay showed a pronounced effect of 1 on the secretion of cytokines IL-6 and TNF-α, in a dose-dependent manner. Consistent results were obtained by qRT-PCR which revealed that compound 1 markedly reduced the mRNA expression of IL-6 and TNF-α. Together these data, we demonstrated the anti-inflammatory activity of compound 1.


Asunto(s)
Antiinflamatorios no Esteroideos/química , Antiinflamatorios no Esteroideos/farmacología , Flavonoides/química , Flavonoides/farmacología , Zygophyllaceae/química , Animales , Antiinflamatorios no Esteroideos/administración & dosificación , Relación Dosis-Respuesta a Droga , Evaluación Preclínica de Medicamentos , Flavonoles/aislamiento & purificación , Flavonoles/farmacología , Interleucina-6/genética , Interleucina-6/metabolismo , Lipopolisacáridos/toxicidad , Ratones , Estructura Molecular , Óxido Nítrico/metabolismo , Quercetina/análogos & derivados , Quercetina/aislamiento & purificación , Quercetina/farmacología , Células RAW 264.7 , Factor de Necrosis Tumoral alfa
3.
Front Pharmacol ; 11: 01261, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-33123002

RESUMEN

The herb Bolbostemma paniculatum (Maxim) Franquet (Cucurbitaceae family), also known as Tu-Bei-Mu (TBM) in Chinese, has shown curative effects to treat several types of cancer as an adjunctive therapy. Thereby we intend to find its effect on the human hepatocellular carcinoma (HCC) and to understand the pharmacological mechanism behind it. In this study, an integrative serum pharmacology-based approach linking serum pharmacology and bioinformatics prediction was employed. Firstly, we used the serum taken introgastrically from the rats dministered by TBM aqueous bulb extract to culture the HCC cell line BEL-7404 and detect its anti-tumor effects. Secondly, the TBM putative targets were predicted using the ETCM database and known therapeutic targets of NPC were collected from the OMIM database. Then, a TBM-HCC putative targets network was constructed using the DAVID and STRING databases. Thirdly, key gene targets were obtained based on topological analysis and pathway enrichment analysis. The expression of 4 representative key targets were validated by Western blotting. As a result, 36 TBM targets and 26 known therapeutic targets of HCC were identified. These key targets were found to be frequently involved in 13 KEGG pathways and 4 biological processes. The expression of four representative key targets: TP53, CASP3, BCL2 and BAX further supports the suppression of TBM on HCC. In general, our study shows the curative effects of TBM against HCC. By using this integrative approach, we may find novel potential therapeutic targets to suppress HCC using TBM as an adjunctive therapy. And it could also help us understand the mechanism of HCC treatments in response to TBM.

4.
Complement Ther Med ; 50: 102395, 2020 May.
Artículo en Inglés | MEDLINE | ID: mdl-32444054

RESUMEN

BACKGROUND & OBJECTIVE: Effects of walnut intake on anthropometric measurements have been inconsistent among clinical studies. Thus, we conducted a meta-analysis of randomized clinical trials (RCTs) to evaluate and quantify the effects of walnut intake on anthropometric characteristics. METHODS: We carried out a systematic search of all available RCTs up to June 2019 in the following electronic databases: PubMed, Scopus, Web of Science and Google Scholar. Pooled weight mean difference (WMD) of the included studies was estimated using random-effects model. RESULTS: A total of 27 articles were included in this meta-analysis, with walnuts dosage ranging from 15 to 108 g/d for 2 wk to 2 y. Overall, interventions with walnut intake did not alter waist circumference (WC) (WMD: -0.193 cm, 95 % CI: -1.03, 0.64, p = 0.651), body weight (BW) (0.083 kg, 95 % CI: -0.032, 0.198, p = 0.159), body mass index (BMI) (WMD: -0.40 kg/m,295 % CI: -0.244, 0.164, p = 0.703), and fat mass (FM) (WMD: 0.28 %, 95 % CI: -0.49, 1.06, p = 0.476). Following dose-response evaluation, reduced BW (Coef.= -1.62, p = 0.001), BMI (Coef.= -1.24, p = 0.041) and WC (Coef.= -5.39, p = 0.038) were significantly observed through walnut intake up to 35 g/day. However, the number of studies can be limited as to the individual analysis of the measures through the dose-response fashion. CONCLUSIONS: Overall, results from this meta-analysis suggest that interventions with walnut intake does not alter BW, BMI, FM, and WC. To date, there is no discernible evidence to support walnut intake for improving anthropometric indicators of weight loss.


Asunto(s)
Antropometría , Suplementos Dietéticos , Juglans , Nueces , Peso Corporal , Relación Dosis-Respuesta a Droga , Humanos , Obesidad/dietoterapia , Ensayos Clínicos Controlados Aleatorios como Asunto , Circunferencia de la Cintura
5.
Food Chem ; 138(2-3): 1008-14, 2013 Jun 01.
Artículo en Inglés | MEDLINE | ID: mdl-23411207

RESUMEN

Corchorus olitorius L. is grown in Taiwan during summer. Tender leaves are crushed and washed by running water before eating. Five fractions including crude phenolic extracts (using 80 per cent aqueous acetone) of whole plant, leaf, stem, washed leaf (WL) and dried water washing material (WW) were used in this study. Linoleic acid autoxidation inhibitions on all fractions were higher than that on α-tocopherol. Except for WL and WW, other fractions also showed DPPH radical scavenging efficiency. The effect of all fractions on the regulation of inflammatory responses in lipopolysaccharide (LPS)-stimulated J774A.1 macrophage cells was investigated. All fractions diminished LPS-induced protein expression of inducible nitric oxide synthase (iNOS) and cyclooxygenase 2 (COX-2). Nitric oxide (NO) and prostaglandin E2 (PGE(2)), downstream products, were also suppressed in dose-dependent manners, except for WL and WW. Oxidative modification and loss of leaf phenolics after kneading and washing greatly affected DPPH radical scavenging and inflammatory responses.


Asunto(s)
Antiinflamatorios/farmacología , Corchorus/química , Fenoles/farmacología , Extractos Vegetales/farmacología , Animales , Antiinflamatorios/química , Antiinflamatorios/aislamiento & purificación , Antioxidantes/química , Antioxidantes/aislamiento & purificación , Antioxidantes/farmacología , Macrófagos/efectos de los fármacos , Macrófagos/inmunología , Ratones , Fenoles/química , Fenoles/aislamiento & purificación , Extractos Vegetales/química , Extractos Vegetales/aislamiento & purificación , Hojas de la Planta/química
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