Your browser doesn't support javascript.
Mostrar: 20 | 50 | 100
Resultados 1 - 3 de 3
Filtrar
Mais filtros










Base de dados
Intervalo de ano de publicação
1.
J Ethnopharmacol ; 251: 112554, 2020 Jan 07.
Artigo em Inglês | MEDLINE | ID: mdl-31923541

RESUMO

ETHNOPHARMACOLOGICAL RELEVANCE: Ulcerative colitis (UC) is tightly associated with inflammation response and oxidative stress. As a folk medicine applied in treatment of diarrhea, Bruguiera gymnorrhiza also possesses anti-inflammatory and anti-oxidative activities, which indicated that B. gymnorrhiza may exert anti-colitis effect. AIM OF THE STUDY: To investigate effect and mechanism of B. gymnorrhiza on experimental UC. MATERIALS AND METHODS: Aqueous extract of B. gymnorrhiza leaves (ABL) was used for investigation in the present study. Murine UC was established through access to 3% dextran sulfate sodium (DSS) for 7 days. Meanwhile, mice accepted treatment with ABL (25, 50, 100 mg/kg) or sulfasalazine (200 mg/kg) once daily. On the last day, disease activity index (DAI) including body weight loss, fecal character and degree of bloody diarrhea was evaluated, colon segments were obtained for length measurement and further analysis and feces were collected for intestinal microbiota analysis. RESULTS: ABL ameliorated DAI scores, colon length shortening and histopathological damage in DSS-induced colitis mice obviously. SOD activity, levels of MDA and GSH altered by colitis were restored remarkably after ABL treatment. ABL inhibited increases in levels of colonic COX-2, iNOS, TNF-α, IL-6, IL-1ß, IL-4, IL-10 and IL-11 in colitis mice. Moreover, ABL prominently suppressed NF-κB p65 and IκB phosphorylation and down-regulated mRNA levels of COX-2, iNOS, TNF-α, IL-6 and IL-1ß elevated by colitis. As shown in microbiota analysis, ABL modulated composition of intestinal microbiota of colitis mice. CONCLUSION: ABL exhibited protective effect against DSS-induced ulcerative colitis through suppressing NF-κB activation and modulating intestinal microbiota.

2.
Food Chem Toxicol ; 123: 349-362, 2019 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-30423402

RESUMO

Acetaminophen (APAP) overdose-induced hepatotoxicity is tightly associated with oxidative stress. Tetrahydrocurcumin (THC) and octahydrocurcumin (OHC), the primary and final hydrogenated metabolites of curcumin (CUR), possess stronger antioxidant activity in vitro. The present study was performed to investigate the potential and mechanism of OHC and THC against APAP-induced hepatotoxicity in parallel to CUR. Our results showed that OHC and THC dose-dependently enhanced liver function (ALT and AST levels) and alleviated histopathological deterioration. Besides, OHC and THC significantly restored the hepatic antioxidant status by miring level of MDA and ROS, and elevated levels of GSH, SOD, CAT and T-AOC. In addition, OHC and THC markedly suppressed the activity and expressions of CYP2E1, and bound to the active sites of CYP2E1. Moreover, OHC and THC activated the Keap1-Nrf2 pathway and enormously enhanced the translational activation of Nrf2-targeted gene (GCLC, GCLM, NQO1 and HO-1) against oxidative stress, via inhibiting the expression of Keap1 and blocking the interaction between Keap1 and Nrf2. Particularly, OHC and THC exerted superior hepato-protective and antioxidant activities to CUR. In conclusion, OHC and THC possess favorable hepato-protective effect through restoring antioxidant status, inhibiting CYP2E1 and activating Keap1-Nrf2 pathway, which might represent promising antioxidants for the treatment of APAP-induced hepatotoxicity.


Assuntos
Acetaminofen/efeitos adversos , Doença Hepática Induzida por Substâncias e Drogas/prevenção & controle , Curcumina/administração & dosagem , Citocromo P-450 CYP2E1/metabolismo , Proteína 1 Associada a ECH Semelhante a Kelch/metabolismo , Fator 2 Relacionado a NF-E2/metabolismo , Substâncias Protetoras/administração & dosagem , Animais , Doença Hepática Induzida por Substâncias e Drogas/etiologia , Doença Hepática Induzida por Substâncias e Drogas/genética , Doença Hepática Induzida por Substâncias e Drogas/metabolismo , Curcumina/análogos & derivados , Curcumina/química , Curcumina/metabolismo , Citocromo P-450 CYP2E1/genética , Humanos , Hidrogenação , Proteína 1 Associada a ECH Semelhante a Kelch/genética , Fígado/efeitos dos fármacos , Fígado/metabolismo , Masculino , Camundongos , Fator 2 Relacionado a NF-E2/genética , Estresse Oxidativo/efeitos dos fármacos , Substâncias Protetoras/química , Substâncias Protetoras/metabolismo , Transdução de Sinais/efeitos dos fármacos
3.
Hu Li Za Zhi ; 60(2): 71-8, 2013 Apr.
Artigo em Chinês | MEDLINE | ID: mdl-23575617

RESUMO

BACKGROUND & PROBLEMS: Children in the PICU who are treated for illnesses using intubation are often unable to express their needs effectively. This project first used a self-designed survey to record the researcher's observations and interview data. Results indicated that even with clinical staffs trying their best to understand PICU patient needs, 50% of the patients had unmet demands due to inadequate communication. This unmet demand was a source of negative patient behavior. PURPOSE: This project developed an appropriate communication system to improve communication efficacy between children and clinical staffs in order to meet patient demands and improve PICU patient outcomes. RESOLUTION: Various types of auxiliary school-aged-children-appropriate communication tools such as picture cards, hand-held communication boards, and magnetic spelling board were used. Using these communication tools together with education and training greatly improved communication efficacy and patient needs provision. RESULTS: Percentage of patient needs met increased from 50% to 98% and the average time clinical staffs needed to spend to understand a patient's needs decreased from 15 to 4 minutes per instance. CONCLUSIONS: This project improved relationships and interactions between clinical nurses and school-aged children. The developed auxiliary communication tools may be introduced in the PICU based on the results of this project as an effective approach to improving patient-staff communication and reducing patient-perceived hospitalization stress.


Assuntos
Comunicação , Unidades de Terapia Intensiva Pediátrica , Relações Enfermeiro-Paciente , Adulto , Criança , Humanos
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA