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1.
Chem Biol Drug Des ; 103(1): e14428, 2024 01.
Artigo em Inglês | MEDLINE | ID: mdl-38230768

RESUMO

Peanut skin (PS) contains various flavonoids and phenols that have antitumor and antioxidant effects. However, no research has been conducted on PS and hepatocellular carcinoma (HCC). Therefore, this study sought to explore the potential mechanism of PS in treating HCC. PS was searched for in the Traditional Chinese Medicine Systems Pharmacology Database and Analysis Platform and SYMMAP databases. HCC targets were searched for in five major databases. Protein-protein interaction network, Gene Ontology, and Kyoto Encyclopedia of Genes and Genomes analyses were performed. Molecular docking and molecular dynamics simulation were used for verification. Furthermore, in vitro experiments were used to verify the regulation of PS on human HCC (HepG2) cells. Ten ingredients and 95 common targets were identified for PS and HCC, respectively. The key targets of ingredients mainly relate to pathways such as hepatitis B, lipid and atherosclerosis, advanced glycation end products (AGEs)-AGE receptors (RAGEs) signaling pathway in diabetic complications, interleukin-17 (IL-17) signaling pathway, mitogen activated kinase-like protein (MAPK) signaling pathway, the PI3K-Akt signaling pathway. In addition, the molecular docking and molecular dynamics simulation analysis indicated the ingredients had strong binding ability with the targets. Moreover, in vitro experiments confirmed that luteolin can promote the apoptosis of HepG2 cells by controlling the expression of phosphorylated protein-tyrosine kinase (p-AKT). This study provides preliminary evidence that PS produces a marked effect in regulating multiple signaling pathways in HCC through multiple ingredients acting on multiple core genes, including AKT serine/threonine kinase 1 (AKT1), MYC, caspase 3 (CASP3), estrogen receptor 1 (ESR1), epidermal growth factor receptor (EGFR), jun proto-oncogene(JUN), and provides the basis for follow-up research to verify the mechanism of action of PS in treating HCC.


Assuntos
Carcinoma Hepatocelular , Medicamentos de Ervas Chinesas , Neoplasias Hepáticas , Humanos , Arachis , Carcinoma Hepatocelular/tratamento farmacológico , Farmacologia em Rede , Simulação de Acoplamento Molecular , Fosfatidilinositol 3-Quinases , Proteínas Proto-Oncogênicas c-akt , Neoplasias Hepáticas/tratamento farmacológico
2.
Regen Med ; 17(4): 219-232, 2022 04.
Artigo em Inglês | MEDLINE | ID: mdl-35249360

RESUMO

Background: Skin regeneration from an injury without a scar is still a challenge. Methods: A murine model of a skin wound was treated with a combination of extract of astragalus and exosomes of mesenchymal stem cells (MSCs). CD11b+ and CD45 macrophages were detected and levels of cytokines were tested. Results: The expression of growth factors VEGF, FGF2 and EGF was elevated after treatment administered to MSCs. The administration of ethanolic extract of astragalus decreased the expression of TNF-α, IL-1ß and IL-6 and simultaneously increased the levels of IL-10. The combination sped up the process of wound healing. A sustained-release gel with both ingredients was developed to enhance restoration from granulation. Conclusion: The extract of astragalus promotes the efficacy of MSC-derived exosomes in skin repair.


Recovery from and regeneration of skin wounds are essential to maintaining epidermal function. Improving restoration and reducing scar tissue effectively need to be explored. Here, the authors investigated the potential role of extracts from the combination of an herbal plant (astragalus) and mesenchymal stem cells in wound healing. The administration of ethanolic extract of astragalus decreased the expression of inflammatory factors, increased the anti-inflammatory factor IL-10 and inhibited the proliferation of fibroblasts. The authors found that the combination treatment reduced the recovery time, with a lighter scar. Finally, the authors developed a slow-release gel with the mixture to prolong the effect and promote wound repair. Ethanolic extract of astragalus could enhance the properties of mesenchymal stem cells by effectively increasing recovery speed and improving prognosis.


Assuntos
Exossomos , Células-Tronco Mesenquimais , Animais , Humanos , Células-Tronco Mesenquimais/metabolismo , Camundongos , Comunicação Parácrina , Extratos Vegetais/metabolismo , Pele , Cicatrização
3.
Oxid Med Cell Longev ; 2021: 1470829, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34900083

RESUMO

BACKGROUND: Peripheral arterial disease (PAD) is a typical disease of atherosclerosis, most commonly influencing the lower extremities. In patients with PAD, revascularization remains a preferred treatment strategy. Buyang Huanwu decoction (BHD) is a popular Chinese herbal prescription which has showed effects of cardiovascular protection through conducting antioxidant, antiapoptotic, and anti-inflammatory effects. Here, we intend to study the effect of BHD on promoting revascularization via the Akt/GSK3ß/NRF2 pathway in diabetic hindlimb ischemia (HLI) model of mice. MATERIALS AND METHODS: All db/db mice (n = 60) were randomly divided into 6 groups by table of random number. (1) Sham group (N = 10): 7-0 suture thread passed through the underneath of the femoral artery and vein without occlusion. The remaining 5 groups were treated differently on the basis of the HLI (the femoral artery and vein from the inguinal ligament to the knee joint were transected and the vascular stump was ligated with 7-0 silk sutures) model: (2) HLI+NS group (N = 15): 0.2 ml NS was gavaged daily for 3 days before modeling and 14 days after occlusion; (3) HLI+BHD group (N = 15): 0.2 ml BHD (20 g/kg/day) was gavaged daily for 3 days before modeling and 14 days after occlusion; (4) HLI+BHD+sh-NC group (N = 8): local injection of adenovirus vector carrying the nonsense shRNA (Ad-GFP) in the hindlimbs of mice before treatment; (5) HLI+BHD+sh-NRF2 group (N = 8): knockdown of NRF2 in the hindlimbs of mice by local intramuscular injection of adenovirus vector carrying NRF2 shRNA (Ad-NRF2-shRNA) before treatment; and (6) HLI+BHD+LY294002 group (N = 4): intravenous injection of LY294002 (1.5 mg/kg) once a day for 14 days on the basis of the HLI+BHD group. Laser Doppler examination, vascular cast, and immunofluorescence staining were applied to detect the revascularization of lower limbs in mice. Western blot analysis was used to detect the expression of vascular endothelial growth factor (VEGF), interleukin-1beta (IL-1ß), interleukin-6 (IL-6), tumor necrosis factor- (TNF-) α, heme oxygenase-1 (HO-1), NAD(P)H dehydrogenase quinone-1 (NQO-1), catalase (CAT), glyceraldehyde-3-phosphate dehydrogenase (GAPDH), phosphorylated protein kinase B (p-AKT), and phosphorylated glycogen synthase kinase-3 beta (p-GSK3ß). HE staining was used to assess the level of muscle tissue damage and inflammation in the lower extremities. Local multipoint injection of Ad-NRF2-shRNA was used to knock down NRF2, and qPCR was applied to detect the mRNA level of NRF2. The blood glucose, triglyceride, cholesterol, MDA, and SOD levels of mice were tested using corresponding kits. The SPSS 20.0 software and GraphPad Prism 6.05 were used to do all statistics. Values of P < 0.05 were considered as statistically significant. Results and Conclusions. BHD could enhance the revascularization of lower limbs in HLI mice, while BHD has no effect on blood glucose and lipid level in db/db mice (P > 0.05). BHD could elevate the protein expression of VEGF, HO-1, NQO-1, and CAT (P < 0.05) and decrease the expression of IL-1ß, IL-6, and TNF-α (P < 0.05) in HLI mice. Meanwhile, BHD could activate NRF2 and promote the phosphorylation of AKT/GSK3ß during revascularization (P < 0.05). In contrast, knockdown of NRF2 impaired the protective effects of BHD on HLI (P < 0.05). LY294002 inhibited the upregulation of NRF2 activated by BHD through inhibiting the phosphorylation of the AKT/GSK3ß pathway (P < 0.05). The present study demonstrated that BHD could promote revascularization on db/db mice with HLI through targeting antioxidation, anti-inflammation, and angiogenesis via the AKT/GSK3ß/NRF2 pathway.


Assuntos
Medicamentos de Ervas Chinesas/farmacologia , Glicogênio Sintase Quinase 3 beta/metabolismo , Fator 2 Relacionado a NF-E2/metabolismo , Proteínas Proto-Oncogênicas c-akt/metabolismo , Transdução de Sinais/efeitos dos fármacos , Animais , Anti-Inflamatórios/farmacologia , Anti-Inflamatórios/uso terapêutico , Diabetes Mellitus/patologia , Modelos Animais de Doenças , Medicamentos de Ervas Chinesas/uso terapêutico , Heme Oxigenase-1/genética , Heme Oxigenase-1/metabolismo , Membro Posterior/irrigação sanguínea , Membro Posterior/patologia , Isquemia/tratamento farmacológico , Isquemia/metabolismo , Camundongos , Camundongos Endogâmicos C57BL , Fator 2 Relacionado a NF-E2/antagonistas & inibidores , Fator 2 Relacionado a NF-E2/genética , Neovascularização Patológica , Fosforilação/efeitos dos fármacos , Proteínas Proto-Oncogênicas c-akt/antagonistas & inibidores , Interferência de RNA , RNA Interferente Pequeno/metabolismo , Regulação para Cima/efeitos dos fármacos , Fator A de Crescimento do Endotélio Vascular/genética , Fator A de Crescimento do Endotélio Vascular/metabolismo
4.
JCI Insight ; 6(7)2021 04 08.
Artigo em Inglês | MEDLINE | ID: mdl-33690226

RESUMO

Liver regeneration is critical to survival after traumatic injuries, exposure to hepatotoxins, or surgical interventions, yet the underlying signaling and metabolic pathways remain unclear. In this study, we show that hepatocyte-specific loss of the mitochondrial deacetylase SIRT3 drastically impairs regeneration and worsens mitochondrial function after partial hepatectomy. Sirtuins, including SIRT3, require NAD as a cosubstrate. We previously showed that the NAD precursor nicotinamide riboside (NR) promotes liver regeneration, but whether this involves sirtuins has not been tested. Here, we show that despite their NAD dependence and critical roles in regeneration, neither SIRT3 nor its nuclear counterpart SIRT1 is required for NR to enhance liver regeneration. NR improves mitochondrial respiration in regenerating WT or mutant livers and rapidly increases oxygen consumption and glucose output in cultured hepatocytes. Our data support a direct enhancement of mitochondrial redox metabolism as the mechanism mediating improved liver regeneration after NAD supplementation and exclude signaling via SIRT1 and SIRT3. Therefore, we provide the first evidence to our knowledge for an essential role for a mitochondrial sirtuin during liver regeneration and insight into the beneficial effects of NR.


Assuntos
Regeneração Hepática/fisiologia , Mitocôndrias Hepáticas/fisiologia , Niacinamida/análogos & derivados , Compostos de Piridínio/farmacologia , Sirtuína 3/metabolismo , Animais , Hepatócitos/efeitos dos fármacos , Hepatócitos/metabolismo , Regeneração Hepática/efeitos dos fármacos , Masculino , Camundongos Endogâmicos C57BL , Camundongos Knockout , Camundongos Transgênicos , Mitocôndrias Hepáticas/efeitos dos fármacos , Niacinamida/farmacologia , Oxirredução , Sirtuína 1/genética , Sirtuína 1/metabolismo , Sirtuína 3/genética
5.
Nat Prod Res ; 34(21): 3061-3065, 2020 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-31084212

RESUMO

Two new compounds, named ordosacid A (5) and ordosacid B (6), along with four known compounds: 3,4-dihydroxybenzaldehyde (1), p-hydroxybenzoic acid (2), p-hydroxycinnamic acid (3) and o-hydroxycinnamic acid (4), were isolated from the ethyl acetate extract of Artemisia ordosica Krasch. The structures of new compounds were elucidated on the basis of spectroscopic methods including UV, IR, ESI-MS, 1D NMR, 2D NMR, HR-ESI-MS and modified Mosher's method.


Assuntos
Artemisia/química , Produtos Biológicos/química , Artemisia/metabolismo , Produtos Biológicos/isolamento & purificação , China , Ácidos Cumáricos , Espectroscopia de Ressonância Magnética , Estrutura Molecular , Parabenos/química , Parabenos/isolamento & purificação , Extratos Vegetais/química , Propionatos/química , Propionatos/isolamento & purificação , Metabolismo Secundário , Espectrometria de Massas por Ionização por Electrospray , Espectrofotometria Ultravioleta
6.
Front Pharmacol ; 10: 844, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-31427964

RESUMO

Coronary heart disease (CHD) remains a major cause of mortality with a huge economic burden on healthcare worldwide. Here, we conducted a systematic review to investigate the efficacy and safety of Chinese herbal medicine (CHM) for CHD based on high-quality randomized controlled trials (RCTs) and summarized its possible mechanisms according to animal-based researches. 27 eligible studies were identified in eight database searches from inception to June 2018. The methodological quality was assessed using seven-item checklist recommended by Cochrane Collaboration. All the data were analyzed using Rev-Man 5.3 software. As a result, the score of study quality ranged from 4 to 7 points. Meta-analyses showed CHM can significantly reduce the incidence of myocardial infarction and percutaneous coronary intervention, and cardiovascular mortality (P < 0.05), and increase systolic function of heart, the ST-segment depression, and clinical efficacy (P < 0.05). Adverse events were reported in 11 studies, and CHMs were well tolerated in patients with CHD. In addition, CHM exerted cardioprotection for CHD, possibly altering multiple signal pathways through anti-inflammatory, anti-oxidation, anti-apoptosis, improving the circulation, and regulating energy metabolism. In conclusion, the evidence available from present study revealed that CHMs are beneficial for CHD and are generally safe.

7.
Oxid Med Cell Longev ; 2019: 4275984, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-31178960

RESUMO

BACKGROUND: Acute myocardial infarction (AMI) remains a leading cause of morbidity and mortality worldwide. The idea of therapeutic angiogenesis in ischemic myocardium is a promising strategy for MI patients. Buyang Huanwu decoction (BHD), a famous Chinese herbal prescription, exerted antioxidant, antiapoptotic, and anti-inflammatory effects, which contribute to cardio-/cerebral protection. Here, we aim to investigate the effects of BHD on angiogenesis through the caveolin-1 (Cav-1)/vascular endothelial growth factor (VEGF) pathway in MI model of mice. MATERIALS AND METHODS: C57BL/6 mice were randomly divided into 3 groups by the table of random number: (1) sham-operated group (sham, n = 15), (2) AMI group (AMI+sham, n = 20), and (3) BHD-treated group (AMI+BHD, n = 20). 2,3,5-Triphenyltetrazolium chloride solution stain was used to determine myocardial infarct size. Myocardial histopathology was tested using Masson staining and hematoxylin-eosin staining. CD31 immunofluorescence staining was used to analyze the angiogenesis in the infarction border zone. Western blot analysis, immunofluorescence staining, and/or real-time quantitative reverse transcription polymerase chain reaction was applied to test the expression of Cav-1, VEGF, vascular endothelial growth factor receptor 2 (VEGFR2), and/or phosphorylated extracellular signal-regulated kinase (p-ERK). All statistical analyses were performed using the SPSS 20.0 software and GraphPad Prism 6.05. Values of P < 0.05 were considered as statistically significant. RESULTS AND CONCLUSION: Compared with the AMI group, the BHD-treated group showed a significant improvement in the heart weight/body weight ratio, echocardiography images, cardiac function, infarct size, Mason staining of the collagen deposition area, and density of microvessel in the infarction border zone (P < 0.05). Compared with the AMI group, BHD promoted the expression of Cav-1, VEGF, VEGFR2, and p-ERK in the infarction border zone after AMI. BHD could exert cardioprotective effects on the mouse model with AMI through targeting angiogenesis via Cav-1/VEGF signaling pathway.


Assuntos
Caveolina 1/metabolismo , Medicamentos de Ervas Chinesas/uso terapêutico , Infarto do Miocárdio/tratamento farmacológico , Fator A de Crescimento do Endotélio Vascular/metabolismo , Doença Aguda , Animais , Modelos Animais de Doenças , Medicamentos de Ervas Chinesas/farmacologia , Masculino , Camundongos , Infarto do Miocárdio/patologia , Neovascularização Patológica/patologia , Transdução de Sinais
8.
J Ethnopharmacol ; 234: 8-20, 2019 Apr 24.
Artigo em Inglês | MEDLINE | ID: mdl-30658181

RESUMO

ETHNOPHARMACOLOGICAL RELEVANCE: Erxian decoction (EXD), a famous Chinese herbal prescription, consists of Rhizoma Curculiginis, Herba Epimedii, Radix Morindae Officinalis, Radix Angelicae Sinensis, Cortex Phellodendri, Rhizoma Anemarrhenae, all of which are recorded in the Chinese Pharmacopoeia. OBJECTIVE: To conduct an updated systematic and meta-analysis investigating efficacy and safety of EXD for menopausal syndrome. METHODS: An electronic search was conducted in eight databases from inception until July 2018. Randomized controlled trials with risk-of-bias score ≥ 7 according to the Cochrane Back Review Group were included for analyses. All participants with a diagnosis of menopausal syndrome met the established criteria. The treatment group was EXD monotherapy or adjunct therapy. Comparators were placebo, hormone replace therapy, hormone plus nonhormonal agents, nonhormonal agents and no treatment. The primary outcome measurements were the Kupperman index, total hot flush scores, total menopause rating scale (MRS) scores and total menopause-specific quality of life (MENQOL) scores. The secondary outcomes were total clinical effective rate, traditional Chinese medicine (TCM) syndrome scores, Hamilton depression (HAMD) scale scores, self-rating depression scale (SDS) scores, self-Rating Anxiety Scale (SAS) scores, athens insomnia scale (AIS) scores, serological indicators, blood pressure, and adverse events. RevMan 5.3 Software was used for data analyses. GRADE system was used to assess the level of evidence. RESULTS: Sixteen eligible studies with 1594 subjects were identified. Five studies showed EXD was contradictory results according to Kupperman index of menopausal syndrome compared with hormone. One study showed EXD significantly improved total hot flush scores, total MRS scores and total MENQOL scores compared with placebo (P < 0.05). Meta-analysis of 10 EXD monotherapy or 2 paratherapy studies showed that both can significantly improve total effective rate compared with hormone (P < 0.05); 3 studies showed that EXD plus hormone significantly reduces the TCM syndrome scores, HAMD scale scores, SDS scores and SAS scores compared with hormone (P < 0.05). One study showed a significant effect of EXD for reducing AIS scores compared with hormone (P < 0.05); 7 studies showed contradictory effects for improving serological indicators compared with hormone. Two studies reported adverse effects, whereas the other studies did not mention. The quality of the evidence of primary outcomes was moderate to high according to the GRADE profiler. CONCLUSIONS: The present findings do not allow an assessment of the evidence because the low-quality studies included cannot be reproduced. However, we identified an area, which is worthy of further research. Rigorous RCTs are still needed in the future.


Assuntos
Medicamentos de Ervas Chinesas/administração & dosagem , Menopausa , Qualidade de Vida , Medicamentos de Ervas Chinesas/efeitos adversos , Medicamentos de Ervas Chinesas/farmacologia , Terapia de Reposição Hormonal/métodos , Fogachos/tratamento farmacológico , Humanos , Ensaios Clínicos Controlados Aleatórios como Assunto , Síndrome , Resultado do Tratamento
9.
Clin Nutr ; 37(5): 1462-1473, 2018 10.
Artigo em Inglês | MEDLINE | ID: mdl-28830700

RESUMO

BACKGROUND & AIMS: The effect of maternal omega-3 fatty acids intake on the body composition of the offspring is unclear. The aim of this study was to conduct a systematic review and meta-analysis to confirm the effects of omega-3 fatty acids supplementation during pregnancy and/or lactation on body weight, body length, body mass index (BMI), waist circumference, fat mass and sum of skinfold thicknesses of offspring. METHODS: Human intervention studies were selected by a systematic search of PubMed, Web of Science, the Cochrane Library and references of related reviews and studies. Randomized controlled trials of maternal omega-3 fatty acids intake during pregnancy or lactation for offspring's growth were included. The data were analyzed with RevMan 5.3 and Stata 12.0. Effect sizes were presented as weighted mean differences (WMD) or standardized mean difference (SMD) with 95% confidence intervals (95% CI). RESULTS: Twenty-six studies comprising 10,970 participants were included. Significant increases were found in birth weight (WMD = 42.55 g, 95% CI: 21.25, 63.85) and waist circumference (WMD = 0.35 cm, 95% CI: 0.04, 0.67) in the omega-3 fatty acids group. There were no effects on birth length (WMD = 0.09 cm, 95% CI: -0.03, 0.21), postnatal length (WMD = 0.13 cm, 95% CI: -0.11, 0.36), postnatal weight (WMD = 0.04 kg, 95% CI: -0.07, 0.14), BMI (WMD = 0.09, 95% CI: -0.05, 0.23), the sum of skinfold thicknesses (WMD = 0.45 mm, 95% CI: -0.30, 1.20), fat mass (WMD = 0.05 kg, 95% CI: -0.01, 0.11) and the percentage of body fat (WMD = 0.04%, 95% CI: -0.38, 0.46). CONCLUSIONS: This meta-analysis showed that maternal omega-3 fatty acids supplementation can increase offspring's birth weight and postnatal waist circumference. However, it did not appear to influence children's birth length, postnatal weight/length, BMI, sum of skinfold thicknesses, fat mass and the percentage of body fat during postnatal period. Larger, well-designed studies are recommended to confirm this conclusion.


Assuntos
Composição Corporal/fisiologia , Ácidos Graxos Ômega-3/farmacologia , Fenômenos Fisiológicos da Nutrição Pré-Natal/fisiologia , Peso ao Nascer , Composição Corporal/efeitos dos fármacos , Estatura , Índice de Massa Corporal , Aleitamento Materno , Suplementos Nutricionais , Ácidos Graxos Ômega-3/administração & dosagem , Feminino , Humanos , Recém-Nascido , Lactação , Masculino , Mães , Gravidez , Fenômenos Fisiológicos da Nutrição Pré-Natal/efeitos dos fármacos , Dobras Cutâneas
10.
Oxid Med Cell Longev ; 2017: 6313625, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-29430282

RESUMO

Ginseng is an important herbal drug that has been used worldwide for many years. Ginsenoside Rb1 (G-Rb1), the major pharmacological extract from ginseng, possesses a variety of biological activities in the cardiovascular systems. Here, we conducted a preclinical systematic review to investigate the efficacy of G-Rb1 for animal models of myocardial ischemia/reperfusion injury and its possible mechanisms. Ten studies involving 211 animals were identified by searching 6 databases from inception to May 2017. The methodological quality was assessed by using the CAMARADES 10-item checklist. All the data were analyzed using RevMan 5.3 software. As a result, the score of study quality ranged from 3 to 7 points. Meta-analyses showed that G-Rb1 can significantly decrease the myocardial infarct size and cardiac enzymes (including lactate dehydrogenase, creatine kinase, and creatine kinase-MB) when compared with control group (P < 0.01). Significant decrease in cardiac troponin T and improvement in the degree of ST-segment depression were reported in one study (P < 0.05). Additionally, the possible mechanisms of G-Rb1 for myocardial infarction are antioxidant, anti-inflammatory, antiapoptosis, promoting angiogenesis and improving the circulation. Thus, G-Rb1 is a potential cardioprotective candidate for further clinical trials of myocardial infarction.


Assuntos
Ginsenosídeos/uso terapêutico , Traumatismo por Reperfusão Miocárdica/tratamento farmacológico , Panax/metabolismo , Animais , Modelos Animais de Doenças , Feminino , Ginsenosídeos/administração & dosagem , Ginsenosídeos/farmacologia , Masculino , Ratos
11.
Int Immunopharmacol ; 26(1): 86-91, 2015 May.
Artigo em Inglês | MEDLINE | ID: mdl-25791728

RESUMO

Since the discovery of the endogenous receptor for Δ(9)-tetrahydrocannabinol, a main constituent of marijuana, the endocannabinoid system (comprising cannabinoid receptors and their endogenous ligands, as well as the enzymes involved in their metabolic processes) has been implicated as having multiple regulatory functions in many central and peripheral conditions, including rheumatoid arthritis (RA). RA is an immune-mediated inflammatory disease that is associated with the involvement of many kinds of cells (such as fibroblastlike synoviocytes [FLSs], osteoclasts, T cells, B cells, and macrophages) and molecules (such as interleukin-1ß, tumor necrosis factor-α, interleukin-6, matrix metalloproteinases [MMPs], and chemokines). Increasing evidence suggests that the endocannabinoid system, especially cannabinoid receptor 2 (CB2), has an important role in the pathophysiology of RA. Many members of the endocannabinoid system are reported to inhibit synovial inflammation, hyperplasia, and cartilage destruction in RA. In particular, specific activation of CB2 may relieve RA by inhibiting not only the production of autoantibodies, proinflammatory cytokines, and MMPs, but also bone erosion, immune response mediated by T cells, and the proliferation of FLSs. In this review, we will discuss the possible functions of the endocannabinoid system in the modulation of RA, which may be a potential target for treatment.


Assuntos
Artrite Reumatoide/tratamento farmacológico , Canabinoides/uso terapêutico , Endocanabinoides/imunologia , Receptores de Canabinoides/imunologia , Animais , Artrite Reumatoide/imunologia , Artrite Reumatoide/patologia , Canabinoides/administração & dosagem , Diferenciação Celular/efeitos dos fármacos , Proliferação de Células/efeitos dos fármacos , Citocinas/imunologia , Fibroblastos/efeitos dos fármacos , Fibroblastos/imunologia , Humanos , Osteoblastos/efeitos dos fármacos , Osteoblastos/imunologia
12.
J Asian Nat Prod Res ; 16(6): 677-84, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-24625202

RESUMO

A water-soluble polysaccharide (HPS3aS) with a molecular mass of 1.22 × 10(4) Da was isolated from Hedysarum polybotrys using anion-exchange and gel-permeation chromatography. HPS3aS exhibits a globular-shaped conformation in 0.1 M NaNO3 by size exclusion chromatography with multi-angle laser light scattering (SEC-MALLS). The investigation of the structural features of this heteropolysaccharide through a combination of chemical and instrumental analyses revealed that the backbone of HPS3aS is composed of α-D-(1 → 4)-linked glucopyranose residues, which occasionally branched at O-6. The branches are composed of (1 → 4)-linked galactopyranose residues and terminated with glucopyranose residues. HPS3aS possesses good in vitro antioxidant activity, as evaluated by scavenging assays with 1,1-diphenyl-2-picrylhydrazyl, hydroxyl, and superoxide radicals, which suggests that HPS3aS could be a potential antioxidant.


Assuntos
Antioxidantes/isolamento & purificação , Antioxidantes/farmacologia , Medicamentos de Ervas Chinesas/isolamento & purificação , Medicamentos de Ervas Chinesas/farmacologia , Fabaceae/química , Sequestradores de Radicais Livres/isolamento & purificação , Sequestradores de Radicais Livres/farmacologia , Polissacarídeos/isolamento & purificação , Polissacarídeos/farmacologia , Antioxidantes/química , Compostos de Bifenilo/farmacologia , Medicamentos de Ervas Chinesas/química , Sequestradores de Radicais Livres/química , Estrutura Molecular , Ressonância Magnética Nuclear Biomolecular , Oxirredução , Picratos/farmacologia , Raízes de Plantas/química , Polissacarídeos/química , Superóxidos/análise , Superóxidos/química , Água/química
13.
World J Pediatr ; 6(1): 50-4, 2010 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-20143211

RESUMO

BACKGROUND: Open colectomy has been preferred for intestinal neuronal dysplasia type B (IND) due to its low morbidity rate and good functional results. The aim of this study was to investigate the feasibility and results of laparoscopic colectomy with transanal Soave pull-through for the treatment of IND in children. METHODS: Seventeen infants and children suffering from IND were treated by laparoscopic extensive colectomy with transanal Soave pull-through. The diagnosis of IND was made via anorectal manometry, X-ray contrast enema, suction biopsies, and laparoscopic full-thickness biopsies with hematoxylin-eosin staining. The technique used four or five abdominal ports. The sigmoid, transverse, and right colon up to the last ileal cove were mobilized laparoscopically in the extended form of IND. A modified Soave's anastomosis was performed. The patients' data, surgical procedures, operative data, postoperative complications and clinical outcomes were analyzed. RESULTS: Five patients underwent laparoscopic left colectomy with modified transanal Soave procedures, and the other 12 were treated by laparoscopic subtotal colectomy and required a Deloyers' maneuver for the Soave pull-through. The proximal margin of barium stagnation in patients with left colectomy was restricted to the distal end of the descending colon, sigmoid colon, and that in patients with subtotal colectomy was restricted to the proximal end of the descending colon, transverse colon, hepatic flexure, and ascending colon. Postoperative complications included anastomotic leakage, severe perianal erosions, postoperative enterocolitis, and soiling. During a mean follow-up of 4 years, bowel frequency was 4-10 times per day in 3 months postoperatively in patients with subtotal colectomy. The clinical results were good, with no stool incontinence or constipation. CONCLUSIONS: Laparoscopic procedure for left colectomy and subtotal colectomy with transanal Soave pull-through in infants and children with IND is safe, feasible, and effective. The location of barium stagnation in proximal margin may be used as a method to predict initially the proximal margin of the resected bowel segment.


Assuntos
Colectomia , Enteropatias/cirurgia , Laparoscopia/métodos , Plexo Submucoso/patologia , Plexo Submucoso/cirurgia , Anastomose Cirúrgica/métodos , Criança , Pré-Escolar , Estudos de Viabilidade , Humanos , Hiperplasia , Lactente , Masculino , Complicações Pós-Operatórias , Plexo Submucoso/anormalidades
14.
Chin J Integr Med ; 12(2): 126-31, 2006 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-16800992

RESUMO

OBJECTIVE: To explore the growth inhibition effects and apoptosis inducing mechanisms of curcumin on human ovarian cancer cell line A2780. METHODS: After treatment with 10 - 50 micromol/L curcumin for 6 - 24 h, the growth activity of A2780 cancer cells were studied by [4, 5-dimethylthiazol-2-yl]-2, 5-diphenyltetrazolium bromide (MTT) colorimetry. Cellular apoptosis was inspected by flow cytometery and acridine orange-ethidium bromide fluorescent staining methods. The fragmentation of cellular chromosome DNA was detected by DNA ladder, the ultrastructural change was observed under a transmission electron microscope, and the protein levels of nuclear factor-kappa B (NF-kappaB, P65) and cysteinyl aspartate specific protease-3 (Caspase-3) in ovarian cancer cells were measured by immunohistochemistry. RESULTS: After treatment with various concentrations of curcumin, the growth inhibition rates of cancer cells reached 62.05% - 89.24%, with sub-G(1) peaks appearing on histogram. Part of the cancer cells showed characteristic morphological changes of apoptosis under fluorescence and electron microscopes, and the rate of apoptosis was 21.5% - 33.5%. The protein expression of NF-kappaB was decreased, while that of Caspase-3 was increased in a time-dependent manner. CONCLUSION: Curcumin could significantly inhibit the growth of human ovarian cancer cells; inducing apoptosis through up-regulating Caspase-3 and down-regulating gene expression of NF-kappaB is probably one of its molecular mechanisms.


Assuntos
Apoptose/efeitos dos fármacos , Divisão Celular/efeitos dos fármacos , Curcumina/farmacologia , Neoplasias Ovarianas/patologia , Laranja de Acridina , Caspase 3/análise , Linhagem Celular Tumoral , Colorimetria , Fragmentação do DNA , Regulação para Baixo , Etídio , Feminino , Citometria de Fluxo , Humanos , Imuno-Histoquímica , Microscopia Eletrônica de Transmissão , NF-kappa B/análise , Regulação para Cima
15.
Ai Zheng ; 21(12): 1296-300, 2002 Dec.
Artigo em Chinês | MEDLINE | ID: mdl-12520734

RESUMO

BACKGROUND & OBJECTIVE: Curcumin is the major effective component of curcuma, which is a kind of traditional Chinese medicine. It has been paid more attention to curcumin recently for its specific proliferation inhibition and apoptosis inducing effects on tumor cells; however, the involved mechanisms were not clear. This study was designed to explore the apoptosis inducing effects of curcumin on human ovary A2780 cell line and its related molecular mechanisms. METHODS: A2780 cancer cells were treated with 10-50 mumol/L curcumin for 6-24 h and the growth inhibition rates of A2780 cancer cells were measured by MTT method. Cell apoptosis was inspected by flow cytometry (FCM) and acridine orange-ethidium bromide fluorescent staining method. The protein levels of NF-kappa B (P65) and Caspase-3 in cancer cells were observed by SP immunohistochemistry. RESULTS: The growth inhibition rates of the cancer cells reached 62.05%-89.24%, with the peak of sub G1 appeared on DNA histogram in FCM. Partial cells presented the characteristic morphological changes of apoptosis under the fluorescent microscope; the apoptosis rates were 21.5%-33.5%. The NF-kappa B (p65) expression was decreased while Caspase-3 expression was increased, which depended on the action time. CONCLUSIONS: Curcumin could significantly inhibit the growth of ovary cancer cells; inducing apoptosis through up-regulating Caspase-3 and down-regulating expression of NF-kappa B was probably one of its molecular mechanisms.


Assuntos
Antineoplásicos/farmacologia , Apoptose , Curcumina/farmacologia , Caspase 3 , Caspases/metabolismo , Divisão Celular/efeitos dos fármacos , Relação Dose-Resposta a Droga , Feminino , Humanos , NF-kappa B/metabolismo , Neoplasias Ovarianas/patologia , Células Tumorais Cultivadas
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