Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 73
Filtrar
Mais filtros

Medicinas Complementares
País/Região como assunto
Tipo de documento
Intervalo de ano de publicação
1.
Zhongguo Zhong Yao Za Zhi ; 48(10): 2820-2828, 2023 May.
Artigo em Chinês | MEDLINE | ID: mdl-37282942

RESUMO

This study aims to explore the effect of "Trichosanthis Fructus-Allii Macrostemonis" combination(GX) on the activation of NOD-, LRR-, and pyrin domain-containing protein 3(NLRP3) inflammasome, the release of inflammatory cytokines, and the level of autophagy in RAW264.7 macrophage damaged by lipopolysaccharide(LPS), and the mechanism of GX against inflammatory response in macrophages. To be specific, LPS was used to induce the injury of RAW264.7 cells. Cell Counting Kit-8(CCK-8) assay was employed to measure the survival rate of cells, and Western blot to detect the protein expression of NLRP3, apoptosis-associated speck-like protein(ASC), cysteine-aspartic acid protease(caspase)-1, interleukin(IL)-18, IL-1ß, microtubule-associated protein light chain 3(LC3)-Ⅱ, and selective autophagy junction protein p62/sequestosome 1 in RAW264.7 macrophages. ELISA was used to measure the levels of IL-18 and IL-1ß in RAW264.7 cells. Transmission electron microscopy was applied to observe the number of autophagosomes in RAW264.7 cells. Immunofulourescence staining was used to detect the expression of LC3-Ⅱ and p62 in RAW264.7 cells. The result showed that GX significantly reduced the protein expression of NLRP3, ASC, and caspase-1 in RAW264.7 cells, significantly increased the protein expression of LC3Ⅱ, decreased the expression of p62, significantly inhibited the secretion of IL-18 and IL-1ß, significantly increased the number of autophagosomes, significantly enhanced the immunofluorescence of LC3Ⅱ, and reduced the immunofluorescence of p62. Furthermore, 3-methyladenine(3-MA) could reverse the inhibitory effect of GX on NLRP3, ASC, and caspase-1 and reduce the release of IL-18 and IL-1ß. In summary, GX can increase of the autophagy activity of RAW264.7 and inhibit the activation of NLRP3 inflammasome, thereby reducing the release of inflammatory cytokines and suppressing inflammatory response in macrophages.


Assuntos
Inflamassomos , Proteína 3 que Contém Domínio de Pirina da Família NLR , Inflamassomos/metabolismo , Proteína 3 que Contém Domínio de Pirina da Família NLR/genética , Proteína 3 que Contém Domínio de Pirina da Família NLR/metabolismo , Interleucina-18/metabolismo , Lipopolissacarídeos/farmacologia , Macrófagos , Citocinas/metabolismo , Caspase 1/metabolismo , Autofagia , Interleucina-1beta/genética , Interleucina-1beta/metabolismo
2.
Gene ; 851: 146973, 2023 Jan 30.
Artigo em Inglês | MEDLINE | ID: mdl-36306943

RESUMO

BACKGROUND: Yin-chen Wu-ling Powder (YWP) has potential therapeutic effects on cholestatic liver disease (CLD), however, its active compounds and conceivable mechanism are as yet indistinct. METHODS: The network pharmacology and gene function annotation examined the multiple active ingredients, potential targets, and possible mechanisms of YWP in CLD treatment. Then the molecular docking reassured the reliability of the core compounds including the key genes and farnesoid X receptor (FXR). Finally, The Mdr2-/- mice were used to test the effect and mechanism of YWP against CLD. RESULTS: The network analysis identified nine main active ingredients, including quercetin, capillarisin, eupalitin, isorhamnetin, skrofulein, genkwanin, cerevisterol, gederagenin, and sitosterol. The PPI network predicted the ten hub genes involved were AKT1, MAPK1, MAPK14, IL6, RXRA, ESR1, IL10, NCOA1, CAV1, and EGFR. The KEGG and GO analysis showed that YWP might contribute to CLD treatment through the PI3K/Akt and MAKP signalings to manage pathological reactions, for instance, inflammatory responses. The molecular docking displayed a functional similarity among the core compounds with ursodeoxycholic acid (UDCA) and Obeticholic acid (OCA) on the effects on AKT1, MAPK1, MAPK14, RXRA, and ESR, and the affinity to FXR. In addition, the YWP could significantly attenuate hepatic injury and improve inflammatory response in Mdr2-/- mice. The mechanism exploration showed that YWP mainly decreased inflammatory response by inhibiting AKT/P38MAPK signaling. CONCLUSION: This study firstly revealed the multiple active ingredients, potential targets, and possible mechanism of YWP to treat CLD based on network pharmacology Analysis and molecular docking. YWP could alleviate cholestasis in Mdr2-/- mice by impairing inflammation via inhibiting AKT/P38MAPK Signaling.


Assuntos
Colestase , Medicamentos de Ervas Chinesas , Hepatopatias , Proteína Quinase 14 Ativada por Mitógeno , Camundongos , Animais , Pós , Simulação de Acoplamento Molecular , Fosfatidilinositol 3-Quinases/genética , Proteínas Proto-Oncogênicas c-akt , Reprodutibilidade dos Testes , Colestase/tratamento farmacológico , Colestase/genética , Medicamentos de Ervas Chinesas/farmacologia , Medicamentos de Ervas Chinesas/uso terapêutico , Hepatopatias/tratamento farmacológico
3.
Acta Pharmaceutica Sinica ; (12): 1452-1463, 2023.
Artigo em Chinês | WPRIM | ID: wpr-978738

RESUMO

This study aimed to investigate the mechanism of "Trichosanthis Fructus-Allii Macrostemonis Bulbus" (GX) on phlegm and blood stasis syndrome (PBSS) rats combining the methods of network pharmacology and experimental verification. Animal experiment ethical requirements were approved by the Ethical Committee Experimental Animal Center of Anhui University of Chinese Medicine (grant number: AHUCM-rats-2021070). Based on the HPLC-Q-TOF-MS analysis and database, 69 chemical constituents of GX and 163 targets of GX for the treatment of phlegm and blood stasis-related cardiovascular diseases were obtained. Then, key targets such as serine/threonine kinase 1 (Akt1), tumor necrosis factor (TNF), interleukin 6 (IL6), vascular endothelial growth factor A (VEGFA), cellular tumor antigen p53 (Tp53) were screened. Pathway analysis showed that the targets of GX in the treatment of phlegm and blood stasis-relate cardiovascular diseases were mainly involved in PI3K/Akt signaling pathway, sphingolipid metabolism, platelet activation, hypoxia inducible factor-1 (HIF-1), ras-proximate-1 (rap1) and other signaling pathways. In addition, molecular docking analysis showed that apigenin, cucurbitacin D, linolenic acid and kaempferol and other key components had potential binding ability with Akt1, TNF, IL6, VEGFA and Tp53. In the animal experiments, compared to the phlegm and blood stasis syndrome group, GX could significantly improve the traditional Chinese medicine syndrome score, blood lipid, vascular endothelial structure disorders and reduce serum endothelin-1 (ET-1) level, increase serum nitric oxide (NO) and endothelial nitric oxide synthase (eNOS) levels, which could restore aortic endothelial function. In addition, the expression of intercellular cell adhesion molecule-1 (ICAM-1) and vascular cell adhesion molecule-1 (VCAM-1) in aorta could be significantly reduced, which could improve the vascular endothelial injury of aorta. Western blot revealed that GX could significantly decrease the phosphorylation levels of phosphoinositide 3-kinase (PI3K) and Akt in aorta. This study revealed the mechanism of GX in treatment of phlegm and blood stasis-relate cardiovascular diseases is consistent with the characteristics of multiple ingredients, multiple targets and multiple pathways. In addition, this study also clarified that the reversal of pathological of phlegm and blood stasis syndrome rats may be related to GX inhibiting PI3K/Akt signaling pathway, which could improve vascular inflammation and vascular endothelial function injury.

4.
Front Pharmacol ; 13: 957829, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36147338

RESUMO

Background: Yunpi-Huoxue-Sanjie (YP-SJ) formula is a Chinese herbal formula with unique advantages for the treatment of diabetic cardiovascular complications, such as Diabetic cardiomyopathy (DCM). However, potential targets and molecular mechanisms remain unclear. Therefore, our research was designed to evaluate rat myocardial morphology, fat metabolism and oxidative stress to verify myocardial protective effect of YP-SJ formula in vivo. And then to explore and validate its probable mechanism through network pharmacology and experiments in vitro and in vivo. Methods: In this study, DCM rats were randomly divided into five groups: control group, model group, and three YP-SJ formula groups (low-dose, middle-dose, and high-dose groups). Experimental rats were treated with 6 g/kg/d, 12 g/kg/d and 24 g/kg/d YP-SJ formula by gavage for 10 weeks, respectively. Cardiac function of rats was measured by high-resolution small-animal imaging system. The cells were divided into control group, high glucose group, high glucose + control serum group, high glucose + dosed serum group, high glucose + NC-siRNA group, high glucose + siRNA-FoxO1 group. The extent of autophagy was measured by flow cytometry, immunofluorescence, and western blotting. Results: It was found that YP-SJ formula could effectively improve cardiac systolic function in DCM rats. We identified 46 major candidate YP-SJ formula targets that are closely related to the progression of DCM. Enrichment analysis revealed key targets of YP-SJ formula related to environmental information processing, organic systems, and the metabolic occurrence of reactive oxygen species. Meanwhile, we verified that YP-SJ formula can increase the expression of forkhead box protein O1 (FoxO1), autophagy-related protein 7 (Atg7), Beclin 1, and light chain 3 (LC3), and decrease the expression of phosphorylated FoxO1 in vitro and in vivo. The results showed that YP-SJ formula could activate the FoxO1 signaling pathway associated with DCM rats. Further experiments showed that YP-SJ formula could improve cardiac function by regulating autophagy. Conclusion: YP-SJ formula treats DCM by modulating targets that play a key role in autophagy, improving myocardial function through a multi-component, multi-level, multi-target, multi-pathway, and multi-mechanism approach.

5.
Zhen Ci Yan Jiu ; 46(7): 555-61, 2021 Jul 25.
Artigo em Chinês | MEDLINE | ID: mdl-34369674

RESUMO

OBJECTIVE: To observe the histological and ultrastructural changes of the otopoint "Stomach" (MA-IC) area in chronic gastritis rabbits so as to provide a foundation for auricular acupoint diagnosis and treatment. METHODS: A total of 20 New Zealand rabbits (half male and half female) were randomly and equally divided into control and model groups. The chronic gastritis model was established by gavage of 5% sodium salicylate each day for 5 weeks, while the rabbits of the control group received gavage of clear water at the same volume. Morphological changes of the tissues of gastric mucosa, otopoint "Stomach" and auricular control point were observed under light microscope after staining with hematoxylin-eosin (H.E.), and given scores (0-3 points) according to the levels of inflammatory cells. The ultrastructural changes of the otopoint "Stomach" tissue were observed under transmission electronic microscope (TEM). RESULTS: H.E. staining revealed smoothness of the gastric smooth muscle with no or a few of inflammatory cells in the control group, and appearance of gastric mucosal hemorrhage and erosion, slightly disordered epithelial glands and infiltration of a large number of lymphocytes in the mucosal layer with some clustered lymphocyte aggregation foci in the model group. The pathological score of gastric mucous in the model group was significantly higher than that in the control group (P<0.01). Under light microscope, no obvious changes were observed in the skin of the otopoint "Stomach" of the control group and the control point of the model group, whereas hyperplasia and abscission in the epidermic cuticle and spinous layer and basal layer, dermal tissue and inflammatory cell infiltration were observed in the otopoint "Stomach" of the model group. Results of TEM observation showed no significant changes in the ultrastructure of the otopoint "Stomach" in the control group, and swollen and vacuolated epidermal keratinocyte mitochondria, reduced keratin filament aggregation, widened local cell space, unclear desmosome structure, activation of the dermal fibroblasts, and an increase of the myelinated nerve mitochondria in the "Stomach" region in the model group. CONCLUSION: The otopoint "Stomach" tissue has structural damage and hyperplasia in chronic gastritis rabbits, suggesting a special correlation between the otopoint "Stomach" and gastric tissue, hence, providing a morphological basis for otopoint diagnosis and treatment.


Assuntos
Gastrite Atrófica , Pontos de Acupuntura , Animais , Feminino , Mucosa Gástrica , Hiperplasia/patologia , Masculino , Coelhos
6.
New Phytol ; 232(2): 835-852, 2021 10.
Artigo em Inglês | MEDLINE | ID: mdl-34289124

RESUMO

Despite a much higher proportion of intragenic heterochromatin-containing genes in crop genomes, the importance of intragenic heterochromatin in crop development remains unclear. Intragenic heterochromatin can be recognised by a protein complex, ASI1-AIPP1-EDM2 (AAE) complex, to regulate alternative polyadenylation. Here, we investigated the impact of rice ASI1 on global poly(A) site usage through poly(A) sequencing and ASI1-dependent regulation on rice development. We found that OsASI1 is essential for rice pollen development and flowering. OsASI1 dysfunction has an important impact on global poly(A) site usage, which is closely related to heterochromatin marks. Intriguingly, OsASI1 interacts with the intronic heterochromatin of OsXRNL, a nuclear XRN family exonuclease gene involved in the processing of an miRNA precursor, to promote the processing of full-length OsXRNL and regulate miRNA abundance. We found that OsASI1-mediated regulation of pollen development partially depends on OsXRNL. Finally, we characterised the rice AAE complex and its involvement in alternative polyadenylation and pollen development. Our findings help to elucidate an epigenetic mechanism governing miRNA abundance and rice development, and provide a valuable resource for studying the epigenetic mechanisms of many important processes in crops.


Assuntos
MicroRNAs , Oryza , Regulação da Expressão Gênica de Plantas , Heterocromatina/genética , MicroRNAs/genética , Oryza/genética , Pólen/genética , Poliadenilação
7.
Medicine (Baltimore) ; 99(45): e22771, 2020 Nov 06.
Artigo em Inglês | MEDLINE | ID: mdl-33157923

RESUMO

Mutations in the methylenetetrahydrofolate reductase (MTHFR) gene can result in a reduced ability to utilize folic acid. The MTHFR 677C>T polymorphism in particular has been linked to both birth defects and pregnancy-associated diseases. This study aimed to evaluate the prevalence of the MTHFR 677C>T mutation among pregnant women in Yunnan Province so as to collect baseline data that may be utilized to guide folic acid supplementation efforts and to support related disease prevention programs. We retrospectively reviewed 3387 pregnant women from Yunnan Province. The MTHFR 677C>T polymorphism was identified using polymerase chain reaction (PCR) and DNA sequencing. In total, 1350 (39.9%) subjects were homozygous for the C allele (CC), 1540 (45.4%) subjects were heterozygous (CT), and 497 (14.7%) subjects were homozygous for the T allele (TT). The MTHFR 677C>T polymorphism was found to be present within the studied population, with ∼60% of these patients being either heterozygous or homozygous for the mutant allele and with an overall T allele frequency of 0.37. The frequency of the T allele was significantly higher among pregnant women with complications relative to women with healthy pregnancies, particularly among women <30 years old. As such, the maternal MTHFR 677C>T polymorphism may be a genetic risk factor associated with pregnancy complications and may help identify pregnant women at a high risk of such complications.


Assuntos
Metilenotetra-Hidrofolato Redutase (NADPH2)/genética , Polimorfismo Genético , Adulto , Alelos , China/epidemiologia , Feminino , Humanos , Mutação , Gravidez , Prevalência , Estudos Retrospectivos , Fatores de Risco
8.
J Dermatolog Treat ; 31(1): 91-98, 2020 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-30892982

RESUMO

Introduction: The National Comprehensive Cancer Network and the European Organization for Research and Treatment of Cancer recommend extracorporeal photopheresis (ECP) as systemic therapy for cutaneous T-cell lymphoma (CTCL).Objective: To investigate real-world use of ECP in CTCL patients in the US.Methods: Data from the Truven MarketScan® database (2010-2015) were used to create a cohort of CTCL patients receiving systemic treatment. Multivariable regressions were performed to compare health care resource utilization between ECP and propensity score-matched non-ECP patients.Results: Of the 1106 eligible patients, 117 (10.6%) received ECP, with an average treatment duration of 13.6 months. Psoriasis, organ transplant, graft versus host disease, and scleroderma were the most common comorbidities. ECP was used as monotherapy in 76 patients (65.0%) and combination in 41 patients (35.0%), mostly with interferon and/or a retinoid. Higher Charlson Comorbidity Index (2.6 vs 2.2, p < .05), rates of organ transplant (49.6% vs 7.8%, p < .001), and graft vs host disease (41.9% vs 3.4%, p < .001) were observed in ECP versus non-ECP patients. Post-matching analyses showed that ECP patients had shorter all-cause inpatient stay (6.67 vs 11.80 days, p = .001).Conclusions: Approximately 1 out of 10 CTCL patients receiving systemic treatment were on ECP treatment in the US. Post-matching analysis showed ECP was associated with a shorter hospital stay.


Assuntos
Linfoma Cutâneo de Células T/terapia , Fotoferese , Adolescente , Adulto , Idoso , Comorbidade , Bases de Dados Factuais , Circulação Extracorpórea , Feminino , Humanos , Interferons/uso terapêutico , Linfoma Cutâneo de Células T/tratamento farmacológico , Linfoma Cutâneo de Células T/patologia , Masculino , Pessoa de Meia-Idade , Retinoides/uso terapêutico , Estados Unidos , Adulto Jovem
9.
Brain Res ; 1724: 146464, 2019 12 01.
Artigo em Inglês | MEDLINE | ID: mdl-31536729

RESUMO

Visceral pain is a complex and common symptom of inflammatory bowel disease (IBD) patients. Developing novel efficient therapeutics is still a common interest for clinicians. Increasing evidence have shown that tumor necrosis factor (TNF) receptor associated factor 6 (TRAF6) contributes to the pathological pain state in some pain models. Resveratrol (RSV) has showed promising potential for the treatment of neuropathic pain and inflammatory pain. However, whether RSV has analgesic effect on visceral pain and the underlying mechanisms remain unclear. In this study, we established the colitis model through intrarectal administration of 2,4,6-trinitrobenzene sulfonic acid (TNBS), and found that TNBS induced colonic inflammation and visceral hypersensitivity. Meanwhile, astroglial marker glial fibrillary acidic protein (GFAP), TRAF6, phosphorylation of NF-κB (pNF-κB), tumor necrosis factor-α (TNF-α) and interleukin-1ß (IL-1ß) levels were increased in L6-S1 spinal cord after TNBS enema. Then, intrathecal injection of TRAF6 siRNA attenuated visceral pain, blocked the upregulation of pNF-κB, TNF-α and IL-1ß levels in the spinal cord in TNBS mice. Furthermore, spinal administration of NF-κB inhibitor, BAY11-7082 reversed the pain behavior and suppressed spinal TNF-α and IL-1ß expression in TNBS mice. Finally, repeated intrathecal injection of RSV reversed TNBS-induced visceral pain hypersensitivity in a dose-dependent manner. Meanwhile, TNBS-induced enhancement of spinal GFAP, TRAF6, pNF-κB, TNF-α and IL-1ß were reduced by the same treatment of RSV. In conclusion, our results suggest that RSV exerts the effects of antinociception on colitis-induced visceral hyperalgesia through inhibition of spinal TRAF6/NF-κB signaling pathway and the production of inflammatory mediators in the spinal cord, suggesting a new application of RSV for the treatment of visceral pain.


Assuntos
Resveratrol/farmacologia , Dor Visceral/tratamento farmacológico , Dor Visceral/metabolismo , Analgésicos/farmacologia , Animais , Colite/tratamento farmacológico , Colite/fisiopatologia , Proteína Glial Fibrilar Ácida/metabolismo , Hiperalgesia/metabolismo , Masculino , Camundongos , Camundongos Endogâmicos C57BL , NF-kappa B/metabolismo , Neuralgia/metabolismo , Resveratrol/metabolismo , Transdução de Sinais/efeitos dos fármacos , Medula Espinal/efeitos dos fármacos , Medula Espinal/metabolismo , Fator 6 Associado a Receptor de TNF/metabolismo , Fator de Necrose Tumoral alfa/metabolismo
10.
J Food Biochem ; 43(11): e13025, 2019 11.
Artigo em Inglês | MEDLINE | ID: mdl-31456236

RESUMO

The present study was designed to analyze and compare phytochemical activities of four different cultivars of kiwifruit. Among all investigated varieties, Hua You (HY) and Cui Xiang (CUX) displayed the maximum concentration of phytochemical content, and the highest total phenolic results were observed in HY and CUX cultivars with 220.20 ± 1.12 mg GAE/100 g and 218.04 ± 1.11 mg GAE/100 g FW, respectively. Likewise, the richest total flavonoids results were estimated in red kiwifruit (RKF) and CUX varieties with 49.082 ± 0.14 mg CE/100 g FW and 48.327 ± 0.14 mg CE/100 g FW, respectively. Moreover, tests for oxygen radical scavenging capacity (ORAC) and peroxyl radical scavenging capacity (PSC) were observed maximum in RKF cultivar showing 131.229 ± 5.91 µM Trolox equivalent/g FW and 85.957 ± 11.75 µM vitamin C equivalent/g FW, respectively. Furthermore, the highest cellular antioxidant activity (CAA) with No PBS wash protocol was depicted in RKF 237.544 ± 4.12 µM QE equivalent/g FW with the lowest EC50 0.0128 mg/ml. In addition, high-performance liquid chromatography (HPLC) analysis confirmed the presence of ferulic acid, naringin, gallic acid, syringic acid, caffeic acid, rutin, protocatechuic acid, salicylic acid, and catechin in kiwifruit. Catechin as one main content in our study is consistent with the recent reports. The result suggested that the phytochemical profile and bioactivities were significantly affected by the type of cultivars. PRACTICAL APPLICATIONS: Kiwifruit is widely consumed over the world for its rich nutritious and medicinal values. Currently, phytochemicals are considered as one of the main bioactive components of kiwifruits, which are responsible for lots of bioactivities, such as antitumor, anti-inflammatory, antioxidant, hypoglycemic, and hypolipidemic activities. There are varieties of kiwifruits, and the bioactive components and bioactivities are greatly affected by the cultivars. But there have been no comparative studies on the phytochemicals from different varieties. This study aimed to make a comprehensive assessments of the free, bound, and total phenolics and flavonoids, as well as the chemical-based and cell-based antioxidant activities of four different subspecies of kiwifruit. This work would be beneficial to elucidate the function differences of different kiwifruit phytochemicals, promote its further research, as well as provide a basis for selecting cultivars.


Assuntos
Actinidia/química , Antioxidantes/química , Inibidores do Crescimento/química , Compostos Fitoquímicos/química , Extratos Vegetais/química , Antioxidantes/farmacologia , Proliferação de Células/efeitos dos fármacos , Cromatografia Líquida de Alta Pressão , Frutas/química , Inibidores do Crescimento/farmacologia , Humanos , Compostos Fitoquímicos/farmacologia , Extratos Vegetais/farmacologia
11.
Food Funct ; 10(6): 3684-3695, 2019 Jun 19.
Artigo em Inglês | MEDLINE | ID: mdl-31168531

RESUMO

In this study, the structure characteristics and the hypoglycemic and antioxidant activities of mulberry fruit polysaccharides obtained by the commonly used hot water (MFPh)-, ultrasonic (MFPu)-, acid (MFPc)- and alkali (MFPa)-assisted extraction methods were investigated. NMR analysis indicated that the four polysaccharides had similar glycosidic linkage patterns. Scanning electron microscopy analyses showed that the surface morphology of the polysaccharides was greatly affected by the extraction methods. The results of the bioactivity assays indicated that MFPh exhibited stronger antioxidant and α-amylase inhibitory activities than the other polysaccharides. Moreover, all the polysaccharides showed good α-glucosidase inhibitory activities except for MFPu with the lowest molecular weight. These results suggested that acid, alkali, and ultrasonic-assisted extractions have different effects on the degradation of polysaccharides without changing the main structure compared with hot water extraction. In addition, the molecular weight of polysaccharides plays a key role in the bioactivity of the mulberry fruit polysaccharides.


Assuntos
Fracionamento Químico/métodos , Morus/química , Extratos Vegetais/química , Extratos Vegetais/isolamento & purificação , Polissacarídeos/química , Polissacarídeos/isolamento & purificação , Antioxidantes/química , Antioxidantes/isolamento & purificação , Inibidores Enzimáticos/química , Inibidores Enzimáticos/isolamento & purificação , Frutas/química , Glucose/química , Inibidores de Glicosídeo Hidrolases/química , Inibidores de Glicosídeo Hidrolases/isolamento & purificação , Peso Molecular , alfa-Amilases/antagonistas & inibidores , alfa-Amilases/química , alfa-Glucosidases/química
12.
Food Funct ; 10(1): 410-421, 2019 Jan 22.
Artigo em Inglês | MEDLINE | ID: mdl-30604796

RESUMO

This study examined the effects of different extraction temperatures (30 °C and 90 °C) on the physicochemical properties and bioactivities of polysaccharides (MFPs-30-60, MFPs-30-80, MFPs-90-40, MFPs-90-60 and MFPs-90-80) extracted at same ethanol gradation (40, 60 and 80%). The polysaccharides were extracted from Fructus Mori, and their antioxidant, hypoglycemic and hypolipidemic activities were evaluated. The results showed that all the polysaccharide fractions contained the same monosaccharides but at different molar ratios. MFPs-30-80 had the highest content of glucose (30.33%), and MFPs-90-40 had the highest content of uronic acid (43.46%). In addition, compared to the extraction temperature of 30 °C, the higher temperature (90 °C) caused the degradation of the extracted polysaccharides. Generally, MFPs-30-80 showed superior antioxidant activity, MFPs-90-40 displayed good bile acid-binding ability, and both MFPs-30-80 and MFPs-90-40 exhibited the strongest inhibitory effects on α-amylase and α-glucosidase activity. This study concludes that the bioactivities of mulberry fruit polysaccharides depend on a combination of structural factors that are greatly affected by the extraction temperature.


Assuntos
Antioxidantes/química , Morus/química , Extratos Vegetais/química , Polissacarídeos/química , Antioxidantes/isolamento & purificação , Fracionamento Químico , Inibidores Enzimáticos/química , Inibidores Enzimáticos/isolamento & purificação , Etanol/química , Hipoglicemiantes/química , Hipoglicemiantes/isolamento & purificação , Peso Molecular , Extratos Vegetais/isolamento & purificação , Polissacarídeos/isolamento & purificação , Temperatura , alfa-Amilases/antagonistas & inibidores
13.
Medicine (Baltimore) ; 97(31): e11694, 2018 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-30075569

RESUMO

Baseline and on-treatment characteristics, including age, obesity, calcium intake, and bone turnover markers, may predict the bone mineral density (BMD) response in women with postmenopausal osteoporosis (PMO) to 1 to 2 years of antiresorptive therapy and/or vitamin D supplementation. This study aimed to explore clinical characteristics associated with 12-month BMD improvement in Chinese women with postmenopausal osteoporosis (PMO).In this post hoc analysis of a previous phase 3 multicenter, randomized controlled trial, Chinese PMO women who were treated with once weekly alendronate 70 mg/vitamin D3 5600 IU (ALN/D5600) or once daily calcitriol 0.25 mcg, and had measurements of 1-year lumbar spine BMD (LS-BMD) and on-treatment bone turnover markers (BTMs) were included in the analysis.In Chinese PMO patients on ALN/D5600, 1-year LS-BMD change was negatively correlated with age (ß = -0.00084, P < .01), dietary calcium (ß = -0.0017, P = .07), and procollagen type 1 N-terminal propeptide (P1NP) change at month 6 (ß = -0.000469, P = .0016), but positively with body mass index (BMI) (ß = 0.00128, P = .08); baseline P1NP above the median was associated with a significantly greater BMD percentage change at the lumbar spine (P = .02) and the total hip (P = .0001). In the calcitriol group, a significant 1-year LS-BMD increase was associated with BMI (ß = 0.0023, P = .02), baseline P1NP (ß = 0.00035, P = .0067), history of prior vertebral fracture(s) (ß = 0.034, P < .0001) and baseline serum 25(OH)D level (ß = -0.00083, P = .02).The presented findings from Chinese postmenopausal osteoporotic women suggested clinically meaningful baseline and on-treatment characteristics predicting BMD improvement after 1 year of ALN/D5600 treatment, which differed from calcitriol treatment with baseline identifiable associations. The study remained exploratory and further accumulation of evidence is needed.


Assuntos
Alendronato/administração & dosagem , Conservadores da Densidade Óssea/administração & dosagem , Densidade Óssea/efeitos dos fármacos , Calcitriol/administração & dosagem , Colecalciferol/administração & dosagem , Osteoporose Pós-Menopausa/tratamento farmacológico , Idoso , China , Suplementos Nutricionais , Feminino , Humanos , Vértebras Lombares/fisiopatologia , Pessoa de Meia-Idade , Osteoporose Pós-Menopausa/fisiopatologia , Fatores de Tempo , Resultado do Tratamento
14.
Food Funct ; 9(7): 3732-3742, 2018 Jul 17.
Artigo em Inglês | MEDLINE | ID: mdl-29995048

RESUMO

Increasing evidence indicates that gut microbiota is an important factor in mediating the development of metabolic disorders, especially type 2 diabetes. Herein, we investigated the protective effects of polysaccharides from mulberry fruit on diabetic db/db mice. We observed an inhibition in the body weight increase, a decrease in the blood glucose levels, and an improvement in glucose tolerance. Furthermore, our data showed increased enzymatic activities as evidenced by parameters such as superoxide dismutase (SOD), glutathione peroxidase (GSH-Px), and catalase (CAT). In addition, high density lipoprotein cholesterol (HDL-C) increased, while total cholesterol (TC), triacylglycerol (TG), low density lipoprotein cholesterol (LDL-C), lipid peroxide content malonaldehyde (MDA), and free fatty acid (FFA) levels decreased, accompanied by the recovery from damage to the liver, kidneys and pancreas. Meanwhile, metformin and polysaccharide similarly shifted the abundance of the main gut microbiota, Bacteroidetes and Firmicutes, in diabetic mice toward levels observed in healthy mice. Especially at the genus level, the enrichment of some key bacteria like Bacteroidales, Lactobacillus, Allobaculum, Bacteroides, and Akkermansia was observed. Taken together, our findings suggest that polysaccharides from the mulberry fruit modulate gut microbiota, including enriching functional bacteria and reducing microbial diversity, which may contribute to their antidiabetic effects.


Assuntos
Diabetes Mellitus Tipo 2/tratamento farmacológico , Microbioma Gastrointestinal/efeitos dos fármacos , Hipoglicemiantes/administração & dosagem , Morus/química , Obesidade/tratamento farmacológico , Extratos Vegetais/administração & dosagem , Polissacarídeos/administração & dosagem , Animais , Bactérias/classificação , Bactérias/genética , Bactérias/isolamento & purificação , Catalase/metabolismo , Diabetes Mellitus Tipo 2/metabolismo , Diabetes Mellitus Tipo 2/microbiologia , Modelos Animais de Doenças , Frutas/química , Glutationa Peroxidase/metabolismo , Humanos , Masculino , Malondialdeído/metabolismo , Camundongos , Obesidade/metabolismo , Obesidade/microbiologia
15.
J Agric Food Chem ; 66(27): 7023-7035, 2018 Jul 11.
Artigo em Inglês | MEDLINE | ID: mdl-29929367

RESUMO

Ginseng is widely used in energy drinks, dietary supplements, and herbal medicines, and its pharmacological actions are related with energy metabolism. As an important modulating energy metabolism pathway, liver X receptors (LXRs) can promote the resolving of hepatic fibrosis and inflammation. The present study aims to evaluate the regulation of 25-OCH3-PPD, a ginsenoside isolated from Panax ginseng, against hepatic fibrosis and inflammation in thioacetamide (TAA)-stimulated mice by activating the LXRs pathway. 25-OCH3-PPD decreases serum ALT/AST levels and improves the histological pathology of liver in TAA-induced mice; attenuates transcripts of pro-fibrogenic markers associated with hepatic stellate cell activation; attenuates the levels of pro-Inflammatory cytokines and blocks apoptosis happened in liver; inhibits NLRP3 inflammasome by affecting P2X7R activation; and regulates PI3K/Akt and LKB1/AMPK-SIRT1. 25-OCH3-PPD also facilitates LX25Rs and FXR activities decreased by TAA stimulation. 25-OCH3-PPD also decreases α-SMA via regulation of LXRs and P2X7R-NLRP3 in vitro. Our data suggest the possibility that 25-OCH3-PPD promotes activity of LXRs to ameliorate P2X7R-mediated NLRP3 inflammasome in the development of hepatic fibrosis.


Assuntos
Ginsenosídeos/farmacologia , Inflamassomos/efeitos dos fármacos , Cirrose Hepática/tratamento farmacológico , Receptores X do Fígado/metabolismo , Receptores Purinérgicos P2X7/metabolismo , Proteínas Quinases Ativadas por AMP , Animais , Anti-Inflamatórios não Esteroides/farmacologia , Apoptose/efeitos dos fármacos , Citocinas/genética , Citocinas/metabolismo , Inflamassomos/metabolismo , Cirrose Hepática/induzido quimicamente , Cirrose Hepática/metabolismo , Masculino , Camundongos Endogâmicos C57BL , Proteína 3 que Contém Domínio de Pirina da Família NLR/metabolismo , Fosforilação/efeitos dos fármacos , Proteínas Serina-Treonina Quinases/metabolismo , Proteínas Proto-Oncogênicas c-akt/metabolismo , Ratos , Sirtuína 1/metabolismo , Tioacetamida/toxicidade
16.
Zhongguo Zhong Yao Za Zhi ; 43(2): 325-331, 2018 Jan.
Artigo em Chinês | MEDLINE | ID: mdl-29552851

RESUMO

Artesunate, which is a widely used anti-malaria medicine, can be made into liposome to overcome its poor bioactivity. Its tissue distribution in rats may change with different dosage forms, which therefore shall be studied after ARS-TPGS-Lipo was injected. Based on this experiment, ARS-TPGS-Lipo and ARS-Lipo were prepared by thin-film hydration method. LC-MS/MS method was used to simultaneously determine ARS and DHA in rat tissues at different time points. The results showed that this method was suitable for the content analysis of ARS and DHA in biological samples. The distribution of ARS and DHA in ARS-TPGS-Lipo, ARS-Lipo and ARS groups were quite different. The content of ARS-TPGS-Lipo in liver was the highest, with significant differences.ARS and DHA contents in ARS group eliminated rapidly. ARS and DHA contents in ARS-Lipo group were higher in liver and spleen, while those in ARS-TPGS-Lipo group significantly increased only in liver (P<0.05).


Assuntos
Artesunato/farmacocinética , Lipossomos , Vitamina E , Animais , Cromatografia Líquida , Ratos , Espectrometria de Massas em Tandem , Distribuição Tecidual
17.
Int J Med Sci ; 15(2): 115-123, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-29333095

RESUMO

Cinnamomum cassia exhibits antioxidative, apoptotic, and cytostatic properties. These activities have been attributed to the modulation of several biological processes and are beneficial for possible pharmaceutical applications. However, the potential of C. cassia in retarding lung adenocarcinoma cells metastasis remains ambiguous. We determined whether C. cassia extract (CCE) reduces metastasis of human lung adenocarcinoma cells. The results showed that CCE treatment (up to 60 µg/mL) for 24 h exhibited no cytotoxicity on the A549 and H1299 cell lines but inhibited the motility, invasiveness, and migration of these cells by repressing matrix metalloproteinase (MMP)-2 and urokinase-type plasminogen activator (u-PA). CCE also impaired cell adhesion to collagen. CCE significantly reduced p-focal adhesion kinase (FAK) Tyr397, p-FAK Tyr925, p-extracellular signal-regulated kinases (ERK)1/2, and Ras homolog gene family (Rho)A expression. CCE showed anti-metastatic activity of A549 and H1299 cells by repressing u-PA/MMP-2 via FAK to ERK1/2 pathways. These findings may facilitate future clinical trials of lung adenocarcinoma chemotherapy to confirm the promising results.


Assuntos
Antineoplásicos Fitogênicos/farmacologia , Cinnamomum aromaticum/química , Neoplasias Pulmonares/tratamento farmacológico , Neoplasias Pulmonares/metabolismo , Extratos Vegetais/farmacologia , Células A549 , Adesão Celular/efeitos dos fármacos , Linhagem Celular Tumoral , Movimento Celular/efeitos dos fármacos , Colágeno , Quinase 1 de Adesão Focal/metabolismo , Gelatina , Humanos , Neoplasias Pulmonares/patologia , Sistema de Sinalização das MAP Quinases/efeitos dos fármacos , Metaloproteinase 2 da Matriz , Fosforilação/efeitos dos fármacos , Ativador de Plasminogênio Tipo Uroquinase/metabolismo , Proteína rhoA de Ligação ao GTP/metabolismo
18.
Int J Mol Med ; 41(4): 2420-2428, 2018 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-29328426

RESUMO

Ginger (Zingiber officinale Roscoe) is a popular Chinese herbal medicine, which is considered to warm the stomach and dispel cold in traditional Chinese medicine. Ginger is widely used to treat stomach disorders, and it has been reported to exhibit antithrombotic activity via the inhibition of platelet aggregation and thromboxane B2 production in vitro. Cardiovascular disease is associated with the aberrant functioning of the heart and circulatory system; the relatively narrow vessels of the circulation are commonly affected and blocked by atherosclerosis, which may result in angina or heart attack. Numerous drugs and medicines are used to treat myocardial infarction; however, they are often associated with numerous side effects. Therefore, it is important to identify substitutive drugs with no unbearable side effects. In the present study, the relaxant effects of ginger crude extract (GCE) were determined on porcine coronary arteries. The DPPH radical scavenging assay, lucigenin­enhanced chemiluminescence assay and western blot analysis were used to individually detect antioxidant assay of ginger extraction or superoxide anion produced by endothelial cells and molecular signaling. The results indicated that GCE induced relaxation of porcine coronary arteries in an endothelium­dependent manner. GCE increased vasoprotection via the suppression of nitric oxide synthase and cyclooxygenase. In addition, GCE possessed antioxidant ability, as determined using 1,1­diphenyl­2­picrylhydrazyl and lucigenin­enhanced chemiluminescence assays. Taken together, the present study demonstrated that GCE exerts marked vasoprotective effects and free radical­scavenging activities in porcine coronary arteries.


Assuntos
Antioxidantes/farmacologia , Vasos Coronários/efeitos dos fármacos , Extratos Vegetais/farmacologia , Vasodilatadores/farmacologia , Zingiber officinale/química , Animais , Antioxidantes/química , Compostos de Bifenilo/metabolismo , Vasos Coronários/fisiologia , Óxido Nítrico/metabolismo , Óxido Nítrico Sintase/metabolismo , Picratos/metabolismo , Extratos Vegetais/química , Transdução de Sinais/efeitos dos fármacos , Guanilil Ciclase Solúvel/metabolismo , Suínos , Vasodilatadores/química
19.
Artigo em Chinês | WPRIM | ID: wpr-707077

RESUMO

Objective To understand the current situation of TCM human resources; To forecast the number of TCM human resources in 2020; To provide data for national scientific management policy. Methods Through Statistical Yearbook of China's Health and Family Planning and Yearbook of Chinese Traditional Medicine, the national human resources data of TCM were collected and compiled from 2010 to 2015, and descriptive analysis and gray model method were used for data analysis. Results The TCM human resources continued to grow, but the growth rate of Chinese pharmacists was slow; the lack of TCM human resources in TCM health institutions; the uneven distribution of human resources in inter-provincial TCM; the number of TCM human resources in 2020 could meet the requirements of TCM 13th Five-year Plan. Conclusion The development of Chinese pharmacists should be paid attention to; the proportion of TCM pharmacists should be balanced; the proportion of TCM human resources in TCM institutions should be improved; scientific planning and the coordinated development of TCM human resources in various regions should be promoted.

20.
Artigo em Chinês | WPRIM | ID: wpr-712446

RESUMO

Evaluation of paper academic influence is an important component part for the scientific and technological evaluation of traditional Chinese medicine,and plays an important role in promoting the scientific and technological innovative development of traditional Chinese medicine. The Traditional Chinese Medicine-Paper Influence Evaluation System (TCM-PIES), which was thus designed according to the existing problems in scientific and technological evaluation of traditional Chinese medicine and in evaluation of papers on traditional Chinese medicine,and the characteristics of academic papers on traditional Chinese medicine by analyzing their data with information technology as its support, is applied in selection of excellent institutions and professional academic interests.

SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA