Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 35
Filtrar
Mais filtros

Base de dados
País/Região como assunto
Tipo de documento
Intervalo de ano de publicação
1.
Age Ageing ; 53(1)2024 01 02.
Artigo em Inglês | MEDLINE | ID: mdl-38251736

RESUMO

BACKGROUND: Fragmentation of services increases health and social care burden as people live longer with higher prevalence of diseases, frailty and dependency. Local evidence for implementing person-centred integrated care is urgently needed to advance practice and policies to achieve healthy ageing. OBJECTIVE: To test the feasibility and impact of World Health Organization's (WHO) Integrated Care for Older People (ICOPE) approach in China. DESIGN: A randomised controlled trial examining the feasibility of implementing ICOPE approach, evaluating its impact on health outcomes and health resource utilisation. SETTING: Primary care setting in urban and suburban communities of Chaoyang District, Beijing, China. SUBJECTS: Community-dwelling older adults screened as at-risk of functional declines and randomised into intervention (537) and control (1611) groups between September 2020 and February 2021. METHODS: A 6-month intervention program following WHO's ICOPE care pathways implemented by integrated care managers compared to standard available care. RESULTS: After 1 to 1 propensity score matching, participants in intervention and control groups (totally 938) had comparable baseline characteristics, demonstrated feasibility of implementing ICOPE with satisfaction by participants (97-99%) and providers (92-93%). All outcomes showed improvements after a 6-month intervention, while statistically significant least-squares mean differences (control-intervention) in vitality (Mini-Nutritional Assessment Short Form to measure vitality, -0.21, 95% CI, -0.40-0.02), mobility (Short Physical Performance Battery to measure mobility, -0.29, 95% CI, -0.44-0.14) and psychological health (Geriatric Depression Scale five items to measure psychological health, 0.09, 95% CI, 0.03-0.14) were observed (P < 0.05). CONCLUSIONS: It is feasible to localise and implement WHO's ICOPE approach in regions with fragmented resources such as China. Preliminary evidence supports its acceptance among key stakeholders and impact on health outcomes.


Assuntos
Sobrecarga do Cuidador , Prestação Integrada de Cuidados de Saúde , Humanos , Idoso , China/epidemiologia , Organização Mundial da Saúde , Procedimentos Clínicos
2.
Eur J Med Chem ; 242: 114669, 2022 Nov 15.
Artigo em Inglês | MEDLINE | ID: mdl-35987019

RESUMO

In the reported mechanisms of reversible photoacidity, protons were dissociated from compounds which contained hydroxyl, indazole or formed hydroxyl via intramolecular hydrogen abstraction under irradiation. Herein, a water-dependent reversible photoacidity (W-RPA) mechanism mediated by a thiadiazoloquinoxaline compound (TQs-Th-PEG5) has been found, in which the proton is not dissociated from TQs-Th-PEG5 itself but from a water locked by TQs-Th-PEG5 under the irradiation of a 660 nm laser. After turning off the laser, the produced acid will disappear quickly. This process is repeatable with no consumption of TQs-Th-PEG5. More importantly, water is indispensable. Furthermore, it is confirmed that there is no other element involved in the process except TQs-Th-PEG5, light and water. Excitingly, W-RPA therapy mediated by TQs-Th-PEG5 nanoparticle exhibits remarkable antitumor effect both in vitro and in vivo, especially in hypoxic tumors with diameter larger than 10 mm owing to its oxygen-independent feature. This study not only discovers a W-RPA mechanism but also provides a novel phototherapy strategy for cancer treatment.


Assuntos
Neoplasias , Água , Indazóis , Neoplasias/tratamento farmacológico , Oxigênio , Fototerapia , Prótons
3.
Front Pharmacol ; 13: 893336, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35774609

RESUMO

Nonalcoholic fatty liver disease (NAFLD) is defined as liver disease in which more than 5% of hepatocytes are steatotic with little or no alcohol consumption. NAFLD includes benign nonalcoholic fatty liver (NAFL) and nonalcoholic steatohepatitis (NASH). Importantly, NASH is an advanced progression of NAFL and is characterized by steatosis, hepatocyte ballooning, lobular inflammation, and fibrosis. However, to date, no drugs specifically targeting NAFLD have been approved by the FDA. Therefore, a new drug or strategy for NAFLD treatment is necessary. However, the pathogenesis of NAFLD is complex and no single-target drugs have achieved the desired results. Noticeably, traditional Chinese medicine formulations are a complex system with multiple components, multiple targets, and synergistic effects between components. The Ganweikang tablet is a compound formula based on traditional Chinese medicine theory and clinical experience. In this study, network pharmacology analysis indicates Ganweikang tablet as a candidate for NAFLD treatment. Furthermore, we evaluated the therapeutic effects of Ganweikang tablet on the NAFL and NASH and tried to clarify the underlying molecular mechanisms in animal models and cell experiments. As expected, Ganweikang tablet was found to improve NAFL and NASH by modulating inflammation, apoptosis, and fatty acid oxidation by inhibiting NFκB, caspase-8, and activating PPARα, which not only indicates that Ganweikang tablet as a drug candidate but also provides a theoretical basis of Ganweikang tablet for the treatment of NAFL and NASH.

4.
Chin Med ; 17(1): 79, 2022 Jun 23.
Artigo em Inglês | MEDLINE | ID: mdl-35733140

RESUMO

BACKGROUND: Rheum tanguticum is utilized as one of the well known traditional Chinese medicine for the treatment of gastrointestinal diseases. Recently, R. tanguticum polysaccharides (RP) have received increasing attention due to their diversely pharmacological activities. Usually, the pharmacological activities of polysaccharides are closely correlated to their metabolic properties from the stomach to the intestine. However, the digestive behavior and fecal fermentation characteristics of RP are unknown, which need to be fully investigated. METHODS: In this study, an in vitro simulated gastrointestinal model was carried out for the investigation of the digestive behavior and fecal fermentation characteristics of RP. The possible changes in physicochemical properties of RP, such as molecular weight, monosaccharide composition, reducing sugar released, chemical composition, pH value, and short chain fatty acids, were determined during in vitro simulated digestion and human fecal fermentation, and its effect on the modulation of gut microbial composition was also evaluated. RESULTS: The results revealed that RP was indigestible under the in vitro simulated digestion conditions according to its stabilities in physicochemical properties. Conversely, the indigestible RP (RPI) could be notably utilized by colonic microbiota in human feces after the in vitro fermentation, especially, at the initial fermentation stage (0-6 h). The fecal fermentation characteristics of RPI were revealed. Results showed that the content of reducing sugars obviously increased from 0.177 to 0.778 mg/mL at the initial stage of fermentation, and its molecular weight notably declined from 2.588 × 105 to 0.828 × 105 Da at the end stage of fermentation. Notably, the utilization of arabinose and galactose in RPI by colonic bacteria was faster than that of galacturonic acid. Besides, RPI could obviously modulate gut microbial composition via promoting the relative abundances of several beneficial bacteria, such as genera Bacteroides, Bifidobacterium, and Megamonas, resulting in the promoted production of several short-chain fatty acids, such as acetic, propionic, and butyric acids. CONCLUSIONS: Results from this study showed that RP was indigestible in the human upper gastrointestinal tract in vitro, but could be easily utilized by colonic microbiota in human feces at the initial stage of fermentation. RP could be used as potential prebiotics for the improvement of intestinal health.

5.
J Healthc Eng ; 2022: 6436256, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35463681

RESUMO

Objective: The detection of Helicobacter pylori mutations that result in antimicrobial resistance can serve as a guideline of antimicrobial therapeutics and probably prevent the failure of clinical treatments. Evaluating the potential of Sanger sequencing to identify genetically resistant determinants in Helicobacter pylori clinical isolates will be important. Methods: 180 cultured strains have been tested using agar dilution for antibiotic susceptibility. NCBI BLAST was used to perform genotypic analysis on the sequencing data. Sanger sequencing was evaluated as an alternative method to detect resistant genotypes and susceptibility. Results: By the conventional E-test, resistance to levofloxacin, amoxicillin, metronidazole, and clarithromycin was 67.3%, 15.1%, 96.4%, and 25.5%, respectively. In contrast, tetracycline had no resistance. Resistance to multiple drugs was observed in 8.12% of the strains. The genetic determinants of resistance to CLA was 23s rRNA, the determinants of resistance to amoxicillin was Pbp1, the determinants of resistance to metronidazole was rdxA, and the determinants of resistance to levofloxacin were GyrA and GyrB. However, there was no association of resistance in tetracycline. Conclusion: We found increased rates of metronidazole antibiotic resistance, highlighting the necessity for alternative therapies and periodic evaluation. Sanger sequencing has proved to be highly effective and holds the potential to be implemented in policies catering to local treatments.


Assuntos
Infecções por Helicobacter , Helicobacter pylori , Amoxicilina/farmacologia , Amoxicilina/uso terapêutico , Antibacterianos/farmacologia , Antibacterianos/uso terapêutico , China , Claritromicina/farmacologia , Claritromicina/uso terapêutico , Resistência Microbiana a Medicamentos , Infecções por Helicobacter/tratamento farmacológico , Infecções por Helicobacter/genética , Helicobacter pylori/genética , Humanos , Levofloxacino/farmacologia , Levofloxacino/uso terapêutico , Metronidazol/farmacologia , Metronidazol/uso terapêutico , Testes de Sensibilidade Microbiana , Tetraciclina/farmacologia , Tetraciclina/uso terapêutico
6.
Front Pharmacol ; 12: 779652, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34950037

RESUMO

Diabetic kidney disease (DKD) is the leading cause of end-stage renal disease and has become a serious public health problem worldwide. Dipeptidyl peptidase-4 (DPP4) inhibitors, an emerging drug for the treatment of diabetes, have been found to have renoprotective effects in addition to glucose-lowering effects and therefore have the potential to be a treatment modality for DKD. Lobeliae Chinensis Herba (LCH), a traditional Chinese herb widely used in the treatment of diabetes, has recently been found to have a hypoglycaemic mechanism related to the inhibition of DPP4. Firstly, analysis of single-cell sequencing data from mouse kidneys in the National Center for Biotechnology Information (NCBI) database revealed that DPP4 was specifically upregulated in DKD podocytes and was associated with podocyte proliferation. Subsequently, the network pharmacology approach was applied to the screening of compounds. Twelve LCH active ingredients targeting DPP4 were extracted from the Traditional Chinese Medicine System Pharmacology (TCMSP) database. In addition, these 12 compounds and DPP4 were molecularly docked to predict the probability of them affecting DPP4 activity. In vitro, Quercetin, Methyl rosmarinate, Kaempferol, Diosmetin and Acacetin were demonstrated to retard podocyte proliferation by inhibiting DPP4 activity and were the top five compounds predicted by molecular docking to be the most likely to affect DPP4 activity. The half maximal inhibitory concentration (IC50) of the five compounds for DPP4 activity were as follows. Acacetin Log IC50 = -8.349, 95%CI (-9.266, -7.265), Diosmtrin Log IC50 = -8.419, 95%CI (-8.889, -7.950), Log IC50 = -8.349, 95%CI (-9.266, -7.265), Methyl rosmarinate Log IC50 = -8.415, 95%CI (-8.751, -8.085), Kaempferol Log IC50 = -8.297, 95%CI (-9.001, -7.615), Quercetin Log IC50 = -8.864, 95%CI (-9.107, -8.615). Finally, Quercetin, Methyl rosmarinate, Kaempferol, Diosmetin and Acacetin qualified for pharmacokinetic and drug similarity screening and have the potential to be the most promising oral agents for the treatment of DKD.

7.
Proc Natl Acad Sci U S A ; 118(43)2021 10 26.
Artigo em Inglês | MEDLINE | ID: mdl-34675076

RESUMO

Myopia is a leading cause of visual impairment and blindness worldwide. However, a safe and accessible approach for myopia control and prevention is currently unavailable. Here, we investigated the therapeutic effect of dietary supplements of omega-3 polyunsaturated fatty acids (ω-3 PUFAs) on myopia progression in animal models and on decreases in choroidal blood perfusion (ChBP) caused by near work, a risk factor for myopia in young adults. We demonstrated that daily gavage of ω-3 PUFAs (300 mg docosahexaenoic acid [DHA] plus 60 mg eicosapentaenoic acid [EPA]) significantly attenuated the development of form deprivation myopia in guinea pigs and mice, as well as of lens-induced myopia in guinea pigs. Peribulbar injections of DHA also inhibited myopia progression in form-deprived guinea pigs. The suppression of myopia in guinea pigs was accompanied by inhibition of the "ChBP reduction-scleral hypoxia cascade." Additionally, treatment with DHA or EPA antagonized hypoxia-induced myofibroblast transdifferentiation in cultured human scleral fibroblasts. In human subjects, oral administration of ω-3 PUFAs partially alleviated the near-work-induced decreases in ChBP. Therefore, evidence from these animal and human studies suggests ω-3 PUFAs are potential and readily available candidates for myopia control.


Assuntos
Ácidos Graxos Ômega-3/administração & dosagem , Miopia/prevenção & controle , Administração Oral , Animais , Transdiferenciação Celular , Células Cultivadas , Corioide/irrigação sanguínea , Suplementos Nutricionais , Modelos Animais de Doenças , Progressão da Doença , Ácidos Docosa-Hexaenoicos/administração & dosagem , Ácido Eicosapentaenoico/administração & dosagem , Cobaias , Humanos , Hipóxia/dietoterapia , Hipóxia/fisiopatologia , Hipóxia/prevenção & controle , Camundongos , Miofibroblastos/patologia , Miopia/dietoterapia , Miopia/fisiopatologia , Adulto Jovem
8.
Int J Mol Sci ; 22(4)2021 Feb 20.
Artigo em Inglês | MEDLINE | ID: mdl-33672524

RESUMO

Human bone marrow stem cells (HBMSCs) are isolated from the bone marrow. Stem cells can self-renew and differentiate into various types of cells. They are able to regenerate kinds of tissue that are potentially used for tissue engineering. To maintain and expand these cells under culture conditions is difficult-they are easily triggered for differentiation or death. In this study, we describe a new culture formula to culture isolated HBMSCs. This new formula was modified from NCDB 153, a medium with low calcium, supplied with 5% FBS, extra growth factor added to it, and supplemented with N-acetyl-L-cysteine and L-ascorbic acid-2-phosphate to maintain the cells in a steady stage. The cells retain these characteristics as primarily isolated HBMSCs. Moreover, our new formula keeps HBMSCs with high proliferation rate and multiple linage differentiation ability, such as osteoblastogenesis, chondrogenesis, and adipogenesis. It also retains HBMSCs with stable chromosome, DNA, telomere length, and telomerase activity, even after long-term culture. Senescence can be minimized under this new formulation and carcinogenesis of stem cells can also be prevented. These modifications greatly enhance the survival rate, growth rate, and basal characteristics of isolated HBMSCs, which will be very helpful in stem cell research.


Assuntos
Antioxidantes/farmacologia , Cálcio/farmacologia , Senescência Celular , Meios de Cultura/química , Células-Tronco Mesenquimais/citologia , Antígenos CD/metabolismo , Biomarcadores/metabolismo , Diferenciação Celular/efeitos dos fármacos , Linhagem da Célula/efeitos dos fármacos , Proliferação de Células/efeitos dos fármacos , Separação Celular , Forma Celular/efeitos dos fármacos , Células Cultivadas , Senescência Celular/efeitos dos fármacos , Dano ao DNA , Humanos , Células-Tronco Mesenquimais/efeitos dos fármacos , Células-Tronco Mesenquimais/metabolismo , Osteoblastos/citologia , Osteoblastos/efeitos dos fármacos , Osteoblastos/metabolismo , Telomerase/metabolismo , Homeostase do Telômero , Proteína 1 de Ligação à Proteína Supressora de Tumor p53/metabolismo
10.
Nanomedicine (Lond) ; 15(21): 2041-2052, 2020 09.
Artigo em Inglês | MEDLINE | ID: mdl-32867583

RESUMO

Aim: The present study aims to apply the facile liquid-phase exfoliation (LPE) strategy to fabricate 2D organic materials and thus to broaden the family of biocompatible and multifunctional 2D materials. Materials & methods: 2D material-organic melanin and cellulose nanosheets were synthesized from black sesame hull using LPE. Photoluminescence and photothermal properties of the nanosheets were assessed, as well as stability and cell killing ability. Results: The prepared 2D nanoplatform exhibited broad and multiple photoluminescent emission bands. It also demonstrated efficient photothermal cancer therapy with excellent biocompatibility. Conclusion: The present study could open an avenue in exfoliating organic materials using the LPE strategy. This could make the fabrication of multifunctional 2D organic materials more efficient and broaden the family of biocompatible 2D nanomaterials.


Assuntos
Nanoestruturas , Sesamum , Humanos , Fototerapia , Terapia Fototérmica
11.
Int J Biol Macromol ; 163: 1369-1374, 2020 Nov 15.
Artigo em Inglês | MEDLINE | ID: mdl-32758598

RESUMO

Xylan and pectin are major structural components of plant cell walls. There are two independent catabolic pathways for xylan and pectin. UxaE bridges these two pathways by reversibly epimerizing D-fructuronate and D-tagaturonate. The crystal structure of UxaE from Cohnella laeviribosi (ClUxaE) shows a core scaffold of TIM-barrel with a position-changing divalent metal cofactor. ClUxaE has the flexible metal-coordination loop to allow the metal shift and the extra domains to bind a phosphate ion in the active site, which are important for catalysis and substrate specificity. Elucidation of the structure and mechanism of ClUxaE will assist in understanding the catalytic mechanism of UxaE family members, which are useful for processing both xylan and pectin-derived carbohydrates for practical and industrial purposes, including the transformation of agricultural wastes into numerous valuable products.


Assuntos
Bacillales/química , Catálise/efeitos dos fármacos , Racemases e Epimerases/química , Açúcares/química , Carboidratos/química , Domínio Catalítico/efeitos dos fármacos , Metais/química , Pectinas/química , Fosfatos/química , Especificidade por Substrato , Xilanos/química
12.
Biomolecules ; 10(4)2020 04 16.
Artigo em Inglês | MEDLINE | ID: mdl-32316306

RESUMO

Green tea drinking can ameliorate postmenopausal osteoporosis by increasing the bone mineral density. (-)-Epigallocatechin-3-gallate (EGCG), the abundant and active compound of tea catechin, was proven to be able to reduce bone loss and ameliorate microarchitecture in female ovariectomized rats. EGCG can also enhance the osteogenic differentiation of murine bone marrow mesenchymal stem cells and inhibit the osteoclastogenesis in RAW264.7 cells by modulation of the receptor activator of nuclear factor-kB (RANK)/RANK ligand (RANKL)/osteoprotegrin (OPG) (RANK/RANKL/OPG) pathway. Our previous study also found that EGCG can promote bone defect healing in the distal femur partially via bone morphogenetic protein-2 (BMP-2). Considering the osteoinduction property of BMP-2, we hypothesized that EGCG could accelerate the bone healing process with an increased expression of BMP-2. In this manuscript, we studied whether the local use of EGCG can facilitate tibial fracture healing. Fifty-six 4-month-old rats were randomly assigned to two groups after being weight-matched: a control group with vehicle treatment (Ctrl) and a study group with 10 µmol/L, 40 µL, EGCG treatment (EGCG). Two days after the operation, the rats were treated daily with EGCG or vehicle by percutaneous local injection for 2 weeks. The application of EGCG enhanced callus formation by increasing the bone volume and subsequently improved the mechanical properties of the tibial bone, including the maximal load, break load, stiffness, and Young's modulus. The results of the histology and BMP-2 immunohistochemistry staining showed that EGCG treatment accelerated the bone matrix formation and produced a stronger expression of BMP-2. Taken together, this study for the first time demonstrated that local treatment of EGCG can accelerate the fracture healing process at least partly via BMP-2.


Assuntos
Catequina/análogos & derivados , Consolidação da Fratura/efeitos dos fármacos , Chá/química , Animais , Fenômenos Biomecânicos , Calo Ósseo/diagnóstico por imagem , Calo Ósseo/fisiopatologia , Catequina/farmacologia , Catequina/uso terapêutico , Masculino , Ratos Sprague-Dawley , Tíbia/diagnóstico por imagem , Tíbia/efeitos dos fármacos , Tíbia/patologia , Tíbia/fisiopatologia , Fraturas da Tíbia/diagnóstico por imagem , Fraturas da Tíbia/tratamento farmacológico , Fraturas da Tíbia/patologia , Fraturas da Tíbia/fisiopatologia , Microtomografia por Raio-X
13.
Int J Biol Macromol ; 145: 611-619, 2020 Feb 15.
Artigo em Inglês | MEDLINE | ID: mdl-31887373

RESUMO

In the present study, freeze drying, hot-air drying, vacuum drying, and microwave drying at the microwave powers of 400, 600, and 800 W, respectively, were utilized to dry loquat leaves for evaluating the effects of different drying techniques on the physicochemical structures and bioactivities of polysaccharides extracted from loquat leaves (LLPs). Results demonstrated that the physicochemical structures and bioactivities of LLPs significantly affected by different drying techniques. The degrees of esterification, molar ratios of constituent monosaccharides, contents of uronic acids, apparent viscosities, and molecular weights of LLPs were varied by different drying techniques. Additionally, LLPs, particularly LLP-M4 which extracted from loquat leaves prepared by microwave drying at the power of 400 W, exerted remarkable in vitro binding capacities, strong inhibitory effects on α-amylase and α-glucosidase, and obvious antioxidant activities. Results indicated that the microwave drying could be an efficient drying technique before extraction of bioactive LLPs, and LLPs had great potential applications in the functional food and pharmaceutical industries.


Assuntos
Antioxidantes/química , Eriobotrya/química , Polissacarídeos/química , alfa-Amilases/antagonistas & inibidores , Antioxidantes/farmacologia , Dessecação , Inibidores de Glicosídeo Hidrolases/química , Inibidores de Glicosídeo Hidrolases/isolamento & purificação , Inibidores de Glicosídeo Hidrolases/farmacologia , Peso Molecular , Extratos Vegetais/química , Extratos Vegetais/farmacologia , Folhas de Planta/química , Polissacarídeos/isolamento & purificação , Polissacarídeos/farmacologia , alfa-Glucosidases/efeitos dos fármacos
14.
Artigo em Inglês | MEDLINE | ID: mdl-31885663

RESUMO

Cannabis sativa L. has been utilized for a long time as a traditional herbal medicine in Korea. Dry fruits, achenes, each containing a single seed of Cannabis, are currently prescribed as Ma In (Cannabis Semen), a laxative. As each achene is enclosed by a bract, in which tetrahydrocannabinol (THC), the main psychological active compound in Cannabis is synthesized; achene is easily contaminated by THC from bract remnants. Therefore, it is safer to harvest achenes from Cannabis with a low THC content. Seeds of hemp, a low THC Cannabis, were recently classified as possible sources of new pharmacologically active compounds. Thus, a proper method to select appropriate Cannabis plants with low THC among cultivars in South Korea for medicinal purpose is necessary. As a result of cross-selection, Cannabis L. cultivar "Cheungsam" (CH) with the lowest THC content among cultivars cultivated in South Korea has been developed. In this study, we developed two DNA markers to reliably discriminate CH from other local cultivars with higher THC contents. We developed primer sets CHF3/CHR2 to amplify the 642 bp DNA marker of CH based on differences in the nucleotide sequences of the THCA synthase gene, which encodes a key enzyme in THC synthesis. We then developed a CHF1/CHR3 primer set to amplify the 401 bp DNA marker of CH based on the differences in both the content of very long chain fatty acids (VLCFs) and the sequence of the putative 3-ketoacyl-CoA synthase (KCS) gene encoding enzymes synthesizing VLCFs among local cultivars.

15.
Arch Gerontol Geriatr ; 83: 7-12, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-30921603

RESUMO

BACKGROUND: Frailty, featured by the presence of fatigue, weight loss, decrease in grip strength, decline gait speed and reduced activities substantially increase the risk of falls, disability, hospitalizations, and mortality of older people. Nutritional supplementation and resistance exercise may improve muscle function and reverse frailty status. OBJECTIVE: To evaluate whether whey protein supplements can improve muscle function of frail older people in addition to resistance exercise. METHODS: 115 community-dwelling older adults who met the Fried's criteria for frailty from four hospitals' out-patients clinic in Beijing, China completed the study. It's a case-control study which whey protein was used as daily supplementation for 12 weeks for active group and regular resistance exercise for active group and control group. Handgrip strength, gait speed, chair-stand test, balance score, and SPPB score were compared in both groups during the 12-week follow-up. RESULTS: Overall, 115 subjects were enrolled for study with 66 in active group and 49 in control group. Handgrip strength, gait speed, and chair-stand time were all significantly improved in both groups with significant between-group differences. The active group improved significantly in handgrip strength compared with the control group, which between-group effect (95% confidence interval) for female was 0.107 kg (0.066-0.149), p = 0.008 and for male was 0.89 kg (0.579-1.201), p = 0.007. For chair-stand time, between-group effect (95% confidence interval) was -2.875 s (-3.62 to -2.124), p = 0.004 and for gait speed, between-group effect (95% confidence interval) was 0.109 m/s (0.090 to 0.130), p = 0.003. CONCLUSIONS: The 12-week intervention of whey protein oral nutritional supplement revealed significant improvements in muscle function among the frailty elderly besides aiding with resistance exercise. These results warrant further investigations into the role of a multi-modal supplementation approach which could prevent adverse outcomes among frailty elderly at risk for various disabilities.


Assuntos
Suplementos Nutricionais , Idoso Fragilizado , Sarcopenia/fisiopatologia , Proteínas do Soro do Leite/administração & dosagem , Idoso , Idoso de 80 Anos ou mais , Estudos de Casos e Controles , China , Feminino , Marcha , Força da Mão , Humanos , Vida Independente , Masculino , Equilíbrio Postural
16.
Phytomedicine ; 55: 165-171, 2019 Mar 01.
Artigo em Inglês | MEDLINE | ID: mdl-30668426

RESUMO

BACKGROUND: Previously, we found that (-)-epigallocatechin-3-gallate (EGCG) enhanced osteogenic differentiation of murine bone marrow mesenchymal stem cells by increasing the mRNA expression of osteogenesis-related genes, alkaline phosphatase activity and eventually mineralization. We further found EGCG supplementation preserved bone mass and microarchitecture in female rats during estrogen deficiency in the proximal tibia and lumbar spine at least in part by increasing bone morphogenetic protein-2 (BMP2). BMP2 can enhance de novo bone formation. PURPOSE: In this study, we evaluate the effect of local EGCG application in de novo bone formation in bone defect healing. METHODS: Twenty-four rats aged 4 months were weight-matched and randomly allocated to 2 groups: defect control with vehicle treatment (control) and defect with 10 µM EGCG treatment (EGCG). Daily vehicle and EGCG were applied locally by percutaneous local injection 2 days after defect creation for 2 weeks. Four weeks after treatment, animals were sacrificed for micro-computed tomography (µ-CT) and biomechanical analysis. RESULTS: Local EGCG at femoral defect can enhance de novo bone formation by increasing bone volume and subsequently improve mechanical properties including max load, break point, stiffness, area under the max load curve, area under the break point curve and ultimate stress. CONCLUSIONS: Local EGCG may enhance bone defect healing via at least partly by the de novo bone formation of BMP-2.


Assuntos
Catequina/análogos & derivados , Fêmur/efeitos dos fármacos , Cicatrização/efeitos dos fármacos , Animais , Fenômenos Biomecânicos , Conservadores da Densidade Óssea/farmacologia , Proteína Morfogenética Óssea 2/metabolismo , Catequina/farmacologia , Fêmur/diagnóstico por imagem , Fêmur/lesões , Masculino , Ratos Sprague-Dawley , Microtomografia por Raio-X
17.
Redox Biol ; 18: 124-137, 2018 09.
Artigo em Inglês | MEDLINE | ID: mdl-30014902

RESUMO

Oxidative stress is a critical factor in nonalcoholic fatty liver disease pathogenesis. MicroRNA-200a (miR-200a) is reported to target Kelch-like ECH-associated protein 1 (Keap1), which regulates nuclear factor erythroid 2-related factor 2 (Nrf2) anti-oxidant pathway. Polydatin (3,4',5-trihydroxy-stilbene-3-ß-D-glucoside), a polyphenol found in the rhizome of Polygonum cuspidatum, have anti-oxidative, anti-inflammatory and anti-hyperlipidemic effects. However, whether miR-200a controls Keap1/Nrf2 pathway in fructose-induced liver inflammation and lipid deposition and the blockade of polydatin are still not clear. Here, we detected miR-200a down-regulation, Keap1 up-regulation, Nrf2 antioxidant pathway inactivation, ROS-driven thioredoxin-interacting protein (TXNIP) over-expression, NOD-like receptor (NLR) family, pyrin domain containing 3 (NLRP3) inflammasome activation and dysregulation of peroxisome proliferator activated receptor-α (PPAR-α), carnitine palmitoyl transferase-1 (CPT-1), sterol regulatory element binging protein 1 (SREBP-1) and stearoyl-CoA desaturase-1 (SCD-1) in rat livers, BRL-3A and HepG2 cells under high fructose induction. Furthermore, the data from the treatment or transfection of miR-200a minic, Keap1 and TXNIP siRNA, Nrf2 activator and ROS inhibitor demonstrated that fructose-induced miR-200a low-expression increased Keap1 to block Nrf2 antioxidant pathway, and then enhanced ROS-driven TXNIP to activate NLRP3 inflammasome and disturb lipid metabolism-related proteins, causing inflammation and lipid deposition in BRL-3A cells. We also found that polydatin up-regulated miR-200a to inhibit Keap1 and activate Nrf2 antioxidant pathway, resulting in attenuation of these disturbances in these animal and cell models. These findings provide a novel pathological mechanism of fructose-induced redox status imbalance and suggest that the enhancement of miR-200a to control Keap1/Nrf2 pathway by polydatin is a therapeutic strategy for fructose-associated liver inflammation and lipid deposition.


Assuntos
Anti-Inflamatórios/uso terapêutico , Frutose/efeitos adversos , Glucosídeos/uso terapêutico , Inflamação/induzido quimicamente , Inflamação/prevenção & controle , Fígado/efeitos dos fármacos , MicroRNAs/imunologia , Estilbenos/uso terapêutico , Animais , Antioxidantes/uso terapêutico , Linhagem Celular , Medicamentos de Ervas Chinesas/uso terapêutico , Inflamação/imunologia , Inflamação/patologia , Proteína 1 Associada a ECH Semelhante a Kelch/imunologia , Lipídeos/análise , Lipídeos/imunologia , Fígado/imunologia , Fígado/patologia , Masculino , Fator 2 Relacionado a NF-E2/imunologia , Estresse Oxidativo/efeitos dos fármacos , Ratos Sprague-Dawley , Transdução de Sinais/efeitos dos fármacos
18.
Zhen Ci Yan Jiu ; 42(2): 168-72, 2017 Apr 25.
Artigo em Chinês | MEDLINE | ID: mdl-29071968

RESUMO

OBJECTIVE: To observe the clinical effect of vitalstim electroacupuncture (EA) combined with swallowing rehabilitation training in the treatment of stroke patients with dysphagia. METHODS: A total of 80 stroke patients with dysphagia were randomized into treatment and control groups (n=40 in each group). Patients of the control group were treated by regular medication for anti-platelet aggregation and anti-coagulation, lipid-lowering, neuroprotection, blood glucose control and blood pressure control, etc. and swallowing function rehabilitation training, and those of the treatment group treated by EA stimulation of Fengchi (GB 20), Jinjin (EX-HN 12) and Yuye (EX-HN 13) with a Vitalstim Electrostimulator and manual acupuncture stimulation of Lianquan (CV 23), Tiantu (CV 22) in combination with regular medication plus swallowing function training as those mentioned in the control group. The EA and manual acupuncture stimulation treatment was conducted once daily, 6 times a week and 4 weeks altogether. The therapeutic effect was assessed by using Kubota swallowing ability test (6 levels), dysphagia subscale (0-6 scores) of the neurological deficit degrees, videofluorography (VFG) assessment (markedly effective, effective and invalid, for evaluating the function and symmetry state of the swallowing movements), and the MOS Item Short Form Health Survey (SF-36, 8 minor items of two major aspects in physiological function, mental health, emotional function, social function and overall health) for assessing the patients' daily-life quality. RESULTS: After the treatment, the dysphagia score of the treatment group was signi-ficantly lower than that of the control group (P<0.05). VFG outcomes showed that, of the two 40 patients in the control and treatment groups, 16 and 23 experienced a marked improvement, 20 and 15 were effective, 4 and 2 were ineffective, with the markedly effective rate being 40.0% and 57.5%, respectively. The daily-life quality scores for physiological function, mental health, emotional function, social function and overall health were all notably increased after the treatment in both groups, particularly in the treatment group (P<0.05). The therapeutic effects of the treatment group were remarkably superior to those of the control group in improving dysphagia (showed by dysphagia score and VFG outcomes) and life quality. CONCLUSIONS: EA treatment combined with swallowing function rehabilitation training is effective in improving swallowing ability and daily-life quality in stroke patients with dysphagia.


Assuntos
Transtornos de Deglutição/reabilitação , Transtornos de Deglutição/terapia , Eletroacupuntura , Acidente Vascular Cerebral/complicações , Pontos de Acupuntura , Idoso , Terapia Combinada , Transtornos de Deglutição/etiologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Resultado do Tratamento
19.
Zhen Ci Yan Jiu ; 42(6): 518-21, 2017 Dec 25.
Artigo em Chinês | MEDLINE | ID: mdl-29318859

RESUMO

OBJECTIVE: To observe the effect of "Xingnao Kaiqiao" acupuncture(acupuncture technique for restoring consciousness) combined with hyperbaric oxygen in patients with hypoxic ischemic encephalopathy and assess its influence on blood rheology. METHODS: Forty patients with hypoxic ischemic encephalopathy were randomly divided into treatment group and control group with 20 cases in each group. The treatment group received "Xingnao Kaiqiao" acupuncture combined with hyperbaric oxygen, and the control group received hyperbaric oxygen only. The two groups of patients were treated once per day for 6 consecutive days, which consisted of one course of treatment, and the total treatment lasted for four courses. Before and after treatment, the patients underwent the mini mental state examination (MMSE) to evaluate cognitive function and the barthel index score for activities of daily living. The changes of whole blood viscosity, plasma viscosity, and erythrocyte aggregation index were determined. RESULTS: After treatment, both the treatment and control groups showed improvements in cognitive function,activities of daily living, and blood rheology compared with those before treatment (P<0.05). However, these improvements in the treatment group were significantly greater than those in the control group (P<0.05). CONCLUSIONS: Application of "Xingnao Kaiqiao" acupuncture combined with hyperbaric oxygen in patients with hypoxic ischemic encephalopathy can result in an integrated curative effect, a significant improvement in the blood rheology indexes, and promote the recovery of brain cells.


Assuntos
Terapia por Acupuntura , Oxigenoterapia Hiperbárica , Hipóxia-Isquemia Encefálica , Atividades Cotidianas , Estado de Consciência , Humanos , Reologia
20.
Menopause ; 24(6): 617-623, 2017 06.
Artigo em Inglês | MEDLINE | ID: mdl-27922941

RESUMO

OBJECTIVE: Glucosamine (GlcN), which has been reported to induce insulin resistance (IR), is a popular nutritional supplement used to treat osteoarthritis in menopausal women. We previously demonstrated that GlcN treatment caused IR in ovariectomized rats by reducing the expression of glucose transport protein subtype 4 (GLUT-4) in skeletal muscle. In the present study, we hypothesized that endurance exercise training can reverse GlcN-induced IR. METHODS: Fifty female rats were randomly divided into five groups with 10 rats in each group: (1) sham-operated group; (2) sham-operated group with GlcN treatment for 14 days; (3) ovariectomy (OVX) group; (4) OVX with GlcN treatment; and (5) OVX with GlcN treatment followed by exercise training (running program) for 8 weeks. RESULTS: Fasting plasma glucose increased in the OVX + GlcN group, and fasting plasma insulin and the homeostasis model assessment-insulin resistance (HOMA-IR) were significantly higher only in this group. After the rats received exercise training for 8 weeks, no increase in the fasting plasma glucose, insulin, or HOMA-IR was observed. In an intraperitoneal glucose tolerance test, the plasma glucose, plasma insulin, HOMA-IR, and glucose-insulin index were significantly elevated only in the OVX with GlcN treatment group. However, the plasma glucose, plasma insulin, HOMA-IR, and glucose-insulin index decreased after exercise training for 8 weeks, implying that GlcN-induced IR in OVX rats could be reversed through exercise. A histological analysis revealed that exercise training can reduce islet hypertrophy and maintain GLUT-4 in skeletal muscle. CONCLUSIONS: Exercise training can alleviate IR in OVX rats treated with GlcN. Islet hyperplasia was subsequently prevented. Preserving GLUT-4 expression may be one of the mechanisms by which exercise prevents IR.


Assuntos
Glucosamina/farmacologia , Resistência à Insulina/fisiologia , Ovariectomia , Condicionamento Físico Animal/fisiologia , Animais , Glicemia/análise , Jejum , Feminino , Teste de Tolerância a Glucose , Transportador de Glucose Tipo 4/análise , Hipertrofia , Insulina/sangue , Ilhotas Pancreáticas/efeitos dos fármacos , Ilhotas Pancreáticas/patologia , Músculo Esquelético/química , Músculo Esquelético/efeitos dos fármacos , Ratos , Ratos Sprague-Dawley
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA