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1.
Biomed Res Int ; 2022: 1093945, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35915803

RESUMO

The transcription factor Wilms' tumor 1 (WT1) is involved in development, tissue homeostasis, and disease. However, the exact roles and the mechanisms of WT1 in renal carcinoma are not well understood. Therefore, in this study, we evaluated the ability of WT1 to block proliferation in renal carcinoma cells in vitro. Experimental analysis showed that WT1 overexpression inhibited the proliferation of renal carcinoma A498 cells and promoted arrest at the G2/M checkpoint. RNA-Seq identified differentially expressed genes, including IL-24, related to both the cell proliferation and the cell cycle. WT1 overexpression upregulated IL-24 expression, and IL-24 overexpression induced G2/M arrest. ChIP-Seq identified JUN as a direct target of WT1 in A498 cells, in which positive regulation was shown by RT-qPCR. It has been shown that the transcription factor JUN can regulate IL-24 expression, and therefore, we hypothesize that WT1 might regulate the IL-24 through JUN. Furthermore, analysis based on TCGA datasets showed that the expression of WT1-regulated genes, including TXNIP and GADD45A, was significantly correlated with the stage and histological grade of tumors, with high levels linked to favorable prognoses. Our results demonstrated that the overexpression of WT1 upregulates IL-24, leading to G2/M checkpoint arrest to reduce proliferation. These results indicate that regulation of IL-24 by WT1 inhibits proliferation and may represent a potential target for treating renal carcinoma.


Assuntos
Carcinoma de Células Renais , Interleucinas/metabolismo , Neoplasias Renais , Tumor de Wilms , Apoptose/genética , Carcinoma de Células Renais/genética , Linhagem Celular Tumoral , Proliferação de Células/genética , Pontos de Checagem da Fase G2 do Ciclo Celular/genética , Regulação Neoplásica da Expressão Gênica , Humanos , Neoplasias Renais/genética , Neoplasias Renais/patologia , Fatores de Transcrição/genética , Proteínas WT1/genética , Tumor de Wilms/genética
2.
Community Dent Health ; 38(2): 105-111, 2021 May 28.
Artigo em Inglês | MEDLINE | ID: mdl-33539049

RESUMO

INTRODUCTION: Oral disease is a widespread problem in Nepal. However, up-to-date information on oral health is limited and oral health initiatives may be shaped by assumptions about insufficient oral health knowledge. Furthermore, the influence of socio-demographic factors on oral health in Nepal remains unclear. This study aims to explore the relationship between demographic background and oral health knowledge, attitudes and behaviors in rural Nepal. METHODS: Secondary analysis of data from a community-based survey on oral health knowledge, beliefs, practices, and access to care among residents ages 12 and above across 4 rural villages in Nepal's Kaski District (Total number = 3,243). Chi-square tests were performed to examine associations among oral health knowledge, attitudes and behaviors and demographic characteristics. RESULTS: Participants reported a baseline knowledge of oral health; 92.4% knew about the recommended tooth-brushing regimen. Participants with higher education and younger age demonstrated better oral health knowledge. Misconceptions about dental treatment causing blindness (23.1%), deafness (11.6%), and mental health problems (14.9%) were reported across all groups. CONCLUSION: Numerous factors besides knowledge likely determine individual oral health behavior. Future interventions should consider community-based outreach programs and dental care delivery through community Health Posts to build trust in dental care, build on existing knowledge and community experiences, and improve access to preventative care. Up-to-date understanding of oral health knowledge and practices and sociocultural influences on oral health behavior will better focus interventions and policy decisions.


Assuntos
Saúde Bucal , População Rural , Criança , Conhecimentos, Atitudes e Prática em Saúde , Humanos , Nepal , Inquéritos e Questionários , Escovação Dentária
3.
Zhonghua Jie He He Hu Xi Za Zhi ; 43(7): 571-576, 2020 Jul 12.
Artigo em Chinês | MEDLINE | ID: mdl-32629556

RESUMO

Objective: To explore the efficacy and safety of the covered airway stent loaded with (125)I seeds for the treatment of tracheal adenoid cystic carcinoma (TACC). Methods: We retrospectively reviewed the clinical data from 8 patients with TACC who had received placement of the covered stent loaded with (125)I seeds between December 2014 and July 2017 in the endoscopic center of the Second Affiliated Hospital of Xiamen Medical College. We compared the difference in the dyspnea index, the diameter of the airway lumen, and the lesion surrounding the airway wall before and after treatment. The complications were also recorded during follow-up. Results: Eight patients underwent successful placement of a total of 11 radioactive stents (2 straight-type stents, 2 L-shape stents, and 7 Y-shape stents, all loaded a total of 243 radioactive particles). Displacement of stents took place within 2 weeks in 2 patients, who were managed with re-stenting and fixation. No further displacement occurred during follow-up. The median time to stent removal was 2.9(interquartile range: 2.3,3.0) months. After stent placement, the dyspnea index was significantly decreased compared with pre-treatment level (mean: 0.1 vs. 3.4, t=8.881, P<0.001). Bronchoscopic re-assessment showed that the residual tumor within the airway was detected in only one patient and that the tumor completely disappeared in the remaining 7 patients. Treatment with stents loaded with radioactive particles yielded smooth and pale airway mucosa with formation of partial scar formation. Chest computed tomography re-assessment demonstrated significantly larger luminal diameter than that before treatment (mean: 13.1 mm vs. 3.3 mm, t=-7.839, P<0.001). The airway wall thickness was notably reduced after treatment (mean: 4.3 mm vs. 14.4 mm, t=7.620, P<0.001). The lesions surrounding the airway wall completely disappeared in 7 patients and decreased for more than 50% in a single patient. The median duration of follow-up was 28.0(interquartile range: 24.8,31.5) months. Recurrence of tumor was documented in a single case within 2 years. Six patients did not experience recurrence within the 2-year follow-up period. No death or severe complications were recorded during follow-up. Conclusion: The (125)I radioactive stent is effective for dilating the stenotic airway and ameliorating the symptoms, and thus might be an effective and safe method for the treatment of TACC. Further studies that explore the efficacy of stents loaded with (125)I particles are needed.


Assuntos
Carcinoma Adenoide Cístico/patologia , Carcinoma Adenoide Cístico/cirurgia , Radioisótopos do Iodo , Stents , Neoplasias da Traqueia/patologia , Neoplasias da Traqueia/cirurgia , Estenose Traqueal/terapia , Obstrução das Vias Respiratórias/etiologia , Carcinoma Adenoide Cístico/complicações , Humanos , Recidiva Local de Neoplasia , Estudos Retrospectivos , Neoplasias da Traqueia/complicações , Resultado do Tratamento
4.
Vaccine ; 36(18): 2462-2470, 2018 04 25.
Artigo em Inglês | MEDLINE | ID: mdl-29602704

RESUMO

Tuberculosis (TB) infection affects a quarter of the global population resulting in a large burden of TB disease and mortality. The long-term control of TB requires vaccines with greater efficacy and durability than the current Mycobacterium bovis Bacille Calmette-Guérin (BCG). Pulmonary immunization may increase and prolong immunity at the site of Mycobacterium tuberculosis infection. We have investigated recombinant influenza A viruses (rIAVs) expressing the p25 CD4+ T cell epitope of M. tuberculosis Ag85B240-254 for single and sequential immunization against M. tuberculosis infection. Intranasal immunization with single dose of rIAV X31 (H3N2 strain) expressing the p25 epitope (X31-p25), induced p25-specific CD4+ T cells and conferred protection against aerosol delivery of M. tuberculosis infection in the lungs. To enhance this effect, prime-boost immunization with hetero-subtypic rIAVs was examined. Sequential immunization with X31-p25 and a second rIAV, PR8 (H1N1 strain) expressing the same epitope (PR8-p25), increased the frequency of p25-specific IFN-γ T cell responses and polyfunctional CD4+ T cells producing IFN-γ, IL-2, and TNF, compared to immunization with each rIAV alone. This combination resulted in protection against M. tuberculosis in both the lungs and spleen. Therefore, our study revealed that rIAV is not only an efficient vector to induce protective immunity in the lungs, but also has a potential use for sequential immunization with heterologous rIAV to boost the immunogenicity and improve the protection against M. tuberculosis.


Assuntos
Aciltransferases/imunologia , Administração Intranasal , Antígenos de Bactérias/imunologia , Proteínas de Bactérias/imunologia , Portadores de Fármacos , Vírus da Influenza A/genética , Mycobacterium tuberculosis/imunologia , Vacinas contra a Tuberculose/imunologia , Tuberculose Pulmonar/prevenção & controle , Aciltransferases/genética , Animais , Antígenos de Bactérias/genética , Proteínas de Bactérias/genética , Linfócitos T CD4-Positivos/imunologia , Citocinas/metabolismo , Modelos Animais de Doenças , Epitopos de Linfócito T/genética , Epitopos de Linfócito T/imunologia , Feminino , Esquemas de Imunização , Camundongos Endogâmicos C57BL , Mycobacterium tuberculosis/genética , Resultado do Tratamento , Vacinas contra a Tuberculose/administração & dosagem , Vacinas contra a Tuberculose/genética , Vacinas Sintéticas/administração & dosagem , Vacinas Sintéticas/genética , Vacinas Sintéticas/imunologia
5.
Eur J Neurol ; 23(3): 494-500, 2016 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-26801969

RESUMO

BACKGROUND AND PURPOSE: Recent large series studies have demonstrated that dehydration is common amongst stroke subjects and is associated with poor outcome. However, the effects of hydration status on the development of collaterals have never been discussed. In this study, the hypothesis that hydration status is an important factor for developing collaterals after acute middle cerebral artery (MCA) infarction was tested. METHODS: Eighty-seven patients with acute infarction due to occlusion of the MCA were enrolled. Two collateral markers, posterior cerebral artery (PCA) laterality and fluid-attenuated inversion recovery hyperintense vessels (HVs) were assessed from magnetic resonance imaging. Dehydration status was defined by a nitrogen to creatinine ratio ≧ of 15. The associations between dehydration status and the development of collaterals were estimated. RESULTS: Sixty-one of 87 patients (70.1%) were identified as dehydrated. The development of PCA laterality and HVs shows a significant difference between dehydrated and euhydrated patients. A serum nitrogen to creatinine ratio <15, diastolic blood pressure and the presence of a dense MCA on computed tomography were significantly associated with the development of PCA laterality. A serum nitrogen to creatinine ratio <15, the initial National Institutes of Health Stroke Scale score, the presence of a dense MCA and calcifications of the internal carotid artery on computed tomography were significantly associated with the development of HVs. Dehydration remained an independent negative predictor for the development of PCA laterality and HVs in the multivariate analysis. CONCLUSIONS: Hydration status is associated with the development of collateral flow after acute MCA occlusion. This preliminary study provides an imaging clue that hydration status and early hydration therapy could be important for acute stroke management.


Assuntos
Circulação Colateral/fisiologia , Desidratação/complicações , Infarto da Artéria Cerebral Média/fisiopatologia , Sistema de Registros , Idoso , Idoso de 80 Anos ou mais , Desidratação/sangue , Feminino , Humanos , Infarto da Artéria Cerebral Média/terapia , Masculino , Pessoa de Meia-Idade , Artéria Cerebral Posterior/diagnóstico por imagem , Estudos Retrospectivos
6.
Clin Microbiol Infect ; 21(11): 1018.e1-8, 2015 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-26148466

RESUMO

We investigated the clinical and molecular characteristics of Candida albicans bloodstream infection (BSI) in children from a tertiary-level medical centre in Taiwan over a 9-year period from January 2003 to December 2011. We performed multilocus sequence typing (MLST) to investigate the genetic relatedness of these C. albicans BSI isolates. A total of 79 episodes of C. albicans BSI in 76 paediatric patients were identified, including 41 (51.9%) from the paediatric intensive care unit, 24 (30.4%) from the neonatal intensive care unit and 14 (17.7%) from general wards. More than half (59.5%) of these patients had underlying chronic co-morbidities, and the majority (94.9%) had a catheter or some other artificial device. All the isolates were susceptible to the antifungal agents tested. Only 32.9% (26/79) received effective antifungal agents within 24 h of onset of candidaemia. Twenty-five (31.6%) patients had persistent candidaemia (>3 days after the start of antifungal treatment) and candidaemia-attributable mortality rate was 22.8% (18/79). The 72 isolates available for MLST yielded 53 unique diploid sequence types (DSTs). Forty-five DSTs were singletons and eight DSTs were shared by 27 (37.5%) isolates. Seventy-one (98.6%) isolates were clustered within previously known clades. Based on the definition of two or more strains with shared DST occurring within a period of 90 days, 10.1% of the infections were categorized as nosocomial clusters, most commonly identified in the intensive care units. Although cluster-associated candidaemia was not associated with a higher mortality rate, none of the clusters were identified by the hospital infection control team.


Assuntos
Candida albicans/classificação , Candida albicans/genética , Candidemia/epidemiologia , Candidemia/patologia , Adulto , Antifúngicos/farmacologia , Antifúngicos/uso terapêutico , Candida albicans/efeitos dos fármacos , Candida albicans/isolamento & purificação , Candidemia/microbiologia , Candidemia/mortalidade , Infecções Relacionadas a Cateter/epidemiologia , Infecções Relacionadas a Cateter/microbiologia , Infecções Relacionadas a Cateter/mortalidade , Infecções Relacionadas a Cateter/patologia , Criança , Pré-Escolar , Análise por Conglomerados , Infecção Hospitalar/epidemiologia , Infecção Hospitalar/microbiologia , Infecção Hospitalar/mortalidade , Infecção Hospitalar/patologia , Feminino , Genótipo , Humanos , Lactente , Recém-Nascido , Masculino , Testes de Sensibilidade Microbiana , Pessoa de Meia-Idade , Epidemiologia Molecular , Tipagem de Sequências Multilocus , Técnicas de Tipagem Micológica , Homologia de Sequência , Análise de Sobrevida , Taiwan/epidemiologia , Centros de Atenção Terciária , Adulto Jovem
7.
Med Mal Infect ; 45(7): 264-72, 2015 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-26028525

RESUMO

OBJECTIVES: A carbapenem-resistant Acinetobacter calcoaceticus-Acinetobacter baumannii complex (CRA complex) infection is one of most the difficult infections to control worldwide. We evaluated the long-term effects of infection control interventions on the incidence densities of healthcare-associated infection (HAI) and CRA complex infection, and the rates of Acinetobacter calcoaceticus-Acinetobacter baumannii complex bacteremia (AB). PATIENTS AND METHODS: We performed a cross-sectional analysis at the Changhua Christian Hospital from January 2002 to December 2013. Interventions for infection control were implemented from 2002 to 2009 (period 1). From 2010 to 2013 (period 2), infection control programs were improved by in-service education and a hand hygiene campaign to prepare for international and national hospital accreditation. The effectiveness of infection and antibiotic control programs was assessed according to the incidence densities of HAI and CRA complex, rates of CRA complex and of AB, chlorhexidine consumption density, and defined daily dose of antibiotics. RESULTS: The incidence density of HAI decreased from 4.56‰ to 1.52‰ from periods 1 to 2 (P<0.001). Likewise, the incidence of AB decreased from 177.79 to 137.76 per person-years per 100,000 admissions (P<0.001). The incidence density of CRA complex ranged from 3.17-7.38‰. The chlorhexidine consumption density increased from 5.5 to 45.5 L per 1000 patient-days (P<0.001). The consumption of piperacillin-tazobactam was lower in period 2 than in period 1 (P<0.001). CONCLUSION: Education for infection control programs, hand hygiene campaigns, and antibiotics control programs may decrease the incidence density of AB and HAI, and may help control CRA complex infection.


Assuntos
Infecções por Acinetobacter/prevenção & controle , Infecções por Acinetobacter/transmissão , Acinetobacter baumannii , Acinetobacter calcoaceticus , Antibacterianos/uso terapêutico , Carbapenêmicos/uso terapêutico , Infecção Hospitalar/prevenção & controle , Infecção Hospitalar/transmissão , Resistência beta-Lactâmica , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Criança , Estudos Transversais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Taiwan , Fatores de Tempo , Resultado do Tratamento , Adulto Jovem
9.
Mol Psychiatry ; 20(3): 377-87, 2015 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-25600109

RESUMO

Somatostatin (SST) deficits are common pathological features in depression and other neurological disorders with mood disturbances, but little is known about the contribution of SST deficits to mood symptoms or causes of these deficits. Here we show that mice lacking SST (Sst(KO)) exhibit elevated behavioral emotionality, high basal plasma corticosterone and reduced gene expression of Bdnf, Cortistatin and Gad67, together recapitulating behavioral, neuroendocrine and molecular features of human depression. Studies in Sst(KO) and heterozygous (Sst(HZ)) mice show that elevated corticosterone is not sufficient to reproduce the behavioral phenotype, suggesting a putative role for Sst cell-specific molecular changes. Using laser capture microdissection, we show that cortical SST-positive interneurons display significantly greater transcriptome deregulations after chronic stress compared with pyramidal neurons. Protein translation through eukaryotic initiation factor 2 (EIF2) signaling, a pathway previously implicated in neurodegenerative diseases, was most affected and suppressed in stress-exposed SST neurons. We then show that activating EIF2 signaling through EIF2 kinase inhibition mitigated stress-induced behavioral emotionality in mice. Taken together, our data suggest that (1) low SST has a causal role in mood-related phenotypes, (2) deregulated EIF2-mediated protein translation may represent a mechanism for vulnerability of SST neurons and (3) that global EIF2 signaling has antidepressant/anxiolytic potential.


Assuntos
Giro do Cíngulo/patologia , Transtornos do Humor/genética , Transtornos do Humor/patologia , Somatostatina/metabolismo , Adenina/análogos & derivados , Adenina/farmacologia , Adenina/uso terapêutico , Animais , Antidepressivos/farmacologia , Antidepressivos/uso terapêutico , Fator Neurotrófico Derivado do Encéfalo/metabolismo , Corticosterona/sangue , Modelos Animais de Doenças , Fator de Iniciação 2 em Eucariotos/metabolismo , Feminino , Regulação da Expressão Gênica/efeitos dos fármacos , Regulação da Expressão Gênica/genética , Glutamato Descarboxilase/metabolismo , Proteínas de Fluorescência Verde/genética , Proteínas de Fluorescência Verde/metabolismo , Indóis/farmacologia , Indóis/uso terapêutico , Masculino , Camundongos , Camundongos Endogâmicos C57BL , Camundongos Transgênicos , Transtornos do Humor/sangue , Transtornos do Humor/etiologia , Neurônios/metabolismo , Transdução de Sinais/genética , Somatostatina/genética , Estresse Psicológico/sangue , Estresse Psicológico/complicações , Estresse Psicológico/genética , Transcriptoma/genética
10.
Eur J Neurol ; 21(5): 797-801, 2014 May.
Artigo em Inglês | MEDLINE | ID: mdl-24629033

RESUMO

BACKGROUND AND PURPOSE: Anosognosia and neglect may coexist in stroke patients. Neglect patients often report poor quality of life (QOL), whereas patients suffering from other cognition disorders with poor insight report better QOL. This study investigates the relationship between anosognosia, neglect and QOL amongst stroke survivors. METHODS: Stroke survivors who met the criteria were used as a sampling pool. Sixty stroke patients were observed in this study, amongst whom 20 patients with anosognosia and neglect (A+N+), 20 patients with neglect but not anosognosia (A-N+) and 20 patients with neither anosognosia nor neglect (A-N-) were selected from the sampling pool based on demographic characteristics matched with the A+N+ group. A questionnaire (SS-QOL) was used to collect the QOL perceived by the stroke survivors. RESULTS: The perceived QOL of the A+N+ group was significantly better than those of the other groups, including the subscales of self-care, mobility, work/productivity, upper extremity, mood, family role and social role. However, the A+N+ group had poor balance level and more fall incidents were reported. CONCLUSION: The A+N+ group perceived better QOL but had more falls and poorer balance than the other groups. Health providers should work with caregivers aggressively in preventing accidents.


Assuntos
Agnosia/etiologia , Lateralidade Funcional/fisiologia , Transtornos da Percepção/etiologia , Qualidade de Vida , Acidente Vascular Cerebral , Adulto , Idoso , Análise de Variância , Transtornos Cognitivos/diagnóstico , Transtornos Cognitivos/etiologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Testes Neuropsicológicos , Acidente Vascular Cerebral/complicações , Acidente Vascular Cerebral/mortalidade , Acidente Vascular Cerebral/psicologia
11.
Exp Clin Endocrinol Diabetes ; 121(1): 1-5, 2013 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-23258570

RESUMO

OBJECTIVE: Thyroid stimulating hormone receptor antibodies (TSHRAbs) are specific autoantibodies of Graves' disease (GD). They activate adenylate cyclase, induce thyroid growth, and cause an increased rate of thyroid hormone production and secretion. TSHRAbs levels are decreased by treatment and may predict recurrence when they persist. Theoretically, TSHRAbs levels should be related to intrathyroid vascularity (ITV) due to the autoimmunity and inflammation. We aimed to analyze the relationship between TSHRAbs represented by thyrotropin-binding inhibitory immunoglobulin (TBII) levels and ITV measured by thyroid duplex sonography (TDS). PATIENTS: 56 GD patients were prospectively recruited. MEASUREMENTS: ITV, measured using TDS, was defined as follows: (average color-flow area in the right and left sides of the thyroid/total thyroid area in transverse view)×100. RESULTS: The average TBII level was 47.1% and average ITV was 27.24. ITV positively and significantly correlated with TBII (p<0.001). CONCLUSIONS: TSHRAbs show significant correlation with ITV. This may help doctors to estimate thyroid autoimmune activity when they performing sonography at clinics.


Assuntos
Autoanticorpos/sangue , Doença de Graves/sangue , Receptores da Tireotropina , Glândula Tireoide/irrigação sanguínea , Autoanticorpos/imunologia , Feminino , Doença de Graves/imunologia , Humanos , Masculino , Estudos Retrospectivos , Glândula Tireoide/imunologia , Glândula Tireoide/patologia
12.
Med Hypotheses ; 77(1): 11-4, 2011 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-21444157

RESUMO

We previously found that a blood urea nitrogen/creatinine (BUN/Cr) ratio>15 is an independent predictor of early neurological deterioration after acute ischemic stroke, which suggests that dehydration may be a cause of early deterioration. The aim of this study was to determine whether urine specific gravity, which is another indicator of hydration status and one that is more easily obtained, is also an independent predictor of early deterioration or stroke-in-evolution (SIE). Demographic and clinical data were recorded at admission from patients with acute ischemic stroke who were prospectively enrolled from October 2007 to June 2010. We compared patients with and without stroke-in-evolution (based on an increase of 3 points or more points on the National Institutes of Health Stroke Scale within 3 days). Univariate and multivariate statistical analyses were carried out. A total of 317 patients (43 SIE and 274 non-SIE) were enrolled; the first 196 patients comprised the cohort of our previous study. The only two independent predictors of early deterioration or SIE were BUN/Cr>15 and urine specific gravity>1.010. After adjusting for age and gender, patients with a urine specific gravity>1.010 were 2.78 times more likely to develop SIE (95% CI=1.11-6.96; P=0.030). Urine specific gravity may be useful as an early predictor of early deterioration in patients with acute ischemic stroke. Patients with urine specific gravity ≤ 1.010 therefore may have a reduced likelihood of early neurological deterioration.


Assuntos
Isquemia Encefálica/urina , Acidente Vascular Cerebral/urina , Urinálise , Doença Aguda , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Gravidade Específica
13.
Osteoporos Int ; 22(5): 1469-79, 2011 May.
Artigo em Inglês | MEDLINE | ID: mdl-20683709

RESUMO

SUMMARY: Using human mesenchymal stem cells, we identified catechin from a panel of herbal ingredients and Chinese traditional compounds with the strongest osteogenic effects. Catechin increased alkaline phosphatase activity, calcium deposition, and mRNA expression of Runx2 and osteocalcin. We further clarified the signaling pathway that catechin mediated to stimulate osteogenesis. INTRODUCTION: Human mesenchymal stem cells (hMSCs), useful as a species specific cell culture system for studying cell lineage differentiation, were examined as a tool to identify novel herbal ingredients and Chinese traditional compounds for enhancing osteogenesis. METHODS: Immortalized and primary hMSCs were induced in osteogenic induction medium in the presence of a variety of herbal ingredients and Chinese traditional compounds and osteogenic differentiation was evaluated by histochemical assays and quantitative RT-PCR. RESULTS: Using immortalized hMSCs, we first identified catechin, 18ß-glycyrrhetinic acid, baishao, and danggui with osteogenic properties, which enhanced calcium deposition at the dose without significant cytotoxic effects. Primary hMSCs were then applied for confirming the osteogenic effects of catechin, which increased alkaline phosphatase activity, calcium deposition, and mRNA expression of Runx2 and osteocalcin. We further found the extracellular signal-regulated kinase (ERK) pathway was downregulated upon stimulation with catechin. Catechin increased the level and activity of protein phosphatases 2A (PP2A) that dephosphorylates ERK kinase (MEK) and ERK. Further, PP2A inhibitor, okadaic acid, abolished the effect of catechin-mediated inactivation of ERK and stimulation of osteogenesis. The blocking effect of okadaic acid on osteogenesis was further reversed by PD98059, a specific inhibitor of MEK. Co-immunoprecipitation revealed the association of PP2A to both MEK and ERK. CONCLUSIONS: These studies propose catechin enhanced osteogenesis by increasing the PP2A level that inhibits the MEK and ERK signaling in hMSCs. These results prove the concept of using hMSCs as a convenient tool for rapid and consistent screening of the osteogenic herbal ingredients and traditional Chinese compounds.


Assuntos
Catequina/farmacologia , Células-Tronco Mesenquimais/efeitos dos fármacos , Osteogênese/efeitos dos fármacos , Proteína Fosfatase 2/metabolismo , Fosfatase Alcalina/metabolismo , Cálcio/metabolismo , Catequina/administração & dosagem , Diferenciação Celular/efeitos dos fármacos , Células Cultivadas , Células Imobilizadas , Relação Dose-Resposta a Droga , Regulação para Baixo/efeitos dos fármacos , Avaliação Pré-Clínica de Medicamentos/métodos , Medicamentos de Ervas Chinesas/farmacologia , MAP Quinases Reguladas por Sinal Extracelular/genética , MAP Quinases Reguladas por Sinal Extracelular/metabolismo , Estudos de Viabilidade , Humanos , Sistema de Sinalização das MAP Quinases/efeitos dos fármacos , Sistema de Sinalização das MAP Quinases/fisiologia , Células-Tronco Mesenquimais/citologia , Células-Tronco Mesenquimais/enzimologia , Osteogênese/fisiologia
14.
J Intellect Disabil Res ; 53(7): 654-64, 2009 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-19490349

RESUMO

BACKGROUND: Little account has been taken of quality of life (QoL) among family carers of adults with an intellectual disability (ID) and family carers of adults with a mental illness (MI), particularly the female ageing carers' perceived stigma. We explore whether there are differences in the significant predictors of female ageing family carers' QoL between family carers of adults with ID and family carers of adults with MI and aim to examine the effect of these differences in stigma on carer QoL between the two groups. METHODS: A structural survey interview was administered to 350 female family carers supporting persons with ID and 66 female carers supporting persons with MI; the carers were aged 55 years and older, and the interviews were carried between July 2006 and April 2007 at the carers' homes in a county in Taiwan. The survey package contained standardised scales to measure the carer's stigma, social support, QoL and health as well as adult and carer socio-demographic data. RESULTS: The results highlight that in both groups the ageing female family carers' health and social support were strongly associated with the level of their QoL even though there was also a strong effect of carers' perceived stigma on their QoL. Contrary to previous findings, ageing female family carers of adults with MI had a higher level of QoL compared with the carers of adults with ID. Hierarchical regressions show a stronger effect of perceived stigma on the carer QoL among the family carers of adults with MI than among the carers of adults with ID. CONCLUSIONS: This study suggests that attempts to improve these female older family carers' health and social support must include their lifelong unmet needs in terms of how to cope with the perceived stigma associated with their position.


Assuntos
Cuidadores/psicologia , Efeitos Psicossociais da Doença , Deficiência Intelectual/psicologia , Transtornos Mentais/psicologia , Preconceito , Qualidade de Vida/psicologia , Atividades Cotidianas/psicologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Avaliação da Deficiência , Feminino , Humanos , Deficiência Intelectual/terapia , Masculino , Estado Civil , Transtornos Mentais/terapia , Pessoa de Meia-Idade , Apoio Social , Fatores Socioeconômicos , Taiwan
15.
J Int Med Res ; 37(2): 289-97, 2009.
Artigo em Inglês | MEDLINE | ID: mdl-19383221

RESUMO

This double-blind, active- and randomized-controlled study compared the efficacy and safety of a fixed-dose combination of valsartan/hydrochlorothiazide 80 mg/12.5 mg once daily (n = 32) with amlodipine monotherapy 5 mg once daily (n = 33) for 8 weeks in patients with mild to moderate hypertension. Non-inferiority of valsartan/hydrochlorothiazide to amlodipine was demonstrated by comparable reductions in sitting systolic blood pressure (SBP), sitting diastolic blood pressure (DBP), and daytime, night-time and 24-h SBP and DBP on ambulatory blood pressure monitoring. Between-group comparisons of adverse events and changes in laboratory parameters did not reach statistical significance, except for uric acid which showed a significant increase in the valsartan/hydrochlorothiazide group compared with the amlodipine group, but was still below the laboratory's upper limit of normal. In conclusion, the use of the fixed-dose combination of valsartan/hydrochlorothiazide 80 mg/12.5 mg once daily as a starting regimen in patients with mild to moderate hypertension was shown to have non-inferior efficacy and comparable safety for daily practice compared with amlodipine 5 mg once daily monotherapy.


Assuntos
Anlodipino/uso terapêutico , Anti-Hipertensivos/uso terapêutico , Hidroclorotiazida/efeitos adversos , Hidroclorotiazida/uso terapêutico , Hipertensão/tratamento farmacológico , Tetrazóis/efeitos adversos , Tetrazóis/uso terapêutico , Valina/análogos & derivados , Anti-Hipertensivos/administração & dosagem , Anti-Hipertensivos/efeitos adversos , Relação Dose-Resposta a Droga , Método Duplo-Cego , Quimioterapia Combinada , Feminino , Humanos , Hidroclorotiazida/administração & dosagem , Masculino , Pessoa de Meia-Idade , Resultado do Tratamento , Valina/efeitos adversos , Valina/uso terapêutico , Valsartana
16.
BMJ Case Rep ; 2009: bcr2006067652, 2009.
Artigo em Inglês | MEDLINE | ID: mdl-21687092
17.
J Ethnopharmacol ; 119(1): 67-73, 2008 Sep 02.
Artigo em Inglês | MEDLINE | ID: mdl-18577441

RESUMO

Effects of seselin (C(14)H(12)O(3); MW 228) identified from Plumbago zeylanica on phytohemagglutinin (PHA)-stimulated cell proliferation were studied in human peripheral blood mononuclear cells (PBMC). The data demonstrated that seselin inhibited PBMC proliferation-activated with PHA with an IC(50) of 53.87+/-0.74 microM. Cell viability test indicated that inhibitory effects of seselin on PBMC proliferation were not through direct cytotoxicity. The action mechanisms of seselin may involve the regulation of cell cycle progression, interleukin-2 (IL-2) and interferon-gamma (IFN-gamma) production in PBMC. Since cell cycle analysis indicated that seselin arrested the cell cycle progression of activated PBMC from the G(1) transition to the S phase. Seselin suppressed IL-2 and IFN-gamma production in a concentration-dependent manner. Furthermore, seselin significantly decreased the IL-2 and IFN-gamma gene expression in PHA-activated PBMC. Therefore, results elucidated for the first time that seselin is likely an immunomodulatory agent for PBMC.


Assuntos
Proliferação de Células/efeitos dos fármacos , Cumarínicos/farmacologia , Fatores Imunológicos/farmacologia , Plumbaginaceae/química , Adulto , Ciclo Celular/efeitos dos fármacos , Sobrevivência Celular/efeitos dos fármacos , Cumarínicos/administração & dosagem , Cumarínicos/isolamento & purificação , Relação Dose-Resposta a Droga , Regulação da Expressão Gênica/efeitos dos fármacos , Humanos , Fatores Imunológicos/administração & dosagem , Fatores Imunológicos/isolamento & purificação , Concentração Inibidora 50 , Interferon gama/efeitos dos fármacos , Interferon gama/metabolismo , Interleucina-2/metabolismo , Leucócitos Mononucleares/efeitos dos fármacos , Masculino , Fito-Hemaglutininas/farmacologia , Extratos Vegetais/farmacologia , Adulto Jovem
18.
Int J Clin Pract ; 62(4): 555-61, 2008 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-18067561

RESUMO

BACKGROUND: In ST-segment elevation acute myocardial infarction (STEMI), dislodgement of thrombus within the culprit artery during primary percutaneous coronary intervention (PCI) may cause distal embolisation and impaired myocardial reperfusion. Clinical results of thromboembolic protection strategies have been controversial. We conducted this study to investigate whether the benefit of thrombus removal is time dependent. METHODS: Seventy-four STEMI patients within 12 h from onset were randomised to receive either primary PCI with initial thrombosuction (IT) or standard strategy. Results were analysed in subgroups according to the onset-to-lab time intervals (subgroup 1: 0-240 min, subgroup 2: 241-480 min and subgroup 3: 481-720 min). RESULTS: The primary end-points were improvements in thrombolysis in myocardial infarction flow (DeltaTIMI) and myocardial blush grade (DeltaMBG) postprocedure. Better DeltaTIMI (2.2 +/- 1.1 vs. 1.5 +/- 1.3, p = 0.014) and DeltaMBG (2.3 +/- 1.1 vs. 1.0 +/- 1.5, p < 0.001) were observed in IT patients, compared with standard PCI patients. In onset-to-lab time subgroup analysis, the difference between IT and standard PCI is significant only in subgroup 2 (DeltaTIMI 2.6 +/- 1.0 vs. 1.3 +/- 1.2, p = 0.007; DeltaMBG 2.6 +/- 0.9 vs. 1.0 +/- 1.1, p = 0.010), but not in the other two subgroups. CONCLUSIONS: This prospective randomised study shows that primary PCI with IT may improve epicardial flow and myocardial reperfusion in patients with STEMI, and this benefit is the most significant in patients treated within 4-8 h after symptom onset.


Assuntos
Trombose Coronária/terapia , Infarto do Miocárdio/terapia , Reperfusão Miocárdica/métodos , Angioplastia Coronária com Balão , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Sucção/métodos , Trombectomia/métodos , Fatores de Tempo
19.
J Intellect Disabil Res ; 51(Pt 11): 875-83, 2007 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-17910539

RESUMO

BACKGROUND: Little research has been conducted about the quality of life (QOL) of people with intellectual disabilities (ID) in Taiwan, particularly their subjective QOL. This study examined the personal perceptions of these individuals as measured on internationally recognized core QOL domains and indicators. METHODS: A census interview survey was conducted in Hsin-Chu City in Taiwan; 233 adults aged over 16 years with mild ID and living with their families participated in the study. Data were collected using the Cross-Cultural QOL Indicators (CCQOLI) together with socio-demographic data that included 'activities of daily living' and 'instrumental activities of daily living' (IADL). The CCQOLI were based on the three most commonly reported indicators of each of the eight QOL domains: emotional well-being, interpersonal relations, material well-being, personal development, physical well-being, self-determination, social inclusion and rights. Each indicator has two sets of questions related to the indicator's 'importance' and 'use'. These are answered by the respondent using a 4-point Likert scale. RESULTS: The importance and use of the QOL indicators were evaluated positively by the respondents. The adults' individual characteristics, namely IADL and educational level, were significant predictors for the 'importance' while the adults' perceptions of 'use' for overall QOL were significantly affected by his/her socio-economic data, that is, residence location and father's educational level. CONCLUSIONS: The present study addressed the issue of self-reported QOL in people with ID in Taiwanese society, becoming a possible benchmark for similar measurements carried out by disability movements there. These results contribute to current advocacy efforts towards creating a supportive environment for people with ID.


Assuntos
Cuidadores/psicologia , Comparação Transcultural , Deficiência Intelectual/psicologia , Qualidade de Vida/psicologia , Atividades Cotidianas/psicologia , Adolescente , Adulto , Relações Familiares , Feminino , Inquéritos Epidemiológicos , Humanos , Inteligência , Masculino , Pessoa de Meia-Idade , Autocuidado/psicologia , Percepção Social , Fatores Socioeconômicos , Taiwan
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