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1.
J Adv Nurs ; 80(7): 2785-2800, 2024 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-38197541

RESUMO

AIMS: To generate pre-hospital symptom networks, explore core, bridge and sentinel symptoms, identify pre-hospital symptom clusters and analyse relationship between influencing factors and symptom clusters in decompensated cirrhosis patients. DESIGN: A cross-sectional study design using the Strengthening the Reporting of Observational Studies in Epidemiology checklist. METHODS: Demographical, physiological, psychological and sociological characteristics and the pre-hospital symptoms of 292 decompensated cirrhotic patients were collected from October 2021 to March 2023 in China. Frequencies, percentages, means, standard deviations, independent samples t-tests, one-way analysis of variance, exploratory factor analysis, multiple stepwise regression analysis and network analysis were used for data analysis. RESULTS: 'I don't look like myself' and itching were core and bridge symptoms, while bloating and lack of energy were sentinel symptoms in decompensated cirrhotic patients. Monthly family income, anxiety, depression, social support and disease duration influenced the neuropsychological symptom cluster, with worrying as the strongest predictor symptom. Influential factors for cirrhosis-specific symptom cluster included Child-Pugh class, monthly family income, disease duration, anxiety and depression, with itching being the strongest predictor symptom. Monthly family income, disease duration and depression were influential factors for gastrointestinal symptom cluster, with loss of appetite as the strongest predictor symptom. CONCLUSIONS: Neuropsychological, cirrhosis-specific and gastrointestinal symptom clusters were formed in decompensated cirrhotic patients. Through network analysis, direct connections between symptoms, symptom clusters and their influencing factors were revealed, thereby offering clinicians a foundation for effectively managing patients' pre-hospital symptoms. IMPACT: Decompensated cirrhosis patients commonly have multiple symptoms, while the management of pre-hospital symptoms is often suboptimal. This study identified neuropsychological, cirrhosis-specific, gastrointestinal symptom clusters and recognized core, bridge and sentinel symptoms in these patients. It also revealed the most prominent symptoms within each cluster. This provides insight into the hierarchy of symptoms, improving symptom management in decompensated cirrhosis. PATIENT AND PUBLIC INVOLVEMENT: There was no patient or public involvement.


Assuntos
Cirrose Hepática , Humanos , Estudos Transversais , Masculino , Feminino , Pessoa de Meia-Idade , Cirrose Hepática/complicações , Cirrose Hepática/psicologia , Cirrose Hepática/fisiopatologia , Adulto , Idoso , China/epidemiologia , Avaliação de Sintomas
2.
Bioorg Chem ; 130: 106223, 2023 01.
Artigo em Inglês | MEDLINE | ID: mdl-36356372

RESUMO

Eight hybrids of amantadine (ATD) with a natural modulator gardenamide A (GA) via an alkylene carbonyl bridge or alkylene bridge have been designed and synthesized. Evaluated by electrophysiological assay, compound 5b was confirmed an enhanced NMDAR antagonist compared to ATD with IC50 value of 10.2 ± 1.2 µM. 5b has been demonstrated to reverse the damages of behavioral performance, the loss of dopaminergic neurons, the reduction of TH positive, and the increase of α-synuclein in both MPTP-treated mice and zebrafish models. In both ethological and ecological experiments, the activity of 5b was confirmed better than ATD or ATD/GA combination, and was almost equal to the positive selegiline. In vivo and in vitro, 5b is shown to reverse the ascend of NR1 and i-NOS levels. This candidate was also demonstrated the activity to down-regulated MPTP-increased Ca2+ influx in SH-SY5Y cells in a steep and sharp mode. It is displayed that 5b exerts neuroprotective effect partly by activating the PI3K/Akt signaling pathway. Taken all together, our data support that 5b is a more promising agent against PD than ATD.


Assuntos
N-Metilaspartato , Neuroblastoma , Humanos , Camundongos , Animais , 1-Metil-4-Fenil-1,2,3,6-Tetra-Hidropiridina , Fosfatidilinositol 3-Quinases/metabolismo , Peixe-Zebra/metabolismo , Camundongos Endogâmicos C57BL , Amantadina/farmacologia
3.
BMC Nurs ; 22(1): 133, 2023 Apr 23.
Artigo em Inglês | MEDLINE | ID: mdl-37088853

RESUMO

BACKGROUND: Surgical Nursing is a core subject for nursing undergraduates that requires active and effective learning strategies to cultivate students' autonomous learning competencies and critical thinking. The effects of BOPPPS (Bridge-in, Objectives, Pretest, Participatory Learning, Post-test and Summary) model combined with team-based learning (TBL) have rarely been explored in Surgical Nursing courses. OBJECTIVE: To explore the effects of BOPPPS combined with TBL in Surgical Nursing for nursing undergraduates. METHODS: A mixed research method of quasi-experimental study design and descriptive qualitative research was used. The control group included 27 nursing undergraduates who had finished the Surgical Nursing course using traditional learning. The experimental group included 36 nursing undergraduates were enrolled in to receive the Surgical Nursing course in the teaching mode of BOPPPS combined with TBL. The quantitative data of students' Surgical Nursing final scores, autonomous learning competencies and critical thinking ability of the two groups were collected and compared by t-test. Qualitative results were obtained through semi-structured interviews and data were analyzed by thematic analysis method. RESULTS: Compared with the traditional learning mode, BOPPPS combined with TBL significantly improved nursing students' final examination scores, autonomous learning competencies and critical thinking ability (p < 0.05). Qualitative results from 14 undergraduate nursing students' interviews were summarized into five themes: (1) stimulating learning interest; (2) improving autonomous learning ability; (3) improving the sense of teamwork; (4) exercising critical thinking; and (5) suggestions for improvement. CONCLUSIONS: The combination of BOPPPS and TBL positively impacted nursing students by improving their autonomous learning competencies and critical thinking ability. The study suggests BOPPPS combined with TBL learning as an effective, alternative learning mode.

4.
Geriatr Nurs ; 51: 369-377, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37127013

RESUMO

BACKGROUND: To date quantitative meta-analysis with large samples to investigate the effects and potential moderators of physical activity (PA) on executive function (EF) in older adults with dementia is insufficient. Therefore, we conducted this meta-analysis. DESIGN: Meta-analysis of randomized controlled trials (RCTs). PARTICIPANTS: Old people with Alzheimer's disease (AD) or related dementia of varying types and severity as the primary diagnosis. METHODS: PubMed, Web of Science, the Cochrane Library and Embase databases were searched for relevant studies published from 01 January, 2010 to 01 March, 2022. The results of executive function were reported in all RCTs. Random-effects meta-analysis was used to calculate the size of effects. Subgroup analyses of three moderators (including the specific sub-domains of EF, exercise prescription variables, and sample characteristics) were performed. RESULTS: Eighteen RCTs were included with a combined sample size of 1366. Overall, PA interventions improved overall EF (standardized mean difference [SMD]=0.23, 95% confidence interval [CI] 0.05 to 0.41, p<0.05). The EF sub-domain "planning" was significant moderator (SMD=0.31, 95%CI 0.11 to 1.51, p<0.01), but inhibitory control, working memory and cognitive flexibility were not significant. Regarding exercise prescription variables, type of resistance training; moderate intensity; total duration ≤24 weeks and short (once or twice a week) frequency improved overall EF performance. Session length may be a moderator. Regarding sample characteristics, old-old, AD and both dementia and AD had significant benefits. CONCLUSIONS AND IMPLICATIONS: EF in older adults with AD or related dementia benefited from physical activity, and the benefit was affected by the type, intensity, total duration, frequency of exercise. Physical activity can be an alternative intervention in aging patients with dementia, to improve EF performance or prevent or EF decline.


Assuntos
Doença de Alzheimer , Função Executiva , Humanos , Idoso , Ensaios Clínicos Controlados Aleatórios como Assunto , Exercício Físico , Terapia por Exercício , Doença de Alzheimer/terapia , Cognição
5.
Int J Colorectal Dis ; 37(11): 2303-2308, 2022 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-36278999

RESUMO

PURPOSE: Colon cancer is a leading cause of cancer-related morbidity and mortality in the USA. We sought to better characterize colon cancer among a predominantly Black cohort with and without HIV. METHODS: We retrospectively reviewed all patients (n = 1482) diagnosed with colon cancer between 2015 and 2019 at a large urban tertiary teaching hospital using ICD-9 and ICD-10 codes. In this cohort, 114 (7.7%) of the patients also had HIV. Descriptive summaries were performed for gender, age, race/ethnicity, insurance status, tobacco/alcohol use, and BMI. RESULTS: Among patients with colon cancer only, 50.51% (n = 691) were men and 49.49% (n = 677) were women. Among patients with both HIV and colon cancer, 78.95% (n = 90) were men and 21.05% (n = 24) were women (p-value < 0.001). The mean age of the colon cancer patient sample was 61.62 years for those without HIV and 51.31 years for those with HIV (p-value < 0.001). Persons with both HIV and colon cancer were more likely to have a lower BMI (p-value < 0.001) and a history of smoking and alcohol use (p-value < 0.001), compared to patients with colon cancer only. When accounting for BMI, tobacco, and alcohol use, those with HIV were 10 years younger than those without HIV, 95% CI, 7.3-13; p < 0.001. CONCLUSIONS: In this study, HIV positive status was a risk factor for developing colon cancer at a younger age. Larger observational studies with multivariable analysis should be done to better describe the risk of colon cancer and HIV.


Assuntos
Neoplasias do Colo , Infecções por HIV , Masculino , Humanos , Feminino , Pessoa de Meia-Idade , Estudos Retrospectivos , Fatores de Risco , Estudos de Coortes , Infecções por HIV/complicações , Infecções por HIV/epidemiologia , Neoplasias do Colo/epidemiologia
6.
Neoplasma ; 69(5): 1228-1236, 2022 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-35951455

RESUMO

Multiple myeloma (MM) is the most common hematological malignancy with uncontrolled proliferation of monoclonal plasma cells. Despite treatment improvements, MM remains an incurable disease for most patients. Therefore, promising molecular markers are required for MM treatment decisions. In the present study, we explored the relationship between the BRAF expression in circulating tumor cells (CTCs) and the clinical features of patients with MM. The results showed that CTCs were associated with MM staging, and the expression of BRAF was associated with different CTCs. Moreover, the BRAF gene was correlated with patients' white blood cells, blood albumin levels, and Eastern Cooperative Oncology Group (ECOG) score. BRAF expression positively correlated with total CTCs, hybrid CTCs, and mesenchymal CTCs. Taken together, CTCs tightly correlated with the clinical stages and characteristics of MM. Our findings may provide a promising prognosis biomarker for MM treatment decisions.


Assuntos
Mieloma Múltiplo , Células Neoplásicas Circulantes , Proteínas Proto-Oncogênicas B-raf , Albuminas , Biomarcadores , Biomarcadores Tumorais/genética , Transição Epitelial-Mesenquimal/genética , Humanos , Mieloma Múltiplo/genética , Células Neoplásicas Circulantes/metabolismo , Prognóstico , Proteínas Proto-Oncogênicas B-raf/genética
7.
Telemed J E Health ; 28(3): 391-398, 2022 03.
Artigo em Inglês | MEDLINE | ID: mdl-34077292

RESUMO

Introduction: To adapt during the coronavirus disease 2019 (COVID-19) pandemic, a large safety-net hospital in Atlanta, Georgia and other hospitals across the United Sates, increased telemedicine (TM) for outpatient visits. The impact on resident physicians, including minority providers, had not yet been reported. We aimed to assess how primary care residents perceived increased TM in clinics during the pandemic, and assess resident burnout. Materials and Methods: An online survey was sent to 60 internal medicine (IM) and 18 family medicine (FM) residents who used TM to treat underserved patients, from March to May 2020, at the onset of the COVID-19 pandemic. The questionnaire included questions on resident demographics, satisfaction with TM, screening capability for COVID-19, effectiveness for patient education on COVID-19, impact on patient interactions and time management. Burnout was assessed with the Abbreviated Maslach Burnout Inventory. Results: A majority (62 of 78) eligible residents (79.5%) responded to the survey. Ninety-one percent of residents agreed that TM was a secure alternative to face-to-face encounters. Seventy-nine percent used it to screen for signs/symptoms of COVID-19 and 93% provided patient education on COVID-19. Average visit length decreased by 10-20 min with TM. Post-TM, scores for overall burnout were decreased (p = 0.0003) and less residents in total exhibited burnout (p = 0.0156). Discussion and Conclusions: IM and FM residents viewed TM as an efficient way to screen for and provide education on COVID-19, as well as a secure alternative to face-to-face encounters. With increased used of TM during COVID-19, there was decreased burnout among primary care residents.


Assuntos
Esgotamento Profissional , COVID-19 , Internato e Residência , Telemedicina , Esgotamento Profissional/epidemiologia , COVID-19/epidemiologia , Humanos , Pandemias
8.
BMC Nurs ; 21(1): 362, 2022 Dec 19.
Artigo em Inglês | MEDLINE | ID: mdl-36536429

RESUMO

BACKGROUND: While single-method studies have reported on the effectiveness of simulated interprofessional teaching, our understanding of its full effects remains incomplete. Teaching design also provides no relevant theoretical guidance, which reduces the scientific quality and rigor of research. The purpose of this work was to study the effects of the simulated interprofessional education (SIPE) teaching model based on the 3P theory on the course of "Clinical Critical Thinking Training" through a convergent mixed method, and to provide the basis for future teaching design. METHODS: A convergent mixed-method design was used, which consisted of a survey and a semi-structured interview. Data collection took place from September 2021 to July 2022. A cluster sampling method was used to select 60 full-time nursing students from a school in China, and randomly divide them into a control group of 36 and an experimental group of 24. According to the principle of voluntary participation, 6 students majoring in clinical medicine and 6 students majoring in pharmacy were recruited to join the experimental group to form an interprofessional team. The students studied "Clinical Critical Thinking Training" together, in which the control group used traditional simulation teaching and the experimental group used SIPE. The CCTDI (California Critical Thinking Disposition Inventory) and AITCS-II Student (Assessment of Interprofessional Team Collaboration in Student Learning Scale) were used for quantitative evaluation before and after the course, and descriptive statistics and Mann-Whitney U test were used to compare the critical thinking and interprofessional collaboration skills of the two groups of students. Semi-structured interviews were used for qualitative evaluation. Thematic analysis was used to understand student development on the basis of inter-professional core competencies and learning experience. RESULTS: The students' interprofessional cooperation abilities and critical thinking scores improved compared with the beginning of the course, but the scores of the experimental group were significantly higher than the control group (p < 0.05). Three themes emerged regarding simulated interprofessional teaching: clarifying team positioning, improving team efficiency, and optimizing the learning experience. CONCLUSION: SIPE can build students' critical thinking, teamwork, and interprofessional core competencies, which makes it a useful teaching design.

9.
Curr Diab Rep ; 21(10): 39, 2021 09 08.
Artigo em Inglês | MEDLINE | ID: mdl-34495422

RESUMO

PURPOSE OF REVIEW: The burden of cardiometabolic diseases such as cardiovascular disease (CVD) and type 2 diabetes (T2D) is pronounced among African Americans. Research has shown that behavioral, social, metabolic, psychosocial, and genetic risk factors of CVD and T2D are closely interwoven. Approximately 20 years ago, the Jackson Heart Study (JHS) was established to investigate this constellation of risk factors. RECENT FINDINGS: Findings from neighborhood studies emphasize the importance of social cohesion and physical environment in the context CVD and T2D risk. Socioeconomic status factors such as income and education were significant predictors for CVD and T2D. Behavioral studies indicate that modifiable risk factors such as smoking, physical inactivity, lack of sleep, and poor nutrition are associated with CVD risk and all-cause mortality. Mental health also was found to be associated with CVD and T2D. Genetic influences are associated with disease etiology. This review summarizes the joint contributions of CVD and cardiometabolic risk factors in an African American population.


Assuntos
Doenças Cardiovasculares , Diabetes Mellitus Tipo 2 , Negro ou Afro-Americano , Doenças Cardiovasculares/epidemiologia , Diabetes Mellitus Tipo 2/epidemiologia , Diabetes Mellitus Tipo 2/genética , Humanos , Estudos Longitudinais , Fatores de Risco
10.
BMC Gastroenterol ; 21(1): 379, 2021 Oct 17.
Artigo em Inglês | MEDLINE | ID: mdl-34657610

RESUMO

BACKGROUND: Chemoprevention of colorectal neoplasia with aspirin and statins is under-investigated in Black patients. Since Black patients suffer disproportionately from colon cancer incidence and mortality compared to other populations, we investigated the utility of aspirin and statin in reducing advanced adenomatous polyp (AAP) risk in Black patients. METHODS: We carried out a retrospective cohort study of screening colonoscopies performed at a large urban academic center from 1/1/2011 through 12/31/2019. We analyzed self-identified Black patients with > 1 colonoscopy and no personal history of either inflammatory bowel disease or colon cancer syndromes. Our primary endpoint was first AAP development after index colonoscopy among Black patients taking both aspirin and a statin compared to those taking one or neither medication. We used multivariate logistic regression modeling to investigate our outcomes. RESULTS: We found data on chemoprophylaxis use in 560 patients. The mean observation period between index colonoscopy and AAP identification was 4 years. AAP developed in 106/560 (19%) of our cohort. We found no difference in AAP risk among Black patients taking both chemoprevention medications compared to partial or no chemoprophylaxis (20% vs 18% respectively, p = 0.49). This finding remained after adjusting for age, body mass index, and tobacco use (odds ratio 1.04, 95% CI 0.65-1.67; p = 0.87). CONCLUSIONS: Short-term aspirin-statin chemoprevention did not reduce the risk of AAP development in our cohort of Black patients. Larger and long-term prospective investigations are needed to investigate the utility of chemoprophylaxis in this population. TRIAL REGISTRATION: Not applicable.


Assuntos
Pólipos Adenomatosos , Inibidores de Hidroximetilglutaril-CoA Redutases , Aspirina/uso terapêutico , Quimioprevenção , Humanos , Inibidores de Hidroximetilglutaril-CoA Redutases/uso terapêutico , Estudos Prospectivos , Estudos Retrospectivos
11.
Geophys Res Lett ; 48(8): e2021GL092395, 2021 Apr 28.
Artigo em Inglês | MEDLINE | ID: mdl-34230715

RESUMO

Intensive observations and WRF-Chem simulations are applied in this study to investigate the adverse impacts of regional transport on the PM2.5 (fine particulate matter; diameter ≤2.5 µm) changes in Shanghai during the Coronavirus Disease 2019 lockdown. As the local atmospheric oxidation capacity was observed to be generally weakened, strong regional transport carried by the frequent westerly winds is suggested to be the main driver of the unexpected pollution episodes, increasing the input of both primary and secondary aerosols. Contributing 40%-80% to the PM2.5, the transport contributed aerosols are simulated to exhibit less decreases (13.2%-21.8%) than the local particles (37.1%-64.8%) in urban Shanghai due to the lockdown, which largely results from the less decreased industrial and residential emissions in surrounding provinces. To reduce the influence of the transport, synergetic emission control, especially synergetic ammonia control, measures are proved to be effective strategies, which need to be considered in future regulations.

12.
Prev Chronic Dis ; 18: E42, 2021 05 06.
Artigo em Inglês | MEDLINE | ID: mdl-33964124

RESUMO

INTRODUCTION: Perceived and actual access to healthy foods may differ in urban areas, particularly among Black people. We assessed the effect of objective and perceived neighborhood food access on self-reported cardiovascular disease (CVD) among Black people living in areas of high risk and low risk for the disease in Atlanta, Georgia. We hypothesized that perceived and objective food access would independently predict self-reported CVD. METHODS: We used survey data from the Morehouse-Emory Cardiovascular (MECA) Center for Health Equity Study. Study participants consisted of 1,402 Black adults, aged 35 to 64, residing in urban Atlanta census tracts with high rates or low rates of CVD. We assessed perceived neighborhood healthy food access by self-reported selection and quality of produce and low-fat food options. We assessed objective food access by the 2015 US Department of Agriculture Food Access Research Atlas. Low access was defined as census tracts with at least 500 people living more than 1 mile from a large food retailer. Self-reported CVD included related conditions and/or procedures. We used multilevel logistic models adjusted for demographic characteristics to examine the association between objective and perceived food access and self-reported CVD. RESULTS: Overall, self-reported CVD was not significant for perceived (odds ratio = 0.87; 95% CI, 0.59-1.29) or objective (odds ratio = 0.74; 95% CI, 0.48-1.12) healthy food access. Similar results were obtained among adults living in areas with higher-than-expected rates of CVD. CONCLUSION: Results of this study suggest the odds for self-reported CVD events were not significantly affected by perceived or objective access to healthy foods.


Assuntos
Doenças Cardiovasculares , Equidade em Saúde , Adulto , Negro ou Afro-Americano , Doenças Cardiovasculares/epidemiologia , Censos , Humanos , Características de Residência
13.
Med Res Rev ; 40(6): 2089-2113, 2020 11.
Artigo em Inglês | MEDLINE | ID: mdl-32474970

RESUMO

Autophagy is a highly conserved intracellular degradation process that plays a crucial role in cell survival and stress reactions as well as in cancer development and metastasis. Autophagy process involves several steps including sequestration, fusion of autophagosomes with lysosomes and degradation. Forkhead box O (FOXO) transcription factors regulate the expression of genes involved in cellular metabolic activity and signaling pathways of cancer growth and metastasis. Recent evidence suggests that FOXO proteins are also involved in autophagy regulation. The relationship among FOXOs, autophagy, and cancer has been drawing attention of many who work in the field. This study summarizes the role of FOXO proteins and autophagy in cancer growth and metastasis and analyzes their potential roles in cancer disease management.


Assuntos
Autofagia , Neoplasias , Fatores de Transcrição Forkhead/metabolismo , Humanos , Lisossomos/metabolismo , Transdução de Sinais
14.
J Cell Mol Med ; 24(11): 6208-6219, 2020 06.
Artigo em Inglês | MEDLINE | ID: mdl-32347651

RESUMO

Uveal melanoma (UM) is a highly invasive intraocular malignancy with high mortality. Presently, there is no FDA-approved standard for the treatment of metastatic UM. Pristimerin is a natural quinine methide triterpenoid compound with anti-angiogenic, anti-cancer and anti-inflammatory activities. However, Pristimerin potential cytotoxic effect on UM was poorly investigated. In the present study, we found the migration and invasion of UM-1 cells were inhibited by Pristimerin which also caused a rapid increase of ROS, decreased mitochondrial membrane potential, induced the accumulation of cells in G0/G1 phase, ending with apoptotic cell death. Pristimerin inhibited Akt and FoxO3a phosphorylation and induced nuclear accumulation of FoxO3a in UM-1 cells, increased the expression of pro-apoptotic proteins Bim、p27Kip1 , cleaved caspase-3, PARP and Bax, and decreased the expression of Cyclin D1 and Bcl-2. LY294002 or Akt-siRNA inhibited the PI3K/Akt/FoxO3a pathway and promoted the Pristimerin-induced apoptosis, while Pristimerin effects were partially abolished in FoxO3a knockdown UM-1 cell cultures. Taken together, present results showed that Pristimerin induced apoptotic cell death through inhibition of PI3K/Akt/FoxO3a pathway in UM-1 cells. These findings indicate that Pristimerin may be considered as a potential chemotherapeutic agent for patients with UM.


Assuntos
Apoptose/efeitos dos fármacos , Proteína Forkhead Box O3/metabolismo , Melanoma/metabolismo , Melanoma/patologia , Triterpenos Pentacíclicos/farmacologia , Fosfatidilinositol 3-Quinases/metabolismo , Proteínas Proto-Oncogênicas c-akt/metabolismo , Transdução de Sinais/efeitos dos fármacos , Neoplasias Uveais/metabolismo , Neoplasias Uveais/patologia , Caspase 3/metabolismo , Ciclo Celular/efeitos dos fármacos , Linhagem Celular Tumoral , Movimento Celular/efeitos dos fármacos , Núcleo Celular/efeitos dos fármacos , Núcleo Celular/metabolismo , Humanos , Invasividade Neoplásica , Triterpenos Pentacíclicos/química , Fosforilação/efeitos dos fármacos , Poli(ADP-Ribose) Polimerases/metabolismo , RNA Interferente Pequeno/metabolismo , Proteína X Associada a bcl-2/metabolismo
15.
J Cell Mol Med ; 23(7): 4829-4838, 2019 07.
Artigo em Inglês | MEDLINE | ID: mdl-31111658

RESUMO

The damage of vascular endothelial cells induced by oxidative stress plays an important role in the pathogenesis of atherosclerosis. Dihydromyricetin (DMY) is considered as a natural antioxidant. However, the mechanism of DMY on endothelial cell injury induced by oxidative stress remains unclear. In this study, we found that DMY could reduce the oxidative damage of HUVECs induced by sodium nitroprusside (SNP), HUVECs pre-treated with DMY suppressed SNP-induced apoptosis by reduced ROS overproduction of intracellular, decreased MDA level and elevated the superoxide dismutase activity. Meanwhile, we found that DMY could promote the expression of phosphorylated FoxO3a and Akt, and affect the nuclear localization of FoxO3a, when treated with the PI3K inhibitor LY294002, the effect of DMY was blocked. These data suggest that DMY protects HUVECs from oxidative stress by activating PI3K/Akt/FoxO3a signalling pathway. Therefore, DMY may have great therapeutic potential as a new drug for atherosclerosis.


Assuntos
Citoproteção/efeitos dos fármacos , Flavonóis/farmacologia , Proteína Forkhead Box O3/metabolismo , Células Endoteliais da Veia Umbilical Humana/patologia , Nitroprussiato/farmacologia , Estresse Oxidativo/efeitos dos fármacos , Fosfatidilinositol 3-Quinases/metabolismo , Proteínas Proto-Oncogênicas c-akt/metabolismo , Morte Celular/efeitos dos fármacos , Cromonas/farmacologia , Flavonóis/química , Células Endoteliais da Veia Umbilical Humana/efeitos dos fármacos , Células Endoteliais da Veia Umbilical Humana/metabolismo , Humanos , Modelos Biológicos , Morfolinas/farmacologia , Fosforilação/efeitos dos fármacos , Substâncias Protetoras/farmacologia , Transporte Proteico/efeitos dos fármacos , Transdução de Sinais/efeitos dos fármacos
16.
BMC Bioinformatics ; 19(Suppl 9): 286, 2018 Aug 13.
Artigo em Inglês | MEDLINE | ID: mdl-30367584

RESUMO

BACKGROUND: In bioinformatics, network alignment algorithms have been applied to protein-protein interaction (PPI) networks to discover evolutionary conserved substructures at the system level. However, most previous methods aim to maximize the similarity of aligned proteins in pairwise networks, while concerning little about the feature of connectivity in these substructures, such as the protein complexes. RESULTS: In this paper, we identify the problem of finding conserved protein complexes, which requires the aligned proteins in a PPI network to form a connected subnetwork. By taking the feature of connectivity into consideration, we propose ConnectedAlign, an efficient method to find conserved protein complexes from multiple PPI networks. The proposed method improves the coverage significantly without compromising of the consistency in the aligned results. In this way, the knowledge of protein complexes in well-studied species can be extended to that of poor-studied species. CONCLUSIONS: We conducted extensive experiments on real PPI networks of four species, including human, yeast, fruit fly and worm. The experimental results demonstrate dominant benefits of the proposed method in finding protein complexes across multiple species.


Assuntos
Algoritmos , Biologia Computacional/métodos , Mapeamento de Interação de Proteínas/métodos , Proteínas/metabolismo , Animais , Caenorhabditis elegans/metabolismo , Drosophila/metabolismo , Humanos , Proteínas/química , Saccharomyces cerevisiae/metabolismo , Especificidade da Espécie
17.
J Mol Cell Cardiol ; 112: 40-48, 2017 11.
Artigo em Inglês | MEDLINE | ID: mdl-28870504

RESUMO

Endothelial dysfunction is an early stage of atherosclerosis. We recently have shown that 25-hydroxycholesterol found in atherosclerotic lesions could impair endothelial function and vasodilation by uncoupling and inhibiting endothelial nitric oxide synthase (eNOS). 1-Palmitoyl-2-(5-oxovaleroyl)-sn-glycero-3-phosphocholine (POVPC), the oxidation product of oxidized low-density lipoprotein, is another proinflammatory lipid and has also been found in atherosclerotic lesions. However, whether POVPC promotes atherosclerosis like 25-hydroxycholesterol remains unclear. The purpose of this study was to explore the effects of POVPC on endothelial function and vasodilation. Human umbilical vein endothelial cells (HUVECs) were incubated with POVPC. Endothelial cell proliferation, migration and tube formation were measured. Nitric oxide (NO) production and superoxide anion generation (O2-) were determined. The expression and phosphorylation of endothelial nitric oxide synthase (eNOS), AKT, PKC-ßII and P70S6K as well as the association of eNOS and heat shock protein 90 (HSP90) were detected by immunoblotting and immunoprecipitation. Endothelial cell apoptosis was monitored by TUNEL staining. The expression of Bcl-2, Bax, and Cleaved Caspase 3 were detected by immunoblotting. Finally, aortic ring from C57BL6 mice were isolated and treated with POVPC and the endothelium-dependent vasodilation was evaluated. POVPC significantly inhibited HUVECs proliferation, migration, tube formation, decreased NO production but increased O2- generation. POVPC inhibited the phosphorylation of Akt and eNOS at Ser1177, increased activation of PKC-ßII, P70S6K and the phosphorylation of eNOS at Thr495, reduced the association of HSP90 with eNOS. Meanwhile, POVPC induced endothelial cell apoptosis by inhibiting Bcl-2 expression, increasing Bax and cleaved caspase-3 expressions as well as caspase-3 activity and impaired endothelium-dependent vasodilation. These data demonstrated that POVPC impaired endothelial function by uncoupling and inhibiting eNOS as well as by inducing endothelial cell apoptosis. Therefore, POVPC may play an important role in the development of atherosclerosis and may be considered as a potential therapeutic target for atherosclerosis.


Assuntos
Células Endoteliais da Veia Umbilical Humana/patologia , Óxido Nítrico Sintase Tipo III/metabolismo , Éteres Fosfolipídicos/farmacologia , Vasodilatação/efeitos dos fármacos , Apoptose/efeitos dos fármacos , Movimento Celular/efeitos dos fármacos , Proliferação de Células/efeitos dos fármacos , Proteínas de Choque Térmico HSP90/metabolismo , Células Endoteliais da Veia Umbilical Humana/efeitos dos fármacos , Humanos , Neovascularização Fisiológica/efeitos dos fármacos , Óxido Nítrico/metabolismo , Oxirredução , Fosfatidilinositol 3-Quinases/metabolismo , Proteína Quinase C beta/metabolismo , Proteínas Proto-Oncogênicas c-akt/metabolismo , Proteínas Quinases S6 Ribossômicas 70-kDa/metabolismo , Transdução de Sinais/efeitos dos fármacos , Superóxidos/metabolismo
18.
Yi Chuan ; 38(6): 569-580, 2016 06 20.
Artigo em Inglês | MEDLINE | ID: mdl-27655318

RESUMO

SQUAMOSA PROMOTER BINDING PROTEIN-box (SBP-box) family genes encoding plant-specific transcription factors are involved in many aspects of crop genetic improvement such as yield, plant-type and stress-resistance. The SBP-box gene family have important practical applications. In this study, 18 SBP-box genes were identified from the reference genome of sorghum (Sorghum bicolor L.) using bioinformatics. These genes distributed on nine chromosomes while eight of them located in the segmental duplication region. Phylogenetic reconstruction resulted in six subfamilies of SBP-box genes, among which SbSBP12, SbSBP3 and SbSBP15 are orthologous to ZmLG1, ZmTGA1 and ZmUB2/3 in corn, respectively. RNA-seq data analysis indicated that SbSBP-box genes show the highest expression level in primordial inflorescences. Moreover, SbSBP9 and SbSBP17 exhibited a tissue specific expression in primordial inflorescences. The expression levels of SbSBP5, SbSBP8 and SbSBP18 were increased in response to exogenous ABA and PEG,indicating that SbSBP-box genes are involved in the defense response against abiotic stresses in sorghum. This research provides references for cloning important genes in SbSBP-box gene family. Genes identified in this study could be considered as candidate genes for genetic improvement of sorghum.


Assuntos
Regulação da Expressão Gênica de Plantas/genética , Genes de Plantas/genética , Genoma de Planta/genética , Família Multigênica/genética , Proteínas de Plantas/genética , Sorghum/genética , Cromossomos de Plantas/genética
19.
Ethn Dis ; 25(2): 220-5, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-26118152

RESUMO

OBJECTIVE: To estimate behavior risk factors and diabetes preventive health care among Asian/Pacific Islanders (API) diagnosed with type 2 diabetes. DESIGN: Population-based telephone survey. PARTICIPANTS: APIs and non-Hispanic Whites (NHW) surveyed in the 2009 Behavioral Risk Factor Surveillance System (BRFSS) data. MAIN OUTCOME MEASURES: Diabetes preventive health care (taking insulin, taking educational classes, receiving flu shot and pneumococcal vaccine, blood sugar check, cholesterol check, HbA1C check, and eye and foot examination), behavior risk factors (fruit and vegetable consumption, physical exercise, smoking and binge drinking). RESULTS: By constructing the logistic regression model, odds ratios (OR) were calculated to compare the risk factors and preventive care between NHW and API groups. Compared with NHW, the APIs were significantly less likely to check their blood sugar at least once a day (OR = .59, 95% CI = .393-.886), got flu shots (OR = .597, 95% CI = .394-.903) and have had pneumococcal vaccines (OR = .455, 95% CI = .296-.7). The results also showed that APIs eat more fruits, are more likely to be physically active, and are less likely to participate in binge drinking and smoking. There are no differences between these two groups for diabetes education, having seen professionals for diabetes within past year, having cholesterol or HbA1C checked in past year, and having an eye or foot exam in past year. CONCLUSIONS: Our results can inform the best intervention strategies to deliver diabetes preventive health care services for the APIs with type 2 diabetes and to help NHWs reduce risk factors for diabetes.


Assuntos
Asiático/psicologia , Diabetes Mellitus Tipo 2/prevenção & controle , Comportamentos Relacionados com a Saúde/etnologia , Disparidades em Assistência à Saúde/etnologia , Havaiano Nativo ou Outro Ilhéu do Pacífico/psicologia , População Branca/psicologia , Sistema de Vigilância de Fator de Risco Comportamental , Diabetes Mellitus Tipo 2/etnologia , Diabetes Mellitus Tipo 2/psicologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Ilhas do Pacífico/etnologia , Serviços Preventivos de Saúde , Fatores de Risco , Autocuidado
20.
Health Promot Pract ; 16(1): 63-71, 2015 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-24891525

RESUMO

INTRODUCTION: Training community health workers (CHWs) builds a workforce that is essential to addressing the chronic disease crisis. This article describes a highly replicable CHW training program that targets heart disease risk among African American women. BACKGROUND: African American women suffer disproportionately from heart disease mortality and morbidity. Well-trained CHWs are uniquely positioned to close this disparity gap. Method. We used a Learning Circle approach to train CHWs in heart health education. The curriculum blended web-based, self-directed learning and in-person peer coaching. CHWs learned through (a) peer-to-peer sharing, (b) problem solving and brainstorming, and (c) leadership and experiential activities. Training evaluation measures were CHWs' (a) self-confidence, (b) heart health knowledge, (c) satisfaction with training, (d) training retention, and (e) replication of training within 90 days after training. RESULTS: This training resulted in appreciable effects on four of five outcome measures. Heart health knowledge increased significantly among experienced CHWs (p = .011). CHWs were satisfied with training and retention was 100%. CHWs initiated and subsequently delivered 122 person hours of community heart health education and CHW training in their communities. DISCUSSION/CONCLUSION: CHW heart health training using Learning Circles is a practical and replicable method of training CHWs and holds significant potential for building capacity in resource-poor community organizations.


Assuntos
Negro ou Afro-Americano , Agentes Comunitários de Saúde/educação , Educação em Saúde/organização & administração , Conhecimentos, Atitudes e Prática em Saúde , Capacitação em Serviço/organização & administração , Adulto , Comportamento do Consumidor , Feminino , Cardiopatias/prevenção & controle , Humanos , Internet , Liderança , Grupo Associado , Resolução de Problemas , Fatores de Risco
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