Resistência mecânica de juntas coladas em madeira de Eucalyptus sp

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Análise da expressão gênica global da bactéria Xylella fastidiosa em laranja doce por microarranjos de DNA

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Estudo do comportamento biomecânico em protocolos modificados de Branemark (conceito All-on-Four): análise por extensometria linear elétrica

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Estudo da cinética de decomposição da fase martensítica na liga Cu-10%Al com adições de Ag

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Maternidade para mães trabalhadoras: depressão pós-parto, stress, rede de apoio e conjugalidade

Pós-graduação em Psicologia do Desenvolvimento e Aprendizagem - FC

Efeitos da vibração simultânea nas propriedades mecânicas de juntas de aço ASTM A131 soldadas pelo processo arame tubular (FCAW)

Pós-graduação em Engenharia Mecânica - FEG

Death-associated odors induce stress in zebrafish

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Differences in the hydroxylation pattern of flavonoids alter their chemoprotective effect against direct- and indirect-acting mutagens

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Indicadores de stress e sobrecarga em cuidadores formais e informais de pacientes oncológicos

The present study aimed to identify the presence of indicators of stress, levels of stress and overload with the formal and informal caregivers of cancer patients. Participated in the survey 33 caregivers of cancer patients in total, 16 formal and 17 informal. To collect data, we used: 1) Roadmap for characterization of participants; 2) Inventory of Stress Symptoms Lipp - ISSL and 3) Protocol Zarit Burden Interview - ZBT. The results revealed that 43 % of informal carers were in the resistance phase, 29 % in the burnout stage, 14 % at the stage of exhaustion and almost 14 % in the alert phase. Formal caregivers 25 % are in the exhaustion phase and 75 % in the resistance. The overload has also performed on a larger scale in informal than formal caregivers, 47 % to 18,7 % charge respectively. However, the results revealed no statistically significant difference between groups for the incidence of stress but indicated a difference against overloading pointing out that professional caregivers in the incidence is lower. The results suggest the need to implement support for informal and formal caregivers programs, develop coping strategies, handling the situations of overload and stress, aiming to better quality of life for the caregiver, and consequently for the patient who is receiving care.

Mechanical strain induces the production of spheroid mineralized microparticles in the aortic valve through a RhoA/ROCK-dependent mechanism

Calcific aortic valve disease (CAVD) is a chronic disorder characterized by an abnormal mineralization of the leaflets, which is accelerated in bicuspid aortic valve (BAV). It is suspected that mechanical strain may promote/enhance mineralization of the aortic valve. However, the effect of mechanical strain and the involved pathways during mineralization of the aortic valve remains largely unknown. Valve interstitial cells (VICs) were isolated and studied under strain conditions. Human bicuspid aortic valves were examined as a model relevant to increase mechanical strain. Cyclic strain increased mineralization of VICs by several-fold. Scanning electron microscope (SEM) and energy dispersive X-ray (EDX) analyses revealed that mechanical strain promoted the formation of mineralized spheroid microparticles, which coalesced into larger structure at the surface of apoptotic VICs. Apoptosis and mineralization were closely associated with expression of ENPP1. Inhibition of ENPP1 greatly reduced mineralization of VIC cultures. Through several lines of evidence we showed that mechanical strain promoted the export of ENPP1-containing vesicles to the plasma membrane through a RhoA/ROCK pathway. Studies conducted in human BAV revealed the presence of spheroid mineralized structures along with the expression of ENPP1 in areas of high mechanical strain. Mechanical strain promotes the production and accumulation of spheroid mineralized microparticles by VICs, which may represent one important underlying mechanism involved in aortic valve mineralization. RhoA/ROCK-mediated export of ENPP1 to the plasma membrane promotes strain-induced mineralization of VICs.