3 research outputs found

    Structure of eukaryotic prefoldin and of its complexes with unfolded actin and the cytosolic chaperonin CCT

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    The biogenesis of the cytoskeletal proteins actin and tubulin involves interaction of nascent chains of each of the two proteins with the oligomeric protein prefoldin (PFD) and their subsequent transfer to the cytosolic chaperonin CCT (chaperonin containing TCP-1). Here we show by electron microscopy that eukaryotic PFD, which has a similar structure to its archaeal counterpart, interacts with unfolded actin along the tips of its projecting arms. In its PFD-bound state, actin seems to acquire a conformation similar to that adopted when it is bound to CCT. Three-dimensional reconstruction of the CCT:PFD complex based on cryoelectron microscopy reveals that PFD binds to each of the CCT rings in a unique conformation through two specific CCT subunits that are placed in a 1,4 arrangement. This defines the phasing of the CCT rings and suggests a handoff mechanism for PFD

    Barreras de acceso, autoreconocimiento y reconocimiento en depresi贸n y trastornos del consumo del alcohol: un estudio cualitativo

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    Introducci贸n El acceso a servicios de salud implica una din谩mica compleja, donde las condiciones de salud mental se ven especialmente desfavorecidas, debido a m煤ltiples factores relacionados con el contexto y los actores involucrados. Sin embargo, en Colombia no se ha caracterizado este fen贸meno, lo cual motiva el presente estudio. Objetivos El objetivo de este estudio fue explorar las causas que afectan el acceso a servicios de salud para la atenci贸n de la depresi贸n y el consumo riesgoso de alcohol en Colombia, de acuerdo con diversos actores involucrados en el proceso de atenci贸n. M茅todos Se condujeron entrevistas en profundidad con profesionales de la salud, administrativos, usuarios y representantes de organizaciones comunitarias en salud, en cinco instituciones de atenci贸n de primer y segundo nivel en tres regiones de Colombia. Posteriormente, para describir el acceso a la atenci贸n en salud para depresi贸n o uso riesgoso de alcohol, se codificaron extractos de entrevistas y grupos focales a trav茅s del an谩lisis del contenido, consenso de expertos y teor铆a fundamentada. Se crearon cinco categor铆as de an谩lisis: educaci贸n y conocimiento de la condici贸n de salud, estigma, falta de entrenamiento de profesionales de la salud, cultura y estructura o factores organizacionales. Resultados Caracterizamos las barreras para la falta de reconocimiento de las condiciones en salud mental que afectan el acceso a la atenci贸n de depresi贸n o consumo riesgoso de alcohol de usuarios, profesionales de la salud y personal administrativo de cinco centros de atenci贸n primaria y secundaria en Colombia. Los grupos identificaron que la falta de reconocimiento de la depresi贸n se relaciona con la poca educaci贸n o conocimiento de la poblaci贸n sobre esta condici贸n, estigma y falta de entrenamiento de los profesionales de la salud, as铆 como a la cultura. Para el consumo riesgoso de alcohol, los grupos observaron que la baja educaci贸n y el escaso conocimiento sobre esta condici贸n, as铆 como falta de capacitaci贸n de profesionales de la salud y la cultura afectan su identificaci贸n, y por lo tanto, el acceso a la atenci贸n en salud. Ni factores estructurales ni organizacionales parecieron tener un rol en el reconocimiento o autoreconocimiento de estas condiciones. Conclusiones Este estudio suministra informaci贸n esencial sobre los factores que afectan el acceso a la salud mental en el contexto colombiano. Asimismo, promueve la generaci贸n de hip贸tesis que pueden llevar al desarrollo e implementaci贸n de herramientas para mejorar la atenci贸n en el 谩mbito de la enfermedad mental.Introduction Access to healthcare services involves a complex dynamic, where mental health conditions are especially disadvantaged, due to multiple factors related to the context and the involved stakeholders. However, a characterisation of this phenomenon has not been carried out in Colombia, and this motivates the present study. Objectives The objective of this study was to explore the causes that affect access to health services for depression and unhealthy alcohol use in Colombia, according to various stakeholders involved in the care process. Methods In-depth interviews and focus groups were conducted with health professionals, administrative professionals, users, and representatives of community health organisations in five primary and secondary-level institutions in three regions of Colombia. Subsequently, to describe access to healthcare for depression and unhealthy alcohol use, excerpts from the interviews and focus groups were coded through content analysis, expert consensus, and grounded theory. Five categories of analysis were created: education and knowledge of the health condition, stigma, lack of training of health professionals, culture, and structure or organisational factors. Results We characterised the barriers to a lack of illness recognition that affected access to care for depression or unhealthy alcohol use according to users, healthcare professionals and administrative staff from five primary and secondary care centres in Colombia. The groups identified that lack of recognition of depression was related to low education and knowledge about this condition within the population, stigma, and lack of training of health professionals, as well as to culture. For unhealthy alcohol use, the participants identified that low education and knowledge about this condition, lack of training of healthcare professionals, and culture affected its recognition, and therefore, healthcare access. Neither structural nor organisational factors seemed to play a role in the recognition or self-recognition of these conditions. Conclusions This study provides essential information for the search for factors that undermine access to mental health in the Colombian context. Likewise, it promotes the generation of hypotheses that can lead to the development and implementation of tools to improve care in the field of mental illness.Revista Nacional - Indexad
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