4,263 research outputs found
Lubricin Immunohistochemical Expression in Human Temporomandibular Joint Disc with Internal Derangement
Lubricin is a chondroprotective, mucinous glycoprotein which contribute to joint lubrication, especially to boundary lubrication and maintains joint integrity. The present investigation aimed to study the immunolocalization of lubricin in TMJ discs from patients affected by anterior disc displacement with reduction (ADDwR) ADDwoR. Eighteen TMJ displaced disc affected by ADDwoR were processed immunohistochemically, with a polyclonal antiâlubricin antibody, used at 1:50 working dilution. The percentage of lubricin immunopositive cells (extent scoreâ=âES) and the extent of lubricin staining of the disc extracellular matrix (ECM), were evaluated. Each sample was scored for histopathological changes. Percentage of immunostained surface disc cells was the same (ESâ=â4) in both control and ADDwOR cells, being this data not statistically significant (Pâ\u3câ0.05). In pathological specimens the percentages of lubricinâstained cells was very high with an ES of 4 respect to control specimen, and this difference was statistically significant different (Pâ\u3eâ0.05). The extracellular matrix (ECM) of discs at the disc surfaces of both pathological and normal specimens was very heavily stained (++++). Both the ES and ECM staining were not statistically correlated to the TMJ degeneration score according to the Spearmanâs rank correlation coefficient. According to our findings, a longstanding TMJ disc injury, affects lubricin expression in the TMJ disc tissue and not its surfaces, moreover, lubricin immunostaining is not correlated to TMJ disc histopathological changes
Under construction : An inquiry on the social housing policies of Stavanger, Norway
Master in Community Development and Social Innovation, VID Specialized University, Stavanger, May 2022Norway has some disadvantaged populations in the housing market. Many people live without a secure safety net of owning homes. In the Nordic welfare state context, housing policies are drawn as strategies to guarantee access to affordable and decent housing for every citizen. This study aims to evaluate such strategies aligning public policies and community development, taking as a study case the city of Stavanger. This study relies on a literature review of research publications and public documents about housing. Querying keywords were âboligsosialt, social housing, public housing, social housing in Norway and Scandinavian context, low income housing.â The guidelines recorded in public documents will be compared with their evaluation by the own literature. Data from national and local contexts and public policies will be analyzed by a SWOT analysis, whose validity and reliability rely on the public character of the implemented housing strategies. From the discussion and the SWOT analysis, I conclude that Stavanger has a demonstrated history of coping with general and local challenges. Local policies are aligned with national guidelines. The analyzed policies, documents, and literature demonstrate that the municipality has well-functioning structures and assets to direct the regionâs community development. Moreover, the integration of long-term and immediate policies guarantees the continuity of the housing policies and the obligations of the next political actors to solve the eventual problems. The SWOT analysis indicates some challenges. However, Stavanger had demonstrated competence in dealing with demographic and economic shifts. This study was conducted from the point of view of public policies. Consequently, leading actors, especially government and banking, were privileged voices. Therefore, further research should be done on disadvantaged groups from the communityâs perspective. Different results may show gaps, but policy analysis is a first step to addressing the needs of the disadvantaged population.published version
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Apoptosis in Displaced Temporomandibular Joint Disc with and without Reduction: An Immunohistochemical Study
Internal derangement (ID) of the temporomandibular joint (TMJ) is due to an abnormal relationship of the articular disc to the mandibular condyle, glenoid fossa and articular eminence. The two most common types of internal derangement are anterior disc displacement with (ADDwR) and without reduction (ADDwoR). Disc displacement is associated with degenerative tissue changes. The histological features of discs from patients with TMJ ID reflect a general remodelling caused by abnormal loading. A correlation has been demonstrated between TMJ ID and apoptosis. Few investigations have addressed the role of apoptosis or caspase activity in TMJ ID. The apoptosis activation process was studied in different areas of discs from 18 patients with ID (both ADDwR and ADDwoR) and four cadavers (controls), with emphasis on the expression of caspase 3, whose activation makes the death process irreversible. The results showed a greater proportion of caspase 3âpositive cells in ADDwR and ADDwoR than in control discs. Immunopositivity also varied between disc areas; in particular, in ADDwoR sections labelled cells were significantly more numerous (Pâ\u3câ0.01) in the posterior disc attachment than in the anterior and intermediate bands. In addition, a significantly greater proportion of labelled cells was seen in the anterior (+) and intermediate (++) band of ADDwR compared with ADDwoR discs both bands (Pâ\u3câ0.05). These data suggest the importance of programmed cell death in the progression of TMJ ID
Occurrence and Regional Distribution of TRAIL and DR5 on Temporomandibular Joint Discs: Comparison of Disc Derangement with and without Reduction
Background Tumor necrosis factor (TNF)ârelated apoptosis-inducing ligand (TRAIL) is an apoptosis-inducing member of the TNF gene family which triggers apoptotic signals by interaction with its receptors. It has been suggested to be a major contributing factor to tissue degeneration. Objective The present study investigated, through immunohistochemistry, the regional expression of TRAIL and in temporomandibular joint (TMJ) disc of anterior disc displacement with reduction (ADDwR) and without reduction (ADDwoR) patients, to help determine the relationship between TMJ disc displacement and apoptosis. Study design We studied 18 TMJ diseased discs affected by disc displacement without or with reduction and 4 normal TMJ discs. Specimens were processed for immunohistochemistry to evaluate TRAIL and its receptor DR5 expression. Results Disc tissues from internal derangements (both ADDwR and ADDwoR) exhibited a much higher percentage of TRAIL- and DR5-positive cells as well as stain intensity compared with normal tissue though with regional variation according to the portion of the disc. There was a significantly higher percentage of stained cells in the posterior disc attachment compared with the anterior or intermediate bands of both ADDwR and ADDwoR discs for TRAIL and DR5. Conclusions TRAIL and DR5 are overexpressed in displaced human TMJ disc, especially in the posterior disc attachment. These results suggest a possible pivotal role of the TRAIL/DR5 system in TMJ disc degeneration
O uso estratĂ©gico do ato de asserção num corpus de âhistĂłrias de vidaâ realizadas em contexto de entrevista
Taking as reference an oral corpus of life histories collected in interviews, this paper proposes an analysis of the act of assertion within the framework of speech acts theory and of P. Attal's propositions. First, we consider the functioning of evaluative assertions with positive axiological value. Second, we focus on assertions with a negative axiological value and we analyse the interactional role of fuzziness markers: diminutives as softeners, adjectives' evaluative suffixes, sequences of justification as âmitigatory commentsâ and tag questions. Finally, we study the strategic use of assertions with impersonal references and of agreement assertions with Extreme Case Formulations.info:eu-repo/semantics/publishedVersio
âOlhe estamos mesmo no fecho da emissĂŁoâ: sequĂȘncias prototĂpicas de actos ilocutĂłrios, variaçÔes e estratĂ©gias discursivas no (prĂ©-fecho) e fecho de interacçÔes verbais na rĂĄdio
Tendo por base um corpus constituĂdo por interacçÔes verbais presentes em cinco programas de rĂĄdio, realizados em perĂodo nocturno, com uma clara matriz dialogal, procederemos, em primeiro lugar, ao levantamento das sequĂȘncias de actos de discurso em função do momento de fecho da interacção conversacional e, em segundo lugar, procuraremos verificar se a sequĂȘncia de actos de discurso se configura em padrĂ”es de organização sequencial. A constatação da existĂȘncia de regularidades discursivas permite-nos analisar as estratĂ©gias discursivas (Gumperz, 1982) que os interlocutores accionam em função das trocas interactivas e interlocutivas especĂficas.
Procuraremos demonstrar que o discurso em programas de rĂĄdio nocturnos Ă© constituĂdo por prĂĄticas discursivas singulares, fortemente ritualizadas e com uma componente interactiva e interlocutiva bem marcada, apresentando, nas sequĂȘncias de prĂ©-fecho e fecho, dispositivos especĂficos do trabalho de âacomodação intersubjectivaâ.info:eu-repo/semantics/publishedVersio
A problemĂĄtica existencial do ser humano
VergĂlio Ferreira (1916-1996) foi um existencialista por natureza. A sua produção literĂĄria
recebeu influĂȘncias de Sartre, Marco AurĂ©lio, Santo Agostinho, Pascal, DostoiĂ©vski, Jaspers,
Kant e Heidegger, refletindo a sua preocupação com a vida e a cultura do Homem.
Em 1993 edita Na Tua Face, uma das suas obras mais exemplares, em que desenvolve uma
reflexĂŁo aprofundada acerca da Beleza e da sua efemeridade. Trata-se de um romance que
retrata a vida do personagem principal, Daniel, que conhece BĂĄrbara, o que lhe provoca um
intenso deslumbramento, mas casa com Ăngela, mesmo nĂŁo a amando ou amando de outra
forma, e continua a sua vida, convivendo atravĂ©s da memĂłria com o amor impossĂvel que
sente por Bårbara, em lembranças que o atormentam
O âenvolvimento conversacionalâ no momento de desenvolvimento de interacçÔes verbais na rĂĄdio: sequĂȘncias de actos ilocutĂłrios e âestratĂ©gias de alinhamentoâ em programas de rĂĄdio especĂficosâ
Tendo por base um corpus constituĂdo por interacçÔes verbais presentes em cinco programas de rĂĄdio portugueses (Almeida, 2005), procederemos ao levantamento dos padrĂ”es de organização sequencial no momento estrutural de desenvolvimento da interacção: a nĂvel local, analisaremos a selecção, operada pelos participantes, das estratĂ©gias comunicativas especĂficas do discurso institucional de rĂĄdio e, a nĂvel global ou macroestrutural, estudaremos a coerĂȘncia pragmĂĄtico-funcional do discurso que diz respeito fundamentalmente Ă s dimensĂ”es sequenciais dos actos ilocutĂłrios
A descrição da construção do sentido empreendida no desenvolvimento permitir-nos-ĂĄ o levantamento das estratĂ©gias discursivas mais relevantes no discurso radiofĂłnico interactivo: o par pergunta-resposta, as âestratĂ©gias de alinhamentoâ e os dispositivos conversacionais que denotam um forte âenvolvimento conversacionalâ (Gumperz, 1982: 2-3; Tannen, 2001: 157) e que revelam a emoção nas interacçÔes.info:eu-repo/semantics/publishedVersio
Interação discursiva : o ato ilocutório de convite/proposta em contexto de ensino/aprendizagem online
Tendo por base a investigação realizada no Ăąmbito da PragmĂĄtica LinguĂstica e o funcionamento discursivo de atos ilocutĂłrios de convite, de oferta e de proposta (Almeida, 1998; 2000a), procederemos Ă anĂĄlise do modo como os fundamentos teĂłricos destes conceitos sĂŁo operacionalizados na sala de aula virtual, sendo estes atos de discurso objeto e meio de aprendizagem em fĂłruns de discussĂŁo online. Analisaremos a construção do conhecimento em ambientes virtuais de aprendizagem, tendo em consideração uma aprendizagem orientada para a resolução de problemas
Processos de figuração e manutenção da ordem interaccional: estratĂ©gias de mitigação no quadro do sistema de delicadeza desenvolvido pelos participantes de programas de rĂĄdios especĂficos
Taking as reference an oral corpus consisting of verbal interactions presented in Portuguese radio phone-in programmes, we proceed to the identification of the sequential dimensions of illocutionary acts and we study the selection, made by the participants, of the discourse strategies of politeness that avoid the threat of a Face Threatening Act (FTA) and reinforce a Face Flattering Act (FFA): opening pre-greetings or âgetting closer strategiesâ; humorous strategies to build a discursive identity; praise and wishes; the anti-orientating role of laughter; justifications (accounts) and polite requests for permission; repairing exchanges (apologies); âsoftenersâ, pre-sequences (preliminaries), âmitigation commentsâ and ârepairing exchangesâ.info:eu-repo/semantics/publishedVersio
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