Alteraçoes cutâneas induzidas por laser

Orientador: Luiz Fernando Bleggi TorresTese (doutorado) - Universidade Federal do Paraná, Setor de Ciencias da Saúd

Embriologia, histologia e epidemiologia das doenças da pele em crianças

Orientador: Luiz Fernando Bleggi TorresDissertação (mestrado) - Universidade Federal do Parana, Setor de Ciencias da Saude, Programa de Pós-Graduação em Medicina InternaResumo: O objetivo do presente trabalho foi a embriologia, histologia e epidemiologia das doenças que acometem o tegumento das crianças. A embriologia, histologia e variações anatômicas da pele (experimento 1) foram estudadas através da avaliação histológica de amostras da pele da região interna da coxa direita coletadas de fetos, natimortos, neomortos, préescolares e adolescentes submetidos a autópsia no Hospital de Clínicas, UFPR. Os aspectos epidemiológicos (experimento li) foram estudados através da revisão de 662 biópsias de pacientes pediátricos, entre 1990 e 1995, diagnosticadas no Serviço de Anatomia Patológica do Hospital de Clínicas, UFPR. Os resultados do experimento 1 foram descritos através de esquemas e fotomicrografias e comparados com dados de literatura. Os resultados do experimento li revelaram predomínio de pacientes com idades oscilando de 7 a 15 anos. Há uma prevalência maior de lesões císticas incluindo cistos epidermóides e dermóides, e lesões tumorais incluindo pilomatricoma e angiomas, em relação as dermatoses neste estudo. Estes resultados são comparados com os de outras séries publicadas. XIVAbstract: The aim of the present study was the embriology, histology and epidemiology of cutaneous diseases in childhood. The embriological and histological observations (experiment 1), including the study of the anatomical variations of the normal skin, were carried out through the microscopical analysis of fragments of the skin obtained from the internai right thigh of fetus, stillborns, infants and adolecents autopsied at Hospital de Clínicas, UFPR. lhe epidemiological observations (experiment li) were based on the study of 662 skin biopsies that were reviewed from the files of the Division of Anatomic Pathology, Hospital de Clínicas, UFPR between 1990 and 1995. The results of experiment 1 were presented through schemes and pictures, and compared with previous observations reported in the literature. The results of experiment li revealed that there was predominance of skin biopsies from patients with age ranging from 7 to 15 years old. The most prevalent pathological diagnosis in this study were the cystic lesions including epidermoid and dermoid cysts, and benign tumours represented mainly by pylomatrixoma and angiomas. These results were also compared with the world literature

Segmented markets, cooperative behaviours: innovation in the production of brazilian coffee

The present article aims to discuss some the organizational and institutional aspects that have became the basis for the development of coffee as a non-commodity product in Brazil. It is expected that due to new patterns of coffee consumption, a new strategy permits the competitive reinsertion of Brazilian coffee into the international markets. The suggested methods, interviews to the driving stakeholders and observation of the respective networking systems, are applied in the different stages of the supply chain in order to demonstrate that the production conditions are imposing specific strategic interrelationships between the roasting and the grinding industry and among the several intervenient actors. It is observed that most of such processes take place within a new context of competition where innovation, segmentation and product differentiation are more important factors for the international market than cost and price reductions, thus thereby demanding a serious redefinition the companies’ strategy dynamics.Fundação para a Ciência e Tecnologi

Collaborative design methodologies for clothing flat modeling

This article reflects on the importance of collaborative design methodologies in the construction of new configurations for teaching flat clothing modeling. Within the field of teaching fashion and clothing, but specifically in the disciplines of flat modeling, several problems can be identified regarding teaching-learning. Silva and França (2018) state that there is little perceived ability to understand the execution of the molds on the part of the students, which cause the discipline to be seen with a high degree of complexity, causing dissatisfaction, both on the part of the students and by part of the teachers who teach it. This article is based on data, four surveys carried out in fashion and clothing courses in Brazil regarding teaching-learning of the flat modeling technique and from the gaps identified in its results, we will substantiate the paths taken by this research.Based on the assumption that the understanding of the reasons and the difficulties present in the contexts of the researches carried out on teaching and learning of flat modeling in recent years, are not due to individual and solitary actions, but to collective constructions of all the authors involved. In this work, concepts of collaborative design methodologies are explored, as innovative and effective methods of this construction. Understanding that, through collaborative means, it is possible to contribute with activities and solutions from different fields, starting from a new perspective when conceiving formal concepts and solutions.Thus, the question that guides this study and which will be answered is: how can collaborative design methodologies contribute to the flat modeling of clothing? The article is structured in four topics, which aims to clarify points and difficulties raised in research that were carried out in recent years on teaching and learning of flat modeling through a systematic literature review that points out data on the state of the art of flat modeling and its relationship with collaborative methodologies

Histologic and Histomorphometric Analysis of Posterior Region of the Human Temporomandibular Disc

Objective The aim of this study was to analyze histologic and histomorphometric features of the articular disc in groups with and without disc displacement. Study design A sample of 39 temporomandibular joints TMJs (31 case specimens, 8 control specimens) from 28 patients (mean age 31.2 years) were recruited for this study. The patients were considered to be affected and treated surgically with disc repositioning when presenting painful clinical signs of disc displacement after unsuccessful nonsurgical treatment for at least 6 months. Of the control patients, 4 presented condyle fracture which required opening to be reduced for treatment, and 4 displayed active condyle hyperplasia. The posterior region of the disc was removed and sent for histologic and histomorphometric analysis. Histologic (hematoxylin-eosin) and histomorphometric (picro-Sirius red) analyses were performed. Statistically significant differences between the analyzed groups were accessed through the chi-squared test (P ≤ .05). The Mann-Whitney U test was used to observe the differences between mean values when variables did not present normal distribution [Kolmogorov-Smirnov(a) test]. Results There were no significant differences between the groups in relation to the parameters studied by histologic and histomorphometric analysis (using or not using polarization). Conclusions To the limits of this study, there were no significant histologic and histomorphometric differences in the articular disc between groups with and without TMJ dysfunction

FasL Expression in Articular Discs of Human Temporomandibular Joint and Association with Osteoarthrosis

Background Apoptosis is a programme of cell death which does not induce an inflammatory response. Recent previous research has suggested a correlation between temporomandibular internal derangement and apoptosis. Fas ligand (FasL) is an apoptosis‐inducing factor, known to trigger apoptosis through distinct signal pathways. This study aims to examine, by immunohistochemistry, the expression of FasL in temporomandibular joint (TMJ) articular discs of patients with anterior disc displacement with reduction (ADDwR) and without reduction (ADDwoR) in patients with and without osteoarthrosis (OA). Methods Forty‐two (n = 42) TMJ articular discs were divided into two cut‐offs: (i) 8 control, 17 ADDwR, 17 ADDwoR, and (ii) without OA (n = 25) and with OA (n = 17). The area of immunostaining was compared statistically between groups (P \u3c 0.05). Results Statistically significant differences were found in the expression of FasL in TMJ discs between the three groups (P = 0.001). ADDwR presented significant higher FasL expression when compared with ADDwoR (P \u3c 0.001). Significant higher FasL expression was observed in the group without OA (P = 0.001). All patients without OA presented ADDwR, while all the patients with OA presented ADDwoR. Conclusion A higher area of in situ immunostaining of FasL was found in temporomandibular discs with reduction, which is the less severe condition. Moreover, a reduced expression of FasL in the discs of patients with osteoarthrosis was found, suggesting that some aspects of apoptosis might underlie the progression of TMJ disorders

Effects of rosiglitazone on contralateral iliac artery after vascular injury in hypercholesterolemic rabbits

<p>Abstract</p> <p>Background</p> <p>The objective was to evaluate the effects of rosiglitazone on iliac arteries of hypercholesterolemic rabbits undergoing balloon catheter injury in the contralateral iliac arteries.</p> <p>Methods</p> <p>White male rabbits were fed a hypercholesterolemic diet for 6 weeks and divided into two groups as follows: rosiglitazone group, 14 rabbits treated with rosiglitazone (3 mg/Kg body weight/day) during 6 weeks; and control group, 18 rabbits without rosiglitazone treatment. All animals underwent balloon catheter injury of the right iliac artery on the fourteenth day of the experiment.</p> <p>Results</p> <p>There was no significant difference in intima/media layer area ratio between the control group and the rosiglitazone group. Rosiglitazone did not reduce the probability of lesions types I, II, or III (72.73% vs. 92.31%; <it>p </it>= 0.30) and types IV or V (27.27% vs. 7.69%; <it>p </it>= 0.30). There were no differences in the extent of collagen type I and III deposition or in the percentage of animals with macrophages in the intima layer. The percentage of rabbits with smooth muscle cells in the intima layer was higher in rosiglitazone group (<it>p </it>= 0.011).</p> <p>Conclusion</p> <p>These findings demonstrate that rosiglitazone given for 6 weeks did not prevent atherogenesis at a vessel distant from the injury site.</p

Primary Diffuse Large B Cell Lymphoma Mimicking Hyperplastic Reactive Lesion (Lymphoma of the Oral Cavity)

Objective. To report a case of a challenging oral diagnosis involving a primary diffuse large B cell lymphoma of the oral cavity mimicking a hyperplastic reactive lesion. Case Report. A 72-year-old male patient was referred to the Department of Stomatology presenting a proliferative nodular lesion in the anterior region of the mandible involving the anterior teeth. The clinical examination revealed anterior teeth affected by periodontal disease, suggesting the nodular cession hyperplastic reaction. Incisional biopsy was performed under local anesthesia. The histopathological examination revealed a diffuse proliferation of atypical large lymphoid cells. The tumor cells showed immunopositivity for CD20 and Ki67 (100%) and negativity for CD3, CD30, and CD15. The diagnosis of diffuse large B cell lymphoma was established. The patient underwent chemotherapy and progressed to death after nine months. Conclusion. Lymphomas of the oral cavity are rare and may have nonspecific clinical features, mimicking inflammatory and reactive lesions. Therefore, a detailed clinical evaluation associated with histopathological and immunohistochemical analysis should be performed to enable early and accurate diagnoses in suspected oral lesions