Análise da expressão dos receptores HER-2 e sua correlação clínica em pacientes com neoplasia gástrica do setor de Oncologia do Hospital de Clínicas da Universidade Federal de Uberlândia-UFU

Introduction: Gastric cancer is currently the fourth higher cancer mortality rate among men in the world and the fifth among women, despite the progressive advances in oncology. The identification of tumor receptors and the development of target-drugs to block them has contributed to increased survival and quality of life of patients, but it becomes important to know the tumor profile of the population being treated, avoiding burdening treatment with examinations and treatments that are not cost-effective. Objective: To evaluate the profile of the population with gastric cancer treated in five years at the Clinical Hospital of the Federal University of Uberlândia and verify the correlation between overexpression of HER-2 receptor with an unfavorable prognosis. Methods: 203 records with gastric cancer were selected through the system database, attending a five-year period, of which 117 paraffin blocks were available for immunohistochemical assessment of HER2 receptor. Results: 2.6% of tumors showed overexpression of HER2, considering for this study two crosses as positive. There was no statistically significant difference in correlation between expression of the HER2 receptor with age, gender, tumor grade, local involvement, Lauren classification, Borrmann classification or staging. Conclusion: For this studied population, we can conclude that there is no need to employ HER2 blockers with high cost as a target-therapy in patients with gastric cancer, since no clinical benefit probably will be obtained due to a low percentage of these patients that demonstrated superexpression of this receptor or even there is no patients with gastric cancer with superexpression of HER2 with more than three crosses of positivity in immunochemistry

Inter-relação entre lesão cervical não cariosa e comprometimento periodontal: diagnóstico, tratamento e previsibilidade - estudo clínico prospectivo e laboratorial

The coexistence of gingival recession (GR) with root coverage indication and non-carious cervical lesions (LCNC) generates the need for a protocol that respects and promotes health of dental and periodontal tissues and allows treatment predictability. The main objectives of this theses were: (1) verify, through clinical evaluations, the connective tissue graft for root coverage on direct and indirect restorations made of ceramic resin; (2) analyze the influence of the battery level of the LED curing unit in the composite resin characteristics; (3) assess the influence of restorative materials, composite resin and ceramics, on the viability of gingival fibroblasts from primary culture. Nine patients with good oral hygiene and occlusal stability diagnosed with LCNCs the anterior teeth including premolars associated with gingival recession (class I and II of Miller) and only gingival recession were selected. After initial clinical examination, occlusal adjustment was performed and the patients had their teeth randomized allocated on direct composite resin restoration of LCNC, polishing and GR treatment with connective tissue graft and advanced coronally flap CR group (n = 15); and indirect ceramic restoration of the LCNC's and GR treatment (CTG+CAF) Group C (n = 15). The GR presented teeth with no clinically formed LCNCs cavity were treated using (CTG+CAF) being the control group (n = 15). Sorption and solubility tests, analysis of the degree of conversion and diametral tensile strength were performed in composite resin samples (n = 10) photoactivated by 100, 50 and 10% battery charge LED unit. The viability of fibroblasts on composite resin, ceramics and dentin disks (n = 3) was examined. Clinical follow-up was performed for three months. The data obtained at different stages were tabulated and subjected to analysis for detection of normal distribution and homogeneity. The results showed that: the LED unit with 10% battery affects the characteristics of the composite resin; restorative materials present biocompatibility with gingival fibroblasts; and the association of surgical and restorative treatment of teeth affected by NCCL and GR presents successful results at 3-month follow-up.