Resumo
Purpose: To investigate the prognostic value of 17 platelet-based prognostic scores in patients with malignant hepatic tumors after TACE therapy. Methods: In total, 92 patients were divided into death group and survival group according to long-term follow-up results. The AUC was calculated to determine the optimal cut-off values for predicting prognosis. To determine better prognostic models, platelet-based models were analyzed separately after being showed as binary according to cut-off values. Cumulative survival rates of malignant hepatic tumors were calculated using Kaplan-Meier curves and differences were analyzed by the log-rank test. Univariate and multivariate analyses were performed to identify platelet-based prognostic scores associated with overall survival. Results: Univariate analysis showed that APGA, APRI, FIB-4, FibroQ, GUCI, Kings score, Lok index, PAPAS, cirrhosis, number of tumors, vascular cancer embolus, AFP, ALP and APTT were significantly related to prognosis. A multivariate analysis showed that the APGA, number of tumors, ALP and APTT were independently associated with overall survival. Conclusion: This study showed that the APGA, a platelet-based prognostic score, was an independent marker of prognosis in patients with malignant hepatic tumors after TACE and was superior to the other platelet-based prognostic scores in terms of prognostic ability.(AU)
Assuntos
Humanos , Neoplasias Hepáticas , Neoplasias Hepáticas/diagnóstico , Neoplasias Hepáticas/terapia , Quimioembolização Terapêutica/métodos , Plaquetas , Prognóstico , ChinaResumo
To describe the hematologic values of male and female, young and adult, Swiss mice (Mus musculus). Mus musculus (n=14) were randomly selected and separated by gender. The male and female, young and adult animals were sedation to obtain a blood sample, by intracardiac route at 30, 45, 60, 75, 90, 105 and 120 days after birth. The Swiss mouse hemogram values obtained, in relation to total eosinophils, basophils, and number of platelets, there was no statistical differences according to the genders or the age of the animals. Regarding the erythrocyte, hemoglobin and hematocrit values obtained, these were higher in females. The RDW-CD and MPV values were higher in the females than in the males. CONCLUSIONS: Lymphocytes are the predominant cells in the peripheral blood. The collection of 800 µL of blood by intracardiac route, every 15 days, did not affect the health of the animals. Analyses of the blood samples contribute to the experimental models provided by the Central Animal Facility of UFMS and used by professors.(AU)
Assuntos
Animais , Hematologia/métodos , Distribuição por Idade e Sexo , Leucócitos/citologia , Eritrócitos/citologia , Camundongos/classificaçãoResumo
To investigate the effect of platelet rich fibrin (PRF) and beta tricalcium phosphate (β-TCP), alone or in combination, on bone regeneration in pig tibial defects. METHODS: Four standardized defects were prepared in both tibias of three adult male pigs. The first defect was left unfilled as a control; the others were grafted with either PRF, β-TCP or PRF mixed with β-TCP. All animals were sacrificed on the 12th postoperative week and the tibial bones were removed, histologic sections were prepared and the experimental sites were examined microscopically and stereologically. RESULTS: Histologic and stereologic examination revealed more new bone formation in the defects filled with PRF mixed β-TCP than in the defects grafted with either β-TCP or PRF alone. CONCLUSION: The platelet rich fibrin and beta tricalcium phosphate combination effectively induces new bone formation.(AU)
Assuntos
Animais , Osso e Ossos/anatomia & histologia , Cálcio/análise , Regeneração Óssea , Suínos/classificação , TíbiaResumo
The present article aimed to assess bone healing of experimental radial fractures, treated or not with autologous PRP (platelet-rich plasma), by means of radiographic and densitometric studies. Eleven dogs were randomly allocated in two experimental groups: control group (CG n=6) and PRP group (PRPG n=5). All dogs underwent radial osteotomy and osteosynthese (external skeletal fixation) of the right forelimb, in which a 2.0 mm defect was created. The gap was filled with PRP in the treated group (PRPG); while CG received no treatment. Radiographic and densitometric studies were performed immediately at the end the procedure and 14, 21, 28, 35, 45 and 60 days after the surgery (M0, M14, M21, M28, M35, M45 e M60). Statistical analysis was performed using analysis of variance with repeated measures (ANOVA) followed by Tukey test to compare means Friedman and Dunn post hoc tests to compare times within each group; and Mann-Whitney to compare groups at all times (p<0.05). Regarding time, radiographic scores and densitometric values changed significantly from moment 0 to moment 60 within the PRPG. The comparison of the two groups shows that radiographic scores changed significantly from M28 and densitometric values from M45 and M60. It can be concluded that under the conditions of this study; PRP can be used as an adjutant therapy to promote bone healing of experimental radial fractures (gap 2.0 mm) of dogs treated with external skeletal fixation.
O presente artigo teve como objetivo avaliar a cicatrização óssea de fraturas experimentais do radio de cães, tratadas ou não com o PRP autógeno, por meio de estudos radiográfico e densitométrico. Foram utilizados 11 cães, alocados aleatoriamente em dois grupos experimentais: o grupo controle (G-controle, n=6) e o grupo PRP (G-PRP, n=5). Todos os animais foram submetidos à osteotomia e osteossíntese (fixador esquelético externo) do rádio direito, gerando-se um gap de 2mm, que foi preenchido com PRP apenas no grupo G-PRP. Os estudos radiográficos e densitométricos foram realizados no pós-operatório imediato e aos 14, 21, 28, 35, 45 e 60 dias de pós-operatório (M0, M14, M21, M28, M35, M45 e M60). A análise estatística foi realizada por meio da Análise de Variância com Medidas repetidas (ANOVA) e teste de Tukey para comparação de médias; teste de Friedman seguido do teste de Dunn para comparar os momentos em cada grupo e o teste de Mann-whitney para comparar os grupos em cada momento (p<0,05). Referente à avaliação entre os momentos houve diferença significativa entre MO e M60 nas avaliações radiográficas e densitométricas dentro do grupo G-PRP. Na comparação entre os dois grupos houve diferença estatística na avaliação radiográfica a partir de M28; e na avaliação densitométrica nos momentos M45 e M60. Conclui-se, nas condições deste estudo, que o PRP pode ser utilizado como terapia adjuvante, pois promove cicatrização óssea precoce em fraturas experimentais (gap de 2,0 mm) do radio de cães tratadas com fixador esquelético externo.