RESUMO
Femoral neck fracture in the absence of trauma is a rare, but known complication after hardware removal. This complication may be due to the boney defect created by the hardware removal itself, or the increase in femoral neck strain that occurs after removal of the hardware. Previous biomechanical studies have suggested that filling the defect with calcium phosphate cement after removal of hardware may prevent the development of a femoral neck fracture. However, there are no reports on the use of calcium phosphate cement after removal of hardware in the clinical setting. The purpose of this case discussion is to present the first reported case, to our knowledge, of the use of calcium phosphate cement augmentation of the boney defect after lag screw removal, and the subsequent failure resulting in atraumatic femoral neck fracture.
RESUMO
BACKGROUND: Pancreatic cancer is the most lethal digestive cancer and the fourth overall cause of cancer death in the US. Asparagus, a widely consumed savory vegetable, is a rich source of antioxidants, saponins, vitamins, and minerals. In recent years, it has been shown that components of asparagus have anticancer effects on endometrial adenocarcinoma, and in prostate, breast, and colon cancer. In pancreatic cancer, it has been shown to have an anticancer effect on the KLM1-R cell line. This study was designed to investigate if asparagus extract (AE) had any effect on the growth of a widely used pancreatic cancer cell line MDAPanc-28 and to elucidate possible molecular mechanisms behind it. MATERIALS AND METHODS: Clonogenic survival assay, proliferation, and caspase-3 activity kits were used to evaluate the effects of AE on cell survival, proliferation, and apoptosis pathway of MDAPanc-28 cells. We further investigated the possible molecular mechanisms by using reverse transcription-polymerase chain reaction. RESULTS: The colony numbers and proliferation of MDAPanc-28 cells were surprisingly increased when treated with AE. The relative caspase-3 activity in cancer cells decreased when they were treated with AE. The pro-proliferative effect of AE on MDAPanc-28 cells correlated with down-regulation of anti-proliferative molecules P21 and P53. The potential anti-apoptotic effect of AE correlated with down-regulation of the pro-apoptotic molecule Fas cell surface death receptor (FAS) and down-regulation of caspase-3 activity. CONCLUSION: AE exhibits a pro-tumor effect on MDAPanc-28 pancreatic cancer cells by down-regulation of P21, P53, and FAS.
