RESUMEN
【Objective】 To identify the risk factors of patients of bone metastatic prostate cancer with high tumor load progressed to castration resistant prostate cancer (CRPC), establish a nomogram prediction model and evaluate its consistency and accuracy. 【Methods】 A total of 164 patients diagnosed by puncture and imaging during 2012 and 2022 were included.The general characteristics were analyzed with IBM SPSS software; the variables were screened with Cox regression; the multivariate risk factors with P<0.05 were included in the nomogram prediction model.The consistency and prediction accuracy of the model were evaluated with C-index, receiver operating characteristic (ROC) curve and calibration chart. 【Results】 In univariate analysis, initial prostate-specific antigen (PSA), prostate-specific antigen density (PSAD), Gleason score, T stage, alkaline phosphatase (ALP) and lactate dehydrogenase (LDH) were correlated with CRPC (P<0.05).Multivariate analysis showed that initial PSA, Gleason score, T stage, ALP and LDH were independent risk factors of CRPC (P<0.05).Based on the above five risk factors, a nomogram prediction model was constructed.The C-index was 0.801, the area under ROC curve (AUC) of 1-year progression-free survival (PFS) was 0.701 (0.608-0.794), and the AUC of 2-year PFS was 0.857 (0.767-0.947).The calibration chart showed that the prediction probability of the model was in good agreement with the actual probability. 【Conclusion】 Initial PSA, Gleason score, T stage, ALP and LDH are independent risk factors of CRPC.The predictive model may be an effective tool for the initial diagnosis of high tumor load bone metastatic prostate cancer, but more data are needed for internal and external validation.
RESUMEN
The safety and survival benefits of abiraterone acetate and docetaxel in the treatment of patients with metastatic hormone-sensitive prostate cancer have been confirmed by randomized controlled trials and clinical studies abroad. However, real-world studies remain lacking. In this article, we review the progress of real-world studies of abiraterone acetate and docetaxel in the treatment of patients with metastatic hormone-sensitive prostate cancer and the problems faced in clinical practice against the background of differentiated real-world studies. Further research is needed to address clinically important issues, such as individualized dosing, combination dosing, and monitoring of adverse effects.
RESUMEN
BACKGROUND:Hair folicle stem cels have been confirmed to have stronger proliferative ability than interfolicular epidermal stem cels, which have been an issue of concern in seed cel research. OBJECTIVE:To compare the biological characteristics of rat hair folicle stem cels cultured by tissue explant method and enzymatic digestion method. METHODS: Under stereomicroscope, hair folicles were isolated from the rat whiskers, and then tissue explant method and two-step enzymatic digestion method were employed to culture hair folicle stem cels. Cels were purified using repeated differential adhesion method, and cel growth and morphology were observed periodicaly. Flow cytometry was used to detect the expression of CD34 and β1 integrin in passage 3 hair folicle stem cels. RESULTS AND CONCLUSION:Cels cultured by two-step enzymatic digestion method grew faster with more amount than those cultured by tissue explants method. Flow cytometry showed that the expressions of PE-CD34 and FITC-β1 were (39.52±19.57)% and (93.46±4.73)% for the two-step enzymatic digestion group, and (19.20±11.53)% and (363.57±14.42)% for the tissue explant method, respectively. There was a significant difference between the two methods. In conclusion, these two methods are able to culture high-activity hair folicle stem cels, which can be chosen according to different experimental requirements.