In recent years, circulating tumor cells have become the focus of tumor research. In-depth study of the role of circulating tumor cells in the genesis, development, and evolution of tumors will be of great significance for the early detection, early diagnosis, early treatment, and prognosis of tumors. Prostate cancer is one of the common male malignant tumors, and the role of circulating tumor cells in prostate cancer has been increasing year by year. This article will focus on the progress of circulating tumor cells detection and its application in prostate cancer.
Background: In recent years, the incidence of prostate cancer (PCa) is increasing. Advanced PCa has a poor prognosis and high cost, which seriously affects the quality of life of patients. Therefore, how to improve the diagnosis rate and prognosis of early PCa is the focus of clinical research. This paper aims to investigate the value of P504s, 34βE12, Ki-67 and prostate-specific antigen (PSA) in the diagnosis and prognosis of PCa. Objective: To investigate the expression of P504s, 34βE12, Ki67 and PSA in prostate tissues and their clinical significance. Methods: Twenty four cases in the study group were selected from PCa confirmed by pathology in the urology department of Chengde Affiliated Hospital from October 2018 to August 2020, and 33 cases of Benign Prostate Hyperplasia (BPH) confirmed by pathology in the same period were selected as the control group. The expression of P504s, 34βE12 and Ki-67 in prostate tissues were determined by immunohistochemistry. Results: The positive expression rates of P504s, 34βE12 and TPSA or F/TPSA in PCa patients were 95.8%, 12.5% and 87.5%, respectively. The positive rates in BPH patients were 9.1%, 93.9% and 27.3%. The difference between the two groups was statistically significant (p<0.05). PCa bone or lymph node metastasis was positively correlated with Ki-67 (r=0.423, p<0.05) and Gleason score (r=0.446, p<0.05), indicating a stronger correlation with Gleasonscore. Conclusion: The combined detection of P504s, 34βE12 and PSA is helpful for the diagnosis and differential diagnosis of PCa. High Gleason score and ki-67 expression may indicate high risk of PCa metastasis and poor prognosis.
Prostate cancer is one of the most common male malignant tumors in Western countries. In the United States, there are about 170,000 new cases of prostate cancer in 2019, ranking second only to lung cancer.1, 2 In recent years, the incidence of prostate cancer in China is gradually increasing occupying the third place among male urogenital malignancies. The metastasis of prostate cancer mainly depends on blood vessels and lymphatic vessels, and the late discovery and poor prognosis of patients are the main reasons for the high fatality rate.2 Relevant epidemiological studies on immigration have found that the incidence of PCa in The Asian population in the United States is as high as 77.8 / l0000, which is similar to local residents and significantly higher than that in the native population in Asia. This suggests that, in addition to race and family history, different diet and lifestyle in China and the West may play an important role in the development and progression of PCa.3 Epidemiological studies have shown an association between geographic location and prostate cancer risk. In fact, the incidence of prostate cancer in Western men is 15 times higher than in Asian men. This suggests that environmental factors or lifestyle, especially diet and nutrition, may play a key role in the occurrence and development of prostate cancer.4 To some extent, metabolic syndrome reflects the diet and lifestyle of patients and is closely related to the occurrence and development of prostate cancer. In addition, Vascular endothelial growth factor (VEGF) as a kind of multi functional cytokine works through specific role in endothelial cells.It can promote endothelial cell proliferation, migration, and increase Vascular permeability. And VEGF can be induced in the body for blood vessel growth, angiogenesis, is closely related to tumorigenesis and metastasis. Numerous recent studies have shown that VEGF is closely related to the occurrence and development of prostate cancer and metabolic syndrome.5 In this paper, multiple physiological and pathological mechanisms of VEGF and metabolic syndrome associated with prostate cancer are reviewed.
Objective: To investigate the relationship between vascular endothelial growth factor (VEGF), metabolic syndrome and its components and degree of differentiation of prostate cancer. Methods: The clinical data of 49 PCa cases treated during October, 2018 to February, 2021 were retrospectively analyzed, including patients’ height, weight, body mass index (BMI), age, blood pressure (BP), triglyceride (TG), high density lipoprotein cholesterol (HDL-C), fasting blood glucose (FBG), vascular endothelial growth factor (VEGF) and Gleason score. Results: Compared with simple PCa group, BMI, the MS group had higher BMI, diastolic blood pressure (DBP, FGB, TG) and VEGF (P<0.05), and higher Gleason score (P<0.05). MS group had a higher degree of malignancy (Gleason≥8). Conclusion: This suggests that MS may promote the progression of PCa, and the increase of VEGF level can indicate the presence of MS in PCa patients, reflecting the progression of PCa to a certain extent.
Background: Prostate specific antigen (PSA) is the most commonly used indicator for screening of prostate cancer(PCa), and the studies on PSA in PCa are very extensive at present. How to effectively use this indicator is worth for further study which this article wish to address. Objective: The aim of this study is to explore how PSA in different ranges can better guide the individualized prostate biopsy. Methods: A total of 117 patients with suspected PCa admitted to the Affiliated Hospital of Chengde Medical College from October 2018 to July 2020 were selected as the research subjects. PSA level and ratio of free and total PSA (F/TPSA) value of each patient were measured, and ultrasound-guided transrectal prostate biopsy was conducted for each patient, and then the PSA measurement results were compared with the prostate biopsy results. Results: The result of biopsy was PCa in 40 cases, BPH in 77 cases. The positive expression rates of Group I in BPH and PCa patients were 25.97% and 87.50%, respectively, and the difference was statistically significant (P < 0.05).The positive expression rates of Group II in BPH and PCa patients were 10.39% and 75.00%, respectively, and the difference was statistically significant (P < 0.05). The sensitivity, specificity, positive predictive value and diagnostic coincidence rates of Group I and Group II were 87.50%, 74.03%, 63.63%, 78.63% and 75.00%, 89.61%, 78.94% and 84.62%, respectively. Conclusion: Under different TPSA intervals, F/T < 0.16 has different diagnostic efficacy for PCa. Group I is more sensitive and suitable for early screening. Group II has stronger specificity in the diagnosis of PCa, Higher diagnostic coincidence rate, and has more diagnostic advantages before biopsy. Selecting Group II can help clinicians make more patient-friendly decisions and reduce the incidence of complications related to biopsy. According to patients’ aspiration for biopsy, auxiliary examinations such as magnetic resonance scan of prostate and bone scan should be performed actively for patients who meet the criteria I if they refuse to undergo biopsy. On the premise of not affecting PCa secondary prevention as much as possible, a more individualized biopsy plan was developed for patients.
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