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Background Large tumor suppressor 2 (LATS2) is an important regulator of the Hippo pathway and it plays crucial roles in cell survival and behaviors. Herein, we evaluated the pathological roles of LATS2 in prostate cancer (PC), for which very little information is available. Methods Cell proliferation, migration, and invasion in response to the siRNA‐mediated knockdown (KD) LATS2 expression were evaluated in two PC cell lines (LNCaP and PC3). The expression of LATS2 in specimens from 204 PC patients was investigated immunohistochemically, and the relationships between its expression and clinicopathological features, proliferation index (PI; measured using an anti‐KI‐67 antibody), and biochemical recurrence (BCR) were investigated. Results KD of LATS2 increased the growth, migration, and invasion in LNCaP cells and only increased migration in PC3 cells. The expression of LATS2 was negatively associated with the grade group, T, N, M stage, and PI. In addition, the expression of LATS2 was a useful predictor of the histological effects of neoadjuvant hormonal therapy and BCR‐free survival periods. A multivariate analysis model including clinicopathological features showed that negative expression of LATS2 had a significantly higher risk of BCR (odds ratio = 2.95, P < 0.001). Conclusions LATS2 acts as a tumor suppressor in PC. LATS2 expression is a useful predictor for BCR. LATS2‐related activities are possibly dependent on the androgen‐dependency of PC cells. Therefore, we suggest that LATS2 could be a potential therapeutic target and a useful predictor for outcome in patients with PC.
Background Large tumor suppressor 2 (LATS2) is an important regulator of the Hippo pathway and it plays crucial roles in cell survival and behaviors. Herein, we evaluated the pathological roles of LATS2 in prostate cancer (PC), for which very little information is available. Methods Cell proliferation, migration, and invasion in response to the siRNA‐mediated knockdown (KD) LATS2 expression were evaluated in two PC cell lines (LNCaP and PC3). The expression of LATS2 in specimens from 204 PC patients was investigated immunohistochemically, and the relationships between its expression and clinicopathological features, proliferation index (PI; measured using an anti‐KI‐67 antibody), and biochemical recurrence (BCR) were investigated. Results KD of LATS2 increased the growth, migration, and invasion in LNCaP cells and only increased migration in PC3 cells. The expression of LATS2 was negatively associated with the grade group, T, N, M stage, and PI. In addition, the expression of LATS2 was a useful predictor of the histological effects of neoadjuvant hormonal therapy and BCR‐free survival periods. A multivariate analysis model including clinicopathological features showed that negative expression of LATS2 had a significantly higher risk of BCR (odds ratio = 2.95, P < 0.001). Conclusions LATS2 acts as a tumor suppressor in PC. LATS2 expression is a useful predictor for BCR. LATS2‐related activities are possibly dependent on the androgen‐dependency of PC cells. Therefore, we suggest that LATS2 could be a potential therapeutic target and a useful predictor for outcome in patients with PC.
Objectives: To evaluate the clinical efficacy of neoadjuvant chemohormonal therapy (NCHT) combined with laparoscopic radical prostatectomy in high-risk prostate cancer (PCa). Methods: A randomized controlled trial was used in this study. Eighty patients with high-risk PCa treated in Tangshan Gongren Hospital from January 2017 to January 2019 were selected and randomly divided into two groups. The control group was given neoadjuvant endocrine therapy, while the research group was added NCHT to the control group. Three months later, the patients of two groups underwent laparoscopic radical prostatectomy. The changes of surgical indicators, adverse drug reactions, incidence of lower urinary tract symptoms, biochemical recurrence rate after follow-up, PSA progression-free survival and incidence of surgical complications were compared between the two groups. Results: After NCHT, the PSA level and prostate volume in the research group decreased significantly than those in the control group (P = 0.00). Surgical duration, postoperative hospital stay and retention time of drainage tube were significantly shorter and intraoperative blood loss was significantly less in the research group than those in the control group (P = 0.00). The incidence of lower urinary tract symptoms, biochemical recurrence and surgical complications in the research group were significantly lower than those in the control group, and the early recovery rate of urinary control and progression-free survival were significantly better than those in the control group (P < 0.05). Conclusion: NCHT combined with laparoscopic radical prostatectomy is a safe and effective treatment for high-risk PCa, which is worthy of promotion in clinical practice. doi: https://doi.org/10.12669/pjms.38.8.5469 How to cite this:Zhang P, Cai S, Yan C, Li L. Clinical efficacy of neoadjuvant chemohormonal therapy combined with laparoscopic radical prostatectomy in high-risk Prostate Cancer. Pak J Med Sci. 2022;38(8):---------. doi: https://doi.org/10.12669/pjms.38.8.5469 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
ObjectiveThis systematic study aimed to assess and compare the comprehensive evidence regarding the impact of neoadjuvant hormone therapy (NHT) on surgical and oncological outcomes of patients with prostate cancer (PCa) before radical prostatectomy (RP).MethodsLiterature searches were performed according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. Using PubMed, Web of Science, Chinese National Knowledge Infrastructure, and Wanfang databases, we identified relevant studies published before July 2020. The pooled effect sizes were calculated in terms of the odds ratios (ORs)/standard mean differences (SMDs) with 95% confidence intervals (CIs) using the fixed or random-effects model.ResultsWe identified 22 clinical trials (6 randomized and 16 cohort) including 20,199 patients with PCa. Our meta-analysis showed no significant differences in body mass index (SMD = 0.10, 95% CI: −0.08–0.29, p = 0.274) and biopsy Gleason score (GS) (OR = 1.33, 95% CI: 0.76–2.35 p = 0.321) between the two groups. However, the NHT group had a higher mean age (SMD = 0.19, 95% CI: 0.07–0.31, p = 0.001), preoperative prostate-specific antigen (OR = 0.47, 95% CI: 0.19–0.75, p = 0.001), and clinic tumor stage (OR = 2.24, 95% CI: 1.53–3.29, p < 0.001). Compared to the RP group, the NHT group had lower positive surgical margins (PSMs) rate (OR = 0.44, 95% CI: 0.29–0.67, p < 0.001) and biochemical recurrence (BCR) rate (OR = 0.47, 95% CI: 0.26–0.83, p = 0.009). Between both groups, there were no significant differences in estimated blood loss (SMD = −0.06, 95% CI: −0.24–0.13, p = 0.556), operation time (SMD = 0.20, 95% CI: −0.12–0.51, p = 0.219), pathological tumor stage (OR = 0.76, 95% CI: 0.54–1.06, p = 0.104), specimen GS (OR = 0.91, 95% CI: 0.49–1.68, p = 0.756), and lymph node involvement (OR = 0.76, 95% CI: 0.40–1.45, p = 0.404).ConclusionsNHT prior to RP appeared to reduce the tumor stage, PSMs rate, and risk of BCR in patients with PCa. According to our data, NHT may be more suitable for older patients with higher tumor stage. Besides, NHT may not increase the surgical difficulty of RP.
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