Objective To evaluate t le effects of various mutants of PAK6 kinase on the proliferation of prostate cancer cells and their roles in the pathology of prostate cancer. Methods Variant mutants of PAK6 kinase, including wild type ( WT),kinase activated type (SN) and kinase inactivated type (KM) , were in vitro constructed according to the PAK6 sequence,and were transfected into the LNCaP cells by Lipo-fectamine. G418 was used to select the stable cell line. Phosphorylated PAK6 antibody was used in Western blot to detect the kinase expression in the eel.s. The proliferation rate was measured by MTT assay;the growth effects of the cells stimulated by androgen were also recorded and compared. Results Different LNCaP cell lines expressing wild type, kinase activated and kinase inactivated PAK6 were prepared successfully. Wild type (WT) PAK6 and the kinase activated PAK6-SN significantly inhibited the growth of LNCaP cells by 32. 1% and 39. 3%,respectively (P

Objective To evaluate the minimally invasive technique of laparoscopy by retroperitoneal access for the treatment of parapelvic cyst. Methods Twelve patients(7 men and 5 women;mean age,52 years;age range,34-75 years) with parapelvic cysts were included.The cyst size ranged from 2.8 cm?3.0 cm to 2.5 cm?11.5 cm.The cysts were on the left side in 6 cases and on the right in another 6 cases.Laparoscopic resection or de-roofing of the parapelvic cysts by retroperitoneal access was performed in them.The relevant parameters of the procedures were summarized.Results The success rate of the operation was 100%.The mean operative time of the first 6 patients was 190 min,while it was 86 min in the rest 6 patients.The mean intraoperative blood loss was 25 ml.No injury to the kidney pedicle or pelvis occurred.The mean hospital stay was 9 d.In 11 patients,no recurrence of the cyst occurred during a follow-up of 7-31 months.Only 1 patient with concomitant renal cyst had recurrence of the cyst found by B-ultrasound 2 years after operation.Conclusions Therapeutic laparoscopy by retroperitoneal access has advantages of minimal trauma,less blood loss,rapid recovery and better effect,therefore it is the ideal treatment choice for parapelvic cyst.

Objective To summarize the common types and clinical characteristics of ureter disease;which can increase manipulation difficulties and adverse events during rigid ureteroscopic procedures. Methods From Jan 2001 to Dec 2010,our team performed 317 rigid ureteroscopic Drocedures for ureteroscopic examination or treatment;including 60 difficult procedures(34 male and 26 female).The mean age of the patients was 37 years (range,18 to 71).The ureteral diseases were classifted into five types according to the pathological characteristics:Type Ⅰ calculous stenosis,Type Ⅱ neoplastic stenosis;Type Ⅲ non-congenital stenosis,Type Ⅳ congenital stenosis,Type Ⅴ expansion of tortuous ureters.The operative time,complications,and conversion to open surgery were evaluated,and the therapeutic methods were analyzed. Results Of the 60 difficuhly-manipulated procedures,the mean manipulated time was 75 min (range,31 to 200).Intra-operative complications occurred in 9 procedures,including 4 cases of mucosal bleeding,2 cases of submucosaI false passage and 3 cases of ureteral perforation.Eleven procedures were converted to open surgery. In five procedures only a double J tube was inserted for drainage due to the difficulty of entering the ureter.Fiftyfive patients were followed up for 17 months (range,3 to 110);48 patients were cured,5 patients improved and 2 patients were unchanged. Conclusions The five types of ureteral disease can increase operative difficulties and risks of rigid ureteroscopic procedures.We should be cautious during surgery and should stop manipulation or convert to other surgeries if necessary.

AIM: To study the effects of CIK cocultured with DC that pulsed with RCC antigen on renal carcinoma cells.METHODS: DC and CIK cells were generated respectively by cytokines from PBMC of healthy blood donor.Cell surface markers were analyzed by flow cytometry.Then CIK were cocultured with autologous DC that was(or not) pulsed with RCC antigen(786-0 cells).Cytotoxic activity against 786-0 or PC3 cells was measured by MTT assay under three different conditions: CIK cocultured with DC which was pulsed with 786-0 antigen(group A);CIK cocultured with DC which is not pulsed with 786-0 antigen(group B);CIK without DC(group C).RESULTS: The cytotoxic activity of three groups against 786-0 cells was(70.64?8.26)%,(53.40?7.33)%,(46.64?6.01)%,respectively(E/T=(20∶1)).Significant differences between group A and group B or between group A and group C were observed(P

Objective:To investigate the relationship between the serum alkaline phosphatase (ALP), prostate specific antigen (PSA) and bone metastasis in initially diagnosed prostate cancer (PCa) patients in different ISUP(International Society of Urological Pathology)groups.Methods:The 368 initial diagnosed prostate cancer patients recruited from January 2013 to December 2018 were retrospectively analyzed, including 247 cases in the Third Affiliated Hospital of Sun Yat-sen University, 111 cases in the Yuebei People's Hospital Affiliated to Medical College of Shantou University and 10 cases in Shenzhen Hospital of Southern Medical University. According to whether there was bone metastasis at the initial diagnosis, it was divided into 230 cases in the bone metastasis group and 138 cases in the non bone metastasis group. There was no significant difference between the two groups in age [(71.9±9.4) years and (71.2±8.7) years], body mass index (BMI) [(23.1±3.7) kg/m 2 and (23.7±2.6) kg/m 2]. There were significant differences in PSA [(307.3±847.0) ng/ml and (84.5±257.3) ng/ml] and ALP [(174.5±270.8) U/L and (71.0±23.2) U/L] between the two groups. In different PSA subgroups, there were 45 cases in PSA <10 ng/ml, 35 cases in PSA 10-20 ng/ml and 288 cases in PSA >20 ng/ml. The differences of ALP and PSA between bone metastasis group and non-bone metastasis group based on different ISUP stratification were analyzed, ROC curves were used to predict their risks of bone metastasis. Results:There were 3(1.3%), 22(9.6%), 34(14.8%), 85(37.0%) and 86 (37.4%) prostate cancer patients with bone metastasis from ISUP group 1 to 5, and 14(10.1%), 19(13.8%), 29(21.0%), 32(23.2%) and 44(31.9%) without bone metastasis, respectively. There was significant difference in the serum ALP levels between the bone metastasis group and the boneless metastasis group in the ISUP group 4(157.6±207.7 vs. 66.5±17.0) and 5(189.4±257.5 vs. 69.2±18.4)( P<0.001) and PSA levels had difference in the ISUP group 3(240.3±313.0 vs. 42.4±42.1), 4(152.3±184.5 vs. 44.7±33.3) and 5(435.2±1006.3 vs. 60.8±84.8)( P<0.001). There was statistically significant between the bone metastasis group and the without(336.1±882.2 vs. 139.3±328.1) when PSA>20 ng/ml( P=0.006). ROC curve analysis: the cut-off values of ALP were 115.5, 109.0, 75.5 and 86.0 U/L from ISUP group 2 to 5 respectively, the sensitivity was 23.8%, 56.5%, 66.4% and 50.6% respectively, the specificity was 99.7%, 93.4%, 78.3% and 89.2% respectively, and the accuracy were 59.4%, 73.1%, 69.7% and 63.3%, respectively. The cut-off values of PSA were 39.5, 93.1, 54.2 and 28.9 ng/ml from ISUP group 2 to 5 respectively, the sensitivity was 64.4%, 68.4%, 87.4% and 88.3% respectively, and the specificity was 79.5%, 90.6%, 63.7% and 61.6% respectively, and the accuracy were 71.6%, 78.1%, 80.1% and 79.2%, respectively. Conclusion:ALP increased significantly in ISUP group ≥4 and PSA in ISUP group ≥3, which related to bone metastasis in patients with initial diagnosed prostate cancer.

Objective To retrospectively analyze the different clinical stages of patients with prostate cancer,and to investigate it's correlation with body mass index (BMI).Methods 363 patients with prostate cancer were enrolled from January 2008 to December 2016.There were 141 cases of stage Ⅱ,Ⅲ in 20 cases,202 cases of stage Ⅳ.According to the stratification of BMI (emaciation group,normal group,overweight group,obesity group),clinical data of different groups of prostate cancer patients were compared to analyze there correlation with BMI.Results Patient's age,pre-PSA concentration,Gleason scores and PSA density were significantly correlated with clinical stage (P ＜ 0.05).Prostate volume and weight had no significant correlation with staging.There was a significant correlation between different strata of BMI and clinical stage (P ＜ 0.05).Conclusion The different strata of BMI are closely related to the clinical stage.The higher BMI,the higher risk of the prostate cancer.

Objective To compare the efficacy of extended pelvic lymph node dissection (ePLND)and oncological outcome by fluorescence laparoscopic radical prostatectomy (FLRP) versus high-definition laparoscopic radical prostatectomy (HD-LRP) for men with locally advanced prostate cancer (LAPCa).Methods In a prospective trial,we recruited 51 patients with T3a-bNxM0 prostate cancer from July 2015 to April 2018.Patients were assigned to study group or control group according to random number method,and were underwent either FLRP + ePLND or HD-LRP + ePLND.21 in the study group were injected with 5 mg of indocyanine green (ICG) into the bilateral lobes of the prostate transperineally guiled by transrectal ultrasound 30 min before surgery for lymphography.During the surgical procedure a fluorescence laparoscope,optimized for detection in the near infrared range,was used to visualize the lymph nodes (green fluorescent) in the dissection region in the study group while a common laparoscopy introduced in control one.Lymph nodes were removed in the external iliac vessiles,internal iliac artery,obturator fossa regions,common iliac regions and presacral regions in both groups.Radical prostatectomy was completed in the both groups by similar steps.The operation time,blood loss,number of removed lymph nodes and positive lymph nodes,complication rate,biochemical recurrence (BCR) and metastasis free survival rates in 2 years were recorded and compared in the two groups.Results 51 eligible patients were selected,including 21 in the study group and 30 in the control group.The mean age of biopsy of study group and control one were (66.4 ± 7.7) and (66.8 ± 7.4),the mean age PSA (23.5 ± 16.8) ng/ml and (26.0 ± 20.1) ng/ml,the mean Gleason score of biopsy (8.1 ± 1.0) and (7.9 ± 0.9) respectively,and there was no statistical significant difference between two groups.The mean operation time of study group and control one were (45.9 ± 4.6) min and (56.4 ± 3.2) min,the mean removed lymph nodes were (27.7 ± 5.6) and (22.1 ±5.6) respectively,and there was statistical significant difference between two groups (all P ＜ 0.05).Lymph nodes invasion in pathology were reported in 8 cases(38.1％)in the study groups while 9 (30.0 ％) in the control one;the proportion of positive lymph node (metastasis) were 3.2％ (19/583) and 3.4％ (23/663) in the two groups respectively and no statistically significant difference was noted between the two groups.Lymphorrhagia occurred in 4 cases in the control group,and there was no serious complications in both groups.The median follow-up time was 20 (7-33) month and during this time,BCR observed of 1 (4.7％) in the study group and 8 (26.7％) in the control;meanwhile,the MFSR was recorded of 100.0％ (0)in the study group and 86.7％ (4)in the control one,showing a statistically significant difference between the two groups(P =0.04).Conclusions Comparing with LRP,FLRP achieved better results of LN dissection,which will improve oncological outcomes.

Objective:To explore the efficacy of fluorescent retroperitoneal lymph node dissection in the comprehensive treatment of lymph node recurrence after radical prostatectomy (RP).Methods:From January 2017 to December 2020, 25 patients with lymph node recurrence diagnosed by 68Ga-PSMA PET/CT after RP in our hospital were enrolled in this study. The patients were 67 (59-77) years old. The median PSA was 7.7 (0.5-12.6) ng/ml at lymph node recurrence, and was treated with androgen deprivation therapy (ADT), suggesting hormone-sensitive prostate cancer. Before recurrence, 4 cases were in T 2 stage, 17 cases in T 3, 4 cases in T 4, 10 cases in N 0, and 15 cases in N 1stage, 25 cases in M 0stage. 2 cases diagnosed as ISUP grade group <3, 9 cases in group 4, and 14 cases in group 5. The median time from radical resection to recurrence was 43 (27-56) months. All 25 cases were diagnosed as lymph node recurrence by 68Ga-PSMA PET/CT examination. Fluorescence retroperitoneal lymph node dissection was performed. Pelvic lymph nodes were detected in the dark field under the fluorescence mode, and positive lymph nodes were found. The white light mode was switched, and the lymph nodes were cleaned, and recorded. For metastatic lymph nodes indicated by preoperative PSMA PET/CT, routine dissection was performed regardless of whether the lymph nodes were fluorescently positive or not. The only routine examination was performed if there were no lymph nodes with fluorescently positive staining in other sites. Perioperative data, biochemical recurrence (BCR) rate, radiological recurrence (RAR) rate, and follow-up data were collected and analyzed. Results:25 patients were pathologically diagnosed with lymph node metastasis. The median lymph node dissection time was 21(15-28) min, estimated blood loss was 30(20-50) ml, hospital days was 4(3-5)d without any severe complications (