Efficacy of Bicalutamide Monotherapy in Locally Advanced Prostate Cancer / 대한비뇨기과학회지

PURPOSE: Nonsteroidal antiandrogen monotherapy may be a treatment option for some patients with locally advanced prostate cancer. We report the efficacy, advantage, and adverse events of bicalutamide monotherapy in patients with locally advanced prostate cancer. MATERIALS AND METHODS: We retrospectively reviewed 13 patients with locally advanced prostate cancer who were treated with bicalutamide 150mg monotherapy. Serum PSA reduction was evaluated with periodic PSA follow-ups. If clinical progression was suspected, pelvic CT or bone scan was performed for the evaluation of disease progression. The changes of sexual function were assessed with the IIEF questionnaires prior to treatment and after 6 months of medication. RESULTS: Serum PSA declined to less than 2ng/ml within 3 months after treatment in most patients. A high serum PSA level was maintained in only 1 patient, and this patient showed disease progression. There were no significant differences between the mean scores of the pretreatment and post-treatment erectile function, orgasmic function, sexual desire, intercourse satisfaction, and overall satisfaction (p>0.05). Of the 13 patients, 2 patients (15.5%) showed adverse events, such as breast pain and gynecomastia. However, the symptoms were mild to moderate. There was no withdrawal to medication due to drug-related adverse events. CONCLUSIONS: From the viewpoint of the fall in serum PSA levels after 3 months, bicalutamide monotherapy was effective in the treatment of locally advanced prostate cancer. There were benefits to the patients in terms of the quality of life parameters, sexual function, and tolerability, which make bicalutamide monotherapy an attractive treatment option for patients with locally advanced prostate cancer. (Korean J Urol 2004;45: 108-113)

Effects of Intravesical Instillation of Cyclooxygenase-2 Inhibitor on Cyclophosphamide-induced Overactive Bladder / 대한비뇨기과학회지

PURPOSE: This study was performed to investigate the effects of intravesical instillation of cyclooxygenase-2 (COX-2) inhibitors on the cyclophosphamide-induced overactive bladder. MATERIALS AND METHODS: The 40 Sprague-Dawley rats were divided into 3 groups; the control group, the overactive group, and the COX-2 inhibitor treated group. Cystometrograms (CMG) were performed and the contraction interval, inter-contraction interval, contraction time and contraction pressure were measured. After CMG, the bladders of each group were dissected out, and weighed. RESULTS: On CMG, the contraction interval and inter-contraction interval for the overactive group were significantly decreased compared with the control group. After treatment with COX-2 inhibitor, the contraction interval and inter-contraction interval were significantly increased compared with the overactive group (p<0.05). The contraction time in the overactive group was significantly increased compared with the control group, and it was also decreased in the COX-2 inhibitor treated group compared with the overactive group (p<0.05). The contraction pressure in the overactive group and the COX-2 inhibitor treated group were significantly increased compared with the control group. There were no significant differences between the overactive and COX-2 inhibitor treated groups. The bladder weights of the overactive and COX-2 inhibitor treated groups were significantly increased compared with the control group (p<0.05). CONCLUSIONS: Intravesical instillation of COX-2 inhibitor can suppress cyclophosphamide-induced detrusor overactivity. Therefore, intravesical instillation of COX-2 inhibitor may be considered as a possible treatment for the overactive bladder.

Effects of Intravesical Instillation of Cyclooxygenase-2 Inhibitor on Cyclophosphamide-induced Overactive Bladder / 대한비뇨기과학회지

PURPOSE: This study was performed to investigate the effects of intravesical instillation of cyclooxygenase-2 (COX-2) inhibitors on the cyclophosphamide-induced overactive bladder. MATERIALS AND METHODS: The 40 Sprague-Dawley rats were divided into 3 groups; the control group, the overactive group, and the COX-2 inhibitor treated group. Cystometrograms (CMG) were performed and the contraction interval, inter-contraction interval, contraction time and contraction pressure were measured. After CMG, the bladders of each group were dissected out, and weighed. RESULTS: On CMG, the contraction interval and inter-contraction interval for the overactive group were significantly decreased compared with the control group. After treatment with COX-2 inhibitor, the contraction interval and inter-contraction interval were significantly increased compared with the overactive group (p<0.05). The contraction time in the overactive group was significantly increased compared with the control group, and it was also decreased in the COX-2 inhibitor treated group compared with the overactive group (p<0.05). The contraction pressure in the overactive group and the COX-2 inhibitor treated group were significantly increased compared with the control group. There were no significant differences between the overactive and COX-2 inhibitor treated groups. The bladder weights of the overactive and COX-2 inhibitor treated groups were significantly increased compared with the control group (p<0.05). CONCLUSIONS: Intravesical instillation of COX-2 inhibitor can suppress cyclophosphamide-induced detrusor overactivity. Therefore, intravesical instillation of COX-2 inhibitor may be considered as a possible treatment for the overactive bladder.

Crossed Renal Ectopia Accompanied with VUR without Fusion / 대한비뇨기과학회지

Crossed renal ectopia, without fusion, is a very rare congenital anomaly of the urinary tract, and can be frequently accompanied with hydronephrosis due to vesico-ureteral reflux (VUR) or ureteropelvic junction stenosis, renal atrophy, or ectopic ureterocele. We report a case of vesicoureteral reflux is reported in an infant with crossed renal ectopia without fusion.

Antibacterial Effect of an Intraprostatic Zinc Injection in a Rat Model of Chronic Bacterial Prostatitis / 대한비뇨기과학회지

PURPOSE: High levels of prostatic zinc are associated with prostatic antimicrobial activity and are depressed in patients with chronic prostatitis. We investigated the inhibition of bacterial growth in the rat prostate with chronic prostatitis after an intraprostatic injection of zinc and compared the two different types of zinc delivery. MATERIALS AND MTHODS: Ninety male Wistar rats were used in the study. Experimental chronic bacterial prostatitis was induced by the instillation of a bacterial suspension (Escherichia coli 108/ml) into the prostatic urethra. The animals were followed-up for 4 weeks and then injected intraprostatically with either 0.2ml of a zinc liposome or a zinc solution (0.04M zinc sulfate). Animals were sacrificed 4, 6, and 8 weeks after the injection. The inhibition of inflammation and its consequences were analyzed both microbiologically and histologically. The prostatic zinc concentrations were measured by inductively coupled plasma atomic emission spectrometry. RESULTS: The average infection rates and mean Log10cfu/g of the zinc-treated groups were significantly lower than the controls. The histopathology showed resolving prostatitis in the zinc-treated groups compared with the controls. The prostatic zinc levels were higher in the zinc-treated groups than in the controls 4 and 6 weeks after the zinc injection (p<0.05). However, the zinc liposome and zinc solution groups were found to be effectively identical. CONCLUSIONS: An intraprostatic injection of zinc inhibited bacterial growth by increasing the zinc levels in the rat prostatitis model. These results suggest that a local application of zinc to the prostate presents a new treatment modality for chronic bacterial prostatitis at the point of its pathogenesis.

Antibacterial Effect of an Intraprostatic Zinc Injection in a Rat Model of Chronic Bacterial Prostatitis / 대한비뇨기과학회지

PURPOSE: High levels of prostatic zinc are associated with prostatic antimicrobial activity and are depressed in patients with chronic prostatitis. We investigated the inhibition of bacterial growth in the rat prostate with chronic prostatitis after an intraprostatic injection of zinc and compared the two different types of zinc delivery. MATERIALS AND MTHODS: Ninety male Wistar rats were used in the study. Experimental chronic bacterial prostatitis was induced by the instillation of a bacterial suspension (Escherichia coli 108/ml) into the prostatic urethra. The animals were followed-up for 4 weeks and then injected intraprostatically with either 0.2ml of a zinc liposome or a zinc solution (0.04M zinc sulfate). Animals were sacrificed 4, 6, and 8 weeks after the injection. The inhibition of inflammation and its consequences were analyzed both microbiologically and histologically. The prostatic zinc concentrations were measured by inductively coupled plasma atomic emission spectrometry. RESULTS: The average infection rates and mean Log10cfu/g of the zinc-treated groups were significantly lower than the controls. The histopathology showed resolving prostatitis in the zinc-treated groups compared with the controls. The prostatic zinc levels were higher in the zinc-treated groups than in the controls 4 and 6 weeks after the zinc injection (p<0.05). However, the zinc liposome and zinc solution groups were found to be effectively identical. CONCLUSIONS: An intraprostatic injection of zinc inhibited bacterial growth by increasing the zinc levels in the rat prostatitis model. These results suggest that a local application of zinc to the prostate presents a new treatment modality for chronic bacterial prostatitis at the point of its pathogenesis.

A Case of Idiopathic Calcinosis of the Scrotum / 대한비뇨기과학회지

The idiopathic calcinosis of the scrotum is multiple and asymptomatic nodules of scrotal skin which can onset either in childhood or early adulthood. It increases in size and number, while breakingdown to discharge chalky contents on occasions. We report a case of a 68-year-old-man who was effectively treated with a simple excision of the affected skin with an idiopathic scrotal calcinosis. There is no family history of scrotal calcification. Histopathologically, multiple nodules showed the epidermal cyst with partially degenerated wall and calcium deposits with a foreign body reaction in the dermis in this case. In most reported cases, some intact epidermal cysts are also present, and dystrophic calcification, and possible inflammation and rupture of epidermal cysts regarded as be the main pathogenetic mechanism of the disease.

The Factors Influencing on Insertion of Double-J Catheter in Ureteral Obstruction due to Malignancy / 대한비뇨기과학회지

PURPOSE: The aim of this presentation is to analyze the factors influencing on retrograde insertion of double-J catheter in urethral obstruction due to malignancy and to predict the possibility of stunting with double-J catheter. MATERIALS AND METHODS: A retrospective analysis of 43 patients who had underwent retrograde double-J catheter insertion for urethral obstruction secondary to pelvic malignancy, from January 1993 to April 1997, was performed to evaluate the success rates of double-J ureteral stenting according to the factors such as age, sex, presence or absence of flank pain, degree of hydronephrosis, renal function, stage of tumor, laterality of ureter, past history of radiotherapy, operation and chemotherapy. RESULTS: According to the degree of hydronephrosis, the success rate was 100, 73.7 and 50% in grade I II and III, respectively(p<0.05). According to the renal function, the success rate was 81.3% in the group with normal renal function and 45.5% in the group with abnormal venal function(p<0.05) According to the stage of disease, the success rate was 100, 70.7 and 58.3% in stage I, II and III, respectively. According to the absence or presence of flank pain, the success rate was 56.3% in the group with flank pain and 81.5% in the group without flank pain. According to the past history of radiotherapy, the success rate was 65.6% in the group treated with radiotherapy and 90.9% in the group not treated with radiotherapy. The age, sex, laterality of ureter, past history of operation and chemotherapy were not significantly correlated to the success rates. CONCLUSIONS: The factors influencing on double-J ureteral slanting were the degree of hydronephrosis, renal function, absence or presence of flank pain, stage of disease and past history of radiotherapy Further study will be needed to demonstrate the accurate timing of urethral stenting with doublets ureteral catheter.

The Effects of Insulin Treatment on the Contractile Responses of the Seminal Vesicle in Streptozotocin-induced Diabetic Rats / 대한비뇨기과학회지

PURPOSE: Diabetes mellitus produces disturbances in reproductive function including decreased serum testosterone levels, however, the effects of diabetes on the contractile function of testosterone-dependent urogenital smooth muscles have not been conclusively established. In this study, the effects of streptozotocin-induced diabetes on the contractile responses of rat seminal vesicle were compared with those of insulin-treated diabetic and control groups. MATERIALS AND METHODS: Diabetes was induced by intraperitoneal injection of streptozotocin(65mg/kg) and in insulin-treated diabetic group, NPH was daily injected by subcutaneous route. All the rats were sacrificed by cervical dislocation after 6 weeks and the seminal vesicles were immediately removed. The changes of contractile response to electrical field stimulation, phenylephrine and KCI administration were measures by polygraph RESULTS: 1. The weights of seminal vesicle in streptozotocin-induced diabetes were significantly decreased than those of insulin-treated diabetic and control groups(p<0.05). 2. Contractile responses of seminal vesicle to electrical field stimulation were significantly decreased in streptozotocin-induced diabetic compared to insulin-treated diabetic and control groups(p<0.05). 3. Streptozotocin-induced diabetes produced significant increase in contractile responses of seminal vesicle to phenylephrine and KCI than insulin-treated diabetic and control groups(p<0.05). CONCLUSIONS: This study demonstrates that diabetes produce a denervation-like supersensitivity which is specific for receptor-mediated processes and that insulin treatment in diabetic mellitus is able to recover the contractile responses of seminal vesicle.

A Case or Ectopic Paragonimus Westermani in the Adrenal Gland / 대한비뇨기과학회지

Paragonimiasis is a chronic inflammatory process which frequently involve to the lung. The lung is the main site of infection with Paragonimus westermani, but any place of the body including brain, orbit, liver, intestinal wall, diaphragm, subcutaneous tissue, and etc. may be infected with the larva We report a case of ectopic Paragonimus westermani arising from the adrenal gland, in 70-year-old male.

Removal of Renal Cell Carcinoma Extending Into the Inferior Vena Cava and Right Atrium using Hypothermia and Circulatory Arrest / 대한비뇨기과학회지

Intracaval neoplastic extension of renal cell carcinoma to the right atrium has been reported in 14-39% of the patients with carcinoma involving the vena cava. We report a case of 44-year-old woman hospitalized with intermittent vomiting and presented with evidence of renal cell carcinoma extending into the inferior vena cava and right atrium on CF and MRI. We successfully managed renal cell carcinoma surgically extending into the right atrium using hypothermia and circulatory arrest.