Steinar J. Karlsen

Efficacy and safety of short-term genistein intervention in patients with localized prostate cancer prior to radical prostatectomy: a randomized, placebo-controlled, double-blind Phase 2 clinical trial.

We conducted a placebo-controlled, block-randomized double-blind Phase 2 study to examine the effect of 30 mg synthetic genistein daily on serum and tissue biomarkers in patients with localized prostate cancer (CaP). Fifty-four study subjects were recruited and randomized to treatment with genistein (n = 23) or placebo (n = 24) for 3 to 6 wk prior to prostatectomy. Seven study subjects were noncompliant to the study protocol. Adverse events were few and mild. Serum prostate specific antigen (PSA) decreased by 7.8% in the genistein arm and increased by 4.4% in the placebo arm (P = 0.051). The PSA level was reduced in tumor tissue compared to normal tissue in the placebo arm. In the genistein arm, the PSA level in tumor and normal tissue was comparable. Total cholesterol was significantly lower in the genistein arm (P = 0.013). There were no significant effects on thyroid or sex hormones. Plasma concentrations of total genistein were on average 100-fold higher in the genistein arm after treatment (P < 0.001). Genistein at a dose that can be easily obtained from a diet rich in soy reduced the level of serum PSA in patients with localized CaP, without any effects on hormones. It was well tolerated and had a beneficial effect on blood cholesterol.

Acute physiological changes in canine kidneys following exposure to extracorporeal shock waves.

Nine anesthetized dogs were studied for four to five hours after administration of extracorporeal shock waves to one kidney, the contralateral organ serving as control. Urinary excretion of electrolytes, N-acetyl-beta-glucosaminidase (NAG) and kallikrein, clearances of creatinine, inulin and para-amino-hippuric acid (PAH), serum aldosterone level and plasma renin activity (PRA) were determined. On the exposed side there was a significant increase in urinary flow and urinary NAG excretion, and a significant fall in urinary osmolality. Effective renal plasma flow (ERPF) was reduced and glomerular filtration rate (GFR) unchanged, thus filtration fraction (FF) was increased. Extraction of PAH was significantly reduced compared with the control kidney. On the control side there was a significant increase in urinary flow and excretion of electrolytes, and a significant fall in urinary osmolality. GFR was increased and ERPF unchanged. FF therefore increased also on this side. The mean rise of PRA in the exposed kidney was higher than in the control kidney, the difference being not significant (p = 0.09). Our results may indicate a triggering of the renin-angiotensin system, and an effect on proximal tubular function following exposure of extracorporeal shock waves.

A prospective study of salvage high-intensity focused ultrasound for locally radiorecurrent prostate cancer: Early results

Abstract Objective. After radical external beam radiation therapy (EBRT), local recurrence may benefit from definitive local therapy. The objective of this study was to evaluate the safety and short-term biochemical results and morbidity after salvage high-intensity focused ultrasound (HIFU) treatment in patients with biopsy-proven local prostate cancer recurrence after EBRT. Material and methods. From October 2006 46 patients were treated with HIFU. Bone scan and abdominal CT/MRI scan were negative. Median follow-up was 9 months (range 3–24 months). Results. The median prostate-specific antigen (PSA) nadir was 0.3 ng/ml (range 0–24 ng/ml). Eighteen patients (39.1%) were classified as failures. In addition, there were four patients (8.7%) with post-HIFU PSA nadir > 0.5 ng/ml. No patients died during follow-up. One patient developed urethrorectal fistulae and was successfully treated conservatively. Two patients developed urethrocutaneous fistulae. Seven patients (15.2%) and one patient (2.1%) developed grade 2 and grade 3 incontinence, respectively. Seven men (15.2%) had erectile function sufficient for intercourse pre-HIFU and only two men (4.3%) post-HIFU. Conclusions. Early results of salvage HIFU in patients with local recurrence of prostate cancer after radical EBRT indicate the procedure to be a reasonable treatment option, but better patient selection criteria are needed. The side-effects are not negligible.

Acute changes in renal function following extracorporeal shock wave lithotripsy in patients with a solitary functioning kidney

Twelve consecutive patients with a solitary functioning kidney were treated for renal stone by extracorporeal shock wave lithotripsy (ESWL*) with the modified Dornier HM3 lithotriptor and studied for 3 days after treatment. Urinary excretion of electrolytes, N-acetyl-beta-glucosaminidase (NAG), alkaline phosphatase, kallikrein, glycosaminoglycans, albumin and beta 2-microglobulin, and clearances of creatinine, inulin and para-aminohippuric acid were determined, as were serum levels of creatinine, urea, beta 2-microglobulin and aldosterone, and plasma renin activity. Urinary flow rate, free water clearance, and urinary excretion of NAG, kallikrein and beta 2-microglobulin were significantly increased 0 to 24 hours after ESWL. The urinary excretions of alkaline phosphatase, albumin and glycosaminoglycans were unchanged. Glomerular filtration rate was significantly decreased and effective renal plasma flow was unchanged. Filtration fraction was stable. Serum lactic dehydrogenase increased significantly after ESWL and remained high through the period of observation. Serum levels of creatinine, beta 2-microglobulin and aldosterone were unaltered. A decrease in plasma renin activity immediately after treatment is explained by the water immersion and the extracellular volume expansion during treatment.

A prospective study of transition from laparoscopic to robot-assisted radical prostatectomy: Quality of life outcomes after 36-month follow-up

OBJECTIVE To compare quality of life (QOL) outcomes after conversion from laparoscopic radical prostatectomy (LRP) to robot-assisted radical prostatectomy (RALP) as the routine procedure for surgical treatment of localized cancer of the prostate (CaP). METHODS In November 2007, we changed the routine operative technique for localized CaP from LRP to RALP. The last 210 consecutive patients operated with LRP were compared with the first 210 consecutive patients operated with RALP. The patients were mailed University of California Los Angeles-Prostate Cancer Index (UCLA-PCI) and Short Form Health Survey (SF)-12 questionnaires at baseline and at 3, 12, and 36-month follow-up. RESULTS In the LRP group, 89.0%, 93.8%, 93.8%, and 88.1% of patients answered questionnaires at baseline and at 3, 12, and 36-month follow-up. The corresponding numbers in the RALP group were 92.4%, 94.3%, 85.7%, and 76.4%. At 36-month follow-up, 87.9% and 82.6% of LRP and RALP patients, respectively, had regained baseline urinary function score (ns). At 36-month follow-up, 57.3% and 61.3% of LRP and RALP patients, respectively, had regained baseline sexual function score (ns). Nerve-sparing surgical procedures mitigated the adverse effects on sexual function in both groups. Surgical method was not associated with urinary function and sexual function at 36 months. Better urinary function was associated with better general mental health. CONCLUSION Introduction of RALP did not result in improvement of functional outcome. There was no difference regarding urologic function/bother score or sexual function/bother score at 36-month follow-up in patients treated with LRP or RALP.

Health-related quality of life after salvage high-intensity focused ultrasound (HIFU) treatment for locally radiorecurrent prostate cancer

Objective:  To evaluate health‐related quality of life (HRQOL) after salvage high‐intensity focused ultrasound (HIFU) for locally radiorecurrent prostate cancer (PCa).

Gas-containing renal stones treated with percutaneous nephrolithotomy: Case report

We present a rare case of E. coli emphysematous pyelonephritis with sepsis. The radiologic presentation consisted of multiple radiolucent gas-filled, free-floating uric acid calculi in a hydronephrotic renal pelvis. The infection was treated by intravenous fluids and antibiotics and percutaneous nephrostomy drainage. The patient was rendered stone free by percutaneous nephrolithotomy and ultrasound lithotripsy.

Branched Renal Calculi Treated by Percutaneous Nephrolithotomy and Extracorporeal Shock Waves

Fifty-four renal staghorn calculi, 26 complete and 28 partial, were treated in 51 patients by percutaneous nephrolithotomy (PCN) in combination with extracorporeal shock wave lithotripsy (ESWL) when necessary. At an average time of observation of 11.1 months, 56% of the renal units were stone free. Twenty-two per cent had residual gravel of less than 2 mm in diameter and 15% contained residuals between 2 and 5 mm in diameter. Seven per cent of the kidneys had significant residual calculi. Additional endourological procedures were required in 13 cases. Complications were minimal and were all conservatively treated. PCN in combination with ESWL is an effective treatment of most branched renal calculi. The methods may be used repeatedly without increasing technical difficulty. The results compare well with open surgery.

Five-year progression-free survival in 577 patients operated on with laparoscopic radical prostatectomy for localized prostate cancer

Abstract Objective. Laparoscopic radical prostatectomy (LRP) was introduced in the Department of Urology, Oslo University Hospital, in 2002. The aim of this study was to report mid-term oncology results and survival data. Material and methods. From February 2002 to November 2007, 582 consecutive patients with localized prostate cancer underwent LRP. Data were collected prospectively into a database. Results. Mean and median follow-up after LRP was 30.3 months (± 15.5) and 36.0 months (range 3–72). Five patients (1%) were lost during follow-up. Two patients died of prostate cancer during the study period and 10 patients died of other causes. The overall positive surgical margin (PSM) rate was 29% and decreased to 13% for the last 100 patients. The overall PSA progression-free survival (PFS) was 85% at 3 years and 73% at 5 years. Gleason score in the tumour specimen, pT stage and surgical margins were statistical significant independent predictors of biochemical PFS. Conclusion. These oncology results and 5-year PFS data after LRP are in line with other reports.

A New System for Descriptive Classification of Stones in the Upper Urinary Tract

A descriptive classification is proposed to stratify upper urinary tract stones by their number, size and location. The system considers the minimal but most important factors regarding the choice of surgical treatment and its success. Its principle is adaptable to more complex staging systems already existing. Practical use of the system has shown it to reflect clinical events, and its simplicity offers an opportunity for compliance in routine clinical study. It facilitates easy computerized stratification of stones in the upper urinary tract.