Publications by authors named "Karl-Heinz Kurth"

Background: Transperineal magnetic resonance imaging-transrectal ultrasound fusion guided biopsy (MFGB) is an increasingly popular technique due to increasing rates of biopsy-related infections. However, its widespread implementation has been hampered by the supposed necessity of epidural or general anesthesia.

Objective: To demonstrate the technique, feasibility, and results of transperineal MFGB under local anesthesia, in an ambulatory setting without the administration of prophylactic antibiotics.

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Article Synopsis
  • - The study examined the long-term effects of testosterone replacement therapy (TRT) on quality of life (QOL) and sexual function in men with low testosterone levels, using data from a multinational registry over 36 months.
  • - Results showed that men receiving TRT experienced significant improvements in QOL and sexual function, reporting fewer symptoms compared to those who did not receive treatment; TRT patients scored better on established assessment scales like the AMS and IIEF.
  • - The findings suggest that TRT can lead to sustained enhancements in the life quality of men with hypogonadism, although some improvement was also noted in untreated patients, emphasizing the effectiveness of TRT over time.
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Background: The timing of endocrine treatment (ET) for prostate cancer (PCa) remains controversial. The issue is addressed in European Organisation for the Research and Treatment of Cancer (EORTC) protocol 30846 for patients with lymph node-positive (pN1-3) cancer without local treatment of the primary tumour.

Objective: To evaluate the effect of early versus delayed treatment in pN1-3 PCa.

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Objective: To examine the contribution of the skeleton and the kidney to the development of humoral hypercalcaemia of malignancy (HHM) in a mouse model of HHM treated with a potent bisphosphonate.

Materials And Methods: Mice bearing the human RCC cell line RC-9 were treated with bisphosphonate (subcutaneous, 0.25 mg/kg body weight olpadronate) or saline solution.

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We sought to review the definition, diagnosis, prognosis, and treatment of high-grade Ta urothelioma carcinoma and carcinomas in situ (CIS) in order to provide evidence-based guidelines for their diagnosis and treatment. The English-language literature on high-grade Ta urothelial carcinoma and CIS was identified and critically reviewed by a panel of 9 international experts. The panel then met at a consensus conference to present their conclusions.

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Purpose: We determined if improved tumor detection using hexaminolevulinate (HAL) fluorescence cystoscopy could lead to improved treatment in patients with bladder cancer.

Materials And Methods: A total of 146 patients with known or suspected bladder cancer were assessed in this open, comparative, within patient, controlled phase III study. Patients received intravesical HAL for 1 hour and were assessed with standard white light cystoscopy and blue light fluorescence cystoscopy.

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Objectives: Based on the requirement of a Th1 immune response for clinical efficacy, and incited by the arbitrary induction scheme, frequent side effects and the empirical approach in improving BCG immunotherapy for superficial bladder cancer, an alternative intravesical BCG treatment schedule for dose reduction was investigated without compromising Th1 cytokine induction in the bladder in a mouse model.

Methods: Mice were submitted to 6 weekly BCG instillations and treatment schedules omitting intermediate instillations during this standard scheme. Th1 (IFN-gamma, IL-2, IL-12p40), and Th2 (IL-10, IL-4) cytokine responses in individual mouse bladders were measured by a semiquantitative RT-PCR based method.

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Conventional diagnosis of prostate cancer does not appear to be sensitive enough to differentiate pre-operatively between organ-confined and extracapsular disease. New technologies, arising from the field of molecular biology, have been introduced to improve diagnosis and their implementation into the clinical practice is nowadays extensively explored. In 1992, focusing on prostate cancer, the application of the highly sensitive and specific reverse transcription-polymerase chain reaction (RT-PCR) technology which amplifies predefined mRNA species was introduced.

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Purpose: We compared the efficacy and side effects of intravesical instillations of bacillus Calmette-Guerin (BCG) and epirubicin in patients with carcinoma in situ (CIS) of the bladder.

Materials And Methods: Patients with primary, secondary or concurrent CIS of the bladder were randomized to 81 mg BCG-Connaught (6 weekly instillations) or 50 mg epirubicin (8 weekly instillations). When a complete response (CR), defined as no Ta/T1 or CIS on biopsy and negative cytology, was obtained, patients in the 2 groups received maintenance instillations at months 3, 6, 12, 18, 24, 30 and 36.

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Purpose: The timing of endocrine treatment for prostate cancer remains controversial. The issue is addressed in protocol 30846 of the European Organisation for Research and Treatment of Cancer for patients with lymph node positive cancer without local treatment of the primary tumor.

Materials And Methods: A total of 302 patients with metastatic regional lymph nodes who had not received local treatment for the primary tumor were included in the trial, of whom 234 were randomized to immediate vs delayed endocrine treatment.

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Objectives: This trial was designed to compare the efficacy of Flutamide (FLU) versus Cyproterone acetate (CPA) in men with metastatic prostate cancer and favourable prognostic factors. The primary endpoint of the trial was overall survival, disease specific survival, time to progression and side effects were secondary endpoints. The results pertaining to sexual function were already reported [Br J Cancer 82(2) (2000) 283].

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Purpose: Bacillus Calmette-Guerin (BCG) therapy for superficial bladder cancer is immune dependent and activation of a Th1 immune response is probably required for clinical efficacy. Given the empirical approach to improving BCG therapy we investigated in a mouse model the consequences of modifications in BCG therapy with regard to Th1 and Th2 cytokine responses in the bladder. These studies may provide a rationale for possible modifications of the established clinical treatment protocol.

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Background: Inappropriate quality management of reverse transcription-PCR (RT-PCR) assays for the detection of blood-borne prostate cancer (PCa) cells hampers clinical conclusions. Improvement of the RT-PCR methodology for prostate-specific antigen (PSA) mRNA should focus on an appropriate numeric definition of the performance of the assay and correction for PSA mRNA that is not associated with PCa cells.

Methods And Results: Repeated (RT-)PCR tests for PSA mRNA in single blood specimens from PCa patients and PCa-free controls, performed by four international institutions, showed a large percentage (approximately equal to 50%) of divergent test results.

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The objective of the pilot study is to measure the changes in health-related quality of life (HRQOL, general and prostate specific) 3 months after the disease has been diagnosed in men with prostate cancer. The results are compared with benign prostate hyperplasia (BPH) patients. Also the influence of psychosocial factors (distress, coping and social support) on the experienced changes in health-related quality of life is studied for both patient groups.

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Background: Recombinant activated factor VII (factor VIIa) has prohaemostatic effects in bleeding patients with coagulation abnormalities. We aimed to test the hypothesis that recombinant factor VIIa could reduce perioperative blood loss in patients with normal coagulation systems. Therefore, we assessed safety and efficacy of this drug in patients undergoing retropubic prostatectomy, which is often associated with major blood loss and need for transfusion.

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