The effects of density gradient centrifugation through silane-coated silica particles (PureSperm) using 100, 200, 300 and 500 g on bacterial contamination of sperm samples and recovery of motile spermatozoa from sperm samples were investigated with conventional culturing techniques and microscopic visual assessment. The recovery of motile spermatozoa was variable and was not improved using 500 g compared to the recommended 300 g. The bacterial contamination was highly decreased by gradient centrifugation through PureSperm and was almost abolished when strict aseptic techniques were used, with changes to sterile Pasteur pipettes and tubes prior to washing procedures.

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Chlamydia trachomatis serum IgA in the male partner of the infertile couple has an additive value to IgG in predicting pregnancy chances, and serum IgA and IgG are associated with subtle negative changes in semen characteristics.

One hundred and seventy two patients with benign prostatic hyperplasia (BPH) were treated with transurethral microwave thermotherapy (TUMT) using Prostcare (Bruker Spectrospin). The treatment was performed with an effect of 52 W and a frequency of 915 MHz, which was generally well tolerated and no serious side effects were observed. In the majority of the patients there was an improvement of subjective symptoms with a significant decrease in Madsen and bothering scores after treatment. In the total patient group, Qmax and voided urine volume were increased slightly, but not statistically significantly. The patients were divided in responders and non-responders, based on Madsen symptom score after 3 months or if complementary treatments were necessary during the follow up period of one year. No significant differences between the groups were observed regarding pretreatment variables except that patients in the responder group experienced the treatment more painful than non-responders. Qmax in the responder group was significantly improved at 6 and 12 months follow up. PSA levels increased significantly after the treatment. Routine evaluation using flow rate, estimation of prostatic size, measurement of residual urine volume and cystoscopy does not give sufficient information for predicting treatment outcome.

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