Our results indicate that the differences in biological behaviour of malignant mesothelioma in long-term and short-term survivors may be explained in part by differences in tumour growth fraction and that proliferation index could represent an important prognostic parameter for this tumour.

The purpose of this study was to compare the efficacy of a 14-day course of prulifloxacin 600 mg with standard antibiotic therapy for the treatment of chronic prostatitis due to Chlamydia trachomatis (Ct) infection. All patients with clinical and instrumental diagnosis of bacterial chronic prostatitis (CP) due to Ct infection were enrolled. After randomization, all patients were administered oral prulifloxacin 600 mg once daily for 14 days or doxycycline 100 mg orally twice daily for 21 days. At enrollment and 30 days after beginning treatment, all patients underwent microbiological cultures for uropathogens bacteria and yeasts, DNA extraction and mucosal IgA evaluation for Ct diagnosis, seminal plasma IL-8 evaluation and serum IgA and IgG anti-Ct analysis. The National Institutes of Health - Chronic Prostatitis Symptom Index (NIH-CPSI) was given to each patient. A total of 109 patients received prulifloxacin and 102 received standard therapy. Prulifloxacin had clinical efficacy rates equivalent to standard therapy (82.5% vs. 79.9%) (P = 0.08) and showed superior microbiological efficacy rates compared to standard therapy, in terms of decreasing mucosal IgA (P < 0.001) and IL-8 levels (P < 0.001). Prulifloxacin was also equivalent to standard therapy for clinical success, as demonstrated by a decrease in the number of patients affected by CP due to Ct infection.

To investigate the cardiovascular effects of pathophysiological levels of brain natriuretic peptide (BNP), 7 healthy subjects were submitted to equilibrium radionuclide angiocardiography in baseline conditions and during BNP infusion at increasing doses (4, 8, 10 and 12 pmol/kg·min for 20 min each). BNP induced a progressive, significant reduction in left ventricular end diastolic volume, stroke volume and end systolic volume and an increase in ejection fraction and heart rate. Cardiac output, arterial pressure and peripheral vascular resistance were unchanged. Activation of the sympathetic nervous system, as indicated by the significant increase in plasma norepinephrine levels, probably played a contributory role in the maintenance of cardiovascular homeostasis. These results indicate that BNP, at pathophysiological plasma concentrations, influences cardiovascular homeostasis in man.

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