Nitrofurantoin is a drug used in the antibacterial treatment of urinary tract infections (UTIs) for over 60 years. The aim of our study was to investigate the possible effects of nitrofurantoin, which is commonly used as a urinary tract antiseptic, on bladder contractions in male rats. Bladder tissues obtained from male Sprague-Dawley rats were used in the study (n=24). After decapitation, bladder tissues were suspended in an isolated organ bath of 5 ml containing a Krebs-Ringer bicarbonate solution by applying a tension of 1.5 grams. Nitrofurantoin was administered to three groups at doses of 50, 500 and 1000 μM, respectively. The area, peak-to-peak (p-p) and frequency values of bladder contractions were analyzed before and after administration of nitrofurantoin. The data obtained from the analysis were evaluated using the Paired T-Test in the IBM SPSS Statistics Software. Nitrofurantoin was observed to have an inhibitory effect on bladder contractions at all doses. The decrease in the area and peak-to-peak values was statistically significant at all doses (P
Key words: Contraction, nitrofurantoin, tissue bath, urinary bladder
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