We aimed to evaluate the effect of acetylsalicylic acid (ASA) treatment on diabetes-induced erectile dysfunction. Adult male Sprague-Dawley rats were divided into four groups as follows: (i) control (C), (ii) diabetic (D), (iii) ASA-treated control (C+ASA) and (iv) ASA-treated diabetic (D+ASA) groups. In groups 2 and 4, diabetes was induced by injection of 35 mg kg(-1) streptozotocin. ASA (100 mg kg(-1) day(-1) , orally) was administrated to rats in groups 3 and 4 for 8 weeks. Both intracavernosal pressure (ICP) and mean arterial blood pressure (MAP) were measured in in vivo studies. In organ bath, the relaxation responses to acetylcholine (ACh), electrical field stimulation (EFS) and sodium nitroprusside were tested in corpus cavernosum (CC) strips. The mRNA expression for neuronal nitric oxide synthase (nNOS) was calculated using reverse transcription polymerase chain reaction technique. In in vivo experiments, diabetic rats displayed reduced ICP/MAP values, which were normalised with ASA treatment. The relaxant response to high-dose ACh and EFS at low frequencies (1-8 Hz) in CC strips from the D+ASA group were significantly higher when compared to the D group. Treatment with ASA normalised the raised mRNA expressions of nNOS in diabetic penile tissues. ASA may be involved in mRNA of protein synthesis of NO released from nonadrenergic and noncholinergic cavernosal nerve in diabetes.

Suture materials are widely used in urological surgery especially in regions that are in contact with urine. In this study, we aimed to compare polyglactine 910, chromed catgut and polydioxanone sutures according to stone formation and inflammation, congestion and foreign body reaction that occur on bladder mucosa. Cystotomy procedure was performed, in three groups of Wistar female rats, with 4/0 polyglactine 910, 4/0 chromed catgut and 4/0 polydioxanone sutures. All groups were divided into two sub-groups with 4 and 8-week follow up periods. Rats were treated with 20 mg kg(-1) day(-1) Ofloxacin (i.p.) daily until the seventh post-operative day. Urinary pH, leucocyte esterase and nitrite levels were determined. All rats were killed at the end of the follow-up period and stone formation on sutures and degrees of tissue reactions (inflammation, congestion and foreign body reaction) on bladder mucosa were compared. Tissue reactions were evaluated by the same pathologist (S. K.). Chi-square and Student's t test were used in statistical analysis (p<0.05). There was no significant difference between the mean weights of the groups. Leucocyte esterase and nitrite were negative in urine analyses. There was no significant difference between urinary pH levels of the groups with 4 and 8 weeks follow-up (p>0.05). Although the difference between the degrees of congestion in groups was not statistically significant (p>0.05), there were statistically significant differences between the degrees of inflammation and foreign body reaction in groups. Although the duration of urinary contact of suture is the main factor in stone formation on suture material, tissue reaction on mucosa and the physical structure of suture also affect this formation. We observed lower degrees of inflammation and foreign body reaction with 4/0 polydioxanone and no stone formation. We believe that polydioxanone may be useful and reliable in urological surgery due to these properties.

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Double-J ureteral stenting is commonly used in urological practice and has various complications. We report a patient with a renal parenchymal perforation and perirenal hematoma due to a double-J ureteral stent in a solitary kidney. This complication of ureteral stents is rarely observed and is life-threatening.