Effects of varicocele on electrical field stimulation-induced biphasic twitch responses in the ipsilateral and contralateral rat vasa deferentia.

AIM: Although little is known about the mechanisms, varicocele is considered as one of the factors leading to male infertility. Since reduced motility of the vas deferens was shown to contribute to male infertility, in this study we aimed to investigate the effect of varicocele on electrical field stimulation (EFS)-induced biphasic contractions of the vas deferens in order to evaluate the effect of varicocele on the motility of the vas deferens. MATERIAL AND METHODS: A total of 26 Sprague-Dawley rats (200-250 g) were assigned randomly into two groups: sham (n = 10) and varicocele (n = 16). Varicocele was produced by partial obstruction of the left renal vein. Four weeks after the surgical procedure, vasa deferentia were harvested and EFS-induced responses were recorded from the strips prepared from ipsilateral and contralateral sides via Grass isometric force displacement transducers. Exogenous alpha-beta methyl ATP was applied at the concentration of 10(-5)M to the vasa deferentia strips, and exogenous noradrenalin was applied cumulatively at the concentrations between 10(-7) and 10(-4)M. At the end of each experiment, 80 mM KCl was applied to induce contractions. All contractions were expressed as the percentage of the 80 mM KCl-induced contractions. RESULTS: Varicocele significantly inhibited both phases of EFS-induced biphasic contractions in the ipsilateral side, whereas in the contralateral site it did not produce any change. However, there was no change in exogenously applied alpha-beta methyl ATP, noradrenalin and KCl-evoked contractions of the vasa deferentia obtained from both sides. CONCLUSIONS: These results suggest that varicocele affects the ipsilateral vas deferens motility by reducing neurotransmitter release.

Negative appendectomy experience in children.

BACKGROUND: The aim of this study was to discuss the findings of our patients who had negative appendectomy. PATIENTS AND METHODS: Hospital records of negative appendectomy for abdominal pain patients were evaluated retrospectively. RESULTS: Negative exploration for acute appendicitis (AP) was done in 149 patients. The most frequent complaints were abdominal pain, vomiting and fever. The commonly established diagnoses after negative exploration were gastroenteritis and urinary infections. However, the frequent pathologies observed during the operation were mesenteric lymphadenitis and Meckel's diverticulum. All patients with systemic disease such as Henoch-Schonlein's purpura operated for AP had it diagnosed during the postoperative course. Interestingly, two different types of worms were found in the lumen of the appendices. CONCLUSION: Despite new techniques, 100% correct diagnosis of AP is still a challenging problem. Furthermore, appendicitis is a deadly disease if not treated properly. Therefore, it is best to perform exploration without undue delay in cases with suspicious AP.

Sequential cytokine levels in the diagnosis of appendicitis.

OBJECTIVE: To determine the diagnostic value of sequential white blood cell count (WBC), tumor necrosis factor-alpha (TNF-alpha) and interleukin-6 (IL-6) in patients with abdominal pain. MATERIAL AND METHODS: Tests were determined at hospital admission and 6 h later in 105 children. Patients who were non-operatively followed and had a normal histopathology were classified as the non-appendicitis (NA) group. Patients with symptoms consistent with appendicitis were classified as the appendicitis group (A). Data were analyzed as positive/negative predictive value, sensitivity, specificity and accuracy rate (AR). The global power of the variables in discriminating the patients between the two groups and advanced/simple appendicitis was assessed from the area under the receiver operating characteristic (ROC). RESULTS: Initial measurements showed WBC to be a valuable diagnostic tool in acute appendicitis (AR = 74 %), whereas IL-6 and TNF-alpha were found not to be valuable. The second measurements revealed higher values, and IL-6 reached its highest AR (89 %). When initial values were evaluated in combination, the highest AR of 73 % was observed with TNF-alpha + WBC. The highest AR (90 %) was seen with IL-6 + TNF-alpha in the second measurements. ROC analysis showed WBC to be the most valuable parameter of the three. The area under the curve (AUC) was 0.750 for the initial measurement and 0.779 for the repeat measurement of WBC (p = 0.001). The most useful diagnostic parameter in discriminating between the simple and the advanced cases was IL-6 as assessed with the ROC curve (p<0.01). CONCLUSIONS: WBC elevation in patients with suspected acute appendicitis is an important parameter supporting the diagnosis at initial admission, whereas IL-6 is a more valuable tool in diagnosing advanced appendicitis.