Pathogen monitoring in indoor systems of tilapia aquaculture in Bafq, Iran

In recent years, aquatic diseases have damaged aquaculture industry in different areas of the world. Although tilapias are known as resistant fish against different pathogens, but there are some reports about infectious diseases of tilapia. Tilapia aquaculture in Iran is in the beginning stage. So, planning for hygiene observations and preventing of disease prevalence must be considered. Tilapia hatchery and indoor systems of National Research Center of Saline water Aquatics were monitored for infectious disease from October 2012 to February 2014. Unusual locomotion/feeding or uncommon signs in the shape or body surface of cultured tilapias, fries and eggs or exceed mortalities were mentioned for bacterial, fungal, parasitic or viral pathogens. Infectious agents in this study were bacteria Streptococcus and Edwardsiella, the fungi Penicillium and Aspergillus and parasitic monogeneans Gyrodactylus and Dactylogyrus. No viral agent was diagnosed. Although recorded pathogens were rarely observed during the study but much attention must be paid for hygiene monitoring and instruction performance

Radiographic Findings and Serological Tests for Diagnosis of Helicobacter Pylori Infection in Dyspeptic Patients

Abstract Background & aim: With different methods for diagnosing H. pylori infections the aim of this study was to compare barium swallows radiographic findings and serological tests for diagnosis of Helicobacter pylori infection in dyspeptic patients. Methods: In this analytic cross-sectional study, 60 patients with documented gastric or duodenal ulcer, referring to Yasuj Shahid Mofateh Clinic No.2 were randomly selected. For all patients, Serologic testing determining the Helicobacter pylori infection was performed using specific IgG antibody titer. Afterward, barium swallow radiograph was performed on all patients. The results of the diagnostic procedure was evaluated by the indices of sensitivity, specificity, positive predictive value, negative predictive value, the percentage of false positives, the percentage of false negative and true accuracy with 95% confidence interval were analyzed. Results: From a total of 60 serological testing, 37 patients (61.6 %) had positive and 23 (39.4 percent) had negative results. Barium swallows radiography of 7 out of 60 patients (11.7 percent) was positive. Among patients with positive serology, 5 patients had positive and 2 patients had negative results. Barium swallows sensitivity and specificity of serological tests was estimated 13.5 and 91 percent respectively. Conclusion: According to the high specificity percent, barium swallow radiography method can be considered as a confirmatory method in the diagnosis of H. pylori infection. Key words: Helicobacter pylori, serology, barium swallow, specificity, sensitivit