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  • Author or Editor: A. Szalmás x
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A history of having substantial Chlamydia trachomatis exposure as detected by serum antibodies is a cofactor of human papillomavirus (HPV) mediated cervical carcinogenesis. In this study, we examined the concurrent C. trachomatis infections in cytologic atypia of the uterine cervix in order to evaluate the impact of C. trachomatis infection in patients with high risk for cervical intraepithelial neoplasia. Cervical scrapes form 707 patients were subjected to PCR amplification with primer sets for HPV and C. trachomatis . Based on negative beta-globin results, 10 specimens were not eligible for further analysis. Oncogenic HPV types were detected in 278 specimens (39.8%). C. trachomatis was found only in six specimens (0.9%). In conclusion, concurrent C. trachomatis infection was uncommon and hence it was an improbable risk factor in cytologic atypia.

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This paper explores correlations between macrophyte occurrence and environmental characteristics recorded in a more than 350 rkm long segment of the main Danube channel in Hungary. The selected river section belongs entirely to the lowland part of the Middle Danube, but it is separated into the mostly gravelly upper and the sandy lower river sections. Two markedly different groups of macrophytes correlated with this separation; the mostly perennial, rooting species (Myriophyllum spicatum, Potamogeton crispus, P. nodosus, P. pectinatus, P. perfoliatus and Zannichellia palustris) preferred the gravelly habitats, while the non-rooting, free-floating macrophytes (Ceratophyllum demersum, Lemna minor, Salvinia natans and Spirodela polyrhiza) occurred mainly in the sandy stretches. Based on current velocity and Secchi transparency, these stretches seemed to provide “more lotic” and “rather lentic” habitats. Data evaluation also revealed that the closer are the river stretches to a water course discharging upstream the more free-floating aquatic plants occur in the main Danube channel.

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