Accelerated larvae development of Ascaris lumbricoides eggs with ultraviolet radiation |
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| Institution: | 1. Department of Molecular and Cellular Parasitology, Graduate School of Medicine, Juntendo University, 2-1-1 Hongo, Bunkyo-ku, Tokyo 113-8421, Japan;2. R & D Strategy Department, Yokohama Research Center, Mitsubishi Chemical Corporation, 1000 Kamoshida-cho, Aoba, Yokohama 227-8502, Japan;3. Department of Life Science, Faculty of Science and Engneering, Setsunan University, 17-8 Ikeda-naka-machi, Neyagawa, Osaka 572-8508, Japan;4. Department of Chemistry, Faculty of International Liberal Arts, Juntendo University, 2-1-1 Hongo, Bunkyo-ku, Tokyo 113-8421, Japan;5. Laboratory of Proteomics and Biomolecular Science, Biomedical Research Center, Graduate School of Medicine, Juntendo University, 2-1-1 Hongo, Bunkyo-ku, Tokyo 113-8421, Japan;6. Department of Parasitology, National Institute of Infectious Diseases, Toyama 1-23-1, Shinjuku-ku, Tokyo 162-8640, Japan;1. Department of Morphology, Center of Biology and Health Sciences, Universidade Federal de Sergipe, São Cristovão, Sergipe 49100-000, Brazil;2. Department of Parasitology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais 31270-901, Brazil |
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| Abstract: | In order to investigate the effect of UV radiation on the development of Ascaris lumbricoides larvae, eggs were exposed to increasing UV doses. Filtered wastewater from the secondary effluent taken from the Damascus wastewater treatment plant (DWTP) was used as irradiation and incubation medium. The progressive and accelerated embryonation stages were microscopically observed and the percentages of completely developed larvae were determined weekly. Results indicated that the UV radiation accelerated the development of larvae with increasing UV dose. Preliminary information about the relationship between the UV radiation dose and rate of embryonation is also presented. |
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