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The Thaw (解冻)
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1. Epidemic Status 2. Influence of Global Warming 3. Our Work
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1. Epidemic Status
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Neglected Tropical DiseaseNeglected Tropical Disease The PLoS Blog. 2015. Neglected Tropical Diseases: Challenges for the Post-2015 Development Era. Soil-Transmitted Helminth, STH Buruli Ulcer Chagas disease Dengue Dracunculiasis Echinococcosis, ECH Food-Borne Trematode Infections, FBT Human African Trypanosomiasis Leishmaniasis Leprosy Lymphatic Filariasis Rabies Schistosomiasis, SCH (血吸虫病) Cysticercosis Taeniasis, CT Trachoma Yaws
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Schistosoma (血吸虫) Blood
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Major Parasitic DiseasesMajor Parasitic Diseases WHO. 2010. First WHO report on neglected tropical diseases. 千村薜荔人遗矢, 万户萧疏鬼唱歌。 — 毛泽东《送瘟神》
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Lancet. 2014. Human Schistosomiasis. (日本血吸虫) Schistosoma japonicum
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Cercariae (尾蚴) The child form of the parasite which looks like a tadpole.
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<10 s Infested Water Nature Review. Definitive Host( 终宿主 )
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Epidermis human skin Cercariae
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Frequent Contact With Water
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Swimmer’s Itch (游泳者痒疹) /Swimmer’s Itch (游泳者痒疹) / Cercarial Dermatitis (尾蚴性皮炎) Dermatitis (皮炎). Itching and breaking of skin. Raised papules (丘疹). Secondary infections.
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Pathology ( 肝门静脉 ) 300-3000 eggs
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Pathology Granulomatous Responses (肉芽肿)
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Portal hypertension Collateral circulation( 侧支循环 ) Esophageal varices( 食管静脉曲张 ) Hepatosplenomegaly( 肝脾肿大 ) Cachexia( 恶病质 ) Results Markell and Voge's Medical Parasitology
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2. Global Warming
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Mean January Temperatures Across China Am. J. Trop. Med. Hyg. 2008. 78(2), pp. 188–194.
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Snail Temperatures have a significant effect on the survival of the interme- diate host: snail. Acta Tropica. 2005. Control of schistosomiasis in China.
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The Risk & Predicted Risk MapThe Risk & Predicted Risk Map Am. J. Trop. Med. Hyg. 2008. 78(2), pp. 188–194. 20002030 2050
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Highly epidemic and seriously neglected Global warming opens Pandora’s box Acute cases increased 22% than 2002 I’m BACK!I’m BACK! WHO. 2013. Schistosomiasis: Progress report 2001–2011.
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Traditional Faecal Test ( 粪检 ) Reasons: The intestinal wall fibrosis Period of lower egg production Low-intensity infections Traditional Faecal Test: Low efficiency Egg: very low or absent Egg: very low or absent
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ZHOU Xiao-Nong, Chairman of Chinese CDC
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Coding 15,000 proteins 419 270 204 35 8 1 SjSP-13 Nature. 16 July 2009. Vol 460: 345–351. rSP13-ELISA Kit Like HBV Test( 乙肝检测 )
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Clinical Test: a field studyClinical Test: a field study Lancet Infect Dis. 2014. 14: 489–97. Faecal Test (粪检) rSP-13 ELISA
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Results of the field studyResults of the field study Lancet Infect Dis. 2014. 14: 489–97. Faecal Test SP13-ELISA Faecal Test SP13-ELISA * Faecal Test: Traditional Method † SP13-ELISA: Our Work
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Laboratory validation: Specificity of SP13-ELISA 174 human serum samples from Schistosomiasis-free regions(Shanghai) Lancet Infect Dis. 2014. 14: 489–97. SEA-ELISA SP13-ELISA SEA-ELISA SP13-ELISA † SEA-ELISA: Traditional Rapid Diagnosis † SP13-ELISA: Our Work
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WHO, Lancet. 2014, 2006.
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When nature becomes a terrorist, human would have only a dead end.
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Acknowledgements Pro. Yan Zhang Pro. Weiqing Pan
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References: 1. The PLoS Blog. 2015. 2. Jared Diamond. 1997. Guns, Germs, and Steel. 3. Zhou XN, etc 2010. Adv Parasitol 72:145–178. 4. Seto EY, et al. 2011. PLoS Negl Trop Dis 5:e1372. 5. Colley DG, etc. 2014. Lancet 383(9936):2253-2264. 6. Xu X, et al. 2014. Lancet Infect Dis 14(6):489-497. 7. King, ect. 2005. Lancet 365(9470):1561–69. 8. Poulin, R. 2006. Parasitology 132, 143–151. 9. Mouritsen, etc. 2005. Oecologia 146, 476–483. 10. Fenwick, etc. 2007. Elsevier-Academic Press, London, pp. 567–622. 11. Zhou Xiao-Nong, et al. 2008. Am. J. Trop. Med. Hyg. 78(2), pp. 188–194. 12. Gryseels B, etc. Lancet 368, 1106–18. 13. Kenneth J. Ryan, et al. 2004. Textbook of Medical Microbiology and Parasitology. 14. Stothard JR, et al. 2011. Parasitology 138: 1593–606. 15. Bustinduy AL, et al. 2013. Am J Trop Med Hyg 88: 433–40. 16. Zhou Xiao-Nong. 2014. Sci China Life Sci 57: 647–648. 17. Wang LD, etc. 2009. N Engl J Med 360: 121–128. 18. Zhou XN, etc. 2011. PLoS Negl Trop Dis 5: e1408.
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