Cross-sectional surveys and subtype classification of human Blastocystis isolates from four epidemiological settings in China
The prevalence and geographical distribution of the intestinal protozoa Blastocystis in humans across China is unknown, and the relative importance of different subtypes has yet to be investigated. We assessed the community prevalence and relative frequencies of different Blastocystis subtypes in fo...
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| Veröffentlicht in: | Parasitology research (1987) 2007-12, Vol.102 (1), p.83-90 |
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| creator | LI, Lan-Hua ZHANG, Xiao-Ping ZHOU, Xiao-Nong SHAN LV LING ZHANG YOSHIKAWA, Hisao ZHILIANG WU STEINMANN, Peter UTZINGER, Jürg TONG, Xiao-Mei CHEN, Shao-Hong |
| description | The prevalence and geographical distribution of the intestinal protozoa Blastocystis in humans across China is unknown, and the relative importance of different subtypes has yet to be investigated. We assessed the community prevalence and relative frequencies of different Blastocystis subtypes in four epidemiological settings in China, i.e., Shanghai municipality, Yongjia county (Zhejiang province), Eryuan county, and Menghai county (both Yunnan province). Blastocystis infection was detected with the culture method, and the subtype was identified with polymerase chain reaction using a set of subtype-specific primers. The prevalence at the four study settings was 1.9, 5.9, 18.4, and 32.6%, respectively. People aged greater than or equal to 60 years had a higher prevalence in the former two settings, Shanghai and Yongjia, whereas the highest infection rate was found among individuals aged 10-17 years in the latter two settings, Eryuan and Menghai. A higher prevalence was found in men in the former two settings but in women in the latter two settings. Five different Blastocystis subtypes were identified from the 192 isolates. Subtype 3 was the predominant type, followed by subtype 1. In conclusion, the epidemiology of Blastocystis varies across China. |
| doi_str_mv | 10.1007/s00436-007-0727-0 |
| format | Article |
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We assessed the community prevalence and relative frequencies of different Blastocystis subtypes in four epidemiological settings in China, i.e., Shanghai municipality, Yongjia county (Zhejiang province), Eryuan county, and Menghai county (both Yunnan province). Blastocystis infection was detected with the culture method, and the subtype was identified with polymerase chain reaction using a set of subtype-specific primers. The prevalence at the four study settings was 1.9, 5.9, 18.4, and 32.6%, respectively. People aged greater than or equal to 60 years had a higher prevalence in the former two settings, Shanghai and Yongjia, whereas the highest infection rate was found among individuals aged 10-17 years in the latter two settings, Eryuan and Menghai. A higher prevalence was found in men in the former two settings but in women in the latter two settings. Five different Blastocystis subtypes were identified from the 192 isolates. Subtype 3 was the predominant type, followed by subtype 1. In conclusion, the epidemiology of Blastocystis varies across China.</description><identifier>ISSN: 0932-0113</identifier><identifier>EISSN: 1432-1955</identifier><identifier>DOI: 10.1007/s00436-007-0727-0</identifier><identifier>PMID: 17912552</identifier><identifier>CODEN: PARREZ</identifier><language>eng</language><publisher>Berlin: Springer</publisher><subject>Adolescent ; Adult ; Age Distribution ; Animals ; Biological and medical sciences ; Blastocystis - classification ; Blastocystis - isolation & purification ; Blastocystis Infections - epidemiology ; Blastocystis Infections - parasitology ; Child ; China - epidemiology ; Cross-Sectional Studies ; Female ; Fundamental and applied biological sciences. Psychology ; General aspects ; General aspects and techniques. Study of several systematic groups. Models ; Humans ; Invertebrates ; Male ; Middle Aged ; RNA, Protozoan - genetics ; RNA, Ribosomal - genetics ; Young Adult</subject><ispartof>Parasitology research (1987), 2007-12, Vol.102 (1), p.83-90</ispartof><rights>2008 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c329t-2aa5c1b9b3b3c4a94c2073fb9134fc75cbb2707002d621a9af6463aaa21f3a673</citedby><cites>FETCH-LOGICAL-c329t-2aa5c1b9b3b3c4a94c2073fb9134fc75cbb2707002d621a9af6463aaa21f3a673</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27922,27923</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=19946773$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/17912552$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>LI, Lan-Hua</creatorcontrib><creatorcontrib>ZHANG, Xiao-Ping</creatorcontrib><creatorcontrib>ZHOU, Xiao-Nong</creatorcontrib><creatorcontrib>SHAN LV</creatorcontrib><creatorcontrib>LING ZHANG</creatorcontrib><creatorcontrib>YOSHIKAWA, Hisao</creatorcontrib><creatorcontrib>ZHILIANG WU</creatorcontrib><creatorcontrib>STEINMANN, Peter</creatorcontrib><creatorcontrib>UTZINGER, Jürg</creatorcontrib><creatorcontrib>TONG, Xiao-Mei</creatorcontrib><creatorcontrib>CHEN, Shao-Hong</creatorcontrib><title>Cross-sectional surveys and subtype classification of human Blastocystis isolates from four epidemiological settings in China</title><title>Parasitology research (1987)</title><addtitle>Parasitol Res</addtitle><description>The prevalence and geographical distribution of the intestinal protozoa Blastocystis in humans across China is unknown, and the relative importance of different subtypes has yet to be investigated. We assessed the community prevalence and relative frequencies of different Blastocystis subtypes in four epidemiological settings in China, i.e., Shanghai municipality, Yongjia county (Zhejiang province), Eryuan county, and Menghai county (both Yunnan province). Blastocystis infection was detected with the culture method, and the subtype was identified with polymerase chain reaction using a set of subtype-specific primers. The prevalence at the four study settings was 1.9, 5.9, 18.4, and 32.6%, respectively. People aged greater than or equal to 60 years had a higher prevalence in the former two settings, Shanghai and Yongjia, whereas the highest infection rate was found among individuals aged 10-17 years in the latter two settings, Eryuan and Menghai. A higher prevalence was found in men in the former two settings but in women in the latter two settings. Five different Blastocystis subtypes were identified from the 192 isolates. Subtype 3 was the predominant type, followed by subtype 1. In conclusion, the epidemiology of Blastocystis varies across China.</description><subject>Adolescent</subject><subject>Adult</subject><subject>Age Distribution</subject><subject>Animals</subject><subject>Biological and medical sciences</subject><subject>Blastocystis - classification</subject><subject>Blastocystis - isolation & purification</subject><subject>Blastocystis Infections - epidemiology</subject><subject>Blastocystis Infections - parasitology</subject><subject>Child</subject><subject>China - epidemiology</subject><subject>Cross-Sectional Studies</subject><subject>Female</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>General aspects</subject><subject>General aspects and techniques. Study of several systematic groups. Models</subject><subject>Humans</subject><subject>Invertebrates</subject><subject>Male</subject><subject>Middle Aged</subject><subject>RNA, Protozoan - genetics</subject><subject>RNA, Ribosomal - genetics</subject><subject>Young Adult</subject><issn>0932-0113</issn><issn>1432-1955</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2007</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNpFkD1vFDEURS0EIkvgB9AgN9ANPH-MHZewAhIpEg3UozdeOzGaGS9-HqQt-O94tCulsa-ezr3FYeytgI8CwH4iAK1M12IHVrbnGdsJrWQnXN8_ZztwLYMQ6oq9IvoNIKzR-iW7EtYJ2fdyx_7tSybqKPia8oITp7X8DSfiuBxaHuvpGLifkCjF5HGDeI78cZ1x4V_avWZ_opqIJ8oT1kA8ljzzmNfCwzEdwpzylB9at22HWtPy0NiF7x_Tgq_Zi4gThTeX_5r9-vb15_62u__x_W7_-b7zSrraScTei9GNalReo9NeglVxdELp6G3vx1FasADyYKRAh9FooxBRiqjQWHXNPpx3jyX_WQPVYU7kwzThEvJKg7nR4gaMaqA4g37TUkIcjiXNWE6DgGFzPpydD1vcnA_QOu8u4-s4h8NT4yK5Ae8vAFLTEAsuPtET55w21ir1H0vojKc</recordid><startdate>20071201</startdate><enddate>20071201</enddate><creator>LI, Lan-Hua</creator><creator>ZHANG, Xiao-Ping</creator><creator>ZHOU, Xiao-Nong</creator><creator>SHAN LV</creator><creator>LING ZHANG</creator><creator>YOSHIKAWA, Hisao</creator><creator>ZHILIANG WU</creator><creator>STEINMANN, Peter</creator><creator>UTZINGER, Jürg</creator><creator>TONG, Xiao-Mei</creator><creator>CHEN, Shao-Hong</creator><general>Springer</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>20071201</creationdate><title>Cross-sectional surveys and subtype classification of human Blastocystis isolates from four epidemiological settings in China</title><author>LI, Lan-Hua ; ZHANG, Xiao-Ping ; ZHOU, Xiao-Nong ; SHAN LV ; LING ZHANG ; YOSHIKAWA, Hisao ; ZHILIANG WU ; STEINMANN, Peter ; UTZINGER, Jürg ; TONG, Xiao-Mei ; CHEN, Shao-Hong</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c329t-2aa5c1b9b3b3c4a94c2073fb9134fc75cbb2707002d621a9af6463aaa21f3a673</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2007</creationdate><topic>Adolescent</topic><topic>Adult</topic><topic>Age Distribution</topic><topic>Animals</topic><topic>Biological and medical sciences</topic><topic>Blastocystis - classification</topic><topic>Blastocystis - isolation & purification</topic><topic>Blastocystis Infections - epidemiology</topic><topic>Blastocystis Infections - parasitology</topic><topic>Child</topic><topic>China - epidemiology</topic><topic>Cross-Sectional Studies</topic><topic>Female</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>General aspects</topic><topic>General aspects and techniques. Study of several systematic groups. Models</topic><topic>Humans</topic><topic>Invertebrates</topic><topic>Male</topic><topic>Middle Aged</topic><topic>RNA, Protozoan - genetics</topic><topic>RNA, Ribosomal - genetics</topic><topic>Young Adult</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>LI, Lan-Hua</creatorcontrib><creatorcontrib>ZHANG, Xiao-Ping</creatorcontrib><creatorcontrib>ZHOU, Xiao-Nong</creatorcontrib><creatorcontrib>SHAN LV</creatorcontrib><creatorcontrib>LING ZHANG</creatorcontrib><creatorcontrib>YOSHIKAWA, Hisao</creatorcontrib><creatorcontrib>ZHILIANG WU</creatorcontrib><creatorcontrib>STEINMANN, Peter</creatorcontrib><creatorcontrib>UTZINGER, Jürg</creatorcontrib><creatorcontrib>TONG, Xiao-Mei</creatorcontrib><creatorcontrib>CHEN, Shao-Hong</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Parasitology research (1987)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>LI, Lan-Hua</au><au>ZHANG, Xiao-Ping</au><au>ZHOU, Xiao-Nong</au><au>SHAN LV</au><au>LING ZHANG</au><au>YOSHIKAWA, Hisao</au><au>ZHILIANG WU</au><au>STEINMANN, Peter</au><au>UTZINGER, Jürg</au><au>TONG, Xiao-Mei</au><au>CHEN, Shao-Hong</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Cross-sectional surveys and subtype classification of human Blastocystis isolates from four epidemiological settings in China</atitle><jtitle>Parasitology research (1987)</jtitle><addtitle>Parasitol Res</addtitle><date>2007-12-01</date><risdate>2007</risdate><volume>102</volume><issue>1</issue><spage>83</spage><epage>90</epage><pages>83-90</pages><issn>0932-0113</issn><eissn>1432-1955</eissn><coden>PARREZ</coden><abstract>The prevalence and geographical distribution of the intestinal protozoa Blastocystis in humans across China is unknown, and the relative importance of different subtypes has yet to be investigated. We assessed the community prevalence and relative frequencies of different Blastocystis subtypes in four epidemiological settings in China, i.e., Shanghai municipality, Yongjia county (Zhejiang province), Eryuan county, and Menghai county (both Yunnan province). Blastocystis infection was detected with the culture method, and the subtype was identified with polymerase chain reaction using a set of subtype-specific primers. The prevalence at the four study settings was 1.9, 5.9, 18.4, and 32.6%, respectively. People aged greater than or equal to 60 years had a higher prevalence in the former two settings, Shanghai and Yongjia, whereas the highest infection rate was found among individuals aged 10-17 years in the latter two settings, Eryuan and Menghai. A higher prevalence was found in men in the former two settings but in women in the latter two settings. Five different Blastocystis subtypes were identified from the 192 isolates. Subtype 3 was the predominant type, followed by subtype 1. In conclusion, the epidemiology of Blastocystis varies across China.</abstract><cop>Berlin</cop><pub>Springer</pub><pmid>17912552</pmid><doi>10.1007/s00436-007-0727-0</doi><tpages>8</tpages></addata></record> |
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| subjects | Adolescent Adult Age Distribution Animals Biological and medical sciences Blastocystis - classification Blastocystis - isolation & purification Blastocystis Infections - epidemiology Blastocystis Infections - parasitology Child China - epidemiology Cross-Sectional Studies Female Fundamental and applied biological sciences. Psychology General aspects General aspects and techniques. Study of several systematic groups. Models Humans Invertebrates Male Middle Aged RNA, Protozoan - genetics RNA, Ribosomal - genetics Young Adult |
| title | Cross-sectional surveys and subtype classification of human Blastocystis isolates from four epidemiological settings in China |
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