Application of genetic markers to the identification of recrudescent Plasmodium falciparum infections on the northwestern border of Thailand
Parasite genotyping by the polymerase chain reaction was used to distinguish recrudescent from newly acquired Plasmodium falciparum infections in a Karen population resident on the northwestern border of Thailand where malaria transmission is low (one infection/person/year). Plasmodium falciparum in...
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| Veröffentlicht in: | The American journal of tropical medicine and hygiene 1999-01, Vol.60 (1), p.14-21 |
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| container_title | The American journal of tropical medicine and hygiene |
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| creator | Brockman, A Paul, RE Anderson, TJ Hackford, I Phaiphun, L Looareesuwan, S Nosten, F Day, KP |
| description | Parasite genotyping by the polymerase chain reaction was used to distinguish recrudescent from newly acquired Plasmodium falciparum infections in a Karen population resident on the northwestern border of Thailand where malaria transmission is low (one infection/person/year). Plasmodium falciparum infections were genotyped for allelic variation in three polymorphic antigen loci, merozoite surface proteins-1 and -2 (MSP-1 and -2) and glutamaterich protein (GLURP), before and after antimalarial drug treatment. Population genotype frequencies were measured to provide the baseline information to calculate the probability of a new infection with a different or the same genotype to the initial pretreatment isolate. Overall, 38% of the infections detected following treatment had an identical genotype before and up to 121 days after treatment. These post-treatment genotypes were considered recrudescent because of the low (< 5%) probability of repeated occurrence by chance in the same patient. This approach allows studies of antimalarial drug treatment to be conducted in areas of low transmission since recrudescences can be distinguished confidently from newly acquired infections. |
| doi_str_mv | 10.4269/ajtmh.1999.60.14 |
| format | Article |
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Plasmodium falciparum infections were genotyped for allelic variation in three polymorphic antigen loci, merozoite surface proteins-1 and -2 (MSP-1 and -2) and glutamaterich protein (GLURP), before and after antimalarial drug treatment. Population genotype frequencies were measured to provide the baseline information to calculate the probability of a new infection with a different or the same genotype to the initial pretreatment isolate. Overall, 38% of the infections detected following treatment had an identical genotype before and up to 121 days after treatment. These post-treatment genotypes were considered recrudescent because of the low (< 5%) probability of repeated occurrence by chance in the same patient. 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Plasmodium falciparum infections were genotyped for allelic variation in three polymorphic antigen loci, merozoite surface proteins-1 and -2 (MSP-1 and -2) and glutamaterich protein (GLURP), before and after antimalarial drug treatment. Population genotype frequencies were measured to provide the baseline information to calculate the probability of a new infection with a different or the same genotype to the initial pretreatment isolate. Overall, 38% of the infections detected following treatment had an identical genotype before and up to 121 days after treatment. These post-treatment genotypes were considered recrudescent because of the low (< 5%) probability of repeated occurrence by chance in the same patient. This approach allows studies of antimalarial drug treatment to be conducted in areas of low transmission since recrudescences can be distinguished confidently from newly acquired infections.</description><subject>Alleles</subject><subject>Animals</subject><subject>Antigens, Protozoan - genetics</subject><subject>Biological and medical sciences</subject><subject>DNA, Protozoan - analysis</subject><subject>DNA, Protozoan - chemistry</subject><subject>Drug Resistance, Multiple</subject><subject>Gene Frequency</subject><subject>Genetic Markers</subject><subject>Genetic Variation</subject><subject>Genotype</subject><subject>glutamate-rich protein</subject><subject>Human protozoal diseases</subject><subject>Humans</subject><subject>Infectious diseases</subject><subject>Malaria</subject><subject>Malaria, Falciparum - drug therapy</subject><subject>Malaria, Falciparum - epidemiology</subject><subject>Malaria, Falciparum - parasitology</subject><subject>Medical sciences</subject><subject>merozoite surface protein 1</subject><subject>merozoite surface protein 2</subject><subject>merozoite surface protein 3</subject><subject>Parasitic diseases</subject><subject>Plasmodium falciparum</subject><subject>Plasmodium falciparum - classification</subject><subject>Plasmodium falciparum - drug effects</subject><subject>Plasmodium falciparum - genetics</subject><subject>Polymerase Chain Reaction</subject><subject>Polymorphism, Restriction Fragment Length</subject><subject>Protozoal diseases</subject><subject>Recurrence</subject><subject>Thailand - epidemiology</subject><subject>Tropical medicine</subject><issn>0002-9637</issn><issn>1476-1645</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1999</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqFkc1u1TAQhS0EKpfCng2SF4hdLnbiOPayqgpFqgSLsrYm9rhxyR92oqjvwEPj0CvKjtVYmu-cGc8h5C1nR1FK_RHul6E7cq31UbIjF8_IgYtGFlyK-jk5MMbKQsuqeUlepXTPGFcl52fkTGulKi4P5NfFPPfBwhKmkU6e3uGIS7B0gPgDY6LLRJcOaXA4LsH_A0a0cXWYbG7Qbz2kYXJhHaiH3oYZYn6G0aPd-USzZrcZp7h0G6YF40jbKTqMu9dtB6GH0b0mL7I84ZtTPSffP13dXl4XN18_f7m8uCms0HwpWgtcgAanpFe2bRRKy3mlpHK2BotK2LaqS-nRI7pS5AIN1A7KirUOoDonHx595zj9XPM6Zgj5I33eAac1GalrqUSj_gvyplb5kmUG2SNo45RSRG_mGPINHwxnZk_K_EnK7EkZyQwXWfLu5L22A7q_glM0uf_-1IdkofcRRhvSk69sdKnEE9aFu24LEU0aoO-zKTfbtu2z9mm_AcBfry4</recordid><startdate>19990101</startdate><enddate>19990101</enddate><creator>Brockman, A</creator><creator>Paul, RE</creator><creator>Anderson, TJ</creator><creator>Hackford, I</creator><creator>Phaiphun, L</creator><creator>Looareesuwan, S</creator><creator>Nosten, F</creator><creator>Day, KP</creator><general>ASTMH</general><general>Allen Press</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>M7N</scope><scope>7X8</scope></search><sort><creationdate>19990101</creationdate><title>Application of genetic markers to the identification of recrudescent Plasmodium falciparum infections on the northwestern border of Thailand</title><author>Brockman, A ; Paul, RE ; Anderson, TJ ; Hackford, I ; Phaiphun, L ; Looareesuwan, S ; Nosten, F ; Day, KP</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c491t-bca14a9ad86f8cb78e6c113868dc5ace84cb3526fefeed24efea7a5da230bdaa3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1999</creationdate><topic>Alleles</topic><topic>Animals</topic><topic>Antigens, Protozoan - genetics</topic><topic>Biological and medical sciences</topic><topic>DNA, Protozoan - analysis</topic><topic>DNA, Protozoan - chemistry</topic><topic>Drug Resistance, Multiple</topic><topic>Gene Frequency</topic><topic>Genetic Markers</topic><topic>Genetic Variation</topic><topic>Genotype</topic><topic>glutamate-rich protein</topic><topic>Human protozoal diseases</topic><topic>Humans</topic><topic>Infectious diseases</topic><topic>Malaria</topic><topic>Malaria, Falciparum - drug therapy</topic><topic>Malaria, Falciparum - epidemiology</topic><topic>Malaria, Falciparum - parasitology</topic><topic>Medical sciences</topic><topic>merozoite surface protein 1</topic><topic>merozoite surface protein 2</topic><topic>merozoite surface protein 3</topic><topic>Parasitic diseases</topic><topic>Plasmodium falciparum</topic><topic>Plasmodium falciparum - classification</topic><topic>Plasmodium falciparum - drug effects</topic><topic>Plasmodium falciparum - genetics</topic><topic>Polymerase Chain Reaction</topic><topic>Polymorphism, Restriction Fragment Length</topic><topic>Protozoal diseases</topic><topic>Recurrence</topic><topic>Thailand - epidemiology</topic><topic>Tropical medicine</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Brockman, A</creatorcontrib><creatorcontrib>Paul, RE</creatorcontrib><creatorcontrib>Anderson, TJ</creatorcontrib><creatorcontrib>Hackford, I</creatorcontrib><creatorcontrib>Phaiphun, L</creatorcontrib><creatorcontrib>Looareesuwan, S</creatorcontrib><creatorcontrib>Nosten, F</creatorcontrib><creatorcontrib>Day, KP</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>Algology Mycology and Protozoology Abstracts (Microbiology C)</collection><collection>MEDLINE - Academic</collection><jtitle>The American journal of tropical medicine and hygiene</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Brockman, A</au><au>Paul, RE</au><au>Anderson, TJ</au><au>Hackford, I</au><au>Phaiphun, L</au><au>Looareesuwan, S</au><au>Nosten, F</au><au>Day, KP</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Application of genetic markers to the identification of recrudescent Plasmodium falciparum infections on the northwestern border of Thailand</atitle><jtitle>The American journal of tropical medicine and hygiene</jtitle><addtitle>Am J Trop Med Hyg</addtitle><date>1999-01-01</date><risdate>1999</risdate><volume>60</volume><issue>1</issue><spage>14</spage><epage>21</epage><pages>14-21</pages><issn>0002-9637</issn><eissn>1476-1645</eissn><coden>AJTHAB</coden><abstract>Parasite genotyping by the polymerase chain reaction was used to distinguish recrudescent from newly acquired Plasmodium falciparum infections in a Karen population resident on the northwestern border of Thailand where malaria transmission is low (one infection/person/year). Plasmodium falciparum infections were genotyped for allelic variation in three polymorphic antigen loci, merozoite surface proteins-1 and -2 (MSP-1 and -2) and glutamaterich protein (GLURP), before and after antimalarial drug treatment. Population genotype frequencies were measured to provide the baseline information to calculate the probability of a new infection with a different or the same genotype to the initial pretreatment isolate. Overall, 38% of the infections detected following treatment had an identical genotype before and up to 121 days after treatment. These post-treatment genotypes were considered recrudescent because of the low (< 5%) probability of repeated occurrence by chance in the same patient. This approach allows studies of antimalarial drug treatment to be conducted in areas of low transmission since recrudescences can be distinguished confidently from newly acquired infections.</abstract><cop>Lawrence, KS</cop><pub>ASTMH</pub><pmid>9988316</pmid><doi>10.4269/ajtmh.1999.60.14</doi><tpages>8</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | Alleles Animals Antigens, Protozoan - genetics Biological and medical sciences DNA, Protozoan - analysis DNA, Protozoan - chemistry Drug Resistance, Multiple Gene Frequency Genetic Markers Genetic Variation Genotype glutamate-rich protein Human protozoal diseases Humans Infectious diseases Malaria Malaria, Falciparum - drug therapy Malaria, Falciparum - epidemiology Malaria, Falciparum - parasitology Medical sciences merozoite surface protein 1 merozoite surface protein 2 merozoite surface protein 3 Parasitic diseases Plasmodium falciparum Plasmodium falciparum - classification Plasmodium falciparum - drug effects Plasmodium falciparum - genetics Polymerase Chain Reaction Polymorphism, Restriction Fragment Length Protozoal diseases Recurrence Thailand - epidemiology Tropical medicine |
| title | Application of genetic markers to the identification of recrudescent Plasmodium falciparum infections on the northwestern border of Thailand |
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