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RSV molecular characterization and specific antibody response in young children with acute lower respiratory infection
The presence of respiratory syncytial virus (RSV) in nasopharyngeal aspirates (NPA) were studied in 254 hospitalized Argentinean children with acute lower respiratory infection tract (ALRI). The specific humoral immune response and partial sequences of the G protein gene were studied in a subset of...
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| Published in: | Journal of clinical virology 2003-05, Vol.27 (1), p.44-51 |
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| creator | Baumeister, Elsa G. Hünicken, Diego S. Savy, Vilma L. |
| description | The presence of respiratory syncytial virus (RSV) in nasopharyngeal aspirates (NPA) were studied in 254 hospitalized Argentinean children with acute lower respiratory infection tract (ALRI). The specific humoral immune response and partial sequences of the G protein gene were studied in a subset of 22 children with RSV confirmed infection. The RSV IgM detection and the RSV IgG titration were made by immunofluorescence assay (IFA) in pairs of sera. The partial RSV G gene sequences were obtained by an RT-PCR amplification directly from de NPAs. RSV was present in 44.5% of the children. The RSV IgM was detected in 22.7 and 68.8% of the first and second sera, respectively. The IgG geometric mean titers of the acute and convalescent sera were 8 and 589. The RSV IgG titration was able to define 86.4% of the RSV confirmed cases. The percentage of coincidence between RSV IgM detection in the second sera and diagnosis by RSV IgG titration was 72.7% and no significant differences were observed. The nucleotide sequence of one group A and three group B viruses were identified. The first one was related with circulating viruses in Madrid, Montevideo and Mozambique during 1992, 1989 and 1999, respectively. The three sequences identified as group B viruses were closely related with circulating viruses in 1998 from South Africa and Canada during 1999 and 2000. The data obtained in our study provide the first approach at the molecular level (nucleotide) of the RSV circulating strains in Argentina and the lack of genotype patterns previously determined make necessary a continuous molecular surveillance in order to contribute to the understanding of the behavior of this virus in our community. |
| doi_str_mv | 10.1016/S1386-6532(02)00125-7 |
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The specific humoral immune response and partial sequences of the G protein gene were studied in a subset of 22 children with RSV confirmed infection. The RSV IgM detection and the RSV IgG titration were made by immunofluorescence assay (IFA) in pairs of sera. The partial RSV G gene sequences were obtained by an RT-PCR amplification directly from de NPAs. RSV was present in 44.5% of the children. The RSV IgM was detected in 22.7 and 68.8% of the first and second sera, respectively. The IgG geometric mean titers of the acute and convalescent sera were 8 and 589. The RSV IgG titration was able to define 86.4% of the RSV confirmed cases. The percentage of coincidence between RSV IgM detection in the second sera and diagnosis by RSV IgG titration was 72.7% and no significant differences were observed. The nucleotide sequence of one group A and three group B viruses were identified. The first one was related with circulating viruses in Madrid, Montevideo and Mozambique during 1992, 1989 and 1999, respectively. The three sequences identified as group B viruses were closely related with circulating viruses in 1998 from South Africa and Canada during 1999 and 2000. 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The specific humoral immune response and partial sequences of the G protein gene were studied in a subset of 22 children with RSV confirmed infection. The RSV IgM detection and the RSV IgG titration were made by immunofluorescence assay (IFA) in pairs of sera. The partial RSV G gene sequences were obtained by an RT-PCR amplification directly from de NPAs. RSV was present in 44.5% of the children. The RSV IgM was detected in 22.7 and 68.8% of the first and second sera, respectively. The IgG geometric mean titers of the acute and convalescent sera were 8 and 589. The RSV IgG titration was able to define 86.4% of the RSV confirmed cases. The percentage of coincidence between RSV IgM detection in the second sera and diagnosis by RSV IgG titration was 72.7% and no significant differences were observed. The nucleotide sequence of one group A and three group B viruses were identified. The first one was related with circulating viruses in Madrid, Montevideo and Mozambique during 1992, 1989 and 1999, respectively. The three sequences identified as group B viruses were closely related with circulating viruses in 1998 from South Africa and Canada during 1999 and 2000. The data obtained in our study provide the first approach at the molecular level (nucleotide) of the RSV circulating strains in Argentina and the lack of genotype patterns previously determined make necessary a continuous molecular surveillance in order to contribute to the understanding of the behavior of this virus in our community.</description><subject>Acute Disease</subject><subject>Acute lower respiratory infection in children</subject><subject>Antibodies, Viral - blood</subject><subject>Child</subject><subject>G gene sequences</subject><subject>Humans</subject><subject>IgG</subject><subject>IgM</subject><subject>Immunoglobulin G - blood</subject><subject>Immunoglobulin M - blood</subject><subject>Phylogeny</subject><subject>Respiratory syncytial virus</subject><subject>Respiratory Syncytial Virus Infections - epidemiology</subject><subject>Respiratory Syncytial Virus Infections - immunology</subject><subject>Respiratory Syncytial Virus Infections - virology</subject><subject>Respiratory Syncytial Viruses - classification</subject><subject>Respiratory Syncytial Viruses - genetics</subject><subject>Respiratory Syncytial Viruses - immunology</subject><subject>Respiratory Tract Infections - epidemiology</subject><subject>Respiratory Tract Infections - immunology</subject><subject>Respiratory Tract Infections - virology</subject><subject>Sequence Analysis, DNA</subject><subject>Viral Proteins - genetics</subject><issn>1386-6532</issn><issn>1873-5967</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2003</creationdate><recordtype>article</recordtype><recordid>eNqFkVtr3DAQhUVoaDbb_oQUPZXmwYmulv1UQmguEAgkTV6FLI27Kl5rK9kbNr8-8u6WPAYGNAPfzEHnIHRCyRkltDx_pLwqi1Jy9oOwU0Iok4U6QDNaKV7IulSfcv8fOULHKf3NkORCfUZHlCmmJKtmaP3w-IyXoQM7diZiuzDR2AGifzWDDz02vcNpBda33uZh8E1wGxwhrUKfAPseb8LY_8mLvnMRevzihwU2dhwAd-EF4pb10QwhbjLegp3ufkGHrekSfN2_c_R09ev35U1xd399e3lxV1hes6GwoqlbZipVCRCs4TVIQYxkraSWK5k_bRtmGtc60RDaisoxzpxylTN5EpzP0ffd3VUM_0ZIg176ZKHrTA9hTFpxJgStyw_BbKsqazqBcgfaGFKK0OpV9EsTN5oSPSWjt8noyXZNck3JZJ05-rYXGJsluPetfRQZ-LkDIPux9hB1sh56C87HbJp2wX8g8Qb7MaA9</recordid><startdate>20030501</startdate><enddate>20030501</enddate><creator>Baumeister, Elsa G.</creator><creator>Hünicken, Diego S.</creator><creator>Savy, Vilma L.</creator><general>Elsevier B.V</general><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>7U9</scope><scope>H94</scope><scope>7X8</scope></search><sort><creationdate>20030501</creationdate><title>RSV molecular characterization and specific antibody response in young children with acute lower respiratory infection</title><author>Baumeister, Elsa G. ; Hünicken, Diego S. ; Savy, Vilma L.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c392t-c4b9f2a8784e42b39e540a52f51c375012cb2abdfd4b01f48d232d7d8da1f4433</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2003</creationdate><topic>Acute Disease</topic><topic>Acute lower respiratory infection in children</topic><topic>Antibodies, Viral - blood</topic><topic>Child</topic><topic>G gene sequences</topic><topic>Humans</topic><topic>IgG</topic><topic>IgM</topic><topic>Immunoglobulin G - blood</topic><topic>Immunoglobulin M - blood</topic><topic>Phylogeny</topic><topic>Respiratory syncytial virus</topic><topic>Respiratory Syncytial Virus Infections - epidemiology</topic><topic>Respiratory Syncytial Virus Infections - immunology</topic><topic>Respiratory Syncytial Virus Infections - virology</topic><topic>Respiratory Syncytial Viruses - classification</topic><topic>Respiratory Syncytial Viruses - genetics</topic><topic>Respiratory Syncytial Viruses - immunology</topic><topic>Respiratory Tract Infections - epidemiology</topic><topic>Respiratory Tract Infections - immunology</topic><topic>Respiratory Tract Infections - virology</topic><topic>Sequence Analysis, DNA</topic><topic>Viral Proteins - genetics</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Baumeister, Elsa G.</creatorcontrib><creatorcontrib>Hünicken, Diego S.</creatorcontrib><creatorcontrib>Savy, Vilma L.</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Virology and AIDS Abstracts</collection><collection>AIDS and Cancer Research Abstracts</collection><collection>MEDLINE - Academic</collection><jtitle>Journal of clinical virology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Baumeister, Elsa G.</au><au>Hünicken, Diego S.</au><au>Savy, Vilma L.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>RSV molecular characterization and specific antibody response in young children with acute lower respiratory infection</atitle><jtitle>Journal of clinical virology</jtitle><addtitle>J Clin Virol</addtitle><date>2003-05-01</date><risdate>2003</risdate><volume>27</volume><issue>1</issue><spage>44</spage><epage>51</epage><pages>44-51</pages><issn>1386-6532</issn><eissn>1873-5967</eissn><notes>ObjectType-Article-2</notes><notes>SourceType-Scholarly Journals-1</notes><notes>ObjectType-Feature-1</notes><notes>content type line 23</notes><notes>ObjectType-Article-1</notes><notes>ObjectType-Feature-2</notes><abstract>The presence of respiratory syncytial virus (RSV) in nasopharyngeal aspirates (NPA) were studied in 254 hospitalized Argentinean children with acute lower respiratory infection tract (ALRI). The specific humoral immune response and partial sequences of the G protein gene were studied in a subset of 22 children with RSV confirmed infection. The RSV IgM detection and the RSV IgG titration were made by immunofluorescence assay (IFA) in pairs of sera. The partial RSV G gene sequences were obtained by an RT-PCR amplification directly from de NPAs. RSV was present in 44.5% of the children. The RSV IgM was detected in 22.7 and 68.8% of the first and second sera, respectively. The IgG geometric mean titers of the acute and convalescent sera were 8 and 589. The RSV IgG titration was able to define 86.4% of the RSV confirmed cases. The percentage of coincidence between RSV IgM detection in the second sera and diagnosis by RSV IgG titration was 72.7% and no significant differences were observed. The nucleotide sequence of one group A and three group B viruses were identified. The first one was related with circulating viruses in Madrid, Montevideo and Mozambique during 1992, 1989 and 1999, respectively. The three sequences identified as group B viruses were closely related with circulating viruses in 1998 from South Africa and Canada during 1999 and 2000. The data obtained in our study provide the first approach at the molecular level (nucleotide) of the RSV circulating strains in Argentina and the lack of genotype patterns previously determined make necessary a continuous molecular surveillance in order to contribute to the understanding of the behavior of this virus in our community.</abstract><cop>Netherlands</cop><pub>Elsevier B.V</pub><pmid>12727528</pmid><doi>10.1016/S1386-6532(02)00125-7</doi><tpages>8</tpages></addata></record> |
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| subjects | Acute Disease Acute lower respiratory infection in children Antibodies, Viral - blood Child G gene sequences Humans IgG IgM Immunoglobulin G - blood Immunoglobulin M - blood Phylogeny Respiratory syncytial virus Respiratory Syncytial Virus Infections - epidemiology Respiratory Syncytial Virus Infections - immunology Respiratory Syncytial Virus Infections - virology Respiratory Syncytial Viruses - classification Respiratory Syncytial Viruses - genetics Respiratory Syncytial Viruses - immunology Respiratory Tract Infections - epidemiology Respiratory Tract Infections - immunology Respiratory Tract Infections - virology Sequence Analysis, DNA Viral Proteins - genetics |
| title | RSV molecular characterization and specific antibody response in young children with acute lower respiratory infection |
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