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Cell-mediated immune responses in children towards secreted proteins of Mycobacterium bovis BCG
Background: There is a need to develop an improved anti-TB vaccine for adequate control and elimination of tuberculosis, to control the spread of MDR-TB and TB/HIV co-infection. Studies in children have indicated that BCG vaccination has certain beneficial effects, especially against miliary TB and...
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| Published in: | Tuberculosis (Edinburgh, Scotland) Scotland), 2005-01, Vol.85 (1), p.89-93 |
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| cites | cdi_FETCH-LOGICAL-c385t-348cb4cfd2574932f9fe7aecc13629cc76da640043877cf322cf76049df200753 |
| container_end_page | 93 |
| container_issue | 1 |
| container_start_page | 89 |
| container_title | Tuberculosis (Edinburgh, Scotland) |
| container_volume | 85 |
| creator | Surekha Rani, H. Vijaya Lakshmi, V. Sumanlatha, G. Murthy, K.J.R. |
| description | Background: There is a need to develop an improved anti-TB vaccine for adequate control and elimination of tuberculosis, to control the spread of MDR-TB and TB/HIV co-infection. Studies in children have indicated that BCG vaccination has certain beneficial effects, especially against miliary TB and TB meningitis, but needs to be improved for protection against pulmonary tuberculosis.
Objective: The aim of the present study was to identify the immunogenic proteins in the culture filtrate (CF) of
Mycobacterium bovis BCG by studying the effector mechanism of protection in children, which may help in the formulation of an effective vaccine against tuberculosis.
Materials and methods: Lymphoproliferative responses (LTT) and the levels of IL-2 and IFN-
γ
(Th1 cytokines) released into the culture supernatants were estimated (by ELISA) in short-term cultures of PBMC of BCG vaccinated (
n=25) and unvaccinated (
n=15) children and children with tuberculosis (
n=15) against 10 different fractions of CF (mol.wt ⩾ 90– |
| doi_str_mv | 10.1016/j.tube.2004.09.010 |
| format | article |
| fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_miscellaneous_67397019</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><els_id>S1472979204000836</els_id><sourcerecordid>17629299</sourcerecordid><originalsourceid>FETCH-LOGICAL-c385t-348cb4cfd2574932f9fe7aecc13629cc76da640043877cf322cf76049df200753</originalsourceid><addsrcrecordid>eNqFkU1LxDAURYMofv8BF5KVu9Z8dJoG3Oigo6C4UXAX2tcXzDBtxqRV_PemzIA7XSWLc2_yziPkjLOcM15eLvNhbDAXjBU50znjbIcc8krJTFT8bTfdCyUyrbQ4IEcxLlkKsYrtkwM-KyvFpDgkZo6rVdZh6-oBW-q6buyRBoxr30eM1PUU3t2qDdjTwX_VoY00IgSc6HXwA7o-Um_p0zf4poYBgxs72vhPF-nNfHFC9my9ini6PY_J693ty_w-e3xePMyvHzOQ1WzIZFFBU4BtxUwVWgqrLaoaAbgshQZQZVuXRRpUVkqBlUKAVSUrdGvT-Gomj8nFpjf96WPEOJjORUiz1T36MZpSSa0Y1_-CXKUHhZ5AsQEh-BgDWrMOrqvDt-HMTP7N0kz-zeTfMG2S_xQ637aPTZL6G9kKT8DVBsAk49NhMBEc9pAWEBAG03r3V_8PyDiXUw</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>17629299</pqid></control><display><type>article</type><title>Cell-mediated immune responses in children towards secreted proteins of Mycobacterium bovis BCG</title><source>ScienceDirect Freedom Collection</source><creator>Surekha Rani, H. ; Vijaya Lakshmi, V. ; Sumanlatha, G. ; Murthy, K.J.R.</creator><creatorcontrib>Surekha Rani, H. ; Vijaya Lakshmi, V. ; Sumanlatha, G. ; Murthy, K.J.R.</creatorcontrib><description>Background: There is a need to develop an improved anti-TB vaccine for adequate control and elimination of tuberculosis, to control the spread of MDR-TB and TB/HIV co-infection. Studies in children have indicated that BCG vaccination has certain beneficial effects, especially against miliary TB and TB meningitis, but needs to be improved for protection against pulmonary tuberculosis.
Objective: The aim of the present study was to identify the immunogenic proteins in the culture filtrate (CF) of
Mycobacterium bovis BCG by studying the effector mechanism of protection in children, which may help in the formulation of an effective vaccine against tuberculosis.
Materials and methods: Lymphoproliferative responses (LTT) and the levels of IL-2 and IFN-
γ
(Th1 cytokines) released into the culture supernatants were estimated (by ELISA) in short-term cultures of PBMC of BCG vaccinated (
n=25) and unvaccinated (
n=15) children and children with tuberculosis (
n=15) against 10 different fractions of CF (mol.wt ⩾ 90–<14
kDa).
Results: The mean stimulation indices (SI) in LTT against all the (10) fractions in vaccinated children were high when compared to the unvaccinated and diseased groups; however, of the 10 fractions, F3, F4, F6, F8 and F9 elicited significantly higher SIs than the other fractions (
p<0.05). In the vaccinated children, the SI (5.58±1.57), levels of IL-2 (381.66±16.40
pg/ml) and IFN-
γ
(732±62.36
pg/ml) in the cultures stimulated by fraction 8 (34–30
kDa) were significantly higher (
p<0.001), than responses to the other fractions and also to those of other groups of children.
Conclusion: Thus, the peptides within the cluster 34–30
kDa appear to be promising vaccine candidates by virtue of their immunodominant nature specifically priming Th1 cells in normal, BCG-vaccinated children.</description><identifier>ISSN: 1472-9792</identifier><identifier>EISSN: 1873-281X</identifier><identifier>DOI: 10.1016/j.tube.2004.09.010</identifier><identifier>PMID: 15687032</identifier><language>eng</language><publisher>Scotland: Elsevier Ltd</publisher><subject>32 KD ; Bacterial Proteins - immunology ; BCG ; BCG Vaccine - immunology ; Child ; Child, Preschool ; Children ; Culture Media ; Humans ; Immune responses ; Immunity, Cellular - immunology ; Interferon-gamma - analysis ; Interleukin-2 - analysis ; Lymphocyte Activation - immunology ; Mycobacterium bovis - immunology ; Th1 Cells - immunology ; Tuberculosis - immunology ; Vaccination - methods ; Vaccine</subject><ispartof>Tuberculosis (Edinburgh, Scotland), 2005-01, Vol.85 (1), p.89-93</ispartof><rights>2004</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c385t-348cb4cfd2574932f9fe7aecc13629cc76da640043877cf322cf76049df200753</citedby><cites>FETCH-LOGICAL-c385t-348cb4cfd2574932f9fe7aecc13629cc76da640043877cf322cf76049df200753</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/15687032$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Surekha Rani, H.</creatorcontrib><creatorcontrib>Vijaya Lakshmi, V.</creatorcontrib><creatorcontrib>Sumanlatha, G.</creatorcontrib><creatorcontrib>Murthy, K.J.R.</creatorcontrib><title>Cell-mediated immune responses in children towards secreted proteins of Mycobacterium bovis BCG</title><title>Tuberculosis (Edinburgh, Scotland)</title><addtitle>Tuberculosis (Edinb)</addtitle><description>Background: There is a need to develop an improved anti-TB vaccine for adequate control and elimination of tuberculosis, to control the spread of MDR-TB and TB/HIV co-infection. Studies in children have indicated that BCG vaccination has certain beneficial effects, especially against miliary TB and TB meningitis, but needs to be improved for protection against pulmonary tuberculosis.
Objective: The aim of the present study was to identify the immunogenic proteins in the culture filtrate (CF) of
Mycobacterium bovis BCG by studying the effector mechanism of protection in children, which may help in the formulation of an effective vaccine against tuberculosis.
Materials and methods: Lymphoproliferative responses (LTT) and the levels of IL-2 and IFN-
γ
(Th1 cytokines) released into the culture supernatants were estimated (by ELISA) in short-term cultures of PBMC of BCG vaccinated (
n=25) and unvaccinated (
n=15) children and children with tuberculosis (
n=15) against 10 different fractions of CF (mol.wt ⩾ 90–<14
kDa).
Results: The mean stimulation indices (SI) in LTT against all the (10) fractions in vaccinated children were high when compared to the unvaccinated and diseased groups; however, of the 10 fractions, F3, F4, F6, F8 and F9 elicited significantly higher SIs than the other fractions (
p<0.05). In the vaccinated children, the SI (5.58±1.57), levels of IL-2 (381.66±16.40
pg/ml) and IFN-
γ
(732±62.36
pg/ml) in the cultures stimulated by fraction 8 (34–30
kDa) were significantly higher (
p<0.001), than responses to the other fractions and also to those of other groups of children.
Conclusion: Thus, the peptides within the cluster 34–30
kDa appear to be promising vaccine candidates by virtue of their immunodominant nature specifically priming Th1 cells in normal, BCG-vaccinated children.</description><subject>32 KD</subject><subject>Bacterial Proteins - immunology</subject><subject>BCG</subject><subject>BCG Vaccine - immunology</subject><subject>Child</subject><subject>Child, Preschool</subject><subject>Children</subject><subject>Culture Media</subject><subject>Humans</subject><subject>Immune responses</subject><subject>Immunity, Cellular - immunology</subject><subject>Interferon-gamma - analysis</subject><subject>Interleukin-2 - analysis</subject><subject>Lymphocyte Activation - immunology</subject><subject>Mycobacterium bovis - immunology</subject><subject>Th1 Cells - immunology</subject><subject>Tuberculosis - immunology</subject><subject>Vaccination - methods</subject><subject>Vaccine</subject><issn>1472-9792</issn><issn>1873-281X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2005</creationdate><recordtype>article</recordtype><recordid>eNqFkU1LxDAURYMofv8BF5KVu9Z8dJoG3Oigo6C4UXAX2tcXzDBtxqRV_PemzIA7XSWLc2_yziPkjLOcM15eLvNhbDAXjBU50znjbIcc8krJTFT8bTfdCyUyrbQ4IEcxLlkKsYrtkwM-KyvFpDgkZo6rVdZh6-oBW-q6buyRBoxr30eM1PUU3t2qDdjTwX_VoY00IgSc6HXwA7o-Um_p0zf4poYBgxs72vhPF-nNfHFC9my9ini6PY_J693ty_w-e3xePMyvHzOQ1WzIZFFBU4BtxUwVWgqrLaoaAbgshQZQZVuXRRpUVkqBlUKAVSUrdGvT-Gomj8nFpjf96WPEOJjORUiz1T36MZpSSa0Y1_-CXKUHhZ5AsQEh-BgDWrMOrqvDt-HMTP7N0kz-zeTfMG2S_xQ637aPTZL6G9kKT8DVBsAk49NhMBEc9pAWEBAG03r3V_8PyDiXUw</recordid><startdate>20050101</startdate><enddate>20050101</enddate><creator>Surekha Rani, H.</creator><creator>Vijaya Lakshmi, V.</creator><creator>Sumanlatha, G.</creator><creator>Murthy, K.J.R.</creator><general>Elsevier Ltd</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>7QL</scope><scope>C1K</scope><scope>7X8</scope></search><sort><creationdate>20050101</creationdate><title>Cell-mediated immune responses in children towards secreted proteins of Mycobacterium bovis BCG</title><author>Surekha Rani, H. ; Vijaya Lakshmi, V. ; Sumanlatha, G. ; Murthy, K.J.R.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c385t-348cb4cfd2574932f9fe7aecc13629cc76da640043877cf322cf76049df200753</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2005</creationdate><topic>32 KD</topic><topic>Bacterial Proteins - immunology</topic><topic>BCG</topic><topic>BCG Vaccine - immunology</topic><topic>Child</topic><topic>Child, Preschool</topic><topic>Children</topic><topic>Culture Media</topic><topic>Humans</topic><topic>Immune responses</topic><topic>Immunity, Cellular - immunology</topic><topic>Interferon-gamma - analysis</topic><topic>Interleukin-2 - analysis</topic><topic>Lymphocyte Activation - immunology</topic><topic>Mycobacterium bovis - immunology</topic><topic>Th1 Cells - immunology</topic><topic>Tuberculosis - immunology</topic><topic>Vaccination - methods</topic><topic>Vaccine</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Surekha Rani, H.</creatorcontrib><creatorcontrib>Vijaya Lakshmi, V.</creatorcontrib><creatorcontrib>Sumanlatha, G.</creatorcontrib><creatorcontrib>Murthy, K.J.R.</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Bacteriology Abstracts (Microbiology B)</collection><collection>Environmental Sciences and Pollution Management</collection><collection>MEDLINE - Academic</collection><jtitle>Tuberculosis (Edinburgh, Scotland)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Surekha Rani, H.</au><au>Vijaya Lakshmi, V.</au><au>Sumanlatha, G.</au><au>Murthy, K.J.R.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Cell-mediated immune responses in children towards secreted proteins of Mycobacterium bovis BCG</atitle><jtitle>Tuberculosis (Edinburgh, Scotland)</jtitle><addtitle>Tuberculosis (Edinb)</addtitle><date>2005-01-01</date><risdate>2005</risdate><volume>85</volume><issue>1</issue><spage>89</spage><epage>93</epage><pages>89-93</pages><issn>1472-9792</issn><eissn>1873-281X</eissn><abstract>Background: There is a need to develop an improved anti-TB vaccine for adequate control and elimination of tuberculosis, to control the spread of MDR-TB and TB/HIV co-infection. Studies in children have indicated that BCG vaccination has certain beneficial effects, especially against miliary TB and TB meningitis, but needs to be improved for protection against pulmonary tuberculosis.
Objective: The aim of the present study was to identify the immunogenic proteins in the culture filtrate (CF) of
Mycobacterium bovis BCG by studying the effector mechanism of protection in children, which may help in the formulation of an effective vaccine against tuberculosis.
Materials and methods: Lymphoproliferative responses (LTT) and the levels of IL-2 and IFN-
γ
(Th1 cytokines) released into the culture supernatants were estimated (by ELISA) in short-term cultures of PBMC of BCG vaccinated (
n=25) and unvaccinated (
n=15) children and children with tuberculosis (
n=15) against 10 different fractions of CF (mol.wt ⩾ 90–<14
kDa).
Results: The mean stimulation indices (SI) in LTT against all the (10) fractions in vaccinated children were high when compared to the unvaccinated and diseased groups; however, of the 10 fractions, F3, F4, F6, F8 and F9 elicited significantly higher SIs than the other fractions (
p<0.05). In the vaccinated children, the SI (5.58±1.57), levels of IL-2 (381.66±16.40
pg/ml) and IFN-
γ
(732±62.36
pg/ml) in the cultures stimulated by fraction 8 (34–30
kDa) were significantly higher (
p<0.001), than responses to the other fractions and also to those of other groups of children.
Conclusion: Thus, the peptides within the cluster 34–30
kDa appear to be promising vaccine candidates by virtue of their immunodominant nature specifically priming Th1 cells in normal, BCG-vaccinated children.</abstract><cop>Scotland</cop><pub>Elsevier Ltd</pub><pmid>15687032</pmid><doi>10.1016/j.tube.2004.09.010</doi><tpages>5</tpages></addata></record> |
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| subjects | 32 KD Bacterial Proteins - immunology BCG BCG Vaccine - immunology Child Child, Preschool Children Culture Media Humans Immune responses Immunity, Cellular - immunology Interferon-gamma - analysis Interleukin-2 - analysis Lymphocyte Activation - immunology Mycobacterium bovis - immunology Th1 Cells - immunology Tuberculosis - immunology Vaccination - methods Vaccine |
| title | Cell-mediated immune responses in children towards secreted proteins of Mycobacterium bovis BCG |
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