Antigenemia is associated with low antibody response to carbohydrate determinants of a filarial surface antigen.
Identifieur interne : 000D71 ( Ncbi/Merge ); précédent : 000D70; suivant : 000D72Antigenemia is associated with low antibody response to carbohydrate determinants of a filarial surface antigen.
Auteurs : M S Bal [Inde] ; M K Beuria ; N N Mandal ; M K DasSource :
- Parasite immunology [ 0141-9838 ] ; 2003.
Descripteurs français
- KwdFr :
- Adolescent, Adulte d'âge moyen, Animaux, Anticorps antihelminthe (immunologie), Anticorps antihelminthe (sang), Antigènes d'helminthe (), Antigènes d'helminthe (analyse), Antigènes de surface (), Antigènes de surface (immunologie), Filariose lymphatique (diagnostic), Filarioses (immunologie), Glucides (analyse), Glucides (immunologie), Humains, Hydrocèle (diagnostic), Immunoglobuline G (sang), Maladies endémiques, Mâle, Production d'anticorps, Wuchereria bancrofti (immunologie), Épitopes ().
- MESH :
- analyse : Antigènes d'helminthe, Glucides.
- diagnostic : Filariose lymphatique, Hydrocèle.
- immunologie : Anticorps antihelminthe, Antigènes de surface, Filarioses, Glucides, Wuchereria bancrofti.
- sang : Anticorps antihelminthe, Immunoglobuline G.
- Adolescent, Adulte d'âge moyen, Animaux, Antigènes d'helminthe, Antigènes de surface, Humains, Maladies endémiques, Mâle, Production d'anticorps, Épitopes.
English descriptors
- KwdEn :
- Adolescent, Animals, Antibodies, Helminth (blood), Antibodies, Helminth (immunology), Antibody Formation, Antigens, Helminth (analysis), Antigens, Helminth (chemistry), Antigens, Surface (chemistry), Antigens, Surface (immunology), Carbohydrates (analysis), Carbohydrates (immunology), Elephantiasis, Filarial (diagnosis), Endemic Diseases, Epitopes (chemistry), Filariasis (immunology), Humans, Immunoglobulin G (blood), Male, Middle Aged, Testicular Hydrocele (diagnosis), Wuchereria bancrofti (immunology).
- MESH :
- chemical , analysis : Antigens, Helminth, Carbohydrates.
- chemical , blood : Antibodies, Helminth, Immunoglobulin G.
- chemical , chemistry : Antigens, Helminth, Antigens, Surface, Epitopes.
- chemical , immunology : Antibodies, Helminth, Antigens, Surface, Carbohydrates.
- diagnosis : Elephantiasis, Filarial, Testicular Hydrocele.
- immunology : Filariasis, Wuchereria bancrofti.
- Adolescent, Animals, Antibody Formation, Endemic Diseases, Humans, Male, Middle Aged.
Abstract
The IgG response to a filarial surface antigen (DssdI) was evaluated in circulating antigen (Og4C3 test) positive and negative individuals from the Wuchereria bancrofti endemic region of Orissa, India. Circulating filarial antigen (CFA) positive individuals exhibited depressed antibody levels to DssdI and individuals with high antibody levels were invariably CFA negative. Low IgG levels to DssdI are associated with CFA positivity irrespective of microfilaraemia and clinical status. Thus asymptomatic microfilaraemic individuals with antigen positivity exhibited low IgG levels similar to symptomatic (chronic filariasis with elephantiasis, hydrocele) or asymptomatic amicrofilaraemic individuals with antigenemia. Western blot analysis revealed a band of approximately 210 kDa reactive with CFA-negative, but not with CFA-positive sera. DssdI was subjected to mild periodate oxidation to investigate the role of carbohydrate epitopes. The treatment considerably reduced the antigenic recognition of DssdI, stressing the immunodominance of carbohydrate residues of DssdI in infection-free individuals. In contrast, individuals with active infection failed to produce such antibodies to filarial surface carbohydrates.
PubMed: 12791107
Links toward previous steps (curation, corpus...)
- to stream PubMed, to step Corpus: 004249
- to stream PubMed, to step Curation: 004249
- to stream PubMed, to step Checkpoint: 004249
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pubmed:12791107Le document en format XML
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<affiliation wicri:level="1"><nlm:affiliation>Immunology Division, Regional Medical Research Centre (ICMR), Chandrasekharapur, Bhubaneswar - 751023, Orissa, India.</nlm:affiliation>
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<term>Antibody Formation</term>
<term>Antigens, Helminth (analysis)</term>
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<term>Antigens, Surface (chemistry)</term>
<term>Antigens, Surface (immunology)</term>
<term>Carbohydrates (analysis)</term>
<term>Carbohydrates (immunology)</term>
<term>Elephantiasis, Filarial (diagnosis)</term>
<term>Endemic Diseases</term>
<term>Epitopes (chemistry)</term>
<term>Filariasis (immunology)</term>
<term>Humans</term>
<term>Immunoglobulin G (blood)</term>
<term>Male</term>
<term>Middle Aged</term>
<term>Testicular Hydrocele (diagnosis)</term>
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<term>Adulte d'âge moyen</term>
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<term>Anticorps antihelminthe (sang)</term>
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<term>Filariose lymphatique (diagnostic)</term>
<term>Filarioses (immunologie)</term>
<term>Glucides (analyse)</term>
<term>Glucides (immunologie)</term>
<term>Humains</term>
<term>Hydrocèle (diagnostic)</term>
<term>Immunoglobuline G (sang)</term>
<term>Maladies endémiques</term>
<term>Mâle</term>
<term>Production d'anticorps</term>
<term>Wuchereria bancrofti (immunologie)</term>
<term>Épitopes ()</term>
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<keywords scheme="MESH" type="chemical" qualifier="analysis" xml:lang="en"><term>Antigens, Helminth</term>
<term>Carbohydrates</term>
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<keywords scheme="MESH" type="chemical" qualifier="blood" xml:lang="en"><term>Antibodies, Helminth</term>
<term>Immunoglobulin G</term>
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<term>Antigens, Surface</term>
<term>Epitopes</term>
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<term>Antigens, Surface</term>
<term>Carbohydrates</term>
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<keywords scheme="MESH" qualifier="analyse" xml:lang="fr"><term>Antigènes d'helminthe</term>
<term>Glucides</term>
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<keywords scheme="MESH" qualifier="diagnosis" xml:lang="en"><term>Elephantiasis, Filarial</term>
<term>Testicular Hydrocele</term>
</keywords>
<keywords scheme="MESH" qualifier="diagnostic" xml:lang="fr"><term>Filariose lymphatique</term>
<term>Hydrocèle</term>
</keywords>
<keywords scheme="MESH" qualifier="immunologie" xml:lang="fr"><term>Anticorps antihelminthe</term>
<term>Antigènes de surface</term>
<term>Filarioses</term>
<term>Glucides</term>
<term>Wuchereria bancrofti</term>
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<term>Immunoglobuline G</term>
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<term>Antibody Formation</term>
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<term>Male</term>
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<term>Adulte d'âge moyen</term>
<term>Animaux</term>
<term>Antigènes d'helminthe</term>
<term>Antigènes de surface</term>
<term>Humains</term>
<term>Maladies endémiques</term>
<term>Mâle</term>
<term>Production d'anticorps</term>
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<front><div type="abstract" xml:lang="en">The IgG response to a filarial surface antigen (DssdI) was evaluated in circulating antigen (Og4C3 test) positive and negative individuals from the Wuchereria bancrofti endemic region of Orissa, India. Circulating filarial antigen (CFA) positive individuals exhibited depressed antibody levels to DssdI and individuals with high antibody levels were invariably CFA negative. Low IgG levels to DssdI are associated with CFA positivity irrespective of microfilaraemia and clinical status. Thus asymptomatic microfilaraemic individuals with antigen positivity exhibited low IgG levels similar to symptomatic (chronic filariasis with elephantiasis, hydrocele) or asymptomatic amicrofilaraemic individuals with antigenemia. Western blot analysis revealed a band of approximately 210 kDa reactive with CFA-negative, but not with CFA-positive sera. DssdI was subjected to mild periodate oxidation to investigate the role of carbohydrate epitopes. The treatment considerably reduced the antigenic recognition of DssdI, stressing the immunodominance of carbohydrate residues of DssdI in infection-free individuals. In contrast, individuals with active infection failed to produce such antibodies to filarial surface carbohydrates.</div>
</front>
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<Abstract><AbstractText>The IgG response to a filarial surface antigen (DssdI) was evaluated in circulating antigen (Og4C3 test) positive and negative individuals from the Wuchereria bancrofti endemic region of Orissa, India. Circulating filarial antigen (CFA) positive individuals exhibited depressed antibody levels to DssdI and individuals with high antibody levels were invariably CFA negative. Low IgG levels to DssdI are associated with CFA positivity irrespective of microfilaraemia and clinical status. Thus asymptomatic microfilaraemic individuals with antigen positivity exhibited low IgG levels similar to symptomatic (chronic filariasis with elephantiasis, hydrocele) or asymptomatic amicrofilaraemic individuals with antigenemia. Western blot analysis revealed a band of approximately 210 kDa reactive with CFA-negative, but not with CFA-positive sera. DssdI was subjected to mild periodate oxidation to investigate the role of carbohydrate epitopes. The treatment considerably reduced the antigenic recognition of DssdI, stressing the immunodominance of carbohydrate residues of DssdI in infection-free individuals. In contrast, individuals with active infection failed to produce such antibodies to filarial surface carbohydrates.</AbstractText>
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