Induction of protection against Brugia malayi infection in jirds by microfilarial antigens.
Identifieur interne : 00EA01 ( Main/Exploration ); précédent : 00EA00; suivant : 00EA02Induction of protection against Brugia malayi infection in jirds by microfilarial antigens.
Auteurs : J W Kazura ; H. Cicirello ; J W MccallSource :
- Journal of immunology (Baltimore, Md. : 1950) [ 0022-1767 ] ; 1986.
Descripteurs français
- KwdFr :
- Animaux, Antigènes d'helminthe (administration et posologie), Antigènes d'helminthe (analyse), Antigènes d'helminthe (immunologie), Brugia (immunologie), Femelle, Filariose lymphatique (immunologie), Filariose lymphatique (parasitologie), Gerbillinae, Immunisation passive, Lymphoedème (immunologie), Maladie chronique, Microfilaria (immunologie), Mâle, Production d'anticorps.
- MESH :
- administration et posologie : Antigènes d'helminthe.
- analyse : Antigènes d'helminthe.
- immunologie : Antigènes d'helminthe, Brugia, Filariose lymphatique, Lymphoedème, Microfilaria.
- parasitologie : Filariose lymphatique.
- Animaux, Femelle, Gerbillinae, Immunisation passive, Maladie chronique, Mâle, Production d'anticorps.
English descriptors
- KwdEn :
- Animals, Antibody Formation, Antigens, Helminth (administration & dosage), Antigens, Helminth (analysis), Antigens, Helminth (immunology), Brugia (immunology), Chronic Disease, Elephantiasis, Filarial (immunology), Elephantiasis, Filarial (parasitology), Female, Gerbillinae, Immunization, Passive, Lymphedema (immunology), Male, Microfilariae (immunology).
- MESH :
- chemical , administration & dosage : Antigens, Helminth.
- chemical , analysis : Antigens, Helminth.
- chemical , immunology : Antigens, Helminth.
- immunology : Brugia, Elephantiasis, Filarial, Lymphedema, Microfilariae.
- parasitology : Elephantiasis, Filarial.
- Animals, Antibody Formation, Chronic Disease, Female, Gerbillinae, Immunization, Passive, Male.
Abstract
The development of immunologic methods to reduce transmission of human lymphatic filariasis depends on measures that will enhance the host's ability to eliminate infective larvae, adult worms, or blood-borne microfilariae (mf). The present study was designed to assess the capacity of a crude extract of Brugia malayi mf to decrease the level of microfilaremia and adult worm burden in jirds inoculated with infective larvae, and to identify the filarial antigens that elicit antibody responses in these animals. Thirty weeks after subcutaneous inoculation with 75 infective larvae, 100% of control jirds were patent (i.e., had microfilaremia) compared with 60% of the group immunized with 10 micrograms of crude microfilarial extract (p less than 0.05). In addition, microfilaremia was lower in patent immunized animals compared with controls (p less than 0.05). The mean total number of adult female B. malayi per jird recovered at necropsy in control animals was 16.0 vs 7.0 in immunized jirds (p less than 0.05). Serum of immunized jirds contained anti-mf antibodies with an end titer of 1:8000, a value similar to that of animals with chronic B. malayi infection. Microfilarial antigens of Mr approximately 150,000, 75,000, 42,000, and 25,000 were identified in immunoblotting studies by reactivity with antibodies in sera of immunized jirds. Antibodies induced by immunization with microfilarial extract were not specific for this stage of the parasite life cycle, as jird anti-mf antibodies reacted with a Mr approximately 150,000 and several Mr 50,000 to 110,000 antigens derived from immature and mature adult parasites of both sexes. These data indicate that immunization of jirds with a water soluble microfilarial extract enhances the host's ability to eliminate adult worms and blood-borne mf. The filarial antigens that induce antibodies in immunized jirds have been identified.
PubMed: 3944460
Affiliations:
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Le document en format XML
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<term>Antigens, Helminth (immunology)</term>
<term>Brugia (immunology)</term>
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<term>Elephantiasis, Filarial (immunology)</term>
<term>Elephantiasis, Filarial (parasitology)</term>
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<term>Gerbillinae</term>
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<term>Male</term>
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<term>Antigènes d'helminthe (analyse)</term>
<term>Antigènes d'helminthe (immunologie)</term>
<term>Brugia (immunologie)</term>
<term>Femelle</term>
<term>Filariose lymphatique (immunologie)</term>
<term>Filariose lymphatique (parasitologie)</term>
<term>Gerbillinae</term>
<term>Immunisation passive</term>
<term>Lymphoedème (immunologie)</term>
<term>Maladie chronique</term>
<term>Microfilaria (immunologie)</term>
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<term>Production d'anticorps</term>
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<term>Lymphoedème</term>
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<front><div type="abstract" xml:lang="en">The development of immunologic methods to reduce transmission of human lymphatic filariasis depends on measures that will enhance the host's ability to eliminate infective larvae, adult worms, or blood-borne microfilariae (mf). The present study was designed to assess the capacity of a crude extract of Brugia malayi mf to decrease the level of microfilaremia and adult worm burden in jirds inoculated with infective larvae, and to identify the filarial antigens that elicit antibody responses in these animals. Thirty weeks after subcutaneous inoculation with 75 infective larvae, 100% of control jirds were patent (i.e., had microfilaremia) compared with 60% of the group immunized with 10 micrograms of crude microfilarial extract (p less than 0.05). In addition, microfilaremia was lower in patent immunized animals compared with controls (p less than 0.05). The mean total number of adult female B. malayi per jird recovered at necropsy in control animals was 16.0 vs 7.0 in immunized jirds (p less than 0.05). Serum of immunized jirds contained anti-mf antibodies with an end titer of 1:8000, a value similar to that of animals with chronic B. malayi infection. Microfilarial antigens of Mr approximately 150,000, 75,000, 42,000, and 25,000 were identified in immunoblotting studies by reactivity with antibodies in sera of immunized jirds. Antibodies induced by immunization with microfilarial extract were not specific for this stage of the parasite life cycle, as jird anti-mf antibodies reacted with a Mr approximately 150,000 and several Mr 50,000 to 110,000 antigens derived from immature and mature adult parasites of both sexes. These data indicate that immunization of jirds with a water soluble microfilarial extract enhances the host's ability to eliminate adult worms and blood-borne mf. The filarial antigens that induce antibodies in immunized jirds have been identified.</div>
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<name sortKey="Kazura, J W" sort="Kazura, J W" uniqKey="Kazura J" first="J W" last="Kazura">J W Kazura</name>
<name sortKey="Mccall, J W" sort="Mccall, J W" uniqKey="Mccall J" first="J W" last="Mccall">J W Mccall</name>
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