Cited by 12Parasitic Diseases Research and TreatmentHelminth infection and controlParasites and Host Interactions

IgG response against infective larvae of Dirofilaria immitis in experimentally infected cats

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Prieto, Guadalupe, McCall, John W., Venco, Luigi, Genchi, Marco, Sim�n, Fernando, Genchi, Claudio·2001·Veterinary Research

Abstract

Somatic antigens from third stage larvae of Dirofilaria immitis (SL3) were used to detect IgG response against heartworm infection in 8 experimentally infected cats.A moderate specific anti-SL3 IgG response was found one month post-infection.Afterwards, antibodies decreased reaching a basal level 4 months post-infection and remained at this level until the end of the study, 6 months post-infection.Western blot analysis showed specific recognition of polypeptides of 79, 73, 60, 52, 40 and 39 kDa by sera from infected cats 1 month post-infection, but not by sera taken prior to the infection.The low antigenicity of the SL3 antigen in the cat should allow the parasite to escape the host's immune response. cat / heartworm infection / L3 antigens / IgG responseRésumé -Réponse en IgG contre les larves infectieuses de Dirofilaria immitis chez des chats expérimentalement infectés.Des antigènes somatiques provenant de larves du troisième stade de Dirofilaria immitis (SL3) ont été utilisés afin de détecter une réponse en IgG contre une infection à Dirofilaria immitis chez huit chats expérimentalement infectés.Une réponse modérée des IgG spécifiques anti-L3 a été détectée un mois après infection.Ensuite, les anticorps ont diminué jusqu'à atteindre un niveau de base 4 mois après infection, et sont restés à ce niveau jusqu'à la fin de l'étude, 6 mois après infection.Une analyse en Western blot a montré une reconnaissance spécifique de polypeptides de 79, 73, 60, 52, 40 et 39 kDa par les sérums de chats infectés, un mois après infection, mais pas par des sérums prélevés un mois avant infection.La faible antigénicité de l'antigène SL3 chez le chat devrait permettre au parasite d'échapper à la réponse immunitaire de son hôte. chat / infection à Dirofilaria immitis / antigène L3 / réponse IgGVet. Res.

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  • The low antigenic profile of L3/L4 larvae is consistent with low intensity and short duration of antibody responses to L3 antigens in dogs.

    “This observation is consistent with the low intensity and short duration of antibody responses to L3 antigens in dogs (347).”

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Research works printed but not linked: 2

  1. Genchi C., Kramer L., Venco L., Prieto G., Simon F., Comparison of antibody and antigen testing with echocardiography for the detection of heart- worm (Dirofilaria immitis) in cats, in: Seward R.L., Knight D.H. (Eds.), Recent advances in Heartworm Disease: Symposium '98, Batavia, IL, American Heartworm Society, 1998, pp. 173- 177.
  2. Robertson-Plouch C.K., Dillon A.R., Brawner W.R., Guerrero J., Prevalence of feline heart- worm infection among cats with respiratory and gastrointestinal signs: results of a multicenter study, in: Seward R.L., Knight D.H. (Eds.), Recent advances in Heartworm Disease: Sym- posium '98, Batavia, IL, American Heartworm Society, 1998, pp. 161-166.

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Authors
Prieto, G., McCall, J. W., Venco, L., Genchi, M., Sim�n, F., & Genchi, C.
Affiliations
  • Universidad de Salamanca (ES)
  • University of Georgia (US)
  • University of Milan (IT)
Venue
Veterinary Research
Publisher
EDP Sciences
Published
2001-01
Volume
32
Issue
1
Pages
93-96
ISSN
  • 0928-4249 (ISSN-L)
  • 1297-9716
OpenAlex
W2054822771
Cited by
12
References
3
Citations by year
2025: 1 · 2022: 1 · 2021: 1 · 2017: 1 · 2012: 2
FWCI
0.50
Type
journal article
Language
en
Open access
Locations
  • Veterinary Research (publishedVersion)
  • PubMed (publishedVersion)
  • Springer Link (Chiba Institute of Technology) (submittedVersion)
  • HAL (submittedVersion, other-oa)
Topics
  • Health Sciences › Medicine › Infectious Diseases › Parasitic Diseases Research and Treatment
  • Health Sciences › Veterinary › Small Animals › Helminth infection and control
  • Life Sciences › Immunology and Microbiology › Parasitology › Parasites and Host Interactions
Keywords
Dirofilaria immitis, heartworm infection, cats, third-stage larvae, somatic antigens, IgG antibody response, antibody kinetics, immune evasion, experimental infection
MeSH terms
Animals, Cat Diseases, Cats, Dirofilaria immitis, Dirofilariasis, Immunoglobulin G, Time Factors, Blotting, Western

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