Type

Journal Article

Authors

Michael D Welsh
Simon Doherty
Bryan Markey
Joseph P. Cassidy
Bernadette Earley
Fawad Mansoor

Subjects

Veterinary

Topics
immunity mucosal nanoparticle bovine respiratory disease dairy livestock immune response plga commercial novel the protective immunity vaccine

Comparing the immune response to a novel intranasal nanoparticle PLGA vaccine and a commercial BPI3V vaccine in dairy calves. (2015)

Abstract There is a need to improve vaccination against respiratory pathogens in calves by stimulation of local immunity at the site of pathogen entry at an early stage in life. Ideally such a vaccine preparation would not be inhibited by the maternally derived antibodies. Additionally, localized immune response at the site of infection is also crucial to control infection at the site of entry of virus. The present study investigated the response to an intranasal bovine parainfluenza 3 virus (BPI3V) antigen preparation encapsulated in PLGA (poly dl-lactic-co-glycolide) nanoparticles in the presence of pre-existing anti-BPI3V antibodies in young calves and comparing it to a commercially available BPI3V respiratory vaccine. There was a significant (P < 0.05) increase in BPI3V-specific IgA in the nasal mucus of the BPI3V nanoparticle vaccine group alone. Following administration of the nanoparticle vaccine an early immune response was induced that continued to grow until the end of study and was not observed in the other treatment groups. Virus specific serum IgG response to both the nanoparticle vaccine and commercial live attenuated vaccine showed a significant (P < 0.05) rise over the period of study. However, the cell mediated immune response observed didn't show any significant rise in any of the treatment groups. Calves administered the intranasal nanoparticle vaccine induced significantly greater mucosal IgA responses, compared to the other treatment groups. This suggests an enhanced, sustained mucosal-based immunological response to the BPI3V nanoparticle vaccine in the face of pre-existing antibodies to BPI3V, which are encouraging and potentially useful characteristics of a candidate vaccine. However, ability of nanoparticle vaccine in eliciting cell mediated immune response needs further investigation. More sustained local mucosal immunity induced by nanoparticle vaccine has obvious potential if it translates into enhanced protective immunity in the face of virus outbreak.
Collections Ireland -> Teagasc -> PubMed
Ireland -> Teagasc -> Teagasc publications in Biomed Central
Ireland -> Teagasc -> Other Teagasc Research
Ireland -> Teagasc -> Other Teagasc Research
Ireland -> Teagasc -> Animal & Bioscience
Ireland -> Teagasc -> Teagasc publications in Biomed Central
Ireland -> Teagasc -> Animal & Bioscience
Ireland -> Teagasc -> Animal & Grassland Research & Innovation Programme
Ireland -> Teagasc -> Animal & Grassland Research & Innovation Programme

Full list of authors on original publication

Michael D Welsh, Simon Doherty, Bryan Markey, Joseph P. Cassidy, Bernadette Earley, Fawad Mansoor

Experts in our system

1
Michael D Welsh
Teagasc
Total Publications: 11
 
2
B K Markey
University College Dublin
Total Publications: 43
 
3
Joseph P. Cassidy
University College Dublin
Total Publications: 55
 
4
Bernadette Earley
Teagasc
Total Publications: 120