immune efficacy of omph and ompa dna vaccines against avian pasteurella multocida

Authors

q. gong

c.l. qin

m.f. niu

m. cheng

x. f. sun

abstract

avian pasteurella multocida is an agent of fowl cholera. the protective effect achieved through orthodoxvaccines is not ideal. the research on novel vaccines against avian pasteurella multocida is imperative. inthis study, the genes encoding outer membrane protein h and a (omph and ompa) were cloned into theeukaryotic expression vector pcdna3.1(+) and the recombinant plasmids, namely dna vaccines (pomph andpompa) were obtained. five groups of chickens (n=20 per group) were intramuscularly injected with thetwo recombinant plasmids, attenuated live vaccine, control vector pcdna3.1(+) and pbs, respectively. theimmune responses and protective efficacy were evaluated after immunization by serological and challenging.a significant increase in serum antibody levels was observed in chickens vaccinated with the attenuated livevaccine and the two dna vaccines. additionally, the lymphocyte proliferation (si values) were higher inchickens immunized with the attenuated live vaccine and the two dna vaccines than in those vaccinatedwith pcdna3.1(+) and pbs (p

Upgrade to premium to download articles

Sign up to access the full text

Already have an account?login

similar resources

Immune efficacy of OmpH and OmpA DNA vaccines against avian Pasteurella multocida

Avian Pasteurella multocida is an agent of fowl cholera. The protective effect achieved through orthodoxvaccines is not ideal. The research on novel vaccines against avian Pasteurella multocida is imperative. Inthis study, the genes encoding outer membrane protein H and A (OmpH and OmpA) were cloned into theeukaryotic expression vector pcDNA3.1(+) and the recombinant plasmids, namely DNA vaccin...

full text

Molecular typing of avian Pasteurella multocida isolates from Iran by PCR-RFLP of OmpH gene

Molecular typing of twenty-five Pasteurella multocida isolates has been assessed by restriction fragment length polymorphism (RFLP) of a species-specific PCR assay. All of the P.multocida isolates were recovered from fowl cholera outbreaks in Northern provinces of Iran. Amplification was based on the gene ompH, encoding a major outer membrane protein (protein H). PCR with ompH primers amplified...

full text

Characterisation of avian Pasteurella multocida strains with PCR-RFLP analysis of the ompH gene.

The 16 somatic serotype type strains and 60 field isolates of Pasteurella multocida, representing various avian species and geographic regions in Hungary, were characterised by PCR-restriction fragment length polymorphism (PCR-RFLP) analysis of the ompH gene with DraI restriction endonuclease. The type strains yielded eight different (I-VIII) profiles. Strains whose PCR fragment was uncut by Dr...

full text

Molecular Typing of Avian Pasteurella multocida lsolatesby PCR-RFLPof ompH Gene

Molecular typing of twenty-five Pasteurella multocida isolates has been assessed by restriction fragmentlength polymorphism (RFLP) of a species-specific PCR assay. Amplification was based on the gene ompH, encoding a major outer memberane protein. RFLP analysis of the 1.2 kb ompH-amplification usingEcoRI, HindIII and CfoI endonucleases produced 7 different patterns for the twenty fi...

full text

Evaluation of immunogenicity and protective efficacy of recombinant ptfA of avian Pasteurella multocida

Avian Pasteurella multocida is the causative agent of fowl cholera, a disease much affecting the poultry industry. In order to study the efficacy of the recombinant subunit vaccine constructed with ptfA gene of avian P. multocida, the ptfA gene fragment amplified by PCR from avian P. multocida was cloned into the prokaryotic expression vector pET32a and the recombinant plasmid pET32a-ptfA was o...

full text

My Resources

Save resource for easier access later


Journal title:
iranian journal of veterinary research

Publisher: shiraz university

ISSN 1728-1997

volume 14

issue 3 2013

Hosted on Doprax cloud platform doprax.com

copyright © 2015-2023