Protective immunity against Newcastle disease

The role of antibodies specific to Newcastle disease virus polypeptides

Donald Reynolds, A. D. Maraqa

Research output: Contribution to journalArticle

57 Citations (Scopus)

Abstract

Studies were performed to determine if passive immunization with hyperimmune sera generated to specific Newcastle disease virus (NDV) proteins conferred protection against virus challenge. Six groups of 3-wk-old chickens were passively immunized with antiserum against either hemagglutinin-neuraminidase/fusion, (HN/F) protein, nucleoprotein/phosphoprotein (NP/P), Matrix (M) protein, a mixture of all NDV proteins (ALL), intact ultraviolet-inactivated NDV (UVNDV), or negative sera. Blood samples were collected 2 days postimmunization, and the birds were challenged with Texas GB strain of NDV. Antibody titers were detected from those recipient birds that had received the antisera against the HN/F, ALL, or UVNDV by a hemagglutination inhibition test, an enzyme-linked immunosorbent assay (ELISA), and a virus neutralization test. Antibodies were detected only by the ELISA from the birds that had received antisera against NP/P and M protein. Antibody titers in the recipient birds dropped by two dilutions (log2) after 2 days postinjection. Birds passively immunized with antisera against HN/F, ALL, and UVNDV were protected from challenge, whereas chickens passively immunized with antisera against NP/P and M protein and specific-pathogen-free sera developed clinical signs of Newcastle disease. The challenge virus was recovered from the tracheas of all passively immunized groups. The presence of neutralizing antibodies to NDV provided protection from clinical disease but was unable to prevent virus shedding from the trachea.

Original languageEnglish (US)
Pages (from-to)138-144
Number of pages7
JournalAvian diseases
Volume44
Issue number1
DOIs
StatePublished - Jan 1 2000

Fingerprint

Newcastle Disease
Newcastle disease virus
Newcastle disease
antiserum
Immunity
polypeptides
immunity
Birds
Immune Sera
Peptides
phosphoproteins
nucleoproteins
antibodies
Nucleoproteins
sialidase
Antibodies
Phosphoproteins
Hemagglutinins
Neuraminidase
hemagglutinins

Keywords

  • Humoral immune response
  • Newcastle disease virus
  • Passive immunization
  • Protection

ASJC Scopus subject areas

  • Food Animals
  • Animal Science and Zoology
  • Immunology and Microbiology(all)

Cite this

Protective immunity against Newcastle disease : The role of antibodies specific to Newcastle disease virus polypeptides. / Reynolds, Donald; Maraqa, A. D.

In: Avian diseases, Vol. 44, No. 1, 01.01.2000, p. 138-144.

Research output: Contribution to journalArticle

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