AI Article Synopsis
- This study assessed plant-based immune-adjuvants from Phoenix dactylifera and Mentha piperita, suggesting their potential as effective vaccine boosters due to fewer side effects compared to traditional adjuvants.
- Eight different infectious coryza (IC) vaccines were created using various adjuvants, including Montanide™ ISA 201, and tested on chickens for their immune response and protection against bacteria.
- Results indicated that using a 2 mg concentration of the plant extracts with liquid paraffin oil enhanced the immune response, confirming their immunomodulatory properties and suggesting Montanide™ ISA 201 as the most effective adjuvant for boosting protective responses in vaccine formulations.
Article Abstract
This study evaluated plant-based immune-adjuvants from crude extracts of Phoenix dactylifera and Mentha piperita as promising adjuvants for vaccines because of the limited side effects associated with plant extracts. In addition, Montanide™ ISA 201 previously used in vaccines in cattle. Eight different infectious coryza (IC) vaccines were prepared from three serovars [A (W strain and local strain), C (Modesto strain) and B (0222 strain)] with eight Avibacterium paragallinarum vaccines adjuvants formulae using liquid paraffin, Montanide™ ISA 71, Montanide™ ISA 201, and Montanide™ Gel adjuvants, P. dactylifera and M. piperita as immune-stimulants at a concentration of 1 mg and 2 mg incorporated with or without liquid paraffin oil as an adjuvant. These vaccines were applied in a chicken model. After a single immunization, the eight vaccine formulations were evaluated using the ELISA and Microplate agglutination test. Evidence of protection in the immunized birds was based on the results after challenge and bacterial isolation. The incorporation of the crude aqueous extract of P. dactylifera or M. piperita at a concentration of 2 mg in a liquid paraffin oil adjuvanted IC vaccine could be employed as an efficient adjuvant for chicken to IC vaccine to enhance immune responses. Also,Montanide™ ISA 201 may be the best adjuvant to be used to enhance the protective response against Av. paragallinarum. Our results confirm that aqueous extracts of M. piperita leaves and P. dactylifera fruit have immunomodulatory potentials in vivo and elevated serum antibodies against Av. Paragallinarum.
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| http://dx.doi.org/10.1016/j.actatropica.2019.105281 | DOI Listing |
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