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Tropical Biomedicine ; : 142-148, 2024.
Article in English | WPRIM | ID: wpr-1038578

ABSTRACT

@#Salmonella enterica subsp. enterica serovar Enteritidis (SE) is a global concern for the poultry industry due to its association with foodborne illnesses. The transmission occurs through the transovarial route which initiates from colonization in oviducts and ascending to ovaries. Though there are studies on cytosine-phosphate-guanine oligodeoxynucleotide (CpG-ODN) and the increase of innate immune response, there is limited research on the intravaginal treatment using CpG-ODN. Previous studies have shown that stimulating CpG-ODN can induce the production of antimicrobial peptide avian beta-defensins (AvBDs) in vaginal cell cultures, there is limited information on the use of intravaginal treatment to induce the innate immune system, particularly in the Kampung Unggul Balitbangtan (KUB-1) chickens (Gallus gallus domesticus). This study investigates the impact of intravaginal CpG-ODN stimulation on the innate immune response in KUB-1 chicken ovaries and oviducts when challenged to SE. A total of 39 KUB-1 chickens were divided into four groups namely T1 (treated with CpG-ODN, n=12), T2 (SE group, n=12), T3 (CpG-ODN and SE, n=12), and Control (without CpG-ODN and SE, n=3). Chickens were observed from day 1 to 4 post-intravaginal (PI) inoculation. The results suggest that intravaginal CpG-ODN treatment modulates AvBD10 production through toll-like receptor (TLR)21, with interleukin (IL)1B and IL10 playing reciprocal roles, providing insights into the potential of this treatment to prevent transovarial Salmonellosis in poultry. The novelty of this study adds valuable insights to the current body of knowledge.

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