Ethyl caffeate modulates systemic and mucosal immune responses, growth performance, and disease resistance against Vibrio parahaemolyticus in hybrid grouper (Epinephelus fuscoguttatus ♀ × E. lanceolatus ♂)

IF 4.1 2区 农林科学 Q1 FISHERIES
Ari Widodo, Huai-Ting Huang, Novi Rosmala Dewi, Yu-Ting Chu, Fan-Hua Nan
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引用次数: 0

Abstract

Hybrid groupers become one of the important aquatic animals, but gastric pathogen infection causes losses due to Vibrio sp. infections. Ethyl caffeate (EC), a naturally occurring antioxidant and antibacterial derived from medicinal plant. This study investigated the effects of EC on the immune response, growth performance, as well as the systemic and mucosal immunity following Vibrio parahaemolyticus challenge. The hybrid groupers were fed diets containing EC at the concentrations of 0, 0.1, 0.25, and 0.5 g/kg (control, EC0.1, EC0.25, and EC0.5 groups, respectively). This feeding trial was conducted in three-part separate experiments consist of non-specific immune response, growth performance and challenge test experiment. The result demonstrated that the EC0.25 group had the highest total leukocyte count, phagocytic activity, and respiratory burst (O2) and the highest upregulation of genes related to antioxidant activity, inflammation, antimicrobial peptides, and stress. Furthermore, higher growth performance was observed in all EC groups than in the control group with the EC0.25 group exhibited optimum growth performance. According to the challenge test results, the EC0.25 group exhibited strong resistance to V. parahaemolyticus, with a survival rate of 96.7 %. This study elucidated a novel self-defense mechanism after EC modulating against V. parahaemolyticus challenge in hybrid groupers. The EC0.25 group had increased leukocyte subpopulation and the highest upregulation of Toll-like receptor 4, Toll-like receptor 21, MyD88, major histocompatibility complex II, immunoglobulin M, interleukin-1β, and tumor necrosis factor-α in both systemic and mucosal related-organs. Overall, dietary EC0.25 increased the hybrid groupers health status, activated multiple signaling pathways, and synergistically increased the host's systemic and mucosal immunity.

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来源期刊
Fish & shellfish immunology
Fish & shellfish immunology 农林科学-海洋与淡水生物学
CiteScore
7.50
自引率
19.10%
发文量
750
审稿时长
68 days
期刊介绍: Fish and Shellfish Immunology rapidly publishes high-quality, peer-refereed contributions in the expanding fields of fish and shellfish immunology. It presents studies on the basic mechanisms of both the specific and non-specific defense systems, the cells, tissues, and humoral factors involved, their dependence on environmental and intrinsic factors, response to pathogens, response to vaccination, and applied studies on the development of specific vaccines for use in the aquaculture industry.
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