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Jiang X, Gao M, Ding Y, Wang J, Song Y, Xiao H, Kong X. Interleukin-17B in common carp (Cyprinus carpio L.): Molecular cloning and immune effects as immune adjuvant of Aeromonas veronii formalin-killed vaccine. FISH & SHELLFISH IMMUNOLOGY 2024:109832. [PMID: 39147176 DOI: 10.1016/j.fsi.2024.109832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2024] [Revised: 08/11/2024] [Accepted: 08/12/2024] [Indexed: 08/17/2024]
Abstract
The interleukin-17 (IL-17) family of cytokines is critical for host defense responses and mediates different pro- or anti-inflammatory mediators through different signaling pathways. However, the function of the related family member, IL-17B, in teleosts is poorly understood. In the present study, an IL-17B homolog (CcIL-17B) in common carp (Cyprinus carpio) was identified, and sequence analysis showed that CcIL-17B had eight conserved cysteine residues, four of which could form two pairs of disulfide bonds, which in turn formed a ring structure composed of nine amino acids (aa). The deduced aa sequences of CcIL-17B shared 35.79-92.93% identify with known homologs. The expression patterns were characterized in healthy and bacteria-infected carp. In healthy carp, IL-17B mRNA was highly expressed in the spleen, whereas Aeromonas veronii effectively induced CcIL-17B expression in the liver, head, kidney, gills, and intestine. The recombinant protein rCcIL-17B could regulate the expression levels of inflammatory cytokines (such as IL-1β, IL-6, TNF-α, and IFN-γ) in primary cultured head kidney leukocytes in vitro. As an adjuvant for the formalin-killed A. veronii (FKA) vaccine, rCcIL-17B induced the production of specific antibodies more rapidly and effectively than Freund's complete adjuvant (FCA). The results of the challenge experiments showed that the relative percent survival (RPS) after vaccination with rCcIL-17B was 78.13%. This percentage was significantly elevated compared to that observed in the alternative experimental groups (62.5% and 37.5%, respectively). Additionally, the bacterial loads in the spleen of the rCcIL-17B + FKA group were significantly lower than those in the control group from 12 h to 48 h after bacterial infection. Furthermore, histological analysis showed that the epithelial cells were largely intact, and the striated border structure was complete in the intestine of rCcIL-17B+FKA group. Collectively, our results demonstrate that CcIL-17B plays a crucial role in eliciting immune responses and evokes a higher RPS against A. veronii challenge compared to the traditional adjuvant FCA, indicating that rCcIL-17B is a promising vaccine adjuvant for controlling A. veronii infection.
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Affiliation(s)
- Xinyu Jiang
- Engineering Lab of Henan Province for Aquatic Animal Disease Control, College of Fisheries, Henan Normal University, Xinxiang, Henan, 453007, China
| | - Mengjie Gao
- Engineering Lab of Henan Province for Aquatic Animal Disease Control, College of Fisheries, Henan Normal University, Xinxiang, Henan, 453007, China
| | - Yi Ding
- Engineering Lab of Henan Province for Aquatic Animal Disease Control, College of Fisheries, Henan Normal University, Xinxiang, Henan, 453007, China
| | - Junya Wang
- Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, Shanghai, 201306, China
| | - Yunjie Song
- Engineering Lab of Henan Province for Aquatic Animal Disease Control, College of Fisheries, Henan Normal University, Xinxiang, Henan, 453007, China
| | - Hehe Xiao
- Engineering Lab of Henan Province for Aquatic Animal Disease Control, College of Fisheries, Henan Normal University, Xinxiang, Henan, 453007, China
| | - Xianghui Kong
- Engineering Lab of Henan Province for Aquatic Animal Disease Control, College of Fisheries, Henan Normal University, Xinxiang, Henan, 453007, China.
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Wang Q, Sun D, Wang D, Ye B, Wang S, Zhou A, Dong Z, Zou J. Effect of dietary koumine on the immune and antioxidant status of carp (Cyprinus carpio) after Aeromonas hydrophila infection. Microb Pathog 2024; 186:106464. [PMID: 38043626 DOI: 10.1016/j.micpath.2023.106464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2023] [Revised: 11/20/2023] [Accepted: 11/23/2023] [Indexed: 12/05/2023]
Abstract
Koumine (KM) has anxiolytic, anti-inflammatory and growth-promoting effects in pigs and sheep. Based on the growth-promoting and immunological effects of koumine, the present study was conducted on Cyprinus carpio (C. carpio) with four KM concentrations: 0 mg/kg, 0.2 mg/kg, 2 mg/kg, and 20 mg/kg for 10 weeks, followed by a 1-week Aeromonas hydrophila (A. hydrophila) infection experiment. The effect of KM on the immunity of A. hydrophila infected carp was analyzed by histopathology, biochemical assay, and qRT-PCR to assess the feasibility of KM in aquaculture. The results showed that the presence of KM alleviated pathogen damage to carp tissues. At 2 mg/kg and 20 mg/kg concentrations of KM successively and significantly elevated (p < 0.05) the SOD activities in the intestinal tract, hepatopancreas and kidney of carp. The expression levels of hepatopancreatic antioxidant genes Nrf2 and IGF-1 were significantly up-regulated in the same group (p < 0.05), while the expression levels of immune genes IL-8 and IL-10 were down-regulated. In summary, KM at concentrations of 2 mg/kg and 20 mg/kg could regulate the expression of antioxidant and immune genes in various tissues in an orderly and rapid manner, and significantly improve the antioxidant and immune abilities of carp, which is conducive to the improvement of the resilience of carp.
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Affiliation(s)
- Qiujie Wang
- Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China
| | - Di Sun
- Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China
| | - Dongjie Wang
- Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China
| | - Bin Ye
- Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China
| | - Shaodan Wang
- College of Marine Sciences, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Aiguo Zhou
- Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China
| | - Zaijie Dong
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture and Rural Affairs, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi, 214081, China.
| | - Jixing Zou
- Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China.
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Liang H, Xie Y, Li M, Chen J, Zhou W, Xia R, Ding Q, Yao Y, Zhang Z, Yang Y, Ran C, Zhou Z. The effect of stabilized culture of Lactobacillus rhamnosus GCC-3 on gut and liver health, and anti-viral immunity of zebrafish. FISH & SHELLFISH IMMUNOLOGY 2023; 141:109074. [PMID: 37714442 DOI: 10.1016/j.fsi.2023.109074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Revised: 07/31/2023] [Accepted: 09/11/2023] [Indexed: 09/17/2023]
Abstract
Probiotics are promising antibiotics alternatives to improve growth and disease resistance of cultured fish. Our study aimed to investigate the effect of dietary stabilized culture of Lactobacillus rhamnosus GCC-3 on growth performance, gut and liver health and anti-viral ability of zebrafish (Danio rerio). Zebrafish (0.161 ± 0.001 g) were fed control and the experimental diet containing 1% GCC-3 culture (1 × 107 CFU/g diet) for four weeks. Growth performance and gut and liver health parameters were monitored after four weeks feeding. The gut microbiota was analyzed by 16S rRNA gene sequencing. In another experiment, zebrafish (0.212 ± 0.001 g) were fed with basal or GCC-3 diets and challenged by spring viremia of carp virus (SVCV) at the end of feeding. The antiviral immune response was evaluated at 2nd and 4th days post SVCV infection and survival rate was calculated 14 days after challenge. The results showed that adding 1% GCC-3 significantly improved growth performance of zebrafish (P < 0.05). The intestinal expression of hypoxia-inducible factor Hif-1α, tight junction protein ZO-1α and ZO-1β was significantly up-regulated in 1% GCC-3 group compared with control (P < 0.05). Besides, 1% GCC-3 decreased the content of MDA and increased total antioxidant capacity in the intestine, and the relative expression of SOD, GST and Gpxa was improved. The abundance of Proteobacteria was reduced while Firmicutes was enriched in the intestinal microbiota of 1% GCC-3 group compared with control (P < 0.05). Zebrafish fed 1% GCC-3 showed higher survival rate after SVCV challenge. Accordingly, the expression of antiviral genes in the spleen was increased at 2nd and 4th days post infection. In conclusion, our results indicate that dietary 1% GCC-3 supplementation can improve gut and liver health as well as antiviral immunity of zebrafish.
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Affiliation(s)
- Hui Liang
- Sino-Norway Joint Lab on Fish Gut Microbiota, Institute of Feed Research, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Yadong Xie
- Sino-Norway Joint Lab on Fish Gut Microbiota, Institute of Feed Research, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Ming Li
- Sino-Norway Joint Lab on Fish Gut Microbiota, Institute of Feed Research, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Jie Chen
- Sino-Norway Joint Lab on Fish Gut Microbiota, Institute of Feed Research, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Wenhao Zhou
- Sino-Norway Joint Lab on Fish Gut Microbiota, Institute of Feed Research, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Rui Xia
- Sino-Norway Joint Lab on Fish Gut Microbiota, Institute of Feed Research, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Qianwen Ding
- Norway-China Joint Lab on Fish Gastrointestinal Microbiota, Institute of Biology, Norwegian University of Science and Technology, Trondheim, Norway
| | - Yuanyuan Yao
- Key Laboratory for Feed Biotechnology of the Ministry of Agriculture and Rural Affairs, Institute of Feed Research, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Zhen Zhang
- Key Laboratory for Feed Biotechnology of the Ministry of Agriculture and Rural Affairs, Institute of Feed Research, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Yalin Yang
- Key Laboratory for Feed Biotechnology of the Ministry of Agriculture and Rural Affairs, Institute of Feed Research, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Chao Ran
- Key Laboratory for Feed Biotechnology of the Ministry of Agriculture and Rural Affairs, Institute of Feed Research, Chinese Academy of Agricultural Sciences, Beijing, 100081, China.
| | - Zhigang Zhou
- Sino-Norway Joint Lab on Fish Gut Microbiota, Institute of Feed Research, Chinese Academy of Agricultural Sciences, Beijing, 100081, China.
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Yang S, Feng L, Zhang J, Yan C, Zhang C, Huang Y, Li M, Luo W, Huang X, Wu J, Du X, Li Y. Effect of Purslane ( Portulaca oleracea L.) on Intestinal Morphology, Digestion Activity and Microbiome of Chinese Pond Turtle ( Mauremys reevesii) during Aeromonas hydrophila Infection. Int J Mol Sci 2023; 24:10260. [PMID: 37373406 DOI: 10.3390/ijms241210260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 06/12/2023] [Accepted: 06/14/2023] [Indexed: 06/29/2023] Open
Abstract
Large-scale mortality due to Aeromonas hydrophila (A. hydrophila) infection has considerably decreased the yield of the Chinese pond turtle (Mauremys reevesii). Purslane is a naturally active substance with a wide range of pharmacological functions, but its antibacterial effect on Chinese pond turtles infected by A. hydrophila infection is still unknown. In this study, we investigated the effect of purslane on intestinal morphology, digestion activity, and microbiome of Chinese pond turtles during A. hydrophila infection. The results showed that purslane promoted epidermal neogenesis of the limbs and increased the survival and feeding rates of Chinese pond turtles during A. hydrophila infection. Histopathological observation and enzyme activity assay indicated that purslane improved the intestinal morphology and digestive enzyme (α-amylase, lipase and pepsin) activities of Chinese pond turtle during A. hydrophila infection. Microbiome analysis revealed that purslane increased the diversity of intestinal microbiota with a significant decrease in the proportion of potentially pathogenic bacteria (such as Citrobacter freundii, Eimeria praecox, and Salmonella enterica) and an increase in the abundance of probiotics (such as uncultured Lactobacillus). In conclusion, our study uncovers that purslane improves intestinal health to protect Chinese pond turtles against A. hydrophila infection.
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Affiliation(s)
- Shiyong Yang
- Department of Aquaculture, College of Animal Science & Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Langkun Feng
- Department of Aquaculture, College of Animal Science & Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Jiajin Zhang
- Department of Aquaculture, College of Animal Science & Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Chaozhan Yan
- Department of Aquaculture, College of Animal Science & Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Chaoyang Zhang
- Department of Aquaculture, College of Animal Science & Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Yanbo Huang
- Department of Aquaculture, College of Animal Science & Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Minghao Li
- Department of Aquaculture, College of Animal Science & Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Wei Luo
- Department of Aquaculture, College of Animal Science & Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Xiaoli Huang
- Department of Aquaculture, College of Animal Science & Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Jiayun Wu
- Department of Engineering and Applied Biology, College of Life Science, Sichuan Agricultural University, Ya'an 625014, China
| | - Xiaogang Du
- Department of Engineering and Applied Biology, College of Life Science, Sichuan Agricultural University, Ya'an 625014, China
| | - Yunkun Li
- Department of Engineering and Applied Biology, College of Life Science, Sichuan Agricultural University, Ya'an 625014, China
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Liu W, Zhang J, Liang X, Wang Y, Liu R, Zhang R, Zha J, Martyniuk CJ. Environmental concentrations of 2, 4-DTBP cause immunotoxicity in zebrafish (Danio rerio) and may elicit ecological risk to wildlife. CHEMOSPHERE 2022; 308:136465. [PMID: 36126734 DOI: 10.1016/j.chemosphere.2022.136465] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 08/29/2022] [Accepted: 09/12/2022] [Indexed: 06/15/2023]
Abstract
Synthetic phenolic antioxidant 2,4-di-tert-butylphenol (2,4-DTBP) has gained growing concerns due to relatively high concentrations in aquatic ecosystems. There are, however, significant knowledge gaps regarding its potential toxicity to aquatic organisms. In this study, zebrafish (Danio rerio) larvae were exposed to 0.01, 0.1, or 1 μM 2,4-DTBP for 6 d. Transcriptomic analysis of larvae revealed that biological processes related to anti-inflammatory function of macrophage M2 lineage were inhibited by 0.01 μM 2,4-DTBP. Decreases of transcripts related to the IL1B-MYD88-NF-κB pathway (i.e., il1b, il1rl1, myd88, irak4, irak1, traf6, ikbkg, nfkbia, nfkb) and protein levels of NF-κB in larvae intestine confirmed anti-inflammatory effects of 2,4-DTBP. Subsequently, larvae exposed to 2,4-DTBP were challenged with E. coli and showed higher survival rate, suggesting sustained activation of inflammation via LPS can be attenuated by 2,4-DTBP. Moreover, histological examination revealed that intestine barrier was compromised and there was an imbalance of intestine macrophage homeostasis. Food intake was also reduced following exposure to 0.1 and 1 μM 2,4-DTBP. In addition, a risk assessment revealed that 2,4-DTBP in surface water pose low to high ecological risks to aquatic organisms. Taken together, exposure to environmentally relevant concentrations of 2,4-DTBP could negatively affect immune response in zebrafish and may elicit ecological risk in fish population.
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Affiliation(s)
- Wang Liu
- Inner Mongolia Key Laboratory of Environmental Pollution Control & Waste Resource Reuse, School of Ecology and Environment, Inner Mongolia University, Hohhot, 010021, China; Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; Beijing Key Laboratory of Industrial Wastewater Treatment and Reuse, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
| | - Jiye Zhang
- Inner Mongolia Key Laboratory of Environmental Pollution Control & Waste Resource Reuse, School of Ecology and Environment, Inner Mongolia University, Hohhot, 010021, China
| | - Xuefang Liang
- Inner Mongolia Key Laboratory of Environmental Pollution Control & Waste Resource Reuse, School of Ecology and Environment, Inner Mongolia University, Hohhot, 010021, China.
| | - Yuchen Wang
- Inner Mongolia Key Laboratory of Environmental Pollution Control & Waste Resource Reuse, School of Ecology and Environment, Inner Mongolia University, Hohhot, 010021, China
| | - Ruimin Liu
- Inner Mongolia Key Laboratory of Environmental Pollution Control & Waste Resource Reuse, School of Ecology and Environment, Inner Mongolia University, Hohhot, 010021, China
| | - Ruiqing Zhang
- Inner Mongolia Key Laboratory of Environmental Pollution Control & Waste Resource Reuse, School of Ecology and Environment, Inner Mongolia University, Hohhot, 010021, China
| | - Jinmiao Zha
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; Beijing Key Laboratory of Industrial Wastewater Treatment and Reuse, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
| | - Christopher J Martyniuk
- Department of Physiological Sciences and Center for Environmental and Human Toxicology, University of Florida Genetics Institute, Interdisciplinary Program in Biomedical Sciences Neuroscience, College of Veterinary Medicine, University of Florida, Gainesville, FL, 32611, USA
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Suyapoh W, Sornying P, Thanomsub C, Kraonual K, Jantana K, Tangkawattana S. Distinctive location of piscine intestinal coccidiosis in Asian seabass fingerlings. Vet World 2022; 15:2164-2171. [PMID: 36341050 PMCID: PMC9631385 DOI: 10.14202/vetworld.2022.2164-2171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Accepted: 07/26/2022] [Indexed: 11/16/2022] Open
Abstract
Background and Aim: Coccidian infection (coccidiosis) is one of the most important causes of illness and death in the fish population, including Asian sea bass. The fingerling developmental stage is sensitive to various infectious agents. Economic losses are sustained by the sea bass aquaculture industry due to coccidiosis annually. However, the related pathological changes in the Asian sea bass fingerlings’ three-part intestine remain unknown. This study aimed to investigate the Asian sea bass fingerlings’ infection rate, infection location and site, and specific pathological lesions in the small intestinal tissues in a marine cage farming operation. Materials and Methods: A cross-sectional study was conducted on 44 fingerling fishes. Major coccidia proportions were identified morphologically at both the macroscopic and microscopic levels. The infection number was determined based on coccidia presence at various intestinal locations and sites. All areas were assessed for pathological lesions using semi-quantitative grading. Analysis of variance was used to perform all data analyses using the SPSS software. Data were expressed as means ± standard deviation. p < 0.05 was considered statistically significant. Results: All Asian sea bass fingerlings studied were infected with coccidia. Enteritis and mucosal necrosis were distinct lesions found in the anterior intestine, which had the highest infection rate (49.94%), followed by the mid intestine (35.63%), and the posterior intestine (22.43%). The most common coccidian infection site was extracellular (subepithelial), followed by intracytoplasmic, and epicellular sites. Histopathological lesion determination revealed that intestinal tissue inflammation and epithelial injuries were predominantly seen in the anterior gut (p < 0.05). Conclusion: There was a high coccidian infection rate in Asian sea bass fingerlings from marine cage farming operations. Infection and intestinal damage at the anterior intestine, a major site, led to fingerling death. Disease prevention in the nursery should be intensive from the fingerling period to decrease the fatality rate caused by coccidia.
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Affiliation(s)
- Watcharapol Suyapoh
- Department of Veterinary Science, Faculty of Veterinary Science, Prince of Songkla University, Songkhla, Thailand; WHO Collaborating Centre for Research and Control of Opisthorchiasis (Southeast Asian Liver Fluke Disease), Tropical Diseases Research Center, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - Peerapon Sornying
- Department of Veterinary Science, Faculty of Veterinary Science, Prince of Songkla University, Songkhla, Thailand
| | - Chanoknun Thanomsub
- Department of Veterinary Science, Faculty of Veterinary Science, Prince of Songkla University, Songkhla, Thailand
| | - Khemjira Kraonual
- Department of Veterinary Science, Faculty of Veterinary Science, Prince of Songkla University, Songkhla, Thailand
| | - Korsin Jantana
- Department of Veterinary Science, Faculty of Veterinary Science, Prince of Songkla University, Songkhla, Thailand
| | - Sirikachorn Tangkawattana
- WHO Collaborating Centre for Research and Control of Opisthorchiasis (Southeast Asian Liver Fluke Disease), Tropical Diseases Research Center, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand; Faculty of Veterinary Medicine, Khon Kaen University, Khon Kaen, Thailand
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Zhang C, Yuan X, Xu R, Qi Q, Wang Y. The intestinal histopathology, innate immune response and antioxidant capacity of blunt snout bream (Megalobrama amblycephala) in response to Aeromonas hydrophila. FISH & SHELLFISH IMMUNOLOGY 2022; 124:525-533. [PMID: 35489592 DOI: 10.1016/j.fsi.2022.04.037] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 04/12/2022] [Accepted: 04/21/2022] [Indexed: 06/14/2023]
Abstract
The present study was performed to determine the effects of Aeromonas hydrophila infection on intestinal -histopathology, innate immune response and changes in antioxidant capacity of blunt snout bream (Megalobrama amblycephala). A series of histopathological changes, innate immune enzyme activities, antioxidant enzyme activities, and the corresponding mRNA relative genes expressions in intestines were measured at 0, 1, 2, and 3 weeks post-treatment of Aeromonas hydrophila (1✕107 CFU mL-1) infection. The results showed that Aeromonas hydrophila induced changes in intestinal morphology, including the decreased muscularis thickness, the proliferated goblet cells, and the atrophied intestine villi height. Moreover, the innate immune enzymes activities in serum such as acid phosphatase, alkaline phosphatase, lysozyme activities and immunoglobulin M were significantly reduced after infection at 1week, 2week and 3week. The contents of complement 3 and complement 4 were significantly decreased after infection as well. In addition, the antioxidant enzymes activities, including superoxide dismutase, catalase and glutathione peroxidase in the experimental groups were significantly decreased compared with the control group, whereas the content of malondialdehyde was significantly increased after infection at 1week, 2week and 3week. Furthermore, the mRNA relative expressions of the inflammatory cytokines such as tumor necrosis factor-α, interleukins-1β, interferon-γ, and interleukins-6 were significantly increased after infection with Aeromonas hydrophila. The TJ-related gene expressions in the intestine of zonula occluden-1, occludin, occludin-1, occludin-2 were significantly reduced throughout the infection period. The mRNA relative expressions of signal transducers and activators of transcription 4 and janus kinase-3 in the intestine were significantly ascended compared with the non-infected group. Overall, the results elucidated that the intestine tissue injury and innate immune response reduction, as well as antioxidant capacity attenuation were occurred against Aeromonas hydrophila infection of the blunt snout bream.
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Affiliation(s)
- Chunnuan Zhang
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, 471003, China.
| | - Xiaoyu Yuan
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, 471003, China
| | - Ruiyi Xu
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, 471003, China
| | - Qian Qi
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, 471003, China
| | - Yang Wang
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, 471003, China
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El-Sherbeny EME, Khoris EA, Kassem S. Assessment the efficacy of some various treatment methods, in vitro and in vivo, against Aeromonas hydrophila infection in fish with regard to side effects and residues. Comp Biochem Physiol C Toxicol Pharmacol 2022; 253:109246. [PMID: 34801729 DOI: 10.1016/j.cbpc.2021.109246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2021] [Revised: 11/10/2021] [Accepted: 11/14/2021] [Indexed: 11/21/2022]
Abstract
Aeromonas hydrophila is an opportunistic bacteria with an overwhelming impact on fish farming industry especially with upraising of drug resistant mutants. This study aimed to evaluate and compare the therapeutic and side effects of levofloxacin (LEV), chitosan-nanoparticles (CNPs), and fructooligosaccharides (FOS) in control of this infection in tilapia. A total of 160 Nile-tilapia divided into 8-groups; G1: negative-control, G2: infected-control, G3: non-infected-(levofloxacin (LEV) 10 mg/kg bwt), G4: non-infected-(chitosan-nanoparticles (CNPs) 1 g/kg ration), G5: non-infected-(fructooligosaccharides (FOS) 20 g/kg ration), G6: infected-LEV, G7: infected-CNPs and G8: infected-FOS for 7 days. MICs were (0.125 μg/ml and 1.25 mg/ml) for LEV and CNPs respectively. No mortalities or significant adverse effects were recorded in non-infected treated-groups while infected were (20%) LEV, (30%) CNPs, (40%) FOS and (70%) G2. Aspartate aminotransferase (AST), alanine aminotransferase (ALT) and alkaline phosphatase (ALP) decreased by LEV and CNPs than FOS while all increased total protein (TP) and albumin than G2. Malondialdehyde (MDA) significantly decreased and superoxide dismutase (SOD) and reduced glutathione (GSH) increased in all infected-treated groups than G2 in various degrees. Urea and creatinine descending order were FOS, LEV then CNPs decreased significantly than G2. LEV musculature residues, using HPLC, decreased gradually till the 5th day; 621.00 ± 0.66, 270.00 ± 0.48 then 64.00 ± 0.40, and 471.00 ± 0.79, 175.00 ± 0.52 ppb then not detected at 1st, 3rd, and 5th days of withdrawal in non-infected and infected groups respectively. Finally, LEV and CNPs were superior as bactericidal, decreasing mortalities and enzyme activities while CNPs and FOS increased performance, non-specific immunity, and antioxidant biomarkers.
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Affiliation(s)
- Eman M El El-Sherbeny
- Pharmacology unit, Tanta lab, Animal Health Research Institute, Agricultural Research Center, Giza, Egypt
| | - Enas A Khoris
- Fish disease unit, Tanta lab, Animal Health Research Institute, Agricultural Research Center, Giza, Egypt
| | - Samr Kassem
- Nanomaterials Research and Synthesis Unit, Animal Health Research Institute, Agricultural Research Center, Giza, Egypt.
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Yang Y, Lim J, Li C, Lee S, Hong S. Effects of sulfated polysaccharides isolated from Codium fragile on inflammatory cytokine gene expression and Edwardsiella tarda infection in rockfish, Sebastes schlegelii. FISH & SHELLFISH IMMUNOLOGY 2021; 112:125-134. [PMID: 33737238 DOI: 10.1016/j.fsi.2021.03.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 02/22/2021] [Accepted: 03/03/2021] [Indexed: 06/12/2023]
Abstract
Sulfated polysaccharides (SPs) derived from Codium fragile (sponge seaweed) can regulate cytokine expression in mammalian macrophages, NK cell lines and olive flounder head kidney primary cells in vitro. In this study, we found that SPs from C. fragile exhibited anti-bacterial activities against fish pathogenic bacteria including Streptococcus parauberis, Lactococcus garvieae, Aeromonas salmonicida and Edwardsiella tarda at a minimum inhibitory concentration of 2 mg/mL, but not against S. iniae or Vibrio anguillarum. Immunostimulatory effects of SPs from C. fragile on rockfish (Sebastes schlegelii) were evaluated by analyzing mRNA expression levels of inflammatory cytokines (interleukin (IL)-1β, IL-8, IL-6 and tumor necrosis factor (TNF)-α) and anti-inflammatory cytokines (IL-10) both in vitro and in vivo. Results revealed that expression levels of all genes tested were upregulated in rockfish head kidney and spleen cells by SPs from C. fragile in a dose/time-dependent manner in vitro. By contrast, expression levels of these genes were significantly (p < 0.05) downregulated in the head kidney and spleen of rockfish in vivo at 1 and 3 days post intraperitoneal injection of SPs from C. fragile. In the liver, these genes were downregulated on day 1, but upregulated on day 3. Treatment with SPs downregulated the expression of these genes in spleen, but upregulated IL-10 gene expression in the intestine and liver. Meanwhile, when fish were fed with crude SPs for 4 weeks and challenged with E. tarda, infected fish started to die starting from 2 days after immune challenge. The cumulative mortality of the 0.1% group was significantly lower (p < 0.05) than that of the control group without feeding with SPs. Expression levels of IL-1β and IL-6 genes were significantly (p < 0.05) upregulated in head kidney of the 0.5% group on day 1 while IL-1β gene expression was downregulated on day 3 in the liver. These results indicate that SPs from C. fragile can regulate the immune gene expression in rockfish and that a diet containing 0.1% crude SPs can reduce the mortality of rockfish caused by E. tarda infection.
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Affiliation(s)
- Yong Yang
- Department of Marine Biotechnology, Gangneung-Wonju National University, Gangneung, 25457, South Korea
| | - Jongwon Lim
- Department of Marine Biotechnology, Gangneung-Wonju National University, Gangneung, 25457, South Korea
| | - Changsheng Li
- Department of Marine Food Science and Technology, Gangneung-Wonju National University, Gangneung, 25457, South Korea
| | - Sangmin Lee
- Department of Marine Biotechnology, Gangneung-Wonju National University, Gangneung, 25457, South Korea
| | - Suhee Hong
- Department of Marine Biotechnology, Gangneung-Wonju National University, Gangneung, 25457, South Korea.
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