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He Y, Zhang M, Dai C, Yu L. Comparison of the Gut Microbial Communities of Domestic and Wild Mallards ( Anas platyrhynchos) Based on High-Throughput Sequencing Technology. Animals (Basel) 2023; 13:2956. [PMID: 37760356 PMCID: PMC10525502 DOI: 10.3390/ani13182956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 09/12/2023] [Accepted: 09/15/2023] [Indexed: 09/29/2023] Open
Abstract
Mallards (Anas platyrhynchos) are currently one of the most popular species in rare bird breeding in several southern provinces of China, but there have been no studies comparing the gut microbial communities of domestic and wild mallards. In this study, 16S rRNA gene high-throughput sequencing technology was used to compare the composition and diversity of gut microbial communities in domestic and wild mallards. Alpha diversity analysis showed significant differences in gut microbial communities between the two groups of mallards, and the diversity and richness of gut microbial communities were significantly higher in wild mallards than in domestic mallards. Beta diversity analysis showed that the two groups of stool samples were mostly separated on the principal coordinate analysis (PCoA) plot. In domestic mallards, Firmicutes (68.0% ± 26.5%) was the most abundant bacterial phylum, followed by Proteobacteria (24.5% ± 22.9%), Bacteroidetes (3.1% ± 3.2%), Fusobacteria (2.2% ± 5.9%), and Actinobacteria (1.1% ± 1.8%). The dominant bacterial phyla in wild mallards were Firmicutes (79.0% ± 10.2%), Proteobacteria (12.9% ± 9.5%), Fusobacteria (3.4% ± 2.5%), and Bacteroidetes (2.8% ± 2.4%). At the genus level, a total of 10 dominant genera (Streptococcus, Enterococcus, Clostridium, Lactobacillus, Soilbacillus, Bacillus, Acinetobacter, Comamonas, Shigella, and Cetobacterium) with an average relative abundance greater than 1% were detected in the fecal samples of both groups. The average relative abundance of five potential pathogenic genera (Streptococcus, Enterococcus, Acinetobacter, Comamonas, and Shigella) was higher in domestic mallards than in wild mallards. The enrichment of pathogenic bacteria in the intestinal tract of domestic mallards should be of sufficient concern.
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Affiliation(s)
- Yaoyin He
- Animal Science and Technology College, Guangxi University, Nanning 530004, China; (Y.H.); (M.Z.)
| | - Minghui Zhang
- Animal Science and Technology College, Guangxi University, Nanning 530004, China; (Y.H.); (M.Z.)
| | - Chuanyin Dai
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, Guilin 541006, China;
| | - Lijiang Yu
- Animal Science and Technology College, Guangxi University, Nanning 530004, China; (Y.H.); (M.Z.)
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2
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Dietary Strategies to Modulate the Health Condition and Immune Responses in Gilthead Seabream (Sparus aurata) Juveniles Following Intestinal Inflammation. Animals (Basel) 2022; 12:ani12213019. [PMID: 36359143 PMCID: PMC9657010 DOI: 10.3390/ani12213019] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 10/26/2022] [Accepted: 10/31/2022] [Indexed: 11/06/2022] Open
Abstract
Simple Summary Feed additives are known to have biological proprieties that can improve fish health. This work assessed the effect of two feed additives (Phaeodactylum tricornutum extracts rich in β-glucans and curcumin) on the gilthead seabream health condition, and its modulatory effects following dextran sodium sulphate (DSS) administration as a chemical inducer of intestinal inflammation. While minor immune-enhancing changes were observed among fish fed dietary treatments at the end of the feeding trial, after the inflammatory stimulus, the feed additives were able to alleviate, to some extent, the DSS-induced effects at both the intestinal and systemic levels. Abstract Several feed additives have proved to be beneficial in eliciting fish health. Β-glucans and curcumin are compounds with immunomodulatory capacities known to increase growth performance, stimulate immunity, improve general health, and enhance disease resistance in fish. The present study aimed to evaluate the effects of dietary Phaeodactylum tricornutum extracts rich in β-glucans and curcumin on gilthead seabream health status prior to and following an intestinal inflammatory stimulus. Three experimental diets were formulated: a practical commercial-type diet (CTRL), a CTRL diet supplemented with 1% microalgae-derived β-glucans extract (BG), and a CTRL diet supplemented with 0.2% of curcumin (CUR). After 30 days of the feeding trial, fish were sampled and subjected to an oral administration of 1% dextran sodium sulphate (DSS) to induce intestinal inflammation. Four groups were considered: a group of fish continued to be fed on the CTRL diet while the remaining groups were exposed to DSS, including CTRL-D (CTRL + DSS), BG-D (BG + DSS), and CUR-D (CUR + DSS), for 6 days. Growth, plasma and gut humoral immunity, liver and gut oxidative stress biomarkers, and intestinal gene expression were evaluated. No significant differences were found in growth after 30 days of feeding; however, seabream fed BG had decreased anti-protease activity and nitric oxide concentration in plasma while those fed CUR had increased mRNA levels of the tnfα, csf1r, and hep genes compared to those fed CTRL. After the inflammatory stimulus, hematocrit was enhanced in fish fed BG-D and CUR-D while red blood cell counts increased in those fed CTRL-D. Superoxide dismutase activity decreased in the intestine of all DSS groups while lipid peroxidation increased in the gut of fish fed CTRL-D and BG-D compared to CTRL. Moreover, the mRNA expression levels of csfr1 and sod decreased in fish fed CTRL-D and BG-D compared to CTRL, respectively. Despite the mild intestinal inflammatory condition induced by DSS, CUR was able to partially ameliorate its effects, improving the hematological profile and assisting against the oxidative stress.
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Nazario LR, de Sousa JS, de Moraes Silveira FS, Costa KM, de Oliveira GMT, Bogo MR, da Silva RS. Participation of ecto-5'-nucleotidase in the inflammatory response in an adult zebrafish (Danio rerio) model. Comp Biochem Physiol C Toxicol Pharmacol 2022; 260:109402. [PMID: 35779837 DOI: 10.1016/j.cbpc.2022.109402] [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: 04/01/2022] [Revised: 06/20/2022] [Accepted: 06/26/2022] [Indexed: 11/17/2022]
Abstract
The ecto-5'-nucleotidase is an important source of adenosine in the extracellular medium. Adenosine modulation appears early in evolution and performs several biological functions, including a role as an anti-inflammatory molecule. Here, we evaluate the activity and mRNA expression of ecto-5'-nucleotidase in response to lipopolysaccharide (LPS) using zebrafish as a model. Adult zebrafish were injected with LPS (10 μg/g). White blood cell differential counts, inflammatory markers, and ecto-5'-nucleotidase activity and expression in the encephalon, kidney, heart, and intestine were evaluated at 2, 12, and 24 h post-injection (hpi). At 2 hpi of LPS, an increase in neutrophils and monocytes in peripheral blood was observed, which was accompanied by increased tnf-α expression in the heart, kidney, and encephalon, and increased cox-2 expression in the intestine and kidney. At 12 hpi, monocytes remained elevated in the peripheral blood, while tnf-α expression was also increased in the intestine. At 24 hpi, the white blood cell differential count no longer differed from that of the control, whereas tnf-α expression remained elevated in the encephalon but reduced in the kidney compared with the controls. AMP hydrolysis in LPS-treated animals was increased in the heart at 24 hpi [72 %; p = 0.029] without affecting ecto-5'-nucleotidase gene expression. These data indicate that, in most tissues studied, inflammation does not affect ecto-5'-nucleotidase activity, whereas in the heart, a delayed increase in ecto-5'-nucleotidase activity could be related to tissue repair.
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Affiliation(s)
- Luiza Reali Nazario
- Laboratório de Neuroquímica e Psicofarmacologia, Escola de Ciências da Saúde e da Vida, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Avenida Ipiranga, 6681, Caixa Postal 1429, 90619-900 Porto Alegre, RS, Brazil
| | - Jéssica Streb de Sousa
- Laboratório de Neuroquímica e Psicofarmacologia, Escola de Ciências da Saúde e da Vida, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Avenida Ipiranga, 6681, Caixa Postal 1429, 90619-900 Porto Alegre, RS, Brazil
| | - Francielle Schroeder de Moraes Silveira
- Laboratório de Neuroquímica e Psicofarmacologia, Escola de Ciências da Saúde e da Vida, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Avenida Ipiranga, 6681, Caixa Postal 1429, 90619-900 Porto Alegre, RS, Brazil
| | - Kesiane Mayra Costa
- Laboratório de Biologia Genômica e Molecular, Escola de Ciências da Saúde e Vida, PUCRS, Caixa Postal 1429, 90619-900 Porto Alegre, RS, Brazil
| | | | - Maurício Reis Bogo
- Laboratório de Biologia Genômica e Molecular, Escola de Ciências da Saúde e Vida, PUCRS, Caixa Postal 1429, 90619-900 Porto Alegre, RS, Brazil
| | - Rosane Souza da Silva
- Laboratório de Neuroquímica e Psicofarmacologia, Escola de Ciências da Saúde e da Vida, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Avenida Ipiranga, 6681, Caixa Postal 1429, 90619-900 Porto Alegre, RS, Brazil.
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4
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Zhang X, Akhtar M, Chen Y, Ma Z, Liang Y, Shi D, Cheng R, Cui L, Hu Y, Nafady AA, Ansari AR, Abdel-Kafy ESM, Liu H. Chicken jejunal microbiota improves growth performance by mitigating intestinal inflammation. MICROBIOME 2022; 10:107. [PMID: 35836252 PMCID: PMC9284917 DOI: 10.1186/s40168-022-01299-8] [Citation(s) in RCA: 39] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Accepted: 06/05/2022] [Indexed: 12/11/2022]
Abstract
Background Intestinal inflammation is prevalent in chicken, which results in decreased growth performance and considerable economic losses. Accumulated findings established the close relationship between gut microbiota and chicken growth performance. However, whether gut microbiota impacts chicken growth performance by lessening intestinal inflammation remains elusive. Results Seven-weeks-old male and female chickens with the highest or lowest body weights were significantly different in breast and leg muscle indices and average cross-sectional area of muscle cells. 16S rRNA gene sequencing indicated Gram-positive bacteria, such as Lactobacilli, were the predominant species in high body weight chickens. Conversely, Gram-negative bacteria, such as Comamonas, Acinetobacter, Brucella, Escherichia-Shigella, Thermus, Undibacterium, and Allorhizobium-Neorhizobium-Pararhizobium-Rhizobium were significantly abundant in low body weight chickens. Serum lipopolysaccharide (LPS) level was significantly higher in low body weight chickens (101.58 ± 5.78 ng/mL) compared with high body weight chickens (85.12 ± 4.79 ng/mL). The expression of TLR4, NF-κB, MyD88, and related inflammatory cytokines in the jejunum was significantly upregulated in low body weight chickens, which led to the damage of gut barrier integrity. Furthermore, transferring fecal microbiota from adult chickens with high body weight into 1-day-old chicks reshaped the jejunal microbiota, mitigated inflammatory response, and improved chicken growth performance. Conclusions Our findings suggested that jejunal microbiota could affect chicken growth performance by mitigating intestinal inflammation. Video Abstract
Supplementary Information The online version contains supplementary material available at 10.1186/s40168-022-01299-8.
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Affiliation(s)
- Xiaolong Zhang
- Department of Basic Veterinary Medicine, College of Animal Science and Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, Hubei, China
| | - Muhammad Akhtar
- Department of Basic Veterinary Medicine, College of Animal Science and Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, Hubei, China
| | - Yan Chen
- Department of Basic Veterinary Medicine, College of Animal Science and Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, Hubei, China
| | - Ziyu Ma
- Department of Basic Veterinary Medicine, College of Animal Science and Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, Hubei, China
| | - Yuyun Liang
- Department of Basic Veterinary Medicine, College of Animal Science and Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, Hubei, China
| | - Deshi Shi
- Department of Preventive Veterinary Medicine, College of Animal Science and Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, Hubei, China
| | - Ranran Cheng
- Department of Basic Veterinary Medicine, College of Animal Science and Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, Hubei, China
| | - Lei Cui
- Department of Basic Veterinary Medicine, College of Animal Science and Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, Hubei, China
| | - Yafang Hu
- Department of Basic Veterinary Medicine, College of Animal Science and Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, Hubei, China
| | - Abdallah A Nafady
- Department of Basic Veterinary Medicine, College of Animal Science and Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, Hubei, China
| | - Abdur Rahman Ansari
- Department of Basic Veterinary Medicine, College of Animal Science and Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, Hubei, China.,Section of Anatomy and Histology, Department of Basic Sciences, College of Veterinary and Animal Sciences (CVAS) Jhang, University of Veterinary and Animal Sciences (UVAS), Lahore, Pakistan
| | - El-Sayed M Abdel-Kafy
- Animal Production Research Institute (APRI), Agricultural Research Center (ARC), Ministry of Agriculture, Giza, Egypt
| | - Huazhen Liu
- Department of Basic Veterinary Medicine, College of Animal Science and Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, Hubei, China.
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5
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An Overview of Zebrafish Modeling Methods in Drug Discovery and Development. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2021; 1387:145-169. [PMID: 34961915 DOI: 10.1007/5584_2021_684] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Animal studies are recognized as a significant step forward in the bridging between drug discovery and clinical applications. Animal models, due to their relative genetic, molecular, physiological, and even anatomical similarities to humans, can provide a suitable platform for unraveling the mechanisms underlying human diseases and discovering new therapeutic approaches as well. Recently, zebrafish has attracted attention as a valuable experimental and pharmacological model in drug discovery and development studies due to its prominent characteristics such as the high degree of genetic similarity with humans, genetic manipulability, and prominent clinical features. Since advancing a theory to a valid and reliable observation requires the manipulation of animals, it is, therefore, essential to use efficient modeling methods appropriate to the different aspects of experimental conditions. In this context, applying several various approaches such as using chemicals, pathogens, and genetic manipulation approaches allows zebrafish development into a preferable model that mimics some human disease pathophysiology. Thus, such modeling approaches not only can provide a framework for a comprehensive understanding of the human disease mechanisms that have a counterpart in zebrafish but also can pave the way for discovering new drugs that are accompanied by higher amelioration effects on different human diseases.
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6
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Morales Fénero C, Amaral MA, Xavier IK, Padovani BN, Paredes LC, Takiishi T, Lopes-Ferreira M, Lima C, Colombo A, Saraiva Câmara NO. Short chain fatty acids (SCFAs) improves TNBS-induced colitis in zebrafish. CURRENT RESEARCH IN IMMUNOLOGY 2021; 2:142-154. [PMID: 35492385 PMCID: PMC9040093 DOI: 10.1016/j.crimmu.2021.08.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 08/25/2021] [Accepted: 08/25/2021] [Indexed: 12/20/2022] Open
Abstract
The short-chain fatty acids (SCFAs) are metabolites originated from the fermentation of dietary fibers and amino acids produced by the bacteria of the intestinal microbiota. The most abundant SCFAs, acetate, propionate, and butyrate, have been proposed as a treatment for inflammatory bowel diseases (IBDs) due to their anti-inflammatory properties. This work aimed to analyze the effects of the treatment of three combined SCFAs in TNBS-induced intestinal inflammation in zebrafish larvae. Here, we demonstrated that SCFAs significantly increased the survival of TNBS-exposed larvae, preserved the intestinal endocytic function, reduced the expression of inflammatory cytokines and the intestinal recruitment of neutrophils caused by TNBS. However, SCFAs treatment did not appear to avoid TNBS-induced tissue damage in the intestinal wall and did not restore the number of mucus-producing goblet cells. Finally, exposure to TNBS induced dysbiosis of the microbiota with an increase in Betaproteobacteria and Actinobacteria, while the treatment with SCFAs maintained these population levels similar to control. Thus, we demonstrate that the treatment of three combined SCFAs presented anti-inflammatory properties previously seen in mammals, opening an opportunity to use zebrafish to explore the potential benefit of these and other metabolites to treat inflammation.
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Affiliation(s)
- Camila Morales Fénero
- Department of Immunology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | | | - Izabella Karina Xavier
- Department of Immunology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Barbara Nunes Padovani
- Department of Immunology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Lais Cavalieri Paredes
- Department of Immunology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Tatiana Takiishi
- ULB Center for Diabetes Research, Medical Faculty, Université Libre de Bruxelles, Brussels, Belgium
| | - Mônica Lopes-Ferreira
- Center of Toxins, Immune Response and Cellular Signalling (CeTICS), Instituto Butantan, São Paulo, Brazil
| | - Carla Lima
- Center of Toxins, Immune Response and Cellular Signalling (CeTICS), Instituto Butantan, São Paulo, Brazil
| | - Alicia Colombo
- Department of Pathologic Anatomy, Faculty of Medicine, University of Chile, Santiago, Chile
| | - Niels Olsen Saraiva Câmara
- Department of Immunology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
- Department of Medicine, Nephrology Division, Federal University of São Paulo, Brazil
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7
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Eto SF, Fernandes DC, Funnicelli MIG, Alecrim JVC, Souza PG, Carvalho FCA, Belo MAA, Pizauro JM. Microglia extracellular traps in Oreochromis niloticus infected with Weissella cibaria. FISH & SHELLFISH IMMUNOLOGY 2021; 113:148-153. [PMID: 33838222 DOI: 10.1016/j.fsi.2021.03.020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Revised: 03/08/2021] [Accepted: 03/29/2021] [Indexed: 06/12/2023]
Abstract
The mechanism of extracellular traps (ETs) is important in the cellular response against bacteria. Thus, in the present study, we describe for the first time the capacity of the Nile tilapia (Oreochromis niloticus) microglia in the formation of ETs in Weissella cibaria in vitro infection. Thus, we evaluated the ultrastructure of the microglia culture and observed the formation of ETs 6 h after stimulation with lipopolysaccharide (LPS) and during the course of infection. Our results shed light on the mechanism of formation of ETs in the microglia of teleost fish and the ability of W. cibaria to infect these cells.
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Affiliation(s)
- Silas F Eto
- Department of Postgraduate in Health Sciences-PROCISA, Federal University of Roraima (UFRR), 69310-000, Boa Vista, Brazil.
| | - Dayanne C Fernandes
- Immunochemistry Laboratory, Butantan Institute, (CeTICS/FAPESP), 05503-900, São Paulo, Brazil
| | - Michelli I G Funnicelli
- Department of Technology, School of Agrarian and Veterinary Sciences, Sao Paulo State University (Unesp), 14884-900, Jaboticabal, São Paulo, Brazil
| | - João V C Alecrim
- Department of Postgraduate in Health Sciences-PROCISA, Federal University of Roraima (UFRR), 69310-000, Boa Vista, Brazil
| | - Pedro G Souza
- Department of Postgraduate in Health Sciences-PROCISA, Federal University of Roraima (UFRR), 69310-000, Boa Vista, Brazil
| | - Fabíola C A Carvalho
- Department of Postgraduate in Health Sciences-PROCISA, Federal University of Roraima (UFRR), 69310-000, Boa Vista, Brazil
| | - Marco A A Belo
- Laboratory of Animal Pharmacology and Toxicology, University of Brazil, 13690-000, Descalvado, Brazil; Department of Preventive Veterinary Medicine of Unesp, School of Agrarian and Veterinary Sciences, São Paulo State University (Unesp), 14884-900, Jaboticabal, Brazil
| | - João M Pizauro
- Department of Technology, School of Agrarian and Veterinary Sciences, Sao Paulo State University (Unesp), 14884-900, Jaboticabal, São Paulo, Brazil
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8
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Zhao Y, Qiao R, Zhang S, Wang G. Metabolomic profiling reveals the intestinal toxicity of different length of microplastic fibers on zebrafish (Danio rerio). JOURNAL OF HAZARDOUS MATERIALS 2021; 403:123663. [PMID: 33264870 DOI: 10.1016/j.jhazmat.2020.123663] [Citation(s) in RCA: 114] [Impact Index Per Article: 38.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Revised: 07/28/2020] [Accepted: 07/30/2020] [Indexed: 05/23/2023]
Abstract
To explore the intestinal toxicity of microplastic fibers, zebrafish larvae and adults were exposed to different length of microplastic fibers (50 ± 26 μm and 200 ± 90 μm). After exposure, microplastic fibers were observed in the gut of zebrafish even at the early life stage, causing length-dependent intestinal damage and toxicities manifested by histopathological changes and biomarker responses. Long microplastic fibers induced more serious effects. They significantly decreased the food intake of zebrafish by 54 %-67 % compared with short microplastic fibers. Metabolomics was conducted to further reveal the metabolic alterations induced by microplastic fibers in zebrafish. A total of 124 and 123 metabolites were significantly changed by short and long microplastic fibers. At the meanwhile, 41 significantly changed metabolites were shared between short and long fibers treatment groups and were further investigated to reveal the influence of fiber length on the toxicity. The results demonstrate that microplastic fibers can up-regulate glycerophospholipids metabolism which exacerbates oxidative damage and inflammation and down-regulate fatty acyls metabolism related to nutritional deficiency. These novel findings enhance our understanding of the intestinal toxicity of microplastic fibers and demonstrate that metabolomics is powerful to unravel the underlying mechanisms of microplastics (MPs) toxicity.
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Affiliation(s)
- Yanping Zhao
- School of Environment, Nanjing Normal University, Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Jiangsu Key Laboratory of Environmental Change and Ecological Construction, Nanjing, 210023, China.
| | - Ruxia Qiao
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu, 210023, China
| | - Siyuan Zhang
- School of Environment, Nanjing Normal University, Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Jiangsu Key Laboratory of Environmental Change and Ecological Construction, Nanjing, 210023, China
| | - Guoxiang Wang
- School of Environment, Nanjing Normal University, Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Jiangsu Key Laboratory of Environmental Change and Ecological Construction, Nanjing, 210023, China
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9
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Fasolo JMMA, Vizuete AFK, Rico EP, Rambo RBS, Toson NSB, Santos E, de Oliveira DL, Gonçalves CAS, Schapoval EES, Heriques AT. Anti-inflammatory effect of rosmarinic acid isolated from Blechnum brasiliense in adult zebrafish brain. Comp Biochem Physiol C Toxicol Pharmacol 2021; 239:108874. [PMID: 32805443 DOI: 10.1016/j.cbpc.2020.108874] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 07/28/2020] [Accepted: 08/12/2020] [Indexed: 02/07/2023]
Abstract
Neuroinflammation has been associated to neurodegenerative disease development, with evidence suggesting that high levels of proinflammatory cytokines promote neuronal dysfunction and death. Therefore, it is necessary to study new compounds that may be used as adjuvant treatments of neurodegenerative diseases by attenuating the inflammatory response in the central nervous system (CNS). The aim of this study was to utilize the lipopolysaccharide (LPS) induction model of neuroinflammation to evaluate the modulation of inflammation by rosmarinic acid (RA) isolated from Blechnum brasiliense in adult zebrafish. First, we investigated the toxicity and antioxidant properties of fractionated B. brasiliense extract (ethyl acetate fraction- EAF) and the isolated RA in zebrafish embryos. Next, we developed a model of neuroinflammation induction by intraperitoneal (i.p.) injection of LPS to observe the RA modulation of proinflammatory cytokines. The median lethal concentration (LC50) calculated was 185.2 ± 1.24 μg/mL for the ethyl acetate fraction (EAF) and 296.0 ± 1.27 μM for RA. The EAF showed free radical inhibition ranging from 23.09% to 63.44% at concentrations of 10-250 μg/mL. The RA presented a concentration-dependent response ranging from 18.24% to 47.63% at 10-250 μM. Furthermore, the RA reduced LPS induction of TNF-α and IL-1β levels, with the greatest effect observed 6 h after LPS administration. Thus, the data suggested an anti-inflammatory effect of RA isolated from B. brasiliense and reinforced the utility of the new model of neuroinflammation to test the possible neuroprotective effects of novel drugs or compounds.
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Affiliation(s)
- Juliana M M A Fasolo
- Laboratório de Farmacognosia, Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul, (UFRGS), Porto Alegre, RS, Brazil
| | | | - Eduardo P Rico
- Experimental Neurology Laboratory, Graduate Program in Health Sciences, University of Southern Santa Catarina (UNESC), Criciúma, Santa Catarina, Brazil
| | - Renata B S Rambo
- Departamento do Medicamento, Faculdade de Farmácia, Universidade Federal da Bahia (UFBA), Salvador, BA, Brazil
| | - Natally S B Toson
- Laboratório de Farmacognosia, Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul, (UFRGS), Porto Alegre, RS, Brazil
| | - Emerson Santos
- Departamento de Bioquímica, UFRGS, Porto Alegre, RS, Brazil
| | | | | | - Elfrides E S Schapoval
- Laboratório de Controle de Qualidade de Medicamentos, Faculdade de Farmácia, UFRGS, Porto Alegre, RS, Brazil
| | - Amélia T Heriques
- Laboratório de Farmacognosia, Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul, (UFRGS), Porto Alegre, RS, Brazil
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10
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Rodrigues da Silva GH, Geronimo G, García-López JP, Ribeiro LNM, de Moura LD, Breitkreitz MC, Feijóo CG, de Paula E. Articaine in functional NLC show improved anesthesia and anti-inflammatory activity in zebrafish. Sci Rep 2020; 10:19733. [PMID: 33184457 PMCID: PMC7665027 DOI: 10.1038/s41598-020-76751-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Accepted: 11/02/2020] [Indexed: 02/08/2023] Open
Abstract
Anesthetic failure is common in dental inflammation processes, even when modern agents, such as articaine, are used. Nanostructured lipid carriers (NLC) are systems with the potential to improve anesthetic efficacy, in which active excipients can provide desirable properties, such as anti-inflammatory. Coupling factorial design (FD) for in vitro formulation development with in vivo zebrafish tests, six different NLC formulations, composed of synthetic (cetyl palmitate/triglycerides) or natural (avocado butter/olive oil/copaiba oil) lipids were evaluated for loading articaine. The formulations selected by FD were physicochemically characterized, tested for shelf stability and in vitro release kinetics and had their in vivo effect (anti-inflammatory and anesthetic effect) screened in zebrafish. The optimized NLC formulation composed of avocado butter, copaiba oil, Tween 80 and 2% articaine showed adequate physicochemical properties (size = 217.7 ± 0.8 nm, PDI = 0.174 ± 0.004, zeta potential = - 40.2 ± 1.1 mV, %EE = 70.6 ± 1.8) and exhibited anti-inflammatory activity. The anesthetic effect on touch reaction and heart rate of zebrafish was improved to 100 and 60%, respectively, in comparison to free articaine. The combined FD/zebrafish approach was very effective to reveal the best articaine-in-NLC formulation, aiming the control of pain at inflamed tissues.
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Affiliation(s)
- Gustavo H Rodrigues da Silva
- Department of Biochemistry and Tissue Biology, Institute of Biology, University of Campinas-UNICAMP, Rua Monteiro Lobato, 255, Cid. Universitária Zeferino Vaz, Campinas, São Paulo, 13083862, Brazil
| | - Gabriela Geronimo
- Department of Biochemistry and Tissue Biology, Institute of Biology, University of Campinas-UNICAMP, Rua Monteiro Lobato, 255, Cid. Universitária Zeferino Vaz, Campinas, São Paulo, 13083862, Brazil
| | - Juan P García-López
- Laboratory of Fish Immunology, Department of Biological Sciences, Faculty of Life Sciences, Andres Bello University, 8370146, Santiago, Chile
| | - Lígia N M Ribeiro
- Department of Biochemistry and Tissue Biology, Institute of Biology, University of Campinas-UNICAMP, Rua Monteiro Lobato, 255, Cid. Universitária Zeferino Vaz, Campinas, São Paulo, 13083862, Brazil
| | - Ludmilla D de Moura
- Department of Biochemistry and Tissue Biology, Institute of Biology, University of Campinas-UNICAMP, Rua Monteiro Lobato, 255, Cid. Universitária Zeferino Vaz, Campinas, São Paulo, 13083862, Brazil
| | - Márcia C Breitkreitz
- Department of Analytical Chemistry, Institute of Chemistry, UNICAMP, Campinas, São Paulo, Brazil
| | - Carmen G Feijóo
- Laboratory of Fish Immunology, Department of Biological Sciences, Faculty of Life Sciences, Andres Bello University, 8370146, Santiago, Chile.
| | - Eneida de Paula
- Department of Biochemistry and Tissue Biology, Institute of Biology, University of Campinas-UNICAMP, Rua Monteiro Lobato, 255, Cid. Universitária Zeferino Vaz, Campinas, São Paulo, 13083862, Brazil.
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11
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Zampieri RM, Adessi A, Caldara F, Codato A, Furlan M, Rampazzo C, De Philippis R, La Rocca N, Dalla Valle L. Anti-Inflammatory Activity of Exopolysaccharides from Phormidium sp. ETS05, the Most Abundant Cyanobacterium of the Therapeutic Euganean Thermal Muds, Using the Zebrafish Model. Biomolecules 2020; 10:biom10040582. [PMID: 32290043 PMCID: PMC7226003 DOI: 10.3390/biom10040582] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 04/04/2020] [Accepted: 04/06/2020] [Indexed: 12/19/2022] Open
Abstract
The Euganean Thermal District (Italy) represents the oldest and largest thermal center in Europe, and its therapeutic mud is considered a unique product whose beneficial effects have been documented since Ancient Roman times. Mud properties depend on the heat and electrolytes of the thermal water, as well as on the bioactive molecules produced by its biotic component, mainly represented by cyanobacteria. The investigation of the healing effects of compounds produced by the Euganean cyanobacteria represents an important goal for scientific validation of Euganean mud therapies and for the discovering of new health beneficial biomolecules. In this work, we evaluated the therapeutic potential of exopolysaccharides (EPS) produced by Phormidium sp. ETS05, the most abundant cyanobacterium of the Euganean mud. Specifically, Phormidium EPS resulted in exerting anti-inflammatory and pro-resolution activities in chemical and injury-induced zebrafish inflammation models as demonstrated using specific transgenic zebrafish lines and morphometric and expression analyses. Moreover, in vivo and in vitro tests showed no toxicity at all for the EPS concentrations tested. The results suggest that these EPS, with their combined anti-inflammatory and pro-resolution activities, could be one of the most important therapeutic molecules present in the Euganean mud and confirm the potential of these treatments for chronic inflammatory disease recovery.
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Affiliation(s)
- Raffaella Margherita Zampieri
- Department of Biology, University of Padova, Via U. Bassi 58/b, 35131 Padova, Italy; (R.M.Z.); (A.C.); (M.F.); (C.R.)
| | - Alessandra Adessi
- Department of Agriculture, Food, Environment and Forestry (DAGRI), University of Florence, Via Maragliano 77, 50144 Firenze, Italy; (A.A.); (R.D.P.)
| | - Fabrizio Caldara
- Pietro d’Abano Thermal Studies Center, Via Jappelli 5, Abano Terme, 35031 Padova, Italy;
| | - Alessia Codato
- Department of Biology, University of Padova, Via U. Bassi 58/b, 35131 Padova, Italy; (R.M.Z.); (A.C.); (M.F.); (C.R.)
| | - Mattia Furlan
- Department of Biology, University of Padova, Via U. Bassi 58/b, 35131 Padova, Italy; (R.M.Z.); (A.C.); (M.F.); (C.R.)
| | - Chiara Rampazzo
- Department of Biology, University of Padova, Via U. Bassi 58/b, 35131 Padova, Italy; (R.M.Z.); (A.C.); (M.F.); (C.R.)
| | - Roberto De Philippis
- Department of Agriculture, Food, Environment and Forestry (DAGRI), University of Florence, Via Maragliano 77, 50144 Firenze, Italy; (A.A.); (R.D.P.)
| | - Nicoletta La Rocca
- Department of Biology, University of Padova, Via U. Bassi 58/b, 35131 Padova, Italy; (R.M.Z.); (A.C.); (M.F.); (C.R.)
- Correspondence: (N.L.R.); (L.D.V.)
| | - Luisa Dalla Valle
- Department of Biology, University of Padova, Via U. Bassi 58/b, 35131 Padova, Italy; (R.M.Z.); (A.C.); (M.F.); (C.R.)
- Correspondence: (N.L.R.); (L.D.V.)
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12
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Sun J, Huang X, Ji S, Ji H. Two faces of PPARα/NFκB signaling pathway in inflammatory responses to adipocytes lipolysis in grass carp Ctenopharyngodon idella. FISH & SHELLFISH IMMUNOLOGY 2019; 90:244-249. [PMID: 31029776 DOI: 10.1016/j.fsi.2019.04.062] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Revised: 04/18/2019] [Accepted: 04/24/2019] [Indexed: 06/09/2023]
Abstract
Adipose tissue plays an important role in energy reservation, also be considered as vital immunological organ in animals. Adipocytes are the basic unit of adipose tissue, while little is known about the relationship between lipid metabolism and inflammatory response in fish adipocytes so far. In this study, forskolin was used to induce adipocyte lipolysis, and 5 μM forskolin and 30 μM forskolin both triggered lipolysis by increasing ATGL expression. Consequently, 30 μM Forskolin instead of 5 μM Forskolin induced the expression of NF-κB and its target pro-inflammatory cytokine genes including MCP-1, IL-6 and TNF-α. Further study found that low grade rate of lipolysis activated PPARα gene, and its inhibitory effect on the mRNA expression of NF-κB and its target genes inhibited the adipocyte inflammation. On the contrary, high grade rate of lipolysis increased the expression levels of NF-κB and its target genes, while their expression were attenuated by inhibition of reactive oxygen species (ROS) using α-tocopherol, suggesting that ROS generated due to the PPARα-mediated oxidation of released fatty acids from lipolysis may contribute to adipocyte inflammation. These results indicated that PPARα has dose effect in inflammatory responses to adipocyte lipolysis in grass carp. Taken together, grass carp adipocytes have immune activity. The inflammatory response is linked to the grade rate of adipocyte lipolysis in grass carp adipocytes, and excessive adipocyte lipolysis may promote a dynamic immune response in adipose tissue. This is the first study showing the regulatory effects of lipolysis on immune functions in fish adipocytes.
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Affiliation(s)
- Jian Sun
- College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, China
| | - XiaoCheng Huang
- College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, China
| | - ShangHong Ji
- College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, China
| | - Hong Ji
- College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, China.
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13
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Wen Y, Chen S, Jiang Z, Wang Z, Tan J, Hu T, Wang Q, Zhou X, Zhang Y, Liu Q, Yang D. Dysregulated haemolysin promotes bacterial outer membrane vesicles-induced pyroptotic-like cell death in zebrafish. Cell Microbiol 2019; 21:e13010. [DOI: 10.1111/cmi.13010] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Revised: 11/29/2018] [Accepted: 01/04/2019] [Indexed: 12/17/2022]
Affiliation(s)
- Ying Wen
- State Key Laboratory of Bioreactor Engineering; East China University of Science and Technology; Shanghai China
| | - Shouwen Chen
- State Key Laboratory of Bioreactor Engineering; East China University of Science and Technology; Shanghai China
| | - Zhiwei Jiang
- State Key Laboratory of Bioreactor Engineering; East China University of Science and Technology; Shanghai China
| | - Zhuang Wang
- State Key Laboratory of Bioreactor Engineering; East China University of Science and Technology; Shanghai China
| | - Jinchao Tan
- State Key Laboratory of Bioreactor Engineering; East China University of Science and Technology; Shanghai China
| | - Tianjian Hu
- State Key Laboratory of Bioreactor Engineering; East China University of Science and Technology; Shanghai China
| | - Qiyao Wang
- State Key Laboratory of Bioreactor Engineering; East China University of Science and Technology; Shanghai China
- Laboratory for Marine Biology and Biotechnology; Qingdao National Laboratory for Marine Science and Technology; Qingdao China
- Shanghai Collaborative Innovation Center for Biomanufacturing; Shanghai China
- Shanghai Engineering Research Center of Marine Cultured Animal Vaccines; Shanghai China
| | - Xiangshan Zhou
- State Key Laboratory of Bioreactor Engineering; East China University of Science and Technology; Shanghai China
| | - Yuanxing Zhang
- State Key Laboratory of Bioreactor Engineering; East China University of Science and Technology; Shanghai China
- Shanghai Collaborative Innovation Center for Biomanufacturing; Shanghai China
- Shanghai Engineering Research Center of Marine Cultured Animal Vaccines; Shanghai China
| | - Qin Liu
- State Key Laboratory of Bioreactor Engineering; East China University of Science and Technology; Shanghai China
- Laboratory for Marine Biology and Biotechnology; Qingdao National Laboratory for Marine Science and Technology; Qingdao China
- Shanghai Collaborative Innovation Center for Biomanufacturing; Shanghai China
- Shanghai Engineering Research Center of Marine Cultured Animal Vaccines; Shanghai China
| | - Dahai Yang
- State Key Laboratory of Bioreactor Engineering; East China University of Science and Technology; Shanghai China
- Shanghai Engineering Research Center of Marine Cultured Animal Vaccines; Shanghai China
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14
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Néia VBMJC, Ambrosio-Albuquerque EP, Figueiredo IDL, Silva TCD, Lewandowski V, Almeida FLAD, Ribeiro RP, Visentainer JEL, Visentainer JV. Effect of peanut addition to the cafeteria diet on adiposity and inflammation in zebrafish (Danio rerio). FOOD AGR IMMUNOL 2018. [DOI: 10.1080/09540105.2018.1445702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
Affiliation(s)
| | | | | | | | - Vanessa Lewandowski
- Department of Animal Science, State University of Maringá, Maringá, Paraná, Brazil
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15
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Cholinergic System and Oxidative Stress Changes in the Brain of a Zebrafish Model Chronically Exposed to Ethanol. Neurotox Res 2017; 33:749-758. [DOI: 10.1007/s12640-017-9816-8] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Revised: 08/17/2017] [Accepted: 09/05/2017] [Indexed: 01/09/2023]
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16
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Tandberg J, Oliver C, Lagos L, Gaarder M, Yáñez AJ, Ropstad E, Winther-Larsen HC. Membrane vesicles from Piscirickettsia salmonis induce protective immunity and reduce development of salmonid rickettsial septicemia in an adult zebrafish model. FISH & SHELLFISH IMMUNOLOGY 2017; 67:189-198. [PMID: 28600194 DOI: 10.1016/j.fsi.2017.06.015] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Revised: 06/01/2017] [Accepted: 06/05/2017] [Indexed: 06/07/2023]
Abstract
Infections caused by the facultative intracellular bacterial pathogen Piscirickettsia salmonis remains an unsolved problem for the aquaculture as no efficient treatments have been developed. As a result, substantial amounts of antibiotic have been used to limit salmonid rickettsial septicemia (SRS) disease outbreaks. The antibiotic usage has not reduced the occurrence, but lead to an increase in resistant strains, underlining the need for new treatment strategies. P. salmonis produce membrane vesicles (MVs); small spherical structures know to contain a variety of bacterial components, including proteins, lipopolysaccharides (LPS), DNA and RNA. MVs mimics' in many aspects their mother cell, and has been reported as alternative vaccine candidates. Here, MVs from P. salmonis was isolated and evaluated as a vaccine candidate against SRS in an adult zebrafish infection model. When zebrafish was immunized with MVs they were protected from subsequent challenge with a lethal dose of P. salmonis. Histological analysis showed a reduced bacterial load upon challenge in the MV immunized group, and the mRNA expression levels of several immune related genes altered, including mpeg1.1, tnfα, il1b, il10 and il6. The MVs induced the secretion of IgM upon immunization, indicating an immunogenic effect of the vesicles. Taken together, the data demonstrate a vaccine potential of MVs against P. salmonis.
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Affiliation(s)
- Julia Tandberg
- Center of Integrative Microbiology and Evolution, University of Oslo, Oslo, Norway; Department of Pharmaceutical Biosciences, School of Pharmacy, University of Oslo, Oslo, Norway
| | - Cristian Oliver
- Institute of Biochemistry and Microbiology, Faculty of Science, Universidad Austral de Chile, Valdivia, Chile; Department of Biological Science, Faculty of Biological Science, Universidad Andrés Bello, Santiago, Chile; Interdisciplinary Center for Aquaculture Research (INCAR), Concepción, Chile
| | - Leidy Lagos
- Center of Integrative Microbiology and Evolution, University of Oslo, Oslo, Norway; Department of Pharmaceutical Biosciences, School of Pharmacy, University of Oslo, Oslo, Norway
| | - Mona Gaarder
- Department of Pharmaceutical Biosciences, School of Pharmacy, University of Oslo, Oslo, Norway
| | - Alejandro J Yáñez
- Institute of Biochemistry and Microbiology, Faculty of Science, Universidad Austral de Chile, Valdivia, Chile; Interdisciplinary Center for Aquaculture Research (INCAR), Concepción, Chile; Austral-OMICS, Faculty of Science, Universidad Austral de Chile, Valdivia, Chile
| | - Erik Ropstad
- Department of Production Animal Clinical Sciences, Faculty of Veterinary Medicine and Biosciences, Norwegian University of Life Sciences, Oslo, Norway
| | - Hanne C Winther-Larsen
- Center of Integrative Microbiology and Evolution, University of Oslo, Oslo, Norway; Department of Pharmaceutical Biosciences, School of Pharmacy, University of Oslo, Oslo, Norway.
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17
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Mehrdana F, Kania PW, Nazemi S, Buchmann K. Immunomodulatory effects of excretory/secretory compounds from Contracaecum osculatum larvae in a zebrafish inflammation model. PLoS One 2017; 12:e0181277. [PMID: 28742146 PMCID: PMC5524353 DOI: 10.1371/journal.pone.0181277] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Accepted: 06/28/2017] [Indexed: 02/04/2023] Open
Abstract
Excretory/secretory (ES) compounds isolated from third-stage larvae of the anisakid nematode Contracaecum osculatum parasitizing liver of Baltic cod were investigated for effects on immune gene expression in a zebrafish LPS-induced inflammation model. ES products containing a series of proteins, of which some had enzymatic activity, were injected solely or with LPS. ES proteins alone induced up-regulation of a number of immune-related genes, but generally to a lower degree compared to LPS. When co-injected with LPS, the worm products exacerbated merely expression of five genes affecting Th1, Th2, Th17 and innate responses compared to the LPS-injected group. However, the level of overexpression decreased in an inverse dose-dependent manner. The immune regulating action of C. osculatum ES products is interpreted as an important evolutionary ability of larval parasites in the transport host which makes it less susceptible to host immune responses whereby the probability of reaching the final host is increased.
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Affiliation(s)
- Foojan Mehrdana
- Laboratory of Aquatic Pathobiology, Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Frederiksberg C, Denmark
- * E-mail:
| | - Per Walter Kania
- Laboratory of Aquatic Pathobiology, Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Frederiksberg C, Denmark
| | - Sasan Nazemi
- Section of Experimental Animal Models, Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Frederiksberg C, Denmark
| | - Kurt Buchmann
- Laboratory of Aquatic Pathobiology, Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Frederiksberg C, Denmark
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