1
|
Khieokhajonkhet A, Suwannalers P, Aeksiri N, Kannika K, Kaneko G, Ratanasut K, Tatsapong P, Inyawilert W, Phromkunthong W. Effects of dietary Hericium erinaceus extract on growth, nutrient utilization, hematology, expression of genes related immunity response, and disease resistance of Nile tilapia (Oreochromis niloticus). FISH PHYSIOLOGY AND BIOCHEMISTRY 2024:10.1007/s10695-024-01399-2. [PMID: 39240421 DOI: 10.1007/s10695-024-01399-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Accepted: 08/25/2024] [Indexed: 09/07/2024]
Abstract
In recent years, there has been a growing focus on using herbal extracts as immune enhancers for aquatic species, replacing antibiotics. In the present study, the effects of dietary supplementation of Hericium erinaceus extract (HE) on growth, feed utilization, hematology, expression of immunity-related genes, and immune responses in Nile tilapia infected by Streptococcus agalactiae were examined. A total of 240 Nile tilapia with an average body weight of 17.28 ± 0.01 g were fed diets enriched with different levels of HE: 0 (HE0), 0.1 (HE0.1), 1.0 (HE1.0), and 5.0 (HE5.0) g/kg. The results showed that growth parameters, feed conversion ratio, and organosomatic indexes were not linearly or quadratically affected by HE supplementation. Fish fed HE0.1 and HE1.0 increased protein efficiency ratio and protein productive values with significant linear and quadratic effects of HE enrichment. In addition, dietary supplementation of HE quadratically increased whole-body protein content. Red blood cell, white blood cell, and hematocrit were linearly and quadratically increased by HE supplementation. HE also linearly and quadratically decreased LDL cholesterol and linearly decreased the total cholesterol levels. Stress markers, serum glucose, and cortisol levels were linearly and/or quadratically decreased in HE-fed fish. The relative mRNA expression of tnf-α, il-1β, il-6, and il-10 were upregulated in the HE0.1 and HE1.0 groups, while dietary supplementation of HE significantly decreased hsp70cb1 mRNA expression in all groups. After feeding dietary HE supplementation for 10 weeks, fish were intraperitoneally injected with pathogenic S. agalactiae. A high survival after challenge was found in all HE supplementation groups with the highest percent survival observed in the HE1.0 and HE5.0 groups. Our findings represent that supplementation of 1 g/kg of HE (HE1.0) could obtain the greatest effects on immunity and survival of Nile tilapia. In addition, the present study also showed that dietary supplementation of HE can improve protein utilization, hematology, expression of genes related to immunity, stress markers, and resistance of Nile tilapia against pathogenic bacterial infection.
Collapse
Affiliation(s)
- Anurak Khieokhajonkhet
- Center of Excellent in Research for Agricultural Biotechnology, Department of Agricultural Science, Faculty of Agriculture, Natural Resources, and Environment, Naresuan University, 99 M. 1, T. Thapo, A. Muang, Phitsanulok, 65000, Phitsanulok Province, Thailand.
| | - Piluntasoot Suwannalers
- Faculty of Agriculture Technology, Chiang Mai Rajabhat University, Chiang Mai, 50300, Thailand
| | - Niran Aeksiri
- Center of Excellent in Research for Agricultural Biotechnology, Department of Agricultural Science, Faculty of Agriculture, Natural Resources, and Environment, Naresuan University, 99 M. 1, T. Thapo, A. Muang, Phitsanulok, 65000, Phitsanulok Province, Thailand
| | - Korntip Kannika
- School of Agriculture and Natural Resources, University of Phayao, Mae Ka, Phayao, 56000, Thailand
| | - Gen Kaneko
- College of Natural and Applied Science, University of Houston-Victoria, 3007 N. Ben Wilson, Victoria, TX, 77901, USA
| | - Kumrop Ratanasut
- Center of Excellent in Research for Agricultural Biotechnology, Department of Agricultural Science, Faculty of Agriculture, Natural Resources, and Environment, Naresuan University, 99 M. 1, T. Thapo, A. Muang, Phitsanulok, 65000, Phitsanulok Province, Thailand
| | - Pattaraporn Tatsapong
- Center of Excellent in Research for Agricultural Biotechnology, Department of Agricultural Science, Faculty of Agriculture, Natural Resources, and Environment, Naresuan University, 99 M. 1, T. Thapo, A. Muang, Phitsanulok, 65000, Phitsanulok Province, Thailand
| | - Wilasinee Inyawilert
- Center of Excellent in Research for Agricultural Biotechnology, Department of Agricultural Science, Faculty of Agriculture, Natural Resources, and Environment, Naresuan University, 99 M. 1, T. Thapo, A. Muang, Phitsanulok, 65000, Phitsanulok Province, Thailand
| | - Wutiporn Phromkunthong
- Kidchakan Supamattaya Aquatic Animal Health Research Center, Department of Aquatic Science and Innovative Management Division, Faculty of Natural Resources, Prince of Songkla University, Songkhla, 90112, Thailand
| |
Collapse
|
2
|
Abou-Okada M, Rashad MM, Ali GE, Abdel-Radi S, Hassan A. Oxidative stress, gene expression and histopathology of cultured gilthead sea bream (Sparus aurata) naturally co-infected with Ergasilus sieboldi and Vibrio alginolyticus. BMC Vet Res 2023; 19:277. [PMID: 38104092 PMCID: PMC10724927 DOI: 10.1186/s12917-023-03840-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Accepted: 12/01/2023] [Indexed: 12/19/2023] Open
Abstract
BACKGROUND Parasitic and bacterial co-infections have been associated with increasing fish mortalities and severe economic losses in aquaculture through the past three decades. The aim of this study was to evaluate the oxidative stress, histopathology, and immune gene expression profile of gilthead sea bream (Sparus aurata) co-infected with Ergasilus sieboldi and Vibrio alginolyticus. RESULTS Vibrio alginolyticus and Ergasilus sieboldi were identified using 16 S rRNA and 28 S rRNA sequencing, respectively. The collagenase virulence gene was found in all Vibrio alginolyticus isolates, and the multiple antimicrobial resistance index ranged from 0.286 to 0.857. Oxidant-antioxidant parameters in the gills, skin, and muscles of naturally infected fish revealed increased lipid peroxidation levels and a decrease in catalase and glutathione antioxidant activities. Moreover, naturally co-infected gilthead sea bream exhibited substantial up-regulation of il-1β, tnf-α, and cyp1a1. Ergasilus sieboldi encircled gill lamellae with its second antennae, exhibited severe gill architectural deformation with extensive eosinophilic granular cell infiltration. Vibrio alginolyticus infection caused skin and muscle necrosis in gilthead sea bream. CONCLUSION This study described some details about the gill, skin and muscle tissue defense mechanisms of gilthead sea bream against Ergasilus sieboldi and Vibrio alginolyticus co-infections. The prevalence of co-infections was 100%, and no resistant fish were detected. These co-infections imbalance the health status of the fish by hampering the oxidant-antioxidant mechanisms and proinflammatory/inflammatory immune genes to a more detrimental side. Our results suggest that simultaneous screening for bacterial and parasitic pathogens should be considered.
Collapse
Affiliation(s)
- Mahmoud Abou-Okada
- Department of Aquatic Animal Medicine and Management, Faculty of Veterinary Medicine, Cairo University, Giza, 12211, Egypt.
| | - Maha M Rashad
- Department of Biochemistry and Chemistry of Nutrition, Faculty of Veterinary Medicine, Cairo University, Giza, 12211, Egypt
| | - Ghada E Ali
- Department of Biochemistry and Chemistry of Nutrition, Faculty of Veterinary Medicine, Cairo University, Giza, 12211, Egypt
| | - Shimaa Abdel-Radi
- Department of Parasitology, Faculty of Veterinary Medicine, Cairo University, Giza, 12211, Egypt
| | - Azza Hassan
- Department of Pathology, Faculty of Veterinary Medicine, Cairo University, Giza, 12211, Egypt
| |
Collapse
|
3
|
Ponsrinivasan A, Uma A. Unraveling the host-parasite interaction: immune response in Oreochromis mossambicus to Cymothoa eremita (Isopoda, Cymothoidae) infection. Parasitol Res 2023; 122:3233-3242. [PMID: 37882820 DOI: 10.1007/s00436-023-08012-0] [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: 03/31/2023] [Accepted: 10/16/2023] [Indexed: 10/27/2023]
Abstract
The host immune response in Oreochromis mossambicus during natural infection with the isopod Cymothoa eremita was investigated. The naturally infected fishes were examined for enzyme profile, viz., respiratory burst activity (RBA), myeloperoxidase activity (MPO), and expression of immune-related genes, viz., toll-like receptor 22 (TLR 22), interleukin-1β (IL-1β), tumor necrosis factor α (TNF-α), complement component (C3), chemokine (CXCa), and β-actin in tissues of various organs (buccal cavity, gills and anterior kidney). Significant reduction (P < 0.05) in RBA and MPO was observed in the parasite-infected fishes when compared to the uninfected control fishes. In the buccal cavity, the expression of the immune-related genes was significantly (P < 0.05) upregulated, whereas all the genes except IL-1β were significantly (P < 0.05) upregulated in the anterior kidney. In the case of gill tissue, the expressed genes showed a varied type of regulation. The immunological responses in O. mossambicus during isopod infection have not been investigated in detail so far, and this is the first study unveiling such insights. Hence, this study will help to improve our molecular understanding of the host-immune response to parasitic isopod infection.
Collapse
Affiliation(s)
- Alagukanthasami Ponsrinivasan
- Department of Aquatic Animal Health Management, Dr. M.G.R Fisheries College and Research Institute, Ponneri, Tamil Nadu, 601204, India
| | - Arumugam Uma
- Department of Aquatic Animal Health Management, Dr. M.G.R Fisheries College and Research Institute, Ponneri, Tamil Nadu, 601204, India.
| |
Collapse
|
4
|
Nhinh DT, Hoa DT, Giang NTH, Van Van K, Dang LT, Crumlish M, Dong HT, Hoai TD. Synergistic infection of Edwardsiella ictaluri and Flavobacterium oreochromis in cage cultured tilapia (Oreochromis sp.). JOURNAL OF FISH DISEASES 2023; 46:1125-1136. [PMID: 37410863 DOI: 10.1111/jfd.13832] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2023] [Revised: 06/27/2023] [Accepted: 06/29/2023] [Indexed: 07/08/2023]
Abstract
Widespread distribution of a highly pathogenic Edwardsiella ictaluri strain in farmed tilapia in northern Vietnam has recently been reported. The subsequent investigation noticed a disease outbreak occurred at five nearby tilapia farms with floating cages, in which the clinical signs of both edwardsiellosis and columnaris diseases were observed on the same infected fish and caused 65% to 85% fish mortality. Naturally diseased fish (n = 109) were sampled from the five infected farms for bacterial identification and conducting challenge tests. The two bacteria Edwardsiella ictaluri and Flavobacterium oreochromis were identified by a combination of biochemical tests, PCR and 16SrRNA sequencing methods. Experimental challenge tests on Nile tilapia resulted in the median lethal dose (LD50 ) of E. ictaluri and F. oreochromis at 70 CFU/fish by intraperitoneal (i.p.) injection and 3.6 × 106 CFU/mL by immersion, respectively. The experimentally co-infected challenged fish exposed to LD50 doses resulted in 83% ± 6% mortality, with the infected fish exhibiting clinical signs of both edwardsiellosis and columnaris diseases, mimicking the naturally diseased fish. This finding suggests that the co-infection of E. ictaluri and F. oreochromis may interact in a synergistic manner, to enhance the overall severity of the infection and elevates the need for efficient methods to control both pathogens.
Collapse
Affiliation(s)
- Doan Thi Nhinh
- Faculty of Fisheries, Vietnam National University of Agriculture, Hanoi, Vietnam
- Research Institute for Aquaculture No 1, Bac Ninh, Vietnam
| | - Dang Thi Hoa
- Faculty of Fisheries, Vietnam National University of Agriculture, Hanoi, Vietnam
| | - Nguyen Thi Huong Giang
- Faculty of Veterinary Medicine, Vietnam National University of Agriculture, Hanoi, Vietnam
| | - Kim Van Van
- Faculty of Fisheries, Vietnam National University of Agriculture, Hanoi, Vietnam
| | - Lua Thi Dang
- Research Institute for Aquaculture No 1, Bac Ninh, Vietnam
| | - Mags Crumlish
- Institute of Aquaculture, University of Stirling, Stirling, UK
| | - Ha Thanh Dong
- Department of Food, Aquaculture and Aquatic Resources Management, Agriculture and Bioresources, School of Environment, Resources & Development (SERD), Asian Institute of Technology (AIT), Klong Luang, Thailand
| | - Truong Dinh Hoai
- Faculty of Fisheries, Vietnam National University of Agriculture, Hanoi, Vietnam
| |
Collapse
|
5
|
Šimková A, Civáňová Křížová K, Voříšková K, Vetešník L, Bystrý V, Demko M. Transcriptome Profile Analyses of Head Kidney in Roach ( Rutilus rutilus), Common Bream ( Abramis brama) and Their Hybrids: Does Infection by Monogenean Parasites in Freshwater Fish Reveal Differences in Fish Vigour among Parental Species and Their Hybrids? BIOLOGY 2023; 12:1199. [PMID: 37759598 PMCID: PMC10525477 DOI: 10.3390/biology12091199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 08/23/2023] [Accepted: 08/28/2023] [Indexed: 09/29/2023]
Abstract
Hybrid generations usually face either a heterosis advantage or a breakdown, that can be expressed by the level of parasite infection in hybrid hosts. Hybrids are less infected by parasites than parental species (especially F1 generations) or more infected than parental species (especially post-F1 generations). We performed the experiment with blood-feeding gill parasite Paradiplozoon homoion (Monogenea) infecting leuciscid species, Abramis brama and Rutilus rutilus, their F1 generation and two backcross generations. Backcross generations tended to be more parasitized than parental lines and the F1 generation. The number of differentially expressed genes (DEGs) was lower in F1 hybrids and higher in backcross hybrids when compared to each of the parental lines. The main groups of DEGs were shared among lines; however, A. brama and R. rutilus differed in some of the top gene ontology (GO) terms. DEG analyses revealed the role of heme binding and erythrocyte differentiation after infection by blood-feeding P. homoion. Two backcross generations shared some of the top GO terms, representing mostly downregulated genes associated with P. homoion infection. KEGG analysis revealed the importance of disease-associated pathways; the majority of them were shared by two backcross generations. Our study revealed the most pronounced DEGs associated with blood-feeding monogeneans in backcross hybrids, potentially (but not exclusively) explainable by hybrid breakdown. The lower DEGs reported in F1 hybrids being less parasitized than backcross hybrids is in line with the hybrid advantage.
Collapse
Affiliation(s)
- Andrea Šimková
- Department of Botany and Zoology, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic; (K.C.K.); (K.V.)
| | - Kristína Civáňová Křížová
- Department of Botany and Zoology, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic; (K.C.K.); (K.V.)
| | - Kristýna Voříšková
- Department of Botany and Zoology, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic; (K.C.K.); (K.V.)
| | - Lukáš Vetešník
- Department of Botany and Zoology, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic; (K.C.K.); (K.V.)
- Institute of Vertebrate Biology of the Czech Academy of Sciences, Květná 8, 603 65 Brno, Czech Republic; (L.V.)
| | - Vojtěch Bystrý
- Central European Institute of Technology, Masaryk University, 625 00 Brno, Czech Republic; (V.B.); (M.D.)
| | - Martin Demko
- Department of Botany and Zoology, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic; (K.C.K.); (K.V.)
- Central European Institute of Technology, Masaryk University, 625 00 Brno, Czech Republic; (V.B.); (M.D.)
| |
Collapse
|
6
|
Alhawas B, Abd El-Hamid MI, Hassan Z, Ibrahim GA, Neamat-Allah ANF, Rizk El-Ghareeb W, Alahmad BAHY, Meligy AMA, Abdel-Raheem SM, Abdel-Moez Ahmed Ismail H, Ibrahim D. Curcumin loaded liposome formulation: Enhanced efficacy on performance, flesh quality, immune response with defense against Streptococcus agalactiae in Nile tilapia (Orechromis niloticus). FISH & SHELLFISH IMMUNOLOGY 2023; 138:108776. [PMID: 37182798 DOI: 10.1016/j.fsi.2023.108776] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 04/19/2023] [Accepted: 04/24/2023] [Indexed: 05/16/2023]
Abstract
Application of novel trend comprising antioxidant phytogenics is aiming to minimize the stress related factors and associated diseases in intensive fish culturing. Today, the concept of exploiting and protecting natural antioxidants represents a paradigm shift for the aqua feed industry. Therefore, our principal goal targeting liposome as a novel nanocarrier for curcumin is directed to attain superior performance, fillet antioxidant stability and bacterial resistance in Nile tilapia. A total of 500 Nile tilapia fingerlings (average body weight, 10.27 ± 0.10 g) assigned into five experimental groups in 25 glass aquaria of 120 L capacity at the density 20 fish/aquaria. The experimental groups were supplemented with varying doses of liposomal curcumin-NPs, LipoCur-NPs (0, 5, 15, 25 and 35 mg/kg diet) were reared for 12 weeks and later Streptococcus agalactiae (S. agalactiae) challenged model was performed. Inclusion of LipoCur-NPs (25 and 35 mg/kg diet) had the most prominent impact on Nile tilapia growth rate and feed conversion ratio. The immune boosting outcomes post supplementing 35 mg/kg diet of LipoCur-NPs were evidenced by higher myeloperoxidase, lysozyme and total immunoglobulin levels. Even after 4 weeks frozen storage, LipoCur-NPs at the dose of 35 mg/kg diet prominently increased (P < 0.05) the fillet scavenging capability for free radicals (1,1-diphenyl-2-picrylhydrazyl and 2,2'-Azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) with an inverse reduction in lipid peroxidation biomarker (malondialdehyde). Notably, upregulation of GSH-Px, CAT, and SOD genes in fillet of 35 mg/kg LipoCur-NPs fed fish coordinated with higher T-AOC and lower oxidative markers (ROS and H2O2). Post S. agalactiae challenge, higher supplementation levels of LipoCur-NPs (35 mg/kg diet) greatly attenuated the expression of its vital virulence genes (cfb, fbsA and cpsA) with higher expression of Igm, CXC-chemokine and MHC genes. Concordantly, downregulation of inflammatory markers (IL-1β, TNF-α and IL-8) and upregulation of anti-inflammatory ones (IL-10 and TGF-β) were remarkably documented. Based on these findings, the innovative curcumin loaded liposome was considered a novel multitargeting alternative not only playing an imperative role in Nile tilapia growth promotion and fillet stability upon storage, but also protecting efficiently against S. agalactiae.
Collapse
Affiliation(s)
- Bassam Alhawas
- Department of Public Health, College of Veterinary Medicine, King Faisal University, P.O. Box: 400, Hofuf, Al-Ahsa, 31982, Saudi Arabia.
| | - Marwa I Abd El-Hamid
- Department of Microbiology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, 44511, Egypt.
| | - Zeinab Hassan
- Fish Disease Department, Faculty of Veterinary Medicine, Aswan University, Aswan, 81528, Egypt.
| | - Ghada A Ibrahim
- Department of Bacteriology, Animal Health Research Institute (AHRI), Ismailia Branch, Agriculture Research Center (ARC), Ismailia, 41522, Egypt.
| | - Ahmed N F Neamat-Allah
- Department of Clinical Pathology, Faculty of Veterinary Medicine, Zagazig University, 44511, Zagazig, Egypt
| | - Waleed Rizk El-Ghareeb
- Department of Public Health, College of Veterinary Medicine, King Faisal University, P.O. Box: 400, Hofuf, Al-Ahsa, 31982, Saudi Arabia; Food Control Department, Faculty of Veterinary Medicine, Zagazig University, Zagazig, 44519, Egypt.
| | - Badr Abdul-Hakim Y Alahmad
- Department of Public Health, College of Veterinary Medicine, King Faisal University, P.O. Box: 400, Hofuf, Al-Ahsa, 31982, Saudi Arabia
| | - Ahmed M A Meligy
- Department of Clinical Science, Central Lab, College of Veterinary Medicine, King Faisal University, P.O. Box: 400, Hofuf, Al-Ahsa, 31982, Saudi Arabia; Department of Physiology, Agricultural Research Center (ARC), Giza, Egypt.
| | - Sherief M Abdel-Raheem
- Department of Public Health, College of Veterinary Medicine, King Faisal University, P.O. Box: 400, Hofuf, Al-Ahsa, 31982, Saudi Arabia; Department of Animal Nutrition and Clinical Nutrition, Faculty of Veterinary Medicine, Assiut University, 71526, Assiut, Egypt.
| | - Hesham Abdel-Moez Ahmed Ismail
- Department of Public Health, College of Veterinary Medicine, King Faisal University, P.O. Box: 400, Hofuf, Al-Ahsa, 31982, Saudi Arabia; Food Hygiene Dept., Fac. of Vet. Med., Assiut Univ., Egypt.
| | - Doaa Ibrahim
- Department of Nutrition and Clinical Nutrition, Faculty of Veterinary Medicine, Zagazig University, Zagazig, 44511, Egypt.
| |
Collapse
|
7
|
Das S, Pradhan C, Pillai D. Dietary coriander (Coriandrum sativum L) oil improves antioxidant and anti-inflammatory activity, innate immune responses and resistance to Aeromonas hydrophila in Nile tilapia (Oreochromis niloticus). FISH & SHELLFISH IMMUNOLOGY 2023; 132:108486. [PMID: 36513321 DOI: 10.1016/j.fsi.2022.108486] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 10/23/2022] [Accepted: 12/07/2022] [Indexed: 06/17/2023]
Abstract
The use of essential oils (EOs) as a natural alternative to antibiotics for disease prevention strategies is gaining much interest in recent decade. Coriander (Coriandrum sativum L.) essential oil is rich in bioactive compounds like linalool and geranyl acetate which have antioxidant, anti-inflammatory and antimicrobial activities. The present work was proposed to evaluate the inclusion levels of coriander oil in tilapia feed to enhance tilapia health and resistance to bacterial infection. Five iso-nitrogenous and iso-lipidic feeds were prepared with graded levels of coriander oil (0, 0.5, 1, 1.5 and 2%). The fish were then fed with the five experimental diet twice daily for a period of 60 days in triplicate. Haemoglobin, mean corpuscular volume, mean cell haemoglobin increased significantly in the coriander oil treated groups. The thrombocyte count was more in 2% inclusion level. The superoxide dismutase activity increased significantly in all the treated groups. The feeds with 1.5 and 2% coriander oil showed increased respiratory burst and myeloperoxidase activities while lysozyme and antiprotease activities were significantly higher in 1, 1.5 and 2% dietary treatments compared to control. The survival increased in dose dependent manner post challenge with an intraperitoneal injection of Aeromonas hydrophila at a LD50 dose of 5 × 106 cfu mL-1. The feed containing 1, 1.5 and 2% of coriander oil showed 89, 100 and 100% survival respectively compared to 39% in control diet. The expression level of IgM and IL-8 increased significantly post challenge with A. hydrophila in coriander oil fed groups. The expressions of TNFα, IL-1β, TGFβ and HSP 70 genes, however, decreased significantly in the treated groups compared to control. Histopathological examination of spleen showed large melano-macrophage centers in control and 0.5% coriander fed group with signs of necrosis and vacuolation post A. hydrophila infection, whereas 1, 1.5 and 2% treated groups showed normal architecture of spleen. From the above observations it can be concluded that coriander oil with 1% incorporation in feed improves tilapia health and resistance to bacterial infection.
Collapse
Affiliation(s)
- Sweta Das
- Department of Aquatic Animal Health Management, Kerala University of Fisheries and Ocean Studies, Kochi, Kerala, India
| | - Chiranjiv Pradhan
- Department of Aquaculture, Kerala University of Fisheries and Ocean Studies, Kochi, Kerala, India
| | - Devika Pillai
- Department of Aquatic Animal Health Management, Kerala University of Fisheries and Ocean Studies, Kochi, Kerala, India.
| |
Collapse
|
8
|
Cyathocotylidae spp and motile aeromonads co-infections in farmed Nile tilapia (Oreochromis niloticus) causing mass mortality. Microb Pathog 2023; 174:105897. [PMID: 36528326 DOI: 10.1016/j.micpath.2022.105897] [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: 08/19/2022] [Revised: 11/20/2022] [Accepted: 11/21/2022] [Indexed: 12/23/2022]
Abstract
Motile aeromonads, and Cyathocotylidaespp.co-infections were identified in farmed Nile tilapia(Oreochromis niloticus) which suffering from mortalities. Moribund fish showed signs of septicemia, skin irritations, and respiratory distress. A total of 150 O. niloticus specimens showing signs of disease were collected from the affected earthmen ponds and examined. Bacteriological examination of fish samples revealed infections with motile aeromonads species. Phenotypic characteristics and phylogenetic analysis of gyrB gene sequences of aeromonads isolates identified them as Aeromonas hydrophila (12.6%), A.sobria (12.6%), and A. caviae (30.4%). Aeromonads strains harbored some virulence genes: Aer (78.62%); Hyl (60.86%); laf-A (52.17%); and Act (47.82%). The antibiogram of aeromonads showed high resistance against tetracycline (73.9%), and gentamycin (65.2%), while a high sensitivity was noticed to ciprofloxacin (82.6%),and trimethoprim/sulfamethoxazole (60.86%). Parasitological examination of fish revealed the presence of Cyathocotylidae spp. encysted metacercaria (EMC). High levels of interleukin 6 (IL-6) and cluster of differentiation 4 (CD4) were noticed in fish with parasitic and bacterial co-infection compared to those with a single infection or non-infected. Experimentally infected fish with Aeromonas spp. showed septicemic signs similar to that noticed in naturally infected tilapia with variable cumulative mortality. The study is one of the earlier reports identifying as Cyathocotylidae spp., and motile aeromonads co-infections, and their link with the exaggerated tilapia mortality which will be of value for incorporating these pathogens in the necessary management strategies to protect fish health.
Collapse
|
9
|
Saad El-Din MI, Ghobashy MA, Mansour FA, El-Shenawy NS, Gad El-Hak HN. The Biological, Histopathological, and Parasitic Abundance of Oreochromis niloticus Inhabiting Two Different Freshwater Canals. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2022; 110:23. [PMID: 36547752 PMCID: PMC9780128 DOI: 10.1007/s00128-022-03639-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Accepted: 10/21/2022] [Indexed: 06/17/2023]
Abstract
The current study aimed to assess the impact of metal pollution in water on parasitic abundance, biology, and histopathological characteristics of Oreochromis niloticus in two different freshwater habitats in the Al Sharkia government. The fish were collected from the Mueweis canal area (A) which received industrial wastewater from factories and the San El-Hagar area (B) which received agricultural and domestic wastewater. Parasitic abundance and histopathological changes in the liver and gonads were inspected. The total prevalence of parasitic infection was at the highest percentage in area B correlated with metals present in the water, in addition to severe histopathological damage to the liver and the gonads. The prevalence of parasites for different examined fish ranges from 50% for parasites in the San El-Hagar canal and 4.17% for parasites in the Muwies canal, seasonally. There were positive relationships between Fe or Zn or Mn concentrations with parasite abundance in tilapia fish collected from the San Hagar canal. Several histopathological alterations were detected in the liver and gonads of O. niloticus collected from the two canals located in the Al Sharkia province. It was concluded that the uncontrolled inputs of agricultural and domestic wastes highly altered the O. niloticus health status and the prevalence of the parasites in the investigated two areas.
Collapse
Affiliation(s)
- Marwa I Saad El-Din
- Zoology Department, Faculty of Science, Suez Canal University, Ismailia, 41522, Egypt
| | - Mahi A Ghobashy
- Zoology Department, Faculty of Science, Suez Canal University, Ismailia, 41522, Egypt
| | - Farida A Mansour
- Zoology Department, Faculty of Science, Suez Canal University, Ismailia, 41522, Egypt
| | - Nahla S El-Shenawy
- Zoology Department, Faculty of Science, Suez Canal University, Ismailia, 41522, Egypt
| | - Heba N Gad El-Hak
- Zoology Department, Faculty of Science, Suez Canal University, Ismailia, 41522, Egypt.
| |
Collapse
|
10
|
Hao J, Wang S, Wei Z, Zhang Q, Wu Z, Lin Y, Yang J, Zhang J, Zhang D, Li A. Construction of Streptococcus agalactiae sialic acid mutant and evaluation of its potential as a live attenuated vaccine in Nile tilapia (Oreochromis niloticus). J Appl Microbiol 2022; 133:2403-2416. [PMID: 35801502 DOI: 10.1111/jam.15706] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 06/07/2022] [Accepted: 07/04/2022] [Indexed: 11/28/2022]
Abstract
AIMS This study aimed to develop a live attenuated vaccine as an effective approach to prevent streptococcosis in tilapia (Oreochromis niloticus). METHODS AND RESULTS We eliminated the virulence factor, sialic acid (Sia) encoded by the neuA-D gene cluster from the Group B Streptococcus (Streptococcus agalactiae, GBS) strain WC1535, to construct Sia-deficient S. agalactiae (ΔSia) mutant by homologous recombination. Results showed that the ΔSia mutant had higher adherence to HEp-2 cells and lower resistance to RAW264.7 cell phagocytosis than the wild-type S. agalactiae. The virulence of the ΔSia mutant to tilapia dramatically decreased with no virulence recovery. The relative percent survivals (RPSs) were 50.00% and 54.50% at 30 days when challenged at the wild-type WC1535 doses of 1.0 × 107 and 5.0 × 107 CFU fish-1 , respectively, via intraperitoneal (IP) injection. The tilapia vaccinated via IP injection with the ΔSia mutant induced strong antibody agglutination titers. The expression of IL-1β, TNF-α, MHC-Iα, and MHC-IIβ could be enhanced in the intestine, spleen, and head kidney for tilapia administered with the ΔSia mutant. CONCLUSIONS GBS Sia plays a critical role in adherence to HEp-2 cells and resistance to the immune clearance of RAW264.7 cells. Moreover, the ΔSia mutant is a safe, stable, and immunogenic live attenuated vaccine candidate to protect tilapia against GBS infection. SIGNIFICANCE AND IMPACT OF STUDY The results offer more evidence of the importance of Sia in GBS and may be instructive in the control of tilapia streptococcosis.
Collapse
Affiliation(s)
- Jingwen Hao
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Shuyi Wang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China.,University of Chinese Academy of Sciences, Beijing, China
| | | | - Qianqian Zhang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
| | - Zhenbing Wu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Yaoyao Lin
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China.,University of Chinese Academy of Sciences, Beijing, China
| | | | - Jinyong Zhang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
| | - Defeng Zhang
- Key Laboratory of Fishery Drug Development, Ministry of Agriculture and Rural Affairs, Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, China
| | - Aihua Li
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China.,University of Chinese Academy of Sciences, Beijing, China
| |
Collapse
|
11
|
Khieokhajonkhet A, Aeksiri N, Ratanasut K, Kannika K, Suwannalers P, Tatsapong P, Inyawilert W, Kaneko G. Effects of dietary Hericium erinaceus powder on growth, hematology, disease resistance, and expression of genes related immune response against thermal challenge of Nile tilapia (Oreochromis niloticus). Anim Feed Sci Technol 2022. [DOI: 10.1016/j.anifeedsci.2022.115342] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
|
12
|
Cruz-Laufer AJ, Pariselle A, Jorissen MWP, Muterezi Bukinga F, Al Assadi A, Van Steenberge M, Koblmüller S, Sturmbauer C, Smeets K, Huyse T, Artois T, Vanhove MPM. Somewhere I belong: phylogeny and morphological evolution in a species-rich lineage of ectoparasitic flatworms infecting cichlid fishes. Cladistics 2022; 38:465-512. [PMID: 35488795 DOI: 10.1111/cla.12506] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2021] [Revised: 03/19/2022] [Accepted: 03/23/2022] [Indexed: 02/05/2023] Open
Abstract
A substantial portion of biodiversity has evolved through adaptive radiation. However, the effects of explosive speciation on species interactions remain poorly understood. Metazoan parasites infecting radiating host lineages could improve our knowledge because of their intimate host relationships. Yet limited molecular, phenotypic and ecological data discourage multivariate analyses of evolutionary patterns and encourage the use of discrete characters. Here, we assemble new molecular, morphological and host range data widely inferred from a species-rich lineage of parasites (Cichlidogyrus, Platyhelminthes: Monogenea) infecting cichlid fishes to address data scarcity. We infer a multimarker (28S/18S rDNA, ITS1, COI mtDNA) phylogeny of 58 of 137 species and characterize major lineages through synapomorphies inferred from mapping morphological characters. We predict the phylogenetic position of species without DNA data through shared character states, a morphological phylogenetic analysis, and a classification analysis with support vector machines. Based on these predictions and a cluster analysis, we assess the systematic informativeness of continuous characters, search for continuous equivalents for discrete characters, and suggest new characters for morphological traits not analysed to date. We also model the attachment/reproductive organ and host range evolution using the data for 136 of 137 described species and multivariate phylogenetic comparative methods (PCMs). We show that discrete characters not only can mask phylogenetic signals, but also are key for characterizing species groups. Regarding the attachment organ morphology, a divergent evolutionary regime for at least one lineage was detected and a limited morphological variation indicates host and environmental parameters affecting its evolution. However, moderate success in predicting phylogenetic positions, and a low systematic informativeness and high multicollinearity of morphological characters call for a revaluation of characters included in species characterizations.
Collapse
Affiliation(s)
- Armando J Cruz-Laufer
- Faculty of Sciences, Centre for Environmental Sciences, Research Group Zoology: Biodiversity and Toxicology, UHasselt - Hasselt University, Agoralaan Gebouw D, Diepenbeek, 3590, Belgium
| | - Antoine Pariselle
- ISEM, Université de Montpellier, CNRS, IRD, Montpellier, France.,Faculty of Sciences, Laboratory "Biodiversity, Ecology and Genome", Research Centre "Plant and Microbial Biotechnology, Biodiversity and Environment", Mohammed V University, Rabat, Morocco
| | - Michiel W P Jorissen
- Faculty of Sciences, Centre for Environmental Sciences, Research Group Zoology: Biodiversity and Toxicology, UHasselt - Hasselt University, Agoralaan Gebouw D, Diepenbeek, 3590, Belgium.,Department of Biology, Royal Museum for Central Africa, Tervuren, Belgium
| | - Fidel Muterezi Bukinga
- Section de Parasitologie, Département de Biologie, Centre de Recherche en Hydrobiologie, Uvira, Democratic Republic of the Congo
| | - Anwar Al Assadi
- Fraunhofer Institute for Manufacturing Engineering and Automation IPA, Nobelstraße 12, Stuttgart, 70569, Germany
| | - Maarten Van Steenberge
- Laboratory of Biodiversity and Evolutionary Genomics, KU Leuven, Charles Deberiotstraat 32, Leuven, B-3000, Belgium.,Operational Directorate Taxonomy and Phylogeny, Royal Belgian Institute of Natural Sciences, Vautierstraat 29, Brussels, B-1000, Belgium
| | - Stephan Koblmüller
- Institute of Biology, University of Graz, Universitätsplatz 2, Graz, 8010, Austria
| | - Christian Sturmbauer
- Institute of Biology, University of Graz, Universitätsplatz 2, Graz, 8010, Austria
| | - Karen Smeets
- Faculty of Sciences, Centre for Environmental Sciences, Research Group Zoology: Biodiversity and Toxicology, UHasselt - Hasselt University, Agoralaan Gebouw D, Diepenbeek, 3590, Belgium
| | - Tine Huyse
- Section de Parasitologie, Département de Biologie, Centre de Recherche en Hydrobiologie, Uvira, Democratic Republic of the Congo.,Laboratory of Biodiversity and Evolutionary Genomics, KU Leuven, Charles Deberiotstraat 32, Leuven, B-3000, Belgium
| | - Tom Artois
- Faculty of Sciences, Centre for Environmental Sciences, Research Group Zoology: Biodiversity and Toxicology, UHasselt - Hasselt University, Agoralaan Gebouw D, Diepenbeek, 3590, Belgium
| | - Maarten P M Vanhove
- Faculty of Sciences, Centre for Environmental Sciences, Research Group Zoology: Biodiversity and Toxicology, UHasselt - Hasselt University, Agoralaan Gebouw D, Diepenbeek, 3590, Belgium.,Laboratory of Biodiversity and Evolutionary Genomics, KU Leuven, Charles Deberiotstraat 32, Leuven, B-3000, Belgium
| |
Collapse
|
13
|
Shater AF, AlGabbani Q, Mohammedsaleh ZM, Saleh FM, AbouLaila M, Noreldin AE, Raza SHA, Ullah H, Khan R, Menshawy S. Expression of immune-related genes in parasite-infected Tilapia nilotica (Oreochromis niloticus) from Egypt and molecular characterization of the parasites. GENE REPORTS 2022. [DOI: 10.1016/j.genrep.2021.101451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
14
|
Ibrahim D, Kishawy ATY, Khater SI, Khalifa E, Ismail TA, Mohammed HA, Elnahriry SS, Tolba HA, Sherief WRIA, Farag MFM, El-Hamid MIA. Interactive effects of dietary quercetin nanoparticles on growth, flesh antioxidant capacity and transcription of cytokines and Aeromonas hydrophila quorum sensing orchestrating genes in Nile tilapia (Oreochromis niloticus). FISH & SHELLFISH IMMUNOLOGY 2021; 119:478-489. [PMID: 34699975 DOI: 10.1016/j.fsi.2021.10.034] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 10/20/2021] [Accepted: 10/22/2021] [Indexed: 06/13/2023]
Abstract
Recently, the concept of incorporating natural products into nanocarriers has been intended to promote fish growth and health via modulating their stability and bioavailability. In this concern, the potential role of reformulated quercetin into nanocarriers was examined, for the first time, on Nile tilapia's performance and immunity, flesh quality and antioxidant indices and disease resistance. Five hundred fish assigned into five experimental groups with formulated diets containing quercetin nanoparticles (QT-NPs) at levels of 0, 100, 200, 300 and 400 mg/kg were challenged with Aeromonas hydrophila (A. hydrophila) after 12 weeks feeding trial. Fish final body weight gain and feed efficiency were significantly maximized in groups enriched with 300 and 400 mg/kg of QT-NPs. Significant reduction in total saturated fatty acids and an elevation in polyunsaturated fatty acids' contents were noticed in fish fed higher QT-NPs doses. The levels of Hydrogen peroxide, reactive oxygen species and malondialdehyde, the markers of meat antioxidant capacity, were reduced by higher inclusion levels of QT-NPs. Accordingly, serum activities and transcriptional levels of GSH-Px, CAT and SOD genes were increased with elevated QT-NPs levels. Immune responses mediated by upregulation of IL-10 and TGF-β and downregulation of IL-1β, IL-8 and TNF-α mRNA levels were found to be positively affected by QT-NPs. Dietary QT-NPs downregulated the expression of ahyI and ahyR quorum sensing genes conferring protection against A. hydrophila challenge. This study concluded that supplementation of quercetin in encapsulated nanoparticles could improve its efficacy making it as a compelling approach to improve fish performance and as a promising drug candidate against A. hydrophila virulence.
Collapse
Affiliation(s)
- Doaa Ibrahim
- Department of Nutrition and Clinical Nutrition, Faculty of Veterinary Medicine, Zagazig University, 44511, Zagazig, Egypt.
| | - Asmaa T Y Kishawy
- Department of Nutrition and Clinical Nutrition, Faculty of Veterinary Medicine, Zagazig University, 44511, Zagazig, Egypt
| | - Safaa I Khater
- Department of Biochemistry, Faculty of Veterinary Medicine, Zagazig University, 44511, Zagazig, Egypt
| | - Eman Khalifa
- Department of Microbiology, Faculty of Veterinary Medicine, Matrouh University, Matrouh, 51511, Egypt
| | - Tamer Ahmed Ismail
- Department of Clinical Laboratory Sciences, Turabah University College, Taif University, P.O. Box 11099, Taif, 21944, Saudi Arabia
| | - Haiam A Mohammed
- Department of Physiology, Faculty of Veterinary Medicine, Zagazig University, 44511, Zagazig, Egypt
| | - Shimaa S Elnahriry
- Department of Bacteriology, Mycology and Immunology, Faculty of Veterinary Medicine, University of Sadat City, Menofia, 32897, Egypt
| | - Heba A Tolba
- Department of Fish Health and Management, Central Laboratory of Aquaculture Research (CLAR), AboHamad, Egypt, Agriculture Research Center (ARC), Egypt
| | - Wafaa R I A Sherief
- Department of Animal Wealth Development, Animal Breeding and Production, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt
| | - Mohamed F M Farag
- Department of Clinical Pathology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt
| | - Marwa I Abd El-Hamid
- Department of Microbiology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, 44511, Egypt
| |
Collapse
|
15
|
Linh NV, Dien LT, Panphut W, Thapinta A, Senapin S, St-Hilaire S, Rodkhum C, Dong HT. Ozone nanobubble modulates the innate defense system of Nile tilapia (Oreochromis niloticus) against Streptococcus agalactiae. FISH & SHELLFISH IMMUNOLOGY 2021; 112:64-73. [PMID: 33667674 DOI: 10.1016/j.fsi.2021.02.015] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 02/06/2021] [Accepted: 02/25/2021] [Indexed: 06/12/2023]
Abstract
Ozone nanobubble (NB-O3) is a promising technology for improving dissolved oxygen and reducing bacterial concentration in aquaculture systems. Here, we investigated the effects of NB-O3 on the innate immunity of fish by monitoring the expression levels of nonspecific immune-related genes (IL-1β, IL-2β, TNF-α), heat-shock protein genes (HSP70, HSP90-α), and a bacteriolytic enzyme, C-type lysozyme, gene (LYZ) post-treatment with this technology. Following exposure to NB-O3, the different tissues of Nile tilapia (Oreochromis niloticus) were collected over time for quantitative real-time PCR (qPCR) analysis. The expression of all the genes evaluated in the gills, the head kidney, and the spleen of the NB-O3 treated group was significantly up-regulated compared to that in the untreated control group. The expression levels were the highest (approx. 2 to 4-fold) at 15 min and 3 h post-exposure and then decreased from 6 to 24 h. These findings suggested that NB-O3 could switch on the innate immunity genes of Nile tilapia. Thus, we hypothesized that the NB-O3-immune-activated fish would respond more effectively to subsequent bacterial infections, thereby improving survivability compared to that of untreated fish. To test this hypothesis, 3 h post NB-O3 exposed fish and unexposed fish were challenged with a lethal dose of Streptococcus agalactiae. Interestingly, the survival rate of the NB-O3 group was significantly higher than that of the non-treated controls, with a relative percent survival (RPS) of 60-70%. Together, these findings indicate, for the first time, that NB-O3 may trigger the nonspecific defense system of the fish, thereby improving fish survivability during subsequent bacterial infections. This research identified another potential benefit of NB-O3 in aquaculture for preventing infectious bacterial diseases.
Collapse
Affiliation(s)
- Nguyen Vu Linh
- Fish Infectious Diseases Research Unit (FID RU), Department of Veterinary Microbiology, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Le Thanh Dien
- Fish Infectious Diseases Research Unit (FID RU), Department of Veterinary Microbiology, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, 10330, Thailand; Department of Biotechnology and Crop Science, Faculty of Agriculture and Food Technology, Tien Giang University, Tien Giang, Viet Nam
| | - Wattana Panphut
- Faculty of Science and Technology, Suan Sunandha Rajabhat University, Bangkok, 10300, Thailand
| | - Anat Thapinta
- Faculty of Science and Technology, Suan Sunandha Rajabhat University, Bangkok, 10300, Thailand
| | - Saengchan Senapin
- Fish Health Platform, Centex of Excellence for Shrimp Molecular Biology and Biotechnology (Centex Shrimp), Faculty of Science, Mahidol University, Bangkok, 10400, Thailand; National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), Pathum Thani, 12120, Thailand
| | - Sophie St-Hilaire
- Department of Infectious Diseases and Public Health, Jockey Club College of Veterinary Medicine and Life Sciences, City University of Hong Kong, Kowloon Tong, Hong Kong
| | - Channarong Rodkhum
- Fish Infectious Diseases Research Unit (FID RU), Department of Veterinary Microbiology, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, 10330, Thailand.
| | - Ha Thanh Dong
- Faculty of Science and Technology, Suan Sunandha Rajabhat University, Bangkok, 10300, Thailand.
| |
Collapse
|
16
|
Ilgová J, Salát J, Kašný M. Molecular communication between the monogenea and fish immune system. FISH & SHELLFISH IMMUNOLOGY 2021; 112:179-190. [PMID: 32800986 DOI: 10.1016/j.fsi.2020.08.023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 07/21/2020] [Accepted: 08/11/2020] [Indexed: 06/11/2023]
Abstract
Monogeneans parasitise mainly the outer structures of fish, such as the gills, fins, and skin, that is, tissues covered with a mucous layer. While attached by sclerotised structures to host's surface, monogeneans feed on its blood or epidermal cells and mucus. Besides being a rich source of nutrients, these tissues also contain humoral immune factors and immune cells, which are ready to launch defence mechanisms against the tegument or gastrointestinal tract of these invaders. The exploitation of hosts' resources by the Monogenea must, therefore, be accompanied by suppressive and immunomodulatory mechanisms which protect the parasites against attacks by host immune system. Elimination of hosts' cytotoxic molecules and evasion of host immune response is often mediated by proteins secreted by the parasites. The aim of this review is to summarise existing knowledge on fish immune responses against monogeneans. Results gleaned from experimental infections illustrate the various interactions between parasites and the innate and adaptive immune system of the fish. The involvement of monogenean molecules (mainly inhibitors of peptidases) in molecular communication with host immune system is discussed.
Collapse
Affiliation(s)
- Jana Ilgová
- Department of Botany and Zoology, Faculty of Science, Masaryk University, Kotlářská 2, Brno, 611 37, Czech Republic.
| | - Jiří Salát
- Department of Virology, Veterinary Research Institute, Hudcova 296/70, Brno, 621 00, Czech Republic
| | - Martin Kašný
- Department of Botany and Zoology, Faculty of Science, Masaryk University, Kotlářská 2, Brno, 611 37, Czech Republic
| |
Collapse
|
17
|
Gobbin TP, Vanhove MPM, Seehausen O, Maan ME. Microhabitat distributions and species interactions of ectoparasites on the gills of cichlid fish in Lake Victoria, Tanzania. Int J Parasitol 2020; 51:201-214. [PMID: 33161003 DOI: 10.1016/j.ijpara.2020.09.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 09/14/2020] [Accepted: 09/16/2020] [Indexed: 10/23/2022]
Abstract
Heterogeneous exposure to parasites may contribute to host species differentiation. Hosts often harbour multiple parasite species which may interact and thus modify each other's effects on host fitness. Antagonistic or synergistic interactions between parasites may be detectable as niche segregation within hosts. Consequently, the within-host distribution of different parasite taxa may constitute an important axis of infection variation among host populations and species. We investigated the microhabitat distributions and species interactions of gill parasites (four genera) infecting 14 sympatric cichlid species in Lake Victoria, Tanzania. We found that the two most abundant ectoparasite genera (the monogenean Cichlidogyrus spp. and the copepod Lamproglena monodi) were non-randomly distributed across the host gills and their spatial distribution differed between host species. This may indicate microhabitat selection by the parasites and cryptic differences in the host-parasite interaction among host species. Relationships among ectoparasite genera were synergistic: the abundances of Cichlidogyrus spp. and the copepods L. monodi and Ergasilus lamellifer tended to be positively correlated. In contrast, relationships among morphospecies of Cichlidogyrus were antagonistic: the abundances of morphospecies were negatively correlated. Together with niche overlap, this suggests competition among morphospecies of Cichlidogyrus. We also assessed the reproductive activity of the copepod species (the proportion of individuals carrying egg clutches), as it may be affected by the presence of other parasites and provide another indicator of the species specificity of the host-parasite relationship. Copepod reproductive activity did not differ between host species and was not associated with the presence or abundance of other parasites, suggesting that these are generalist parasites, thriving in all cichlid species examined from Lake Victoria.
Collapse
Affiliation(s)
- Tiziana P Gobbin
- Division of Aquatic Ecology & Evolution, Institute of Ecology and Evolution, University of Bern, Bern, Switzerland; Department of Fish Ecology and Evolution, Centre of Ecology, Evolution and Biogeochemistry, Eawag, Swiss Federal Institute of Aquatic Science and Technology, Kastanienbaum, Switzerland; Groningen Institute for Evolutionary Life Sciences, University of Groningen, Groningen, the Netherlands.
| | - Maarten P M Vanhove
- Research Group Zoology: Biodiversity & Toxicology, Centre for Environmental Sciences, Hasselt University, Diepenbeek, Belgium; Laboratory of Biodiversity and Evolutionary Genomics, Department of Biology, University of Leuven, Leuven, Belgium; Department of Botany and Zoology, Faculty of Science, Masaryk University, Brno, Czech Republic
| | - Ole Seehausen
- Division of Aquatic Ecology & Evolution, Institute of Ecology and Evolution, University of Bern, Bern, Switzerland; Department of Fish Ecology and Evolution, Centre of Ecology, Evolution and Biogeochemistry, Eawag, Swiss Federal Institute of Aquatic Science and Technology, Kastanienbaum, Switzerland
| | - Martine E Maan
- Groningen Institute for Evolutionary Life Sciences, University of Groningen, Groningen, the Netherlands
| |
Collapse
|
18
|
Zhi T, Huang C, Sun R, Zheng Y, Chen J, Xu X, Brown CL, Yang T. Mucosal immune response of Nile tilapia Oreochromis niloticus during Gyrodactylus cichlidarum infection. FISH & SHELLFISH IMMUNOLOGY 2020; 106:21-27. [PMID: 32693157 DOI: 10.1016/j.fsi.2020.07.025] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 07/08/2020] [Accepted: 07/13/2020] [Indexed: 06/11/2023]
Abstract
Monogenean Gyrodactylus cichlidarum can cause severe mortality of Nile tilapia (Oreochromis niloticus) fry. To date, reports about mucosal immunity of O. niloticus against this parasite have been rare. In order to explore the mucosal immunity of Nile tilapia against G. cichlidarum infection, the expressions of six adaptive immune-related genes and the contents of specific immunoglobulin IgM and IgT in the skin-associated lymphoid tissues (SALT) were dynamically analyzed after primary and secondary infections. The abundances of G. cichlidarum on the hosts after secondary infection were lower than those after primary parasite infection, which implied that hosts could initiate immune protection against G. cichlidarum reinfection to some degree. The transcription levels of TCR-β and CD4 genes in the skin tissue were significantly up-regulated after primary G. cichlidarum infection, while genes pIgR and IgT were only detected with significant up-regulations during secondary infection. With the exception of pIgR, which had remarkably higher expression in the fish with low parasite loads, all other genes studied tended to have higher mRNA level in the fish with higher parasite loads. The specific IgM content in the skin mucus increased significantly on the 2nd day after the primary exposure, higher than the corresponding value during the secondary exposure, and had significantly positive correlation with the parasite loads during the first parasite infection. These results manifested that acquired immune responses in the SALT of Nile tilapia participated in the resistance against G. cichlidarum infection, underscoring the involvement of mucosal immunity in fish against monogenean infection, and suggesting potential prophylactic treatment of gyrodactylid disease of tilapia.
Collapse
Affiliation(s)
- Tingting Zhi
- State Key Laboratory of Biocontrol and Center for Parasitic Organisms, Guangdong Provincial Key Laboratory for Improved Variety Reproduction of Aquatic Economic Animals, Center for Parasitic Organisms, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Chaoqun Huang
- State Key Laboratory of Biocontrol and Center for Parasitic Organisms, Guangdong Provincial Key Laboratory for Improved Variety Reproduction of Aquatic Economic Animals, Center for Parasitic Organisms, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Rui Sun
- State Key Laboratory of Biocontrol and Center for Parasitic Organisms, Guangdong Provincial Key Laboratory for Improved Variety Reproduction of Aquatic Economic Animals, Center for Parasitic Organisms, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Yingying Zheng
- State Key Laboratory of Biocontrol and Center for Parasitic Organisms, Guangdong Provincial Key Laboratory for Improved Variety Reproduction of Aquatic Economic Animals, Center for Parasitic Organisms, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Jinsong Chen
- State Key Laboratory of Biocontrol and Center for Parasitic Organisms, Guangdong Provincial Key Laboratory for Improved Variety Reproduction of Aquatic Economic Animals, Center for Parasitic Organisms, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Xiangli Xu
- State Key Laboratory of Biocontrol and Center for Parasitic Organisms, Guangdong Provincial Key Laboratory for Improved Variety Reproduction of Aquatic Economic Animals, Center for Parasitic Organisms, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | | | - Tingbao Yang
- State Key Laboratory of Biocontrol and Center for Parasitic Organisms, Guangdong Provincial Key Laboratory for Improved Variety Reproduction of Aquatic Economic Animals, Center for Parasitic Organisms, School of Life Sciences, Sun Yat-sen University, Guangzhou, China.
| |
Collapse
|
19
|
Abdel-Latif HMR, Dawood MAO, Menanteau-Ledouble S, El-Matbouli M. The nature and consequences of co-infections in tilapia: A review. JOURNAL OF FISH DISEASES 2020; 43:651-664. [PMID: 32315088 DOI: 10.1111/jfd.13164] [Citation(s) in RCA: 61] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Revised: 03/02/2020] [Accepted: 03/02/2020] [Indexed: 06/11/2023]
Abstract
Co-infections commonly arise when two or multiple different pathogens infect the same host, either as simultaneous or as secondary concurrent infection. This potentiates their pathogenic effects and leads to serious negative consequences on the exposed host. Numerous studies on the occurrence of the bacterial, parasitic, fungal and viral co-infections were conducted in various tilapia species. Co-infections have been associated with serious negative impacts on susceptible fish because they increase the fish susceptibility to diseases and the likelihood of outbreaks in the affected fish. Co-infections can alter the disease course and increase the severity of disease through synergistic and, more rarely, antagonistic interactions. In this review, reports on the synergistic co-infections and their impacts on the affected tilapia species are highlighted. Additionally, their pathogenic mechanisms are briefly discussed. Tilapia producers should be aware of the possible occurrence of co-infections and their effects on the affected tilapia species and in particular of the clinical signs and course of the disease. To date, there is still limited information regarding the pathogenicity mechanisms and pathogen interactions during these co-infections. This is generally due to low awareness regarding co-infections, and in many cases, a dominant pathogen is perceived to be of vital importance and hence becomes the target of treatment while the treatment of the co-infectious agents is neglected. This review article aimed at raising awareness regarding co-infections and helping researchers and fish health specialists pay greater attention to these natural cases, leading to increased research and more consistent diagnosis of co-infectious outbreaks in order to improve control strategies to protect tilapia when infected with multiple pathogens.
Collapse
Affiliation(s)
- Hany M R Abdel-Latif
- Department of Poultry and Fish diseases, Faculty of Veterinary Medicine, Alexandria University, Alexandria, Egypt
| | - Mahmoud A O Dawood
- Department of Animal Production, Faculty of Agriculture, Kafrelsheikh University, Kafrelsheikh, Egypt
| | | | - Mansour El-Matbouli
- Clinical Division of Fish Medicine, University of Veterinary Medicine Vienna, Vienna, Austria
| |
Collapse
|
20
|
Gobbin TP, Vanhove MPM, Pariselle A, Groothuis TGG, Maan ME, Seehausen O. Temporally consistent species differences in parasite infection but no evidence for rapid parasite-mediated speciation in Lake Victoria cichlid fish. J Evol Biol 2020; 33:556-575. [PMID: 32163649 PMCID: PMC7318199 DOI: 10.1111/jeb.13615] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 02/17/2020] [Accepted: 03/04/2020] [Indexed: 12/31/2022]
Abstract
Parasites may have strong eco‐evolutionary interactions with their hosts. Consequently, they may contribute to host diversification. The radiation of cichlid fish in Lake Victoria provides a good model to study the role of parasites in the early stages of speciation. We investigated patterns of macroparasite infection in a community of 17 sympatric cichlids from a recent radiation and 2 older species from 2 nonradiating lineages, to explore the opportunity for parasite‐mediated speciation. Host species had different parasite infection profiles, which were only partially explained by ecological factors (diet, water depth). This may indicate that differences in infection are not simply the result of differences in exposure, but that hosts evolved species‐specific resistance, consistent with parasite‐mediated divergent selection. Infection was similar between sampling years, indicating that the direction of parasite‐mediated selection is stable through time. We morphologically identified 6 Cichlidogyrus species, a gill parasite that is considered a good candidate for driving parasite‐mediated speciation, because it is host species‐specific and has radiated elsewhere in Africa. Species composition of Cichlidogyrus infection was similar among the most closely related host species (members of the Lake Victoria radiation), but two more distantly related species (belonging to nonradiating sister lineages) showed distinct infection profiles. This is inconsistent with a role for Cichlidogyrus in the early stages of divergence. To conclude, we find significant interspecific variation in parasite infection profiles, which is temporally consistent. We found no evidence that Cichlidogyrus‐mediated selection contributes to the early stages of speciation. Instead, our findings indicate that species differences in infection accumulate after speciation.
Collapse
Affiliation(s)
- Tiziana P Gobbin
- Division of Aquatic Ecology & Evolution, Institute of Ecology and Evolution, University of Bern, Bern, Switzerland.,Groningen Institute for Evolutionary Life Sciences, University of Groningen, Groningen, the Netherlands.,Department of Fish Ecology and Evolution, Centre of Ecology, Evolution and Biogeochemistry, Eawag, Swiss Federal Institute of Aquatic Science and Technology, Kastanienbaum, Switzerland
| | - Maarten P M Vanhove
- Research Group Zoology: Biodiversity & Toxicology, Centre for Environmental Sciences, Hasselt University, Diepenbeek, Belgium.,Department of Biology, Laboratory of Biodiversity and Evolutionary Genomics, University of Leuven, Leuven, Belgium.,Department of Botany and Zoology, Faculty of Science, Masaryk University, Brno, Czech Republic.,Zoology Unit, Finnish Museum of Natural History, University of Helsinki, Helsinki, Finland
| | - Antoine Pariselle
- ISEM, CNRS, Université de Montpellier, IRD, Montpellier, France.,Faculty of Sciences, Laboratory of Biodiversity, Ecology and Genome, Mohammed V University in Rabat, Rabat, Morocco
| | - Ton G G Groothuis
- Department of Fish Ecology and Evolution, Centre of Ecology, Evolution and Biogeochemistry, Eawag, Swiss Federal Institute of Aquatic Science and Technology, Kastanienbaum, Switzerland
| | - Martine E Maan
- Department of Fish Ecology and Evolution, Centre of Ecology, Evolution and Biogeochemistry, Eawag, Swiss Federal Institute of Aquatic Science and Technology, Kastanienbaum, Switzerland
| | - Ole Seehausen
- Division of Aquatic Ecology & Evolution, Institute of Ecology and Evolution, University of Bern, Bern, Switzerland.,Groningen Institute for Evolutionary Life Sciences, University of Groningen, Groningen, the Netherlands
| |
Collapse
|
21
|
Ilgová J, Kavanová L, Matiašková K, Salát J, Kašný M. Effect of cysteine peptidase inhibitor of Eudiplozoon nipponicum (Monogenea) on cytokine expression of macrophages in vitro. Mol Biochem Parasitol 2019; 235:111248. [PMID: 31874193 DOI: 10.1016/j.molbiopara.2019.111248] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Revised: 12/18/2019] [Accepted: 12/19/2019] [Indexed: 01/14/2023]
Abstract
The gills of the common carp, whose mucosal surface belongs to the key defence mechanisms of piscine immunity, can be infested with both the larval and adult stage of Eudiplozoon nipponicum (Monogenea). Although on their own, monogeneans do not considerably compromise their hosts' health status, fish with epithelial barriers damaged in parasite feeding and attachment sites are at an increased risk of bacterial challenge with possible harmful consequences. Several studies suggest that helminth parasites of teleost fish evade and manipulate host immune system via their excretory-secretory products, but our knowledge of these processes in the monogeneans is limited. Cysteine peptidase inhibitors (CPI), which are found in the secretions of numerous parasites, often induce immunosuppression by subverting Th1 mechanisms and drawing the immune system towards a Th2/Treg response. We employed the qPCR to test the effect of recently characterised CPI of E. nipponicum (rEnStef) on the mRNA expression of pro-inflammatory cytokine TNF-α and anti-inflammatory cytokine IL-10 produced by porcine macrophages in vitro. After an initial preincubation with rEnStef, we stimulated the macrophages using LPS. By inducing a Th1 pro-inflammatory response, we imitated the immune reaction during a bacterial challenge in tissue damaged by the feeding and attachment of E. nipponicum. We observed a significant dose-dependent downregulation of the expression of TNF-α and IL-10 cytokines. The observed suppression of TNF-alpha expression by rEnStef could result in decreased pathogen control, which might in turn lead to increased rates of secondary bacterial infections in fish infected by E. nipponicum.
Collapse
Affiliation(s)
- Jana Ilgová
- Department of Botany and Zoology, Faculty of Science, Masaryk University, Brno, 611 37, Czech Republic.
| | - Lenka Kavanová
- Department of Immunology, Veterinary Research Institute, Brno, 621 00, Czech Republic
| | - Katarína Matiašková
- Department of Immunology, Veterinary Research Institute, Brno, 621 00, Czech Republic
| | - Jiří Salát
- Department of Virology, Veterinary Research Institute, Brno, 621 00, Czech Republic
| | - Martin Kašný
- Department of Botany and Zoology, Faculty of Science, Masaryk University, Brno, 611 37, Czech Republic
| |
Collapse
|
22
|
Gray ( Oreochromis niloticus x O. aureus) and Red ( Oreochromis spp.) Tilapia Show Equal Susceptibility and Proinflammatory Cytokine Responses to Experimental Tilapia Lake Virus Infection. Viruses 2019; 11:v11100893. [PMID: 31554184 PMCID: PMC6832934 DOI: 10.3390/v11100893] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Revised: 09/18/2019] [Accepted: 09/19/2019] [Indexed: 02/01/2023] Open
Abstract
Tilapia is the second most farmed fish species after carp in the world. However, the production has come under threat due to emerging diseases such as tilapia lake virus (TiLV) that causes massive mortalities with high economic losses. It is largely unknown whether different tilapia strains are equally susceptible to TiLV infection. In the present study we compared the susceptibility of gray (Oreochromis niloticus x O. aureus) and red tilapia (Oreochromis spp.) to experimental TiLV infection. Virus was injected intraperitoneally at a concentration of 104 TCID50/mL. Our findings show that gray tilapia had a lower mortality, 86.44%, but statistically not significantly different (p = 0.068) from red tilapia (100%). The duration of the mortality period from onset to cessation was similar for the two species, starting at 2–3 days post challenge (dpc) with a median at 10–11 dpi and ending on 20–22 dpi. In addition, there was no difference between species in mean viral loads in brain, liver and headkidney from fish collected soon after death. As for host response, expression levels of IL-1β and TNFα were equally high in brain and headkidney samples while levels in liver samples were low for both red and gray tilapia, which coincides with lower viral loads in liver compared to brain and headkidney for both species. We find that red and gray tilapia were equally susceptible to TiLV infection with similar post challenge mortality levels, equal virus concentration in target organs and similar proinflammatory cytokine responses in target and lymphoid organs at time of death. Nonetheless, we advocate that the search for less susceptible tilapia strains should continue with the view to reduce losses from TiLV infection in aquaculture.
Collapse
|
23
|
Piazzon MC, Mladineo I, Naya-Català F, Dirks RP, Jong-Raadsen S, Vrbatović A, Hrabar J, Pérez-Sánchez J, Sitjà-Bobadilla A. Acting locally - affecting globally: RNA sequencing of gilthead sea bream with a mild Sparicotyle chrysophrii infection reveals effects on apoptosis, immune and hypoxia related genes. BMC Genomics 2019; 20:200. [PMID: 30866816 PMCID: PMC6416957 DOI: 10.1186/s12864-019-5581-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Accepted: 03/03/2019] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Monogenean flatworms are the main fish ectoparasites inflicting serious economic losses in aquaculture. The polyopisthocotylean Sparicotyle chrysophrii parasitizes the gills of gilthead sea bream (GSB, Sparus aurata) causing anaemia, lamellae fusion and sloughing of epithelial cells, with the consequent hypoxia, emaciation, lethargy and mortality. Currently no preventive or curative measures against this disease exist and therefore information on the host-parasite interaction is crucial to find mitigation solutions for sparicotylosis. The knowledge about gene regulation in monogenean-host models mostly comes from freshwater monopysthocotyleans and almost nothing is known about polyopisthocotyleans. The current study aims to decipher the host response at local (gills) and systemic (spleen, liver) levels in farmed GSB with a mild natural S. chrysophrii infection by transcriptomic analysis. RESULTS Using Illumina RNA sequencing and transcriptomic analysis, a total of 2581 differentially expressed transcripts were identified in infected fish when compared to uninfected controls. Gill tissues in contact with the parasite (P gills) displayed regulation of fewer genes (700) than gill portions not in contact with the parasite (NP gills) (1235), most likely due to a local silencing effect of the parasite. The systemic reaction in the spleen was much higher than that at the parasite attachment site (local) (1240), and higher than in liver (334). NP gills displayed a strong enrichment of genes mainly related to immune response and apoptosis. Processes such as apoptosis, inflammation and cell proliferation dominated gills, whereas inhibition of apoptosis, autophagy, platelet activation, signalling and aggregation, and inflammasome were observed in spleen. Proteasome markers were increased in all tissues, whereas hypoxia-related genes were down-regulated in gills and spleen. CONCLUSIONS Contrasting forces seem to be acting at local and systemic levels. The splenic down-regulation could be part of a hypometabolic response, to counteract the hypoxia induced by the parasite damage to the gills and to concentrate the energy on defence and repair responses. Alternatively, it can be also interpreted as the often observed action of helminths to modify host immunity in its own interest. These results provide the first toolkit for future studies towards understanding and management of this parasitosis.
Collapse
Affiliation(s)
- M Carla Piazzon
- Fish Pathology Group, Institute of Aquaculture Torre de la Sal (IATS-CSIC), Ribera de Cabanes, Castellón, Spain.
| | | | - Fernando Naya-Català
- Nutrigenomics and Fish Growth Endocrinology Group, Institute of Aquaculture Torre de la Sal (IATS-CSIC), Ribera de Cabanes, Castellón, Spain.,Biotechvana, Parc Cientific, Universitat de Valencia, Valencia, Spain
| | - Ron P Dirks
- Future Genomics Technology, Leiden, The Netherlands
| | | | | | - Jerko Hrabar
- Institute of Oceanography and Fisheries, Split, Croatia
| | - Jaume Pérez-Sánchez
- Nutrigenomics and Fish Growth Endocrinology Group, Institute of Aquaculture Torre de la Sal (IATS-CSIC), Ribera de Cabanes, Castellón, Spain
| | - Ariadna Sitjà-Bobadilla
- Fish Pathology Group, Institute of Aquaculture Torre de la Sal (IATS-CSIC), Ribera de Cabanes, Castellón, Spain
| |
Collapse
|
24
|
Tu X, Qi X, Huang A, Ling F, Wang G. Cytokine gene expression profiles in goldfish (Carassius auratus) during Gyrodactylus kobayashii infection. FISH & SHELLFISH IMMUNOLOGY 2019; 86:116-124. [PMID: 30448448 DOI: 10.1016/j.fsi.2018.11.035] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Revised: 11/09/2018] [Accepted: 11/14/2018] [Indexed: 06/09/2023]
Abstract
Monogeneans of the genus Gyrodactylus are well-known pathogens causing huge mortalities in wild and cultured fish. Cytokine expression is one of most important host defense mechanisms against parasite infections. In this study, the expression pattern of the key pro-inflammatory (IL-1β, IL-8, IFN-γ, TNF-α, IL-12 and iNOS) and anti-inflammatory cytokine genes (IL-10, TGFβ and IL-4) of Gyrodactylus kobayashii infected goldfish (Carassius auratus) were determined by real-time quantitative PCR analysis. Our results showed that G. kobayashii infection caused increased expression of the pro-inflammatory cytokines including IFN-γ, TNF-α and iNOS in all detected tissues throughout the infection period. Among these genes, iNOS has the highest transcript level accompanied with increased nitric oxide (NO) concentration in the serum of all infected goldfish. The mRNA level of IL-1β in the liver, spleen and head kidney was significantly up-regulated during the early stage of infection (days 2-8). While high expression level of IL-8 and IL-12 was observed during the elimination phase of infection (days 10-14). As for anti-inflammatory cytokines, the expression profiles of IL-10 were distinct from those of TGF-β and IL-4. Specifically, the mRNA level of IL-10 did not increase in the spleen and head kidney during the early stage of infection, while increased expression of TGF-β and IL-4 were likewise seen. Besides, all infected fish had significantly higher complement C3 but lower IgM levels than the non-infected fish. The results provide insights into the interaction between gyrodactylids and the fish host, and indicate that systemic cytokine responses are critical for controlling parasite infection in fish.
Collapse
Affiliation(s)
- Xiao Tu
- Northwest A&F University, Xinong Road 22nd, Yangling, Shaanxi, 712100, China
| | - Xiaozhou Qi
- Northwest A&F University, Xinong Road 22nd, Yangling, Shaanxi, 712100, China
| | - Aiguo Huang
- Northwest A&F University, Xinong Road 22nd, Yangling, Shaanxi, 712100, China
| | - Fei Ling
- Northwest A&F University, Xinong Road 22nd, Yangling, Shaanxi, 712100, China
| | - Gaoxue Wang
- Northwest A&F University, Xinong Road 22nd, Yangling, Shaanxi, 712100, China.
| |
Collapse
|