1
|
ISLAM AKMA, NAKATANI M, NAKAJIMA T, KOHDA T, MUKAMOTO M. The cytotoxicity and molecular mechanisms of the Clostridium perfringens NetB toxin. J Vet Med Sci 2021; 83:187-194. [PMID: 33342969 PMCID: PMC7972886 DOI: 10.1292/jvms.20-0623] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Accepted: 12/02/2020] [Indexed: 11/22/2022] Open
Abstract
The necrotic enteritis toxin B-like (NetB) toxin secreted by Clostridium perfringens is a key virulence agent in the pathogenesis of avian necrotic enteritis, a disease that causes significant economic loss to the poultry industry worldwide. NetB was purified from Clostridium perfringens type G (CNEOP004) that was isolated from chickens with necrotic enteritis in Japan. EC50 of this purified NetB toward chicken liver-derived LMH cells was 0.63 µg/ml. In vivo pathogenicity of NetB to chicks produced characteristic lesions of necrotic enteritis. Analysis of the localization of the NetB monomer and oligomer molecules on LMH cells showed that both molecules of the toxin were localized in non-lipid raft regions. Moreover, removal of cholesterol with the cholesterol depletion assay carried out in LMH cells detected both oligomers and monomers of the NetB molecule. These data suggest that the NetB toxin may recognize membrane molecules different from cholesterol in non-raft region. Furthermore, NetB-binding molecules on LMH cell membranes using the toxin overlay assay with immunoblotting showed that protein molecules of different molecular sizes were bound to NetB on non-lipid raft fractions. Further studies are necessary to characterize these protein molecules to examine their specific association with NetB binding and oligomerization.
Collapse
Affiliation(s)
- AKM Azharul ISLAM
- Laboratory of Veterinary Epidemiology, Osaka Prefecture
University, 1-58 Rinku-Ourai-Kita, Izumisano, Osaka 598-8531, Japan
| | - Mitsuki NAKATANI
- Laboratory of Veterinary Epidemiology, Osaka Prefecture
University, 1-58 Rinku-Ourai-Kita, Izumisano, Osaka 598-8531, Japan
| | - Takayuki NAKAJIMA
- Laboratory of Veterinary Anatomy, Osaka Prefecture
University, 1-58 Rinku-Ourai-Kita, Izumisano, Osaka 598-8531, Japan
| | - Tomoko KOHDA
- Laboratory of Veterinary Epidemiology, Osaka Prefecture
University, 1-58 Rinku-Ourai-Kita, Izumisano, Osaka 598-8531, Japan
| | - Masafumi MUKAMOTO
- Laboratory of Veterinary Epidemiology, Osaka Prefecture
University, 1-58 Rinku-Ourai-Kita, Izumisano, Osaka 598-8531, Japan
| |
Collapse
|
2
|
Alonso JDM, Martins ES, Peccinini RG, Rosa GS, Guerra ST, Ribeiro MG, Santos B, García HDM, Watanabe MJ, Takahira RK, Rodrigues CA, Alves ALG, Hussni CA. Plasma and Peritoneal Ceftriaxone Concentrations After Intraperitoneal Administration in Horses With Septic Peritonitis. J Equine Vet Sci 2020; 96:103310. [PMID: 33349404 DOI: 10.1016/j.jevs.2020.103310] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 08/28/2020] [Accepted: 10/16/2020] [Indexed: 11/17/2022]
Abstract
Intraperitoneal ceftriaxone administration in healthy horses results in high and prolonged peritoneal concentrations. Recent findings suggest that intraperitoneal ceftriaxone might increase survival rates in horses affected by peritonitis. The present study aimed to evaluate plasma and peritoneal concentrations of ceftriaxone after intraperitoneal administration in horses with septic peritonitis. Twenty-six horses presenting clinical, laboratorial, and sonographic findings compatible with the disease were included. All horses received daily intraperitoneal ceftriaxone (25 mg/kg bwt) in addition or not with other antibiotics and support therapies. High-performance liquid chromatography was used to determine plasma and peritoneal ceftriaxone concentrations before and after 12 and 24 hours of ceftriaxone administration. Mean plasma concentrations 12 and 24 hours after administration were, respectively, 1.84 ± 0.43 and 0.37 ± 0.07 μg/mL, and mean peritoneal concentrations were 5.7 ± 2.84 and 0.42 ± 0.13 μg/mL. Ceftriaxone concentration was lower in comparison with previous studies in healthy horses and presented under the minimal inhibitory concentration for enterobacteria (≤1 μg/mL) and for gram-positive isolates (≤0.5 μg/mL) at 24 hours. The variation of the results obtained between healthy horses and with septic peritonitis demonstrated that pharmacokinetics/dynamics are different between these patients and suggests the use of an interval of dose of 12 hours.
Collapse
Affiliation(s)
- Juliana de M Alonso
- Department of Veterinary Surgery and Animal Reproduction, School of Veterinary Medicine and Animal Science, Univ. Estadual Paulista (Unesp), Botucatu, Brazil
| | - Evelin S Martins
- Department of Natural Active Principles and Toxicology, School of Pharmaceutical Sciences, Univ. Estadual Paulista (Unesp), Araraquara, Brazil
| | - Rosangela G Peccinini
- Department of Natural Active Principles and Toxicology, School of Pharmaceutical Sciences, Univ. Estadual Paulista (Unesp), Araraquara, Brazil
| | - Gustavo S Rosa
- Department of Veterinary Surgery and Animal Reproduction, School of Veterinary Medicine and Animal Science, Univ. Estadual Paulista (Unesp), Botucatu, Brazil
| | - Simony T Guerra
- Department of Animal Production and Preventive Veterinary Medicine, School of Veterinary Medicine and Animal Science, Univ. Estadual Paulista (Unesp), Botucatu, Brazil
| | - Márcio G Ribeiro
- Department of Animal Production and Preventive Veterinary Medicine, School of Veterinary Medicine and Animal Science, Univ. Estadual Paulista (Unesp), Botucatu, Brazil
| | - Bruna Santos
- Department of Veterinary Clinics, School of Veterinary Medicine and Animal Science, Univ. Estadual Paulista (Unesp), Botucatu, Brazil
| | - Henry D M García
- Department of Veterinary Surgery and Animal Reproduction, School of Veterinary Medicine and Animal Science, Univ. Estadual Paulista (Unesp), Botucatu, Brazil
| | - Marcos J Watanabe
- Department of Veterinary Surgery and Animal Reproduction, School of Veterinary Medicine and Animal Science, Univ. Estadual Paulista (Unesp), Botucatu, Brazil
| | - Regina K Takahira
- Department of Veterinary Clinics, School of Veterinary Medicine and Animal Science, Univ. Estadual Paulista (Unesp), Botucatu, Brazil
| | - Celso A Rodrigues
- Department of Veterinary Surgery and Animal Reproduction, School of Veterinary Medicine and Animal Science, Univ. Estadual Paulista (Unesp), Botucatu, Brazil
| | - Ana Liz G Alves
- Department of Veterinary Surgery and Animal Reproduction, School of Veterinary Medicine and Animal Science, Univ. Estadual Paulista (Unesp), Botucatu, Brazil
| | - Carlos A Hussni
- Department of Veterinary Surgery and Animal Reproduction, School of Veterinary Medicine and Animal Science, Univ. Estadual Paulista (Unesp), Botucatu, Brazil.
| |
Collapse
|
3
|
Vasquez I, Cao T, Hossain A, Valderrama K, Gnanagobal H, Dang M, Leeuwis RHJ, Ness M, Campbell B, Gendron R, Kao K, Westcott J, Gamperl AK, Santander J. Aeromonas salmonicida infection kinetics and protective immune response to vaccination in sablefish (Anoplopoma fimbria). Fish Shellfish Immunol 2020; 104:557-566. [PMID: 32592927 DOI: 10.1016/j.fsi.2020.06.005] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Revised: 05/29/2020] [Accepted: 06/02/2020] [Indexed: 06/11/2023]
Abstract
Effective vaccine programs against Aeromonas salmonicida have been identified as a high priority area for the sablefish (Anoplopoma fimbria) aquaculture. In this study, we established an A. salmonicida infection model in sablefish to evaluate the efficacy of commercial vaccines and an autogenous vaccine preparation. Groups of 40 fish were intraperitoneally (ip) injected with different doses of A. salmonicida J410 isolated from infected sablefish to calculate the median lethal dose (LD50). Samples of blood, head kidney, spleen, brain, and liver were also collected at different time points to determine the infection kinetics. The LD50 was estimated as ~3 × 105 CFU/dose. To evaluate the immune protection provided by an autogenous vaccine and two commercial vaccines in a common garden experimental design, 140 fish were PIT-tagged, vaccinated and distributed equally into 4 tanks (35 fish for each group, including a control group). Blood samples were taken every 2 weeks to evaluate IgM titers. At 10 weeks post-immunization, all groups were ip challenged with 100 times the calculated LD50 for A. salmonicida J410. A. salmonicida was detected after 5 days post-infection (dpi) in all collected tissues. At 30 days post-challenge the relative percentage survival (RPS) with respect to the control group was calculated for each vaccine. The RPS for the bacterin mix was 65.22%, for Forte Micro 4® vaccine was 56.52% and for Alpha Ject Micro 4® was 30.43%, and these RPS values were reflected by A. salmonicida tissue colonization levels at 10 days post-challenge. Total IgM titers peaked at 6-8 weeks post-immunization, where the autogenous vaccine group showed the highest IgM titers and these values were consistent with the RPS data. Also, we determined that the A. salmonicida A-layer binds to immunoglobulins F(ab)' in a non-specific fashion, interfering with immune assays and potentially vaccine efficacy. Our results indicate that vaccine design influences sablefish immunity and provide a guide for future sablefish vaccine programs.
Collapse
Affiliation(s)
- Ignacio Vasquez
- Marine Microbial Pathogenesis and Vaccinology Laboratory, Department of Ocean Sciences, Memorial University of Newfoundland, St. John's, NL, Canada
| | - Trung Cao
- Marine Microbial Pathogenesis and Vaccinology Laboratory, Department of Ocean Sciences, Memorial University of Newfoundland, St. John's, NL, Canada
| | - Ahmed Hossain
- Marine Microbial Pathogenesis and Vaccinology Laboratory, Department of Ocean Sciences, Memorial University of Newfoundland, St. John's, NL, Canada
| | - Katherinne Valderrama
- Marine Microbial Pathogenesis and Vaccinology Laboratory, Department of Ocean Sciences, Memorial University of Newfoundland, St. John's, NL, Canada
| | - Hajarooba Gnanagobal
- Marine Microbial Pathogenesis and Vaccinology Laboratory, Department of Ocean Sciences, Memorial University of Newfoundland, St. John's, NL, Canada
| | - My Dang
- Marine Microbial Pathogenesis and Vaccinology Laboratory, Department of Ocean Sciences, Memorial University of Newfoundland, St. John's, NL, Canada
| | - Robine H J Leeuwis
- Fish Physiology Laboratory, Department of Ocean Sciences, Memorial University of Newfoundland, St. John's, NL, Canada
| | | | | | - Robert Gendron
- Division of Biomedical Sciences, Faculty of Medicine, Memorial University of Newfoundland, St. John's, NL, Canada
| | - Kenneth Kao
- Division of Biomedical Sciences, Faculty of Medicine, Memorial University of Newfoundland, St. John's, NL, Canada
| | - Jillian Westcott
- Fisheries and Marine Institute, Memorial University of Newfoundland, St. John's, NL, Canada
| | - A Kurt Gamperl
- Fish Physiology Laboratory, Department of Ocean Sciences, Memorial University of Newfoundland, St. John's, NL, Canada
| | - Javier Santander
- Marine Microbial Pathogenesis and Vaccinology Laboratory, Department of Ocean Sciences, Memorial University of Newfoundland, St. John's, NL, Canada.
| |
Collapse
|
4
|
Nguyen DT, Marancik D, Soto E. Intracoelomic- and Intramuscular-Injection Challenge Model of Piscine Streptococcosis in White Sturgeon Fingerlings. J Aquat Anim Health 2020; 32:133-138. [PMID: 32845532 DOI: 10.1002/aah.10112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 06/24/2020] [Accepted: 07/05/2020] [Indexed: 06/11/2023]
Abstract
Streptococcus iniae is a zoonotic pathogen and one of the major aetiologic agents of streptococcosis. In White Sturgeon Acipenser transmontanus, S. iniae infection typically presents as a necrotizing and heterophilic myositis, causing 30-50% mortality in infected fish. To gain a better understanding of the pathogenesis of streptococcosis in White Sturgeon, and to identify the experimental route of infection that most closely mimics the natural disease, fingerlings were challenged with a single dose of 1.3 × 108 cells/fish of S. iniae that was administered via intracoelomic/intraperitoneal (IC) or intramuscular (IM) routes. Acute mortalities were present only in the IM-challenged fish, with first mortality occurring 4 d postchallenge and the mortality rate reaching 18.3% after 9 d. The challenged fish presented erratic swimming, ulcerative skin lesions, and hemorrhages in the liver and swim bladder. Streptococcus iniae was recovered from the kidney and brain tissues of moribund and dead fish. Histopathologic analysis of fish that died acutely revealed massive proliferation of bacteria in the muscle at the injection site and within vascular organs such as the heart and spleen, with variable amounts of tissue necrosis including a necrotizing myositis. Fish that died closer to 9 d postchallenge demonstrated more pronounced multifocal to locally extensive granulomatous inflammation of skeletal muscle at the injection site, liver, kidney, and spleen. No mortality, clinical signs, or gross changes were observed in the control or IC-challenged fish. Postmortem evaluation of 10 survivors in each treatment was performed to determine carrier status in the brain and posterior kidney tissues. The prevalence of S. iniae in survivors was 10% and 0% in the IM- and IC-challenged groups, respectively. The results from this study suggest that IM-injection challenge methods are suitable for inducing streptococcosis in White Sturgeon, and they may be the preferred method for studying the pathogenesis of the naturally occurring disease in this species.
Collapse
Affiliation(s)
- Diem Thu Nguyen
- Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California Davis, Davis, California, 95616, USA
- Department of Pathobiology, St. George's University School of Veterinary Medicine, Grenada
| | - David Marancik
- Department of Pathobiology, St. George's University School of Veterinary Medicine, Grenada
| | - Esteban Soto
- Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California Davis, Davis, California, 95616, USA
| |
Collapse
|
5
|
Vaz Farias TH, Arijo S, Medina A, Pala G, da Rosa Prado EJ, Montassier HJ, Pilarski F, Antonio de Andrade Belo M. Immune responses induced by inactivated vaccine against Aeromonas hydrophila in pacu, Piaractus mesopotamicus. Fish Shellfish Immunol 2020; 101:186-191. [PMID: 32247044 DOI: 10.1016/j.fsi.2020.03.059] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Revised: 03/20/2020] [Accepted: 03/25/2020] [Indexed: 06/11/2023]
Abstract
Aeromonas hydrophila is responsible for outbreaks of a severe infectious disease in fish farms around the world and is one of the major causes of economic losses to the neotropical fish farmers. This study assessed the induction of immune responses and protection against A. hydrophila in pacu, Piaractus mesopotamicus, vaccinated through intraperitoneal and immersion route with inactivated virulent strain. Fish were randomly distributed in three vaccinated groups: intraperitoneal (i.p.) route; immersion; and immersion + booster; and control group (unvaccinated). All vaccination protocols used the concentration of 1.7 × 108 CFU mL-1 of inactivated A. hydrophila., and an oil adjuvant was used for vaccine prepararion for i.p. route vaccination. Blood and skin mucus from 9 fishes per treatment were collected at 14, 28, 42 and 84 days post-vaccination (DPV) for determination of lysozyme concentration in skin mucus, as well as antibodies anti-A. hydrophila in blood serum and skin mucus. Fish were challenged at 84 DPV with homologous and virulent strain of A. hydrophila for evaluation of resistance against bacterial infection. The results demonstrated that vaccination with inactivated A. hydrophila suspension by i.p. or immersion resulted in significant increase of skin mucus lysozyme and specific antibody levels in serum and skin mucus, at 28 and 42 DPV, and this increase in innate and adaptive immunity remained significant in pacu vaccinated through i.p. route up to 84 DPV. Although no significant differences were observed in the survival study, pacu vaccinated through i.p. route presented 31,33% of relative percentage survival (RPS) in LD50-96h when compared unvaccinated fish challenged at 84 DPV. The results observed in this study indicate that vaccination programs with inactivated A. hydrophila, including booster doses by i.p. or immersion routes, could result in more effective protection in pacu against this bacteriosis, by increasing innate and adaptive mucosal and systemic immune responses.
Collapse
Affiliation(s)
- Thais Heloisa Vaz Farias
- Laboratory of Aquatic Organisms Pathology (Lapoa), Aquaculture Center from UNESP (CAUNESP), Rodovia de Acesso Paulo Donato Castellane s/n, CEP 14884-900, Jaboticabal, SP, Brazil
| | - Salvador Arijo
- Department of Microbiology, Faculty of Sciences, University of Malaga, 29071, Malaga, Spain
| | - Alberto Medina
- Department of Microbiology, Faculty of Sciences, University of Malaga, 29071, Malaga, Spain
| | - Gabriela Pala
- Department of Preventive Veterinary Medicine, São Paulo State University (Unesp), Rodovia de Acesso Paulo Donato Castellane s/n, Zona Rural, CEP 14884-012, Jaboticabal, SP, Brazil
| | - Ed Jhonny da Rosa Prado
- Department of Preventive Veterinary Medicine, São Paulo State University (Unesp), Rodovia de Acesso Paulo Donato Castellane s/n, Zona Rural, CEP 14884-012, Jaboticabal, SP, Brazil
| | - Hélio José Montassier
- Department of Microbiology, São Paulo State University (Unesp), Rodovia de Acesso Paulo Donato Castellane s/n, Zona Rural, CEP 14884-012, Jaboticabal, SP, Brazil
| | - Fabiana Pilarski
- Laboratory of Aquatic Organisms Pathology (Lapoa), Aquaculture Center from UNESP (CAUNESP), Rodovia de Acesso Paulo Donato Castellane s/n, CEP 14884-900, Jaboticabal, SP, Brazil
| | - Marco Antonio de Andrade Belo
- Department of Preventive Veterinary Medicine, São Paulo State University (Unesp), Rodovia de Acesso Paulo Donato Castellane s/n, Zona Rural, CEP 14884-012, Jaboticabal, SP, Brazil; Laboratory of Animal Pharmacology and Toxicology, Brazil University, Av. Hilário da Silva Passos, 950, CEP.13690-000, Descalvado, SP, Brazil.
| |
Collapse
|
6
|
Hao EY, Chen H, Wang DH, Huang CX, Tong YG, Chen YF, Zhou RY, Huang RL. Melatonin regulates the ovarian function and enhances follicle growth in aging laying hens via activating the mammalian target of rapamycin pathway. Poult Sci 2020; 99:2185-2195. [PMID: 32241504 PMCID: PMC7587849 DOI: 10.1016/j.psj.2019.11.040] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Revised: 11/11/2019] [Accepted: 11/12/2019] [Indexed: 12/15/2022] Open
Abstract
The signal pathway of target of rapamycin (TOR) plays an important role in regulating cell growth and proliferation, follicular development, and ovulation. Melatonin (N-acetyl-5-methoxytryptamine) (MT) is involved in the regulation of many physiological functions in animals. Recent studies have shown that MT affects the number and the degree of maturation of follicles in the ovary, but there are few studies concerning its mechanism. Therefore, the aim of this study was to investigate the mechanism of TOR signal pathway in the regulation of ovarian function by MT in aging laying hens. In the present study, a total of 60 hens (70-week-old) were randomly divided into 2 groups: control group and melatonin group (M). Melatonin was administered intraperitoneally at a dose of 20 mg/kg/D for 28 D in the M group. The results showed that MT significantly increased the levels of the antioxidant enzymes superoxide dismutase and total antioxidant capacity (P < 0.01) as well as levels of immunoglobulin (IgA, IgG, and IgM) (P < 0.05) and the reproductive hormones estradiol and luteinizing hormone (P < 0.01) in the plasma and also increased the numbers of middle white follicles and small white follicles (P < 0.05) and decreased the level of reactive oxygen species in plasma (P < 0.01) in laying hens. There were higher expression levels in MT receptor A (P < 0.05), melatonin receptor B (P < 0.01), and tuberous sclerosis complex 2 (P < 0.01). Activation of TOR, 4E binding protein-l (4E-BP1), and ribosomal protein 6 kinase (P < 0.01) was found in the M. The levels of mTOR and p-mTOR protein were increased in the M (P < 0.05). The mTORC1-dependent 4E-BP1 and p-4E-BP1 were increased in the M (P < 0.05). This study indicated that MT may enhance follicle growth by increasing levels of antioxidant enzymes and reproductive hormones and by activating the mTOR and downstream components in aging laying hens.
Collapse
Affiliation(s)
- Er-Ying Hao
- College of Animal Science and Technology, Hebei Agricultural University, Baoding Hebei 071001, China
| | - Hui Chen
- College of Animal Science and Technology, Hebei Agricultural University, Baoding Hebei 071001, China
| | - De-He Wang
- College of Animal Science and Technology, Hebei Agricultural University, Baoding Hebei 071001, China
| | - Chen-Xuan Huang
- College of Animal Science and Technology, Hebei Agricultural University, Baoding Hebei 071001, China
| | - Ya-Guang Tong
- College of Animal Science and Technology, Hebei Agricultural University, Baoding Hebei 071001, China
| | - Yi-Fan Chen
- College of Animal Science and Technology, Hebei Agricultural University, Baoding Hebei 071001, China
| | - Rong-Yan Zhou
- College of Animal Science and Technology, Hebei Agricultural University, Baoding Hebei 071001, China
| | - Ren-Lu Huang
- College of Animal Science and Technology, Hebei Agricultural University, Baoding Hebei 071001, China.
| |
Collapse
|
7
|
Fernández-Álvarez C, Santos Y. Phenotypic and Molecular Characterization of Lacinutrix venerupis Isolated from Atlantic Horse Mackerel Trachurus trachurus. J Aquat Anim Health 2019; 31:320-327. [PMID: 31743945 DOI: 10.1002/aah.10085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Accepted: 08/08/2019] [Indexed: 06/10/2023]
Abstract
The aim of the present study was to characterize two gram-negative bacterial strains that were isolated from diseased Atlantic Horse Mackerel Trachurus trachurus in 2017. Based on the results obtained from the biochemical and chemotaxonomic characterization, the isolates were identified as Lacinutrix spp. The highest similarity of the 16S rRNA gene sequences was obtained with the strain L. venerupis CECT 8573T (99.1%), while other species showed similarities of 98% (L. jangbogonensis) and 97% (L. algicola and L. mariniflava). Molecular characterization by repetitive element (REP)-PCR and enterobacterial repetitive intergenic consensus (ERIC)-PCR, as well as proteomic characterization by matrix-assisted laser desorption/ionization-time of flight mass spectrometry (MALDI-TOF-MS), demonstrated heterogeneity between the strains from the Atlantic Horse Mackerel and the type strain, CECT 8573T . The virulence of one of the isolates for Turbot Scophthalmus maximus, European Sea Bass Dicentrarchus labrax, Senegalese Sole Solea senegalensis, and Rainbow Trout Oncorhynchus mykiss was assessed under experimental conditions. No mortalities were recorded after intraperitoneal injections with high doses of bacteria (1 × 109 CFU/mL). Thus, further studies are necessary to elucidate the impact of this bacterial species as a fish pathogen.
Collapse
Affiliation(s)
- Clara Fernández-Álvarez
- Department of Microbiology and Parasitology, University of Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Ysabel Santos
- Department of Microbiology and Parasitology, University of Santiago de Compostela, 15782, Santiago de Compostela, Spain
| |
Collapse
|
8
|
Ramírez-Paredes JG, Mendoza-Roldan MA, Lopez-Jimena B, Shahin K, Metselaar M, Thompson KD, Penman DJ, Richards RH, Adams A. Whole cell inactivated autogenous vaccine effectively protects red Nile tilapia (Oreochromis niloticus) against francisellosis via intraperitoneal injection. J Fish Dis 2019; 42:1191-1200. [PMID: 31184398 DOI: 10.1111/jfd.13041] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Revised: 05/03/2019] [Accepted: 05/07/2019] [Indexed: 06/09/2023]
Abstract
Francisella noatunensis subsp. orientalis is a pathogen of tilapia and other warm-water fish for which no vaccines are commercially available. In this study, a whole cell formalin-inactivated vaccine was developed for the first time using the highly virulent isolate STIR-GUS-F2f7 and the oil-based adjuvant Montanide™ ISA 763A VG. The efficacy of the vaccine was assessed in red Nile tilapia via intraperitoneal (i.p.) injection using homologous experimental infection and correlates of protection such as seral antibody production and bacterial loads in the spleen. For immunization, fish were i.p. injected with 0.1 ml of the vaccine, the adjuvant alone or PBS. At 840 degree days post-vaccination, all fish were i.p. injected with 4.0 × 103 CFU/fish of pathogenic bacteria. The RPS at the end of the trial was 100% in the vaccinated group with significantly higher survival than in the adjuvant and control groups. The RPS in the adjuvant group was 42%, and no significant difference was seen in survival between this and the PBS group. Moreover, significantly higher antibody titres in the serum and significantly lower bacterial loads in the spleen were detected in the vaccinated fish by ELISA and qPCR, respectively. These findings highlight the potential of autogenous vaccines for controlling francisellosis in tilapia.
Collapse
Affiliation(s)
| | | | - Benjamin Lopez-Jimena
- Faculty of Natural Sciences, Institute of Aquaculture, University of Stirling, Stirling, UK
| | - Khalid Shahin
- Faculty of Natural Sciences, Institute of Aquaculture, University of Stirling, Stirling, UK
| | | | - Kim D Thompson
- Aquaculture Research Group, Moredun Research Institute, Edinburgh, UK
| | - David J Penman
- Faculty of Natural Sciences, Institute of Aquaculture, University of Stirling, Stirling, UK
| | - Randolph H Richards
- Faculty of Natural Sciences, Institute of Aquaculture, University of Stirling, Stirling, UK
| | - Alexandra Adams
- Faculty of Natural Sciences, Institute of Aquaculture, University of Stirling, Stirling, UK
| |
Collapse
|
9
|
Shahin K, Shinn AP, Metselaar M, Ramirez-Paredes JG, Monaghan SJ, Thompson KD, Hoare R, Adams A. Efficacy of an inactivated whole-cell injection vaccine for nile tilapia, Oreochromis niloticus (L), against multiple isolates of Francisella noatunensis subsp. orientalis from diverse geographical regions. Fish Shellfish Immunol 2019; 89:217-227. [PMID: 30951851 DOI: 10.1016/j.fsi.2019.03.071] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2019] [Revised: 03/26/2019] [Accepted: 03/28/2019] [Indexed: 06/09/2023]
Abstract
Francisellosis, induced by Francisella noatunensis subsp. orientalis (Fno), is an emerging bacterial disease representing a major threat to the global tilapia industry. There are no commercialised vaccines presently available against francisellosis for use in farmed tilapia, and the only available therapeutic practices used in the field are either the prolonged use of antibiotics or increasing water temperature. Recently, an autogenous whole cell-adjuvanted injectable vaccine was developed that gave 100% relative percent survival (RPS) in tilapia challenged with a homologous isolate of Fno. In this study, we evaluated the efficacy of this vaccine against challenge with heterologous Fno isolates. Healthy Nile tilapia, Oreochromis niloticus (∼15 g) were injected intraperitoneally (i.p.) with the vaccine, adjuvant-alone or phosphate buffer saline (PBS) followed by an i.p. challenge with three Fno isolates from geographically distinct locations. The vaccine provided significant protection in all groups of vaccinated tilapia, with a significantly higher RPS of 82.3% obtained against homologous challenge, compared to 69.8% and 65.9% with the heterologous challenges. Protection correlated with significantly higher specific antibody responses, and western blot analysis demonstrated cross-isolate antigenicity with fish sera post-vaccination and post-challenge. Moreover, a significantly lower bacterial burden was detected by qPCR in conjunction with significantly greater expression of IgM, IL-1 β, TNF-α and MHCII, 72 h post-vaccination (hpv) in spleen samples from vaccinated tilapia compared to fish injected with adjuvant-alone and PBS. The Fno vaccine described in this study may provide a starting point for development a broad-spectrum highly protective vaccine against francisellosis in tilapia.
Collapse
Affiliation(s)
- Khalid Shahin
- Institute of Aquaculture, Faculty of Natural Sciences, University of Stirling, Stirling, FK9 4LA, Scotland, UK; Aquatic Animal Diseases Lab, Aquaculture Department, National Institute of Oceanography and Fisheries (NIOF), P.O. Box 43511, Suez, Egypt.
| | - Andrew P Shinn
- Fish Vet Group Asia, 21/359 Premjairard Road, Chonburi, 20130, Thailand
| | - Matthijs Metselaar
- Benchmark Animal Health, Bush House, Edinburgh Technopole, Midlothian, Edinburgh, EH26 0BB, UK
| | | | - Sean J Monaghan
- Institute of Aquaculture, Faculty of Natural Sciences, University of Stirling, Stirling, FK9 4LA, Scotland, UK
| | - Kim D Thompson
- Moredun Research Institute, Pentlands Science Park, Bush Loan, Midlothian, EH26 0PZ, UK
| | - Rowena Hoare
- Institute of Aquaculture, Faculty of Natural Sciences, University of Stirling, Stirling, FK9 4LA, Scotland, UK
| | - Alexandra Adams
- Institute of Aquaculture, Faculty of Natural Sciences, University of Stirling, Stirling, FK9 4LA, Scotland, UK
| |
Collapse
|
10
|
Abu-Elala NM, Samir A, Wasfy M, Elsayed M. Efficacy of Injectable and Immersion Polyvalent Vaccine against Streptococcal Infections in Broodstock and Offspring of Nile tilapia (Oreochromis niloticus). Fish Shellfish Immunol 2019; 88:293-300. [PMID: 30807857 DOI: 10.1016/j.fsi.2019.02.042] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Revised: 02/18/2019] [Accepted: 02/19/2019] [Indexed: 05/19/2023]
Abstract
A vaccine against streptococcosis, lactococcosis and enterococcosis in tilapia was formulated, ME-VAC Aqua Strept, as a polyvalent inactivated vaccine containing Streptococcus agalactiae, S. iniae, Lactococcus garvieae and Enterococcus faecalis along with a nano-particulate adjuvant. Use of ME-VAC Aqua Strept by injection or immersion resulted in an improved non-specific and adaptive immunity of broodstock and offspring. Intra-peritoneal vaccination of tilapia broodstock increased the total leukocyte count, phagocytosis, lysozyme activity, antibody titer, number of seeds/vaccinated broodstock, seeds quality and survival rates. Also, immersion mass vaccination of tilapia larvae provided a long period of protection up to three months, with a relative percent of survivability (RPS) not less than 60% at this time. To our knowledge, this vaccine may be the first to offer a combined protection against streptococcosis, lactococcosis and enterococcosis in tilapia. The results support the use of this vaccine as an effective tool for disease control and well-being of fish.
Collapse
Affiliation(s)
- Nermeen M Abu-Elala
- Department of Fish Diseases and Management, Faculty of Veterinary Medicine, Cairo University, Giza, 12211, Egypt.
| | - Ahmed Samir
- Department of Microbiology, Faculty of Veterinary Medicine, Cairo University, Giza, 12211, Egypt.
| | - Momtaz Wasfy
- Middle East for Veterinary Vaccines Company, Second Industrial Area, ElSalihya El-Gededa, El-Sharkia, 44671, Egypt.
| | - Magdy Elsayed
- Department of Infectious Disease, Faculty of Veterinary Medicine, Cairo University, Egypt. Middle East for Veterinary Vaccines Company, Second Industrial Area, ElSalihya El-Gededa, El-Sharkia, 44671, Egypt.
| |
Collapse
|
11
|
Huang L, Zhang Y, He R, Zuo Z, Luo Z, Xu W, Yan Q. Phenotypic characterization, virulence, and immunogenicity of Pseudomonas plecoglossicida rpoE knock-down strain. Fish Shellfish Immunol 2019; 87:772-777. [PMID: 30776544 DOI: 10.1016/j.fsi.2019.02.028] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Revised: 02/13/2019] [Accepted: 02/15/2019] [Indexed: 06/09/2023]
Abstract
Pseudomonas plecoglossicida, a temperature dependent bacterial pathogen in fish, expresses rpoE gene that is sensitive to temperature and probably critical for pathogen virulence and disease development. In this study, the rpoE silence strain rpoE-RNAi-1 was constructed by gene knock-down. The rpoE-RNAi-1 displayed significant changes in biofilm formation, swarming motility, adhesion and virulence. Meanwhile, vaccination of grouper with rpoE-RNAi-1 led to a relative percent survival (RPS) value of 85% after challenged with the wild-type P. plecoglossicida. qRT-PCR assays showed that vaccination with rpoE-RNAi-1 enhanced the expression of immune-related genes, including MHC-I, MHC-II, IgM, and IL-1β, indicating that it was able to induce humoral and cell-mediated immune response in grouper. These results validated the possibility of rpoE as a potential target for constructing P. plecoglossicida live attenuated vaccine.
Collapse
Affiliation(s)
- Lixing Huang
- Fisheries College, Key Laboratory of Healthy Mariculture for the East China Sea, Ministry of Agriculture, Jimei University, Xiamen, Fujian, PR China.
| | - Youyu Zhang
- Institute of Electromagnetics and Acoustics, School of Electronic Science and Engineering, Xiamen University, Xiamen, Fujian, PR China
| | - Rongchao He
- Fisheries College, Key Laboratory of Healthy Mariculture for the East China Sea, Ministry of Agriculture, Jimei University, Xiamen, Fujian, PR China
| | - Zhenghong Zuo
- School of Life Sciences, Xiamen University, Xiamen, Fujian, PR China
| | - Zhuhua Luo
- Third Institute of Oceanography, State Oceanic Administration, Xiamen, 361005, PR China
| | - Wei Xu
- Third Institute of Oceanography, State Oceanic Administration, Xiamen, 361005, PR China
| | - Qingpi Yan
- Fisheries College, Key Laboratory of Healthy Mariculture for the East China Sea, Ministry of Agriculture, Jimei University, Xiamen, Fujian, PR China.
| |
Collapse
|
12
|
Liu S, Du Y, Sheng X, Tang X, Xing J, Zhan W. Molecular cloning of polymeric immunoglobulin receptor-like (pIgRL) in flounder (Paralichthys olivaceus) and its expression in response to immunization with inactivated Vibrio anguillarum. Fish Shellfish Immunol 2019; 87:524-533. [PMID: 30710627 DOI: 10.1016/j.fsi.2019.01.039] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Revised: 01/19/2019] [Accepted: 01/25/2019] [Indexed: 06/09/2023]
Abstract
In the present work, the polymeric immunoglobulin receptor-like (pIgRL) from flounder (Paralichthys olivaceus) was firstly cloned and identified. The full length cDNA of flounder pIgRL was of 1393 bp including an open reading frame of 1053 bp, and the deduced pIgRL sequence encoded 350 amino acids, with a predicted molecular mass of 39 kDa. There were two immunoglobulin-like domains in flounder pIgRL. In healthy flounder, the transcriptional level of pIgRL was detected in different tissues by real-time PCR, showing the highest level in the skin and gills, and higher levels in the spleen and hindgut. After flounders were vaccinated with inactivated Vibrio anguillarum via intraperitoneal injection and immersion, the pIgRL mRNA level increased firstly and then declined in all tested tissues during 48 h, and the maximum expression levels in the gills, skin, spleen and hindgut in immersion group, or in the spleen, head kidney, skin and gills in injection group, were higher than in other tested tissues. In addition, recombinant protein of the extracellular region of flounder pIgRL was expressed in Escherichia coli BL21 (DE3), and rabbit anti-pIgRL polyclonal antibodies were prepared, which specifically reacted with the recombinant pIgRL, and a 39 kDa protein confirmed as natural pIgRL by liquid chromatography-mass spectrometry in skin mucus of flounder. Co-immunoprecipitation assay and western-blotting demonstrated that the pIgRL, together with IgM, could be immunoprecipitated by anti-pIgRL antibody in gut, skin and gill mucus of flounder, suggesting the existence of pIgRL-IgM complexes. These results indicated that the flounder pIgRL was probably involved in the mucosal IgM transportation and played important roles in mucosal immunity.
Collapse
Affiliation(s)
- Susu Liu
- Laboratory of Pathology and Immunology of Aquatic Animals, KLMME, Ocean University of China, 5 Yushan Road, Qingdao, 266003, PR China
| | - Yang Du
- Laboratory of Pathology and Immunology of Aquatic Animals, KLMME, Ocean University of China, 5 Yushan Road, Qingdao, 266003, PR China
| | - Xiuzhen Sheng
- Laboratory of Pathology and Immunology of Aquatic Animals, KLMME, Ocean University of China, 5 Yushan Road, Qingdao, 266003, PR China.
| | - Xiaoqian Tang
- Laboratory of Pathology and Immunology of Aquatic Animals, KLMME, Ocean University of China, 5 Yushan Road, Qingdao, 266003, PR China
| | - Jing Xing
- Laboratory of Pathology and Immunology of Aquatic Animals, KLMME, Ocean University of China, 5 Yushan Road, Qingdao, 266003, PR China
| | - Webin Zhan
- Laboratory of Pathology and Immunology of Aquatic Animals, KLMME, Ocean University of China, 5 Yushan Road, Qingdao, 266003, PR China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266071, PR China
| |
Collapse
|
13
|
Farid AH, Hussain I. A comparison between intraperitoneal injection and intranasal and oral inoculation of mink with Aleutian mink disease virus. Res Vet Sci 2019; 124:85-92. [PMID: 30856435 DOI: 10.1016/j.rvsc.2019.02.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Revised: 02/19/2019] [Accepted: 02/24/2019] [Indexed: 01/19/2023]
Abstract
Intranasal, with (INS) and without (IN) sedation, and oral inoculation were compared with intraperitoneal (IP) injection for establishing infection with a local isolate of Aleutian mink disease virus (AMDV) in 35 American mink. Blood samples were collected on 0, 21, 36 and 56 day post-inoculation (dpi). Antiviral-antibodies and viral DNA in plasma and tissues were measured by counter-immunoelectrophoresis (CIEP) and PCR, respectively. The presence of AMDV DNA was tested by PCR in saliva, rectal and fecal samples collected on 0, 6, 10, 15, 21, 28, 36 and 56 dpi. Animals were killed at 56 dpi, samples of six organs were tested for antibody and AMDV DNA, and samples of the lungs, liver, kidneys and heart were subjected to histology. Viral DNA was detected in the spleen, lungs and lymph nodes of all inoculated mink on 56 dpi, indicating that all inoculation routes caused infection in mink. Viral DNA and antibodies were detected in plasma of all IP and INS inoculated mink by 36 dpi, but some animals which were inoculated orally or via IN remained seronegative by 56 dpi. It was concluded that INS route was the most effective method for establishing infection in mink without breaking the integrity of the animals' anatomical barriers. Viremia was short-lived in some mink, whereas antibody production persisted in seroconverted animals during the duration of the experiment. Saliva, rectal and fecal samples did not accurately detect infection. Histologic lesions of AD were observed on the four organs of most mink.
Collapse
Affiliation(s)
- A Hossain Farid
- Department of Animal Science and Aquaculture, Dalhousie University Faculty of Agriculture, Truro, Nova Scotia B2N 5E3, Canada.
| | - Irshad Hussain
- Department of Animal Science and Aquaculture, Dalhousie University Faculty of Agriculture, Truro, Nova Scotia B2N 5E3, Canada
| |
Collapse
|
14
|
Galindo-Villegas J, García-Alcazar A, Meseguer J, Mulero V. Aluminum adjuvant potentiates gilthead seabream immune responses but induces toxicity in splenic melanomacrophage centers. Fish Shellfish Immunol 2019; 85:31-43. [PMID: 29510253 DOI: 10.1016/j.fsi.2018.02.047] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Revised: 02/24/2018] [Accepted: 02/27/2018] [Indexed: 06/08/2023]
Abstract
A key goal of a successful vaccine formulation is the strong induction of persistent protective immune responses without producing side-effects. Adjuvants have been proved to be successful in several species at inducing increased immune responses against poorly immunogenic antigens. Fish are not the exception and promising results of adjuvanted vaccine formulations in many species are needed. In this study, over a period of 300 days, we characterized the apparent damage and immune response in gilthead seabream immunized by intraperitoneal injection with the model antigen keyhole limpet hemocyanin (KLH) alone or formulated with Montanide ISA water-in-oil (761 or 763), or Imject™ aluminum hydroxide (aluminium), as adjuvants. Throughout the trial, external tissue damage was examined visually, but no change was observed. Internally, severe adhesions, increased fat tissue, and hepatomegaly were recorded, but, without impairing animal health. At 120 days post priming (dpp), histopathological evaluations of head-kidney, spleen and liver revealed the presence of altered melanomacrophage centers (MMC) in HK and spleen, but not in liver. Surprisingly, in all aluminium treated fish, classical stains unmasked a toxic effect on splenic-MMC, unequivocally characterized by a strong cell depletion. Furthermore, at 170 dpp transmission electron microscopy confirmed this data. Paradoxically, at the same time powerful immune responses were recorded in most vaccinated groups, including the aluminium treatment. Whatever the case, despite the observed adhesions and MMC depletion, fish physiology was not affected, and most side-effects were resolved after 300 dpp. Therefore, our data support adjuvant inclusion, but strongly suggest that use of aluminium must be further explored in detail before it might benefit the rational design of new vaccination strategies in aquaculture.
Collapse
Affiliation(s)
- Jorge Galindo-Villegas
- Department of Cell Biology and Histology, Faculty of Biology, Institute of Biomedical Research of Murcia-Arrixaca, Campus Universitario de Espinardo, University of Murcia, 30100 Murcia, Spain.
| | | | - José Meseguer
- Department of Cell Biology and Histology, Faculty of Biology, Institute of Biomedical Research of Murcia-Arrixaca, Campus Universitario de Espinardo, University of Murcia, 30100 Murcia, Spain
| | - Victoriano Mulero
- Department of Cell Biology and Histology, Faculty of Biology, Institute of Biomedical Research of Murcia-Arrixaca, Campus Universitario de Espinardo, University of Murcia, 30100 Murcia, Spain.
| |
Collapse
|
15
|
Pascoli F, Guazzo A, Buratin A, Toson M, Buonocore F, Scapigliati G, Toffan A. Lack of in vivo cross-protection of two different betanodavirus species RGNNV and SJNNV in European sea bass Dicentrachus labrax. Fish Shellfish Immunol 2019; 85:85-89. [PMID: 29056488 DOI: 10.1016/j.fsi.2017.10.033] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Revised: 09/20/2017] [Accepted: 10/18/2017] [Indexed: 05/19/2023]
Abstract
Viral encephalopathy and retinopathy (VER) is a severe infective disease characterized by neuropathological changes in several fish species associated with high mortality. The etiological agent is a virus belonging to the Nodaviridae family, genus Betanodavirus. To date, four different betanodavirus species have been officially recognized by International Committee on Taxonomy of Viruses (ICTV), namely the red-spotted grouper- (RGNNV), the striped jack- (SJNNV), the barfin flounder- (BFNNV) and the tiger puffer nervous necrosis virus (TPNNV). Moreover, two reassortants RGNNV/SJNNV and SJNNV/RGNNV have been described. Betanodaviruses can be classified into three different serotypes (A, B and C) that are antigenically different, so none (between serotype A and C) or partial (between serotype B and C) cross-immunoreactivity has been detected in vitro. In this study we investigated the in vivo cross-protection of the two main betanodavirus species (RGNNV and SJNNV), which belong to distinct serotype, by immunizing intraperitoneally (IP) juvenile sea bass with formalin inactivated RGNNV and SJNNV vaccines, followed by a challenge with RGNNV. Fish IP vaccinated with inactivated RGNNV showed a high protection value (85%). Serological analyses highlighted a great specific anti-NNV immunoglobulin M (IgM) production against the homologous virus, while a good seroconversion with low neutralization property was highlighted against the heterologous virus. In fish IP vaccinated with inactivated SJNNV the protection recorded was equal to 25%, significantly lower respect to the one provided by RGNNV IP vaccine. ELISA test detected good IgM production against the homologous virus, and a lower, but still detectable IgM production against the heterologous one. By contrast, serum neutralization test highlighted a poorly detectable antibody production unable to neutralize either the homologous or the heterologous virus. These results confirm that the two serotypes are not cross-protective in vivo. According to these findings, the production of multivalent formulation, or at least the provision of different types of vaccines based on both fish and virus species requirement, should be recommended in order to broaden the range of protection.
Collapse
Affiliation(s)
- Francesco Pascoli
- Istituto Zooprofilattico Sperimentale delle Venezie, National Reference Laboratory (NRL) for Diseases of Fish, Mollusk and Crustacean, Legnaro, PD, Italy.
| | - Andrea Guazzo
- Istituto Zooprofilattico Sperimentale delle Venezie, National Reference Laboratory (NRL) for Diseases of Fish, Mollusk and Crustacean, Legnaro, PD, Italy
| | - Alessandra Buratin
- Istituto Zooprofilattico Sperimentale delle Venezie, National Reference Laboratory (NRL) for Diseases of Fish, Mollusk and Crustacean, Legnaro, PD, Italy
| | - Marica Toson
- Istituto Zooprofilattico Sperimentale delle Venezie, Aquatic Animal Epidemiology Laboratory, Legnaro, PD, Italy
| | - Francesco Buonocore
- Department for Innovation in Biological, Agro-food and Forest Systems, University of Tuscia, Viterbo, Italy
| | - Giuseppe Scapigliati
- Department for Innovation in Biological, Agro-food and Forest Systems, University of Tuscia, Viterbo, Italy
| | - Anna Toffan
- Istituto Zooprofilattico Sperimentale delle Venezie, National Reference Laboratory (NRL) for Diseases of Fish, Mollusk and Crustacean, Legnaro, PD, Italy
| |
Collapse
|
16
|
Tachibana T, Ueoka W, Khan MSI, Makino R, Cline MA. Compound 48/80 reduces the crop-emptying rate, likely through a histamine-associated pathway in chicks. Domest Anim Endocrinol 2019; 66:57-63. [PMID: 30472035 DOI: 10.1016/j.domaniend.2018.10.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Revised: 08/31/2018] [Accepted: 10/11/2018] [Indexed: 11/15/2022]
Abstract
Infectious conditions are associated with reduced food passage through the digestive tract in both mammals and chicks; however, the precise mechanism mediating this response in chicks remains unclear. The purpose of the present study was to determine if mast cells, a blood cell type which plays an important role in the immune system, might affect food passage through the digestive tract in chicks. Specifically, we performed intraperitoneal (IP) injections of compound 48/80, an inducer of mast cell degranulation, and measured crop emptying. The IP injection of compound 48/80 significantly reduced the crop-emptying rate, but it did not affect the proventriculus to small intestine transit rate or the number of defecations. We also found that IP-injected histamine, which is secreted by mast cells, also reduced the crop-emptying rate. In addition, IP injection of 2-pyridylethylamine (histamine H1 receptor agonist), but not dimaprit, (R)-(-)-α-methylhistamine, and VUF8430 (histamine H2, H3, and H4 receptor agonists, respectively), reduced the crop-emptying rate, implying that histamine reduces the crop emptying rate via the histamine H1 receptor. Finally, we found that IP injection of compound 48/80 reduced mRNA expression of histidine decarboxylase, a rate-limiting enzyme for histamine synthesis, in the esophagus and proventriculus at 1 h and the proventriculus and duodenum at 3 h after the injection. In sum, the present study suggests that the degranulation of mast cells causes a reduction in the crop-emptying rate, possibly via the histamine pathway in chicks.
Collapse
Affiliation(s)
- Tetsuya Tachibana
- Department of Agrobiological Science, Faculty of Agriculture, Ehime University, Matsuyama 790-8566, Japan.
| | - Wataru Ueoka
- Department of Agrobiological Science, Faculty of Agriculture, Ehime University, Matsuyama 790-8566, Japan
| | - Md Sakirul Islam Khan
- Department of Anatomy and Embryology, Ehime University, Graduate School of Medicine, Toon, Ehime 791-0295, Japan
| | - Ryosuke Makino
- Department of Agrobiological Science, Faculty of Agriculture, Ehime University, Matsuyama 790-8566, Japan
| | - Mark A Cline
- Department of Animal and Poultry Sciences, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA
| |
Collapse
|
17
|
Carballo C, Chronopoulou EG, Letsiou S, Maya C, Labrou NE, Infante C, Power DM, Manchado M. Antioxidant capacity and immunomodulatory effects of a chrysolaminarin-enriched extract in Senegalese sole. Fish Shellfish Immunol 2018; 82:1-8. [PMID: 30064015 DOI: 10.1016/j.fsi.2018.07.052] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Revised: 07/20/2018] [Accepted: 07/27/2018] [Indexed: 05/08/2023]
Abstract
The microalgae are an important source of bioactive molecules including β-glucans that can be used as immunostimulants in aquaculture. In the present study, the antioxidant capacity, cytotoxicity and immunomodulatory activity of a chrysolaminarin-enriched extract obtained from the diatom Phaeodactylum tricornutum was evaluated. The extract showed a higher total antioxidant activity as determined by ORAC and FRAP assays and a lower DPPH scavenging activity than particulate yeast-β-glucan. The cytotoxicity test indicated that extract concentrations higher than 0.01% w/v could impair cell viability of human dermal fibroblasts. To evaluate the immunomodulatory activity, juvenile soles were intraperitoneally injected with the chrysolaminarin-enriched extract suspended in coconut oil (1 mg/fish) followed by a reinjection at 7 days. A sham group injected with the carrier solution was maintained as a negative control. Cumulated mortality of fish injected with the chrysolaminarin-enriched extract was 29.4% after six days and no mortality was recorded after extract reinjection. Expression analyses of fifteen genes related to the innate immune system in kidney, spleen and intestine showed temporal and organ-specific responses. A rapid (2 days post-injection; dpi) and strong induction of the pro-inflammatory il1b and the antimicrobial peptide hamp1 in the three immunological organs, the hsp90aa in kidney and spleen, irf3 in intestine and c3 in spleen was observed indicating a potent inflammatory response. The recovery of steady-state levels for all activated genes at 5 dpi, and the down-regulation of c-lectin receptor as well as some interferon-related genes (ifn1, irf1, irf3, irf8, irf9 and mx) in kidney and cxc10 in spleen indicated that the soles were able to activate a homeostatic response against the β-glucan insult. The reinjection of the chrysolaminarin-enriched extract did not activate a new inflammatory response but reduced the mRNA levels of hsp90aa and irf3 indicating that soles developed some resistance to β-glucans. Overall, these results reveal this enriched extract as a novel and potent source of β-glucans with antioxidant and immunomodulatory capacity suitable for immunostimulation in aquaculture.
Collapse
Affiliation(s)
- Carlos Carballo
- IFAPA Centro El Toruño, Junta de Andalucía, Camino Tiro Pichón s/n, 11500, El Puerto de Santa María, Spain
| | - Evangelia G Chronopoulou
- Laboratory of Enzyme Technology, Department of Biotechnology, School of Food, Biotechnology and Development, Agricultural University of Athens, Athens, Greece
| | - Sofia Letsiou
- Laboratory of Biochemistry, Scientific Affairs Department, APIVITA S.A., Athens, Greece
| | - Claudia Maya
- Fitoplanton Marino S.L., 11500, El Puerto de Santa María, Spain
| | - Nikolaos E Labrou
- Laboratory of Enzyme Technology, Department of Biotechnology, School of Food, Biotechnology and Development, Agricultural University of Athens, Athens, Greece
| | - Carlos Infante
- Fitoplanton Marino S.L., 11500, El Puerto de Santa María, Spain
| | - Deborah M Power
- Comparative Molecular Endocrinology Group, Marine Science Center (CCMAR), Universidade do Algarve, 8005-139, Faro, Portugal
| | - Manuel Manchado
- IFAPA Centro El Toruño, Junta de Andalucía, Camino Tiro Pichón s/n, 11500, El Puerto de Santa María, Spain.
| |
Collapse
|
18
|
Guo Z, Lin Y, Wang X, Fu Y, Lin W, Lin X. The protective efficacy of four iron-related recombinant proteins and their single-walled carbon nanotube encapsulated counterparts against Aeromonas hydrophila infection in zebrafish. Fish Shellfish Immunol 2018; 82:50-59. [PMID: 30086377 DOI: 10.1016/j.fsi.2018.08.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Revised: 07/27/2018] [Accepted: 08/03/2018] [Indexed: 06/08/2023]
Abstract
Iron-related proteins play important roles in iron homeostasis, and they may be potential vaccine candidates against pathogenic Aeromonas hydrophila. In addition, the encapsulation of antigens in single-walled carbon nanotubes (SWCNTs) has recently been shown to effectively stimulate the host immune response. To investigate the immune response of zebrafish to iron-related proteins and SWCNT-encapsulated proteins, we overexpressed and purified four iron-related recombinant proteins (P55870, A0KGK5, A0KPP0, and A0KIY3) from A. hydrophila. We then vaccinated zebrafish with these proteins and their SWCNT-encapsulated counterparts via both intraperitoneal injection and bath immunization. The target proteins evoked an immune response in zebrafish after intraperitoneal injection, and SWCNT-encapsulation significantly increased the immune response after bath immunization. When challenged with virulent A. hydrophila, zebrafish administered 5 μg intraperitoneal injections of SWCNT-P55870, A0KGK5, A0KPP0, or A0KIY3 had remarkably high relative percent survivals (RPSs) (50%, 55.6%, 66.7%, and 94.44% respectively). The RPSs of zebrafish vaccinated via immunization bath with 40 mg/L SWCNT-encapsulated counterparts were also high (52.94%, 55.56%, 61.11%, and 86.11%, respectively). These results indicated that zebrafish vaccinated with P55870, A0KGK5, SWCNT-P55870, and SWCNT-A0KGK5 were partially protected, while A0KPP0 and A0KIY3 were promising vaccine candidates against pathogenic A. hydrophila infection.
Collapse
Affiliation(s)
- Zhuang Guo
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 35002, PR China; Key Laboratory of Crop Ecology and Molecular Physiology (Fujian Agriculture and Forestry University), Fujian Province University, Fuzhou 35002, PR China
| | - Yuexu Lin
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 35002, PR China; Key Laboratory of Crop Ecology and Molecular Physiology (Fujian Agriculture and Forestry University), Fujian Province University, Fuzhou 35002, PR China
| | - Xiaoyun Wang
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 35002, PR China; Key Laboratory of Crop Ecology and Molecular Physiology (Fujian Agriculture and Forestry University), Fujian Province University, Fuzhou 35002, PR China
| | - Yuying Fu
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 35002, PR China; Key Laboratory of Crop Ecology and Molecular Physiology (Fujian Agriculture and Forestry University), Fujian Province University, Fuzhou 35002, PR China
| | - Wenxiong Lin
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 35002, PR China; Key Laboratory of Crop Ecology and Molecular Physiology (Fujian Agriculture and Forestry University), Fujian Province University, Fuzhou 35002, PR China
| | - Xiangmin Lin
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 35002, PR China; Key Laboratory of Crop Ecology and Molecular Physiology (Fujian Agriculture and Forestry University), Fujian Province University, Fuzhou 35002, PR China.
| |
Collapse
|
19
|
Na-Phatthalung P, Teles M, Voravuthikunchai SP, Tort L, Fierro-Castro C. Immune-related gene expression and physiological responses in rainbow trout (Oncorhynchus mykiss) after intraperitoneal administration of Rhodomyrtus tomentosa leaf extract: A potent phytoimmunostimulant. Fish Shellfish Immunol 2018; 77:429-437. [PMID: 29571768 DOI: 10.1016/j.fsi.2018.03.035] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Revised: 03/13/2018] [Accepted: 03/17/2018] [Indexed: 06/08/2023]
Abstract
The immunostimulatory effects of Rhodomyrtus tomentosa leaf extract were evaluated in rainbow trout through changes in expression profile of genes involved in innate immune and antioxidant response, hematology and stress indicators. The concentrations of R. tomentosa at 10 and 100 μg per fish were administrated by intraperitoneal injection, alone or in combination with LPS. After 6 h of administration, the gene expression was measured in head kidney, spleen, and intestine. Results indicated that R. tomentosa exerted immunostimulatory effects by inducing the expression of il10, saa, hepcidin, and sod in head kidney and the expression of il10, tgfβ, and inos in intestine. In combination with LPS, the plant suppressed the expression of pro-inflammtory cytokine il1β, il8 and other consisting of saa and gpx1 in head kidney and il1β in spleen, pointing out its anti-inflammatory activities. Furthermore, the plant did not exert any impact on hematological parameters, but it was able to reduce cortisol levels when co-administered with LPS, indicating that R. tomentosa could attenuate stress response in rainbow trout. Our observations suggest that R. tomentosa induced the expression of genes involved in cytokine and innate immune response and modulated the physiological stress response as indicated by the suppressed cortisol in rainbow trout.
Collapse
Affiliation(s)
- Pinanong Na-Phatthalung
- Department of Microbiology and Excellence Research Laboratory on Natural Products, Faculty of Science and Natural Product Research Center of Excellence, Prince of Songkla University, Hat Yai, Songkhla, 90112, Thailand
| | - Mariana Teles
- Department of Cell Biology, Physiology and Immunology, Universitat Autònoma de Barcelona, Barcelona, 08193, Spain; CIIMAR- Interdisciplinary Centre of Marine and Environmental Research, Terminal de Cruzeiros, Portugal.
| | - Supayang Piyawan Voravuthikunchai
- Department of Microbiology and Excellence Research Laboratory on Natural Products, Faculty of Science and Natural Product Research Center of Excellence, Prince of Songkla University, Hat Yai, Songkhla, 90112, Thailand
| | - Lluís Tort
- Department of Cell Biology, Physiology and Immunology, Universitat Autònoma de Barcelona, Barcelona, 08193, Spain
| | - Camino Fierro-Castro
- Department of Cell Biology, Physiology and Immunology, Universitat Autònoma de Barcelona, Barcelona, 08193, Spain.
| |
Collapse
|
20
|
Xu H, Zhao J, Zou Y, Lu B, Chen H, Zhang W, Wu Y, Yang J. Identification, characterization and expression analysis of MAVS in Pelodiscus sinensis after challenge with Poly I:C. Fish Shellfish Immunol 2018; 77:222-232. [PMID: 29609027 DOI: 10.1016/j.fsi.2018.03.054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2017] [Revised: 03/19/2018] [Accepted: 03/29/2018] [Indexed: 06/08/2023]
Abstract
Pelodiscus sinensis, which is one of the important reptile species in the aquaculture industry in China, frequently suffers from serious infectious diseases caused by viruses. However, there is a lack of biological knowledge about its antiviral innate immunity. In this study, we identified and characterized the open reading frame (ORF) of PsMAVS cDNA in P. sinensis. It consisted of 2691 nucleotides encoding a protein of 896 amino acid residues, which were composed of an N-terminal CARD, a central proline-rich domain and a C-terminal TM domain. Based on the amino acid sequence, phylogenetic analyses revealed a closer relationship of PsMAVS with those of Chelonia. qRT-PCR analysis indicated that PsMAVS was ubiquitously expressed in all of the examined healthy tissues with different expression levels; it was expressed at high levels in spleen, muscle and heart and at moderate levels in kidney, liver, intestine, intestinum crissum and oesophagus. PsMAVS was detected in embryos at 10 days post hatching, and it gradually upregulated with the embryonic development stage. Its expression levels in the examined tissues were all upregulated significantly after challenge with Poly I:C. The PsMAVS protein was detected in the intestinal tissues from both the challenge and the control groups, and it was distributed widely in the cytoplasm of the intestinal cells, suggesting PsMAVS plays multiple roles in the complicated mechanisms of immune defence against virus invasion in P. sinensis.
Collapse
Affiliation(s)
- Haisheng Xu
- College of Animal Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, Zhejiang Province, China.
| | - Jing Zhao
- College of Animal Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, Zhejiang Province, China
| | - Yiyi Zou
- College of Animal Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, Zhejiang Province, China
| | - Binjie Lu
- College of Animal Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, Zhejiang Province, China
| | - Hanxiang Chen
- College of Animal Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, Zhejiang Province, China
| | - Wanrong Zhang
- College of Animal Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, Zhejiang Province, China
| | - Yue Wu
- College of Animal Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, Zhejiang Province, China
| | - Jinjin Yang
- College of Animal Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, Zhejiang Province, China
| |
Collapse
|
21
|
Alonso JM, Peccinini RG, Campos ML, Nitta TY, Akutagawa TYM, Crescencio AP, Alves ALG, Rodrigues CA, Watanabe MJ, Hussni CA. Plasma and peritoneal fluid concentrations of ceftriaxone after intravenous and intraperitoneal administration in horses. Vet J 2018; 234:72-76. [PMID: 29680398 DOI: 10.1016/j.tvjl.2018.02.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Revised: 02/09/2018] [Accepted: 02/11/2018] [Indexed: 11/17/2022]
Abstract
Intraperitoneal (IP) use of antimicrobial agents may lead to therapeutic effects with better clinical results than intravenous (IV) administration. The aim of this study was to compare plasma and peritoneal fluid concentrations of ceftriaxone after IP and IV administration in horses, and to evaluate possible adverse effects. One group of five horses received 25mg/kg ceftriaxone diluted in 1L saline solution by IP catheter once daily for 5 days, while a second group of five horses received 25mg/kg ceftriaxone diluted in 250mL saline solution by IV injection once daily for 5days and 1L saline solution by IP catheter once daily for 5 days. Peritoneal fluid and plasma were collected to determine ceftriaxone concentrations after the first and fifth administration. IP administration of ceftriaxone resulted in concentrations above a minimum inhibitory concentration (MIC) of 1μg/mL for 24h in peritoneal fluid and for 12h in plasma, while IV administration of ceftriaxone resulted in lower peritoneal fluid concentrations, which remained above a MIC of 1μg/mL for 12h in peritoneal fluid and 10h in plasma. No adverse effects were observed. Comparisons of ceftriaxone concentrations, time of occurrence of the maximum (Tmax) and minimum (Tmin) concentrations, and the mean residence time (MRT), between the two groups showed that IP administration provided greater availability of cephalosporin in peritoneal fluid. The IP use of ceftriaxone (25mg/kg diluted in 1L saline solution once daily) may be useful for the prophylaxis and/or treatment of peritonitis in horses.
Collapse
Affiliation(s)
- J M Alonso
- Department of Veterinary Surgery and Anaesthesiology, São Paulo State University (UNESP), School of Veterinary Medicine and Animal Science, Botucatu, Brazil
| | - R G Peccinini
- Department of Natural Active Principles and Toxicology, São Paulo State University (UNESP), School of Pharmaceutical Sciences, Araraquara, Brazil
| | - M L Campos
- Department of Natural Active Principles and Toxicology, São Paulo State University (UNESP), School of Pharmaceutical Sciences, Araraquara, Brazil
| | - T Y Nitta
- Department of Veterinary Surgery and Anaesthesiology, São Paulo State University (UNESP), School of Veterinary Medicine and Animal Science, Botucatu, Brazil
| | - T Y M Akutagawa
- Department of Veterinary Surgery and Anaesthesiology, São Paulo State University (UNESP), School of Veterinary Medicine and Animal Science, Botucatu, Brazil
| | - A P Crescencio
- Department of Veterinary Surgery and Anaesthesiology, São Paulo State University (UNESP), School of Veterinary Medicine and Animal Science, Botucatu, Brazil
| | - A L G Alves
- Department of Veterinary Surgery and Anaesthesiology, São Paulo State University (UNESP), School of Veterinary Medicine and Animal Science, Botucatu, Brazil
| | - C A Rodrigues
- Department of Veterinary Surgery and Anaesthesiology, São Paulo State University (UNESP), School of Veterinary Medicine and Animal Science, Botucatu, Brazil
| | - M J Watanabe
- Department of Veterinary Surgery and Anaesthesiology, São Paulo State University (UNESP), School of Veterinary Medicine and Animal Science, Botucatu, Brazil
| | - C A Hussni
- Department of Veterinary Surgery and Anaesthesiology, São Paulo State University (UNESP), School of Veterinary Medicine and Animal Science, Botucatu, Brazil.
| |
Collapse
|
22
|
Srivastava A, Nigam AK, Mittal S, Mittal AK. Role of aloin in the modulation of certain immune parameters in skin mucus of an Indian major carp, Labeo rohita. Fish Shellfish Immunol 2018; 73:252-261. [PMID: 29242133 DOI: 10.1016/j.fsi.2017.12.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2017] [Revised: 12/05/2017] [Accepted: 12/10/2017] [Indexed: 06/07/2023]
Abstract
Enhancement of immune system seems to be the most promising method of preventing fish diseases. Several herbal products have immunostimulant properties, and are environmental friendly, economical and can act against a broad spectrum of pathogens. Present study was designed with an aim to evaluate the role of aloin, extracted from a herb Aloe barbadensis, in the modulation of certain immune parameters in an Indian major carp, Labeo rohita. Fishes were divided into control, vehicle control and aloin treated groups. Experiments were conducted for 7 days and fishes from the three groups were analyzed at 2d, 4d, 6d and 8d. The results demonstrated that at different intervals, L. rohita administered with aloin showed a significant increase in the activity of enzymes - lysozyme, protease, carboxylesterase, alkaline phosphatase, acid phosphatase, catalase and peroxidase, and non-enzymatic factors hemagglutinin and alternate complement compared with that of the controls. Thus, it can be concluded that administration of aloin is beneficial in enhancing the immune response and hence it can be used as potent immunostimulant in aquaculture.
Collapse
Affiliation(s)
- Ayan Srivastava
- Skin Physiology Laboratory, Centre of Advanced Study, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi 221 005, Uttar Pradesh, India
| | - Ashwini Kumar Nigam
- Skin Physiology Laboratory, Centre of Advanced Study, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi 221 005, Uttar Pradesh, India
| | - Swati Mittal
- Skin Physiology Laboratory, Centre of Advanced Study, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi 221 005, Uttar Pradesh, India.
| | - Ajay Kumar Mittal
- Skin Physiology Laboratory, Centre of Advanced Study, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi 221 005, Uttar Pradesh, India.
| |
Collapse
|
23
|
Erkinharju T, Lundberg MR, Isdal E, Hordvik I, Dalmo RA, Seternes T. Studies on the antibody response and side effects after intramuscular and intraperitoneal injection of Atlantic lumpfish (Cyclopterus lumpus L.) with different oil-based vaccines. J Fish Dis 2017; 40:1805-1813. [PMID: 28548686 DOI: 10.1111/jfd.12649] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Accepted: 03/28/2017] [Indexed: 06/07/2023]
Abstract
Atlantic lumpfish (Cyclopterus lumpus L.) is used as a biological delousing agent for sea lice (Lepeophtheirus salmonis K.) infestations in Norwegian aquaculture. Here, we present a study on the antibody response and vaccine side effects after intramuscular and intraperitoneal injection of lumpfish with two vaccines. Both vaccines contained bacterial antigens from atypical Aeromonas salmonicida A-layer types V and VI, Vibrio anguillarum serotype O1 and Moritella viscosa sp., but one vaccine contained a vegetable oil-based adjuvant, while the other contained a mineral oil-based adjuvant. Intramuscular injection of the mineral oil-based vaccine caused a high acute mortality of fish within 48 hr after immunization. Intraperitoneal injection of the mineral oil-based vaccine resulted in a lower severity of intra-abdominal side effects than the vegetable oil-based vaccine. Intramuscular injection of the mineral oil-based vaccine resulted in a significantly higher antibody response against A. salmonicida when compared to controls and the vegetable oil-based vaccine group. The antibody response was poor against V. anguillarum and M. viscosa for all groups. Our results indicate that intramuscular injection of oil-based vaccines might be feasible for providing immunological protection for Atlantic lumpfish against bacterial diseases, especially atypical A. salmonicida, but more work is required to identity optimal adjuvants.
Collapse
Affiliation(s)
- T Erkinharju
- Norwegian College of Fishery Science, University of Tromsø, Tromsø, Norway
| | - M R Lundberg
- Norwegian College of Fishery Science, University of Tromsø, Tromsø, Norway
| | - E Isdal
- Vaxxinova Norway AS, Bergen, Norway
| | - I Hordvik
- Department of Biology, University of Bergen, Bergen, Norway
| | - R A Dalmo
- Norwegian College of Fishery Science, University of Tromsø, Tromsø, Norway
| | - T Seternes
- Norwegian College of Fishery Science, University of Tromsø, Tromsø, Norway
| |
Collapse
|
24
|
Stroda KA, Murphy JD, Hansen RJ, Brownlee L, Atencio EA, Gustafson DL, Lana SE. Pharmacokinetics of cyclophosphamide and 4-hydroxycyclophosphamide in cats after oral, intravenous, and intraperitoneal administration of cyclophosphamide. Am J Vet Res 2017. [PMID: 28650232 DOI: 10.2460/ajvr.78.7.862] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To characterize pharmacokinetics of cyclophosphamide and 4-hydoxycyclophosphamide (4-OHCP) in the plasma of healthy cats after oral, IV, and IP administration of cyclophosphamide. ANIMALS 6 healthy adult cats. PROCEDURES Cats were randomly assigned to receive cyclophosphamide (200 mg/m2) via each of 3 routes of administration (oral, IV, and IP); there was a 30-day washout period between successive treatments. Plasma samples were obtained at various time points for up to 8 hours after administration. Samples were treated with semicarbazide hydrochloride to trap the 4-OHCP in stable form, which allowed for cyclophosphamide and trapped 4-OHCP to be simultaneously measured by use of tandem mass spectrometry. Pharmacokinetic parameters were determined from drug concentration-versus-time data for both cyclophosphamide and 4-OHCP. RESULTS Cyclophosphamide was tolerated well regardless of route of administration. Pharmacokinetic parameters for 4-OHCP were similar after oral, IV, and IP administration. Area under the concentration-time curve for cyclophosphamide was lower after oral administration than after IV or IP administration. CONCLUSIONS AND CLINICAL RELEVANCE Cyclophosphamide can be administered interchangeably to cats as oral, IV, and IP formulations, which should provide benefits with regard to cost and ease of administration to certain feline patients.
Collapse
|
25
|
Rønneseth A, Haugland GT, Colquhoun DJ, Brudal E, Wergeland HI. Protection and antibody reactivity following vaccination of lumpfish (Cyclopterus lumpus L.) against atypical Aeromonas salmonicida. Fish Shellfish Immunol 2017; 64:383-391. [PMID: 28344167 DOI: 10.1016/j.fsi.2017.03.040] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Revised: 03/01/2017] [Accepted: 03/22/2017] [Indexed: 06/06/2023]
Abstract
Atypical Aeromonas salmonicida is frequently associated with disease and mortality in farmed lumpfish (Cyclopterus lumpus L). Challenge experiments using different modes of exposure identified both high and low pathogenic isolates. Intraperitoneal vaccination induced production of high levels of specific antibodies particularly in fish given multiple injections. The immune sera contained antibodies cross reactive with both high and low pathogenic isolates. SDS-PAGE and LC/MSMS analyses showed that the highly virulent isolate expressed the virulence array protein (A-layer) while the less virulent isolate did not. Vaccines, containing the highly virulent isolate, formulated as a monovalent or as a trivalent vaccine, provided 73 and 60 relative percent survival (RPS) respectively, following intraperitoneal challenge. The detection of high levels of specific antibodies in immune sera and the protection provided by the test vaccines strongly indicate that it is possible to vaccinate lumpfish against atypical A. salmonicida and most probably also against other infectious bacterial diseases.
Collapse
Affiliation(s)
- Anita Rønneseth
- Department of Biology, University of Bergen, Bergen High-Technology Centre, PO Box 7803, NO-5020 Bergen, Norway.
| | - Gyri T Haugland
- Department of Biology, University of Bergen, Bergen High-Technology Centre, PO Box 7803, NO-5020 Bergen, Norway
| | - Duncan J Colquhoun
- Department of Biology, University of Bergen, Bergen High-Technology Centre, PO Box 7803, NO-5020 Bergen, Norway; Norwegian Veterinary Institute, Oslo, Norway
| | | | - Heidrun I Wergeland
- Department of Biology, University of Bergen, Bergen High-Technology Centre, PO Box 7803, NO-5020 Bergen, Norway
| |
Collapse
|
26
|
Zhang Z, Yu A, Lan J, Zhang H, Hu M, Cheng J, Zhao L, Lin L, Wei S. GapA, a potential vaccine candidate antigen against Streptococcus agalactiae in Nile tilapia (Oreochromis niloticus). Fish Shellfish Immunol 2017; 63:255-260. [PMID: 28219739 DOI: 10.1016/j.fsi.2017.02.019] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2016] [Revised: 02/13/2017] [Accepted: 02/14/2017] [Indexed: 05/26/2023]
Abstract
Streptococcosis due to the bacterium Streptococcus agalactiae (S. agalactiae) has resulted in enormous economic losses in aquaculture worldwide, especially in the tilapia culture industry. Previously, there were limited vaccines that could be employed against streptococcosis in tilapia. This study aimed to develop a vaccine candidate using the glyceraldehyde-phosphate dehydrogenase protein (GapA) of S. agalactiae encoded by the gapA gene. Tilapia were intraperitoneally injected with PBS, PBS + Freund's adjuvant, PBS + Montanide's adjuvant, GapA + Freund's adjuvant, GapA + Montanide's adjuvant, killed S. agalactiae whole cells (WC)+Freund's adjuvant, or killed S. agalactiae whole cells (WC)+ Montanide's adjuvant. They were then challenged with S. agalactiae, and the relative percentage survival (RPS) was monitored 14 days after the challenge. The highest RPSs were observed in the WC groups, with 76.7% in WC + Freund's adjuvant and 74.4% in WC + Montanide's adjuvant groups; these were followed by the GapA groups, with 63.3% in GapA + Freund's adjuvant and 45.6% in GapA + Montanide's adjuvant groups. The RPS of the PBS group was 0%, and those of PBS + Freund's adjuvant and PBS + Montanide's adjuvant groups were 6.7% and 3.3%, respectively. Additionally, the IgM antibody responses elicited in GapA groups and WC groups were significantly higher than those in PBS groups. Furthermore, the expressions of cytokine (IL-1β and TNF-α) mRNAs in the GapA groups and WC groups were significantly higher than those in the PBS groups. Taken together, these results reveal that the GapA protein is a promising vaccine candidate that could be used to prevent streptococcosis in tilapia.
Collapse
Affiliation(s)
- Ze Zhang
- Department of Aquatic Animal Medicine, Research Center for Marine Biology, College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei, 430070, China; School of Life Sciences, Beijing Normal University, Beijing, 100875, China; National Institute of Biological Sciences, Zhongguancun Life Science Park, Changping, 102206, Beijing, China
| | - Angen Yu
- Department of Aquatic Animal Medicine, Research Center for Marine Biology, College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Jiangfeng Lan
- Department of Aquatic Animal Medicine, Research Center for Marine Biology, College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Hua Zhang
- Department of Aquatic Animal Medicine, Research Center for Marine Biology, College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Minqiang Hu
- Department of Aquatic Animal Medicine, Research Center for Marine Biology, College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Jiewei Cheng
- Department of Aquatic Animal Medicine, Research Center for Marine Biology, College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Lijuan Zhao
- Department of Aquatic Animal Medicine, Research Center for Marine Biology, College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei, 430070, China; Guangzhou Key Laboratory of Aquatic Animal Diseases and Waterfowl Breeding, College of Animal Sciences and Technology, Zhongkai University of Agriculture and Engineering, Guangzhou, Guangdong, 510225, China
| | - Li Lin
- Department of Aquatic Animal Medicine, Research Center for Marine Biology, College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei, 430070, China; Guangzhou Key Laboratory of Aquatic Animal Diseases and Waterfowl Breeding, College of Animal Sciences and Technology, Zhongkai University of Agriculture and Engineering, Guangzhou, Guangdong, 510225, China.
| | - Shun Wei
- Department of Aquatic Animal Medicine, Research Center for Marine Biology, College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei, 430070, China.
| |
Collapse
|
27
|
Marana MH, Skov J, Chettri JK, Krossøy B, Dalsgaard I, Kania PW, Buchmann K. Positive correlation between Aeromonas salmonicida vaccine antigen concentration and protection in vaccinated rainbow trout Oncorhynchus mykiss evaluated by a tail fin infection model. J Fish Dis 2017; 40:507-516. [PMID: 27593619 DOI: 10.1111/jfd.12527] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2016] [Revised: 06/07/2016] [Accepted: 06/08/2016] [Indexed: 05/04/2023]
Abstract
Rainbow trout, Oncorhynchus mykiss (Walbaum), are able to raise a protective immune response against Aeromonas salmonicida subsp. salmonicida (AS) following injection vaccination with commercial vaccines containing formalin-killed bacteria, but the protection is often suboptimal under Danish mariculture conditions. We elucidated whether protection can be improved by increasing the concentration of antigen (formalin-killed bacteria) in the vaccine. Rainbow trout juveniles were vaccinated by intraperitoneal (i.p.) injection with a bacterin of Aeromonas salmonicida subsp. salmonicida strain 090710-1/23 in combination with Vibrio anguillarum serotypes O1 and O2a supplemented with an oil adjuvant. Three concentrations of AS antigens were applied. Fish were subsequently challenged with the homologous bacterial strain administered by perforation of the tail fin epidermis and 60-s contact with live A. salmonicida bacteria. The infection method proved to be efficient and could differentiate efficacies of different vaccines. It was shown that protection and antibody production in exposed fish were positively correlated to the AS antigen concentration in the vaccine.
Collapse
Affiliation(s)
- M H Marana
- Department of Veterinary Disease Biology, Faculty of Health and Medical Sciences, University of Copenhagen, Frederiksberg C, Denmark
| | - J Skov
- Department of Veterinary Disease Biology, Faculty of Health and Medical Sciences, University of Copenhagen, Frederiksberg C, Denmark
| | - J K Chettri
- Department of Veterinary Disease Biology, Faculty of Health and Medical Sciences, University of Copenhagen, Frederiksberg C, Denmark
| | | | - I Dalsgaard
- National Veterinary Institute, Technical University of Denmark, Frederiksberg C, Denmark
| | - P W Kania
- Department of Veterinary Disease Biology, Faculty of Health and Medical Sciences, University of Copenhagen, Frederiksberg C, Denmark
| | - K Buchmann
- Department of Veterinary Disease Biology, Faculty of Health and Medical Sciences, University of Copenhagen, Frederiksberg C, Denmark
| |
Collapse
|
28
|
Hwang JY, Kwon MG, Jung SH, Park MA, Kim DW, Cho WS, Park JW, Son MH. RNA-Seq transcriptome analysis of the olive flounder (Paralichthys olivaceus) kidney response to vaccination with heat-inactivated viral hemorrhagic septicemia virus. Fish Shellfish Immunol 2017; 62:221-226. [PMID: 28108340 DOI: 10.1016/j.fsi.2017.01.016] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2016] [Revised: 01/06/2017] [Accepted: 01/13/2017] [Indexed: 06/06/2023]
Abstract
Viral hemorrhagic septicemia (VHS) is a highly contagious disease of cultured flounder caused by VHS virus (VHSV). To develop effective VHSV vaccines, it is essential to understand the molecular mechanisms underlying the host's protective response against VHSV. The purpose of this study is to clarify which genes are involved in the protective response of olive flounder after VHSV vaccination. We first injected olive flounder intraperitoneally with 107 TCID50 heat-inactivated VHSV vaccine and evaluated the vaccine efficacy at 20 °C. Fish vaccinated with heat-inactivated VHSV were significantly protected compared to non-vaccinated fish, with a relative percentage survival of 83%. To analyze the vaccination-induced changes in the expression profiles of genes, kidneys were collected from control and vaccinated fish at days 1, 3, and 7 after vaccination and global gene expression profiling was carried out by RNA sequencing. The analysis revealed that 15,001 genes were differentially expressed by at least 2-fold between vaccinated fish and non-vaccinated controls. Of these, 58 genes clustered into the acute phase response, Toll-like receptor, interferon-inducible/regulatory proteins, and apoptosis pathways. These data provided insights into the molecular mechanisms underlying the protective immune response of olive flounder against heat-inactivated VHSV vaccine and might aid future studies to develop a highly immunogenic vaccine against VHSV in flounder.
Collapse
Affiliation(s)
- Jee Youn Hwang
- Aquatic Disease Control Division, National Institute of Fisheries Science, 216 GijangHaean-Ro, Gijang-up, Gijang-Gun, Busan 46083, Republic of Korea.
| | - Mun Gyeoung Kwon
- Aquatic Disease Control Division, National Institute of Fisheries Science, 216 GijangHaean-Ro, Gijang-up, Gijang-Gun, Busan 46083, Republic of Korea.
| | - Sung-Hee Jung
- Pathology Division, National Institute of Fisheries Science, 216 GijangHaean-Ro, Gijang-up, Gijang-Gun, Busan 46083, Republic of Korea.
| | - Myoung Ae Park
- Southeast Sea Fisheries Research Institute, National Institute of Fisheries Science (NIFS), Tongyeong 650-943, Republic of Korea.
| | - Dong-Wook Kim
- AllBT Co., Ltd., O1-315 Ho, Internet Business Incubation Center, Mokweon University, 88 Doanbuk-ro, Seo-gu, Daejeon 302-729, Republic of Korea.
| | - Wang Sik Cho
- AllBT Co., Ltd., O1-315 Ho, Internet Business Incubation Center, Mokweon University, 88 Doanbuk-ro, Seo-gu, Daejeon 302-729, Republic of Korea.
| | - Jeong Woo Park
- Department of Biological Sciences, University of Ulsan, Ulsan 680-749, Republic of Korea.
| | - Maeng-Hyun Son
- Aquatic Disease Control Division, National Institute of Fisheries Science, 216 GijangHaean-Ro, Gijang-up, Gijang-Gun, Busan 46083, Republic of Korea.
| |
Collapse
|
29
|
Abstract
Intraperitoneal (IP) injections are an effective and reproducible route of drug administration. However, current IP equipment can be either costly, inaccurate, or unsafe for zebrafish. We describe a simple, low-cost IP setup, which can be easily assembled from inexpensive and readily available parts, and which provides a safe, reproducible, and accurate IP-injection method for experimenters.
Collapse
Affiliation(s)
- Seyed-Mohammadreza Samaee
- Aquatic Lab, Department of Food Hygiene and Quality Control, Faculty of Veterinary Medicine, Urmia University, Urmia, Iran
| | - Sahar Seyedin
- Aquatic Lab, Department of Food Hygiene and Quality Control, Faculty of Veterinary Medicine, Urmia University, Urmia, Iran
| | - Zoltan M. Varga
- Zebrafish International Resource Center, Institute of Neuroscience, University of Oregon, Eugene, Oregon
| |
Collapse
|
30
|
Reyes-Becerril M, Guluarte C, Ceballos-Francisco D, Angulo C, Esteban MÁ. Enhancing gilthead seabream immune status and protection against bacterial challenge by means of antigens derived from Vibrio parahaemolyticus. Fish Shellfish Immunol 2017; 60:205-218. [PMID: 27890799 DOI: 10.1016/j.fsi.2016.11.053] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2016] [Revised: 11/23/2016] [Accepted: 11/24/2016] [Indexed: 06/06/2023]
Abstract
In an attempt to control the proliferation of the pathogenic bacterium Vibrio parahaemolyticus in gilthead seabream (Sparus aurata), the immunostimulant effect of lysate and ToxA from this bacterium was evaluated. Fish were intraperitoneally injected twice (first injection, day 1 of the experiment; second injection, day 7) and sampled after one week (on days 8 and 15). Afterwards, all fish specimens were experimentally infected with V. parahaemolyticus and mortality was recovered for 1 week. Fish injected with lysate, ToxA and phosphate buffer saline (control) showed 100%, 50% and 0% survival, respectively, when challenged with the pathogen. Skin mucus immune parameters and immune-related gene expression in skin and spleen were also evaluated. The results showed that mucus immune parameters were enhanced in the lysate and ToxA groups compared with the values obtained for fish from the control group. Expression of IL-1β, TNF-α, C3 and IgM genes was significantly up-regulated in the lysate and ToxA groups, principally after infection with the bacterium. Interestingly, TLR5 gene expression increased in fish immunized with lysate. The most prominent histological characteristic in gut from infected fish was the presence of a great number of intraepithelial leucocytes as well as inflammation of the submucosa, while severe hydropic degeneration and hemosiderosis were detected in liver from infected fish. Injection of lysate or ToxA had a protective effect against the deleterious consequences of subsequent infection with V. parahaemolyticus in gut and liver. The findings underline the potential of lysate and ToxA as potent preventive antigens against this kind of vibriosis.
Collapse
Affiliation(s)
- Martha Reyes-Becerril
- Immunology & Vaccinology Group, Centro de Investigaciones Biológicas del Noroeste (CIBNOR), Instituto Politécnico Nacional 195, Playa Palo de Santa Rita Sur, La Paz, B.C.S. 23090, Mexico
| | - Crystal Guluarte
- Immunology & Vaccinology Group, Centro de Investigaciones Biológicas del Noroeste (CIBNOR), Instituto Politécnico Nacional 195, Playa Palo de Santa Rita Sur, La Paz, B.C.S. 23090, Mexico
| | - Diana Ceballos-Francisco
- Fish Innate Immune System Group, Department of Cell Biology & Histology, Faculty of Biology, Regional Campus of International Excellence "Campus Mare Nostrum", University of Murcia, Spain
| | - Carlos Angulo
- Immunology & Vaccinology Group, Centro de Investigaciones Biológicas del Noroeste (CIBNOR), Instituto Politécnico Nacional 195, Playa Palo de Santa Rita Sur, La Paz, B.C.S. 23090, Mexico.
| | - M Ángeles Esteban
- Fish Innate Immune System Group, Department of Cell Biology & Histology, Faculty of Biology, Regional Campus of International Excellence "Campus Mare Nostrum", University of Murcia, Spain.
| |
Collapse
|
31
|
Chettri JK, Mehrdana F, Hansen EB, Ebbensgaard A, Overgaard MT, Lauritsen AH, Dalsgaard I, Buchmann K. Antimicrobial peptide CAP18 and its effect on Yersinia ruckeri infections in rainbow trout Oncorhynchus mykiss (Walbaum): comparing administration by injection and oral routes. J Fish Dis 2017; 40:97-104. [PMID: 27334068 DOI: 10.1111/jfd.12497] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2015] [Revised: 03/30/2016] [Accepted: 03/30/2016] [Indexed: 06/06/2023]
Abstract
The antimicrobial peptide CAP18 has been demonstrated to have a strong in vitro bactericidal effect on Yersinia ruckeri, but its activity in vivo has not been described. In this work, we investigated whether CAP18 protects rainbow trout Oncorhynchus mykiss (Walbaum) against enteric red mouth disease caused by this pathogen either following i.p. injection or by oral administration (in feed). It was found that injection of CAP18 into juvenile rainbow trout before exposure to Y. ruckeri was associated with lowered mortality compared to non-medicated fish although it was less effective than the conventional antibiotic oxolinic acid. Oral administration of CAP18 to trout did not prevent infection. The proteolytic effect of secretions on the peptide CAP18 in the fish gastrointestinal tract is suggested to account for the inferior effect of oral administration.
Collapse
Affiliation(s)
- J K Chettri
- Faculty of Health and Medical Sciences, Department of Veterinary Disease Biology, University of Copenhagen, Frederiksberg C, Denmark
| | - F Mehrdana
- Faculty of Health and Medical Sciences, Department of Veterinary Disease Biology, University of Copenhagen, Frederiksberg C, Denmark
| | - E B Hansen
- National Food Institute, Technical University of Denmark, Søborg, Denmark
| | - A Ebbensgaard
- National Food Institute, Technical University of Denmark, Lyngby, Denmark
| | - M T Overgaard
- Department of Chemistry and Bioscience, Aalborg University, Aalborg, Denmark
| | | | - I Dalsgaard
- National Veterinary Institute, Technical University of Denmark, Copenhagen, Denmark
| | - K Buchmann
- Faculty of Health and Medical Sciences, Department of Veterinary Disease Biology, University of Copenhagen, Frederiksberg C, Denmark
| |
Collapse
|
32
|
Qi XZ, Li DL, Tu X, Song CG, Ling F, Wang GX. Preliminary study on the relationship between dexamethasone and pathogen susceptibility on crucian carp (Carassius auratus). Fish Shellfish Immunol 2016; 59:18-24. [PMID: 27744057 DOI: 10.1016/j.fsi.2016.10.017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2016] [Revised: 09/12/2016] [Accepted: 10/10/2016] [Indexed: 06/06/2023]
Abstract
Dexamethasone, a known immunosuppressant, can inhibit the immune response and increase the amount of pathogen in body, but the role of dexamethasone affecting susceptibility of crucian carp (Carassius auratus) to pathogen is unclear. The effects of dexamethasone on susceptibility of crucian carp to Aeromonas hydrophila were investigated in this study. The fish were divided into four groups randomly and injected intraperitoneally by dexamethasone for 0 day (group D), 3 days (group C), 6 days (group B), and 9 days (group A), respectively. The serum lysozyme activity was significantly declined in group A, B and C. Relative immune gene expression such as il-1β, cxcl-8, tnfα and crp in kidney were down-regulation compared to group D. After that crucian carp were infected with A. hydrophila, crucian carp treated by dexamethasone had higher mortality (group A 95%, group B 76%, group C 31%) when compared to group D (4% mortality); the amount of pathogen in was significantly increased (P < 0.05) in liver, kidney and spleen of fish in group A-C compared to group D. These results implicated that higher susceptibility caused by dexamethasone may be induced by the decrease of lysozyme activity and the down-regulation of some immune genes.
Collapse
Affiliation(s)
- Xiao-Zhou Qi
- Northwest A&F University, Xinong Road 22nd, Yangling, Shaanxi 712100, China
| | - Dong-Liang Li
- Northwest A&F University, Xinong Road 22nd, Yangling, Shaanxi 712100, China
| | - Xiao Tu
- Northwest A&F University, Xinong Road 22nd, Yangling, Shaanxi 712100, China
| | - Chen-Guang Song
- Northwest A&F University, Xinong Road 22nd, Yangling, Shaanxi 712100, China
| | - Fei Ling
- Northwest A&F University, Xinong Road 22nd, Yangling, Shaanxi 712100, China.
| | - Gao-Xue Wang
- Northwest A&F University, Xinong Road 22nd, Yangling, Shaanxi 712100, China.
| |
Collapse
|
33
|
Kaneshige N, Jirapongpairoj W, Hirono I, Kondo H. Temperature-dependent regulation of gene expression in Japanese flounder Paralichthys olivaceus kidney after Edwardsiella tarda formalin-killed cells. Fish Shellfish Immunol 2016; 59:298-304. [PMID: 27815208 DOI: 10.1016/j.fsi.2016.10.048] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Revised: 10/28/2016] [Accepted: 10/30/2016] [Indexed: 06/06/2023]
Abstract
Temperature affects the activities of the immune system and the susceptibility of fish to pathogens. To investigate the modulation of temperature on immune related gene expression in formalin-killed cells (FKC) of Edwardsiella tarda-injected Japanese flounder Paralichthys olivaceus, fish reared at 15 or 22 °C were injected with FKC of E. tarda. The up-regulation of immune related genes was detected in FKC-injected fish at both temperatures by qPCR. The mRNA expression of IFNγ was highly up-regulated at 6 h post injection (hpi) in FKC-injected fish at 15 °C, whereas at 22 °C, strong up-regulation of the gene was detected at 3 hpi The mRNA expression level of IRF1 was detected from 3 hpi to day 14 post injection in fish reared at 15 °C, but the gene was up-regulated from 3 to 6 hpi in fish reared at 22 °C. Comprehensive gene expression profiling showed that immune related genes are differentially expressed between 15 and 22 °C. Genes involved in the IFNγ signaling pathway were up-regulated at 22 °C but not at 15 °C. These results demonstrate that gene(s) involved in IFNγ signaling pathway in Japanese flounder stimulated with FKC of E. tarda are regulated by temperature.
Collapse
Affiliation(s)
- Norie Kaneshige
- Laboratory of Genome Science, Graduate School of Tokyo University of Marine Science and Technology, Konan 4-5-7, Minato-ku, Tokyo 108-8477, Japan
| | - Walissara Jirapongpairoj
- Laboratory of Genome Science, Graduate School of Tokyo University of Marine Science and Technology, Konan 4-5-7, Minato-ku, Tokyo 108-8477, Japan
| | - Ikuo Hirono
- Laboratory of Genome Science, Graduate School of Tokyo University of Marine Science and Technology, Konan 4-5-7, Minato-ku, Tokyo 108-8477, Japan
| | - Hidehiro Kondo
- Laboratory of Genome Science, Graduate School of Tokyo University of Marine Science and Technology, Konan 4-5-7, Minato-ku, Tokyo 108-8477, Japan.
| |
Collapse
|
34
|
Buonocore F, Bernini C, Coscia MR, Giacomelli S, de Pascale D, Randelli E, Stocchi V, Scapigliati G. Immune response of the Antarctic teleost Trematomus bernacchii to immunization with Psychrobacter sp. (TAD1). Fish Shellfish Immunol 2016; 56:192-198. [PMID: 27417227 DOI: 10.1016/j.fsi.2016.07.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Revised: 06/28/2016] [Accepted: 07/09/2016] [Indexed: 06/06/2023]
Abstract
Adult Trematomus bernacchii have been immunized intraperitoneally with heat-killed cells of the Antarctic marine bacterium Psychrobacter sp. (TAD1) up to 60 days. After immunizations and sampling at various times, fish sera were tested for specific IgM by ELISA, and different tissues (head kidney and spleen) were investigated for transcription of master genes of the acquired immune response (IgM, IgT, TRβ, TRγ). Results from ELISA assays showed a time-dependent induction of specific serum anti-TAD1 IgM, and western blot analysis of TAD1 lysates probed with fish sera revealed enhanced immunoreactivity in immunized animals compared to controls. Quantitative PCR analysis of transcripts coding for IgM, IgT, TRβ, TRγ was performed in T. bernacchii tissues to assess basal expression, and then on cDNAs of cells from head kidney and spleen of fish injected for 8, 24, and 72 h with inactivated TAD1. The results showed a differential basal expression of transcripts in the examined tissues, and a time-dependent strong up-regulation of IgT, TRβ, TRγ genes upon in vivo stimulation with TAD1. These results represent a first in vivo study on the mounting of a specific immune response in an Antarctic teleost species.
Collapse
Affiliation(s)
- Francesco Buonocore
- Università della Tuscia, Dipartimento per l'Innovazione Biologica, Agroalimentare e Forestale, Viterbo, Italy
| | - Chiara Bernini
- Università della Tuscia, Dipartimento per l'Innovazione Biologica, Agroalimentare e Forestale, Viterbo, Italy
| | - Maria Rosaria Coscia
- Istituto di Biochimica delle Proteine, Consiglio Nazionale delle Ricerche, Napoli, Italy
| | - Stefano Giacomelli
- Istituto di Biochimica delle Proteine, Consiglio Nazionale delle Ricerche, Napoli, Italy
| | - Donatella de Pascale
- Istituto di Biochimica delle Proteine, Consiglio Nazionale delle Ricerche, Napoli, Italy
| | - Elisa Randelli
- Università della Tuscia, Dipartimento per l'Innovazione Biologica, Agroalimentare e Forestale, Viterbo, Italy
| | - Valentina Stocchi
- Università della Tuscia, Dipartimento per l'Innovazione Biologica, Agroalimentare e Forestale, Viterbo, Italy
| | - Giuseppe Scapigliati
- Università della Tuscia, Dipartimento per l'Innovazione Biologica, Agroalimentare e Forestale, Viterbo, Italy.
| |
Collapse
|
35
|
M Monte M, Urquhart K, Secombes CJ, Collet B. Individual monitoring of immune responses in rainbow trout after cohabitation and intraperitoneal injection challenge with Yersinia ruckeri. Fish Shellfish Immunol 2016; 55:469-478. [PMID: 27245868 DOI: 10.1016/j.fsi.2016.05.041] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2016] [Revised: 05/06/2016] [Accepted: 05/27/2016] [Indexed: 06/05/2023]
Abstract
Yersinia ruckeri, the causative agent of enteric red mouth disease (ERM), is a widely studied pathogen in disease models using rainbow trout. This infection model, mostly based on intraperitoneally injection or bath immersion challenges, has an impact on both components (innate and adaptive) of the fish immune system. Although there has been much attention in studying its host-pathogen interactions, there is still a lack of knowledge regarding the impact of a cohabitation challenge. To tackle this we used a newly established non-lethal sampling method (by withdrawing a small amount of blood) in rainbow trout which allowed the individual immune monitoring before (non-infected) and after infection with Yersinia ruckeri either by intraperitoneal (i.p.) injection or by cohabitation (cohab). A range of key immune genes were monitored during the infection by real-time PCR, and results were compared between the two infection routes. Results indicated that inflammatory (IL-1β1 and IL-8) cytokines and certain antimicrobial peptides (cathelicidins) revealed a different pattern of expression between the two infected groups (i.p. vs cohab), in comparison to adaptive immune cytokines (IL-22, IFN-γ and IL-4/13A) and β-defensins. This suggests a different involvement of distinct immune markers according to the infection model, and the importance of using a cohabitation challenge as a more natural disease model that likely simulates what would occur in the environment.
Collapse
Affiliation(s)
- Milena M Monte
- Scottish Fish Immunology Research Centre, School of Biological Sciences, University of Aberdeen, Aberdeen AB24 2TZ, UK.
| | - Katy Urquhart
- Marine Scotland Science, Marine Laboratory, 375 Victoria Road, Aberdeen AB11 9DB, UK
| | - Christopher J Secombes
- Scottish Fish Immunology Research Centre, School of Biological Sciences, University of Aberdeen, Aberdeen AB24 2TZ, UK
| | - Bertrand Collet
- Marine Scotland Science, Marine Laboratory, 375 Victoria Road, Aberdeen AB11 9DB, UK.
| |
Collapse
|
36
|
Ling F, Wu ZQ, Jiang C, Liu L, Wang GX. Antibacterial efficacy and pharmacokinetic evaluation of sanguinarine in common carp (Cyprinus carpio) following a single intraperitoneal administration. J Fish Dis 2016; 39:993-1000. [PMID: 26763075 DOI: 10.1111/jfd.12433] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2015] [Revised: 10/12/2015] [Accepted: 10/13/2015] [Indexed: 06/05/2023]
Abstract
Sanguinarine (SA), with antimicrobial and antiparasitic activities against fish pathogens, exhibits great potential commercial use in aquaculture. However, little information on pharmacokinetics of SA restricts further application in aquaculture. In this study, pharmacokinetics of SA in common carp (Cyprinus carpio) following a single intraperitoneal administration [10 mg kg(-1) BW (body weight)] was evaluated by high-performance liquid chromatography (HPLC). The peak concentration (Cmax ) of SA in kidney was 11.8 μg g(-1) , which was higher than in other tissues and plasma. The terminal half-life in fish tissue and plasma was as follows: 42.3 h (kidney) > 37.2 h (liver) > 20.1 h (gill) > 18.8 h (muscle) > 10.9 h (spleen) > 10.0 h (plasma). Additionally, we determined the bacterial loads in tissues of common carp infected with Aeromonas hydrophila after i.p. administration of SA at 0, 5, 10 and 20 mg kg(-1) BW. The results showed that i.p. administration of SA at 10 mg kg(-1) BW significantly enhanced antibacterial efficacy against A. hydrophila, where the antibacterial ratio in the gill, kidney, spleen and liver on day 5 was 95.13%, 93.33%, 90.09% and 92.82%, respectively. Overall, these results suggested the potential of SA to treat A. hydrophila infection in common carp farming industry.
Collapse
Affiliation(s)
- F Ling
- College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Z-Q Wu
- The Station of Fishery Management, Yiwu City Water Conservancy Bureau of Zhejiang Province, Yiwu, China
| | - C Jiang
- College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - L Liu
- College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - G-X Wang
- College of Animal Science and Technology, Northwest A&F University, Yangling, China
| |
Collapse
|
37
|
Han J, Xu G, Xu T. The miiuy croaker microRNA transcriptome and microRNA regulation of RIG-I like receptor signaling pathway after poly(I:C) stimulation. Fish Shellfish Immunol 2016; 54:419-426. [PMID: 27131903 DOI: 10.1016/j.fsi.2016.04.126] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Revised: 04/18/2016] [Accepted: 04/26/2016] [Indexed: 06/05/2023]
Abstract
MicroRNAs (miRNAs) as endogenous small non-coding RNAs play key regulatory roles in diverse biological processes via degrading the target mRNAs or inhibiting protein translation. Previously many researchers have reported the identification, characteristic of miRNAs and the interaction with its target gene. But, the study on the regulation of miRNAs to biological processes via regulatory the key signaling pathway was still limited. In order to comprehend the regulatory mechanism of miRNAs, two small RNA libraries from the spleen of miiuy croaker individuals with or without poly(I:C) infection were constructed. The 197 conserved miRNAs and 75 novel miRNAs were identified, and 14 conserved and 8 novel miRNAs appeared significant variations. Those differently expressed miRNAs relate to immune regulation of miiuy croaker. Furthermore, expressions of four differently expressed miRNAs were validated by qRT-PCR, and the result was consistent with sequencing data. The target genes of the differently expressed miRNAs in the two libraries were predicted, and some candidate target genes were involved in the RIG-I-like receptor (RLR) signaling pathway. The negative regulation of miRNAs to target genes were confirmed by comparing the expression pattern of miRNAs and their target genes. The results of regulating target genes were that firstly directly or indirectly activating the downstream signaling cascades and subsequent inducting the type I interferon, inflammatory cytokines and apoptosis. These studies could help us to deeper understand the roles of miRNAs played in the fish immune system, and provide a new way to investigate the defense mechanism of fish.
Collapse
Affiliation(s)
- Jingjing Han
- Laboratory of Fish Biogenetics & Immune Evolution, College of Marine Science, Zhejiang Ocean University, Zhoushan, 316022, China
| | - Guoliang Xu
- Laboratory of Fish Biogenetics & Immune Evolution, College of Marine Science, Zhejiang Ocean University, Zhoushan, 316022, China
| | - Tianjun Xu
- Laboratory of Fish Biogenetics & Immune Evolution, College of Marine Science, Zhejiang Ocean University, Zhoushan, 316022, China.
| |
Collapse
|
38
|
Giri SS, Sen SS, Jun JW, Sukumaran V, Park SC. Role of Bacillus subtilis VSG4-derived biosurfactant in mediating immune responses in Labeo rohita. Fish Shellfish Immunol 2016; 54:220-229. [PMID: 27079425 DOI: 10.1016/j.fsi.2016.04.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2016] [Revised: 03/16/2016] [Accepted: 04/08/2016] [Indexed: 06/05/2023]
Abstract
This study aimed to isolate biosurfactant from CO2-sequestering Bacillus subtilis VSG4 and to evaluate its immunostimulatory effect in Labeo rohita fingerlings. Fish were injected intraperitoneally (i.p.) with 0.1 mL of phosphate-buffered saline (PBS) containing the water-soluble fraction of purified biosurfactant at 50 (S50), 100 (S100), 200 (S200), or 300 (S300) μg mL(-1). Fish injected with PBS served as controls. Various immunological parameters, including immune-related gene expression, were measured at 14, 21, and 28 days post administration (dpa). At 28 dpa, the fish were challenged with Aeromonas hydrophila and mortality was recorded up to 14 days. Among the immune parameters tested, lysozyme levels (36.32 ± 1.79 U mL(-1)), alternative complement pathway activity (76.26 ± 2.18 U mL(-1)), phagocytic activity (32.18 ± 0.67%), and serum bactericidal activity (73.2 ± 4.7%) were significantly higher (P < 0.05) in the S200 group at 21 dpa than in the controls. Respiratory burst activity (0.386 ± 0.008 OD630nm) was the highest in the S200 group at 28 dpa. Of the immune-related genes examined, pro-inflammatory cytokines (TNF-α and IL-1β) were significantly down-regulated in the S200 and S300 groups. Expression of anti-inflammatory cytokines (IL-10 and TGF-β) as well as IKB-α was higher (P < 0.05) in the S100‒S300 groups at 21 dpa. The expression of NF-κB p65, IKK-β, MAPKp38, and Myd88 was down-regulated in the treated groups when compared to the controls. Fish in the S200 group exhibited the highest post-challenge relative survival rate (67.88%). Collectively, these results suggest that secondary metabolite (biosurfactant) isolated from B. subtilis VSG4 at 200 μg mL(-1) can positively influence immune responses, enhance disease resistance, and stimulate immune-related gene expression in L. rohita.
Collapse
Affiliation(s)
- Sib Sankar Giri
- Laboratory of Aquatic Biomedicine, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, 151742, South Korea.
| | - Shib Sankar Sen
- School of Life Sciences, Jawharlal Nehru University, New Delhi, 110067, India.
| | - Jin Woo Jun
- Laboratory of Aquatic Biomedicine, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, 151742, South Korea.
| | - Venkatachalam Sukumaran
- Department of Biotechnology, Periyar Maniammai University, Thanjavur, 613403, Tamil Nadu, India.
| | - Se Chang Park
- Laboratory of Aquatic Biomedicine, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, 151742, South Korea.
| |
Collapse
|
39
|
Alves HC, Valentim AM, Olsson IAS, Antunes LM. Intraperitoneal propofol and propofol fentanyl, sufentanil and remifentanil combinations for mouse anaesthesia. Lab Anim 2016; 41:329-36. [PMID: 17640460 DOI: 10.1258/002367707781282767] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The combination of propofol and a rapid-acting opioid, such as fentanyl, sufentanil or remifentanil, is a relatively safe, total intravenous anaesthesia technique, commonly used in humans and which has been investigated in laboratory animals. The objective of this study was to evaluate these combinations for anaesthesia of mice by the intraperitoneal (i.p.) route. Sixty-seven mice, divided into groups of four, were used to test 28 combinations of propofol alone and propofol with fentanyl, sufentanil or remifentanil administered i.p. The dose ranges of drugs studied were propofol 50–200 mg/kg, fentanyl 0.2–0.4 mg/kg, sufentanil 0.05–0.1 mg/kg and remifentanil 0.2–1.0 mg/kg. The loss of righting reflex (RR) and the loss of pedal withdrawal reflex (PWR) were recorded along with the duration and quality of recovery. The results obtained in these studies were unpredictable. The same dose combinations of propofol and opioids were associated with different responses in different individuals. Higher doses did not induce loss of RR and PWR in all animals and were associated with high mortality rates. An adequate hypnotic level was only observed with higher doses of propofol. The synergistic effect of propofol and the opioids was not sufficient to allow surgical procedures. Animals that reached PWR loss showed tail rigidity, shaking limbs and scratched their heads with their forefeet. Higher opioid doses induced respiratory depression and higher death rates. The inconsistency between and within groups may be associated with the i.p. route. The results reported here show that the i.p. route is not appropriate for mouse anaesthesia using propofol alone or in combination with fentanyl, sufentanil or remifentanil.
Collapse
Affiliation(s)
- H C Alves
- CECAV-UTAD, Centro de Estudos de Ciências Animais e Veterinárias, Universidade de Trás-os-Montes e Alto Douro, Vila Real, Portugal.
| | | | | | | |
Collapse
|
40
|
Kuo HP, Chung CL, Hung YF, Lai YS, Chiou PP, Lu MW, Kong ZL. Comparison of the responses of different recombinant fish type I interferons against betanodavirus infection in grouper. Fish Shellfish Immunol 2016; 49:143-153. [PMID: 26691305 DOI: 10.1016/j.fsi.2015.12.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Revised: 11/30/2015] [Accepted: 12/01/2015] [Indexed: 06/05/2023]
Abstract
The nervous necrosis virus (NNV) is an aquatic virus that can infect more than 30 species including the grouper, which is a valuable fish species in Taiwan. NNV causes up to 90-100% mortality in the aquaculture industry. Interferons (IFNs) are a family of cytokines that stimulate the expression of numerous proteins to protect the host against viruses and possess very unique specific characteristics in fish. The cross-reactivity of heterologous IFNs on grouper cells and larvae has not been well-studied to date. To evaluate and compare the anti-NNV effect of different fish IFNs in grouper, we successfully synthesized, subcloned, expressed and purified several fish type I IFNs in the present study: grouper (gIFN), salmon (sIFN), seabass (sbIFN) and tilapia (tpIFN). The gIFN and sIFN proteins up-regulated myxovirus resistance protein (Mx) gene expression in grouper kidney (GK) cells, but similar effects were not observed for sbIFN and tpIFN. Following co- and pre-treatment with the 4 types of IFNs with NNV infection in GK cells, sIFN exhibited the strongest antiviral ability to suppress NNV gene replication (especially at 24 h) and significantly reduced the cytopathic effect (CPE) at 72 h, followed by gIFN. Unsurprisingly, sbIFN and tpIFN had no significant effect on CPE but slightly suppressed NNV gene replication. The cytotoxicity of these four fish IFNs on GK cells was also examined for the first time. In the in vivo test, we confirmed that gIFN and sIFN had a significant protective effect against NNV when administered by intraperitoneal (IP) injection and the oral route in Malabar grouper (Epinephelus malabaricus) larvae. This study compared the protective effects of IFNs from various fish species against NNV and demonstrated crosstalk between sIFN and grouper cells for the first time. These results provide information concerning the efficacy of fish IFNs for possible therapeutic applications.
Collapse
Affiliation(s)
- Hsiang-Ping Kuo
- Department of Food Science, National Taiwan Ocean University, Keelung 202, Taiwan, ROC; COO of Sea Party International Co., Ltd., Taipei 104, Taiwan, ROC
| | - Chia-Ling Chung
- Department of Aquaculture, National Taiwan Ocean University, Keelung 202, Taiwan, ROC
| | - Yu-Fang Hung
- Department of Aquaculture, National Taiwan Ocean University, Keelung 202, Taiwan, ROC
| | - Yu-Shen Lai
- Institute of Biotechnology, National Ilan University, Ilan 260, Taiwan, ROC
| | - Pinwen P Chiou
- Department of Aquaculture, National Taiwan Ocean University, Keelung 202, Taiwan, ROC
| | - Ming-Wei Lu
- Department of Aquaculture, National Taiwan Ocean University, Keelung 202, Taiwan, ROC; Center of Excellence for the Oceans, National Taiwan Ocean University, Keelung 202, Taiwan, ROC.
| | - Zwe-Ling Kong
- Department of Food Science, National Taiwan Ocean University, Keelung 202, Taiwan, ROC.
| |
Collapse
|
41
|
Erickson RL, Terzi MC, Jaber SM, Hankenson FC, McKinstry-Wu A, Kelz MB, Marx JO. Intraperitoneal Continuous-Rate Infusion for the Maintenance of Anesthesia in Laboratory Mice (Mus musculus). J Am Assoc Lab Anim Sci 2016; 55:548-557. [PMID: 27657709 PMCID: PMC5029825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Received: 11/14/2015] [Revised: 12/11/2015] [Accepted: 02/11/2016] [Indexed: 06/06/2023]
Abstract
Intraperitoneal injectable anesthetics are often used to achieve surgical anesthesia in laboratory mice. Because bolus redosing of injectable anesthetics can cause unacceptably high mortality, we evaluated intraperitoneal continuous-rate infusion (CRI) of ketamine with or without xylazine for maintaining surgical anesthesia for an extended period of time. Anesthesia was induced in male C57BL/6J mice by using ketamine (80 mg/kg) and xylazine (8 mg/kg) without or with acepromazine at 0.1 mg/kg or 0.5 mg/kg. At 10 min after induction, CRI for 90 min was initiated and comprised 25%, 50%, or 100% of the initial ketamine dose per hour or 50% of the initial doses of both ketamine and xylazine. Anesthetic regimens were compared on the basis of animal immobility, continuous surgical depth of anesthesia as determined by the absence of a pedal withdrawal reflex, and mortality. Consistent with previous studies, the response to anesthetics was highly variable. Regimens that provided the longest continuous surgical plane of anesthesia with minimal mortality were ketamine-xylazine-acepromazine (0.1 mg/kg) with CRI of 100% of the initial ketamine dose and ketamine-xylazine-acepromazine (0.5 mg/kg) with CRI of 50% of the initial ketamine and xylazine doses. In addition, heart rate and respiratory rate did not increase consistently in response to a noxious stimulus during CRI anesthesia, even when mice exhibited a positive pedal withdrawal reflex, suggesting that these parameters are unreliable indicators of anesthetic depth during ketamine-xylazine anesthesia in mice. We conclude that intraperitoneal CRI anesthesia in mice prolongs injectable anesthesia more consistently and with lower mortality than does bolus redosing.
Collapse
Affiliation(s)
- Rebecca L Erickson
- University Laboratory Animal Resources, University of Pennsylvania, Philadelphia, Pennsylvania, USA; Department of Pathobiology, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Matthew C Terzi
- School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Samer M Jaber
- Department of Animal Medicine, University of Massachusetts Medical School, Worcester, Massachusetts, USA
| | - F Claire Hankenson
- Campus Animal Resources and College of Veterinary Medicine, Michigan State University, East Lansing, Michigan, USA
| | - Andrew McKinstry-Wu
- Department of Anesthesiology and Critical Care, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Max B Kelz
- Department of Anesthesiology and Critical Care, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - James O Marx
- University Laboratory Animal Resources, University of Pennsylvania, Philadelphia, Pennsylvania, USA; Department of Pathobiology, University of Pennsylvania, Philadelphia, Pennsylvania, USA.
| |
Collapse
|
42
|
Ghosh B, Cain KD, Nowak BF, Bridle AR. Microencapsulation of a putative probiotic Enterobacter species, C6-6, to protect rainbow trout, Oncorhynchus mykiss (Walbaum), against bacterial coldwater disease. J Fish Dis 2016; 39:1-11. [PMID: 25272249 DOI: 10.1111/jfd.12311] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2014] [Revised: 08/15/2014] [Accepted: 08/19/2014] [Indexed: 06/03/2023]
Abstract
Flavobacterium psychrophilum is the causative agent of bacterial coldwater disease (BCWD), which has a major impact on salmonid aquaculture globally. An Enterobacter species, C6-6, isolated from the gut of rainbow trout, Oncorhynchus mykiss (Walbaum), has been identified as a potential probiotic species providing protection against BCWD. This study examined the effects of alginate microencapsulation on the protective efficacy of C6-6 against BCWD in vivo when administered to rainbow trout fry orally or by intraperitoneal (IP) injection. Viable C6-6 bacteria were microencapsulated successfully, and this process (microencapsulation) did not significantly deteriorate its protective properties as compared to the administration of non-microencapsulated C6-6 bacteria. Both oral and IP delivery of C6-6 achieved significantly better protection than control treatments that did not contain C6-6 bacteria. The highest relative percent survival (RPS) resulted from IP delivery (71.4%) and was significantly greater than the highest oral RPS (38.6%). Successful intestinal colonization was not critical to protective effects of C6-6. The study showed that C6-6 administration, with or without encapsulation, was a viable choice for protecting fry from BCWD especially when administered intraperitoneally.
Collapse
Affiliation(s)
- B Ghosh
- National Centre for Marine Conservation and Resource Sustainability, University of Tasmania, Launceston, Tasmania, Australia
| | - K D Cain
- Department of Fish and Wildlife Resources and the Aquaculture Research Institute, University of Idaho, Moscow, Idaho, USA
| | - B F Nowak
- National Centre for Marine Conservation and Resource Sustainability, University of Tasmania, Launceston, Tasmania, Australia
| | - A R Bridle
- National Centre for Marine Conservation and Resource Sustainability, University of Tasmania, Launceston, Tasmania, Australia
| |
Collapse
|
43
|
Makesh M, Sudheesh PS, Cain KD. Systemic and mucosal immune response of rainbow trout to immunization with an attenuated Flavobacterium psychrophilum vaccine strain by different routes. Fish Shellfish Immunol 2015; 44:156-163. [PMID: 25687393 DOI: 10.1016/j.fsi.2015.02.003] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2014] [Revised: 02/02/2015] [Accepted: 02/03/2015] [Indexed: 06/04/2023]
Abstract
Teleosts possess three immunoglobulin (Ig) heavy chain isotypes viz., IgM, IgT and IgD and all three isotypes are reported in rainbow trout. The expression of these Ig isotypes in response to different immunization routes was investigated and results provide a better understanding of the role these Igs in different tissues. Rainbow trout (Oncorhynchus mykiss) were immunized with an attenuated Flavobacterium psychrophilum strain, 259-93-B.17 grown under iron limiting conditions, by intraperitoneal, anal intubation and immersion routes. Serum, gill mucus, skin mucus and intestinal mucus samples were collected at 0, 3, 7, 14, 28, 42 and 56 days post immunization by sacrificing four fish from each treatment group and the unimmunized control group, and the IgM levels were estimated by an enzyme linked immunosorbent assay (ELISA). In addition, blood, gill, skin and intestinal tissue samples were collected for Ig gene expression studies. The secretory IgM, IgD and IgT gene expression levels in these tissues were estimated by reverse transcription quantitative real time PCR (RT-qPCR). Levels of IgM in serum, gill and skin mucus increased significantly by 28 days after immunization in the intraperitoneally immunized group, while no significant increase in IgM level was observed in fish groups immunized by other routes. Secretory IgD and IgT expression levels were significantly upregulated in gills of fish immunized by the immersion route. Similarly, secretory IgT and IgD were upregulated in intestines of fish immunized by anal intubation route. The results confirm mucosal association of IgT and suggest that IgD may also be specialized in mucosal immunity and contribute to immediate protection to the fish at mucosal surfaces.
Collapse
Affiliation(s)
- M Makesh
- Department of Fish and Wildlife Sciences, College of Natural Resources, University of Idaho, Moscow, ID 83844-1136, USA; Aquatic Environment and Health Management Division, Central Institute of Fisheries Education, Versova, Mumbai 400061, India.
| | - Ponnerassery S Sudheesh
- Department of Fish and Wildlife Sciences, College of Natural Resources, University of Idaho, Moscow, ID 83844-1136, USA
| | - Kenneth D Cain
- Department of Fish and Wildlife Sciences, College of Natural Resources, University of Idaho, Moscow, ID 83844-1136, USA
| |
Collapse
|
44
|
SongLin G, PanPan L, JianJun F, JinPing Z, Peng L, LiHua D. A novel recombinant bivalent outer membrane protein of Vibrio vulnificus and Aeromonas hydrophila as a vaccine antigen of American eel (Anguilla rostrata). Fish Shellfish Immunol 2015; 43:477-484. [PMID: 25655329 DOI: 10.1016/j.fsi.2015.01.017] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2014] [Revised: 01/08/2015] [Accepted: 01/22/2015] [Indexed: 06/04/2023]
Abstract
The immogenicity of a novel vaccine antigen was evaluated after immunized American eels (Anguilla rostrata) with a recombinant bivalent expressed outer membrane protein (OMP) of Vibrio vulnificus and Aeromonas hydrophila. Three groups of eels were intraperitoneal (i.p) injected with phosphate-buffered saline (PBS group), formaline-killed-whole-cell (FKC) of A. hydrophila and V. vulnificus (FKC group) or the bivalent OMP (OMP group). On 14, 21, 28 and 42 days post-vaccination respectively, proliferation of the whole blood cells, titers of specific antibody and lysozyme activities of experimental eels were detected. On 28 day post-vaccination, eels from three groups were challenged by i.p injection of live A. hydrophila or V. vulnificus. The results showed that, compared with the PBS group, proliferation of whole blood cells in OMP group was significant enhanced on 28 days, and the serum titers of anti-A.hydrophila and anti-V. vulnificus antibody in eels of FKC and OMP group were significant increased on 14, 21 and 28d. Lysozyme Activities in serum, skin mucus, liver and kidney were significant changed between the three groups. Relative Percent Survival (RPS) after challenged A. hydrophila in KFC vs. PBS group and OMP vs. PBS group were 62.5% and 50% respectively, and the RPS challenged V. vulnificus in FKC and OMP vs. PBS group were 37.5% and 50% respectively. These results suggest that American eels immunized with the bivalent OMP would positively affect specific as well as non-specific immune parameters and protect against infection by the two pathogens in fresh water farming.
Collapse
Affiliation(s)
- Guo SongLin
- Fishery College of Jimei University/Engineering Research Center of Modern Eel Industrial Technology of the Ministry of Education, PRC. Jimei University, Xiamen, Fujian 361021, China.
| | - Lu PanPan
- Fishery College of Jimei University/Engineering Research Center of Modern Eel Industrial Technology of the Ministry of Education, PRC. Jimei University, Xiamen, Fujian 361021, China
| | - Feng JianJun
- Fishery College of Jimei University/Engineering Research Center of Modern Eel Industrial Technology of the Ministry of Education, PRC. Jimei University, Xiamen, Fujian 361021, China
| | - Zhao JinPing
- Fishery College of Jimei University/Engineering Research Center of Modern Eel Industrial Technology of the Ministry of Education, PRC. Jimei University, Xiamen, Fujian 361021, China
| | - Lin Peng
- Fishery College of Jimei University/Engineering Research Center of Modern Eel Industrial Technology of the Ministry of Education, PRC. Jimei University, Xiamen, Fujian 361021, China
| | - Duan LiHua
- Fishery College of Jimei University/Engineering Research Center of Modern Eel Industrial Technology of the Ministry of Education, PRC. Jimei University, Xiamen, Fujian 361021, China
| |
Collapse
|
45
|
Machado M, Azeredo R, Díaz-Rosales P, Afonso A, Peres H, Oliva-Teles A, Costas B. Dietary tryptophan and methionine as modulators of European seabass (Dicentrarchus labrax) immune status and inflammatory response. Fish Shellfish Immunol 2015; 42:353-62. [PMID: 25463296 DOI: 10.1016/j.fsi.2014.11.024] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2014] [Revised: 11/14/2014] [Accepted: 11/15/2014] [Indexed: 05/26/2023]
Abstract
Amino acids regulate key metabolic pathways important to immune responses and their nutritional supply may increase synthesis of immune-related proteins. The present study aimed to evaluate the effects of dietary supplementation of tryptophan and methionine on European seabass (Dicentrarchus labrax) cellular and humoral status. The immunomodulatory effects of tryptophan and methionine during an inflammatory insult was also evaluated after intraperitoneal injection with inactivated Photobacterium damselae subsp. piscicida (Phdp). A practical isonitrogenous (45% crude protein) and isolipidic (16% crude fat) diets was formulated to include fish meal and a blend of plant feedstuffs as protein sources and fish oil as the main lipid source (CRL diet). Two other diets were formulated similar to the control but including L-tryptophan or L-methionine at ×2 the requirement level (diets TRP and MET, respectively). European seabass weighing 275 g were fed the experimental diets for a period of 15 days before being sampled (trial 1). Then, fish were subjected to a peritoneal inflammation by intraperitoneally injecting UV killed Phdp (10(6) colony forming units ml(-1)) and sampled following 4 and 24 h post-injection (trial 2). Fish injected with a saline solution served as control. The haematological profile, peripheral cell dynamics and several plasma immune parameters were determined in trials 1 and 2, whereas cell migration to the inflammatory focus was also determined in trial 2. MET positively affected European seabass immune status by improving the peripheral leucocyte response, complement activity and bactericidal capacity, a stronger cellular recruitment to the inflammatory focus, and higher plasma peroxidase and bactericidal activities. TRP also seemed to improve immunostimulation, as there was a trend to augment both cell-mediated immunity and humoral capacity. However, TRP failed to improve an inflammatory response, verified by a decrease in blood phagocyte numbers and lack of immune cells recruitment. In summary, it is confirmed that MET has a pronounced influence on the innate immune response to inflammation, which is more evident than TRP, and raises its potential to incorporate in functional feeds to be used in prophylactic strategies against predictable unfavourable events.
Collapse
Affiliation(s)
- Marina Machado
- Centro Interdisciplinar de Investigação Marinha e Ambiental (CIIMAR/CIMAR), Universidade do Porto, Rua dos Bragas 289, 4050-123 Porto, Portugal; Instituto de Ciências Biomédicas Abel Salazar (ICBAS-UP), Universidade do Porto, Rua de Jorge Viterbo Ferreira 228, 4050-313 Porto, Portugal.
| | - Rita Azeredo
- Centro Interdisciplinar de Investigação Marinha e Ambiental (CIIMAR/CIMAR), Universidade do Porto, Rua dos Bragas 289, 4050-123 Porto, Portugal; Departamento de Biologia, Faculdade de Ciências da Universidade do Porto (FCUP), 4169-007 Porto, Portugal
| | - Patricia Díaz-Rosales
- Centro Interdisciplinar de Investigação Marinha e Ambiental (CIIMAR/CIMAR), Universidade do Porto, Rua dos Bragas 289, 4050-123 Porto, Portugal
| | - António Afonso
- Centro Interdisciplinar de Investigação Marinha e Ambiental (CIIMAR/CIMAR), Universidade do Porto, Rua dos Bragas 289, 4050-123 Porto, Portugal; Instituto de Ciências Biomédicas Abel Salazar (ICBAS-UP), Universidade do Porto, Rua de Jorge Viterbo Ferreira 228, 4050-313 Porto, Portugal
| | - Helena Peres
- Centro Interdisciplinar de Investigação Marinha e Ambiental (CIIMAR/CIMAR), Universidade do Porto, Rua dos Bragas 289, 4050-123 Porto, Portugal
| | - Aires Oliva-Teles
- Centro Interdisciplinar de Investigação Marinha e Ambiental (CIIMAR/CIMAR), Universidade do Porto, Rua dos Bragas 289, 4050-123 Porto, Portugal; Departamento de Biologia, Faculdade de Ciências da Universidade do Porto (FCUP), 4169-007 Porto, Portugal
| | - Benjamín Costas
- Centro Interdisciplinar de Investigação Marinha e Ambiental (CIIMAR/CIMAR), Universidade do Porto, Rua dos Bragas 289, 4050-123 Porto, Portugal.
| |
Collapse
|
46
|
Deutsch-Feldman M, Picetti R, Seip-Cammack K, Zhou Y, Kreek MJ. Effects of handling and vehicle injections on adrenocorticotropic and corticosterone concentrations in Sprague-Dawley compared with Lewis rats. J Am Assoc Lab Anim Sci 2015; 54:35-39. [PMID: 25651089 PMCID: PMC4311740] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Received: 03/11/2014] [Revised: 04/04/2014] [Accepted: 06/27/2014] [Indexed: 06/04/2023]
Abstract
The hypothalamic-pituitary-adrenal (HPA) axis is a key factor in the trajectory of the addiction-like cycle (a pattern of behavior characterized by escalating drug use, withdrawal, and relapse) in preclinical and clinical studies. Concentrations of HPA hormones change in laboratory animals in response to standard experimental procedures, including handling and vehicle injections. We compared HPA activity in adult male Lewis (inbred) and Sprague-Dawley (outbred) rats, 2 common strains in rodent models of addiction, after different schedules of handling and saline injections, to explore the extent to which HPA responses differ by strain and whether interindividual differences underlie addiction vulnerability. The 4 treatment conditions were no, short, or long handling and saline injections. In handled groups, rats were handled for 1 to 2 min for 3 times daily and were euthanized after 7 d (short handling) or 14 d (long handling). The injection schedule in the saline injection group mimicked that in a model of binge-like cocaine exposure. Across all treatment groups, concentrations of adrenocorticotropic hormone were higher in Sprague-Dawley than in Lewis rats. In Sprague-Dawley rats, corticosterone concentrations decreased after continued handling but remained constant in Lewis rats. Interindividual variability in hormone levels was greater in Sprague-Dawley than Lewis rats, although corticosterone variability decreased after continued handling. Prolactin did not differ between groups of either Sprague-Dawley and Lewis rats before or after handling. This study underscores the importance of prolonged handling before experimenter-provided drug-administration paradigms and of strain-associated differences that may affect study outcomes.
Collapse
Affiliation(s)
- Molly Deutsch-Feldman
- The Laboratory of the Biology of Addictive Diseases, The Rockefeller University, New York, New York, USA.
| | - Roberto Picetti
- The Laboratory of the Biology of Addictive Diseases, The Rockefeller University, New York, New York, USA
| | - Katharine Seip-Cammack
- The Laboratory of the Biology of Addictive Diseases, The Rockefeller University, New York, New York, USA; Mount Sinai School of Medicine, New York, New York, USA
| | - Yan Zhou
- The Laboratory of the Biology of Addictive Diseases, The Rockefeller University, New York, New York, USA
| | - Mary Jeanne Kreek
- The Laboratory of the Biology of Addictive Diseases, The Rockefeller University, New York, New York, USA
| |
Collapse
|
47
|
Farlora R, Hattori-Ihara S, Takeuchi Y, Hayashi M, Octavera A, Yoshizaki G. Intraperitoneal germ cell transplantation in the Nile tilapia Oreochromis niloticus. Mar Biotechnol (NY) 2014; 16:309-320. [PMID: 24096828 DOI: 10.1007/s10126-013-9551-y] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2013] [Accepted: 09/16/2013] [Indexed: 06/02/2023]
Abstract
Germ cell transplantation offers promising applications in finfish aquaculture and the preservation of endangered species. Here, we describe an intraperitoneal spermatogonia transplantation procedure in the Nile tilapia Oreochromis niloticus. Through histological analysis of early gonad development, we first determined the best suitable stage at which exogenous germ cells should be transplanted into the recipients. For the transplantation procedure, donor testes from a transgenic Nile tilapia strain carrying the medaka β-actin/enhanced green fluorescent protein (EGFP) gene were subjected to enzymatic dissociation. These testicular cells were then stained with PKH26 and microinjected into the peritoneal cavity of the recipient fish. To confirm colonization of the donor-derived germ cells, the recipient gonads were examined by fluorescent and confocal microscopy. PKH26-labeled cells exhibiting typical spermatogonial morphology were incorporated into the recipient gonads and were not rejected within 22 days posttransplantation. Long-term survival of transgenic donor-derived germ cells was then verified in the gonads of 5-month-old recipients and in the milt and vitelogenic oocytes of 1-year-old recipients, by means of PCR using EGFP-specific primers. EGFP-positive milt from adult male recipients was used to fertilize non-transgenic oocytes and produced transgenic offspring expressing the donor-derived phenotype. These results imply that long-term survival, proliferation, and differentiation of the donor-derived spermatogonia into vitelogenic oocytes and functional spermatozoa are all possible. Upon further improvements in the transplantation efficiency, this intraperitoneal transplantation system could become a valuable tool in the conservation of genetic resources for cichlid species.
Collapse
Affiliation(s)
- Rodolfo Farlora
- Laboratory of Biotechnology and Aquatic Genomics, Interdisciplinary Center for Aquaculture Research (INCAR), University of Concepcion, Concepción, Chile
| | | | | | | | | | | |
Collapse
|
48
|
Avci H, Birincioglu SS, Tanrikul TT, Epikmen ET, Metin N, Avsever ML. Experimental Lactococcus garvieae infection in rainbow trout, Oncorhynchus mykiss, Walbaum 1792: a comparative histopathological and immunohistochemical study. J Fish Dis 2014; 37:481-495. [PMID: 23957738 DOI: 10.1111/jfd.12132] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2013] [Revised: 04/17/2013] [Accepted: 04/20/2013] [Indexed: 06/02/2023]
Abstract
The aim of this study was to induce Lactococcus garvieae infection in young and adult fish through different routes [intraperitoneal (IP) and immersion (IM)] and to investigate the pathogenesis and histopathological and immunohistochemical findings comparatively. For this purpose, a total of 180 rainbow trout (90 young, 20 ± 5 g and 90 adult, 80 ± 10 g) obtained from a commercial fish farm were used. The fish were divided into eight groups, four experimental groups (Young-Adult IP groups and Young-Adult IM groups, each contain 30 fish) and four control groups (Young-Adult IP Control groups and Young-Adult IM control groups, each contain 15 fishes). The experimental study was conducted using L. garvieae, and confirmatory identification was performed by PCR. The sequence result of the PCR amplicon of 16S rDNA from isolate L. garvieae LAC1 was determined and deposited in the GenBank database under accession number KC883976. Fish in the IP groups were intraperitoneally administered an inoculate containing 10(6) cfu mL(-1) bacteria 0.1 mL. In the IM groups, fish were kept in inoculated water containing 10(8) cfu mL(-1) bacteria for 20 min. Mortality as well as clinical and pathological findings was recorded daily, and significant differences in macroscopic and microscopic results were observed between the IP and IM administration groups. All tissue samples were immunohistochemically stained by the avidin-biotin-peroxidase complex and immunofluorescence (IF) methods using polyclonal antibody to detect L. garvieae antigens. In immunoperoxidase staining in the IP groups, positive reactions to bacterial antigens were most commonly seen in the spleen, kidney, heart, liver, peritoneum and swim bladder. In the IM groups, bacterial antigens were most commonly found in the eye, gill, spleen and kidney. In the IF method, the distribution of antigens in tissue and organs was similar to the reactions with immunoperoxidase staining. Finally, in this experimental study, an important correlation was seen between the distribution of L. garvieae antigens and lesions developing in many organ and tissues.
Collapse
Affiliation(s)
- H Avci
- Faculty of Veterinary Medicine, Department of Pathology, University of Adnan Menderes, Aydin, Turkey
| | | | | | | | | | | |
Collapse
|
49
|
Wolf A, Hodneland K, Frost P, Hoeijmakers M, Rimstad E. Salmonid alphavirus-based replicon vaccine against infectious salmon anemia (ISA): impact of immunization route and interactions of the replicon vector. Fish Shellfish Immunol 2014; 36:383-392. [PMID: 24374059 DOI: 10.1016/j.fsi.2013.12.018] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2013] [Revised: 11/26/2013] [Accepted: 12/18/2013] [Indexed: 06/03/2023]
Abstract
A salmonid alphavirus (SAV)-based replicon encoding the infectious salmon anemia virus (ISAV) hemagglutinin-esterase (HE), pSAV/HE, is an efficacious vaccine against infectious salmon anemia (ISA). Delivered intramuscularly (i.m.), the replicon vaccine provides high protection against subsequent ISAV challenge in Atlantic salmon (Salmo salar), and induces a strong innate response locally at the injection site. This may be beneficial and could warrant reduced doses and improved efficacy compared to conventional DNA vaccines. In the present study, we found that intraperitoneal (i.p.) administration of the pSAV/HE replicon vaccine did not induce protection, neither alone or in combination with a sub-potent, inactivated low-dose ISAV vaccine given i.p. No significant differences between the two immunization routes regarding systemic immune responses could be observed. I.m. injection of the replicon vector encoding a non-viral gene or the protective glycoprotein (G protein) from the heterologous viral hemorrhagic septicemia virus (VHSV) induced no protection against ISA. Although the replicons without the ISAV HE did induce IFN-signaling pathways at the muscle injection site similar to the pSAV/HE replicon they did not improve the efficacy of a sub-potent inactivated low-dose ISAV vaccine delivered i.p. Moreover, there was a tendency for reduced efficacy of the pSAV/HE replicon vaccine injected i.m. when co-injected with the replicon encoding the VHSV G protein, which previously, after DNA vaccination, have been reported to induce cross-protection against heterologous virus challenge in fish.
Collapse
Affiliation(s)
- Astrid Wolf
- Department of Food Safety and Infection Biology, The Norwegian School of Veterinary Science, P.O. 8146 Dep, N-0033 Oslo, Norway.
| | - Kjartan Hodneland
- MSD Animal Health Innovation AS, Thormøhlensgate 55, N-5008 Bergen, Norway.
| | - Petter Frost
- MSD Animal Health Innovation AS, Thormøhlensgate 55, N-5008 Bergen, Norway.
| | | | - Espen Rimstad
- Department of Food Safety and Infection Biology, The Norwegian School of Veterinary Science, P.O. 8146 Dep, N-0033 Oslo, Norway.
| |
Collapse
|
50
|
Bae JS, Shim SH, Hwang SD, Kim JW, Park DW, Park CI. Molecular cloning and expression analysis of interleukin (IL)-15 and IL-15 receptor α from rock bream, Oplegnathus fasciatus. Fish Shellfish Immunol 2013; 35:1209-1215. [PMID: 23911652 DOI: 10.1016/j.fsi.2013.07.038] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2013] [Revised: 07/19/2013] [Accepted: 07/24/2013] [Indexed: 06/02/2023]
Abstract
Mammalian interleukin (IL)-15 plays an important role in the activation of CD8(+) T cells and natural killer (NK) cells along with its receptor α (IL-15Rα). To understand the potential roles of IL-15 and IL-15Rα in fish, we identified IL-15 and IL-15Rα cDNA from rock bream (Oplegnathus fasciatus) and investigated their gene expression profiles after bacterial and viral infection. Coding regions of rock bream (Rb) IL-15 and RbIL-15Rα cDNAs were 534 and 402 bp encoding 177 and 133 amino acid residues, respectively. The sushi domain of IL-15Rα was highly conserved between rock bream and other species. Unlike other IL-15Rαs, RbIL-15Rα does not have a transmembrane region. Gene expression of RbIL-15 and RbIL-15Rα was widely expressed in different tissues of healthy fish, especially immune-related tissues. RbIL-15 and RbIL-15Rα were highly induced in the kidney and spleen after infection with Edwardsiella tarda, Streptococcus iniae and red seabream iridovirus. Gene expression patterns of RbIL-15 and RbIL-15Rα were similar in the kidney and spleen after pathogen infection. However, these genes were differentially induced in the liver after pathogen infection. These results suggest that the different responses of RbIL-15 and RbIL-15Rα to pathogen infection may be induced by different tissues or cell types.
Collapse
Affiliation(s)
- Jin-Sol Bae
- Department of Marine Biology & Aquaculture, College of Marine Science, Gyeongsang National University, 445, Inpyong-dong, Tongyeong, Gyeongnam 650-160, Republic of Korea
| | | | | | | | | | | |
Collapse
|