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Liu J, Pan Y, Jin S, Zheng Y, Xu J, Fan H, Khalid M, Wang Y, Hu M. Effects of Citrobacter freundii on sturgeon: Insights from skin mucosal immunology and microbiota. FISH & SHELLFISH IMMUNOLOGY 2024; 149:109527. [PMID: 38561068 DOI: 10.1016/j.fsi.2024.109527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 03/21/2024] [Accepted: 03/27/2024] [Indexed: 04/04/2024]
Abstract
Skin mucus analysis has recently been used as a non-invasive method to evaluate for fish welfare. The present research study was conducted to examine the skin mucosal immunity and skin microbiota profiles of sturgeons infected with Citrobacter freundii. Our histology results showed that the thickness of the epidermal layer of skin remained thinner, and the number of mucous cells was significantly decreased in sturgeons after infection (p < 0.05). Total protein, alanine aminotransferase, aspartate aminotransferase, superoxide dismutase, and creatine kinase levels in the mucus showed biphasic pattern (decrease and then increase). Lactate dehydrogenase, lysozyme, and acid phosphatase activities in the mucus showed an increasing trend after infection. Furthermore, 16S rRNA sequencing also revealed that C. freundii infection also affected the diversity and community structure of the skin mucus microbiota. An increase in microbial diversity (p > 0.05) and a decrease in microbial abundance (p < 0.05) after infection were noted. The predominant bacterial phyla in the skin mucus were Proteobacteria, Fusobacteria, Bacteroidetes, Firmicutes, and Actinobacteria. Specifically, the relative abundance of Fusobacteria increased after infection. The predominant bacterial genera in the skin mucus were Cetobacterium, Pelomonas, Bradyrhizobium, Flavobacterium, and Pseudomonas. The relative abundance of Cetobacterium, Pseudomonas, and Flavobacterium increased after infection. Our current research findings will provide new insights into the theoretical basis for future research studies exploring the mechanism of sturgeon infection with C. freundii.
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Affiliation(s)
- Jiehao Liu
- International Research Center for Marine Biosciences, Shanghai Ocean University, Ministry of Science and Technology, Shanghai, 201306, China; Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Shanghai Ocean University, Shanghai, 201306, China
| | - Yiting Pan
- International Research Center for Marine Biosciences, Shanghai Ocean University, Ministry of Science and Technology, Shanghai, 201306, China; Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Shanghai Ocean University, Shanghai, 201306, China
| | - Shen Jin
- International Research Center for Marine Biosciences, Shanghai Ocean University, Ministry of Science and Technology, Shanghai, 201306, China; Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Shanghai Ocean University, Shanghai, 201306, China
| | - Yueping Zheng
- Joint Laboratory for Monitoring and Conservation of Aquatic Living Resources in the Yangtze Estuary, Shanghai, 200092, China; Shanghai Aquatic Wildlife Conservation and Research Center, Shanghai, 200092, China
| | - Jianan Xu
- Joint Laboratory for Monitoring and Conservation of Aquatic Living Resources in the Yangtze Estuary, Shanghai, 200092, China; Shanghai Aquatic Wildlife Conservation and Research Center, Shanghai, 200092, China
| | - Houyong Fan
- Joint Laboratory for Monitoring and Conservation of Aquatic Living Resources in the Yangtze Estuary, Shanghai, 200092, China; Shanghai Aquatic Wildlife Conservation and Research Center, Shanghai, 200092, China
| | - Mansoor Khalid
- International Research Center for Marine Biosciences, Shanghai Ocean University, Ministry of Science and Technology, Shanghai, 201306, China; Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Shanghai Ocean University, Shanghai, 201306, China
| | - Youji Wang
- International Research Center for Marine Biosciences, Shanghai Ocean University, Ministry of Science and Technology, Shanghai, 201306, China; Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Shanghai Ocean University, Shanghai, 201306, China
| | - Menghong Hu
- International Research Center for Marine Biosciences, Shanghai Ocean University, Ministry of Science and Technology, Shanghai, 201306, China; Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Shanghai Ocean University, Shanghai, 201306, China; Lingang Special Area Marine Biomedical Innovation Platform, Shanghai, 201306, China.
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Khalifa HA, Sharawy E, Younis EM, Abdelwarith AA, Ibrahim RE, Amer SA, Davies SJ, Abo-Elmaaty AMA. The therapeutic role of Azadirachta indica leaves ethanolic extract against detrimental effects of Aeromonas veronii infection in Nile tilapia, Oreochromis niloticus. FISH PHYSIOLOGY AND BIOCHEMISTRY 2024:10.1007/s10695-024-01349-y. [PMID: 38795269 DOI: 10.1007/s10695-024-01349-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Accepted: 04/18/2024] [Indexed: 05/27/2024]
Abstract
Bacterial pathogens cause high fish mortalities and in turn economic losses in fish farms. Innovative strategies should be applied to control bacterial infections instead of antibiotics to avoid the resistance problem. Consequently, the present investigation studied the curative potential of Azadirachta indica leave ethanolic extract (AILEE) on Aeromonas veronii infection in Oreochromis niloticus. A preliminary trial was assessed to evaluate the curative dose of AILEE which was found to be 2.5 mg/L. One hundred and sixty fish were divided into equal four groups in four replications, where group 1 and group 2 were non-challenged and treated with 0- and 2.5-mg/L AILEE, respectively. Group 3 and group 4 were challenged with A. veronii and treated with 0- and 2.5-mg/L AILEE, respectively for 10 days. A. veronii infection produced severe clinical manifestations and a high mortality rate in the infected fish. Furthermore, the infected fish exhibited a significant rise in the hepatorenal indices (aspartate aminotransferase, alanine aminotransferase, and creatinine), the oxidant biomarker (malondialdehyde), and the stress indicators (glucose and cortisol). A significant reduction in the protein profile and antioxidant/immune parameters (catalase, immunoglobulin M, lysozyme, nitric oxide, and phagocytic activity) was observed in the infected fish. Water application of the infected group to 2.5-mg/L AILEE notably ameliorated the hepatorenal indices, the oxidant biomarker, and the stress indicators. Furthermore, AILEE improved the antioxidant/immune indices. Water application of 2.5-mg/L AILEE could be useful against A. veronii infection in O. niloticus culture.
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Affiliation(s)
- Hesham A Khalifa
- Department of Pharmacology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, 44511, Egypt
| | - Esraa Sharawy
- Department of Pharmacology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, 44511, Egypt
| | - Elsayed M Younis
- Department of Zoology, College of Science, King Saud University, PO Box 2455, 11451, Riyadh, Saudi Arabia
| | - Abdelwahab A Abdelwarith
- Department of Zoology, College of Science, King Saud University, PO Box 2455, 11451, Riyadh, Saudi Arabia
| | - Rowida E Ibrahim
- Department of Aquatic Animal Medicine, Faculty of Veterinary Medicine, Zagazig University, P.O. Box 44511, Zagazig, Sharkia, Egypt.
| | - Shimaa A Amer
- Departments of Nutrition and Clinical Nutrition, Faculty of Veterinary Medicine, Zagazig University, Zagazig, 44511, Egypt
| | - Simon J Davies
- Aquaculture Nutrition Research Unit ANRU, College of Science and Engineering, Carna Research Station, Ryan Institute, University of Galway, Galway, H91V8Y1, Ireland
| | - Azza M A Abo-Elmaaty
- Department of Pharmacology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, 44511, Egypt
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Wang Y, Xie Z. Identification and drug resistance of pathogen of ulcerative skin disease and its immune responses and protective efficacy after vaccination in a giant spiny frog, Quasipaa spinosa. Microb Pathog 2024; 187:106526. [PMID: 38163491 DOI: 10.1016/j.micpath.2023.106526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2023] [Revised: 12/24/2023] [Accepted: 12/26/2023] [Indexed: 01/03/2024]
Abstract
OBJECTIVE In order to explore the pathogen of the ulcerative skin disease in giant spiny frog (Quasipaa spinosa), and to provide theoretical basis for the prevention and control of the disease in practical production, this study was carried out to isolate and identify the pathogenic bacteria from the sick frogs suffering from rotting skin disease and to carry out the immunization test of the inactivated vaccine. METHODS Physiological and biochemical characterization, and molecular biology of the pathogenic bacteria were identified, and drug screening and immunization responses were also carried out. RESULTS The dominant bacterium QS01 was isolated from the lesions of diseased giant spiny frogs, which was confirmed to be the causative agent of the rotting skin disease of giant spiny frogs by artificial regression infection test. Based on the fact that the pathogen is a gram-negative short bacterium, its phenotypic characteristics and 16S rRNA and gyrB gene sequences were analyzed, and the bacterium was determined to be Citrobacter freundii. The results of the drug sensitivity test showed that the bacterium was sensitive to 11 antibiotics, including Enrofloxacin, Fleroxacin and Ciprofloxacin, including three non-polluting drugs such as Florfenicol, Roxithromycin and Thiamphenicol, as well as three Chinese herbal medicines such as Rheum officinale Baill, Coptis chinensis Franch and Scutellaria baicalensis Georgi. Most non-specific immune responses could go to recovery in 24h. The frogs were vaccinated with QS01 formaldehyde inactivated vaccine by injection, immersion and spraying, and the serum antibody potency of the three immunized groups with the average potency reached the peak at the 20th d after immunization, and the serum antibody potency of the injected immunized group was at the highest ratio of 1:64-128 (101.6), while the immersed group and the spraying group attained the ratio of 1:16-32 (20.2) and 1:16-32 (16) respectively, and lasted until the 30th d. The control group that was not immunized had the highest serum antibody potency of 1:16-32 (20.2) and 1:16-32 (16), and continued until the 30th d. The control group that was not immunized was not immunized. The serum antibody potency of the unimmunized control group was 1:2 to 2(2). The immunoprotection rates after takedown were 100 %, 85.71 % and 71.43 %, respectively. CONCLUSION C. freundii is the pathogen of the disease in this farm, and the vaccination by immersion and spraying can effectively prevent and control the rotting skin disease in frogs. These results revealed pathogenicity of C. freundii and its activation of host immune response, which will provide a scientific reference for the aquaculture and disease prevention in Q. spinosa culture.
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Affiliation(s)
- Yongpeng Wang
- School of Medical Technology, Pingxiang Health Vocational College, Pingxiang, 337000, China; Graduate School, St. Paul University Philippines, Tuguegarao, Cagayan, Philippines.
| | - Zhigang Xie
- Institute of Hydrobiology, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310000, China.
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Duman M, Satıcıoğlu IB, Janda JM. A Review of the Industrial Importance, Common Bacterial Diseases, and Zoonotic Risks of Freshwater Aquarium Fish. Vector Borne Zoonotic Dis 2024; 24:69-85. [PMID: 38133524 DOI: 10.1089/vbz.2023.0094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2023] Open
Abstract
Background: The ever-increasing popularity of home aquariums, most often involving freshwater varieties, has exploded in recent years partially due to the Coronavirus pandemic and related to stay-at-home public health precautions for social distancing. With this ever-increasing popularity of aquariums as a hobby, and whether this involves freshwater or marine fish species, a number of important economic, ecological, and public health issues arise for both fish and hobbyists alike. Materials and Methods: This review highlights the history and genesis of aquariums as both a hobby and an important economic factor (industrial, commercial) for many countries on a global basis. Types of aquarium fish are described, and culture conditions leading to homeostasis in aquatic environments are detailed. When these conditions are not met and aquatic systems are out of balance, the disease can result due to stressed fish. Results: Major bacterial diseases associated with freshwater aquarium fish are reviewed, as are potential human infections related to the care and maintenance of home aquaria. Conclusion: Besides, scientific information was also combined with the false facts of hobbyists who tried to identify and treat diseases during an outbreak in the aquarium. Finally, unresolved issues and important misconceptions regarding the field are discussed.
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Affiliation(s)
- Muhammed Duman
- Aquatic Animal Disease Department, Faculty of Veterinary Medicine, Bursa Uludag University, Bursa, Turkey
| | - Izzet Burçin Satıcıoğlu
- Aquatic Animal Disease Department, Faculty of Veterinary Medicine, Bursa Uludag University, Bursa, Turkey
| | - J Michael Janda
- Department of Public Health Services, Kern County, Bakersfield, California, USA
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Laltlanmawia C, Saha H, Ghosh L, Saha RK, Malla S. Identification and analysis of pathogenic bacteria causing outbreaks in Indian major carp aquaculture of Tripura. JOURNAL OF AQUATIC ANIMAL HEALTH 2023; 35:263-279. [PMID: 37584068 DOI: 10.1002/aah.10198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 06/20/2023] [Accepted: 08/08/2023] [Indexed: 08/17/2023]
Abstract
OBJECTIVE The objective of this study was to investigate bacterial disease outbreaks in Indian major carp from aquaculture systems in Tripura, India, and identify the bacterial species associated with those outbreaks. METHODS A 3-year surveillance was conducted in eight districts of Tripura, during which nine bacterial disease outbreaks were recorded. Fourteen bacterial strains isolated from diseased Indian major carp were selected and identified using phenotypic, molecular (16S ribosomal RNA gene), and phylogenetic analyses. In vitro pathogenicity studies were performed to assess the potential pathogenicity of the isolated bacteria. RESULT The selected isolated strains were preliminarily identified under the genera Aeromonas (9 isolates), Acinetobacter (1 isolate), Citrobacter (3 isolates), and Pseudomonas (1 isolate). Molecular and phylogenetic analyses confirmed the species of the isolated bacteria, including Aeromonas jandaei (strains COF_AHE09 and COF_AHE61), Aeromonas veronii (strains COF_AHE13, COF_AHE52, COF_AHE55, COF_AHE56, and COF_AHE62), Aeromonas hydrophila (strains COF_AHE51 and COF_AHE58), Acinetobacter pittii (strain COF_AHE14), Citrobacter freundii (strains COF_AHE20, COF_AHE57, and COF_AHE59), and Pseudomonas aeruginosa (strain COF_AHE54). Behavioral and clinical signs observed in the diseased fish, such as lethargy, skin hemorrhaging, ulcers, fin and tail rot, exophthalmia, distended abdomen, scale loss, and skin discoloration, indicated the presence of bacterial septicemia. The in vitro pathogenicity studies highlighted the potential role of these bacteria in disease development, especially under environmental stress. CONCLUSION This study provides valuable insights into the diversity of bacterial species associated with bacterial disease outbreaks in Indian major carp from aquaculture systems in Tripura. It serves as the first comprehensive investigation of its kind, contributing to our understanding of bacterial infections in Indian major carp.
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Affiliation(s)
- C Laltlanmawia
- College of Fisheries, Central Agricultural University (Imphal), Lembucherra, West Tripura, India
| | - Himadri Saha
- College of Fisheries, Central Agricultural University (Imphal), Lembucherra, West Tripura, India
| | - Lija Ghosh
- College of Fisheries, Central Agricultural University (Imphal), Lembucherra, West Tripura, India
| | - Ratan Kumar Saha
- College of Fisheries, Central Agricultural University (Imphal), Lembucherra, West Tripura, India
| | - Supratim Malla
- College of Fisheries, Central Agricultural University (Imphal), Lembucherra, West Tripura, India
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Gong C, Guo M, Lou J, Zhang L, An Z, Vakharia VN, Kong W, Liu X. Identification and characterization of a highly virulent Citrobacter freundii isolate and its activation on immune responses in largemouth bass (Micropterus salmoides). FISH & SHELLFISH IMMUNOLOGY 2023; 143:109224. [PMID: 37956797 DOI: 10.1016/j.fsi.2023.109224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 11/04/2023] [Accepted: 11/08/2023] [Indexed: 11/15/2023]
Abstract
Citrobacter freundii, a common pathogen of freshwater fish, causes significant commercial losses to the global fish farming industry. In the present study, a highly pathogenic C. freundii strain was isolated and identified from largemouth bass (Micropterus salmoides). The pathogenicity and antibiotic sensitivity of the C. freundii strain were evaluated, and the histopathology and host immune response of largemouth bass infected with C. freundii were investigated. The results showed that C. freundii was the pathogen causing disease outbreaks in largemouth bass, and the infected fish showed typical signs of acute hemorrhages and visceral enlargement. Antimicrobial susceptibility testing showed that the C. freundii strain was resistant to Kanamycin, Medimycin, Clindamycin, Penicillin, Oxacillin, Ampicillin, Cephalexin, Cefazolin, Cefradine and Vancomycin. Histopathological analysis showed different pathological changes in major tissues of diseased fish. In addition, humoral immune factors such as superoxide dismutase (SOD), catalase (CAT) and lysozyme (LZM) were used as serum indicators to evaluate the immune response of largemouth bass after infection. Quantitative real-time PCR (qRT-PCR) was performed to investigate the expression pattern of immune-related genes (CXCR1, IL-8, IRF7, IgM, CD40, IFN-γ, IL-1β, Hep1, and Hep2) in liver, spleen, and head kidney tissues, which demonstrated a strong immune response induced by C. freundii infection in largemouth bass. The present study provides insights into the pathogenic mechanism of C. freundii and immune response in largemouth bass, promoting the prevention and treatment of diseases caused by C. freundii infection.
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Affiliation(s)
- Cuiping Gong
- Huzhou Academy of Agricultural Sciences, Huzhou, 313000, China
| | - Mengya Guo
- College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, China
| | - Jianfeng Lou
- Huzhou Nanxun District Agricultural Technology Extension Service Center, Huzhou, 313000, China
| | - Liwen Zhang
- College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, China
| | - Zhenhua An
- College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, China
| | - Vikram N Vakharia
- Institute of Marine and Environmental Technology, University of Maryland Baltimore Country, Baltimore, MD, 21202, USA
| | - Weiguang Kong
- Key Laboratory of Breeding Biotechnology and Sustainable Aquaculture, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China.
| | - Xiaodan Liu
- College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, China; International Research Laboratory of Prevention and Control of Important Animal Infectious Diseases and Zoonotic Diseases of Jiangsu Higher Education Institutions, Yangzhou University, Yangzhou, China.
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Stante M, Weiland-Bräuer N, Repnik U, Werner A, Bramkamp M, Chibani CM, Schmitz RA. Four Novel Caudoviricetes Bacteriophages Isolated from Baltic Sea Water Infect Colonizers of Aurelia aurita. Viruses 2023; 15:1525. [PMID: 37515211 PMCID: PMC10383413 DOI: 10.3390/v15071525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 07/04/2023] [Accepted: 07/06/2023] [Indexed: 07/30/2023] Open
Abstract
The moon jellyfish Aurelia aurita is associated with a highly diverse microbiota changing with provenance, tissue, and life stage. While the crucial relevance of bacteria to host fitness is well known, bacteriophages have often been neglected. Here, we aimed to isolate virulent phages targeting bacteria that are part of the A. aurita-associated microbiota. Four phages (Pseudomonas phage BSwM KMM1, Citrobacter phages BSwM KMM2-BSwM KMM4) were isolated from the Baltic Sea water column and characterized. Phages KMM2/3/4 infected representatives of Citrobacter, Shigella, and Escherichia (Enterobacteriaceae), whereas KMM1 showed a remarkably broad host range, infecting Gram-negative Pseudomonas as well as Gram-positive Staphylococcus. All phages showed an up to 99% adsorption to host cells within 5 min, short latent periods (around 30 min), large burst sizes (mean of 128 pfu/cell), and high efficiency of plating (EOP > 0.5), demonstrating decent virulence, efficiency, and infectivity. Transmission electron microscopy and viral genome analysis revealed that all phages are novel species and belong to the class of Caudoviricetes harboring a tail and linear double-stranded DNA (formerly known as Siphovirus-like (KMM3) and Myovirus-like (KMM1/2/4) bacteriophages) with genome sizes between 50 and 138 kbp. In the future, these isolates will allow manipulation of the A. aurita-associated microbiota and provide new insights into phage impact on the multicellular host.
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Affiliation(s)
- Melissa Stante
- Institute for General Microbiology, Christian Albrechts University, Am Botanischen Garten 1-9, D-24118 Kiel, Germany; (M.S.); (N.W.-B.); (A.W.); (M.B.); (C.M.C.)
| | - Nancy Weiland-Bräuer
- Institute for General Microbiology, Christian Albrechts University, Am Botanischen Garten 1-9, D-24118 Kiel, Germany; (M.S.); (N.W.-B.); (A.W.); (M.B.); (C.M.C.)
| | - Urska Repnik
- Central Microscopy Facility, Christian Albrechts University, Am Botanischen Garten 1-9, D-24118 Kiel, Germany;
| | - Almut Werner
- Institute for General Microbiology, Christian Albrechts University, Am Botanischen Garten 1-9, D-24118 Kiel, Germany; (M.S.); (N.W.-B.); (A.W.); (M.B.); (C.M.C.)
| | - Marc Bramkamp
- Institute for General Microbiology, Christian Albrechts University, Am Botanischen Garten 1-9, D-24118 Kiel, Germany; (M.S.); (N.W.-B.); (A.W.); (M.B.); (C.M.C.)
- Central Microscopy Facility, Christian Albrechts University, Am Botanischen Garten 1-9, D-24118 Kiel, Germany;
| | - Cynthia M. Chibani
- Institute for General Microbiology, Christian Albrechts University, Am Botanischen Garten 1-9, D-24118 Kiel, Germany; (M.S.); (N.W.-B.); (A.W.); (M.B.); (C.M.C.)
| | - Ruth A. Schmitz
- Institute for General Microbiology, Christian Albrechts University, Am Botanischen Garten 1-9, D-24118 Kiel, Germany; (M.S.); (N.W.-B.); (A.W.); (M.B.); (C.M.C.)
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Wang L, Wang C, Huang C, Gao C, Wang B, He J, Yan Y. Dietary berberine against intestinal oxidative stress, inflammation response, and microbiota disturbance caused by chronic copper exposure in freshwater grouper (Acrossocheilus fasciatus). FISH & SHELLFISH IMMUNOLOGY 2023:108910. [PMID: 37385463 DOI: 10.1016/j.fsi.2023.108910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Revised: 06/18/2023] [Accepted: 06/20/2023] [Indexed: 07/01/2023]
Abstract
Berberine (BBR) is known for its strong antioxidant, anti-inflammatory, and capacity to preserve intestinal microbiota balance in fish. This study aimed to investigate the protective effects of berberine against copper-induced toxicity in the intestine of freshwater grouper Acrossocheilus fasciatus. The experiment involved four groups: a control group, a Cu group exposed to 0.02 mg/L Cu2+, and two BBR groups fed with 100 or 400 mg/kg of berberine diets and exposed to the same Cu2+ concentration. Three replicates of healthy fish (initial weight 1.56 ± 0.10 g) were subjected to their respective treatments for 30 days. Results showed that none of the treatments significantly affected the survival rate, final weight, weight gain, and feed intake (P > 0.05). However, supplementation with 100 and 400 mg/kg of BBR significantly lowered the antioxidant activities, and glutathione peroxidase (gpx) and superoxide dismutase (sod) expression levels, as well as reduced malondialdehyde (MDA) content caused by Cu2+ exposure (P < 0.05). Berberine inclusion significantly downregulated proinflammatory factors NLR family pyrin domain containing 3 (nlrp3), interleukin 1 beta (il1β), interleukin 6 cytokine family signal transducer (il6st) but upregulated transforming growth factor beta 1 (tgfβ1) and heat shock 70kDa protein (hsp70) expression. Moreover, berberine at both levels maintained the intestinal structural integrity and significantly improved gap junction gamma-1 (gjc1) mRNA level compared to the Cu group (P < 0.05). Based on 16S rDNA sequencing, the richness and diversity of intestinal microbiota in different groups were not significantly influenced. Berberine reduced the Firmicutes/Bacteroidota ratio and stifled the growth of some specific pathogenic bacteria such as Pseudomonas, Citrobacter, and Acinetobacter, while boosting the richness of potential probiotic bacteria, including Roseomonas and Reyranella compared with the Cu group. In conclusion, berberine showed significant protective effects against Cu2+-induced intestinal oxidative stress, inflammation response, and microbiota disturbance in freshwater grouper.
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Affiliation(s)
- Lei Wang
- School of Ecology and Environment, Anhui Normal University, Wuhu, 241002, China; Collaborative Innovation Center of Recovery and Reconstruction of Degraded Ecosystem in Wanjiang Basin Co-founded by Anhui Province and Ministry of Education, Anhui Normal University, Wuhu, 241002, China; Provincial Key Laboratory of Biotic Environment and Ecological Safety in Anhui, Wuhu, 241002, China.
| | - Chenyang Wang
- School of Ecology and Environment, Anhui Normal University, Wuhu, 241002, China
| | - Chenchen Huang
- School of Ecology and Environment, Anhui Normal University, Wuhu, 241002, China
| | - Chang Gao
- School of Ecology and Environment, Anhui Normal University, Wuhu, 241002, China
| | - Bin Wang
- School of Ecology and Environment, Anhui Normal University, Wuhu, 241002, China
| | - Jiang He
- Anhui Key Laboratory of Aquaculture and Stock Enhancement, Fisheries Research Institution, Anhui Academy of Agricultural Sciences, Hefei, China.
| | - Yunzhi Yan
- School of Ecology and Environment, Anhui Normal University, Wuhu, 241002, China; Collaborative Innovation Center of Recovery and Reconstruction of Degraded Ecosystem in Wanjiang Basin Co-founded by Anhui Province and Ministry of Education, Anhui Normal University, Wuhu, 241002, China; Provincial Key Laboratory of Biotic Environment and Ecological Safety in Anhui, Wuhu, 241002, China.
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Ishola A, Knott M, Misihairabgwi J. In vivo antibacterial activity of Plocamium rigidum extract on Escherichia coli O157:H7 in experimentally infected Balb/c mice. SCIENTIFIC AFRICAN 2022. [DOI: 10.1016/j.sciaf.2022.e01458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Cao H, Huang X, Gu Y, Zheng X, Xu L, Gai C. Protective effects of Bacillus licheniformis against Citrobacter freundii infection in Chinese mitten crab Eriocheir sinensis. J Invertebr Pathol 2022; 193:107805. [DOI: 10.1016/j.jip.2022.107805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 07/07/2022] [Accepted: 07/27/2022] [Indexed: 11/28/2022]
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Guma S, Jiang Z, Zhang Y, Wu C, Chen Z, Xu J, Jiang Q, Zhang X, Wang C, Gao X. The pathogenic characterization of Citrobacter freundii and its activation on immune related genes in Macrobrachium nipponense. Microb Pathog 2022; 169:105682. [PMID: 35850373 DOI: 10.1016/j.micpath.2022.105682] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 07/13/2022] [Accepted: 07/13/2022] [Indexed: 11/25/2022]
Abstract
Out breaks of mass mortalities occurred in Macrobrachium nipponense farms in Jintan county, Jiangsu Province. The bacterial isolates from M. nipponense exhibited the same phenotypic traits and biochemical characteristics, and were identified as Citrobacter freundii according to biochemical characteristics and molecular identification. The infection test revealed that the strain YG2 was pathogenic to M. nipponense, and the half lethal dose (LD50) was 3.35 × 105 CFU/mL at 7 d post-infection. Detection of virulence genes indicated that YG2 was positive for cfa, ureG, ureF, ureE, ureD, viaB, ompX, and LDH. Furthermore, the results of extracellular enzyme analysis revealed that the strain can produce protease, amylase, lecithin, urease, and hemolysin. Antibiotic resistance results showed that the isolate was resistant to ampicillin, cefazolin, cephalothin, cefoxitin, aboren, doxycycline, neomycin, penicillin, erythromycin, and vancomycin. The expression level of MyD88, α2M, CDSP, and Relish were detected in hepatopancreas, hemolymph, gills and intestine tissues by quantitive real-time PCR (qRT-PCR), and clear transcriptional activation of these genes were observed in M. nipponense after C. freundii infection. These results revealed pathogenicity of C. freundii and its activation of host immune response, which will provide a scientific reference for the breeding and disease prevention in M. nipponense culture.
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Affiliation(s)
- Sheham Guma
- College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, China
| | - Ziyan Jiang
- College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, China
| | - Yingjie Zhang
- College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, China
| | - Congcong Wu
- College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, China
| | - Zhen Chen
- College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, China
| | - Jingwen Xu
- College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, China
| | - Qun Jiang
- College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, China
| | - Xiaojun Zhang
- College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, China
| | - Chunbo Wang
- Jiangsu Jiakexing Crab Industry Co. Ltd., Yangzhou, 225116, China
| | - Xiaojian Gao
- College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, China.
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12
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Phytocompounds as an Alternative Antimicrobial Approach in Aquaculture. Antibiotics (Basel) 2022; 11:antibiotics11040469. [PMID: 35453220 PMCID: PMC9031819 DOI: 10.3390/antibiotics11040469] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Revised: 03/02/2022] [Accepted: 03/04/2022] [Indexed: 02/04/2023] Open
Abstract
Despite culturing the fastest-growing animal in animal husbandry, fish farmers are often adversely economically affected by pathogenic disease outbreaks across the world. Although there are available solutions such as the application of antibiotics to mitigate this phenomenon, the excessive and injudicious use of antibiotics has brought with it major concerns to the community at large, mainly due to the rapid development of resistant bacteria. At present, the use of natural compounds such as phytocompounds that can be an alternative to antibiotics is being explored to address the issue of antimicrobial resistance (AMR). These phytocompounds are bioactive agents that can be found in many species of plants and hold much potential. In this review, we will discuss phytocompounds extracted from plants that have been evidenced to contain antimicrobial, antifungal, antiviral and antiparasitic activities. Further, it has also been found that compounds such as terpenes, phenolics, saponins and alkaloids can be beneficial to the aquaculture industry when applied. This review will focus mainly on compounds that have been identified between 2000 and 2021. It is hoped this review will shed light on promising phytocompounds that can potentially and effectively mitigate AMR.
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Thanigaivel S, Thomas J, Vickram A, Anbarasu K, Karunakaran R, Palanivelu J, Srikumar P. Efficacy of encapsulated biogenic silver nanoparticles and its disease resistance against Vibrio harveyi through oral administration in Macrobrachium rosenbergii. Saudi J Biol Sci 2021; 28:7281-7289. [PMID: 34867032 PMCID: PMC8626337 DOI: 10.1016/j.sjbs.2021.08.037] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Revised: 07/05/2021] [Accepted: 08/12/2021] [Indexed: 12/25/2022] Open
Abstract
Biological synthesis of silver nanoparticles (AgNPs) by Cheatomorpha antennia and its in vitro and in vivo antibacterial activity against Vibrio harveyi in Macrobrachium rosenbergii was demonstrated in the study. In vitro growth curve analysis, cell viability and bacterial inhibitory assays were performed to test the efficacy of synthesised AgNPs against bacteria. Sodium caseinate was used as an encapsulating agent to deliver the antibacterial drugs and the commercial process of microencapsulation comprises the antibacterial bioelements for oral administration to improve the disease resistance of AgNPs against V. harveyi due to the eco-friendly for non-toxic behaviour of nanoparticle and their treatment. Characterisation of antibacterial silver was performed by UV spectroscopy, X-ray diffraction, Fourier Transform Infrared spectroscopy and Scanning Electron Microscopy. The peak at 420 nm showed the presence of nanoparticles in the solution and the crystal nature of the particle was identified by the XRD. FTIR characterised the functional harveyi biomolecules and further SEM confirmed the size of the nanoparticles around 24 ± 2.4 nm. Experimental pathogenicity of V. harveyi showed 100% mortality at the 120th hour. Treatment of encapsulated AgNPs was administered orally for the relative percentage of survival which acquired almost 90% of survival till 30 days of exposure. In conclusion, the microencapsulation of AgNPs in the biopolymer matrices promotes the health, growth responses, immunity and disease resistance of encapsulated AgNPs with an improved relative percentage of survival.
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Affiliation(s)
- S. Thanigaivel
- Department of Biotechnology, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Chennai, Tamil Nadu, India
| | - John Thomas
- Center for NanoBiotechnology (CNBT), Vellore Institute of Technology, Vellore, Tamil Nadu, India
| | - A.S. Vickram
- Department of Biotechnology, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Chennai, Tamil Nadu, India
| | - K. Anbarasu
- Department of Bioinformatics, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Chennai, Tamil Nadu, India
| | - Rohini Karunakaran
- Unit of Biochemistry, Faculty of Medicine, AIMST University, Semeling, Bedong, Kedah, Malaysia
| | - Jeyanthi Palanivelu
- Department of Biotechnology, Vel Tech Rangarajan Dr. Sagunthala R&D Institute of Science and Technology, Chennai, Tamil Nadu, India
| | - P.S. Srikumar
- Unit of Psychiatry, Faculty of Medicine, AIMST University, Semeling, Bedong, Kedah, Malaysia
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14
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Ghosh AK, Panda SK, Luyten W. Anti-vibrio and immune-enhancing activity of medicinal plants in shrimp: A comprehensive review. FISH & SHELLFISH IMMUNOLOGY 2021; 117:192-210. [PMID: 34400334 DOI: 10.1016/j.fsi.2021.08.006] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2021] [Revised: 08/03/2021] [Accepted: 08/10/2021] [Indexed: 06/13/2023]
Abstract
Disease epidemics in shrimp aquaculture increase apace with the development of aquaculture systems throughout the world. The disease caused by Vibrio spp. (vibriosis) is considered the most devastating, which has made it the most feared bacterial disease in the shrimp sector. In aquaculture, several strategies have already been applied to control Vibrio strains, including chemicals, probiotics, antibiotics, natural products from plants, including plant oils; hence, there has been considerable attention for using plants in shrimp aquaculture to provide sustainable, eco-friendly and safe compounds, such as alkaloids, saponins, terpenoids and flavonoids for replacing chemical compounds and antibiotics in current aquaculture. Medicinal plants may also have immunostimulating activity, increase growth and resistance in shrimps. The present paper aims to review the inhibition of Vibrio spp. in shrimp by medicinal plants, using both in vitro or/and in vivo techniques. Several medicinal plants appear capable of inhibiting growth of Vibrio pathogens outside living shrimp or in the body of shrimp, through enhancing growth and immune capacity when shrimps are fed or injected with them. In the current review Gracilaria spp. (Gracilariaceae family) and Sargassum spp. (family Sargassaceae) have been used most for in vitro and in vivo experiments. Among the terrestrial plants, Eucalyptus camaldulensis, Psidium guajava, Rhodomyrtus tomentosa, and Syzygium cumini (Myrtaceae family) had significant activity against Vibrio.
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Affiliation(s)
- Alokesh Kumar Ghosh
- Animal Physiology and Neurobiology Section, Department of Biology, Faculty of Science, KU Leuven, Belgium; Fisheries and Marine Resource Technology Discipline, Khulna University, Khulna, Bangladesh.
| | - Sujogya Kumar Panda
- Center of Environment Climate Change and Public Health, Utkal University, Odisha, India
| | - Walter Luyten
- Animal Physiology and Neurobiology Section, Department of Biology, Faculty of Science, KU Leuven, Belgium
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Seth M, Chandrasekaran N, Mukherjee A, Thomas J. Pathogenicity of Edwardsiella tarda in Oreochromis mossambicus and treatment by Tamarindus indica seed extract. AQUACULTURE INTERNATIONAL 2021; 29:1829-1841. [DOI: 10.1007/s10499-021-00719-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Accepted: 05/10/2021] [Indexed: 10/26/2023]
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16
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Efficacy of the Aqueous Extract of Azadirachta indica Against the Marine Parasitic Leech and Its Phytochemical Profiling. Molecules 2021; 26:molecules26071908. [PMID: 33805254 PMCID: PMC8037938 DOI: 10.3390/molecules26071908] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Revised: 03/08/2021] [Accepted: 03/09/2021] [Indexed: 11/25/2022] Open
Abstract
Zeylanicobdella arugamensis (Hirudinea), a marine parasitic leech, not only resulted in the mortality of the host fish (Groupers) but also caused economic losses. The current study aimed to elucidate the antiparasitic efficacy of the aqueous extract of the Azadirachta indica leaves against Z. arugamensis and to profile the composition via LC-Q Exactive HF Orbitrap mass spectrometry. Different concentrations (25, 50 and 100 mg/mL) of A. indica extract were prepared and tested on the parasitic leeches. The total mortality of leeches was noticed with an exposure to the A. indica aqueous extract. The average times required for the aqueous extract at concentrations of 25, 50 and 100 mg/mL to kill the leeches were 42.65 ± 9.20, 11.69 ± 1.11 and 6.45 ± 0.45 min, respectively, in a dose-dependent manner. The Orbitrap mass spectrometry analysis indicated the presence of five flavonoids (myricetin 3-O-galactoside, trifolin, isorhamnetin, quercetin and kaempferol), four aromatics (4-methoxy benzaldehyde, scopoletin, indole-3-acrylic acid and 2,4-quinolinediol), three phenolics (p-coumaric acid, ferulic acid and phloretin) and two terpenoids (pulegone and caryophyllene oxide). Thus, our study indicates that A. indica aqueous extract is a good source of metabolites with the potential to act as a biocontrol agent against the marine parasitic leech in aquaculture.
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Yang J, Tian T, Xiao K, Zeng Q, Tan C, Du H. Pathogenic infection and immune-related gene expression of Chinese sturgeon (Acipenser sinensis) challenged by Citrobacter freundii. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2021; 114:103872. [PMID: 32949686 DOI: 10.1016/j.dci.2020.103872] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 07/07/2020] [Accepted: 09/13/2020] [Indexed: 06/11/2023]
Abstract
Citrobacter freundii is one of the important bacterial diseases responsible for disease outbreaks to wild and cultured fishes globally. However, no known empirical research has focused on exploring relationships between immune response after C. freundii infection in sturgeons. In this study, C. freundii was isolated and identified from artificially breeding Chinese sturgeon, and global measurement of transcriptome response to C. freundii infection in head-kidney and spleen of A. sinensis were conducted to the acknowledgement of the potential mechanisms of pathogen-host interaction triggered by the bacterial infection. In total, differentially expressed genes which significantly associated with immune responses were found to be participated in antigen processing and presentation (MHC I, MHC II, HspA1, Hsp90A, Hsp70, CTSL, and CTSE), and acute phase response (serotransferrin and CP), as well as changing of other immune-related cytokine, such as chemokine and interferon, which proving their reacting and regulatory role during the response of thehost against C. freundii infection in fish. C. freundii can cause serious disease in sturgeon species was first reported in this study, and innate immune responses to C. freundii infection in this study will be conducive to understand the defense mechanisms and making appropriate prevention strategies in A. sinensis aquaculture operations.
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Affiliation(s)
- Jing Yang
- Institute of Chinese Sturgeon, China Three Gorges Corporation, Yichang, Hubei, 443100, China; Hubei Key Laboratory of Three Gorges Project for Conservation of Fishes, Institute of Chinese Sturgeon, China Three Gorges Corporation, Yichang, Hubei, 443100, China.
| | - Tian Tian
- Institute of Chinese Sturgeon, China Three Gorges Corporation, Yichang, Hubei, 443100, China; Hubei Key Laboratory of Three Gorges Project for Conservation of Fishes, Institute of Chinese Sturgeon, China Three Gorges Corporation, Yichang, Hubei, 443100, China.
| | - Kan Xiao
- Institute of Chinese Sturgeon, China Three Gorges Corporation, Yichang, Hubei, 443100, China; Hubei Key Laboratory of Three Gorges Project for Conservation of Fishes, Institute of Chinese Sturgeon, China Three Gorges Corporation, Yichang, Hubei, 443100, China.
| | - Qingkai Zeng
- Institute of Chinese Sturgeon, China Three Gorges Corporation, Yichang, Hubei, 443100, China; Hubei Key Laboratory of Three Gorges Project for Conservation of Fishes, Institute of Chinese Sturgeon, China Three Gorges Corporation, Yichang, Hubei, 443100, China.
| | - Chun Tan
- Institute of Chinese Sturgeon, China Three Gorges Corporation, Yichang, Hubei, 443100, China; Hubei Key Laboratory of Three Gorges Project for Conservation of Fishes, Institute of Chinese Sturgeon, China Three Gorges Corporation, Yichang, Hubei, 443100, China.
| | - Hejun Du
- Institute of Chinese Sturgeon, China Three Gorges Corporation, Yichang, Hubei, 443100, China; Hubei Key Laboratory of Three Gorges Project for Conservation of Fishes, Institute of Chinese Sturgeon, China Three Gorges Corporation, Yichang, Hubei, 443100, China.
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18
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Main bacterial species causing clinical disease in ornamental freshwater fish in Brazil. Folia Microbiol (Praha) 2020; 66:231-239. [PMID: 33185813 DOI: 10.1007/s12223-020-00837-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Accepted: 11/05/2020] [Indexed: 10/23/2022]
Abstract
Bacterial diseases are common in ornamental fish, more frequently associated with ubiquitous bacteria from the aquarium environment. The disease can lead to fish mortality and cause high economic losses if not rapidly controlled. The aim of this study was to identify the main causative bacterial agents of infection in ornamental fish with different clinical signs. A total of 126 freshwater fish, from 12 families and 38 species, with clinical signs were collected in a wholesaler in São Paulo, SP, Brazil. Samples were taken from the eye, skin ulcers, kidneys, and gills, plated on MacConkey, CHROMagar Orientation, and blood agar and incubated under aerobic and anaerobic conditions. Bacterial identification was performed by MALDI-TOF mass spectrometry. From the 126 studied animals, 112 were positive for bacterial isolation. Among the positive animals, 32.1% presented infection caused by a single bacterial species, while in the remaining 67.9%, two to six different bacterial species were identified. A total of 259 bacterial strains were obtained and classified among 46 bacterial species. The species of higher frequency were Aeromonas veronii (26.3%), Aeromonas hydrophilla (16.2%), Shewanella putrefaciens (7.3%), Citrobacter freundii (8.1%), Vibrio albensis (5.8%), and Klebsiella pneumoniae (4.2%). MALDI-TOF MS showed to be a rapid method for diagnosis of bacterial disease outbreaks in ornamental fish establishments.
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Isolation, characterization, and efficacy of bacteriophages isolated against Citrobacter spp. an in vivo approach in a zebrafish model (Danio rerio). Res Microbiol 2020; 171:341-350. [PMID: 32919052 DOI: 10.1016/j.resmic.2020.08.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Revised: 08/27/2020] [Accepted: 08/28/2020] [Indexed: 12/14/2022]
Abstract
Citrobacter infections are becoming an increasingly significant health problem in aquaculture in South-Eastern countries. The objective of this study was to isolate and evaluate the potential of lytic bacteriophages against Citrobacter infections. TEM analysis revealed that the isolated phages Citrophage MRM19 and Citrophage MRM57 were identified to be Siphovirus and Podovirus family of the order Caudovirales. The phage life-cycle studies showed that Citrophage MRM19 had an adsorption time of 18 ± 1 min and a latency period of 25 ± 3 min with burst size of 110 ± 20 phages/infected cell and Citrophage MRM57 had an adsorption time of 15 ± 1 min and a latency period of 25 ± 2 min with burst size of 50 ± 5 phages/infected cell. In vitro studies indicated that the bacterial load was reduced by 5 and 7 log units within 12 h by Citrophage MRM19 and Citrophage MRM57. The in vivo efficacy of the phages was studied using zebrafish (Danio rerio) as a model organism in low-scale tanks. The study unveiled that the use of phages increased the survival up to 17%, 23%, and 26% in the case of Citrophage MRM19, Citrophage MRM57, and phage cocktail treatment, respectively. Our study indicated that bacteriophages are suitable biocontrol agents against Citrobacter spp. especially in aquaculture industry.
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20
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Elumalai P, Prakash P, Musthafa MS, Faggio C. Effect of alkoxy glycerol on growth performance, immune response and disease resistance in Nile Tilapia (Oreochromis niloticus). Res Vet Sci 2019; 123:298-304. [PMID: 30769237 DOI: 10.1016/j.rvsc.2019.01.006] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Revised: 12/08/2018] [Accepted: 01/07/2019] [Indexed: 12/23/2022]
Abstract
Fish oil and their compounds derived from the same have immense applications in the improvement of health, brain development, enhancing immunity etc. This study aimed at the supplementation of such a compound alkoxy glycerol derived from shark liver oil in fish diet and thereby analyzing growth as well as immune parameters of Oreochromis niloticus. 400 fishes were distributed into 11 glass tanks, and then fishes were weighed before starting the experiment. (Average weight was found to be 5.3 ± 0.10 g). Feed was prepared using alkoxy glycerol in the doses like 5, 10, 15 g kg-1 Fishes were fed with the prepared diet for 30 days and growth parameters like specific growth rate (SGR), weight gain (WG), final weight (FW), and feed conversion ratio (FCR) were measured. On the 30th day, fishes were challenged with 0.1 ml of normal saline solution containing 107 CFUml-1 of Aeromonas hydrophila and disease resistance was monitored. After 30 days of post challenge observation, immunological and lipid peroxidation assays like alternative complement (ACH50), phagocytosis (PI), respiratory burst activities (RB), and serum lysozyme (SL) were performed.
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Affiliation(s)
- Preetham Elumalai
- Department of Processing Technology (Biochemistry), Kerala University of Fisheries and Ocean Studies, Panangad, Kochi 682 506, Kerala, India; Centre of Excellence in Food Processing Technology, Kerala University of Fisheries and Ocean Studies (KUFOS), Panangad, Kochi 682 506, Kerala, India.
| | - Parvathy Prakash
- Centre of Excellence in Food Processing Technology, Kerala University of Fisheries and Ocean Studies (KUFOS), Panangad, Kochi 682 506, Kerala, India
| | | | - Caterina Faggio
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina-Viale Ferdinando Stagno d'Alcontres, 31, 98166 Messina, Italy
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21
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Bandeira Junior G, Dos Santos AC, Souza CDF, Baldissera MD, Moreira KLDS, da Veiga ML, da Rocha MIDUM, de Vargas APC, da Cunha MA, Baldisserotto B. Citrobacter freundii infection in silver catfish (Rhamdia quelen): Hematological and histological alterations. Microb Pathog 2018; 125:276-280. [PMID: 30266258 DOI: 10.1016/j.micpath.2018.09.038] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Revised: 09/21/2018] [Accepted: 09/24/2018] [Indexed: 01/08/2023]
Abstract
Citrobacter freundii is a fish pathogen known for its ability to cause injury and high mortality. There have been no studies reporting the effect of this bacterium on hematological parameters and internal organ histology in silver catfish (Rhamdia quelen). Therefore, the aim of this study is to evaluate the hematological and histopathological effects of an experimentally induced C. freundii infection in silver catfish. Twenty fish were divided into healthy and infected groups. The fish of the infected group were inoculated intramuscularly with 100 μL of bacterial suspension (6.4 × 108 CFU mL-1), while healthy control animals received 100 μL of sterile saline. On day 18 post-infection, blood and tissues (cephalic kidneys, livers, and spleens) were collected for histological analysis. The infected animals presented high mortality, as well as hematological and histological changes. In relation to hematology, the infected fish presented aregenerative anemia, protein loss, leukopenia with neutropenia, lymphocytosis, and leukoblastosis. Regarding histology, there was liver degeneration, decrease in the amount of renal hematopoietic tissue, and the presence of melanomacrophage centers (MMCs) in the spleen and cephalic kidney of infected fish. In summary, these alterations may contribute to disease pathophysiology, contributing to high mortality of affected fish.
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Affiliation(s)
- Guerino Bandeira Junior
- Department of Physiology and Pharmacology, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | | | - Carine de Freitas Souza
- Department of Physiology and Pharmacology, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | | | | | | | | | | | - Mauro Alves da Cunha
- Department of Physiology and Pharmacology, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - Bernardo Baldisserotto
- Department of Physiology and Pharmacology, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil.
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Humbert P, Vemmer M, Mävers F, Schumann M, Vidal S, Patel AV. Development of an attract-and-kill co-formulation containing Saccharomyces cerevisiae and neem extract attractive towards wireworms. PEST MANAGEMENT SCIENCE 2018; 74:1575-1585. [PMID: 29281183 DOI: 10.1002/ps.4842] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2017] [Revised: 12/12/2017] [Accepted: 12/18/2017] [Indexed: 06/07/2023]
Abstract
BACKGROUND Wireworms (Coleoptera: Elateridae) are major insect pests of worldwide relevance. Owing to the progressive phasing-out of chemical insecticides, there is great demand for innovative control options. This study reports on the development of an attract-and-kill co-formulation based on Ca-alginate beads, which release CO2 and contain neem extract as a bioinsecticidal compound. The objectives of this study were to discover: (1) whether neem extract can be immobilized efficiently, (2) whether CO2 -releasing Saccharomyces cerevisiae and neem extract are suitable for co-encapsulation, and (3) whether co-encapsulated neem extract affects the attractiveness of CO2 -releasing beads towards wireworms. RESULTS Neem extract was co-encapsulated together with S. cerevisiae, starch and amyloglucosidase with a high encapsulation efficiency of 98.6% (based on measurement of azadirachtin A as the main active ingredient). Even at enhanced concentrations, neem extract allowed growth of S. cerevisiae, and beads containing neem extract exhibited CO2 -emission comparable with beads without neem extract. When applied to the soil, the beads established a CO2 gradient of >15 cm. The co-formulation containing neem extract showed no repellent effects and was attractive for wireworms within the first 24 h after exposure. CONCLUSION Co-encapsulation of S. cerevisiae and neem extract is a promising approach for the development of attract-and-kill formulations for the control of wireworms. This study offers new options for the application of neem extracts in soil. © 2017 Society of Chemical Industry.
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Affiliation(s)
- Pascal Humbert
- Faculty of Engineering Sciences and Mathematics, Fermentation and Formulation of Biologicals and Chemicals, University of Applied Sciences Bielefeld, Bielefeld, Germany
| | - Marina Vemmer
- Faculty of Engineering Sciences and Mathematics, Fermentation and Formulation of Biologicals and Chemicals, University of Applied Sciences Bielefeld, Bielefeld, Germany
| | - Frauke Mävers
- Department for Crop Sciences, Agricultural Entomology, University of Göttingen, Göttingen, Germany
| | - Mario Schumann
- Department for Crop Sciences, Agricultural Entomology, University of Göttingen, Göttingen, Germany
| | - Stefan Vidal
- Department for Crop Sciences, Agricultural Entomology, University of Göttingen, Göttingen, Germany
| | - Anant V Patel
- Faculty of Engineering Sciences and Mathematics, Fermentation and Formulation of Biologicals and Chemicals, University of Applied Sciences Bielefeld, Bielefeld, Germany
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Thanigaivel S, Chandrasekaran N, Mukherjee A, John Thomas. Seaweeds as an alternative therapeutic source for aquatic disease management. AQUACULTURE 2016; 464:529-536. [DOI: 10.1016/j.aquaculture.2016.08.001] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2023]
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24
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Valladão GMR, Gallani SU, Ikefuti CV, da Cruz C, Levy-Pereira N, Rodrigues MVN, Pilarski F. Essential oils to control ichthyophthiriasis in pacu, Piaractus mesopotamicus (Holmberg): special emphasis on treatment with Melaleuca alternifolia. JOURNAL OF FISH DISEASES 2016; 39:1143-1152. [PMID: 26776242 DOI: 10.1111/jfd.12447] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Revised: 11/12/2015] [Accepted: 11/12/2015] [Indexed: 06/05/2023]
Abstract
In vitro effect of the Melaleuca alternifolia, Lavandula angustifolia and Mentha piperita essential oils (EOs) against Ichthyophthirius multifiliis and in vivo effect of M. alternifolia for treating ichthyophthiriasis in one of the most important South American fish, Piaractus mesopotamicus (Holmberg), were evaluated. The in vitro test consisted of three EOs, each at concentrations of 57 μL L(-1) , 114 μL L (-1) , 227 μL L(-1) and 455 μL L (-1) , which were assessed once an hour for 4 h in microtitre plates (96 wells). The in vitro results demonstrated that all tested EOs showed a cytotoxic effect against I. multifiliis compared to control groups (P < 0.05). The in vivo treatment for white spot disease was performed in a bath for 2 h day(-1) for 5 days using the M. alternifolia EO (50 μL L (-1) ). In this study, 53.33% of the fish severely infected by I. multifiliis survived after the treatment with M. alternifolia (50 μL L (-1) ) and the parasitological analysis has shown an efficacy of nearly 100% in the skin and gills, while all the fish in the control group died. Furthermore, the potential positive effect of M. alternifolia EO against two emergent opportunistic bacteria in South America Edwardsiella tarda and Citrobacter freundii was discussed.
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Affiliation(s)
- G M R Valladão
- Aquaculture Center, Universidade Estadual Paulista (CAUNESP), Jaboticabal, São Paulo, Brazil
| | - S U Gallani
- Aquaculture Center, Universidade Estadual Paulista (CAUNESP), Jaboticabal, São Paulo, Brazil
| | - C V Ikefuti
- Center for Environmental Studies and Research of Weed (NEPEAM), Universidade Estadual Paulista, Jaboticabal, São Paulo, Brazil
| | - C da Cruz
- Center for Environmental Studies and Research of Weed (NEPEAM), Universidade Estadual Paulista, Jaboticabal, São Paulo, Brazil
| | - N Levy-Pereira
- Aquaculture Center, Universidade Estadual Paulista (CAUNESP), Jaboticabal, São Paulo, Brazil
| | - M V N Rodrigues
- Laboratory of Organic and Pharmaceutical Chemistry, Multidisciplinary Center for Chemical, Biological and Agricultural Research (CPQBA), Universidade Estadual de Campinas, Campinas, São Paulo, Brazil
| | - F Pilarski
- Aquaculture Center, Universidade Estadual Paulista (CAUNESP), Jaboticabal, São Paulo, Brazil
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Pathogenesis of mixed infection by Spironucleus sp. and Citrobacter freundii in freshwater angelfish Pterophyllum scalare. Microb Pathog 2016; 100:119-123. [PMID: 27599811 DOI: 10.1016/j.micpath.2016.09.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Revised: 08/25/2016] [Accepted: 09/02/2016] [Indexed: 01/21/2023]
Abstract
The present study was carried out to identify and describe the pathology of the freshwater angelfish Pterophyllum scalare during chronic mortality in an in-door aquaculture system. Scraping of the integument and gills and the collection of intestinal contents to search for external and internal parasites were performed. Kidneys were collected aseptically for the microbiological analysis and the isolates were subjected to antibiotics to test for susceptibility. Subsequently, necropsy for macroscopic assessment and collection of internal organs for histopathology were performed. The fish exhibited lethargy, lip tumor, hemorrhage and liver granuloma. No ectoparasites were diagnosed. Endoparasites of the genus Spironucleus were found in large numbers in the intestine of the affected fish. In the microbiological analysis, Citrobacter freundii was isolated from the kidney and identified by colony PCR. This bacterium showed susceptibility to three of the eight antibiotics evaluated: ciprofloxacin, cefoxitin and tetracycline. For the pathological analysis, liver and spleen granulomas were present. In the intestinal tissue, a large and unusual amount of mast cells and their free granules were described and discussed in detail. The present study showed that mast cells play an important role during the chronic infection of freshwater angelfish.
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Ullah N, Parveen A, Bano R, Zulfiqar I, Maryam M, Jabeen S, Liaqat A, Ahmad S. In vitro and in vivo protocols of antimicrobial bioassay of medicinal herbal extracts: A review. ASIAN PACIFIC JOURNAL OF TROPICAL DISEASE 2016. [DOI: 10.1016/s2222-1808(16)61106-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Pérez MJ, Falqué E, Domínguez H. Antimicrobial Action of Compounds from Marine Seaweed. Mar Drugs 2016; 14:E52. [PMID: 27005637 PMCID: PMC4820306 DOI: 10.3390/md14030052] [Citation(s) in RCA: 224] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Revised: 01/18/2016] [Accepted: 02/25/2016] [Indexed: 12/12/2022] Open
Abstract
Seaweed produces metabolites aiding in the protection against different environmental stresses. These compounds show antiviral, antiprotozoal, antifungal, and antibacterial properties. Macroalgae can be cultured in high volumes and would represent an attractive source of potential compounds useful for unconventional drugs able to control new diseases or multiresistant strains of pathogenic microorganisms. The substances isolated from green, brown and red algae showing potent antimicrobial activity belong to polysaccharides, fatty acids, phlorotannins, pigments, lectins, alkaloids, terpenoids and halogenated compounds. This review presents the major compounds found in macroalga showing antimicrobial activities and their most promising applications.
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Affiliation(s)
- María José Pérez
- Departamento de Biología Funcional y Ciencias de la Salud, Facultad de Ciencias, Universidade de Vigo, As Lagoas, Ourense 32004, Spain.
| | - Elena Falqué
- Departamento de Química Analítica, Facultad de Ciencias, Universidade de Vigo, As Lagoas, Ourense 32004, Spain.
| | - Herminia Domínguez
- Departamento de Enxeñería Química, Facultad de Ciencias. Universidade de Vigo, As Lagoas, Ourense 32004, Spain.
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Murussi CR, Costa MD, Leitemperger JW, Flores-Lopes F, Menezes CC, Loebens L, de Avila LA, Rizzetti TM, Adaime MB, Zanella R, Loro VL. Acute exposure to the biopesticide azadirachtin affects parameters in the gills of common carp (Cyprinus carpio). Comp Biochem Physiol C Toxicol Pharmacol 2016; 180:49-55. [PMID: 26689640 DOI: 10.1016/j.cbpc.2015.12.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Revised: 11/25/2015] [Accepted: 12/07/2015] [Indexed: 01/29/2023]
Abstract
The biopesticide, azadirachtin (Aza) is less hazardous to the environment, but may cause several toxic effects in aquatic organisms. The Cyprinus carpio (n=12, for all concentrations) after 10days of acclimation under controlled conditions, were exposed at 20, 40, and 60μL/L of Aza during 96h. After this period, fish were anesthetized and euthanized then mucus layer and gills collected. In this study, the effects of exposure to different Aza concentrations were analysed through a set of biomarkers: Na(+)/K(+-)ATPase, lipid peroxidation (TBARS), protein carbonyl (PC), superoxide dismutase (SOD), glutathione-S-transferase (GST), catalase (CAT), glutathione peroxidase (GPx), non-protein thiols (NPSH), ascorbic acid (AsA) and histological parameters and, yet, protein and glucose concentration in the surface area of mucous layer. Na(+)K(+-)ATPase was inhibited at 40 and 60μL/L compared to control. TBARS decreased at 40μL/L compared to control. PC, SOD and GST increased at 60μL/L in comparison to control. CAT increased at 20 and 60μL/L, and GPx increased in all Aza concentrations compared to control. NPSH decreased and AsA increased in all concentrations in comparison to control. Histological analyses demonstrated an increase in the intensity of the damage with increasing Aza concentration. Alterations in histological examination were elevation and hypertrophy of the epithelial cells of the secondary filament, hypertrophy and hyperplasia of the mucous and chlorate cells and lamellar aneurism. Glucose and protein concentrations in mucus layer increased at 60μL/L compared to control. In general, we suggest that 60μL/L Aza concentration affected several parameters causing disruptions carp metabolism.
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Affiliation(s)
- Camila R Murussi
- Programa de Pós-graduação em Bioquímica Toxicológica, Departamento de Bioquímica e Biologia Molecular, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - Maiara D Costa
- Programa de Pós-graduação em Bioquímica Toxicológica, Departamento de Bioquímica e Biologia Molecular, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - Jossiele W Leitemperger
- Programa de Pós-graduação em Bioquímica Toxicológica, Departamento de Bioquímica e Biologia Molecular, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - Fábio Flores-Lopes
- Departamento de Ciências Biológicas, Universidade Estadual de Santa Cruz, Ilhéus, BA, Brazil
| | - Charlene C Menezes
- Programa de Pós-graduação em Biodiversidade Animal, Departamento de Bioquímica e Biologia Molecular, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - Luisa Loebens
- Programa de Pós-graduação em Biodiversidade Animal, Departamento de Bioquímica e Biologia Molecular, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - Luis Antonio de Avila
- Programa de Pós-Graduação em Fitossanidade, Faculdade de Agronomia Eliseu Maciel, Universidade Federal de Pelotas, Pelotas, RS, Brazil
| | - Tiele M Rizzetti
- Laboratório de Análises de Resíduos de Pesticidas, Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - Martha B Adaime
- Laboratório de Análises de Resíduos de Pesticidas, Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - Renato Zanella
- Laboratório de Análises de Resíduos de Pesticidas, Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - Vania L Loro
- Programa de Pós-graduação em Bioquímica Toxicológica, Departamento de Bioquímica e Biologia Molecular, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil; Programa de Pós-graduação em Biodiversidade Animal, Departamento de Bioquímica e Biologia Molecular, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil.
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Kongchum P, Chimtong S, Chareansak N, Subprasert P. Effect of Green Tea Extract on Vibrio Parahaemolyticus Inhibition in Pacific White Shrimp (Litopenaeus Vannamei) Postlarvae. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.aaspro.2016.12.020] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Thanigaivel S, Chandrasekaran N, Mukherjee A, Thomas J. Investigation of seaweed extracts as a source of treatment against bacterial fish pathogen. AQUACULTURE 2015; 448:82-86. [DOI: 10.1016/j.aquaculture.2015.05.039] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2023]
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Ngugi CC, Oyoo-Okoth E, Mugo-Bundi J, Orina PS, Chemoiwa EJ, Aloo PA. Effects of dietary administration of stinging nettle (Urtica dioica) on the growth performance, biochemical, hematological and immunological parameters in juvenile and adult Victoria Labeo (Labeo victorianus) challenged with Aeromonas hydrophila. FISH & SHELLFISH IMMUNOLOGY 2015; 44:533-541. [PMID: 25827627 DOI: 10.1016/j.fsi.2015.03.025] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2015] [Revised: 03/16/2015] [Accepted: 03/18/2015] [Indexed: 06/04/2023]
Abstract
We investigated effects of dietary administration of stinging nettle (Urtica dioica) on growth performance, biochemical, hematological and immunological parameters in juvenile and adult Victoria Labeo (Labeo victorianus) against Aeromonas hydrophila. Fish were divided into 4 groups and fed for 4 and 16 weeks with 0%, 1%, 2% and 5% of U. dioica incorporated into the diet. Use of U. dioica in the diet resulted in improved biochemical, hematological and immunological parameters. Among the biochemical parameters; plasma cortisol, glucose, triglyceride and cholesterol decreased while total protein and albumin in fish increased with increasing dietary inclusion of U. dioica. Among the haematology parameters: red blood cell (RBC), white blood cell (WBC) counts, haematocrit (Htc), mean cell haemoglobin (MCH), mean cell haemoglobin concentration (MCHC) and netrophiles increased with increasing dietary inclusion levels of U. dioica, some depending on the fish age. Serum immunoglobulins, lysozyme activity and respiratory burst were the main immunological parameters in the adult and juvenile L. victorianus measured and they all increased with increasing herbal inclusion of U. dioica in the diet. Dietary incorporation of U. dioica at 5% showed significantly higher relative percentage survival (up to 95%) against A. hydrophila. The current results demonstrate that using U. dioica can stimulate fish immunity and make L. victorianus more resistant to bacterial infection (A. hydrophila).
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Affiliation(s)
- Charles C Ngugi
- Kenyatta University, School of Agriculture and Enterprise Development, Department of Agricultural Resource Management, P.O. Box 43844-00100, Nairobi, Kenya
| | - Elijah Oyoo-Okoth
- School of Natural Resources and Environmental Studies, Department of Natural Resource, Karatina University, P.O. Box 1957-10101, Karatina, Kenya.
| | - James Mugo-Bundi
- School of Natural Resources and Environmental Studies, Department of Natural Resource, Karatina University, P.O. Box 1957-10101, Karatina, Kenya
| | - Paul Sagwe Orina
- National Aquaculture Research Development and Training Centre - Sagana, P. O. Box 26-10230, Sagana, Kenya; Department of Biological Sciences, University of Eldoret, P.O. Box 1125-30100, Eldoret, Kenya
| | - Emily Jepyegon Chemoiwa
- Department of Biological Sciences, University of Eldoret, P.O. Box 1125-30100, Eldoret, Kenya
| | - Peninah A Aloo
- School of Natural Resources and Environmental Studies, Department of Natural Resource, Karatina University, P.O. Box 1957-10101, Karatina, Kenya
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