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Bansal R, Torres M, Hunt M, Wang N, Chatzopoulou M, Manchanda M, Taddeo EP, Shu C, Shirihai OS, Bachar-Wikstrom E, Wikstrom JD. Role of the mitochondrial protein cyclophilin D in skin wound healing and collagen secretion. JCI Insight 2024; 9:e169213. [PMID: 38564292 PMCID: PMC11141914 DOI: 10.1172/jci.insight.169213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Accepted: 03/27/2024] [Indexed: 04/04/2024] Open
Abstract
Central for wound healing is the formation of granulation tissue, which largely consists of collagen and whose importance stretches past wound healing, including being implicated in both fibrosis and skin aging. Cyclophilin D (CyD) is a mitochondrial protein that regulates the permeability transition pore, known for its role in apoptosis and ischemia-reperfusion. To date, the role of CyD in human wound healing and collagen generation has been largely unexplored. Here, we show that CyD was upregulated in normal wounds and venous ulcers, likely adaptive as CyD inhibition impaired reepithelialization, granulation tissue formation, and wound closure in both human and pig models. Overexpression of CyD increased keratinocyte migration and fibroblast proliferation, while its inhibition reduced migration. Independent of wound healing, CyD inhibition in fibroblasts reduced collagen secretion and caused endoplasmic reticulum collagen accumulation, while its overexpression increased collagen secretion. This was confirmed in a Ppif-KO mouse model, which showed a reduction in skin collagen. Overall, this study revealed previously unreported roles of CyD in skin, with implications for wound healing and beyond.
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Affiliation(s)
- Ritu Bansal
- Dermatology and Venereology Division, Department of Medicine (Solna), Karolinska Institutet, Stockholm, Sweden
| | - Monica Torres
- Dermatology and Venereology Division, Department of Medicine (Solna), Karolinska Institutet, Stockholm, Sweden
- Dermato-Venereology Clinic, Karolinska University Hospital, Stockholm, Sweden
| | - Matthew Hunt
- Dermatology and Venereology Division, Department of Medicine (Solna), Karolinska Institutet, Stockholm, Sweden
| | - Nuoqi Wang
- Dermatology and Venereology Division, Department of Medicine (Solna), Karolinska Institutet, Stockholm, Sweden
| | - Margarita Chatzopoulou
- Dermatology and Venereology Division, Department of Medicine (Solna), Karolinska Institutet, Stockholm, Sweden
| | - Mansi Manchanda
- Dermatology and Venereology Division, Department of Medicine (Solna), Karolinska Institutet, Stockholm, Sweden
| | - Evan P. Taddeo
- Metabolism Theme
- Department of Molecular and Medical Pharmacology, and
- Department of Medicine, Division of Endocrinology, David Geffen School of Medicine, UCLA, Los Angeles, California, USA
| | - Cynthia Shu
- Metabolism Theme
- Department of Molecular and Medical Pharmacology, and
- Department of Medicine, Division of Endocrinology, David Geffen School of Medicine, UCLA, Los Angeles, California, USA
| | - Orian S. Shirihai
- Metabolism Theme
- Department of Molecular and Medical Pharmacology, and
- Department of Medicine, Division of Endocrinology, David Geffen School of Medicine, UCLA, Los Angeles, California, USA
| | - Etty Bachar-Wikstrom
- Dermatology and Venereology Division, Department of Medicine (Solna), Karolinska Institutet, Stockholm, Sweden
| | - Jakob D. Wikstrom
- Dermatology and Venereology Division, Department of Medicine (Solna), Karolinska Institutet, Stockholm, Sweden
- Dermato-Venereology Clinic, Karolinska University Hospital, Stockholm, Sweden
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Yang YS, Chen HJ, Chen XC, Tang HJ, Chang FJ, Huang YL, Pan YL, Kesavan DK, Chen HY, Shang HS, Kuo SC, Chen TL, Chiang MH. Elizabethkingia anophelis outer membrane vesicles as a novel vaccine candidate against infection: insights into immune response and potential for passive immunity. mSphere 2023; 8:e0040023. [PMID: 38014949 PMCID: PMC10732079 DOI: 10.1128/msphere.00400-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Accepted: 10/13/2023] [Indexed: 11/29/2023] Open
Abstract
IMPORTANCE Elizabethkingia anophelis, a Gram-negative pathogen, causes infections such as bacteraemia, pneumonia, and neonatal meningitis. The pathogen resists most antimicrobial classes, making novel approaches urgently needed. In natural settings, Gram-negative bacteria secrete outer membrane vesicles (OMVs) that carry important molecules in the bacterial life cycle. These OMVs are enriched with proteins involved in virulence, survival, and carbohydrate metabolism, making them a promising source for vaccine development against the pathogen. This study investigated the efficacy of imipenem-induced OMVs (iOMVs) as a vaccine candidate against E. anophelis infection in a mouse pneumonia model. Mice immunized with iOMVs were completely protected during lethal-dose challenges. Passive immunization with hyperimmune sera and splenocytes conferred protection against lethal pneumonia. Further investigation is needed to understand the mechanisms underlying the protective effects of iOMV-induced passive immunity, such as the action on specific antibody subclasses or T cell subsets.
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Grants
- 109-2320-B-016-002-MY2, 110-2320-B-016-014, 111-2320-B-016-015, 112-2314-B-016-023, 112-2314-B-016-039, 112-2314-B-016-024-MY2 Ministry of Science and Technology, Taiwan (MOST)
- TSGH-E-111244, TSGH-E-112253 Tri-Service General Hospital (TSGH)
- CMNDMC11108, CMNDMC11206 Chi Mei Medical Center
- MND-MAB-110-049, MND-MAB-D-111072, MND-MAB-D-112115, MND-MAB-D-113078 MOD | Medical Affairs Bureau (MAB)
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Affiliation(s)
- Ya-Sung Yang
- Department of Internal Medicine, Division of Infectious Diseases and Tropical Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
| | - Hung-Jui Chen
- Department of Infectious Diseases, Chi Mei Medical Center, Tainan, Taiwan
| | - Xiao-Chun Chen
- Department and Graduate institute of Microbiology and Immunology, National Defense Medical Center, Taipei, Taiwan
| | - Hung-Jen Tang
- Department of Infectious Diseases, Chi Mei Medical Center, Tainan, Taiwan
| | - Fang-Ju Chang
- Department and Graduate Institute of Biology and Anatomy, National Defense Medical Center, Taipei, Taiwan
| | - Yun-Ling Huang
- Department and Graduate Institute of Biology and Anatomy, National Defense Medical Center, Taipei, Taiwan
| | - Yu-Ling Pan
- Department and Graduate Institute of Biology and Anatomy, National Defense Medical Center, Taipei, Taiwan
| | - Dinesh Kumar Kesavan
- School of Material Science, Nanyang Technological University, Singapore, Singapore
| | - Huan-Yuan Chen
- Inflammation Core Facility, Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Hung-Sheng Shang
- Department of Pathology, Division of Clinical Pathology, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
| | - Shu-Chen Kuo
- National Institute of Infectious Diseases and Vaccinology, National Health Research Institutes, Zhunan, Taiwan
| | - Te-Li Chen
- Graduate Institute of Life Sciences, National Defense Medical Center, Taipei, Taiwan
| | - Ming-Hsien Chiang
- Department and Graduate Institute of Biology and Anatomy, National Defense Medical Center, Taipei, Taiwan
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Tsukada E, Rodrigues CC, Jacintho JC, Franco-Belussi L, Jones-Costa M, Abdalla FC, Rocha TL, Salla RF. The amphibian's spleen as a source of biomarkers for ecotoxicity assessment: Historical review and trends. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 901:165915. [PMID: 37532037 DOI: 10.1016/j.scitotenv.2023.165915] [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] [Revised: 07/27/2023] [Accepted: 07/28/2023] [Indexed: 08/04/2023]
Abstract
Amphibians are very sensitive to many environmental changes, so these animals are considered good bioindicator models for ecotoxicology. Given the importance of the amphibian spleen for hematopoietic and immune responses, this can be a key organ for the evaluation of biomarkers to monitor the health of individuals in nature or in captivity. In this systematic review, we searched databases and summarized the main findings concerning the amphibian spleen as a source of possible biomarkers applied in different scientific fields. The searches resulted in 83 articles published from 1923 to 2022, which applied the use of splenic samples to evaluate the effects of distinct stressors on amphibians. Articles were distributed in more than twenty countries, with USA, Europe, and Brazil, standing out among them. Publications focused mainly on anatomical and histomorphological characterization of the spleen, its physiology, and development. Recently, the use of splenic biomarkers in pathology and ecotoxicology began to grow but many gaps still need to be addressed in herpetological research. About 85 % of the splenic biomarkers showed responses to various stressors, which indicates that the spleen can provide numerous biomarkers to be used in many study fields. The limited amount of information on morphological description and splenic anatomy in amphibians may be a contributing factor to the underestimated use of splenic biomarkers in herpetological research around the world. We hope that this unprecedented review can instigate researchers to refine herpetological experimentation, using the spleen as a versatile and alternative source for biomarkers in ecotoxicology.
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Affiliation(s)
- Elisabete Tsukada
- Post-graduation Program of Biotechnology and Environmental Monitoring, Federal University of São Carlos (UFSCar), campus Sorocaba, Sorocaba, São Paulo, Brazil
| | - Cândido C Rodrigues
- Laboratory of Environmental Biotechnology and Ecotoxicology, Institute of Tropical Pathology and Public Health, Federal University of Goiás, Goiânia, Brazil
| | - Jaqueline C Jacintho
- Laboratory of Environmental Biotechnology and Ecotoxicology, Institute of Tropical Pathology and Public Health, Federal University of Goiás, Goiânia, Brazil
| | - Lilian Franco-Belussi
- Departament of Biological Sciences, São Paulo State University, campus São José do Rio Preto, São Paulo, Brazil; Laboratory of Experimental Pathology (LAPex), Federal University of Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul, Brazil
| | - Monica Jones-Costa
- Department of Biology, Federal University of São Carlos (UFSCar), campus Sorocaba, Sorocaba, São Paulo, Brazil
| | - Fábio Camargo Abdalla
- Post-graduation Program of Biotechnology and Environmental Monitoring, Federal University of São Carlos (UFSCar), campus Sorocaba, Sorocaba, São Paulo, Brazil; Laboratory of Structural and Functional Biology, Federal University of São Carlos (UFSCar), campus Sorocaba, Sorocaba, São Paulo, Brazil
| | - Thiago Lopes Rocha
- Laboratory of Environmental Biotechnology and Ecotoxicology, Institute of Tropical Pathology and Public Health, Federal University of Goiás, Goiânia, Brazil
| | - Raquel F Salla
- Post-graduation Program of Biotechnology and Environmental Monitoring, Federal University of São Carlos (UFSCar), campus Sorocaba, Sorocaba, São Paulo, Brazil; Laboratory of Environmental Biotechnology and Ecotoxicology, Institute of Tropical Pathology and Public Health, Federal University of Goiás, Goiânia, Brazil.
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Li F, Chen B, Xu M, Feng Y, Deng Y, Huang X, Geng Y, Ouyang P, Chen D. Immune Activation and Inflammatory Response Mediated by the NOD/Toll-like Receptor Signaling Pathway-The Potential Mechanism of Bullfrog ( Lithobates catesbeiana) Meningitis Caused by Elizabethkingia miricola. Int J Mol Sci 2023; 24:14554. [PMID: 37833994 PMCID: PMC10572524 DOI: 10.3390/ijms241914554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 09/09/2023] [Accepted: 09/12/2023] [Indexed: 10/15/2023] Open
Abstract
Elizabethkingia miricola is an emerging opportunistic pathogen that is highly pathogenic in both immunocompromised humans and animals. Once the disease occurs, treatment can be very difficult. Therefore, a deep understanding of the pathological mechanism of Elizabethkingia miricola is the key to the prevention and control of the disease. In this study, we isolated the pathogenic bacteria from bullfrogs with dark skin color, weak limbs, wryneck, and cataracts. Via subsequent morphological observations and a 16S rRNA gene sequence analysis, the pathogen was identified as Elizabethkingia miricola. The histopathological and transmission electron microscopy analysis revealed that the brain was the main target organ. Therefore, brain samples from diseased and healthy bullfrogs were used for the RNA-Seq analysis. The comparative transcriptome analysis revealed that the diseased bullfrog brain was characterized by the immune activation and inflammatory response, which were mediated by the "NOD-like receptor signaling pathway" and the "Toll-like receptor signaling pathway". We also performed qRT-PCR to examine the expression profile of inflammation-related genes, which further verified the reliability of our transcriptome data. Based on the above results, it was concluded that the NOD/Toll-like receptor-related networks that dominate the immune activation and inflammatory response were activated in the brain of Elizabethkingia miricola-infected bullfrogs. This study contributes to the search for therapeutic targets for bullfrog meningitis and provides basic information for establishing effective measures to prevent and control bullfrog meningitis.
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Affiliation(s)
- Fulong Li
- Department of Aquaculture, College of Animal Science & Technology, Sichuan Agricultural University, Chengdu 611130, China; (F.L.); (B.C.); (M.X.); (D.C.)
| | - Baipeng Chen
- Department of Aquaculture, College of Animal Science & Technology, Sichuan Agricultural University, Chengdu 611130, China; (F.L.); (B.C.); (M.X.); (D.C.)
| | - Ming Xu
- Department of Aquaculture, College of Animal Science & Technology, Sichuan Agricultural University, Chengdu 611130, China; (F.L.); (B.C.); (M.X.); (D.C.)
| | - Yang Feng
- Department of Basic Veterinary, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (Y.F.); (Y.G.); (P.O.)
| | - Yongqiang Deng
- Fisheries Institute, Sichuan Academy of Agricultural Sciences, Chengdu 611731, China;
| | - Xiaoli Huang
- Department of Aquaculture, College of Animal Science & Technology, Sichuan Agricultural University, Chengdu 611130, China; (F.L.); (B.C.); (M.X.); (D.C.)
| | - Yi Geng
- Department of Basic Veterinary, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (Y.F.); (Y.G.); (P.O.)
| | - Ping Ouyang
- Department of Basic Veterinary, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (Y.F.); (Y.G.); (P.O.)
| | - Defang Chen
- Department of Aquaculture, College of Animal Science & Technology, Sichuan Agricultural University, Chengdu 611130, China; (F.L.); (B.C.); (M.X.); (D.C.)
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Dean K, Coaster N, Young K, Mitchell J. Development and application of a dose-response model for Elizabethkingia spp. RISK ANALYSIS : AN OFFICIAL PUBLICATION OF THE SOCIETY FOR RISK ANALYSIS 2023; 43:1496-1507. [PMID: 36161308 DOI: 10.1111/risa.14013] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Elizabethkingia spp. are common environmental pathogens responsible for infections in more vulnerable populations. Although the exposure routes of concern are not well understood, some hospital-associated outbreaks have indicated possible waterborne transmission. In order to facilitate quantitative microbial risk assessment (QMRA) for Elizabethkingia spp., this study fit dose-response models to frog and mice datasets that evaluated intramuscular and intraperitoneal exposure to Elizabethkingia spp. The frog datasets could be pooled, and the exact beta-Poisson model was the best fitting model with optimized parameters α = 0.52 and β = 86,351. Using the exact beta-Poisson model, the dose of Elizabethkingia miricola resulting in a 50% morbidity response (LD50) was estimated to be approximately 237,000 CFU. The model developed herein was used to estimate the probability of infection for a hospital patient under a modeled exposure scenario involving a contaminated medical device and reported Elizabethkingia spp. concentrations isolated from hospital sinks after an outbreak. The median exposure dose was approximately 3 CFU/insertion event, and the corresponding median risk of infection was 3.4E-05. The median risk estimated in this case study was lower than the 3% attack rate observed in a previous outbreak, however, there are noted gaps pertaining to the possible concentrations of Elizabethkingia spp. in tap water and the most likely exposure routes. This is the first dose-response model developed for Elizabethkingia spp. thus enabling future risk assessments to help determine levels of risk and potential effective risk management strategies.
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Affiliation(s)
- Kara Dean
- Department of Biosystems and Agricultural Engineering, Michigan State University, East Lansing, Michigan, USA
| | - Natalie Coaster
- Department of Biosystems and Agricultural Engineering, Michigan State University, East Lansing, Michigan, USA
| | - Kyana Young
- Department of Engineering, Wake Forest University, Winston-Salem, North Carolina, USA
| | - Jade Mitchell
- Department of Biosystems and Agricultural Engineering, Michigan State University, East Lansing, Michigan, USA
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Liu F, Hou J, Yu F, Gu Z, Hu R. Identification and pathogenicity of multidrug-resistant Elizabethkingia miricola isolated from farmed American bullfrogs Rana catesbeiana in China with in vitro screening of herbal antimicrobial agents. JOURNAL OF AQUATIC ANIMAL HEALTH 2023; 35:117-127. [PMID: 37334434 DOI: 10.1002/aah.10185] [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: 11/11/2022] [Revised: 02/20/2023] [Accepted: 03/07/2023] [Indexed: 06/20/2023]
Abstract
OBJECTIVE In 2021, an outbreak of an infectious disease characterized by torticollis, cataracts, and neurological disorders caused massive mortality in farmed American bullfrogs Rana catesbeiana in Hubei province, China. We identified the causal agent in this outbreak, characterized its pathogenicity, and screened candidate antimicrobial agents for future disease control. METHODS Bacterium was isolated from the diseased American bullfrogs and identified based on biochemical tests, sequence analyses (16S ribosomal RNA; DNA gyrase subunit B), and experimental challenge. Furthermore, antibiotic sensitivity of the isolated strain was detected with Kirby-Bauer paper diffusion method, and the antibacterial activity of 60 traditional Chinese herbal extracts against the isolated strain was evaluated by agar disc diffusion and broth dilution assays. RESULT We identified Elizabathkingia miricola strain FB210601 as the causative agent of this disease. The isolated E. miricola strain FB210601 exhibited extensive antibiotic resistance to all tested quinolones, β-lactam antibiotics, and aminoglycosides. Eight herbal extracts exhibited excellent antimicrobial activity against E. miricola FB210601, especially Caesalpinia sappan and Rhus chinensis, with minimal inhibitory concentrations less than 0.2 mg/mL. Additionally, the combined effects of two-component herbal mixtures containing C. sappan or R. chinensis were greater than those of the individual extracts. CONCLUSION Our results provide a reference for understanding the pathogenesis of Elizabethkingia infection in frogs. Furthermore, this study will aid in the application of herbal extracts for protection against infections caused by multidrug-resistant Elizabathkingia in the future.
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Affiliation(s)
- Fangyuan Liu
- College of Fisheries/Shuangshui Shuanglü Institute, Huazhong Agricultural University, Wuhan, China
- Hubei Engineering Technology Research Center for Aquatic Animal Diseases Control and Prevention, Wuhan, China
- National Aquatic Animal Diseases Para-reference Laboratory, Huazhong Agricultural University, Wuhan, China
| | - Jiahao Hou
- College of Fisheries/Shuangshui Shuanglü Institute, Huazhong Agricultural University, Wuhan, China
- Hubei Engineering Technology Research Center for Aquatic Animal Diseases Control and Prevention, Wuhan, China
| | - Fang Yu
- College of Fisheries/Shuangshui Shuanglü Institute, Huazhong Agricultural University, Wuhan, China
- Hubei Engineering Technology Research Center for Aquatic Animal Diseases Control and Prevention, Wuhan, China
- National Aquatic Animal Diseases Para-reference Laboratory, Huazhong Agricultural University, Wuhan, China
| | - Zemao Gu
- College of Fisheries/Shuangshui Shuanglü Institute, Huazhong Agricultural University, Wuhan, China
- Hubei Engineering Technology Research Center for Aquatic Animal Diseases Control and Prevention, Wuhan, China
- National Aquatic Animal Diseases Para-reference Laboratory, Huazhong Agricultural University, Wuhan, China
- Hubei Hongshan Laboratory, Wuhan, China
| | - Ruixue Hu
- College of Fisheries/Shuangshui Shuanglü Institute, Huazhong Agricultural University, Wuhan, China
- Hubei Engineering Technology Research Center for Aquatic Animal Diseases Control and Prevention, Wuhan, China
- National Aquatic Animal Diseases Para-reference Laboratory, Huazhong Agricultural University, Wuhan, China
- Hubei Hongshan Laboratory, Wuhan, China
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Wei D, Cheng Y, Xiao S, Liao W, Yu Q, Han S, Huang S, Shi J, Xie Z, Li P. Natural occurrences and characterization of Elizabethkingia miricola infection in cultured bullfrogs (Rana catesbeiana). Front Cell Infect Microbiol 2023; 13:1094050. [PMID: 36998635 PMCID: PMC10043317 DOI: 10.3389/fcimb.2023.1094050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Accepted: 02/20/2023] [Indexed: 03/16/2023] Open
Abstract
IntroductionThe bacterium Elizabethkingia miricola is a multispecies pathogen associated with meningitis-like disease that has been isolated from several amphibian species, including the bullfrog, but this is the first isolation in Guangxi. In the present study, the dominant bacteria were isolated from the brains of five bullfrogs with meningitis-like disease on a South China farm in Guangxi.MethodsThe NFEM01 isolate was identified by Gram staining; morphological observations; 16S rRNA, rpoB, and mutT-based phylogenetic tree analysis; and physiochemical characterization and was subjected to drug sensitivity and artificial infection testing.Results and discussionAs a result of identification, the NFEM01 strain was found to be E. miricola. An artificial infection experiment revealed that NFEM01 infected bullfrogs and could cause symptoms of typical meningitis-like disease. As a result of the bacterial drug sensitivity test, NFEM01 is highly sensitive to mequindox, rifampicin, enrofloxacin, nitrofural, and oxytetracycline and there was strong resistance to gentamicin, florfenicol, neomycin, penicillin, amoxicillin, doxycycline, and sulfamonomethoxine. This study provides a reference to further study the pathogenesis mechanism of E. miricola-induced bullfrog meningitislike disease and its prevention and treatment.
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Affiliation(s)
- Dongdong Wei
- Guangxi Key Laboratory of Aquatic Biotechnology and Modern Ecological Aquaculture, Guangxi Engineering Research Center for Fishery Major Diseases Control and Efficient Healthy Breeding Industrial Technology (GERCFT), Guangxi Academy of Sciences, Nanning, China
- China-ASEAN Modern Fishery Industry Technology Transfer Demonstration Center, Beibu Gulf Marine Industrial Research Institute, Guangxi Academy of Marine Sciences, Nanning, China
| | - Yuan Cheng
- Guangxi Key Laboratory of Aquatic Biotechnology and Modern Ecological Aquaculture, Guangxi Engineering Research Center for Fishery Major Diseases Control and Efficient Healthy Breeding Industrial Technology (GERCFT), Guangxi Academy of Sciences, Nanning, China
- China-ASEAN Modern Fishery Industry Technology Transfer Demonstration Center, Beibu Gulf Marine Industrial Research Institute, Guangxi Academy of Marine Sciences, Nanning, China
| | - Shuangyan Xiao
- Guangxi Key Laboratory of Aquatic Biotechnology and Modern Ecological Aquaculture, Guangxi Engineering Research Center for Fishery Major Diseases Control and Efficient Healthy Breeding Industrial Technology (GERCFT), Guangxi Academy of Sciences, Nanning, China
- China-ASEAN Modern Fishery Industry Technology Transfer Demonstration Center, Beibu Gulf Marine Industrial Research Institute, Guangxi Academy of Marine Sciences, Nanning, China
| | - Wenyu Liao
- Guangxi Key Laboratory of Aquatic Biotechnology and Modern Ecological Aquaculture, Guangxi Engineering Research Center for Fishery Major Diseases Control and Efficient Healthy Breeding Industrial Technology (GERCFT), Guangxi Academy of Sciences, Nanning, China
| | - Qing Yu
- Guangxi Key Laboratory of Aquatic Biotechnology and Modern Ecological Aquaculture, Guangxi Engineering Research Center for Fishery Major Diseases Control and Efficient Healthy Breeding Industrial Technology (GERCFT), Guangxi Academy of Sciences, Nanning, China
- China-ASEAN Modern Fishery Industry Technology Transfer Demonstration Center, Beibu Gulf Marine Industrial Research Institute, Guangxi Academy of Marine Sciences, Nanning, China
| | - Shuyu Han
- Guangxi Fisheries Technology Extension Station, Nanning, China
| | - Shuaishuai Huang
- Guangxi Key Laboratory of Aquatic Biotechnology and Modern Ecological Aquaculture, Guangxi Engineering Research Center for Fishery Major Diseases Control and Efficient Healthy Breeding Industrial Technology (GERCFT), Guangxi Academy of Sciences, Nanning, China
| | - Jingu Shi
- Guangxi Fisheries Technology Extension Station, Nanning, China
| | - Zongsheng Xie
- Guangxi Academy of Fishery Science, Nanning, China
- *Correspondence: Zongsheng Xie, ; Pengfei Li,
| | - Pengfei Li
- Guangxi Key Laboratory of Aquatic Biotechnology and Modern Ecological Aquaculture, Guangxi Engineering Research Center for Fishery Major Diseases Control and Efficient Healthy Breeding Industrial Technology (GERCFT), Guangxi Academy of Sciences, Nanning, China
- China-ASEAN Modern Fishery Industry Technology Transfer Demonstration Center, Beibu Gulf Marine Industrial Research Institute, Guangxi Academy of Marine Sciences, Nanning, China
- *Correspondence: Zongsheng Xie, ; Pengfei Li,
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Qiao M, Zhang L, Chang J, Li H, Li J, Wang W, Yuan G, Su J. Rapid and sensitive detection of pathogenic Elizabethkingia miricola in black spotted frog by RPA-LFD and fluorescent probe-based RPA. FISH AND SHELLFISH IMMUNOLOGY REPORTS 2022; 3:100059. [PMID: 36419595 PMCID: PMC9680066 DOI: 10.1016/j.fsirep.2022.100059] [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: 05/25/2022] [Revised: 06/21/2022] [Accepted: 06/22/2022] [Indexed: 12/03/2022] Open
Abstract
Established fluorescent probe-based RPA (exo RPA) and RPA-LFD methods for fast and sensitive detection of E. miricola. Exo RPA and RPA-LFD could detect E. miricola genomic DNA at 38 °C in 30 min. The detection sensitivity of exo RPA and RPA-LFD were 102 copies/μL. The exo RPA and RPA-LFD achieved rapid detection of E. miricola without bulky lab equipment.
Elizabethkingia miricola is a highly infectious pathogen, which causes high mortality rate in frog farming. Therefore, it is urgent to develop a rapid and sensitive detection method. In this study, two rapid and specific methods including recombinase polymerase amplification combined with lateral flow dipstick (RPA-LFD) and fluorescent probe-based recombinase polymerase amplification (exo RPA) were established to effectively detect E. miricola, which can accomplish the examination at 38 °C within 30 min. The limiting sensitivity of RPA-LFD and exo RPA (102 copies/μL) was ten-fold higher than that in generic PCR assay. The specificities of the two methods were verified by detecting multiple DNA samples (E. miricola, Staphylococcus aureus, Aeromonas hydrophila, Aeromonas veronii, CyHV-2 and Edwardsiella ictaluri), and the result showed that the single band was displayed in E. miricola DNA only. By tissue bacterial load and qRT-PCR assays, brain is the most sensitive tissue. Random 24 black spotted frog brain samples from farms were tested by generic PCR, basic RPA, RPA-LFD and exo RPA assays, and the results showed that RPA-LFD and exo RPA methods were able to detect E. miricola accurately and rapidly. In summary, the methods of RPA-LFD and exo RPA were able to detect E. miricola conveniently, rapidly, accurately and sensitively. This study provides prospective methods to detect E. miricola infection in frog culture.
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Affiliation(s)
- Meihua Qiao
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China
- Laboratory for Marine Biology and Biotechnology, Pilot National Laboratory for Marine Science and Technology, Qingdao 266237, China
- Engineering Research Center of Green development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education, Wuhan 430070, China
| | - Liqiang Zhang
- Wuhan Academy of Agricultural Science, Wuhan 430070, China
| | - Jiao Chang
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China
| | - Haoxuan Li
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China
| | - Jingkang Li
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China
| | - Weicheng Wang
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China
| | - Gailing Yuan
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China
| | - Jianguo Su
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China
- Laboratory for Marine Biology and Biotechnology, Pilot National Laboratory for Marine Science and Technology, Qingdao 266237, China
- Engineering Research Center of Green development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education, Wuhan 430070, China
- Corresponding author at: Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China.
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Qiao M, Zhang L, Xu C, Huo X, Chang J, Su J. Chitosan and anisodamine enhance the immersion immune efficacy of inactivated Elizabethkingia miricola vaccine in black spotted frogs. FISH & SHELLFISH IMMUNOLOGY 2022; 130:93-102. [PMID: 36087820 DOI: 10.1016/j.fsi.2022.08.072] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2022] [Revised: 07/26/2022] [Accepted: 08/27/2022] [Indexed: 06/15/2023]
Abstract
Black spotted frogs have rich nutrition and delicious meat, and its market consumption has increased year by year. However, outbreaks of the diseases have caused huge losses to the breeding industry. The crooked head disease caused by Elizabethkingia miricola (E. miricola) is highly contagious and lethal, and there is no effective treatment method. Vaccination is the most promising strategy to prevent infectious diseases. Immersion vaccination has attracted many researchers because of its simplicity of operation in preventing infectious diseases. In addition, immersion vaccines can be more effective when used with adjuvants. In this study, we prepared inactivated E. miricola with 0.3% formaldehyde, and the black spotted frogs were vaccinated by soaking in inactivated E. miricola vaccine, anisodamine + vaccine mixture, β-glucan + vaccine mixture, chitosan + vaccine mixture for 60 min. PBS was used as a control. After being challenged by E. miricola, the survival rate of anisodamine + vaccine (57%) and chitosan + vaccine group (63%) was significantly higher than that of the control group (17%). By analyzing pathological sections, we found that the chitosan + vaccine and anisodamine + vaccine groups protected the brain, eye, liver and kidney tissues of the black spotted frogs compared to the control group, which was consistent with the trend of survival rate. In addition, chitosan + vaccine and anisodamine + vaccine groups had better effects on LZM, TSOD and C3 in serum than control group. Meanwhile, the numbers of the percentage of leukocytes/haemocytes in the peripheral blood of immunized black spotted frogs increased. The anisodamine + vaccine group (5.3%) and chitosan + vaccine (5.38%) group were significantly higher than the blank control group (2.24%), which indicate that the two groups induced a more significant immune response and were more resistant to bacterial invasion. The tissue bacterial loads in liver, brain, kidney and eye were significantly lower in the anisodamine + vaccine and chitosan + vaccine groups than that of the control group. This study explored and demonstrated the good efficiency of chitosan and anisodamine as adjuvants for immunization by immersion and provided a reference for improving the efficiency of immunization by immersion.
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Affiliation(s)
- Meihua Qiao
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan, 430070, China; Laboratory for Marine Biology and Biotechnology, Pilot National Laboratory for Marine Science and Technology, Qingdao, 266237, China; Hubei Hongshan Laboratory, Engineering Research Center of Green Development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education, Wuhan, 430070, China
| | - Liqiang Zhang
- Wuhan Academy of Agricultural Science, Wuhan, 430070, China
| | - Chuang Xu
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan, 430070, China
| | - Xingchen Huo
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan, 430070, China
| | - Jiao Chang
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan, 430070, China
| | - Jianguo Su
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan, 430070, China; Laboratory for Marine Biology and Biotechnology, Pilot National Laboratory for Marine Science and Technology, Qingdao, 266237, China; Hubei Hongshan Laboratory, Engineering Research Center of Green Development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education, Wuhan, 430070, China.
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Yang S, Zhang C, Xu W, Li D, Feng Y, Wu J, Luo W, Du X, Du Z, Huang X. Heat Stress Decreases Intestinal Physiological Function and Facilitates the Proliferation of Harmful Intestinal Microbiota in Sturgeons. Front Microbiol 2022; 13:755369. [PMID: 35356512 PMCID: PMC8959899 DOI: 10.3389/fmicb.2022.755369] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2021] [Accepted: 01/06/2022] [Indexed: 11/13/2022] Open
Abstract
Heat is a common source of stress in aquatic environments and can alter the physiological and metabolic functions of aquatic animals, especially their intestinal function. Here, the effects of heat stress on the structure and function of the intestine and the characteristics of the intestinal microbiota were studied in sturgeon (Acipenser baerii ♀ × Acipenser schrenckii ♂ hybrid F1). Sturgeons were exposed to sub-extreme (24°C) and extreme (28°C) high water temperatures for 12 days. The heat stress caused systemic damage to the intestine of sturgeons, which displayed severe enteritis in the valve intestine. The microbial diversity analysis showed that heat stress led to the disorder in intestinal microbiota, manifesting as an explosive increase in the abundance of thermophilic intestinal pathogens such as Plesiomonas, Cetobacterium, and Aeromonas and causing physiological dysfunction in the sturgeons. The disorder was followed by significant inhibition of intestinal digestion with reduced chymotrypsin, α-amylase, and lipase activities in the valve intestine and of antioxidant function with reduced peroxidase (POD) and catalase (CAT) activities. Simultaneously, heat stress reduced the thermal tolerance of sturgeons by reducing Grp75 expression and damaged the valve intestine’s repair ability with increased Tgf-β expression. The results confirmed that heat stress damaged the sturgeon intestines obviously and disturbed the intestinal microbiota, resulting in serious physiological dysfunction. The present study investigated the mechanism of the effect of heat stress on the sturgeon intestine and will help develop strategies to improve the resistance to thermal stress for wild and cultured sturgeons.
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Affiliation(s)
- Shiyong Yang
- Department of Aquaculture, Sichuan Agricultural University, Chengdu, China
| | - Chaoyang Zhang
- Department of Aquaculture, Sichuan Agricultural University, Chengdu, China
| | - Wenqiang Xu
- Department of Aquaculture, Sichuan Agricultural University, Chengdu, China
| | - Datian Li
- Department of Aquaculture, Sichuan Agricultural University, Chengdu, China
| | - Yang Feng
- Basic Veterinary Science, Sichuan Agricultural University, Chengdu, China
| | - Jiayun Wu
- College of Life Sciences, Sichuan Agricultural University, Ya'an, China
| | - Wei Luo
- Department of Aquaculture, Sichuan Agricultural University, Chengdu, China
| | - Xiaogang Du
- College of Life Sciences, Sichuan Agricultural University, Ya'an, China
| | - Zongjun Du
- Department of Aquaculture, Sichuan Agricultural University, Chengdu, China
| | - Xiaoli Huang
- Department of Aquaculture, Sichuan Agricultural University, Chengdu, China
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Trimpert J, Eichhorn I, Vladimirova D, Haake A, Schink AK, Klopfleisch R, Lübke-Becker A. Elizabethkingia miricola infection in multiple anuran species. Transbound Emerg Dis 2020; 68:931-940. [PMID: 32745334 DOI: 10.1111/tbed.13761] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 07/14/2020] [Accepted: 07/28/2020] [Indexed: 11/28/2022]
Abstract
This report describes an outbreak of Elizabethkingia miricola in northern leopard frogs (Lithobates pipiens) and three other species of frogs and toads held in captivity in Germany. The authors examine several treatment options and underline the difficulties in treating larger numbers of individuals with antimicrobials applied through bathing. Whole genome sequencing of three bacterial isolates emphasizes their relatedness to other frog isolates and leads us to conclude that E. miricola is an emerging and difficult to treat pathogen with a broad host range across anuran species. Moreover, ambiguities in identification of flavobacteria associated with disease in frogs reported in the literature make it seem possible that E. miricola has been overlooked as an anuran pathogen in the past.
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Affiliation(s)
- Jakob Trimpert
- Institut für Virologie, Freie Universität Berlin, Berlin, Germany
| | - Inga Eichhorn
- Institut für Mikrobiologie und Tierseuchen, Freie Universität Berlin, Berlin, Germany
| | | | - Alexander Haake
- Institut für Tierpathologie, Freie Universität Berlin, Berlin, Germany
| | - Anne-Kathrin Schink
- Institut für Mikrobiologie und Tierseuchen, Freie Universität Berlin, Berlin, Germany
| | | | - Antina Lübke-Becker
- Institut für Mikrobiologie und Tierseuchen, Freie Universität Berlin, Berlin, Germany
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