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Li MN, Wang T, Wang N, Han Q, You XM, Zhang S, Zhang CC, Shi YQ, Qiao PZ, Man CL, Feng T, Li YY, Zhu Z, Quan KJ, Xu TL, Zhang GF. A detailed analysis of 16S rRNA gene sequencing and conventional PCR-based testing for the diagnosis of bacterial pathogens and discovery of novel bacteria. Antonie Van Leeuwenhoek 2024; 117:102. [PMID: 39012584 DOI: 10.1007/s10482-024-01999-1] [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: 01/18/2024] [Accepted: 07/05/2024] [Indexed: 07/17/2024]
Abstract
This study represents the first analysis of the bacterial community in chickens affected by swollen head syndrome, utilizing 16S rRNA gene sequencing. Samples were obtained from clinical laying chickens and were examined for the presence of Avibacterium paragallinarum (APG) and Ornithobacterium rhinotracheale (ORT) using conventional polymerase chain reaction (PCR). From the samples, five APG-positive (APG) and APG-negative (N-APG) samples were chosen, along with five specific pathogen-free chickens, for 16S rRNA gene sequencing. Results showed that APG and ORT were widely detected in the chicken samples with swollen head syndrome (SHS, 9/10), while APG was detected in all five specific pathogen-free (SPF) samples. In contrast, conventional PCR sensitivity was found to be inadequate for diagnosis, with only 35.7% (5/14) and 11.1% (1/9) sensitivity for APG and ORT, respectively, based on 16S rRNA gene sequencing data. Furthermore, 16S rRNA gene sequencing was able to quantify the bacteria in the samples, revealing that the relative abundance of APG in the APG group ranged from 2.7 to 81.3%, while the relative abundance of APG in the N-APG group ranged from 0.1 to 21.0%. Notably, a low level of APG was also detected in all 5 SPF samples. The study also identified a significant number of animal and human common bacterial pathogens, including but not limited to Gallibacterium anatis, Riemerella columbina, Enterococcus cecorum, Mycoplasma synoviae, Helicobacter hepaticus, and Staphylococcus lentus. In conclusion, 16S rRNA gene sequencing is a valuable tool for bacterial pathogen diagnosis and the discovery of novel bacterial pathogens, while conventional PCR is not reliable for diagnosis.
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Affiliation(s)
- Mei-Na Li
- International Joint Research Center for Microbiology and Infectious Diseases, Wohua Biotech, Binzhou, 256600, Shandong, China
| | - Ting Wang
- International Joint Research Center for Microbiology and Infectious Diseases, Wohua Biotech, Binzhou, 256600, Shandong, China
| | - Nan Wang
- International Joint Research Center for Microbiology and Infectious Diseases, Wohua Biotech, Binzhou, 256600, Shandong, China
| | - Qiang Han
- International Joint Research Center for Microbiology and Infectious Diseases, Wohua Biotech, Binzhou, 256600, Shandong, China
| | - Xue-Ming You
- International Joint Research Center for Microbiology and Infectious Diseases, Wohua Biotech, Binzhou, 256600, Shandong, China
| | - Shuai Zhang
- International Joint Research Center for Microbiology and Infectious Diseases, Wohua Biotech, Binzhou, 256600, Shandong, China
| | - Cui-Cui Zhang
- International Joint Research Center for Microbiology and Infectious Diseases, Wohua Biotech, Binzhou, 256600, Shandong, China
| | - Yong-Qiang Shi
- International Joint Research Center for Microbiology and Infectious Diseases, Wohua Biotech, Binzhou, 256600, Shandong, China
| | - Pei-Zhuang Qiao
- International Joint Research Center for Microbiology and Infectious Diseases, Wohua Biotech, Binzhou, 256600, Shandong, China
| | - Cheng-Lian Man
- International Joint Research Center for Microbiology and Infectious Diseases, Wohua Biotech, Binzhou, 256600, Shandong, China
| | - Teng Feng
- International Joint Research Center for Microbiology and Infectious Diseases, Wohua Biotech, Binzhou, 256600, Shandong, China
| | - Yue-Yue Li
- International Joint Research Center for Microbiology and Infectious Diseases, Wohua Biotech, Binzhou, 256600, Shandong, China
| | - Zhuang Zhu
- Department of Basic and Forensic Medicine, North Sichuan Medical College, Nanchong, 637100, Sichuan, China
| | - Ke-Ji Quan
- International Joint Research Center for Microbiology and Infectious Diseases, Wohua Biotech, Binzhou, 256600, Shandong, China.
| | - Teng-Lin Xu
- International Joint Research Center for Microbiology and Infectious Diseases, Wohua Biotech, Binzhou, 256600, Shandong, China.
| | - George Fei Zhang
- International Joint Research Center for Microbiology and Infectious Diseases, Wohua Biotech, Binzhou, 256600, Shandong, China.
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Çakır Bayram L, Abay S, Satıcıoğlu İB, Güvenç T, Ekebaş G, Aydın F. The ocular pyogranulomatous lesion in a Gentoo penguin (Pygoscelis papua) from the Antarctic Peninsula: evaluation of microbiological and histopathological analysis outcomes. Vet Res Commun 2021; 45:143-158. [PMID: 34128178 DOI: 10.1007/s11259-021-09796-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Accepted: 05/03/2021] [Indexed: 10/21/2022]
Abstract
In this study, it was aimed to present the results of microbiological, cytological, histopathological, and immunohistochemical analyses of ocular samples from an Antarctic (Ardley Island, King George Island) Gentoo penguin chick (Pygoscelis papua) with a pyogranulomatous lesion in the right eye. Samples were taken from both the healthy left eye and the lesion in the right eye. Conventional culture methods and phenotypic and molecular tests were used for bacterial isolation and identification, respectively. None of the isolates could be identified phenotypically. As a result, four of the five isolates obtained from the right eye were considered to belong to putative novel bacterial species and taxa as their similarity to GenBank data was below 98.75%. The isolates were considered to be Pasteurellaceae bacterium, Corynebacterium ciconiae, Cardiobacteriaceae bacterium, Actinomyces sp., and Dermabacteraceae bacterium. The only isolate from the left eye was identified as Psychrobacter pygoscelis. The cytological analysis demonstrated cell infiltrates composed mostly of degenerate heterophils, reactive macrophages, plasma cells, lymphocytes, and eosinophils. Based on histopathological findings, the lesion was defined as a typical pyogranulomatous lesion. Immunohistochemistry demonstrated that the granuloma was positive for TNF-α, IL-4, MMP-9, IL-1β, and IL-6. This is the first documented report of the unilateral pyogranulomatous ocular lesion in a Gentoo penguin chick, living in its natural habitat in Antarctica. This report also describes the isolation of four bacteria from the infected eye, which are considered to belong to novel Genus, species, or taxa. The primary bacterial pathogen that caused the ocular lesion was not able to be detected and remains unclear.
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Affiliation(s)
- Latife Çakır Bayram
- Department of Pathology, Faculty of Veterinary Medicine, Erciyes University, Kayseri, Turkey.
| | - Seçil Abay
- Department of Microbiology, Faculty of Veterinary Medicine, Erciyes University, Kayseri, Turkey
| | - İzzet Burçin Satıcıoğlu
- Department of Aquatic Animal Diseases, Faculty of Veterinary Medicine, Erciyes University, Kayseri, Turkey
| | - Tolga Güvenç
- Department of Pathology, Faculty of Veterinary Medicine, Ondokuz Mayıs University, Samsun, Turkey
| | - Görkem Ekebaş
- Department of Pathology, Faculty of Veterinary Medicine, Erciyes University, Kayseri, Turkey
| | - Fuat Aydın
- Department of Microbiology, Faculty of Veterinary Medicine, Erciyes University, Kayseri, Turkey
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Diptesh A, Deshmukh S, Sodhi S, Banga HS. Differential susceptibility and immune response in chicken and Japanese quail towards Avibacterium paragallinarum. JOURNAL OF APPLIED ANIMAL RESEARCH 2020. [DOI: 10.1080/09712119.2020.1848844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Aagza Diptesh
- Department of Veterinary Pathology, Guru Angad Dev Veterinary and Animal Science University, Ludhiana, India
| | - Sidhartha Deshmukh
- Department of Veterinary Pathology, Guru Angad Dev Veterinary and Animal Science University, Ludhiana, India
| | - Sandeep Sodhi
- Department of Dairy Chemistry, Guru Angad Dev Veterinary and Animal Science University, Ludhiana, India
| | - Harmanjit Singh Banga
- Department of Veterinary Pathology, Guru Angad Dev Veterinary and Animal Science University, Ludhiana, India
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Alvarez KLF, Poma-Acevedo A, Fernández-Díaz M. A transient increase in MHC-II low monocytes after experimental infection with Avibacterium paragallinarum (serovar B-1) in SPF chickens. Vet Res 2020; 51:123. [PMID: 32977847 PMCID: PMC7517641 DOI: 10.1186/s13567-020-00840-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Accepted: 09/02/2020] [Indexed: 12/14/2022] Open
Abstract
Infectious coryza (IC), an upper respiratory tract disease affecting chickens, is caused by Avibacterium paragallinarum. The clinical manifestations of IC include nasal discharge, facial swelling, and lacrimation. This acute disease results in high morbidity and low mortality, while the course of the disease is prolonged and mortality rates are increased in cases with secondary infections. Studies regarding the immune response in infected chickens are scarce, and the local immune response is the focal point of investigation. However, a large body of work has demonstrated that severe infections can impact the systemic immune response. The objective of this study was to evaluate the systemic effects of Avibacterium paragallinarum (serovar B-1) infection on immune cells in specific pathogen-free (SPF) chickens. The current study revealed the presence of a transient circulating monocyte population endowed with high phagocytic ability and clear downregulation of major histocompatibility complex class II (MHC-II) surface expression. In human and mouse studies, this monocyte population (identified as tolerant monocytes) has been correlated with a dysfunctional immune response, increasing the risk of secondary infections and mortality. Consistent with this dysfunctional immune response, we demonstrate that B cells from infected chickens produced fewer antibodies than those from control chickens. Moreover, T cells isolated from the peripheral blood of infected chickens had a lower ability to proliferate in response to concanavalin A than those isolated from control chickens. These findings could be related to the severe clinical signs observed in complicated IC caused by the presence of secondary infections.
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Affiliation(s)
- Karla Lucía F Alvarez
- Research and Development Laboratories, FARVET, Carretera Panamericana Sur No 766 Km 198.5, Ica, Peru.
| | - Astrid Poma-Acevedo
- Research and Development Laboratories, FARVET, Carretera Panamericana Sur No 766 Km 198.5, Ica, Peru
| | - Manolo Fernández-Díaz
- Research and Development Laboratories, FARVET, Carretera Panamericana Sur No 766 Km 198.5, Ica, Peru
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Ahmed A, Deshmukh S, Banga HS, Sodhi S, Brar RS. Assessment of antigenic specificity of polyclonal antisera raised against Avibacterium paragallinarum by ELISA. Vet Anim Sci 2020; 9:100119. [PMID: 32734120 PMCID: PMC7386657 DOI: 10.1016/j.vas.2020.100119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Revised: 12/03/2019] [Accepted: 05/07/2020] [Indexed: 11/05/2022] Open
Abstract
Lack of availability of commercial antibodies against whole-cell antigen or an antigenic epitope of Avibacterium paragallinarum (Av. paragallinarum) has hindered the development of novel immunoassays for the diagnose infectious coryza (IC). In this study, we raised polyclonal antisera against Av. paragallinarum and evaluated its antigenic-specificity using enzyme linked immunosorbent assay (ELISA). We standardized antigen coating concentration(s), antibody detection limit, and optimal range of dilutions of primary antisera and secondary conjugated antibody. Our results show the development of antigen-specific antibody response in rabbits following repeated antigenic exposure with 0.5% formalinized antigen over a period of four weeks. Further, we showed its possible applicability in detection of pathogens in tissues by immunohistochemistry for confirmatory disease diagnosis and disease pathogenetic study.
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Affiliation(s)
- Ajaz Ahmed
- Department of Veterinary Pathology, Guru Angad Dev Veterinary and Animal Science University, Ludhiana, Punjab, India
| | - Sidhartha Deshmukh
- Department of Veterinary Pathology, Guru Angad Dev Veterinary and Animal Science University, Ludhiana, Punjab, India
| | - Harmanjit Singh Banga
- Department of Veterinary Pathology, Guru Angad Dev Veterinary and Animal Science University, Ludhiana, Punjab, India
| | - Sandeep Sodhi
- Department of Dairy Chemistry, Guru Angad Dev Veterinary and Animal Science University, Ludhiana, Punjab, India
| | - Rajinder Singh Brar
- Department of Veterinary Pathology, Guru Angad Dev Veterinary and Animal Science University, Ludhiana, Punjab, India
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Eldin WFS, Abd-El Samie LK, Darwish WS, Elewa YHA. Prevalence, virulence attributes, and antibiogram of Bordetella avium isolated from turkeys in Egypt. Trop Anim Health Prod 2019; 52:397-405. [PMID: 31376060 DOI: 10.1007/s11250-019-02027-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Accepted: 07/24/2019] [Indexed: 11/29/2022]
Abstract
Turkey coryza is a major respiratory disease caused by Bordetella avium (B. avium). It occurs in all ages of turkeys and is characterized by high morbidity and low mortality rates. The present study aimed firstly at determination of the prevalence rates of B. avium in turkeys reared in Egypt at different ages using various diagnostic methods including clinical examination, histopathology, enzyme-linked immunosorbent assay (ELISA), bacterial culture, and polymerase chain reaction (PCR). Using PCR, virulence-associated genes were detected in the confirmed B. avium isolates. Furthermore, the antibiotic resistance profiles of the confirmed B. avium isolates were examined. The achieved results indicated isolation and identification of B. avium infection at different ages of turkeys reared in Egypt. The overall PCR-confirmed prevalence rate of B. avium was 22.95%. The identified B. avium strains harbored virulence-associated genes responsible for colonization in the respiratory tract of turkeys including Bordetella virulence gene (100%), fimbriae (71.14%), and filamentous hemagglutinin (85.68%). The isolated B. avium strains showed multidrug resistance profiles. B. avium isolates were resistant to penicillin (92.82%), ceftiofur (85.68%), nalidixic acid (78.54%), and lincomycin (71.40%). The identified B. avium strains showed clear sensitivities to both gentamicin and neomycin, suggesting these as possible antimicrobial candidates for the control of B. avium infection in turkeys.
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Affiliation(s)
- Walaa Fathy Saad Eldin
- Educational Veterinary Hospital, Faculty of Veterinary Medicine, Zagazig University, Zagazig, 44519, Egypt
| | - Lammah K Abd-El Samie
- Educational Veterinary Hospital, Faculty of Veterinary Medicine, Zagazig University, Zagazig, 44519, Egypt
| | - Wageh Sobhy Darwish
- Food Control Department, Faculty of Veterinary Medicine, Zagazig University, Zagazig, 44519, Egypt. .,Laboratory of Advanced Lipid Analysis, Faculty of Health Sciences, Hokkaido University, Sapporo, 060-0812, Japan.
| | - Yaser Hosny A Elewa
- Department of Histology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, 44519, Egypt
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