1
|
Antimicrobial resistance in bacteria isolated from peridomestic Rattus species: A scoping literature review. One Health 2023. [DOI: 10.1016/j.onehlt.2023.100522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2023] Open
|
2
|
Ma L, Sedney C, Su Y, Dewan KK, Linz B, Harvill ET. Contribution of a Novel Pertussis Toxin-Like Factor in Mediating Persistent Otitis Media. Front Cell Infect Microbiol 2022; 12:795230. [PMID: 35360099 PMCID: PMC8963424 DOI: 10.3389/fcimb.2022.795230] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Accepted: 02/17/2022] [Indexed: 11/13/2022] Open
Abstract
Chronic otitis media (COM) is the long-term infection and inflammation of the middle ears typically caused by upper respiratory tract pathogens that are able to ascend the Eustachian tube. Our understanding of contributing factors is limited because human otopathogens cannot naturally colonize or persist in the middle ears of mice. We recently described a natural COM in mice caused by Bordetella pseudohinzii and proposed this as an experimental system to study bacterial mechanisms of immune evasion that allow persistent infection of the middle ear. Here we describe a novel pertussis toxin (PTx)-like factor unique to B. pseudohinzii, apparently acquired horizontally, that is associated with its particularly efficient persistence and pathogenesis. The catalytic subunit of this toxin, PsxA, has conserved catalytic sites and substantial predicted structural homology to pertussis toxin catalytic subunit PtxA. Deletion of the gene predicted to encode the catalytic subunit, psxA, resulted in a significant decrease in persistence in the middle ears. The defect was not observed in mice lacking T cells, indicating that PsxA is necessary for persistence only when T cells are present. These results demonstrate the role of a novel putative toxin in the persistence of B. pseudohinzii and its generation of COM. This PsxA-mediated immune evasion strategy may similarly be utilized by human otopathogens, via other PTx-like toxins or alternative mechanisms to disrupt critical T cell functions necessary to clear bacteria from the middle ear. This work demonstrates that this experimental system can allow for the detailed study of general strategies and specific mechanisms that otopathogens use to evade host immune responses to persist in the middle ear to cause COM.
Collapse
Affiliation(s)
- Longhuan Ma
- Department of Infectious Diseases, College of Veterinary Medicine, University of Georgia, Athens, GA, United States
| | - Colleen Sedney
- Department of Infectious Diseases, College of Veterinary Medicine, University of Georgia, Athens, GA, United States
| | - Yang Su
- Department of Biochemistry and Molecular Biology, University of Georgia, Athens, GA, United States
| | - Kalyan K. Dewan
- Department of Infectious Diseases, College of Veterinary Medicine, University of Georgia, Athens, GA, United States
| | - Bodo Linz
- Department of Infectious Diseases, College of Veterinary Medicine, University of Georgia, Athens, GA, United States
| | - Eric T. Harvill
- Department of Infectious Diseases, College of Veterinary Medicine, University of Georgia, Athens, GA, United States
| |
Collapse
|
3
|
Jaeger N, McDonough RT, Rosen AL, Hernandez-Leyva A, Wilson NG, Lint MA, Russler-Germain EV, Chai JN, Bacharier LB, Hsieh CS, Kau AL. Airway Microbiota-Host Interactions Regulate Secretory Leukocyte Protease Inhibitor Levels and Influence Allergic Airway Inflammation. Cell Rep 2021; 33:108331. [PMID: 33147448 PMCID: PMC7685510 DOI: 10.1016/j.celrep.2020.108331] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 08/22/2020] [Accepted: 10/08/2020] [Indexed: 01/04/2023] Open
Abstract
Homeostatic mucosal immune responses are fine-tuned by naturally evolved interactions with native microbes, and integrating these relationships into experimental models can provide new insights into human diseases. Here, we leverage a murine-adapted airway microbe, Bordetella pseudohinzii (Bph), to investigate how chronic colonization impacts mucosal immunity and the development of allergic airway inflammation (AAI). Colonization with Bph induces the differentiation of interleukin-17A (IL-17A)-secreting T-helper cells that aid in controlling bacterial abundance. Bph colonization protects from AAI and is associated with increased production of secretory leukocyte protease inhibitor (SLPI), an antimicrobial peptide with anti-inflammatory properties. These findings are additionally supported by clinical data showing that higher levels of upper respiratory SLPI correlate both with greater asthma control and the presence of Haemophilus, a bacterial genus associated with AAI. We propose that SLPI could be used as a biomarker of beneficial host-commensal relationships in the airway. Asthma is known to be modified by airway microbes. Jaeger et al. use a murine-adapted bacterium to show that airway colonization evokes a Th17 response associated with increased SLPI, an antimicrobial peptide, and protection from lung inflammation. In people, SLPI was correlated with airway microbiota composition.
Collapse
Affiliation(s)
- Natalia Jaeger
- Division of Allergy and Immunology, Department of Medicine and Center for Women's Infectious Disease Research, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Ryan T McDonough
- Division of Allergy and Immunology, Department of Medicine and Center for Women's Infectious Disease Research, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Anne L Rosen
- Division of Allergy and Immunology, Department of Medicine and Center for Women's Infectious Disease Research, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Ariel Hernandez-Leyva
- Division of Allergy and Immunology, Department of Medicine and Center for Women's Infectious Disease Research, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Naomi G Wilson
- Division of Allergy and Immunology, Department of Medicine and Center for Women's Infectious Disease Research, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Michael A Lint
- Division of Allergy and Immunology, Department of Medicine and Center for Women's Infectious Disease Research, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Emilie V Russler-Germain
- Division of Rheumatology, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Jiani N Chai
- Division of Rheumatology, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Leonard B Bacharier
- Division of Allergy, Immunology and Pulmonary Medicine, Department of Pediatrics, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Chyi-Song Hsieh
- Division of Rheumatology, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Andrew L Kau
- Division of Allergy and Immunology, Department of Medicine and Center for Women's Infectious Disease Research, Washington University School of Medicine, St. Louis, MO 63110, USA.
| |
Collapse
|
4
|
Abstract
Bordetella bronchiseptica is a potential zoonotic pathogen, which mainly causes respiratory diseases in humans and a variety of animal species. B. bronchiseptica is one of the important pathogens isolated from rabbits in Fujian Province. However, the knowledge of the epidemiology and characteristics of the B. bronchiseptica in rabbits in Fujian Province is largely unknown. In this study, 219 B. bronchiseptica isolates recovered from lung samples of dead rabbits with respiratory diseases in Fujian Province were characterised by multi-locus sequencing typing, screening virulence genes and testing antimicrobial susceptibility. The results showed that the 219 isolates were typed into 11 sequence types (STs) including five known STs (ST6, ST10, ST12, ST14 and ST33) and six new STs (ST88, ST89, ST90, ST91, ST92 and ST93) and the ST33 (30.14%, 66/219), ST14 (26.94%, 59/219) and ST12 (16.44%, 36/219) were the three most prevalent STs. Surprisingly, all the 219 isolates carried the five virulence genes (fhaB, prn, cyaA, dnt and bteA) in the polymerase chain reaction screening. Moreover, the isolates were resistant to cefixime, ceftizoxime, cefatriaxone and ampicillin at rates of 33.33%, 31.05%, 11.87% and 3.20%, respectively. This study showed the genetic diversity of B. bronchiseptica in rabbits in Fujian Province, and the colonisation of the human-associated ST12 strain in rabbits in Fujian Province. The results might be useful for monitoring the epidemic strains, developing preventive methods and preventing the transmission of epidemic strains from rabbits to humans.
Collapse
|
5
|
Genotypic and phenotypic adaptation of pathogens: lesson from the genus Bordetella. Curr Opin Infect Dis 2020; 32:223-230. [PMID: 30921085 DOI: 10.1097/qco.0000000000000549] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
PURPOSE OF REVIEW To relate genomic changes to phenotypic adaptation and evolution from environmental bacteria to obligate human pathogens, focusing on the examples within Bordetella species. RECENT FINDINGS Recent studies showed that animal-pathogenic and human-pathogenic Bordetella species evolved from environmental ancestors in soil. The animal-pathogenic Bordetella bronchiseptica can hijack the life cycle of the soil-living amoeba Dictyostelium discoideum, surviving inside single-celled trophozoites, translocating to the fruiting bodies and disseminating along with amoeba spores. The association with amoeba may have been a 'training ground' for bacteria during the evolution to pathogens. Adaptation to an animal-associated life style was characterized by decreasing metabolic versatility and genome size and by acquisition of 'virulence factors' mediating the interaction with the new animal hosts. Subsequent emergence of human-specific pathogens, such as Bordetella pertussis from zoonoses of broader host range progenitors, was accompanied by a dramatic reduction in genome size, marked by the loss of hundreds of genes. SUMMARY The evolution of Bordetella from environmental microbes to animal-adapted and obligate human pathogens was accompanied by significant genome reduction with large-scale gene loss during divergence.
Collapse
|
6
|
Ma L, Huang S, Luo Y, Min F, He L, Chen M, Pan J, Zhang Y, Wang J. Isolation and characterization of Bordetella pseudohinzii in mice in China. Animal Model Exp Med 2019; 2:217-221. [PMID: 31773098 PMCID: PMC6762218 DOI: 10.1002/ame2.12075] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2019] [Revised: 07/15/2019] [Accepted: 07/16/2019] [Indexed: 12/24/2022] Open
Abstract
We report on the first detection and isolation of B. pseudohinzii (Bordetella pseudohinzii) in laboratory mice in China. Forty-one B. pseudohinzii strains were isolated from 3094 mice in 33 different laboratory animal facilities in southern China. The isolates were identified through culture and genome sequenceing. Phylogenetic analysis based on the sequences of 16S rRNA and OmpA genes demonstrated that these strains were on the same clade as other B. pseudohinzii strains isolated from mice. Experimental infected mice presented an asymptomatic infection. B. pseudohinzii replicated in both the respiratory tract and the digestive tract. Most importantly B. pseudohinzii shed via feces and infected a group of sentinel mice in a separate cage via cage padding contaminated with B. pseudohinzii-positive feces, indicating that B. pseudohinzii could transmit efficiently among mice and contaminate environmental facilities. Our study highlights the importance of routine monitoring of the pathogen in laboratory mice and provides vital insights into the transmission of Brodetellae in rodents and human.
Collapse
Affiliation(s)
- Lei Ma
- Guangdong Key Laboratory of Laboratory AnimalsGuangdong Laboratory Animals Monitoring InstituteGuangzhouGuangdongChina
| | - Shuwu Huang
- Guangdong Key Laboratory of Laboratory AnimalsGuangdong Laboratory Animals Monitoring InstituteGuangzhouGuangdongChina
| | - Yinzhu Luo
- Guangdong Key Laboratory of Laboratory AnimalsGuangdong Laboratory Animals Monitoring InstituteGuangzhouGuangdongChina
| | - Fangui Min
- Guangdong Key Laboratory of Laboratory AnimalsGuangdong Laboratory Animals Monitoring InstituteGuangzhouGuangdongChina
| | - Lifang He
- Guangdong Key Laboratory of Laboratory AnimalsGuangdong Laboratory Animals Monitoring InstituteGuangzhouGuangdongChina
| | - Meiling Chen
- Guangdong Key Laboratory of Laboratory AnimalsGuangdong Laboratory Animals Monitoring InstituteGuangzhouGuangdongChina
| | - Jinchun Pan
- Guangdong Key Laboratory of Laboratory AnimalsGuangdong Laboratory Animals Monitoring InstituteGuangzhouGuangdongChina
| | - Yu Zhang
- Guangdong Key Laboratory of Laboratory AnimalsGuangdong Laboratory Animals Monitoring InstituteGuangzhouGuangdongChina
| | - Jing Wang
- Guangdong Key Laboratory of Laboratory AnimalsGuangdong Laboratory Animals Monitoring InstituteGuangzhouGuangdongChina
| |
Collapse
|
7
|
Dewan KK, Taylor-Mulneix DL, Campos LL, Skarlupka AL, Wagner SM, Ryman VE, Gestal MC, Ma L, Blas-Machado U, Faddis BT, Harvill ET. A model of chronic, transmissible Otitis Media in mice. PLoS Pathog 2019; 15:e1007696. [PMID: 30970038 PMCID: PMC6476515 DOI: 10.1371/journal.ppat.1007696] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Revised: 04/22/2019] [Accepted: 03/11/2019] [Indexed: 12/15/2022] Open
Abstract
Infection and inflammation of the middle ears that characterizes acute and chronic otitis media (OM), is a major reason for doctor visits and antibiotic prescription, particularly among children. Nasopharyngeal pathogens that are commonly associated with OM in humans do not naturally colonize the middle ears of rodents, and experimental models in most cases involve directly injecting large numbers of human pathogens into the middle ear bullae of rodents, where they induce a short-lived acute inflammation but fail to persist. Here we report that Bordetella pseudohinzii, a respiratory pathogen of mice, naturally, efficiently and rapidly ascends the eustachian tubes to colonize the middle ears, causing acute and chronic histopathological changes with progressive decrease in hearing acuity that closely mimics otitis media in humans. Laboratory mice experimentally inoculated intranasally with very low numbers of bacteria consistently have their middle ears colonized and subsequently transmit the bacterium to cage mates. Taking advantage of the specifically engineered and well characterized immune deficiencies available in mice we conducted experiments to uncover different roles of T and B cells in controlling bacterial numbers in the middle ear during chronic OM. The iconic mouse model provides significant advantages for elucidating aspects of host-pathogen interactions in otitis media that are currently not possible using other animal models. This natural model of otitis media permits the study of transmission between hosts, efficient early colonization of the respiratory tract, ascension of the eustachian tube, as well as colonization, pathogenesis and persistence in the middle ear. It also allows the combination of the powerful tools of mouse molecular immunology and bacterial genetics to determine the mechanistic basis for these important processes.
Collapse
Affiliation(s)
- Kalyan K. Dewan
- Department of Infectious Diseases, College of Veterinary Medicine, University of Georgia, Athens, Georgia, United States of America
- * E-mail:
| | - Dawn L. Taylor-Mulneix
- Center for Vaccines and Immunology, College of Veterinary Medicine, University of Georgia, Athens, Georgia, United States of America
| | - Laura L. Campos
- University of Colorado Hospital, Aurora, Colorado, United States of America
| | - Amanda L. Skarlupka
- Department of Microbiology, Franklin College of Arts and Sciences, University of Georgia, Athens, Georgia, United States of America
| | - Shannon M. Wagner
- Department of Infectious Diseases, College of Veterinary Medicine, University of Georgia, Athens, Georgia, United States of America
| | - Valerie E. Ryman
- Center for Vaccines and Immunology, College of Veterinary Medicine, University of Georgia, Athens, Georgia, United States of America
| | - Monica C. Gestal
- Department of Infectious Diseases, College of Veterinary Medicine, University of Georgia, Athens, Georgia, United States of America
| | - Longhua Ma
- Department of Infectious Diseases, College of Veterinary Medicine, University of Georgia, Athens, Georgia, United States of America
| | - Uriel Blas-Machado
- Department of Pathology, Athens Veterinary Diagnostic Laboratory, College of Veterinary Medicine, University of Georgia, Athens, Georgia, United States of America
| | - Brian T. Faddis
- Department of Otolaryngology-Head and Neck Surgery, Washington University School of Medicine, St. Louis, Missouri, United States of America
| | - Eric T. Harvill
- Department of Infectious Diseases, College of Veterinary Medicine, University of Georgia, Athens, Georgia, United States of America
- Center for Vaccines and Immunology, College of Veterinary Medicine, University of Georgia, Athens, Georgia, United States of America
| |
Collapse
|