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Barrantes Murillo DF, Negrão Watanabe TT, Sasaki E, Pirie GJ, Wakamatsu N. Coinfection by Mycobacterium marinum and Mycolicibacterium fortuitum in a captive adult diamondback water snake causing disseminated mycobacteriosis with acute cutaneous ulceration. J Vet Diagn Invest 2024; 36:269-273. [PMID: 38205524 DOI: 10.1177/10406387231224465] [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: 01/12/2024] Open
Abstract
An adult male captive diamondback water snake (Nerodia rhombifer) was found dead after a 1-d history of lethargy and cutaneous ulcers. The snake had eaten 2 sunfish (Mola spp.) 5 d before death. Gross examination revealed white-to-tan nodules in the lung and liver and segmental intestinal impactions with digested fish. Histopathology confirmed disseminated granulomas with numerous intrahistiocytic acid-fast bacteria in the skin, skeletal muscle, lung, liver, and intestines. Mycobacterium marinum and Mycolicibacterium fortuitum were identified by culture of the hepatic granuloma, followed by PCR and rpoB gene sequencing. To our knowledge, this is the first description of M. marinum and M. fortuitum coinfection in this species. Although M. fortuitum has been isolated from reptiles, lesions associated with its presence in tissues have not been described previously. Interestingly, the mineralization within granulomas that we observed in our case is not reported in mycobacterial infection in reptiles, whereas this finding is common in mammals.
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Affiliation(s)
| | | | - Emi Sasaki
- Department of Pathobiological Sciences, School of Veterinary Medicine, Louisiana State University, and Louisiana Animal Disease Diagnostic Laboratory, Baton Rouge, LA, USA
| | | | - Nobuko Wakamatsu
- Department of Pathobiological Sciences, School of Veterinary Medicine, Louisiana State University, and Louisiana Animal Disease Diagnostic Laboratory, Baton Rouge, LA, USA
- Current address: College of Veterinary Medicine, Purdue University, Indiana Animal Disease Diagnostic Laboratory, West Lafayette, IN, USA
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Pino-Vera R, Abreu-Acosta N, Foronda P. Study of Zoonotic Pathogens in Alien Population of Veiled Chameleons ( Chamaeleo calyptratus) in the Canary Islands (Spain). Animals (Basel) 2023; 13:2288. [PMID: 37508064 PMCID: PMC10376624 DOI: 10.3390/ani13142288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 07/03/2023] [Accepted: 07/10/2023] [Indexed: 07/30/2023] Open
Abstract
Veiled chameleons (Chamaeleo calyptratus) are native to the Arabian Peninsula that have been introduced as pets in many regions around the world, such as the Canary Islands (Spain). In this work, the gastrointestinal content from veiled chameleons of Gran Canaria island (Canary Islands) has been analyzed to determine the presence of zoonotic bacteria. Forty animals were analyzed using different selective culture media and PCR. The most isolated bacteria were Yersinia enterocolitica (52.4%), followed by Salmonella spp. (40.0%), with positive isolates for Salmonella Tyhpi and Salmonella Typhimurium. Pseudomonas spp. was found in 32.5% of the chameleons. More than half were positive for Pseudomonas aeruginosa. Antibiotic-resistant Staphylococcus spp. was detected in six animals plus one isolate of non-resistant Staphylococcus hominis. Multiple mycobacteria species belonging to both tuberculous and non-tuberculous complexes were identified as well as Escherichia coli carrying the stx1 and eae virulence genes with 12.5% and 7.5% prevalence, respectively. Listeria monocytogenes, Campylobacter spp., and Vibrio spp. were found in lower proportion (<5%). The results obtained indicate that veiled chameleons in Gran Canaria could be playing a role in the maintenance and dissemination of the pathogens detected, harming public health and biodiversity.
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Affiliation(s)
- Román Pino-Vera
- Instituto Universitario de Enfermedades Tropicales y Salud Pública de Canarias, Universidad de La Laguna, 38200 San Cristóbal de La Laguna, Spain
- Department Obstetricia y Ginecología, Pediatría, Medicina Preventiva y Salud Pública, Toxicología, Medicina Legal y Forense y Parasitología, Universidad de La Laguna, 38200 San Cristóbal de La Laguna, Spain
- Programa de Doctorado Ciencias Médicas y Farmacéuticas, Desarrollo y Calidad de Vida, Universidad de La Laguna, Avda. Astrofísico F. Sánchez, s/n, 38203 San Cristóbal de La Laguna, Spain
| | - Néstor Abreu-Acosta
- Instituto Universitario de Enfermedades Tropicales y Salud Pública de Canarias, Universidad de La Laguna, 38200 San Cristóbal de La Laguna, Spain
- Nertalab S.L.U., 38001 Santa Cruz de Tenerife, Spain
| | - Pilar Foronda
- Instituto Universitario de Enfermedades Tropicales y Salud Pública de Canarias, Universidad de La Laguna, 38200 San Cristóbal de La Laguna, Spain
- Department Obstetricia y Ginecología, Pediatría, Medicina Preventiva y Salud Pública, Toxicología, Medicina Legal y Forense y Parasitología, Universidad de La Laguna, 38200 San Cristóbal de La Laguna, Spain
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Rubini S, Baruffaldi M, Taddei R, D'Annunzio G, Scaltriti E, Tambassi M, Menozzi I, Bondesan G, Mazzariol S, Centelleghe C, Corazzola G, Savini F, Indio V, Serraino A, Giacometti F. Loggerhead Sea Turtle as Possible Source of Transmission for Zoonotic Listeriosis in the Marine Environment. Vet Sci 2023; 10:vetsci10050344. [PMID: 37235427 DOI: 10.3390/vetsci10050344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Revised: 04/28/2023] [Accepted: 05/08/2023] [Indexed: 05/28/2023] Open
Abstract
Listeria monocytogenes is an ubiquitous pathogen isolated from different host species including fish, crustaceans, and molluscs, but it is rarely a pathogenic microorganism to marine reptiles. In particular, only two cases of fatal disseminated listeriosis have been described in the loggerhead sea turtle (Caretta caretta). In this study, we describe a lethal case of L. monocytogenes infection in a loggerhead sea turtle. The turtle was found alive, stranded on a beach in North-eastern Italy, but perished soon after being rescued. The autoptic examination revealed that heart, lung, liver, spleen, and urinary bladder were disseminated with multiple, firm, 0.1-0.5 mm sized, nodular, white-green lesions. Microscopically, these lesions corresponded with heterophilic granulomas with Gram+ bacteria within the necrotic center. Furthermore, the Ziehl-Neelsen stain was negative for acid-fast organisms. Colonies isolated from heart and liver were tested through MALDI-TOF for species identification, revealing the presence of L. monocytogenes. Whole Genome Sequencing on L. monocytogenes isolates was performed and the subsequent in silico genotyping revealed the belonging to Sequence Type 6 (ST 6); the virulence profile was evaluated, showing the presence of pathogenicity islands commonly observed in ST 6. Our results further confirm that L. monocytogenes should be posed in differential diagnosis in case of nodular lesions of loggerhead sea turtles; thus, given the zoonotic potential of the microorganism, animals should be treated with particular caution. In addition, wildlife animals can play an active role as carriers of possibly pathogenetic and virulent strains and contribute to the distribution of L. monocytogenes in the environment.
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Affiliation(s)
- Silva Rubini
- Laboratory of Ichthyopathology and Marine Biotoxins, Zooprophylactic Institute of Lombardia and Emilia Romagna Regions (IZSLER), 44124 Ferrara, Italy
| | - Matilde Baruffaldi
- Laboratory of Ichthyopathology and Marine Biotoxins, Zooprophylactic Institute of Lombardia and Emilia Romagna Regions (IZSLER), 44124 Ferrara, Italy
| | - Roberta Taddei
- Laboratory of Ichthyopathology and Marine Biotoxins, Zooprophylactic Institute of Lombardia and Emilia Romagna Regions (IZSLER), 44124 Ferrara, Italy
| | - Giulia D'Annunzio
- Laboratory of Ichthyopathology and Marine Biotoxins, Zooprophylactic Institute of Lombardia and Emilia Romagna Regions (IZSLER), 44124 Ferrara, Italy
| | - Erika Scaltriti
- Risk Analysis and Genomic Epidemiology Unit, Zooprophylactic Institute of Lombardia and Emilia Romagna Regions (IZSLER), 43126 Parma, Italy
| | - Martina Tambassi
- Risk Analysis and Genomic Epidemiology Unit, Zooprophylactic Institute of Lombardia and Emilia Romagna Regions (IZSLER), 43126 Parma, Italy
| | - Ilaria Menozzi
- Risk Analysis and Genomic Epidemiology Unit, Zooprophylactic Institute of Lombardia and Emilia Romagna Regions (IZSLER), 43126 Parma, Italy
| | - Giulia Bondesan
- Independent Contractor Veterinary and Delta Rescue President, 44020 Ferrara, Italy
| | - Sandro Mazzariol
- Department of Comparative Biomedicine and Food Science-BCA, University of Padua-Agripolis, 35020 Padua, Italy
| | - Cinzia Centelleghe
- Department of Comparative Biomedicine and Food Science-BCA, University of Padua-Agripolis, 35020 Padua, Italy
| | - Giorgia Corazzola
- Department of Comparative Biomedicine and Food Science-BCA, University of Padua-Agripolis, 35020 Padua, Italy
| | - Federica Savini
- Department of Veterinary Medical Sciences, University of Bologna, 40064 Bologna, Italy
| | - Valentina Indio
- Department of Veterinary Medical Sciences, University of Bologna, 40064 Bologna, Italy
| | - Andrea Serraino
- Department of Veterinary Medical Sciences, University of Bologna, 40064 Bologna, Italy
| | - Federica Giacometti
- Department of Veterinary Medical Sciences, University of Bologna, 40064 Bologna, Italy
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Abreu-Acosta N, Pino-Vera R, Izquierdo-Rodríguez E, Afonso O, Foronda P. Zoonotic Bacteria in Anolis sp., an Invasive Species Introduced to the Canary Islands (Spain). Animals (Basel) 2023; 13:ani13030414. [PMID: 36766304 PMCID: PMC9913382 DOI: 10.3390/ani13030414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 01/11/2023] [Accepted: 01/20/2023] [Indexed: 01/28/2023] Open
Abstract
Lizards belonging to the genus Anolis are native to America and have been introduced in many parts of the world. In this work, a gastrointestinal microbiological analysis from Anolis sp. introduced to Tenerife, Canary Island, was carried out. A total of 74 individuals were analyzed by culture and molecular tools. Pseudomonas spp. was the most prevalent bacteria isolated (64.3%), followed by enteropathogenic Escherichia coli with at least one of the investigated virulent genes (stx1, stx2, and eae) (44.6%). The stx2 gene was more prevalent which differs to that reported in other reptiles, probably due to wastewater transmission. Campylobacter spp. was detected in 32.4% of the animals, highlighting the detection of C. jejuni and C. fetus by their relevance to public health. The zoonotic Staphylococcus lugdunensis, found in 14.9% of the animals, was firstly detected in reptiles. Vibrio sp. which is more associated with aquatic environments was found in 10.8% of the lizards in this study, with Vibrio cholerae being found in two of the animals. The prevalence of Salmonella sp. (5.4%) was low, compared with other studies carried out in reptiles. These results indicate that Anolis sp. in Tenerife could be playing a role in the maintenance and spread of the pathogens detected, being a possible risk factor for public health and biodiversity conservation.
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Affiliation(s)
- Néstor Abreu-Acosta
- Nertalab S.L.U. Santa Cruz de Tenerife, Tenerife, 38001 Canary Islands, Spain
- Instituto Universitario de Enfermedades Tropicales y Salud Pública de Canarias, Universidad de La Laguna, La Laguna, Tenerife, 38200 Canary Islands, Spain
| | - Román Pino-Vera
- Instituto Universitario de Enfermedades Tropicales y Salud Pública de Canarias, Universidad de La Laguna, La Laguna, Tenerife, 38200 Canary Islands, Spain
- Department Obstetricia y Ginecología, Pediatría, Medicina Preventiva y Salud Pública, Toxicología, Medicina Legal y Forense y Parasitología, Universidad de La Laguna, La Laguna, Tenerife, 38200 Canary Islands, Spain
| | - Elena Izquierdo-Rodríguez
- Instituto Universitario de Enfermedades Tropicales y Salud Pública de Canarias, Universidad de La Laguna, La Laguna, Tenerife, 38200 Canary Islands, Spain
- Department Obstetricia y Ginecología, Pediatría, Medicina Preventiva y Salud Pública, Toxicología, Medicina Legal y Forense y Parasitología, Universidad de La Laguna, La Laguna, Tenerife, 38200 Canary Islands, Spain
| | - Oscar Afonso
- Área de Medio Ambiente, Gestión y Planeamiento Territorial y Ambiental (Gesplan), Santa Cruz de Tenerife, Tenerife, 38200 Canary Islands, Spain
| | - Pilar Foronda
- Instituto Universitario de Enfermedades Tropicales y Salud Pública de Canarias, Universidad de La Laguna, La Laguna, Tenerife, 38200 Canary Islands, Spain
- Department Obstetricia y Ginecología, Pediatría, Medicina Preventiva y Salud Pública, Toxicología, Medicina Legal y Forense y Parasitología, Universidad de La Laguna, La Laguna, Tenerife, 38200 Canary Islands, Spain
- Correspondence:
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AHLAT O, ÖZÖNER Ö, FİLİKCİ K, ATALAY VURAL S. Mycobacteriosis in a Nile crocodile (Crocodylus niloticus) from Turkey. ANKARA ÜNIVERSITESI VETERINER FAKÜLTESI DERGISI 2023. [DOI: 10.33988/auvfd.1139830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/12/2023]
Abstract
In this case, mycobacteriosis in a Nile crocodile’s tissues, which were sent from a private zoo, was described pathomorphologically and immunohistochemically. Macroscopically; multifocal, greyish-white areas were observed in the sent lung, liver and spleen. Histologically, a large number of well-demarcated necrotic areas were seen. These areas included nuclei debris locally. Moderate inflammatory cells and a couple of multinucleated giant cells surrounded the necrotic cores. Numerous acid-fast bacilli were detected by Ziehl-Neelsen staining method. Immunolabelling for both Mycobacterium bovis and anti-BCG antibodies was positive in each tissue.
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Affiliation(s)
- Ozan AHLAT
- ANKARA UNIVERSITY, ANKARA FACULTY OF VETERINARY MEDICINE
| | - Özgür ÖZÖNER
- ANKARA UNIVERSITY, ANKARA FACULTY OF VETERINARY MEDICINE
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Vetere A, Bertocchi M, Pagano TB, Di Ianni F, Nardini G. First case of systemic fatal mycobacteriosis caused by Mycobacterium goodii in a pet Kenyan sand boa (Eryx colubrinus loveridgei). BMC Vet Res 2022; 18:291. [PMID: 35883142 PMCID: PMC9317245 DOI: 10.1186/s12917-022-03351-z] [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: 11/05/2021] [Accepted: 06/17/2022] [Indexed: 11/14/2022] Open
Abstract
Background Environmental nontuberculous mycobacteria species that are not members of the M. tuberculosis complex, are ordinary inhabitants of a wide variety of environmental reservoirs and their role in human and animal diseases has been fully recognized. Even if spontaneous mycobacterial infections have been reported in a wide variety of reptiles, this is the first report of systemic fatal mycobacteriosis sustained by Mycobacterium goodii in a pet reptile. Case presentation An adult, wild caught (WC), male Kenyan sand boa (Eryx colubrinus loveridgei) age unknown, was presented for clinical examination due to decreased activity level, decreased appetite and diarrhea. Blood tests showed unreliable results. Coprologic exam showed a moderate to severe presence of flagellates. X rays and ultrasound showed moderate presence of air and faeces in the large intestine. The snake was hospitalized and oral metronidazole was chosen as antiprotozoal agent in association with subcutaneous warm fluids. The snake was discharged after 2 weeks therapy in good clinical condition. Faecal exam resulted negative. One month after, the snake was quickly hospitalized again because of a recrudescence of symptoms. Biochemistry showed severe increase of AST, ALT and biliary acids. Severe leucocytosis and moderate to severe anemia were highlighted. Ultrasound examination revealed a severe diffused alteration of the liver parenchyma and a fine needle aspiration was performed. The cytological diagnosis was mixed inflammation, with a numerous of unstained rod-shaped bacteria both inside macrophages and free in the sample. The snake’s condition rapidly deteriorated and euthanasia was performed. The histology of the coelomic organs confirmed a systemic mycobacteriosis. Real-time PCR identified the mycobacteria as Mycobacterium goodii. Conclusions Species from the genus Mycobacterium are among the most important micro-organism including the causative agents of tuberculosis. Even if the general incidence of disease in reptiles due to mycobacteria is comparatively low, they can serve as reservoirs of many ubiquitous mycobacteria species. Mycobacterium goodii is a rapidly growing non‐tuberculous mycobacterium that has recently been associated with severe infections in animals and humans. Although in this case the pathogenesis was not completely clear, we highlight the zoonotic risk of mycobacteriosis in exotic animals especially in WC specimens.
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Affiliation(s)
- Alessandro Vetere
- Clinica Veterinaria Modena Sud, Piazza dei Tintori, 1, Spilamberto, MO, Italy
| | - Mara Bertocchi
- Department of Veterinary Science, University of Parma, Strada del Taglio 10, 43126, Parma, PR, Italy.
| | | | - Francesco Di Ianni
- Department of Veterinary Science, University of Parma, Strada del Taglio 10, 43126, Parma, PR, Italy
| | - Giordano Nardini
- Clinica Veterinaria Modena Sud, Piazza dei Tintori, 1, Spilamberto, MO, Italy
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Carossino M, Nevarez JG, Sakaguchi K, Paulsen DB, Langohr IM, Strother K, Ferracone J, Roy A, Crossland NA, Del Piero F. An outbreak of systemic chlamydiosis in farmed American alligators ( Alligator mississippiensis). Vet Pathol 2022; 59:860-868. [PMID: 35502797 DOI: 10.1177/03009858221095269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Chlamydia spp are reported to causes systemic disease in a variety of hosts worldwide including few reports in crocodilians. Disease presentations vary from asymptomatic to fulminant disease, some of which are zoonotic. The aim of this study was to describe the pathological, immunohistochemical, and molecular findings associated with the occurrence of a previously unreported Chlamydia sp infection causing a major mortality event in farmed American alligators (Alligator mississippiensis). The outbreak presented with sudden death in juvenile alligators mainly associated with necrotizing hepatitis and myocarditis, followed by the occurrence of conjunctivitis after the initial high mortality event. The widespread inflammatory lesions in multiple organs correlated with intralesional chlamydial organisms identified via immunohistochemistry and confirmed by 23S rRNA-specific real-time quantitative polymerase chain reaction (qPCR) for Chlamydiaceae bacteria. By sequencing and phylogenetic analysis of the OmpA gene, this uncultured Chlamydia sp grouped closely with Chlamydia poikilothermis recently described in snakes. This study highlights the significance of such outbreaks in farmed populations. Enhanced epidemiological monitoring is needed to gain further insight into the biology of Chlamydia sp in alligators, disease dynamics, risk factors, and role of carrier animals.
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Affiliation(s)
- Mariano Carossino
- Louisiana Animal Disease Diagnostic Laboratory & Department of Pathobiological Sciences, School of Veteterinary Medicine, Louisiana State University, Baton Rouge, LA
| | - Javier G Nevarez
- Veterinary Teaching Hospital & Department of Veterinary Clinical Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA
| | | | - Daniel B Paulsen
- Louisiana Animal Disease Diagnostic Laboratory & Department of Pathobiological Sciences, School of Veteterinary Medicine, Louisiana State University, Baton Rouge, LA
| | - Ingeborg M Langohr
- Louisiana Animal Disease Diagnostic Laboratory & Department of Pathobiological Sciences, School of Veteterinary Medicine, Louisiana State University, Baton Rouge, LA
| | - Keith Strother
- Louisiana Animal Disease Diagnostic Laboratory & Department of Pathobiological Sciences, School of Veteterinary Medicine, Louisiana State University, Baton Rouge, LA
| | | | - Alma Roy
- Louisiana Animal Disease Diagnostic Laboratory & Department of Pathobiological Sciences, School of Veteterinary Medicine, Louisiana State University, Baton Rouge, LA
| | - Nicholas A Crossland
- Department of Pathology & National Emerging Infectious Diseases Laboratories, Boston University School of Medicine, Boston, MA
| | - Fabio Del Piero
- Louisiana Animal Disease Diagnostic Laboratory & Department of Pathobiological Sciences, School of Veteterinary Medicine, Louisiana State University, Baton Rouge, LA
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Mixed Infection of Mycobacterium szulgai, M. lentiflavum, and Gram-Negative Nacteria as a Cause of Death in a Brown Caiman Caiman crocodylus: A Case Report. Vet Sci 2022; 9:vetsci9030133. [PMID: 35324861 PMCID: PMC8949478 DOI: 10.3390/vetsci9030133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 03/09/2022] [Accepted: 03/11/2022] [Indexed: 02/01/2023] Open
Abstract
This paper describes a fatal case of nontuberculosis mycobacteriosis in a four-year-old brown caiman kept in captivity. Although the clinical signs were asymptomatic, severe gross lesions were observed, namely necrotic inflammation of the intestines and granulomatous hepatitis. Microbiological and histopathological examination performed on the tissues collected postmortem revealed a mixed infection of Mycobacterium lentiflavum and Mycobacterium szulgai, secondarily mimicked with Salmonella Coeln, Aeromonas hydrofila, Citrobacter freundii, and Providencia rettgeri. Those microorganisms are not only potentially pathogenic to reptiles, but also have a zoonotic importance for humans. Our findings clearly demonstrate the importance of educating owners and maintaining hygiene rules when handling reptiles.
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DETECTION OF MYCOPLASMA AND CHLAMYDIA IN PYTHONS WITH AND WITHOUT SERPENTOVIRUS INFECTION. J Zoo Wildl Med 2022; 52:1167-1174. [PMID: 34998286 DOI: 10.1638/2021-0076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/27/2021] [Indexed: 11/21/2022] Open
Abstract
Serpentoviruses (order Nidovirales) are an important cause of respiratory disease in snakes. Although transmission studies have shown that serpentoviruses can cause respiratory disease in pythons, the possible role of additional potential pathogens is not yet understood. Very little information is available on the role of mycoplasma and chlamydia infections in disease in pythons. Diagnostic samples from 271 pythons of different genera submitted to a laboratory for detection of serpentoviruses were also screened for mycoplasma and chlamydia infections by PCR. Most of the samples were oral swabs. Almost 30% of the samples were positive for serpentoviruses, and mycoplasmas were detected in more than 60% of the pythons. The occurrence of these two pathogens correlated significantly (P < 0.001). Additionally, about 3% of the snakes tested positive for Chlamydia. This study found a high prevalence of mycoplasmas in the tested pythons and a correlation between infections with these bacteria and serpentoviruses in python samples submitted for diagnostic testing. Because the role mycoplasmas play in respiratory diseases of snakes is still largely unknown, further investigations are necessary to evaluate the role of mixed infections in disease.
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10
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Matsumoto M, Fischer U, Sano M, Kato G. Cell-mediated immune response against mycolic acids of Mycobacteroides salmoniphilum in rainbow trout Oncorhynchus mykiss. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2021; 124:104195. [PMID: 34217784 DOI: 10.1016/j.dci.2021.104195] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 06/29/2021] [Accepted: 06/30/2021] [Indexed: 06/13/2023]
Abstract
Mycobacteriosis caused by Mycobacterium spp. causes economic damages to the world aquaculture industry. In mammals, mycolic acids contained in the cell wall of Mycobacterium spp. are presented by CD1b molecule as lipid antigens and induce cell-mediated immunity (CMI). Here, we investigated CMI responses against the mycolic acids of Mycobacterioides salmoniphilum in a CD1-lacking teleost fish, rainbow trout. After stimulation of trout leukocytes with mycolic acids, the number and percentage of CD8α+ T cells increased. Fish immunized with mycolic acids showed an up-regulation of IFN-γ. Further, in vitro re-stimulation of leukocytes derived from immunized fish resulted in proliferation of CD8α+ cells. These data suggest that mycolic acids are recognized as lipid antigens resulting in an activation of rainbow trout CD8α+ cells and up-regulation of the Th1 cytokine IFN-γ. The mycolic acids are promising candidates for vaccines to activate CD8α+ T cells against fish mycobacteriosis.
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Affiliation(s)
- Megumi Matsumoto
- Tokyo University of Marine Science and Technology, Department of Marine Bioscience, 4-5-7 Konan, Minato-ku, Tokyo, 108-8477, Japan
| | - Uwe Fischer
- Friedrich-Loeffler-Institut, Südufer 10, 17493, Greifswald, Germany
| | - Motohiko Sano
- Tokyo University of Marine Science and Technology, Department of Marine Bioscience, 4-5-7 Konan, Minato-ku, Tokyo, 108-8477, Japan
| | - Goshi Kato
- Tokyo University of Marine Science and Technology, Department of Marine Bioscience, 4-5-7 Konan, Minato-ku, Tokyo, 108-8477, Japan.
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Crouch EEV, McAloose D, McEntire MS, Morrisey JK, Miller AD. Pathology of the Bearded Dragon (Pogona vitticeps): a Retrospective Analysis of 36 Cases. J Comp Pathol 2021; 186:51-61. [PMID: 34340804 DOI: 10.1016/j.jcpa.2021.05.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 03/23/2021] [Accepted: 05/20/2021] [Indexed: 11/17/2022]
Abstract
The bearded dragon (Pogona vitticeps) is a common species in the pet reptile trade and in zoological collections. Despite this, only a few reviews detailing common causes of mortality have been published. The goal of this retrospective study was to compile information related to the presence and prevalence of various diseases in bearded dragons in several private and one zoological collection. Findings from 36 animals, necropsied over a 20-year period were categorized on the basis of the cause of death or euthanasia and the organ system affected. Multiple contributors to death were identified in a subset of animals (n = 12; 33.33%) and were counted in more than one category. The most common contributors to death by category were inflammatory (infectious or non-infectious) diseases (n = 25; 69.44%), followed by chronic/degenerative diseases (n = 17; 47.22%). Diseases or conditions that were systemic, or affected the hepatobiliary system, were the most commonly implicated in death. The most frequent histological findings included hepatic fatty change, renal tubular epithelial pigmentation and the presence of faveolar hyaline-like material. Although Chi square testing did not reveal an association between these common findings and comorbidities, a statistically significant association was found between chronic/degenerative causes of death and renal tubular epithelial pigment. Chi square testing of categorical variables, including contributors to death, primary organ(s) affected, sex, age class and institution, identified statistically significant associations between males and chronic/degenerative disease (P = 0.043) and inflammatory contributors to death and private collection animals (P = 0.039). Death due to inflammatory contributors was significantly higher in the 1-5-year-old and >5-year-old age classes (P = 0.02).
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Affiliation(s)
- Esther E V Crouch
- Charles River Laboratories, Pathology, Wilmington, Massachusetts, USA; Department of Biomedical Sciences, Section of Anatomic Pathology, Cornell University, Ithaca, USA; Wildlife Conservation Society, Zoological Health Program, Bronx Zoo, New York, USA
| | - Denise McAloose
- Wildlife Conservation Society, Zoological Health Program, Bronx Zoo, New York, USA
| | - Michael S McEntire
- Department of Clinical Sciences, Section of Zoological Medicine, Cornell University, Ithaca, New York, USA
| | - James K Morrisey
- Department of Clinical Sciences, Section of Zoological Medicine, Cornell University, Ithaca, New York, USA
| | - Andrew D Miller
- Department of Biomedical Sciences, Section of Anatomic Pathology, Cornell University, Ithaca, USA.
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Pet-turtles: a potential source of human pathogenic bacteria. Arch Microbiol 2021; 203:3785-3792. [PMID: 34146113 DOI: 10.1007/s00203-021-02428-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2020] [Revised: 05/07/2021] [Accepted: 06/08/2021] [Indexed: 10/21/2022]
Abstract
Human infections caused by the bacterial pathogens transmitted from pet-turtles are becoming very common and getting more importance as the turtles are considered unsafe pet animals, mainly for children and immunocompromised people. Pet-turtles are known as the reservoir of different bacterial species as their intestinal microflora. Extrinsic stressors, such as crowding, unhygienic handling, poor water quality, polluted feeding and inadequate nutrition, can predispose pet-turtles to bacterial infections. The presence of different virulence genes leads to the virulent potential of bacteria. The virulent bacteria can cause infections in turtles and humans, if the turtle owners or shopkeepers don't practice proper sanitation while handling turtles. The aim of this review paper was to provide an overview of different bacterial species isolated from pet-turtles for awareness-raising about potential health risks related to raise pet-turtles.
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13
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Bertolini M, Schwertz CI, Vielmo A, Piva MM, Bilhalva LC, Pavarini SP, Driemeier D, Sonne L. Pathological and Microbiological Findings in Fatal Cases of Salmonellosis in Captive Bothrops Snakes in Southern Brazil. J Comp Pathol 2021; 186:7-12. [PMID: 34340807 DOI: 10.1016/j.jcpa.2021.04.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Revised: 01/27/2021] [Accepted: 04/26/2021] [Indexed: 10/21/2022]
Abstract
Salmonella spp. are gram-negative commensal bacteria of vertebrates, including reptiles. Infected snakes may be asymptomatic or manifest clinical disease and death, especially after stressful events. Salmonellosis was diagnosed in 10 captive snakes from the Bothrops genus. The most frequent changes were emaciation (8/10), fibrinonecrotic or granulomatous hepatitis (8/9), fibrinonecrotic or granulomatous enterocolitis (8/9), necrotic and heterophilic myocarditis (2/10), fibrinonecrotic or granulomatous pancreatitis (2/5), fibrinoheterophilic osteomyelitis (1/10), fibrinous and pyogranulomatous pericarditis (1/10) and granulomatous splenitis (1/6). Salmonella enterica was isolated from six cases. The subspecies identified were arizonae (3/6), diarizonae (1/6) and houtenae (1/6), in addition to the serotype Typhimurium (1/6). In cases without isolation, there was immunolabelling of Salmonella spp. in intestinal (3/4), hepatic (1/4) and cardiac (1/4) lesions.
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Affiliation(s)
- Marianna Bertolini
- Setor de Patologia Veterinária, , Departamento de Patologia Clínica Veterinária, Faculdade de Veterinária, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Claiton I Schwertz
- Setor de Patologia Veterinária, , Departamento de Patologia Clínica Veterinária, Faculdade de Veterinária, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Andréia Vielmo
- Setor de Patologia Veterinária, , Departamento de Patologia Clínica Veterinária, Faculdade de Veterinária, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Manoela M Piva
- Setor de Patologia Veterinária, , Departamento de Patologia Clínica Veterinária, Faculdade de Veterinária, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Lina C Bilhalva
- Laboratório de Análises Clínicas Veterinárias, Departamento de Patologia Clínica Veterinária, Faculdade de Veterinária, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Saulo P Pavarini
- Setor de Patologia Veterinária, , Departamento de Patologia Clínica Veterinária, Faculdade de Veterinária, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - David Driemeier
- Setor de Patologia Veterinária, , Departamento de Patologia Clínica Veterinária, Faculdade de Veterinária, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Luciana Sonne
- Setor de Patologia Veterinária, , Departamento de Patologia Clínica Veterinária, Faculdade de Veterinária, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil.
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14
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Studer K, Di Girolamo N. Respiratory Disorders in Chelonians. Vet Clin North Am Exot Anim Pract 2021; 24:341-367. [PMID: 33892891 DOI: 10.1016/j.cvex.2021.01.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
"Respiratory tract disease in chelonians can be difficult to treat and as such proper diagnostics are paramount. Infectious agents that can affect the respiratory tract of chelonians include viral, bacterial, fungal, and parasitic organisms. Noninfectious diseases can also develop. Because chelonians lack a proper diaphragm, changes in size of celomic organs can cause compression of the respiratory system. These conditions result in clinical signs that could be attributed to the respiratory system, such as open-mouth breathing. In this article, anatomy, physiology, and current standards for diagnostics and treatments of major diseases of the respiratory tract in chelonians are discussed."
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Affiliation(s)
- Kelsea Studer
- Oklahoma State University, Center for Veterinary Health Sciences, 2065 West Farm Road, Stillwater, OK 74078, USA
| | - Nicola Di Girolamo
- Oklahoma State University, Center for Veterinary Health Sciences, 2065 West Farm Road, Stillwater, OK 74078, USA.
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15
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Inchuai R, Weerakun S, Nguyen HN, Sukon P. Global Prevalence of Chlamydial Infections in Reptiles: A Systematic Review and Meta-Analysis. Vector Borne Zoonotic Dis 2020; 21:32-39. [PMID: 32990530 DOI: 10.1089/vbz.2020.2654] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Background and Objectives: Chlamydia spp. are potential zoonotic pathogens that can infect a wide range of animal hosts. In reptiles, Chlamydia can cause hepatitis, pneumonitis, and conjunctivitis and it can cause high mortality in young animals. The objectives of this study were to estimate the pooled prevalence of chlamydial infections in reptiles and to assess the trend of these infections over time. Materials and Methods: The study followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. Relevant studies were retrieved from PubMed, Scopus, and Web of Science. The retrieved studies were screened for eligibility. Then, important data were extracted from the included studies. A random effects model was used for all analyses. Subgroup analysis was used to assess heterogeneity for orders of reptiles, continents where the studies were conducted, and types of specimens. Cumulative meta-analysis and meta-regression were used to determine the trend of the prevalence over time. The quality of each included study was evaluated. Results: Of 106 studies (with a total of 2607 samples), 20 met the inclusion criteria and were included in the meta-analysis. The pooled prevalence of chlamydial infections in reptiles was 23.5% (95% confidence interval [CI]: 15.4-34.0). The trend of chlamydial infections increased from 1990 to 2008; thereafter, it was almost stable at slightly over 20%. The most commonly reported Chlamydia spp. were Chlamydia psittaci, Chlamydia pneumoniae, Chlamydia pecorum, and Chlamydia caviae. Among reptiles, the prevalence of chlamydial infections was highest in crocodiles (57.3% [95% CI: 32.5-78.9]). Among continents, the prevalence of chlamydial infections was highest in Australia (68.6% [95% CI: 36.8-89.1]). Conclusions: Based on the included studies, the prevalence of chlamydial infections in reptiles was high, especially in crocodiles. Because C. psittaci and C. pneumoniae are commonly found in reptiles and are well-known zoonotic pathogens, they should be of concern for human health.
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Affiliation(s)
- Rawikan Inchuai
- Faculty of Veterinary Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - Sompoth Weerakun
- Faculty of Veterinary Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - Hoai Nam Nguyen
- Faculty of Veterinary Medicine, Vietnam National University of Agriculture, Hanoi, Vietnam
| | - Peerapol Sukon
- Faculty of Veterinary Medicine, Khon Kaen University, Khon Kaen, Thailand.,Research Group for Animal Health Technology, Khon Kaen University, Khon Kaen, Thailand
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16
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Mycobacteriosis and Infections with Non-tuberculous Mycobacteria in Aquatic Organisms: A Review. Microorganisms 2020; 8:microorganisms8091368. [PMID: 32906655 PMCID: PMC7564596 DOI: 10.3390/microorganisms8091368] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 09/02/2020] [Accepted: 09/04/2020] [Indexed: 12/19/2022] Open
Abstract
The Mycobacteriaceae constitute a family of varied Gram-positive organisms that include a large number of pathogenic bacteria. Among these, non-tuberculous mycobacteria are endemic worldwide and have been associated with infections in a large number of organisms, including humans and other mammals and reptiles, as well as fish. In this review, we summarize the most recent findings regarding this group of pathogens in fish. There, four species are most commonly associated with disease outbreaks: Mycobacterium marinum, the most common of these fish mycobacterial pathogens, Mycobacterium fortuitum, Mycobacterium gordonae, and Mycobacterium chelonae. These bacteria have a broad host range: they are zoonotic, and infections have been reported in a large number of fish species. The main route of entry of the bacterium into the fish is through the gastrointestinal route, and the disease is associated with ulcerative dermatitis as well as organomegaly and the development of granulomatous lesions in the internal organs. Mycobacteriaceae are slow-growing and fastidious and isolation is difficult and time consuming and diagnostic is mostly performed using serological and molecular tools. Control of the disease is also difficult: there is currently no effective vaccine and infections react poorly to antibiotherapy. For this reason, more research is needed on the subject of these vexing pathogens.
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17
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Muro J, Canturri A, Velarde R, Martínez-Silvestre A, Pastor J, Lavín S, Marco I. Atypical systemic mycobacteriosis in Hermann's tortoises (Testudo hermanni). J Exot Pet Med 2020. [DOI: 10.1053/j.jepm.2019.11.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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18
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Goławska O, Zając M, Wasyl D, Demkowska-Kutrzepa M, Borzym E, Różański P, Rzeżutka A. MICROFLORA AND PARASITOFAUNA OF ALIEN AND INVASIVE TURTLE SPECIES. ADVANCEMENTS OF MICROBIOLOGY 2019. [DOI: 10.21307/pm-2017.56.2.163] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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19
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Vajana E, Widmer I, Rochat E, Duruz S, Selmoni O, Vuilleumier S, Aeby S, Greub G, Joost S. Indication of spatially random occurrence of Chlamydia-like organisms in Bufo bufo tadpoles from ponds located in the Geneva metropolitan area. New Microbes New Infect 2018; 27:54-63. [PMID: 30622711 PMCID: PMC6307092 DOI: 10.1016/j.nmni.2018.11.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Revised: 11/19/2018] [Accepted: 11/20/2018] [Indexed: 11/12/2022] Open
Abstract
Occurrence of bacteria belonging to the order Chlamydiales was investigated for the first time in common toad (Bufo bufo) tadpole populations collected from 41 ponds in the Geneva metropolitan area, Switzerland. A Chlamydiales-specific real-time PCR was used to detect and amplify the Chlamydiales 16S ribosomal RNA–encoding gene from the tails of 375 tadpoles. We found the studied amphibian populations to host Chlamydia-like organisms (CLOs) attributable to the genera Similichlamydia, Neochlamydia, Protochlamydia and Parachlamydia (all belonging to the family Parachlamydiaceae), Simkania (family Simkaniaceae) and Estrella (family Criblamydiaceae); additionally, DNA from the genus Thermoanaerobacter (family Thermoanaerobacteriaceae) was detected. Global autocorrelation analysis did not reveal a spatial structure in the observed CLOs occurrence rates, and association tests involving land cover characteristics did not evidence any clear effect on CLOs occurrence rates in B. bufo. Although preliminary, these results suggest a random and ubiquitous distribution of CLOs in the environment, which would support the biogeographical expectation ‘everything is everywhere’ for the concerned microorganisms.
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Affiliation(s)
- E Vajana
- Laboratory of Geographic Information Systems (LASIG), School of Architecture, Civil and Environmental Engineering (ENAC), École Polytechnique Fédérale de Lausanne (EPFL), Switzerland
| | - I Widmer
- Laboratory of Geographic Information Systems (LASIG), School of Architecture, Civil and Environmental Engineering (ENAC), École Polytechnique Fédérale de Lausanne (EPFL), Switzerland.,Swiss Academy of Sciences SCNAT, Swiss Biodiversity Forum, Bern, Switzerland
| | - E Rochat
- Laboratory of Geographic Information Systems (LASIG), School of Architecture, Civil and Environmental Engineering (ENAC), École Polytechnique Fédérale de Lausanne (EPFL), Switzerland
| | - S Duruz
- Laboratory of Geographic Information Systems (LASIG), School of Architecture, Civil and Environmental Engineering (ENAC), École Polytechnique Fédérale de Lausanne (EPFL), Switzerland
| | - O Selmoni
- Laboratory of Geographic Information Systems (LASIG), School of Architecture, Civil and Environmental Engineering (ENAC), École Polytechnique Fédérale de Lausanne (EPFL), Switzerland
| | - S Vuilleumier
- La Source, School of Nursing, University of Applied Sciences and Arts Western Switzerland (HES-SO), Switzerland
| | - S Aeby
- Institute of Microbiology, University of Lausanne and University Hospital Center, Switzerland
| | - G Greub
- Institute of Microbiology, University of Lausanne and University Hospital Center, Switzerland
| | - S Joost
- Laboratory of Geographic Information Systems (LASIG), School of Architecture, Civil and Environmental Engineering (ENAC), École Polytechnique Fédérale de Lausanne (EPFL), Switzerland.,Unit of Population Epidemiology, Division of Primary Care Medicine, Department of Community Medicine, Primary Care and Emergency Medicine, Geneva University Hospitals, Switzerland.,Institute of Social and Preventive Medicine, Lausanne University Hospital, Lausanne, Switzerland
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20
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Novel Chlamydia species isolated from snakes are temperature-sensitive and exhibit decreased susceptibility to azithromycin. Sci Rep 2018; 8:5660. [PMID: 29618824 PMCID: PMC5884828 DOI: 10.1038/s41598-018-23897-z] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Accepted: 03/22/2018] [Indexed: 11/09/2022] Open
Abstract
Chlamydia species have recently been recognized as emerging pathogens in snakes. However, isolation of novel snake chlamydiae is critical and their growth characteristics are largely unknown. In this study, two novel chlamydial species are described: Chlamydia serpentis and Chlamydia poikilothermis, isolated after attempts on 23 cloacal and choanal swabs from 18 PCR-positive captive snakes originating from different Swiss snake collections. Isolation success, growth curve and infectivity rates over a 48-hour time period were dependent on temperature (37 °C for C. serpentis, 28 °C for C. poikilothermis). C. serpentis and C. poikilothermis were sensitive to tetracycline and moxifloxacin during evaluation by in vitro antibiotic susceptibility assay but intermediate to resistant (2–4 μg/ml) to azithromycin. Whole genome sequencing of the isolates provided proof of the novel species status, and gives insights into the evolution of these branches of genus Chlamydia.
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21
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Sood N, Pradhan PK, Verma DK, Yadav MK, Dev AK, Swaminathan TR, Sood NK. Candidatus Actinochlamydia pangasiae sp. nov. (Chlamydiales, Actinochlamydiaceae), a bacterium associated with epitheliocystis in Pangasianodon hypophthalmus. JOURNAL OF FISH DISEASES 2018; 41:281-290. [PMID: 28940578 DOI: 10.1111/jfd.12711] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2017] [Revised: 08/01/2017] [Accepted: 08/02/2017] [Indexed: 06/07/2023]
Abstract
Chlamydial infections are recognised as causative agent of epitheliocystis, reported from over 90 fish species. In the present study, the farmed striped catfish Pangasianodon hypophthalmus (14-15 cm, 70-90 g) with a history of cumulative mortality of about 23% during June and July 2015, were brought to the laboratory. The histopathological examination of gills from the affected fish revealed presence of granular basophilic intracellular inclusions, mostly at the base of the interlamellar region and in gill filaments. A concurrent infection with Trichodina spp., Ichthyobodo spp. and Dactylogyrus spp. was observed in the gills. The presence of chlamydial DNA in the gills of affected fish was confirmed by amplification and sequencing of 16S rRNA gene. BLAST-n analysis of these amplicons revealed maximum similarity (96%) with Candidatus Actinochlamydia clariae. On the basis of phylogenetic analysis, it was inferred that the epitheliocystis agents from striped catfish were novel and belonged to the taxon Ca. Actinochlamydia. It is proposed that epitheliocystis agents from striped catfish will be named as Ca. Actinochlamydia pangasiae. The 16S rRNA gene amplicons from novel chlamydiae were labelled and linked to inclusions by in situ hybridisation. This is the first report of epitheliocystis from India in a new fish host P. hypophthalmus.
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Affiliation(s)
- N Sood
- ICAR-National Bureau of Fish Genetic Resources, Lucknow, Uttar Pradesh, India
| | - P K Pradhan
- ICAR-National Bureau of Fish Genetic Resources, Lucknow, Uttar Pradesh, India
| | - D K Verma
- ICAR-National Bureau of Fish Genetic Resources, Lucknow, Uttar Pradesh, India
| | - M K Yadav
- ICAR-National Bureau of Fish Genetic Resources, Lucknow, Uttar Pradesh, India
| | - A K Dev
- ICAR-National Bureau of Fish Genetic Resources, Lucknow, Uttar Pradesh, India
| | - T R Swaminathan
- Peninsular and Marine Fish Genetic Resources Centre, ICAR-NBFGR, Kochi, Kerala
| | - N K Sood
- Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana, Punjab, India
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22
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Borel N, Polkinghorne A, Pospischil A. A Review on Chlamydial Diseases in Animals: Still a Challenge for Pathologists? Vet Pathol 2018; 55:374-390. [PMID: 29310550 DOI: 10.1177/0300985817751218] [Citation(s) in RCA: 85] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Chlamydiae have a worldwide distribution causing a wide range of diseases in human hosts, livestock, and companion animals as well as in wildlife and exotic species. Moreover, they can persist in their hosts as asymptomatic infections for extended periods of time. The introduction of molecular techniques has revolutionized the Chlamydia field by expanding the host range of known chlamydial species but also by discovering new species and even new families of bacteria in the broader order Chlamydiales. The wide range of hosts, diseases, and tissues affected by chlamydiae complicate the diagnosis such that standard diagnostic approaches for these bacteria are rare. Bacteria of the Chlamydiales order are small and their inclusions are difficult to detect by standard microscopy. With the exception of avian and ovine chlamydiosis, macroscopic and/or histologic changes might not be pathognomic or indicative for a chlamydial infection or even not present at all. Moreover, detection of chlamydial DNA in specimens in the absence of other methods or related pathological lesions questions the significance of such findings. The pathogenic potential of the majority of recently identified Chlamydia-related bacteria remains largely unknown and awaits investigation through experimental or natural infection models including histomorphological characterization of associated lesions. This review aims to summarize the historical background and the most important developments in the field of animal chlamydial research in the past 5 years with a special focus on pathology. It will summarize the current nomenclature, present critical thoughts about diagnostics, and give an update on chlamydial infections in domesticated animals such as livestock, companion animals and birds, as well as free-ranging and captive wild animals such as reptiles, fish, and marsupials.
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Affiliation(s)
- Nicole Borel
- 1 Department of Pathobiology, Institute of Veterinary Pathology, University of Zurich, Zurich, Switzerland
| | - Adam Polkinghorne
- 2 Centre for Animal Health Innovation, Faculty of Science, Health, Education and Engineering, University of the Sunshine Coast, Sippy Downs, Australia
| | - Andreas Pospischil
- 1 Department of Pathobiology, Institute of Veterinary Pathology, University of Zurich, Zurich, Switzerland
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23
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Free-living and captive turtles and tortoises as carriers of new Chlamydia spp. PLoS One 2017; 12:e0185407. [PMID: 28950002 PMCID: PMC5614609 DOI: 10.1371/journal.pone.0185407] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Accepted: 09/12/2017] [Indexed: 11/19/2022] Open
Abstract
A variety of Chlamydia species belonging to the Chlamydiaceae family have been reported in reptilian hosts but scarce data about their occurrence in turtles and tortoises are available. In this study, research was conducted to acquire information on invasive alien species (IAS) of turtles and indigenous turtles and tortoises, living both free and in captivity, as possible reservoirs of Chlamydiaceae. Analysis of specimens (pharyngeal and cloacal swabs and tissues) from 204 turtles and tortoises revealed an overall Chlamydiaceae prevalence of 18.3% and 28.6% among free-living and captive animals respectively, with variable levels of shedding. Further testing conducted with a species-specific real-time PCR and microarray test was unsuccessful. Subsequently sequencing was applied to genotype the Chlamydiaceae-positive samples. Almost the full lengths of the 16S rRNA and ompA genes as well as the 16S-23S intergenic spacer (IGS) and 23S rRNA domain I were obtained for 14, 20 and 8 specimens respectively. Phylogenetic analysis of 16S rRNA amplicons revealed two distinct branches. Group 1 (10 specimens), specific to freshwater turtles and reported here for the first time, was most closely related to Chlamydia (C.) pneumoniae strains and the newly described Candidatus C. sanzinia. Group 2 (four specimens), detected in Testudo spp. samples, showed highest homology to C. pecorum strains but formed a separate sub-branch. Finally, molecular analysis conducted on positive samples together with their geographical distribution in places distant from each other strongly suggest that Group 1 specimens correspond to a new species in the Chlamydiaceae family. In-depth studies of Chlamydia spp. from turtles and tortoises are needed to further characterise these atypical strains and address arising questions about their pathogenicity and zoonotic potential.
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24
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Taylor-Brown A, Spang L, Borel N, Polkinghorne A. Culture-independent metagenomics supports discovery of uncultivable bacteria within the genus Chlamydia. Sci Rep 2017; 7:10661. [PMID: 28878306 PMCID: PMC5587560 DOI: 10.1038/s41598-017-10757-5] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Accepted: 08/14/2017] [Indexed: 12/02/2022] Open
Abstract
Advances in culture-independent methods have meant that we can more readily detect and diagnose emerging infectious disease threats in humans and animals. Metagenomics is fast becoming a popular tool for detection and characterisation of novel bacterial pathogens in their environment, and is particularly useful for obligate intracellular bacteria such as Chlamydiae that require labour-intensive culturing. We have used this tool to investigate the microbial metagenomes of Chlamydia-positive cloaca and choana samples from snakes. The microbial complexity within these anatomical sites meant that despite previous detection of chlamydial 16S rRNA sequences by single-gene broad-range PCR, only a chlamydial plasmid could be detected in all samples, and a chlamydial chromosome in one sample. Comparative genomic analysis of the latter revealed it represented a novel taxon, Ca. Chlamydia corallus, with genetic differences in regards to purine and pyrimidine metabolism. Utilising statistical methods to relate plasmid phylogeny to the phylogeny of chromosomal sequences showed that the samples also contain additional novel strains of Ca. C. corallus and two putative novel species in the genus Chlamydia. This study highlights the value of metagenomics methods for rapid novel bacterial discovery and the insights it can provide into the biology of uncultivable intracellular bacteria such as Chlamydiae.
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Affiliation(s)
- Alyce Taylor-Brown
- Centre for Animal Health Innovation, Faculty of Science, Health, Engineering and Education, University of the Sunshine Coast, Sippy Downs, Queensland, Australia
| | - Labolina Spang
- Centre for Animal Health Innovation, Faculty of Science, Health, Engineering and Education, University of the Sunshine Coast, Sippy Downs, Queensland, Australia
| | - Nicole Borel
- Institute of Veterinary Pathology, University of Zurich, Zurich, CH-8057, Switzerland
| | - Adam Polkinghorne
- Centre for Animal Health Innovation, Faculty of Science, Health, Engineering and Education, University of the Sunshine Coast, Sippy Downs, Queensland, Australia.
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25
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GRANULOMATOUS ENCEPHALOMYELITIS IN A FALSE GHARIAL (TOMISTOMA SCHLEGELII) ASSOCIATED WITH A NOVEL CHLAMYDIA SPECIES. J Zoo Wildl Med 2017; 48:563-567. [PMID: 28749290 DOI: 10.1638/2016-0187r.1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A 5-yr-old, captive, hatched, female false gharial (Tomistoma schlegelii) presented with a 1-mo history of cervical spinal curvature. Antemortem diagnostics, including blood work, electromyography, muscle biopsies, and advanced imaging tests, were either within reference ranges or did not identify any specific etiology. Necropsy revealed extensive, marked, chronic granulomatous encephalomyelitis along with neuronal necrosis, rarefaction, gliosis, and astrocytosis of the white and gray matter of the cerebrum, cerebellum, brainstem, and spinal cord. Pan-chlamydiae polymerase chain reaction protocols for the 16S ribosomal RNA and ompA genes were performed on samples of spinal cord and brain, and both resulted in amplicons. Sequencing of the products revealed that they were positive for a novel Chlamydia species. Infections by members of the phylum Chlamydiae have been reported in a diverse range of vertebrate hosts, including crocodilians. Chlamydia spp. infections are likely underdiagnosed because of a paucity of diagnostic techniques specific for detection. This is the first case report of a novel Chlamydia species associated with severe granulomatous encephalomyelitis in a false gharial.
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26
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Ebani VV. Domestic reptiles as source of zoonotic bacteria: A mini review. ASIAN PAC J TROP MED 2017; 10:723-728. [PMID: 28942820 DOI: 10.1016/j.apjtm.2017.07.020] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Revised: 06/12/2017] [Accepted: 07/18/2017] [Indexed: 10/19/2022] Open
Abstract
Captive reptiles, always more often present in domestic environment as pets, may harbor and excrete a large variety of zoonotic pathogens. Among them, Salmonella is the most well-known agent, whereas there are very scant data about infections by mycobacteria, chlamydiae and leptospirae in cold-blooded animals. However, the investigations that found antibody reactions and/or the bacteria in samples collected from free-ranging and captive reptiles show that herpetofauna may be involved in the epidemiology of these infections. The present review reports the updated knowledge about salmonellosis, mycobacteriosis, chlamydiosis and leptospirosis in reptiles and underlines the risk of infection to which people, mainly children, are exposed.
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27
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Nontuberculous mycobacteria in captive and pet reptiles. ACTA VET BRNO 2017. [DOI: 10.2754/avb201786010101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The aim of this study was to highlight the importance of nontuberculous mycobacteria species in the pathology of various reptilian pet species as well as their epidemiological significance of infection transmission to humans. Faeces samples from six living reptiles and organs from ten carcasses were submitted to bacteriological testing during the years 2003–2015. Positive colonies from one faeces sample and two organs showed the presence of a gene coding 65kDa antigen common for all mycobacteria. Further identification to the species level revealed that the isolates belong toMycobacterium fortuitumandMycobacterium aviumsubsp.hominissuis, later subjected to drug susceptibility testing which confirmed high resistance levels in both isolates. In conclusion, there is a great significance of the occurrence of nontuberculous mycobacteria in captive and pet reptiles, presenting reptiles as possible hosts representing a serious threat of transmission of high resistance mycobacterial isolates to humans. To our knowledge, this is the first report ofM. aviumsubsp.hominissuisoccurrence in reptiles.
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Vouga M, Baud D, Greub G. Simkania negevensis, an insight into the biology and clinical importance of a novel member of the Chlamydiales order. Crit Rev Microbiol 2016; 43:62-80. [PMID: 27786615 DOI: 10.3109/1040841x.2016.1165650] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Simkania negevensis is a Chlamydia-related bacterium discovered in 1993 and represents the founding member of the Simkaniaceae family within the Chlamydiales order. As other Chlamydiales, it is an obligate intracellular bacterium characterized by a biphasic developmental cycle. Its similarities with the pathogenic Chlamydia trachomatis and Chlamydia pneumoniae make it an interesting bacterium. So far, little is known about its biology, but S. negevensis harbors various microbiological characteristics of interest, including a strong association of the Simkania-containing vacuole with the ER and the presence of an intron in the 23S rRNA encoding gene. Evidence of human exposition has been reported worldwide. However, there is a lack of robust clinical studies evaluating its implication in human diseases; current data suggest an association with pneumonia and bronchiolitis making S. negevensis a potential emerging pathogen. Owing to its fastidious growth requirements, the clinical relevance of S. negevensis is probably underestimated. In this review, we summarize the current knowledge on S. negevensis and explore future research challenges.
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Affiliation(s)
- Manon Vouga
- a Institute of Microbiology , Center for Research on Intracellular Bacteria, Faculty of Biology and Medicine, University and University Hospital of Lausanne , Lausanne , Switzerland.,b Department "Femme-Mère-Enfant" , Materno-Fetal and Obstetrics Research Unit, University Hospital , Lausanne , Switzerland
| | - David Baud
- a Institute of Microbiology , Center for Research on Intracellular Bacteria, Faculty of Biology and Medicine, University and University Hospital of Lausanne , Lausanne , Switzerland.,b Department "Femme-Mère-Enfant" , Materno-Fetal and Obstetrics Research Unit, University Hospital , Lausanne , Switzerland
| | - Gilbert Greub
- a Institute of Microbiology , Center for Research on Intracellular Bacteria, Faculty of Biology and Medicine, University and University Hospital of Lausanne , Lausanne , Switzerland.,c Infectious Diseases Unit , University hospital , Lausanne , Switzerland
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Ullmann LS, das Neves Dias-Neto R, Cagnini DQ, Yamatogi RS, Oliveira-Filho JP, Nemer V, Teixeira RHF, Biondo AW, Araújo JP. Mycobacterium genavense infection in two species of captive snakes. J Venom Anim Toxins Incl Trop Dis 2016; 22:27. [PMID: 27777582 PMCID: PMC5070184 DOI: 10.1186/s40409-016-0082-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2016] [Accepted: 09/10/2016] [Indexed: 11/11/2022] Open
Abstract
Background Mycobacterium is an important zoonotic agent with companion, livestock and wildlife animals reportedly playing a role as reservoirs. Although its association with reptiles has been described, the disease cycle remains to be fully established, particularly in snakes. Accordingly, this study aimed to report the occurrence of mycobacteriosis with clinical pneumonia in one exotic python snake (Python molurus) and one native green snake (Philodryas olfersii) from the Sorocaba Zoo, São Paulo state, Brazil. Methods Diagnosis was based on necropsy, histopathological examination, Ziehl-Neelsen stain and immunohistochemistry. Results Using a nested PCR followed by DNA sequencing and bioinformatics analysis, the causative Mycobacterium species was identified as Mycobacterium genavense. Conclusion Mycobacterium genavense is an infectious zoonotic agent of animal and public health concerns.
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Affiliation(s)
- Leila Sabrina Ullmann
- Department of Microbiology and Immunology, Botucatu Biosciences Institute, São Paulo State University (UNESP - Univ Estadual Paulista), Distrito de Rubião Junior, s/n, Botucatu, SP 80035-050 Brazil
| | | | - Didier Quevedo Cagnini
- Department of Clinical Veterinary Medicine, School of Veterinary Medicine and Animal Husbandry, São Paulo State University (UNESP - Univ Estadual Paulista), Botucatu, SP Brazil
| | | | - Jose Paes Oliveira-Filho
- Department of Clinical Veterinary Medicine, School of Veterinary Medicine and Animal Husbandry, São Paulo State University (UNESP - Univ Estadual Paulista), Botucatu, SP Brazil
| | - Viviane Nemer
- Department of Veterinary Medicine, Federal University of Paraná, Curitiba, Brazil
| | | | - Alexander Welker Biondo
- Department of Microbiology and Immunology, Botucatu Biosciences Institute, São Paulo State University (UNESP - Univ Estadual Paulista), Distrito de Rubião Junior, s/n, Botucatu, SP 80035-050 Brazil
| | - João Pessoa Araújo
- Department of Microbiology and Immunology, Botucatu Biosciences Institute, São Paulo State University (UNESP - Univ Estadual Paulista), Distrito de Rubião Junior, s/n, Botucatu, SP 80035-050 Brazil
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Culture-independent genomic characterisation of Candidatus Chlamydia sanzinia, a novel uncultivated bacterium infecting snakes. BMC Genomics 2016; 17:710. [PMID: 27595750 PMCID: PMC5011893 DOI: 10.1186/s12864-016-3055-x] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Accepted: 08/27/2016] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Recent molecular studies have revealed considerably more diversity in the phylum Chlamydiae than was previously thought. Evidence is growing that many of these novel chlamydiae may be important pathogens in humans and animals. A significant barrier to characterising these novel chlamydiae is the requirement for culturing. We recently identified a range of novel uncultured chlamydiae in captive snakes in Switzerland, however, nothing is known about their biology. Using a metagenomics approach, the aim of this study was to characterise the genome of a novel chlamydial taxon from the choana of a captive snake. In doing so, we propose a new candidate species in the genus Chlamydia (Candidatus Chlamydia sanzinia) and reveal new information about the biological diversity of this important group of pathogens. RESULTS We identified two chlamydial genomic contigs: a 1,113,073 bp contig, and a 7,504 bp contig, representing the chromosome and plasmid of Ca. Chlamydia sanzinia strain 2742-308, respectively. The 998 predicted coding regions include an expanded repertoire of outer membrane proteins (Pmps and Omps), some of which exhibited frameshift mutations, as well as several chlamydial virulence factors such as the translocating actin-recruitment phosphoprotein (Tarp) and macrophage inhibition potentiator (Mip). A suite of putative inclusion membrane proteins were also predicted. Notably, no evidence of a traditional chlamydial plasticity zone was identified. Phylogenetically, Ca. Chlamydia sanzinia forms a clade with C. pneumoniae and C. pecorum, distinct from former "Chlamydophila" species. CONCLUSIONS Genomic characterisation of a novel uncultured chlamydiae from the first reptilian host has expanded our understanding of the diversity and biology of a genus that was thought to be the most well-characterised in this unique phylum. It is anticipated that this method will be suitable for characterisation of other novel chlamydiae.
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Frutos MC, Monetti MS, Vaulet LG, Cadario ME, Fermepin MR, Ré VE, Cuffini CG. Genetic diversity of Chlamydia among captive birds from central Argentina. Avian Pathol 2015; 44:50-6. [PMID: 25469538 DOI: 10.1080/03079457.2014.993593] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
To study the occurrence of Chlamydia spp. and their genetic diversity, we analysed 793 cloacal swabs from 12 avian orders, including 76 genera, obtained from 80 species of asymptomatic wild and captive birds that were examined with conventional nested polymerase chain reaction and quantitative polymerase chain reaction. Chlamydia spp. were not detected in wild birds; however, four species (Chlamydia psittaci, Chlamydia pecorum, Chlamydia pneumoniae and Chlamydia gallinacea) were identified among captive birds (Passeriformes, n = 20; Psittaciformes, n = 15; Rheiformes, n = 8; Falconiformes n = 2; Piciformes n = 2; Anseriformes n = 1; Galliformes n = 1; Strigiformes n = 1). Two pathogens (C. pneumoniae and C. pecorum) were identified simultaneously in samples obtained from captive birds. Based on nucleotide-sequence variations of the ompA gene, three C. psittaci-positive samples detected were grouped into a cluster with the genotype WC derived from mammalian hosts. A single positive sample was phylogenetically related to a new strain of C. gallinacea. This report contributes to our increasing understanding of the abundance of Chlamydia in the animal kingdom.
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Affiliation(s)
- María C Frutos
- a Instituto de Virología "Dr. J. M. Vanella", Facultad de Ciencias Médicas , Universidad Nacional de Córdoba , Córdoba , Argentina
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Herweg JA, Hansmeier N, Otto A, Geffken AC, Subbarayal P, Prusty BK, Becher D, Hensel M, Schaible UE, Rudel T, Hilbi H. Purification and proteomics of pathogen-modified vacuoles and membranes. Front Cell Infect Microbiol 2015; 5:48. [PMID: 26082896 PMCID: PMC4451638 DOI: 10.3389/fcimb.2015.00048] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2015] [Accepted: 05/14/2015] [Indexed: 01/08/2023] Open
Abstract
Certain pathogenic bacteria adopt an intracellular lifestyle and proliferate in eukaryotic host cells. The intracellular niche protects the bacteria from cellular and humoral components of the mammalian immune system, and at the same time, allows the bacteria to gain access to otherwise restricted nutrient sources. Yet, intracellular protection and access to nutrients comes with a price, i.e., the bacteria need to overcome cell-autonomous defense mechanisms, such as the bactericidal endocytic pathway. While a few bacteria rupture the early phagosome and escape into the host cytoplasm, most intracellular pathogens form a distinct, degradation-resistant and replication-permissive membranous compartment. Intracellular bacteria that form unique pathogen vacuoles include Legionella, Mycobacterium, Chlamydia, Simkania, and Salmonella species. In order to understand the formation of these pathogen niches on a global scale and in a comprehensive and quantitative manner, an inventory of compartment-associated host factors is required. To this end, the intact pathogen compartments need to be isolated, purified and biochemically characterized. Here, we review recent progress on the isolation and purification of pathogen-modified vacuoles and membranes, as well as their proteomic characterization by mass spectrometry and different validation approaches. These studies provide the basis for further investigations on the specific mechanisms of pathogen-driven compartment formation.
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Affiliation(s)
- Jo-Ana Herweg
- Chair of Microbiology, Biocenter, University of Würzburg Würzburg, Germany
| | - Nicole Hansmeier
- Division of Microbiology, University of Osnabrück Osnabrück, Germany
| | - Andreas Otto
- Institute of Microbiology, Ernst-Moritz-Arndt University Greifswald Greifswald, Germany
| | - Anna C Geffken
- Priority Area Infections, Cellular Microbiology, Research Center Borstel, Leibniz Center for Medicine and Biosciences Borstel, Germany
| | - Prema Subbarayal
- Chair of Microbiology, Biocenter, University of Würzburg Würzburg, Germany
| | - Bhupesh K Prusty
- Chair of Microbiology, Biocenter, University of Würzburg Würzburg, Germany
| | - Dörte Becher
- Institute of Microbiology, Ernst-Moritz-Arndt University Greifswald Greifswald, Germany
| | - Michael Hensel
- Division of Microbiology, University of Osnabrück Osnabrück, Germany
| | - Ulrich E Schaible
- Priority Area Infections, Cellular Microbiology, Research Center Borstel, Leibniz Center for Medicine and Biosciences Borstel, Germany
| | - Thomas Rudel
- Chair of Microbiology, Biocenter, University of Würzburg Würzburg, Germany
| | - Hubert Hilbi
- Department of Medicine, Max von Pettenkofer Institute, Ludwig-Maximilians University Munich Munich, Germany ; Department of Medicine, Institute of Medical Microbiology, University of Zürich Zürich, Switzerland
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Rüegg SR, Regenscheit N, Origgi FC, Kaiser C, Borel N. Detection of Chlamydia pneumoniae in a collection of captive snakes and response to treatment with marbofloxacin. Vet J 2015; 205:424-6. [PMID: 26049258 DOI: 10.1016/j.tvjl.2015.05.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2014] [Revised: 05/04/2015] [Accepted: 05/09/2015] [Indexed: 11/28/2022]
Abstract
In a collection of 58 snakes comprising predominantly Eurasian vipers in Switzerland, five snakes died unexpectedly during hibernation from 2009 to 2012. In one snake, organisms resembling chlamydiae were detected by immunohistochemistry in multiple histiocytic granulomas. Real-time quantitative PCR and microarray analysis were used to determine the presence of Chlamydia pneumoniae in tissue samples and cloacal/choanal swabs from snakes in the collection; 8/53 (15.1%) of the remaining snakes were positive. Although one infected snake had suppurative periglossitis, infection with C. pneumoniae did not appear to be associated with specific clinical signs in snakes. Of seven snakes treated with 5 mg/kg marbofloxacin IM once daily, five became PCR negative for C. pneumoniae following treatment, whereas one animal remained positive and one snake was lost to follow-up.
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Affiliation(s)
- S R Rüegg
- Section of Veterinary Epidemiology, Vetsuisse Faculty, University of Zürich, Winterthurerstrasse 270, 8057 Zürich, Switzerland.
| | - N Regenscheit
- Institute of Animal Pathology, Vetsuisse Faculty, University of Bern, Länggassstrasse 122, 3012 Bern, Switzerland
| | - F C Origgi
- Centre of Fish and Wildlife Health, Vetsuisse Faculty, University of Bern, Länggassstrasse 122, 3012 Bern, Switzerland
| | - C Kaiser
- Institute of Veterinary Pathology, Vetsuisse Faculty, University of Zürich, Winterthurerstrasse 268, 8057 Zürich, Switzerland
| | - N Borel
- Institute of Veterinary Pathology, Vetsuisse Faculty, University of Zürich, Winterthurerstrasse 268, 8057 Zürich, Switzerland
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Taylor-Brown A, Rüegg S, Polkinghorne A, Borel N. Characterisation of Chlamydia pneumoniae and other novel chlamydial infections in captive snakes. Vet Microbiol 2015; 178:88-93. [PMID: 25944652 DOI: 10.1016/j.vetmic.2015.04.021] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2015] [Revised: 04/23/2015] [Accepted: 04/27/2015] [Indexed: 11/17/2022]
Abstract
Chlamydiosis has been described in both free-ranging and captive reptiles. The infection usually manifests as granulomatous inflammation in inner organs such as spleen, heart, lung and liver but might also occur in asymptomatic reptiles. The aim of this study was to investigate and characterise Chlamydia pneumoniae and potential other novel chlamydial infections in the choana and cloaca samples of 137 clinically healthy captive snakes from six private collections. Forty eight samples from 29 animals were found to be positive by a Chlamydiaceae family-specific qPCR. By Chlamydia species-specific ArrayTube Microarray, 43 samples were positive, with 36 of these being identified as C. pneumoniae. The prevalence of Chlamydia ranged from 5 to 33%. PCR and sequencing of the Chlamydiales 16S rRNA signature sequence of 21 Chlamydia positive samples revealed the presence of seven novel 16S rRNA genotypes. BLAST-n and phylogenetic analysis of the near-full length 16S rRNA gene sequence of each of these novel 16S rRNA sequences revealed that five genotypes share closest sequence identity to 16S rRNA sequences from C. pneumoniae (98.6-99.2%), suggesting that these sequences are novel C. pneumoniae strains. One genotype is 96.9% similar to C. pneumoniae strains suggesting it may originate from a yet undescribed chlamydial species within the genus Chlamydia. This study further highlights the broad host range for C. pneumoniae and suggests that reptiles may still contain a significant and largely uncharacterised level of chlamydial genetic diversity that requires further investigation.
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Affiliation(s)
- Alyce Taylor-Brown
- Faculty of Health, Science, Engineering and Education, University of the Sunshine Coast, Sippy Downs, Queensland 4556, Australia
| | - Simon Rüegg
- Section of Veterinary Epidemiology, University of Zurich, Winterthurerstrasse 270, 8057 Zurich, Switzerland
| | - Adam Polkinghorne
- Faculty of Health, Science, Engineering and Education, University of the Sunshine Coast, Sippy Downs, Queensland 4556, Australia
| | - Nicole Borel
- Institute of Veterinary Pathology, University of Zurich, Winterthurerstrasse 268, 8057 Zurich, Switzerland.
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Disseminated Mycobacterium haemophilum infection in an ASSAM trinket snake (Elaphe frenata). J Zoo Wildl Med 2015; 45:966-9. [PMID: 25632694 DOI: 10.1638/2014-0078.1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A sub-adult male Assam trinket snake (Elaphe frenata) that was confiscated from an exotic animal dealer was found dead in its enclosure after a 17-mo quarantine. The snake had grown well during that period and had no physical examination or bloodwork abnormalities during the quarantine. On gross necropsy, masses were found in the epaxial musculature and stomach, the lung was diffusely thickened, the ventricular wall was mottled, and there was intracoelomic and pericardial effusion. Histopathology revealed diffusely disseminated granulomatous infiltrates throughout the lung interstitium and multifocal granulomatous infiltrates in the transmural gastric mass, within the myocardium and pericardial adipose tissue, in the liver and kidney parenchyma, in the cervical region surrounding the trachea and thyroid, and replacing the myofibers of the craniolateral epaxial muscles. Fite-Farracho acid-fast staining revealed numerous intracytoplasmic acid-fast bacilli within macrophages, and polymerase chain reaction testing on frozen tissues followed by nucleic acid sequencing of polymerase chain reaction amplicons identified Mycobacterium haemophilum.
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Taylor-Brown A, Vaughan L, Greub G, Timms P, Polkinghorne A. Twenty years of research into Chlamydia-like organisms: a revolution in our understanding of the biology and pathogenicity of members of the phylum Chlamydiae. Pathog Dis 2014; 73:1-15. [PMID: 25854000 DOI: 10.1093/femspd/ftu009] [Citation(s) in RCA: 89] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/29/2014] [Indexed: 11/13/2022] Open
Abstract
Chlamydiae are obligate intracellular bacteria that share a unique but remarkably conserved biphasic developmental cycle that relies on a eukaryotic host cell for survival. Although the phylum was originally thought to only contain one family, the Chlamydiaceae, a total of nine families are now recognized. These so-called Chlamydia-like organisms (CLOs) are also referred to as 'environmental chlamydiae', as many were initially isolated from environmental sources. However, these organisms are also emerging pathogens, as many, such as Parachlamydia sp., Simkania sp. and Waddlia sp., have been associated with human disease, and others, such as Piscichlamydia sp. and Parilichlamydia sp., have been documented in association with diseases in animals. Their strict intracellular nature and the requirement for cell culture have been a confounding factor in characterizing the biology and pathogenicity of CLOs. Nevertheless, the genomes of seven CLO species have now been sequenced, providing new information on their potential ability to adapt to a wide range of hosts. As new isolation and diagnostic methods advance, we are able to further explore the richness of this phylum with further research likely to help define the true pathogenic potential of the CLOs while also providing insight into the origins of the 'traditional' chlamydiae.
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Affiliation(s)
- Alyce Taylor-Brown
- Faculty of Science, Health, Education and Engineering, University of the Sunshine Coast, Sippy Downs, Queensland 4556, Australia
| | - Lloyd Vaughan
- Institute of Veterinary Pathology, University of Zurich, CH-8057 Zurich, Switzerland
| | - Gilbert Greub
- Institute of Microbiology, University of Lausanne, CH-1011 Lausanne, Switzerland
| | - Peter Timms
- Faculty of Science, Health, Education and Engineering, University of the Sunshine Coast, Sippy Downs, Queensland 4556, Australia
| | - Adam Polkinghorne
- Faculty of Science, Health, Education and Engineering, University of the Sunshine Coast, Sippy Downs, Queensland 4556, Australia
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Cope I, Wheelhouse N, Pocknell A, Dagleish M, Summers B. An unusual presentation of
Chlamydia pneumoniae
infection in a Royal Python (
Python regius
). VETERINARY RECORD CASE REPORTS 2014. [DOI: 10.1136/vetreccr-2014-000086] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Iain Cope
- Department of ExoticsCambridge Vet GroupCambridgeCambridgeshireUK
| | | | | | | | - Brian Summers
- The Royal Veterinary CollegeHawkshead Lane, North MymmsHatfieldHertfordshireAL9 7TAUK
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Burach F, Pospischil A, Hanger J, Loader J, Pillonel T, Greub G, Borel N. Chlamydiaceae and Chlamydia-like organisms in the koala (Phascolarctos cinereus)—Organ distribution and histopathological findings. Vet Microbiol 2014; 172:230-40. [DOI: 10.1016/j.vetmic.2014.04.022] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2014] [Revised: 04/24/2014] [Accepted: 04/26/2014] [Indexed: 11/28/2022]
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Frutos MC, Monetti MS, Ré VE, Cuffini CG. Molecular evidence of Chlamydophila pneumoniae infection in reptiles in Argentina. Rev Argent Microbiol 2014; 46:45-8. [PMID: 24721274 DOI: 10.1016/s0325-7541(14)70047-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2013] [Accepted: 02/14/2014] [Indexed: 11/26/2022] Open
Abstract
In the central area of Argentina, the epidemiological and molecular characteristics of Chlamydophila pneumoniae infections in reptiles are still unknown. A nested polymerase chain reaction of the rpoB gene was used to detect C. pneumoniae in cloacal swab samples from 19 reptiles at a recreational area. Eleven (57.89%) reptiles were positive; the sequencing and phylogenetic analysis confirmed the presence of this bacterium. Neither C. pneumoniae DNA in the caregivers pharynges nor IgM antibodies anti-C. pneumoniae in their serum samples were detected; however, caregivers presented very high titers of IgG anti-C. pneumoniae. The detection of C. pneumoniae DNA in reptiles demonstrated the circulation of this agent in the recreational area and could be responsible for the exacerbated immune response of the personnel handling the reptiles, which suggests a potential zoonotic cycle. This is the first report of the detection of C. pneumoniae in reptiles in Argentina.
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Affiliation(s)
- María C Frutos
- Instituto de Virología "Dr. J. M. Vanella", Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Córdoba, Argentina.
| | - Marina S Monetti
- Instituto de Virología "Dr. J. M. Vanella", Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Viviana E Ré
- Instituto de Virología "Dr. J. M. Vanella", Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Cecilia G Cuffini
- Instituto de Virología "Dr. J. M. Vanella", Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Córdoba, Argentina
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41
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Schmidt V, Marschang RE, Abbas MD, Ball I, Szabo I, Helmuth R, Plenz B, Spergser J, Pees M. Detection of pathogens in Boidae and Pythonidae with and without respiratory disease. Vet Rec 2013; 172:236. [DOI: 10.1136/vr.100972] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
| | | | | | - I. Ball
- Institute of Environmental and Animal Hygiene; University of Hohenheim; Garbenstr 30 Stuttgart D-70599 Germany
| | | | - R. Helmuth
- National Salmonella Reference Laboratory; Federal Institute for Risk Assessment; Diedersdorfer Weg 1 Berlin 12277 Germany
| | | | - J. Spergser
- Institute of Bacteriology; Mycology and Hygiene; University of Veterinary Medicine Vienna; Veterinärplatz 1 Vienna A-1210 Austria
| | - M. Pees
- Clinic for Birds and Reptiles; University of Leipzig; An den Tierkliniken 17 Leipzig D-04103 Germany
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42
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Ebani VV, Fratini F, Bertelloni F, Cerri D, Tortoli E. Isolation and identification of mycobacteria from captive reptiles. Res Vet Sci 2012; 93:1136-8. [DOI: 10.1016/j.rvsc.2012.05.006] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2012] [Revised: 05/08/2012] [Accepted: 05/13/2012] [Indexed: 11/17/2022]
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43
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Page-Karjian A, Knowles S, Howerth EW, Berliner AL, Clauss TM, Hyatt MW, Camus AC. Pathology in practice. Granulomatous inflammation in a snake. J Am Vet Med Assoc 2012; 241:1159-61. [PMID: 23078560 DOI: 10.2460/javma.241.9.1159] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- Annie Page-Karjian
- Department of Pathology, College of Veterinary Medicine, University of Georgia, Athens, GA 30602, USA
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Abstract
Mycobacteriosis is an important disease worldwide. Although commonly associated with higher vertebrates, including humans, it has been reported in only a handful of reptile cases. The purpose of this article is to review the literature as it relates to mycobacteriosis in reptiles. Knowledge of the epidemiology of this disease can be useful to veterinarians working with these animals, especially when working on a diagnosis and making recommendations to clients regarding the need for case follow-up to rule in or rule out the potential presence of these pathogens in pet reptiles and best handling practices to minimize their exposure.
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Affiliation(s)
- Mark A Mitchell
- Department of Veterinary Clinical Medicine, College of Veterinary Medicine, University of Illinois, Urbana, IL 61802, USA.
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45
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Dahlhausen B, Tovar DS, Saggese MD. Diagnosis of mycobacterial infections in the exotic pet patient with emphasis on birds. Vet Clin North Am Exot Anim Pract 2012; 15:71-vi. [PMID: 22244114 DOI: 10.1016/j.cvex.2011.11.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The term “mycobacteriosis” encompasses a variety of infectious diseases of animals caused by bacteria of the genus Mycobacterium, which are chronic and debilitating diseases. More than 35 Mycobacterium spp can cause mycobacteriosis. The wide range of possible clinical signs and physical exam findings can make the antemortem diagnosis inconsistent and challenging. Proper sample collection and test modality in relation to the state of the disease process are essential. Clinicians can determine a presumptive diagnosis of mycobacteriosis, but the definitive etiologic diagnosis of mycobacteriosis relies on the correct identification of the mycobacteria through microbiological and molecular diagnostic methods.
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Affiliation(s)
- Bob Dahlhausen
- Veterinary Molecular Diagnostic, Inc, Milford, OH 45150, USA.
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Reavill DR, Schmidt RE. Mycobacterial lesions in fish, amphibians, reptiles, rodents, lagomorphs, and ferrets with reference to animal models. Vet Clin North Am Exot Anim Pract 2012; 15:25-v. [PMID: 22244111 DOI: 10.1016/j.cvex.2011.10.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Mycobacteriosis is a serious disease across many animal species. Approximately more than 120 species are currently recognized in the genus Mycobacterium. This article describes the zoonotic potential of mycobacteria and mycobacteriosis in fish, amphibians, rodents, rabbits, and ferrets. It considers clinical signs; histology; molecular methods of identification, such as polymerase chain reaction and DNA sequencing; routes of infection; and disease progression. Studying the disease in animals may aid in understanding the pathogenesis of mycobacterial infections in humans and identify better therapy and preventative options such as vaccines.
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Affiliation(s)
- Drury R Reavill
- Zoo/Exotic Pathology Service, West Sacramento, CA 95605, USA.
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Wheelhouse N, Longbottom D. Endemic and emerging chlamydial infections of animals and their zoonotic implications. Transbound Emerg Dis 2011; 59:283-91. [PMID: 22099945 DOI: 10.1111/j.1865-1682.2011.01274.x] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The Chlamydiae are a diverse group of obligate intracellular Gram-negative bacteria that are known to infect a wide variety of host species and are responsible for a wide range of diseases in animals and man. Many of these organisms have been extensively characterized and their zoonotic implications recognized. Studies of human disease first provided evidence for the disease-causing potential of Chlamydia-related bacteria; however, there is now increasing evidence that a number of these organisms may also be the causative agents for a number of pathogenic conditions of livestock that had previously remained undiagnosed. The aim of this review is to draw together the evidence for the role of the newly emerging chlamydial infections in livestock disease, the current understanding of their roles in human disease and highlight the potential for zoonotic transmission.
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Affiliation(s)
- N Wheelhouse
- Moredun Research Institute, Pentlands Science Park, Edinburgh, UK.
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Sibitz C, Rudnay EC, Wabnegger L, Spergser J, Apfalter P, Nell B. Detection of Chlamydophila pneumoniae in cats with conjunctivitis. Vet Ophthalmol 2011; 14 Suppl 1:67-74. [PMID: 21923826 DOI: 10.1111/j.1463-5224.2011.00919.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
OBJECTIVE To determine the presence of chlamydial species including recently described chlamydial agents as well as the human pathogen Chlamydophila pneumoniae in feline conjunctivitis. ANIMAL STUDIED Twenty five cats without and 49 cats with conjunctivitis were tested for chlamydia using a Chlamydiaceae real time (RT) PCR (targeting the 23S rRNA gene sequence), a Chlamydiales PCR (targeting the 16S rRNA gene sequence), and cell culture. The PCR products of all positive samples were sequenced and subsequently analyzed using a basic local alignment search tool search. RESULTS Chlamydiaceae RT PCR and subsequent sequence analyses identified C. pneumoniae in five cats in the conjunctivitis group. The presence of Chlamydophila felis was shown in two cats with conjunctivitis. Chlamydiae related to uncultured members of Chlamydiales were detected in three conjunctivitis cases and in one cat without clinical symptoms. CONCLUSION This study detects for the first time, the known human pathogen C. pneumoniae in feline conjunctivitis cases using Chlamydiaceae RT PCR and sequence analyses.
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Affiliation(s)
- Christina Sibitz
- Clinic for Surgery and Ophthalmology, University of Veterinary Medicine Vienna, Veterinärplatz 1, 1210 Vienna, Austria.
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Rataj AV, Lindtner-Knific R, Vlahović K, Mavri U, Dovč A. Parasites in pet reptiles. Acta Vet Scand 2011; 53:33. [PMID: 21624124 PMCID: PMC3118381 DOI: 10.1186/1751-0147-53-33] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2011] [Accepted: 05/30/2011] [Indexed: 11/10/2022] Open
Abstract
Exotic reptiles originating from the wild can be carriers of many different pathogens and some of them can infect humans. Reptiles imported into Slovenia from 2000 to 2005, specimens of native species taken from the wild and captive bred species were investigated. A total of 949 reptiles (55 snakes, 331 lizards and 563 turtles), belonging to 68 different species, were examined for the presence of endoparasites and ectoparasites. Twelve different groups (Nematoda (5), Trematoda (1), Acanthocephala (1), Pentastomida (1) and Protozoa (4)) of endoparasites were determined in 26 (47.3%) of 55 examined snakes. In snakes two different species of ectoparasites were also found. Among the tested lizards eighteen different groups (Nematoda (8), Cestoda (1), Trematoda (1), Acanthocephala (1), Pentastomida (1) and Protozoa (6)) of endoparasites in 252 (76.1%) of 331 examined animals were found. One Trombiculid ectoparasite was determined. In 563 of examined turtles eight different groups (Nematoda (4), Cestoda (1), Trematoda (1) and Protozoa (2)) of endoparasites were determined in 498 (88.5%) animals. In examined turtles three different species of ectoparasites were seen. The established prevalence of various parasites in reptiles used as pet animals indicates the need for examination on specific pathogens prior to introduction to owners.
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Abstract
This article reviews anatomy, physiology, diagnostic techniques, and specific disease syndromes of the chelonian respiratory system. Respiratory disease is common in chelonians and is a cause of significant morbidity and mortality in these animals. Mycoplasma, herpesvirus, and iridovirus are reviewed in depth.
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Affiliation(s)
- Tracy Bennett
- Bird and Exotic Clinic of Seattle, 4019 Aurora Avenue North, Seattle, WA 98103, USA.
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