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M de Freitas Pereira R, de Oliveira Filho HS, C Duarte JL, R P Júnior F, de Sousa Lima T, Dos Santos KMOL, da Silva Pereira E, Jerônimo da Silva N, Bruno de Oliveira CJ, Leal de Araújo J, de Souza Mendonça F. Fibrinonecrotic enteritis and orchitis associated with Salmonella enterica subsp houtenae infection in a short-tailed boa (Boa constrictor amarali). J Comp Pathol 2024; 209:1-5. [PMID: 38306731 DOI: 10.1016/j.jcpa.2024.01.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 11/28/2023] [Accepted: 01/08/2024] [Indexed: 02/04/2024]
Abstract
Salmonella enterica subsp houtenae has been recovered from a wide variety of species, including reptiles, and has been linked to important clinical manifestations in snakes and lizards. We describe a case of concomitant fibrinonecrotic enteritis and orchitis associated with S. enterica subsp houtenae infection in a short-tailed boa (Boa constrictor amarali). At necropsy, the mucosa of the large intestine was covered by a focally extensive fibrinonecrotic exudate (diphtheritic pseudomembrane). The left testicle was enlarged, firm and diffusely expanded by a thick fibrinous yellow exudate. Polymerase chain reaction and conclusive antigenic testing indicated that the bacteria isolated from the lesions were S. enterica subsp houtenae, and the virulence genes InvA, slyA, stn and spvC were identified. This report reinforces that, although S. enterica subsp houtenae has been isolated from asymptomatic reptiles, it has the potential to cause life-threatening disease in snakes.
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Affiliation(s)
- Raquel M de Freitas Pereira
- Animal Diagnostic Laboratory, Federal Rural University of Pernambuco, Manuel de Medeiros Street 97, Recife-PE, 52171-900, Brazil.
| | - Hodias S de Oliveira Filho
- Laboratory of Veterinary Pathology, Federal University of Paraíba, Highway PB-079, Areia-PB, 58051-900, Brazil
| | - José L C Duarte
- Laboratory of Veterinary Pathology, Federal University of Paraíba, Highway PB-079, Areia-PB, 58051-900, Brazil
| | - Fabiano R P Júnior
- Department of Wild Animals, Cesmac University Center, Highway Divaldo Suruagy S/N, Marechal Deodoro-AL, 57081-350, Brazil
| | - Telma de Sousa Lima
- Animal Diagnostic Laboratory, Federal Rural University of Pernambuco, Manuel de Medeiros Street 97, Recife-PE, 52171-900, Brazil
| | - Kin M O L Dos Santos
- Laboratory of Veterinary Pathology, Federal University of Paraíba, Highway PB-079, Areia-PB, 58051-900, Brazil
| | - Edivaldo da Silva Pereira
- Laboratory of Preventive Veterinary Medicine, Federal University of Paraíba, Highway PB-079, Areia-PB, 58051-900, Brazil
| | - Nádyra Jerônimo da Silva
- Laboratory for the Evaluation of Products of Animal Origin, Federal University of Paraíba, Highway PB-079, Areia-PB, 58051-900, Brazil
| | - Celso J Bruno de Oliveira
- Laboratory for the Evaluation of Products of Animal Origin, Federal University of Paraíba, Highway PB-079, Areia-PB, 58051-900, Brazil
| | - Jeann Leal de Araújo
- Laboratory of Veterinary Pathology, Federal University of Paraíba, Highway PB-079, Areia-PB, 58051-900, Brazil
| | - Fábio de Souza Mendonça
- Animal Diagnostic Laboratory, Federal Rural University of Pernambuco, Manuel de Medeiros Street 97, Recife-PE, 52171-900, Brazil
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Pees M, Brockmann M, Steiner N, Marschang RE. Salmonella in reptiles: a review of occurrence, interactions, shedding and risk factors for human infections. Front Cell Dev Biol 2023; 11:1251036. [PMID: 37822870 PMCID: PMC10562597 DOI: 10.3389/fcell.2023.1251036] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Accepted: 09/11/2023] [Indexed: 10/13/2023] Open
Abstract
Salmonella are considered a part of the normal reptile gut microbiota, but have also been associated with disease in reptiles. Reptile-associated salmonellosis (RAS) can pose a serious health threat to humans, especially children, and an estimated 6% of human sporadic salmonellosis cases have been attributed to direct or indirect contact with reptiles, although the exact number is not known. Two literature searches were conducted for this review. The first evaluated reports of the prevalence of Salmonella in the intestinal tracts of healthy reptiles. Salmonella were most commonly detected in snakes (56.0% overall), followed by lizards (36.9%) and tortoises (34.2%), with lower detection rates reported for turtles (18.6%) and crocodilians (9%). Reptiles in captivity were significantly more likely to shed Salmonella than those sampled in the wild. The majority of Salmonella strains described in reptiles belonged to subspecies I (70.3%), followed by subspecies IIIb (29.7%) and subspecies II (19.6%). The second literature search focused on reports of RAS, revealing that the highest number of cases was associated with contact with turtles (35.3%), followed by lizards (27.1%) and snakes (20.0%). Reptiles associated with RAS therefore did not directly reflect prevalence of Salmonella reported in healthy representatives of a given reptile group. Clinical symptoms associated with RAS predominantly involved the gastrointestinal tract, but also included fever, central nervous symptoms, problems with circulation, respiratory symptoms and others. Disease caused by Salmonella in reptiles appears to be dependent on additional factors, including stress, inadequate husbandry and hygiene, and other infectious agents. While it has been suggested that reptile serovars may cause more severe disease than human-derived strains, and some data is available on invasiveness of individual strains in cell culture, limited information is available on potential mechanisms influencing invasiveness and immune evasion in reptiles and in RAS. Strategies to mitigate the spread of Salmonella through reptiles and to reduce RAS focus mostly on education and hygiene, and have often been met with some success, but additional efforts are needed. Many aspects regarding Salmonella in reptiles remain poorly understood, including the mechanisms by which Salmonella persist in reptile hosts without causing disease.
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Affiliation(s)
- Michael Pees
- Department of Small Mammal, Reptile and Avian Diseases, University of Veterinary Medicine Hannover, Hanover, Germany
| | | | - Natalie Steiner
- Department of Small Mammal, Reptile and Avian Diseases, University of Veterinary Medicine Hannover, Hanover, Germany
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Valli FE, Leiva PML, Lavandera J, Contini MC, Gerstner C, Piña CI, Simoncini MS, González MA. Caiman's fat enriched with n-3 fatty acids: potential food supplement. Trop Anim Health Prod 2023; 55:194. [PMID: 37145203 DOI: 10.1007/s11250-023-03602-7] [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: 11/09/2022] [Accepted: 04/18/2023] [Indexed: 05/06/2023]
Abstract
Broad-snouted caiman (Caiman latirostris) products (meat, fat and oil) are currently beginning to be valued as a food of special interest due to its high content of n-3 fatty acids. Thus, the objective of this study was to characterize the fats of caiman fed with diets enriched with flaxseeds (Linus usitatissimun) rich in n-3 fatty acids, lignans and antioxidants. Caimans were fed six days a week with: a control diet (C), and a diet enriched with ground flaxseed = 90% C + 10% flaxseed ground (FS), during 30 (FS30) and 60 (FS60) days. Animals fed the flaxseed-enriched diets increased linolenic acid content and reduced the n-6/n-3 ratio of fats relative to controls, and this improvement increased over time. The proportion of eicosapentaenoic acid also increased, but there was no difference at the time the enriched diets were offered. Caiman fat of the FS30 and FS60, showed a decrease in lipoperoxidation (24% and 40%) and reactive oxygen species (44% and 76%) accompanied by an increase in antioxidant systems. Consumption of a flax-enriched diet by caimans increases the content of essential fatty acids and improves the lipoperoxidative status of fat. This provides an enriched fat with potential for the development products for human consumption.
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Affiliation(s)
- Florencia E Valli
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Avda. Rivadavia 1917, CP, C1033AAJ, Buenos Aires, Argentina
- Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Ciudad Universitaria, 3000, Santa Fe, Argentina
- CICyTTP-CONICET/Prov. Entre Ríos/UADER, España 149 3105, Diamante, Entre Ríos, Argentina
- Proyecto Yacaré, Laboratorio de Zoología Aplicada: Anexo Vertebrados, FHUC/UNL, Aristóbulo del Valle 8700, Santa Fe, Santa Fe, Argentina
| | - Pamela M L Leiva
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Avda. Rivadavia 1917, CP, C1033AAJ, Buenos Aires, Argentina
- Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Ciudad Universitaria, 3000, Santa Fe, Argentina
- CICyTTP-CONICET/Prov. Entre Ríos/UADER, España 149 3105, Diamante, Entre Ríos, Argentina
- Proyecto Yacaré, Laboratorio de Zoología Aplicada: Anexo Vertebrados, FHUC/UNL, Aristóbulo del Valle 8700, Santa Fe, Santa Fe, Argentina
- Facultad de Ciencia y Tecnología, Universidad Autónoma de Entre Ríos, Tratado del Pilar 314 3105, Entre Ríos, Diamante, Argentina
| | - Jimena Lavandera
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Avda. Rivadavia 1917, CP, C1033AAJ, Buenos Aires, Argentina
- Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Ciudad Universitaria, 3000, Santa Fe, Argentina
| | - María C Contini
- Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Ciudad Universitaria, 3000, Santa Fe, Argentina
| | - Carolina Gerstner
- Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Ciudad Universitaria, 3000, Santa Fe, Argentina
| | - Carlos I Piña
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Avda. Rivadavia 1917, CP, C1033AAJ, Buenos Aires, Argentina
- CICyTTP-CONICET/Prov. Entre Ríos/UADER, España 149 3105, Diamante, Entre Ríos, Argentina
- Proyecto Yacaré, Laboratorio de Zoología Aplicada: Anexo Vertebrados, FHUC/UNL, Aristóbulo del Valle 8700, Santa Fe, Santa Fe, Argentina
- Facultad de Ciencia y Tecnología, Universidad Autónoma de Entre Ríos, Tratado del Pilar 314 3105, Entre Ríos, Diamante, Argentina
| | - Melina S Simoncini
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Avda. Rivadavia 1917, CP, C1033AAJ, Buenos Aires, Argentina.
- CICyTTP-CONICET/Prov. Entre Ríos/UADER, España 149 3105, Diamante, Entre Ríos, Argentina.
- Proyecto Yacaré, Laboratorio de Zoología Aplicada: Anexo Vertebrados, FHUC/UNL, Aristóbulo del Valle 8700, Santa Fe, Santa Fe, Argentina.
- Facultad de Ciencia y Tecnología, Universidad Autónoma de Entre Ríos, Tratado del Pilar 314 3105, Entre Ríos, Diamante, Argentina.
| | - Marcela A González
- Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Ciudad Universitaria, 3000, Santa Fe, Argentina.
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Prevalence of Different Salmonella enterica Subspecies and Serotypes in Wild Carnivores in Emilia-Romagna Region, Italy. Animals (Basel) 2022; 12:ani12233368. [PMID: 36496889 PMCID: PMC9738870 DOI: 10.3390/ani12233368] [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: 11/10/2022] [Revised: 11/28/2022] [Accepted: 11/29/2022] [Indexed: 12/02/2022] Open
Abstract
Salmonella is a pathogen of considerable health concern, given its zoonotic potential, and, in Italy, is the most frequently reported causative agent for foodborne outbreaks. Wild animals and in particular wild carnivores may be carriers of different Salmonella enterica subspecies and serotypes. Given their potential role as reservoirs, surveillance activities are necessary. This study aims to investigate the presence of different Salmonella subspecies and serotypes in wild carnivores in the Emilia-Romagna Region. A total of 718 fox (Vulpes vulpes), 182 badger (Meles meles) and 27 wolf (Canis lupus) carcasses, submitted between 2016-2022, were included for the present work. Gender and age data were collected along with geographical coordinates of carcass' discovery site. Contents of the large intestine were sampled and cultured according to ISO 6579-1 and both serogroup and serotype identification were performed according to ISO/TR 6579-3:2014. Salmonella was retrieved from 42 foxes (6%), 21 badgers (12%) and 3 wolves (12%), respectively. Isolated Salmonella enterica strains belonged to 4 different subspecies and 25 different serotypes. S. veneziana and S. typhimurium were the most frequent serotypes found (11/67 and 10/67, respectively). In conclusion, zoonotic serotypes were found in all these species of wildlife, thus confirming their potential role in the ecology of Salmonella spp.
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Klose C, Scuda N, Ziegler T, Eisenberger D, Hanczaruk M, Riehm JM. Whole-Genome Investigation of Salmonella Dublin Considering Mountain Pastures as Reservoirs in Southern Bavaria, Germany. Microorganisms 2022; 10:885. [PMID: 35630330 PMCID: PMC9146225 DOI: 10.3390/microorganisms10050885] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 04/19/2022] [Accepted: 04/21/2022] [Indexed: 02/04/2023] Open
Abstract
Worldwide, Salmonella Dublin (S. Dublin) is responsible for clinical disease in cattle and also in humans. In Southern Bavaria, Germany, the serovar was identified as a causative agent for 54 animal disease outbreaks in herds between 2017 and 2021. Most of these emerged from cattle herds (n = 50). Two occurred in pig farms and two in bovine herds other than cattle. Genomic analysis of 88 S. Dublin strains isolated during these animal disease outbreaks revealed 7 clusters with 3 different MLST-based sequence types and 16 subordinate cgMLST-based complex types. Antimicrobial susceptibility investigation revealed one resistant and three intermediate strains. Furthermore, only a few genes coding for bacterial virulence were found among the isolates. Genome analysis enables pathogen identification and antimicrobial susceptibility, serotyping, phylogeny, and follow-up traceback analysis. Mountain pastures turned out to be the most likely locations for transmission between cattle of different herd origins, as indicated by epidemiological data and genomic traceback analyses. In this context, S. Dublin shedding was also detected in asymptomatic herding dogs. Due to the high prevalence of S. Dublin in Upper Bavaria over the years, we suggest referring to this administrative region as "endemic". Consequently, cattle should be screened for salmonellosis before and after mountain pasturing.
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Affiliation(s)
- Corinna Klose
- Bavarian Health and Food Safety Authority, Eggenreuther Weg 43, 91058 Erlangen, Germany; (C.K.); (N.S.); (T.Z.); (D.E.)
| | - Nelly Scuda
- Bavarian Health and Food Safety Authority, Eggenreuther Weg 43, 91058 Erlangen, Germany; (C.K.); (N.S.); (T.Z.); (D.E.)
| | - Tobias Ziegler
- Bavarian Health and Food Safety Authority, Eggenreuther Weg 43, 91058 Erlangen, Germany; (C.K.); (N.S.); (T.Z.); (D.E.)
| | - David Eisenberger
- Bavarian Health and Food Safety Authority, Eggenreuther Weg 43, 91058 Erlangen, Germany; (C.K.); (N.S.); (T.Z.); (D.E.)
| | - Matthias Hanczaruk
- Bavarian Health and Food Safety Authority, Veterinaerstrasse 2, 85764 Oberschleißheim, Germany;
| | - Julia M. Riehm
- Bavarian Health and Food Safety Authority, Veterinaerstrasse 2, 85764 Oberschleißheim, Germany;
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Abstract
Antimicrobial resistance is one of the most serious threats to medical science. Food supply is recognized as a potential source of resistant bacteria, leading to the development of surveillance programs targeting primarily poultry, pork, and beef. These programs are limited in scope, not only in the commodities tested, but also in the organisms targeted (Escherichia coli, Salmonella, and Campylobacter); consequently, neither the breadth of food products available nor the organisms that may harbour clinically relevant and (or) mobile resistance genes are identified. Furthermore, there is an inadequate understanding of how international trade in food products contributes to the global dissemination of resistance. This is despite the recognized role of international travel in disseminating antimicrobial-resistant organisms, notably New Delhi metallo-beta-lactamase. An increasing number of studies describing antimicrobial-resistant organisms in a variety of imported foods are summarized in this review.
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Affiliation(s)
- Dongyun Jung
- Department of Food Science and Agricultural Chemistry, McGill University, Montreal, Quebec, Canada
| | - Beverly J Morrison
- Department of Ecosystem and Public Health, University of Calgary, Calgary, Alberta, Canada
| | - Joseph E Rubin
- Department of Veterinary Microbiology, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
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Characterization of non-typhoid Salmonellae isolated from domestic animals and wildlife from selected areas of Zambia. SCIENTIFIC AFRICAN 2020. [DOI: 10.1016/j.sciaf.2020.e00345] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
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Morrison BJ, Rubin JE. Detection of multidrug-resistant Gram-negative bacteria from imported reptile and amphibian meats. J Appl Microbiol 2020; 129:1053-1061. [PMID: 32259384 DOI: 10.1111/jam.14658] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2019] [Revised: 03/24/2020] [Accepted: 03/27/2020] [Indexed: 11/27/2022]
Abstract
AIMS The food supply is a potential source of antimicrobial resistance. Current surveillance programmes targeting food are limited to beef, pork and poultry and do not capture niche products. In this study, imported reptile and amphibian products were screened for antimicrobial-resistant bacteria. METHODS AND RESULTS In all, 53 items including soft shell turtles, frog legs, geckos, snakes and a turtle carapace were purchased from specialty markets in Vancouver and Saskatoon, Canada. Samples were selectively cultured for Salmonella sp., Escherichia coli, extended-spectrum β-lactamase (ESBL)-producing Enterobacteriaceae and meropenem-resistant organisms. Salmonella, all pan-susceptible, were grown from six dried geckos. Escherichia coli were isolated from 19 samples, including ESBL producers from six items. One multidrug-resistant E. coli possessed both the blaCTX-M-55 and mcr-1 genes. An NDM-1-producing Acinetobacter sp. was also isolated from a dried turtle carapace. CONCLUSIONS Our results suggest that imported reptile and amphibian meats are an underappreciated source of resistant bacteria. SIGNIFICANCE AND IMPACT OF THE STUDY The international trade of food may play a role in the dissemination of resistant bacteria. The presence of these bacteria in niche market foods represents a risk of unknown magnitude to public health and a gap in current national resistance surveillance programmes.
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Affiliation(s)
- B J Morrison
- Department of Veterinary Microbiology, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - J E Rubin
- Department of Veterinary Microbiology, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
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