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de Groot N, Meneguzzi M, de Souza B, de O. Costa M. In Vitro Screening of Non-Antibiotic Components to Mitigate Intestinal Lesions Caused by Brachyspira hyodysenteriae, Lawsonia intracellularis and Salmonella enterica Serovar Typhimurium. Animals (Basel) 2022; 12:ani12182356. [PMID: 36139216 PMCID: PMC9494979 DOI: 10.3390/ani12182356] [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: 08/12/2022] [Revised: 08/31/2022] [Accepted: 09/06/2022] [Indexed: 11/16/2022] Open
Abstract
Simple Summary The prevention, treatment, and control of swine dysentery, ileitis, and porcine salmonellosis diseases, respectively, caused by infection with Brachyspira hyodysenteriae, Lawsonia intracellularis, and Salmonella enterica serovar Typhimurium, still relies on the use of antimicrobials. The goal of this study was to evaluate the effectiveness of four commercially available non-antimicrobial compounds in preventing lesions caused by these bacteria using an in vitro intestinal culture model. The findings suggest that the non-antimicrobial compounds studied may have beneficial effects for the host based on the explant model data shown. These findings represent a step towards finding alternatives to antimicrobials usage and control of swine diseases in pork production. Abstract Swine dysentery, ileitis, and porcine salmonellosis are production-limiting diseases of global importance for swine production. They are caused by infection with Brachyspira hyodysenteriae, Lawsonia intracellularis, and Salmonella enterica serovar Typhimurium, respectively. Currently, the prevention, treatment, and control of these diseases still relies on antimicrobials. The goal of this study was to evaluate the effectiveness of four commercially available non-antimicrobial compounds in preventing lesions caused by the bacteria cited above using an in vitro intestinal culture model. A total of five pigs per pathogen were used and multiple compounds were evaluated. For compound F (a fungal fermented rye), S (a blend of short and medium chain fatty acids), and P (a synergistic blend of short and medium chain fatty acids, including coated butyrates), a total of four explants/pig for each treatment were used, while for compound D (an extract of carob and thyme) only 12 explants/pig for each treatment were used. Explants were exposed to a combination of pathogen only (n = 4/compound/pig), compound only (n = 4/compound/pig), or pathogen and compound (n = 4/compound/pig) and sampled at two time-points. Histopathology and gene expression levels were evaluated to investigate the treatment effect on explants. Short and medium-chain fatty acids, and an extract of carob and thyme, was found to mitigate lesions due to B. hyodysenteriae exposure. A fungal fermented prebiotic increased healthy epithelial coverage when explants were exposed to L. intracellularis or S. Typhimurium. These findings represent a step towards finding alternatives to antimicrobials usage and control of swine dysentery, ileitis, and salmonellosis in pork production.
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Affiliation(s)
- Nienke de Groot
- Departamento de Producción Animal, Facultad de Veterinaria, Universidad de Murcia, 30100 Murcia, Spain
| | - Mariana Meneguzzi
- Department of Veterinary Population Medicine, College of Veterinary Medicine, University of Minnesota, St. Paul, MN 55455, USA
| | - Barbara de Souza
- Departamento de Clínica and Cirurgia Veterinárias, Escola de Veterinária, Federal University of Minas Gerais, Belo Horizonte 31270-901, Brazil
| | - Matheus de O. Costa
- Large Animal Clinical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, SK S7N 5B4, Canada
- Department of Population Health Sciences, Faculty of Veterinary Medicine, Utrecht University, 3584 CS Utrecht, The Netherlands
- Correspondence:
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Pérez Gaudio DS, Martínez G, Fernández Paggi MB, Decundo JM, Romanelli A, Dieguez SN, Soraci AL. Ex vivo penetration of fosfomycin into healthy and Lawsonia intracellularis-colonized swine intestinal mucosa. J Vet Pharmacol Ther 2018; 41:878-886. [PMID: 29974968 DOI: 10.1111/jvp.12687] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Revised: 04/09/2018] [Accepted: 06/04/2018] [Indexed: 11/28/2022]
Abstract
Fosfomycin (FOS) is an antibiotic used, mostly in Latin America, for the treatment of lung and enteric infections of pigs. Intracellular fluids of enterocytes can act as biophase for Lawsonia intracellularis, the causative agent of porcine proliferative enteropathy (PPE). The aim of this study was to determine whether the presence of L. intracellularis in the enterocytes modifies FOS penetration. Eight healthy pigs in growth-finishing stage were used to produce healthy (group A) and L. intracellularis-colonized (group B) intestinal explants. For both groups, treatment consisted of a 580 μg/ml concentration of calcium FOS, which was added to each explant (0.5-6 hr). For group B, the Enterisol Ileitis® vaccine was used as source of the micro-organism. Previously to the assay, the time necessary for L. intracellularis to colonize the enterocytes was defined. Also, a PCR protocol was optimized to determine the presence of the pathogen in the explants. There were nonstatistical differences for the penetration of the antibiotic into healthy and L. intracellularis-colonized enterocytes. MIC90 of FOS for L. intracellularis is unknown; nevertheless, MIC90 of various antibiotics ranges between 0.125 and 128 μg/ml. FOS reaches inside the enterocyte concentrations which surpass the MICs90 of other antibiotics that also act by the inhibition of cell wall synthesis; however, further studies should be carried out to determine fosfomycin MIC90 for L. intracellularis to discern the usefulness of this antibiotic in the treatment of PPE.
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Affiliation(s)
- Denisa Soledad Pérez Gaudio
- Laboratorio de Toxicología, Departamento de Fisiopatología, Facultad de Ciencias Veterinarias, Centro de Investigación Veterinaria de Tandil (CIVETAN), Universidad Nacional del Centro de la Provincia de Buenos Aires, Tandil, Buenos Aires, Argentina.,Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Tandil, Buenos Aires, Argentina
| | - Guadalupe Martínez
- Laboratorio de Toxicología, Departamento de Fisiopatología, Facultad de Ciencias Veterinarias, Centro de Investigación Veterinaria de Tandil (CIVETAN), Universidad Nacional del Centro de la Provincia de Buenos Aires, Tandil, Buenos Aires, Argentina.,Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Tandil, Buenos Aires, Argentina
| | - María Belén Fernández Paggi
- Laboratorio de Toxicología, Departamento de Fisiopatología, Facultad de Ciencias Veterinarias, Centro de Investigación Veterinaria de Tandil (CIVETAN), Universidad Nacional del Centro de la Provincia de Buenos Aires, Tandil, Buenos Aires, Argentina.,Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Tandil, Buenos Aires, Argentina
| | - Julieta María Decundo
- Laboratorio de Toxicología, Departamento de Fisiopatología, Facultad de Ciencias Veterinarias, Centro de Investigación Veterinaria de Tandil (CIVETAN), Universidad Nacional del Centro de la Provincia de Buenos Aires, Tandil, Buenos Aires, Argentina.,Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Tandil, Buenos Aires, Argentina
| | - Agustina Romanelli
- Laboratorio de Toxicología, Departamento de Fisiopatología, Facultad de Ciencias Veterinarias, Centro de Investigación Veterinaria de Tandil (CIVETAN), Universidad Nacional del Centro de la Provincia de Buenos Aires, Tandil, Buenos Aires, Argentina.,Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Tandil, Buenos Aires, Argentina
| | - Susana Nelly Dieguez
- Laboratorio de Toxicología, Departamento de Fisiopatología, Facultad de Ciencias Veterinarias, Centro de Investigación Veterinaria de Tandil (CIVETAN), Universidad Nacional del Centro de la Provincia de Buenos Aires, Tandil, Buenos Aires, Argentina.,Comisión de Investigaciones Científicas de la Provincia de Buenos Aires (CIC), La Plata, Buenos Aires, Argentina
| | - Alejandro Luis Soraci
- Laboratorio de Toxicología, Departamento de Fisiopatología, Facultad de Ciencias Veterinarias, Centro de Investigación Veterinaria de Tandil (CIVETAN), Universidad Nacional del Centro de la Provincia de Buenos Aires, Tandil, Buenos Aires, Argentina.,Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Tandil, Buenos Aires, Argentina
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Tang J, Wu Q, Tang X, Shi R, Suo J, Huang G, An J, Wang J, Yang J, Hao W, She R, Suo X. Development of a vivo rabbit ligated intestinal Loop Model for HCMV infection. J Anim Sci Biotechnol 2016; 7:69. [PMID: 27999668 PMCID: PMC5154130 DOI: 10.1186/s40104-016-0129-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2015] [Accepted: 11/19/2016] [Indexed: 01/27/2023] Open
Abstract
BACKGROUND Human Cytomegalovirus (HCMV) infections can be found throughout the body, especially in epithelial tissue. Animal model was established by inoculation of HCMV (strain AD-169) or coinoculation with Hepatitis E virus (HEV) into the ligated sacculus rotundus and vermiform appendix in living rabbits. The specimens were collected from animals sacrificed 1 and a half hours after infection. RESULTS The virus was found to be capable of reproducing in these specimens through RT-PCR and Western-blot. Severe inflammation damage was found in HCMV-infected tissue. The viral protein could be detected in high amounts in the mucosal epithelium and lamina propria by immunohistochemistry and immunofluorescense. Moreover, there are strong positive signals in lymphocytes, macrophages, and lymphoid follicles. Quantitative statistics indicate that lymphocytes among epithlium cells increased significantly in viral infection groups. CONCLUSIONS The results showed that HCMV or HEV + HCMV can efficiently infect in rabbits by vivo ligated intestine loop inoculation. The present study successfully developed an infective model in vivo rabbit ligated intestinal Loop for HCMV pathogenesis study. This rabbit model can be helpful for understanding modulation of the gut immune system with HCMV infection.
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Affiliation(s)
- Jin Tang
- National animal protozoa laboratory,College of VeterinaryMedicine, China Agricultural University, Beijing, 100193 China
| | - Qiaoxing Wu
- Laboratory of Animal Pathology & Public Health, College of Veterinary Medicine, China Agricultural University, Beijing, 100193 China
| | - Xinming Tang
- National animal protozoa laboratory,College of VeterinaryMedicine, China Agricultural University, Beijing, 100193 China
| | - Ruihan Shi
- Laboratory of Animal Pathology & Public Health, College of Veterinary Medicine, China Agricultural University, Beijing, 100193 China
| | - Jingxia Suo
- National animal protozoa laboratory,College of VeterinaryMedicine, China Agricultural University, Beijing, 100193 China
| | - Guangping Huang
- National animal protozoa laboratory,College of VeterinaryMedicine, China Agricultural University, Beijing, 100193 China
| | - Junqing An
- Laboratory of Animal Pathology & Public Health, College of Veterinary Medicine, China Agricultural University, Beijing, 100193 China
| | - Jingyuan Wang
- Laboratory of Animal Pathology & Public Health, College of Veterinary Medicine, China Agricultural University, Beijing, 100193 China
| | - Jinling Yang
- Laboratory of Animal Pathology & Public Health, College of Veterinary Medicine, China Agricultural University, Beijing, 100193 China
| | - Wenzhuo Hao
- Laboratory of Animal Pathology & Public Health, College of Veterinary Medicine, China Agricultural University, Beijing, 100193 China
| | - Ruiping She
- Laboratory of Animal Pathology & Public Health, College of Veterinary Medicine, China Agricultural University, Beijing, 100193 China
| | - Xun Suo
- National animal protozoa laboratory,College of VeterinaryMedicine, China Agricultural University, Beijing, 100193 China
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Sampieri F, Allen AL, Pusterla N, Vannucci FA, Antonopoulos AJ, Ball KR, Thompson J, Dowling PM, Hamilton DL, Gebhart CJ. The rabbit as an infection model for equine proliferative enteropathy. CANADIAN JOURNAL OF VETERINARY RESEARCH = REVUE CANADIENNE DE RECHERCHE VETERINAIRE 2013; 77:110-9. [PMID: 24082402 PMCID: PMC3605926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Received: 02/10/2012] [Accepted: 06/06/2012] [Indexed: 06/02/2023]
Abstract
The objective of this study was to demonstrate the susceptibility of rabbits to Lawsonia intracellularis obtained from a case of clinical equine proliferative enteropathy (EPE). This is a preliminary step toward developing a rabbit infection model for studying pathogenesis and therapy of EPE in horses. Nine does were equally assigned to 3 groups. Animals in 2 groups (Group 1 and Group 2) were orally inoculated with different doses of cell-cultured L. intracellularis. Controls (Group 3) were sham-inoculated. Feces and blood were collected before the rabbits were infected and at 7, 14, and 21 days post-infection (DPI). Serum immunoglobulin G (IgG) titers were measured using an immunoperoxidase monolayer assay (IPMA) and fecal samples were analyzed with quantitative polymerase chain reaction (qPCR). A doe from each group was euthanized at 7, 14, and 21 DPI for collection and evaluation of intestinal samples. Tissues were stained by routine hematoxylin and eosin (H&E) method and immunohistochemistry (IHC) with L. intracellularis-specific mouse monoclonal antibody. At 14 DPI, serologic responses were detected in both infected groups, which maintained high titers through to 21 DPI. Lawsonia intracellularis DNA was detected in the feces of Group 2 on 7 DPI and in both infected groups on 14 DPI. Gross lesions were apparent in Group 1 and Group 2 on 14 DPI. Immunohistochemistry confirmed L. intracellularis antigen within cells of rabbits in Group 1 and Group 2 on 7, 14, and 21 DPI. No lesions, serologic response, shedding, or IHC labeling were found in Group 3 rabbits. This study describes an EPE rabbit model that simulates natural infection, as typical lesions, immune response, and fecal shedding were present.
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Affiliation(s)
- Francesca Sampieri
- Department of Veterinary Biomedical Sciences (Sampieri, Antonopoulos, Ball, Dowling, Hamilton), Department of Veterinary Pathology (Allen), Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Saskatchewan; Department of Veterinary Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis, California, USA (Pusterla); Department of Veterinary and Biomedical Sciences, College of Veterinary Medicine, University of Minnesota, Saint Paul, Minnesota, USA (Vannucci, Gebhart); Canadian Light Source, Saskatoon, Saskatchewan (Thompson)
| | - Andrew L. Allen
- Department of Veterinary Biomedical Sciences (Sampieri, Antonopoulos, Ball, Dowling, Hamilton), Department of Veterinary Pathology (Allen), Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Saskatchewan; Department of Veterinary Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis, California, USA (Pusterla); Department of Veterinary and Biomedical Sciences, College of Veterinary Medicine, University of Minnesota, Saint Paul, Minnesota, USA (Vannucci, Gebhart); Canadian Light Source, Saskatoon, Saskatchewan (Thompson)
| | - Nicola Pusterla
- Department of Veterinary Biomedical Sciences (Sampieri, Antonopoulos, Ball, Dowling, Hamilton), Department of Veterinary Pathology (Allen), Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Saskatchewan; Department of Veterinary Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis, California, USA (Pusterla); Department of Veterinary and Biomedical Sciences, College of Veterinary Medicine, University of Minnesota, Saint Paul, Minnesota, USA (Vannucci, Gebhart); Canadian Light Source, Saskatoon, Saskatchewan (Thompson)
| | - Fabio A. Vannucci
- Department of Veterinary Biomedical Sciences (Sampieri, Antonopoulos, Ball, Dowling, Hamilton), Department of Veterinary Pathology (Allen), Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Saskatchewan; Department of Veterinary Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis, California, USA (Pusterla); Department of Veterinary and Biomedical Sciences, College of Veterinary Medicine, University of Minnesota, Saint Paul, Minnesota, USA (Vannucci, Gebhart); Canadian Light Source, Saskatoon, Saskatchewan (Thompson)
| | - Aphroditi J. Antonopoulos
- Department of Veterinary Biomedical Sciences (Sampieri, Antonopoulos, Ball, Dowling, Hamilton), Department of Veterinary Pathology (Allen), Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Saskatchewan; Department of Veterinary Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis, California, USA (Pusterla); Department of Veterinary and Biomedical Sciences, College of Veterinary Medicine, University of Minnesota, Saint Paul, Minnesota, USA (Vannucci, Gebhart); Canadian Light Source, Saskatoon, Saskatchewan (Thompson)
| | - Katherine R. Ball
- Department of Veterinary Biomedical Sciences (Sampieri, Antonopoulos, Ball, Dowling, Hamilton), Department of Veterinary Pathology (Allen), Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Saskatchewan; Department of Veterinary Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis, California, USA (Pusterla); Department of Veterinary and Biomedical Sciences, College of Veterinary Medicine, University of Minnesota, Saint Paul, Minnesota, USA (Vannucci, Gebhart); Canadian Light Source, Saskatoon, Saskatchewan (Thompson)
| | - Julie Thompson
- Department of Veterinary Biomedical Sciences (Sampieri, Antonopoulos, Ball, Dowling, Hamilton), Department of Veterinary Pathology (Allen), Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Saskatchewan; Department of Veterinary Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis, California, USA (Pusterla); Department of Veterinary and Biomedical Sciences, College of Veterinary Medicine, University of Minnesota, Saint Paul, Minnesota, USA (Vannucci, Gebhart); Canadian Light Source, Saskatoon, Saskatchewan (Thompson)
| | - Patricia M. Dowling
- Department of Veterinary Biomedical Sciences (Sampieri, Antonopoulos, Ball, Dowling, Hamilton), Department of Veterinary Pathology (Allen), Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Saskatchewan; Department of Veterinary Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis, California, USA (Pusterla); Department of Veterinary and Biomedical Sciences, College of Veterinary Medicine, University of Minnesota, Saint Paul, Minnesota, USA (Vannucci, Gebhart); Canadian Light Source, Saskatoon, Saskatchewan (Thompson)
| | - Don L. Hamilton
- Department of Veterinary Biomedical Sciences (Sampieri, Antonopoulos, Ball, Dowling, Hamilton), Department of Veterinary Pathology (Allen), Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Saskatchewan; Department of Veterinary Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis, California, USA (Pusterla); Department of Veterinary and Biomedical Sciences, College of Veterinary Medicine, University of Minnesota, Saint Paul, Minnesota, USA (Vannucci, Gebhart); Canadian Light Source, Saskatoon, Saskatchewan (Thompson)
| | - Connie J. Gebhart
- Department of Veterinary Biomedical Sciences (Sampieri, Antonopoulos, Ball, Dowling, Hamilton), Department of Veterinary Pathology (Allen), Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Saskatchewan; Department of Veterinary Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis, California, USA (Pusterla); Department of Veterinary and Biomedical Sciences, College of Veterinary Medicine, University of Minnesota, Saint Paul, Minnesota, USA (Vannucci, Gebhart); Canadian Light Source, Saskatoon, Saskatchewan (Thompson)
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