|
1
|
Vidal E, Burgaya J, Michelet L, Arrieta-Villegas C, Cantero G, de Cruz K, Tambosco J, Di Bari M, Nonno R, Boschiroli ML, Pérez de Val B. Experimental Mycobacterium microti Infection in Bank Voles ( Myodes glareolus). Microorganisms 2022; 10:135. [PMID: 35056584 PMCID: PMC8779978 DOI: 10.3390/microorganisms10010135] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Revised: 12/16/2021] [Accepted: 12/18/2021] [Indexed: 11/20/2022] Open
Abstract
Voles are maintenance hosts of Mycobacterium microti. In line with the goal to eradicate tuberculosis (TB) in livestock, the role of this mycobacteria needs to be assessed since it might interfere with current M. bovis/M. caprae surveillance strategies. To better understand the pathogenesis of TB in voles, an experimental infection model was set up to reproduce M. microti infection in laboratory Bank voles (Myodes glareolus). Two infection routes (intragastric and intraperitoneal) and doses (105 and 106 CFU/0.1 mL) were assessed. Voles were culled at different post-infection time points. Serology, histopathology, acid-fast bacilli staining, qPCR, and mycobacterial culture from tissues were performed. In addition, qPCR from feces and oral swabs were conducted to assess bacterial shedding. The model allowed us to faithfully reproduce the disease phenotype described in free-ranging voles and characterize the pathogenesis of the infection. Most animals showed multifocal and diffuse granulomatous lesions in the liver and spleen, respectively. Less frequently, granulomas were observed in lungs, lymph nodes, muscles, and salivary gland. Mycobacterial DNA was detected in feces from a few animals but not in oral swabs. However, one contact uninfected vole seroconverted and showed incipient TB compatible lesions, suggesting horizontal transmission between voles.
Collapse
Affiliation(s)
- Enric Vidal
- IRTA, Centre de Recerca en Sanitat Animal (CReSA, IRTA-UAB), Campus UAB, 08193 Bellaterra, Spain; (E.V.); (J.B.); (C.A.-V.); (G.C.)
| | - Judit Burgaya
- IRTA, Centre de Recerca en Sanitat Animal (CReSA, IRTA-UAB), Campus UAB, 08193 Bellaterra, Spain; (E.V.); (J.B.); (C.A.-V.); (G.C.)
| | - Lorraine Michelet
- Animal Health Laboratory, National Reference Laboratory for Tuberculosis, Paris-Est University, Anses, 94700 Maisons-Alfort, France; (L.M.); (K.d.C.); (J.T.); (M.L.B.)
| | - Claudia Arrieta-Villegas
- IRTA, Centre de Recerca en Sanitat Animal (CReSA, IRTA-UAB), Campus UAB, 08193 Bellaterra, Spain; (E.V.); (J.B.); (C.A.-V.); (G.C.)
| | - Guillermo Cantero
- IRTA, Centre de Recerca en Sanitat Animal (CReSA, IRTA-UAB), Campus UAB, 08193 Bellaterra, Spain; (E.V.); (J.B.); (C.A.-V.); (G.C.)
| | - Krystel de Cruz
- Animal Health Laboratory, National Reference Laboratory for Tuberculosis, Paris-Est University, Anses, 94700 Maisons-Alfort, France; (L.M.); (K.d.C.); (J.T.); (M.L.B.)
| | - Jennifer Tambosco
- Animal Health Laboratory, National Reference Laboratory for Tuberculosis, Paris-Est University, Anses, 94700 Maisons-Alfort, France; (L.M.); (K.d.C.); (J.T.); (M.L.B.)
| | - Michelle Di Bari
- Department of Food Safety, Nutrition and Veterinary Public Health, Istituto Superiore di Sanità, 00161 Rome, Italy; (M.D.B.); (R.N.)
| | - Romolo Nonno
- Department of Food Safety, Nutrition and Veterinary Public Health, Istituto Superiore di Sanità, 00161 Rome, Italy; (M.D.B.); (R.N.)
| | - Maria Laura Boschiroli
- Animal Health Laboratory, National Reference Laboratory for Tuberculosis, Paris-Est University, Anses, 94700 Maisons-Alfort, France; (L.M.); (K.d.C.); (J.T.); (M.L.B.)
| | - Bernat Pérez de Val
- IRTA, Centre de Recerca en Sanitat Animal (CReSA, IRTA-UAB), Campus UAB, 08193 Bellaterra, Spain; (E.V.); (J.B.); (C.A.-V.); (G.C.)
| |
Collapse
|