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Baldauf HM, Weingartner S, Hofmann K, Mitteregger-Kretzschmar G, Popper B, Bönisch MP, Keppler OT. Thermal Inactivation of Carcasses of Mice and Rabbits Infected with Pathogens of Risk Groups Two to Four. J Am Assoc Lab Anim Sci 2021; 60:451-461. [PMID: 34034857 PMCID: PMC9390612 DOI: 10.30802/aalas-jaalas-20-000097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 08/31/2020] [Accepted: 02/05/2021] [Indexed: 11/05/2022]
Abstract
Pathogenesis of viruses or other agents that are infectious to humans is frequently studied in vivo using natural or genetically modified animals. Depending on the risk group of the pathogen, the majority of such experimental studies are performed at least under biosafety level 2 (BSL-2) conditions. Biosafety considerations are therefore critical at all steps of research involving potentially infectious pathogens. Inactivation of pathogens studied using in vitro experiments is usually performed using moist heat sterilization. However, few standardized and validated protocols are currently available for the thermal inactivation of carcasses from laboratory animals infected with such human pathogens. To comply with laboratory biologic safety rules and requirements imposed by regulatory authorities, documentation of appropriate inactivation conditions or use of a validated procedure according to national or international standards is critical. In the current study, we evaluated inactivation protocols in a standard laboratory autoclave for carcasses of either frozen mice or recently terminated rabbits, which were placed inside autoclave bags with bedding material in stainless steel containers. Temperature sensors were placed into different tissues of the carcasses to continuously record temperature in situ and in real-time, and a reference sensor was placed in the autoclave. To achieve pathogen inactivation, autoclaving protocols had to be optimized for both species. Frozen mice required 2 different fractionated prevacuum stages, whereas recently terminated rabbits required 3 different fractionated prevacuum stages. This study provides a template for an evaluation procedure to safely and effectively inactivate mice and rabbits infected with risk group 2 to 4 pathogens.
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Affiliation(s)
- Hanna-Mari Baldauf
- Max von Pettenkofer Institute & Gene Center, Virology, National Reference Center for Retroviruses, Faculty of Medicine, LMU München, Munich, Germany;,
| | - Siegfried Weingartner
- MMM Münchner Medizin Mechanik GmbH, Semmelweisstraße 6, 82152 Planegg/München, Germany
| | - Katharina Hofmann
- Max von Pettenkofer Institute & Gene Center, Virology, National Reference Center for Retroviruses, Faculty of Medicine, LMU München, Munich, Germany
| | | | - Bastian Popper
- Biomedical Center, Core Facility Animal Models, Faculty of Medicine, LMU München, Planegg-Martinsried, Germany
| | - Martin P Bönisch
- MMM Münchner Medizin Mechanik GmbH, Semmelweisstraße 6, 82152 Planegg/München, Germany
| | - Oliver T Keppler
- Max von Pettenkofer Institute & Gene Center, Virology, National Reference Center for Retroviruses, Faculty of Medicine, LMU München, Munich, Germany
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Bicho Augusto JA, Alfarih M, Knott K, Radenkovic D, Chaturvedi N, Hughes AD, Boubertakh R, Moon JC, Weingartner S, Captur G. P415Dark-Blood T1 SAPPHIRE mapping gives cleaner myocardial signal at both 1.5T and 3T. Eur Heart J Cardiovasc Imaging 2019. [DOI: 10.1093/ehjci/jez118.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- J A Bicho Augusto
- University College London, London, United Kingdom of Great Britain & Northern Ireland
| | - M Alfarih
- University College London, London, United Kingdom of Great Britain & Northern Ireland
| | - K Knott
- University College London, London, United Kingdom of Great Britain & Northern Ireland
| | - D Radenkovic
- University College London, London, United Kingdom of Great Britain & Northern Ireland
| | - N Chaturvedi
- University College London, London, United Kingdom of Great Britain & Northern Ireland
| | - A D Hughes
- University College London, London, United Kingdom of Great Britain & Northern Ireland
| | - R Boubertakh
- Barts Health NHS Trust, London, United Kingdom of Great Britain & Northern Ireland
| | - J C Moon
- Barts Health NHS Trust, London, United Kingdom of Great Britain & Northern Ireland
| | - S Weingartner
- University of Minnesota, Minneapolis, United States of America
| | - G Captur
- University College London, London, United Kingdom of Great Britain & Northern Ireland
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Knott K, Alfarih M, Augusto JB, Boubertakh R, Chaturvedi N, Hughes AD, Moon JC, Weingartner S, Captur G. P618Using systolic SAPPHIRE to optimise T1 mapping for thin-walled hearts and arrhythmia. Eur Heart J Cardiovasc Imaging 2019. [DOI: 10.1093/ehjci/jez116.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- K Knott
- University College London, London, United Kingdom of Great Britain & Northern Ireland
| | - M Alfarih
- University College London, London, United Kingdom of Great Britain & Northern Ireland
| | - J B Augusto
- University College London, London, United Kingdom of Great Britain & Northern Ireland
| | - R Boubertakh
- Queen Mary University of London, London, United Kingdom of Great Britain & Northern Ireland
| | - N Chaturvedi
- University College London, London, United Kingdom of Great Britain & Northern Ireland
| | - A D Hughes
- University College London, London, United Kingdom of Great Britain & Northern Ireland
| | - J C Moon
- University College London, London, United Kingdom of Great Britain & Northern Ireland
| | | | - G Captur
- University College London, London, United Kingdom of Great Britain & Northern Ireland
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