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Open Access Vacuum-Cleaner Noise and Acute Stress Responses in Female C57BL/6 Mice (Mus musculus)

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Audiogenic stress is a well-documented phenomenon in laboratory rodents. Despite the recommendation in the Guide for the Care and Use of Laboratory Animals to consider noise a concern in the animal facility, only a small body of literature empirically addresses the effects of facility noise on laboratory rodents, particularly mice. The objective of this study was to determine whether facility noise generated by a vacuum cleaner induces an acute stress response in a commonly used strain of laboratory mouse under common housing conditions. In each of 2 experiments, 10 young adult, female C57BL/6Cr mice were exposed for 1 h to noise produced by a vacuum cleaner, and 10 control mice were not. In the first experiment, fecal samples were collected to measure concentrations of fecal corticosterone metabolites just before and 2, 4, 6, 8, 10, 14, 24, and 32 h after noise exposure. In the second experiment, stress-sensitive behavioral tests were performed 2 d before, immediately after, and 24 h after noise exposure. Physiologic and behavioral measurements indicated that vacuum cleaner noise did not cause an acute stress response in the noise-exposed mice but may have affected the diurnal variation of their corticosterone levels. These findings could contribute to the development of best practices in noise-control protocols for animal facilities.

Document Type: Research Article

Affiliations: 1: Office of Laboratory Animal Care, University of California - Berkeley, Berkeley, California 2: Department of Biomedical Sciences/Biochemistry, University of Veterinary Medicine, Vienna, Austria 3: Department of Public Health, University of California - Berkeley, Berkeley, California 4: Department of Public Health, University of California - Berkeley, Berkeley, California; Department of Psychology, University of California - Berkeley, Berkeley, California

Publication date: May 1, 2010

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  • The Journal of the American Association for Laboratory Animal Science (JAALAS) serves as an official communication vehicle for the American Association for Laboratory Animal Science (AALAS). The journal includes a section of refereed articles and a section of AALAS association news. The mission of the refereed section of the journal is to disseminate high-quality, peer-reviewed information on animal biology, technology, facility operations, management, and compliance as relevant to the AALAS membership. JAALAS accepts research reports (data-based) or scholarly reports (literature-based), with the caveat that all articles, including solicited manuscripts, must include appropriate references and must undergo peer review.

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