Acid hydrolase activity in tissues of mice after physical stress |
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| Affiliation: | 1. Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China;2. Shenzhen College of Advanced Technology, University of Chinese Academy of Sciences, Shenzhen, China;3. School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332, United States;4. Department of Electronics Engineering, The Chinese University of Hong Kong, Hong Kong, China;1. Department of Oncology, Rudong County Hospital of Traditional Chinese Medicine, Rudong, Jiangsu, 226400, China;2. The First Clinical Medical College, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, 210046, China;1. Instituto Superior de Engenharia de Coimbra − IPC, Coimbra, Portugal;2. Faculdade de Psicologia e de Ciências da Educação − UP, Porto, Portugal;3. CIIE − Centro de Investigação e Intervenção Educativas, Portugal |
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| Abstract: | - 1.1. The activities of β-glucuronidase and cathepsin D and the protein concentration were assayed from brain, kidney, liver, cardiac muscle and skeletal muscle (m. rectus femoris) samples from mice (Mus musculus) 1, 3, and 6 days after intermittent exhaustive (duration 100–145min) and submaximal prolonged (duration 9 hr) running on treadmill.
- 2.2. The activity of β-glucuronidase in skeletal muscle strongly increased being the highest 3 days after both exertions. Cathepsin D activity also slightly increased. In cardiac muscle β-glucuronidase activity was unaffected. Cathepsin D activity slightly increased 3 days after intermittent exhaustive exercise.
- 3.3. The specific activities of β-glucuronidase and cathepsin D in the liver increased 1 day after the both exertions. Simultaneously the protein concentration decreased. In the kidney β-glucuronidase activity and protein concentration were unaffected but cathepsin D activity decreased 1 day after intermittent exhaustive exercise.
- 4.4. In the brain protein concentration transiently decreased 3 days after the exertions. β-Glucuronidase activity transiently decreased 1 day after intermittent exercise thereafter increasing 6 days afterwards above the control level. Cathepsin D activity decreased 1 day after intermittent exercise but was unaffected after prolonged submaximal exercise.
- 5.5. Physical stress affected to varying extent the acid hydrolase activities in all organs studied.
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