| Autor: |
Yui Kobayashi, Eri Koibuchi, Keishoku Sakuraba, Yoshio Suzuki |
| Jazyk: |
angličtina |
| Rok vydání: |
2024 |
| Předmět: |
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| Zdroj: |
Physiological Reports, Vol 12, Iss 20, Pp n/a-n/a (2024) |
| Druh dokumentu: |
article |
| ISSN: |
2051-817X |
| DOI: |
10.14814/phy2.70099 |
| Popis: |
Abstract Human salivary amylase secretion increases in response to stress; the activity has been reported to rise significantly with high‐intensity exercise. The human salivary amylase gene (AMY1) has copy number variation, with the copy number correlating with salivary amylase activity. However, the relationship between individual AMY1 copy number and salivary amylase activity in response to exercise remains unclear. In this study, we investigated AMY1 copy number and fluctuations in amylase activity in 42 healthy university students (25 males and 17 females). Participants engaged in intermittent round‐trip interval training on a basketball court. Saliva samples were collected pre‐ and post‐exercise to measure amylase activity. DNA was extracted from the oral mucosa, and AMY1 copy number was quantified using RT‐PCR. Results showed a significant increase in amylase activity postexercise. Additionally, amylase activity pre‐ and post‐exercise was positively correlated with AMY1 copy number. The generalize linear model showed that the exercise‐induced increase in amylase activity per AMY1 gene was negatively related to the AMY1 copy number and aerobic fitness. Gender has no effect on amylase activity. These results suggest a different mechanism for the constitutive and exercise‐induced amylase secretion, while aerobic fitness may be independently involved in the secretion. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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