Age-related changes in contractions of chicken aorta and ischiadic artery
Autor: | Takiko Takahashi, Asaki Abe, Yasuhiro Kondo, Yoshiki Suzuki, Kazumasa Ohtsuki |
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Rok vydání: | 2002 |
Předmět: |
Sustained contraction
Aorta medicine.medical_specialty Vascular smooth muscle Contraction (grammar) business.industry General Medicine Anatomy medicine.anatomical_structure Smooth muscle medicine.artery Internal medicine Age related cardiovascular system medicine Cardiology Thoracic aorta General Agricultural and Biological Sciences business Artery |
Zdroj: | Animal Science Journal. 73:309-311 |
ISSN: | 1740-0929 1344-3941 |
DOI: | 10.1046/j.1344-3941.2002.00042.x |
Popis: | The characteristics of the contraction of vascular smooth muscle were examined in thoracic aorta and ischiadic artery of chickens aged 3, 6, 10 and 18 weeks. High K+ solution induced a sustained contraction in smooth muscle preparations of aorta and ischiadic artery in vitro. The contraction of the ischiadic artery became greater with age, whereas the contraction of the aortic preparation did not. In the ischiadic artery, the magnitude of the contraction divided by the weight of the muscle preparation was constant at all ages studied. However, those in the aortic preparation decreased with age. These results suggest that the changes in the contractile responses of vascular smooth muscle owing to the age of chickens vary widely according to the preparations of blood vessels, and that the functional smooth muscle cells in the thoracic aorta of chicken do not increase with age. |
Databáze: | OpenAIRE |
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