Abstract
BAS is a protein generated by aortic rings isolated from rats. Our previous results clearly established that BAS inhibits platelet aggregation and modifies vascular tone. We have now examined the effect of separated segments of thoracic aorta and the effect of sex on the release of the BAS and PGI 2. We evaluated three different segments of thoracic aorta: A= aortic arch, B= the upper segment and C= the lowest segment of the thoracic aorta. We measured the release of BAS and PGI 2 from them. The BAS production increased in the first segment (A) when compared with the other two (B and C), whilst PGI 2 production was the same along the thoracic aorta. On the other hand female and male thoracic aorta produced the same levels of BAS and 6-keto PGF 1α.
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