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The purpose of this study was twofold: 1) to determine whether the failure of rats with chronic renovascular hypertension to respond to the angiotensin II antagonist (AIIA) with a decrease in mean blood pressure (BP) was dur to the agonistic effect of the antagonist; and, 2) if this was not the case, to examine whether a positive sodium balance impaired the(More)
High levels of plasma homocysteine are associated with an increased risk of many health conditions influenced by both environmental and genetic factors. The objective of this study was to provide the geographical distribution of folate pathway genetic polymorphisms in Mexico and the comparison with the reported frequencies in different continental(More)
Angiotensin tachyphylaxis is rapidly induced in the mesenteric vascular circuit of the rat perfused with a saline solution. there is crossed tachyphylaxis among angiotensins (AI, AII, and AIII). The angiotensin antagonist Sar 1-Ileu 8-AII is ineffective when the vascular preparation is previously rendered tachyphylactic to AII, showing that the AII(More)
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