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- W2055676124 abstract "1 There is a relationship between hypertension, insulin resistance and an altered plasmatic lipid profile known as 'metabolic syndrome'. Fructose (F) overload induces in the rat a mild hypertension associated with metabolic alterations such as hyperglycemia, hypertriglyceridemia and insulin resistance, resembling such syndrome. 2 Prostanoids (PR), metabolites of arachidonic acid, include vasoactive substances synthesized and released by the vessel wall. An altered pattern of PR release has been previously found in mesenteric vessels of experimental diabetic rats. 3 This study analyzed the effects of F-overload during different periods (4, 9, 15 and 22 weeks) on PR release in aorta (A) and mesenteric vascular beds (MVB). Animals received tap water (control) or F solution (10% w/v) to drink. 4 Rats with F overload showed significantly higher systolic blood pressure, glycemia and triglyceridemia than controls; but no differences in this parameters were found among periods of treatment either in controls or experimental animals. 5 In A, prostacyclin was decreased at 9, 15 and 22 weeks of treatment when compared to 4 weeks and controls. In MVB, prostacyclin showed different patterns of release in the studied periods of F overload. Prostaglandin (PG) E(2) diminish in MVB at the same extent in all periods. No changes were observed in A. The vasoconstrictor thromboxane was elevated in the MVB at 9 weeks. PGF(2)alpha, also a vasoconstrictor, remains unchanged. 6 In conclusion, F overload provokes in the rat a decrease in the vascular production of vasodilator PR and, in one of the studied periods, an increase in the release of the vasoconstrictor thromboxane, leading to a negative imbalance in the prostacylin/thromboxane ratio. This could be involved in the blood pressure alterations found in this experimental model of metabolic syndrome." @default.
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- W2055676124 date "2009-07-01" @default.
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- W2055676124 title "Time course of vascular prostanoid production in the fructose-hypertensive rat" @default.
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- W2055676124 doi "https://doi.org/10.1111/j.1474-8673.2009.00433.x" @default.
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