Biomaterial Database

Effect of low-dose aspirin on angiotensin II pressor response in human pregnancy. 1987

L Sanchez-Ramos, and M J O'Sullivan, and J Garrido-Calderon

Recent clinical studies have reported a significant reduction in the incidence of pregnancy-induced hypertension after the ingestion of low-dose aspirin. The effect of 80 mg of acetylsalicylic acid on vascular sensitivity to exogenous angiotensin II (Hypertensin, Ciba-Geigy Limited, Basel, Switzerland) was examined in 13 normotensive pregnant patients. The effective pressor dose before treatment (17.4 +/- 2.2 ng/kg/min) (mean +/- SE) was significantly less (p less than 0.001) than that after treatment (35.1 +/- 4.2 ng/kg/min). Low-dose aspirin therapy resulted in an enhancement of the pregnancy-acquired refractoriness to angiotensin II. It can be speculated that prostaglandin synthetase inhibitors at a low dose may alter the thromboxane A2/prostacyclin ratio in favor of the latter.

UI	MeSH Term	Description	Entries
D011247	Pregnancy	The status during which female mammals carry their developing young (EMBRYOS or FETUSES) in utero before birth, beginning from FERTILIZATION to BIRTH.	Gestation,Pregnancies
D001794	Blood Pressure	PRESSURE of the BLOOD on the ARTERIES and other BLOOD VESSELS.	Systolic Pressure,Diastolic Pressure,Pulse Pressure,Pressure, Blood,Pressure, Diastolic,Pressure, Pulse,Pressure, Systolic,Pressures, Systolic
D005260	Female		Females
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000804	Angiotensin II	An octapeptide that is a potent but labile vasoconstrictor. It is produced from angiotensin I after the removal of two amino acids at the C-terminal by ANGIOTENSIN CONVERTING ENZYME. The amino acid in position 5 varies in different species. To block VASOCONSTRICTION and HYPERTENSION effect of angiotensin II, patients are often treated with ACE INHIBITORS or with ANGIOTENSIN II TYPE 1 RECEPTOR BLOCKERS.	Angiotensin II, Ile(5)-,Angiotensin II, Val(5)-,5-L-Isoleucine Angiotensin II,ANG-(1-8)Octapeptide,Angiotensin II, Isoleucine(5)-,Angiotensin II, Valine(5)-,Angiotensin-(1-8) Octapeptide,Isoleucine(5)-Angiotensin,Isoleucyl(5)-Angiotensin II,Valyl(5)-Angiotensin II,5 L Isoleucine Angiotensin II,Angiotensin II, 5-L-Isoleucine
D001241	Aspirin	The prototypical analgesic used in the treatment of mild to moderate pain. It has anti-inflammatory and antipyretic properties and acts as an inhibitor of cyclooxygenase which results in the inhibition of the biosynthesis of prostaglandins. Aspirin also inhibits platelet aggregation and is used in the prevention of arterial and venous thrombosis. (From Martindale, The Extra Pharmacopoeia, 30th ed, p5)	Acetylsalicylic Acid,2-(Acetyloxy)benzoic Acid,Acetysal,Acylpyrin,Aloxiprimum,Colfarit,Dispril,Easprin,Ecotrin,Endosprin,Magnecyl,Micristin,Polopirin,Polopiryna,Solprin,Solupsan,Zorprin,Acid, Acetylsalicylic
D013997	Time Factors	Elements of limited time intervals, contributing to particular results or situations.	Time Series,Factor, Time,Time Factor