title: Effects of antihypertensive treatment on platelet function in essential hypertension.
abstract: To evaluate the effect of antihypertensive therapy on platelet activation in essential hypertension, the plasma levels of beta-thromboglobulin (beta-TG) were examined in 45 patients with essential hypertension and 20 age-matched normotensive control subjects. Hypertensive patients were assigned to monotherapy with one of five different antihypertensive drugs for 6 months, and the change of plasma levels of beta-TG was reexamined after the completion of the monotherapy. The plasma beta-TG increased in hypertensive patients compared with levels in normotensive control subjects. Monotherapy with each drug resulted in sufficient blood pressure control in all hypertensive patients. The plasma beta-TG decreased significantly after monotherapy with an alpha-blocker or an angiotensin-converting enzyme inhibitor (ACEI). The plasma beta-TG increased with the use of a diuretic but did not change with the use of a beta-blocker or calcium antagonist. The platelet activation observed in patients with essential hypertension is reversed by monotherapy with an alpha-blocker or an ACEI. It is possible that these drugs reduce the development of hypertensive vascular complications due to suppression of platelet activation in patients with essential hypertension.
authors.affiliation: Department of Medicine and Health Care Center, Nippon Telegram and Telephone, Kanto Medical Center, Tokyo, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Gomi
authors.forename: T
authors.initials: T
authors.lastname: Ikeda
authors.forename: Y
authors.initials: Y
authors.lastname: Shibuya
authors.forename: R
authors.initials: R
authors.lastname: Nagao
mesh_terms: D000317:Adrenergic alpha-Antagonists / Q000627:therapeutic use; D000806:Angiotensin-Converting Enzyme Inhibitors / Q000627:therapeutic use; D000959:Antihypertensive Agents / Q000627:therapeutic use*; D001792:Blood Platelets / Q000187:drug effects* / Q000502:physiology*; D001794:Blood Pressure / Q000187:drug effects; D002216:Captopril / Q000627:therapeutic use; D004232:Diuretics / Q000627:therapeutic use; D005260:Female; D006801:Humans; D006973:Hypertension / Q000097:blood* / Q000188:drug therapy* / Q000503:physiopathology; D008297:Male; D008875:Middle Aged; D011224:Prazosin / Q000031:analogs & derivatives* / Q000627:therapeutic use; D012016:Reference Values; D014237:Trichlormethiazide / Q000627:therapeutic use; D001620:beta-Thromboglobulin / Q000032:analysis
chemical_list: D000317:Adrenergic alpha-Antagonists; D000806:Angiotensin-Converting Enzyme Inhibitors; D000959:Antihypertensive Agents; D004232:Diuretics; D001620:beta-Thromboglobulin; C041226:Terazosin; D002216:Captopril; D014237:Trichlormethiazide; D011224:Prazosin