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Gynecol Invest. 1975;6(6):329-36. doi: 10.1159/000301530.

Hormonal steroids: effects on the vascular system.

Gynecologic investigation

J Solash, R Perez, J S Keates, N Ramasamy, H Stein, D Troyansky, E Ateyeh, J R Jones, S Srinivasan, P N Sawyer

PMID: 1213600 DOI: 10.1159/000301530

Abstract

An increase in the incidence of thromboembolic disorders has been associated with oral contraceptive use, though the causative mechanisms remain unclear. Our studies indicate that the contraceptive steroids, irrespective of the intermediary metabolic processes involved, cause changes in the surface charge characteristics of the blood vessel wall and blood cells in the following cases: (i) in experiments using dogs, the hormonal steroids result in a greater reduction in the pore surface charge of veins than in arteries; (ii) in rats, the current induced mesenteric occlusion times are significantly lowered following administration of combined contraceptives steroids; (iii) in humans, the electrophoretic mobilities of erythrocytes and platelets from women taking Ovral and Demulen are lower than in controls, and (iv) there is no significant alteration of plasma coagulation times of women who are on injectable progestin therapy. Demulen and Ovral appear to result in a slight decrease in activated partial thromboplastin times compared to controls.

Keywords: Animals, Laboratory; Biology; Blood Coagulation Effects; Clinical Research; Contraception; Contraceptive Agents; Contraceptive Agents, Estrogen; Contraceptive Agents, Female; Contraceptive Agents, Progestin; Contraceptive Methods--side effects; Dimethisterone; Endocrine System; Estradiol; Estrogens; Ethinyl Estradiol; Ethynodiol Diacetate; Family Planning; Hematological Effects; Hemic System; Hormones; Injectables; Medroxyprogesterone Acetate; Mestranol; Norethindrone; Oral Contraceptives, Combined; Oral Contraceptives--side effects; Physiology; Research Methodology; Women

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