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PubMed1976

Mesenteric venous thrombosis associated with oral contraceptives: a case report.

Small-bowel infarction resulting from mesenteric venous thrombosis is a rare but life-threatening complication to which young women taking oral contraceptives are liable. The patient characteristically presents with an "acute abdomen" after a variable prodromal period of vague abdominal pain. The correct diagnosis can be made from the macroscopic appearance at laparotomy, provided the surgeon is alert to the condition. An accurate diagnosis is important, as anticoagulation measures must be instituted early to counter the commonly associated thromboembolic phenomena.

Adult↗
PubMed1975

Investigation of the serum level of pregnancy-associated alpha2-globulin during contraceptive treatment by means of radial immunodiffusion method.

The serum level of pregnancy-associated alpha2-globulin was studied in 70 healthy women taking three different types of oral contraceptives [40 Bisecurin: containing 1.0 mg of Ethynodiol diaceticum +0.05 mg Ethynilestradiol; 20 Infecundin: containing 2.5 mg of Norethynodrel +0.1 mg of Mestranol; 10 Cervicundin: containing of 0.5 mg Ethynodiol diaceticum]. Elevated amounts of serum level of pregnancy associated alpha2-globulin could be detected in 37 of the 40 women taking Bisecurin and in all 20 taking Infecundin. Cervicundin however, failed to induce any change in the serum protein pattern of the 10 subjects studied. Serum levels of pregnancy-associated alpha2-globulin were higher in the Infecundin-taking (53 mg %), than in the Bisecurin-taking group (29 mg %). This shows the oestrogen dependency of the pregnancy-associated alpha2-globulin and points to a possible implication of this globulin in the immunosuppressive processes.

Alpha-Globulins↗
PubMed1990

Oral contraceptives, lipoproteins, and atherosclerosis.

A nonhuman primate model was developed to study the effects of oral contraceptives on lipoproteins and atherosclerosis. Cynomolgus macaques were selected because of their susceptibility to diet-induced atherosclerosis and because their reproductive physiology, menstrual cycle, and circulating sex hormone patterns are similar to those of human females. The first study compared a vaginal ring containing levonorgestrel and estradiol with an oral contraceptive containing norgestrel and ethinyl estradiol. A second study compared two oral combinations: norgestrel-ethinyl estradiol and ethynodiol diacetate-ethinyl estradiol. As predicted, use of all the contraceptives led to lowering of high-density lipoprotein cholesterol levels. However, contrary to what might be expected, use of the ethinyl estradiol-containing oral contraceptives did not lead to an increase in the prevalence or extent of atherosclerosis. We concluded that ethinyl estradiol neutralized the atherogenic influence of the progestin component of oral contraceptives.

Animals↗