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At least 199 records · Page 11Linked to original sources
PubMed1990

The effects of different formulations of oral contraceptive agents on lipid and carbohydrate metabolism.

BACKGROUND: Oral contraceptives can induce changes in lipid and carbohydrate metabolism similar to those associated with an increased risk of coronary heart disease, including increased serum triglyceride, low-density lipoprotein (LDL) cholesterol, and insulin levels and decreased high-density lipoprotein (HDL) cholesterol levels. In this study, we examined whether modification of the type or dose of progestin in oral-contraceptive preparations diminishes these changes. METHODS: We measured plasma lipoprotein levels and performed oral glucose-tolerance tests in a cross section of 1060 women who took one of nine types of oral contraceptives for at least three months and 418 women who took none. Seven of the contraceptive formulations contained various doses and types of progestin: levonorgestrel in low (150 micrograms), high (250 micrograms), and triphasic (50 to 125 micrograms) doses; norethindrone in low (500 micrograms), high (1000 micrograms), and triphasic (500 to 1000 micrograms) doses; and a new progestin, desogestrel, in one dose (150 micrograms). All seven contained 30 to 40 micrograms of ethinyl estradiol. Two additional formulations contained progestin alone. RESULTS: As compared with controls, women taking combination drugs did not have increased serum total cholesterol levels but did have increases of 13 to 75 percent in fasting triglyceride levels. Levels of LDL cholesterol were reduced by 14 percent in women taking the combination containing desogestrel and by 12 percent in those taking low-dose norethindrone. Levels of HDL cholesterol were lowered by 5 percent and 16 percent by the combinations containing low-dose and high-dose levonorgestrel, respectively; these decreases were due to reductions of 29 percent and 43 percent, respectively, in the levels of HDL subclass 2. The combination pill containing high-dose norethindrone did not affect HDL cholesterol levels, whereas that containing low-dose norethindrone increased HDL cholesterol levels by 10 percent. The desogestrel combination increased HDL cholesterol levels by 12 percent. Levels of apolipoproteins A-I, A-II, and B were generally increased by combination drugs. Depending on the dose and type of progestin, combination drugs were associated with plasma glucose levels on the glucose-tolerance test that were 43 to 61 percent higher than in controls, insulin responses 12 to 40 percent higher, and C-peptide responses 18 to 45 percent higher. Progestin-only formulations had only minor metabolic effects. CONCLUSIONS: The appropriate dose and type of progestin may reduce the adverse effects of oral contraceptives on many metabolic markers of risk for coronary heart disease. Progestin-only formulations or combinations containing desogestrel or low-dose norethindrone were associated wtih the most favorable profiles.

Adolescent↗
PubMedDate not supplied

Exacerbation of adenomyosis symptomatology by estrogen-progestin therapy: a case report and histopathological observations.

The present case report illustrates the hormonal sensitivity of adenomyosis. Administration of an estrogen-progestin combination for what was felt to be symptomatic endometriosis resulted in exacerbation of symptoms and growth of adenomyomas. Histopathologic examination of the hysterectomy specimen revealed a pattern of decidualization previously unreported, but consistent with current theories of experimental in vivo and in vitro decidua formation.

Adult↗
PubMed1990

Clinical experience with the progestogen-only pill.

Experience with the progestogen-only pill (POP) in a family planning clinic is presented. From the clinic records, 408 women were identified who had opted to use a POP. Of these, 50 women had used the POP during lactation and these were excluded from the analysis. The remaining 358 women used the POP for up to 150 months, giving a total of 18,125 women-months of use. Three pregnancies occurred, giving a Pearl Index of 0.2 per 100 women-years. Non-menstrual side effects were minor and were reported by 77 women. For the women who discontinued the POP, the main reason was menstrual irregularity (47.5%). However, despite the long-term use by most of the women, almost 40% maintained a mostly regular menstrual pattern. Our findings suggest that the POP provides a very acceptable method of oral contraception for many women and that it should be more actively promoted.

Adult↗
PubMed1980

[Glucose tolerance on long-term treatment with a progestogen (etynodiol diacetate) (author's transl)].

Continuous long-term treatments with progestogens are able to bring about an hyperinsulinic reaction, which up till now has been considered to be due to a peripheral anti-insulin effect. Isolating the levels of immuno-reactive plasma insulin and of human C-peptide at the same time when loads of glucose and of tolbutamide are given after one another would seem to demonstrate that there is a primitive beta-islet of Langerhans origin for this hyperinsulinaemia. These results show that it is safe to prescribe etynodiol diacetate to "normal" patients as well as to "diabetic" patients.

Adult↗
PubMed1979

Effect of oral contraceptives on folate economy--a study in female rats.

Daily administration of one tenth of a tablet of Ovulen-50 (ethinodiol diacetate, 1 mg, ethinylestradiol, 50 microgram) to adult female rats resulted in an increase in the liver and kidney folate levels, increased urinary excretion of folate and a fall in serum folate while red blood cell folate levels remained unaffected. The tissue folate levels did not indicate adverse effect of OCA on folate economy of the body.

Animals↗
PubMed1979

[Transformation of 19-norgestagens to estrogens by rumen microorganisms].

The 19-norgestagens norethisterone acetate (17 alpha-ethinyl-4-oestren-17 beta-ol-3-on-17-acetate), ethinodiol diacetate (17 alpha-ethinyl-4-oestren-3 beta, 17 beta-diol-3, 17-diacetate), and norgestrol (17 alpha-ethinyl-18-methyl-4-oestren-17 beta-ol-3-on) are transformed to ethinyloestradiol or 18-methyl homologue by microorganisms of cattle rumen. Such transformation of steroid gestagens to oestrogens is likely to offer an explanation for the occurrence of oestrogen effects which had been observed during synchronised oestrus of cattle following oral application of 19-norgestagens.

Animals↗