Steroid contraceptives and plasma carotenoids.
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Serum lipid and apoprotein levels were determined in fasting women after long-term use (5-12 years) of Depo Provera, Orgametril, Ortho Novum SQ, Binordiol, Microgynon-50, and Ministat. Compared with matched controls, pure progestogens (Depo Provera and Orgametril) caused a moderate decrease of TG, HDL chol, and Apo A1, whereas estrogen-dominant oral contraceptives (Ortho Novum SQ) increased the same parameters. The effects of long-term use of hormonal contraception on lipids did not differ from those predicted from short-term (6 months) studies.
In 1984, both the United Kingdom and the United States received recommendations from panels of experts specifically convened to consider the merits of Depo-Provera (depot medroxyprogesterone acetate [DMPA]) as a long-term contraceptive agent. This study compares the final reports written by these panels. We explore why, despite access to essentially the same data, the U.K. panel recommended marketing approval but the U.S. Public Board of Inquiry did not. We conclude that differing national policies helped shape the interpretation of the data and thus the divergent outcomes.
The effects of Depoprovera and Deladroxone were studied in humans, on certain milk components as well as on the growth of the nursed infants. Both drugs caused reduction in milk yield. Both drugs caused an increase in the concentration of milk total proteins, however. Depoprovera caused an increase while Deladroxone caused a decrease in the total amount of milk proteins per feed. Depoprovera showed no effect while Deladroxone caused an increase in the concentration of milk lipids; however, both drugs caused reduction in the total amount of milk lipids per feed. Both drugs showed no effect on the concentration of milk lactose, but caused reduction in the total amount of milk lactose per feed. The percentage increase in weight of nursed infants was decreased by Depoprovera, but not affected by Deladroxone.
The preliminary results of a study of the incidence of breast cancer in relation to use of depot-medroxyprogesterone acetate (DMPA) are presented. The findings are based on data from three participating centres in Thailand, and one each in Kenya and Mexico. A relative risk for breast cancer of 0.7 was observed in women who had ever used DMPA; this was not statistically significant. Although no consistent decrease in risk with duration of use was observed, the lowest relative risk (0.5) was observed in women who had used DMPA for three or more years. These findings are based on small numbers and must be considered preliminary. However, they provide no evidence that DMPA increases the risk of breast cancer, and suggest that it may exert a protective effect, particularly in long-term users.
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Long-term effects of injection Depo-Provera (depo-medroxyprogesterone acetate) on carbohydrate and lipid metabolism were studied in 157 women who were treated continuously for a mean duration of 43.3 months. The patients were matched with 162 controls for race, age, parity and height. Glucose tolerance was impaired with higher intolerance at longer duration. Glucose areas were significantly higher at 48 and 60 months of injection. Insulin levels were also significantly decreased at 30 minutes and increased at 150 minutes but the area was normal. Triglycerides were initially decreased, being significant at 36 months (p less than 0.001) and returned to normal at 60 months while cholesterols were significantly higher at 24 and 36 months (p less than 0.05) and 60 months (p less than 0.001). In view of these findings, Depo-Provera may have an advantage over oral pills on a short term basis as there are less alterations in carbohydrate and lipid metabolism.
The continuation contraceptive practise of 3,293 I.U.D., 1985 pill and 749 depo-provera acceptors was analysed by a survey of family planning records. The proportions of grand multiporae were 40.3%, 24.2% and 40.4% in the three groups. Pap smears were taken in from 12 to 38.5% of acceptors and the proportions of pathological smears varied from 8.9 to 13.3%. The percentages of acceptors who attended only once more were 11% (I.U.D.), 18.1% (pill) and 25.1% (d-p.), Pregnancy rates were for the I.U.D., 1.7 per Hundred Woman Years, for the 2.1 per H.W.Y. and for d-p, 0.4, per H.W.Y. Temporary interruptions of the contraceptive methods were common with the pill and d-p. In the long run the I.U.D. is superior to the other temporary methods of contraceptives. Continuation rates with the I.U.D. were 89.9% after one year and 70.9% after five years (similar rates for the pill were 55% and 16.5% and for d-p 50.5% and 10.3%). The importance of a proper pelvic examination and the need to have all methods available for any individual receiving contraceptives are emphasized in the discussion. Tubal ligations should always be considered as an alternative to the temporary methods of contraceptives in ground multiporae and others at special risk from further pregnancies.
Preliminary results of a study of the possible relationship of depot-medroxy-progesterone acetate (DMPA) to invasive cervical cancer are presented. The findings are based on data from three participating centres in Thailand and one in Mexico. A relative risk for cervical cancer of 1.2 was observed in women who had ever used DMPA; this was not statistically significant. No consistent increase in risk with duration of use was observed, although a relative risk of 2 was found in women who had used DMPA for more than 5 years. This observed increase in risk was confined to women who were aged under 46 years or who had first been exposed to DMPA before 30 years of age. These findings are based on small numbers of subjects, and may not represent a causal relationship.
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We analyzed hospitalizations among 26,507 young black women who attended a large metropolitan family planning clinic between 1968 and 1976. Age-adjusted hospitalization rates were compared for women using oral contraceptives, intrauterine contraceptive devices, and depot medroxyprogesterone acetate. Overall, intrauterine contraceptive device and depot medroxyprogesterone acetate users were hospitalized at about the same rate, while women using oral contraceptives were hospitalized 30% less often. The oral contraceptive users were not hospitalized at a higher rate for circulatory disease. Compared to women using intrauterine contraceptive devices, users of oral contraceptives and depot medroxyprogesterone acetate were less likely to be hospitalized for benign breast disease (rate ratios = 0.5 and 0.2, respectively, with 95% confidence limits of 0.3 to 0.7 and 0.1 to 0.5) and for pelvic inflammatory disease. Women were four times as likely to be using depot medroxyprogesterone acetate when they were hospitalized with carcinoma in situ of the cervix, but depot medroxyprogesterone acetate users with at least 3 years of use were less likely to be hospitalized for carcinoma in situ than comparable groups of oral contraceptive and intrauterine contraceptive device users.
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