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Geneva, WHO, 1984 Dec. ix, 152 p.88 recommendations were formulated by the International Conference on Population held in Mexico City in 1984. 4 of these dealt specifically with research requirements in the population field and are reproduced in this report in their entirety. As a result of the changing perspectives and requirements of the scientific fields in which the Special Program of Research, Development and Research Training in Human Reproduction operates and taking into account the various suggestions resulting from recent reviews of the Program, several new developments have occurred. First is the attempt to distinguish more clearly between activities related to research and development and those related to resources for research. These 2 distinct but closely connected activities will be reorganized to interact in a complementary fashion. In the research and development component, the most notable changes relate to the creation of new Task Forces on the Safety and Efficacy of Fertility Regulating Methods and on Behavioral and Social Determinants of Fertility Regulation. The Program has been actively promoting coordination with other programs which support and conduct research in human reproduction. The research and development section of this report provides a technical review of the activities and plans of the various task forces, covering the following: new and improved methods of fertility regulation (long-acting systemic methods, oral contraceptives, post-ovulatory methods, IUDs, vaccines, plants, male methods, female sterilization, and natural methods), safety and efficacy of fertility regulating methods, infertility, and service and psychosocial research. The section devoted to resources for research describes some features of the network of centers, reviews the Program's institution strengthening activities in the different regions, and also considers research training and the program of standardization and quality control of laboratory procedures. The section covering special issues in drug development focuses on relations with industry, patents, and the role of the Special Program in the drug regulatory process.
In: Zatuchni GI, Goldsmith A, Shelton JD, Sciarra JJ, ed. Long-acting contraceptive delivery systems. Philadelphia, Pa., Harper and Row, 1984. 621-7. (PARFR Series on Fertility Regulation)Progestasert (Alza Corporation, Palo Alto, California) achieves relatively high rates of contraceptive effectiveness through the release of a sex hormone--progesterone. Currently, it is recommended that Progestaserts be replaces every 12 months and most copper-bearing IUDs, every 3 years. To improve on Progestasert's 1-year replacement interval, Alza Corporation modified the Progestasert by increasing the amount of pregesterone contained in the IUD (from 38 to 52 mg) without changing the average daily release of 65mg. This long-acting progestasert, called the Intrauterine Progesterone Contraceptive System (IPCS), was designed to have a useful life of 3 years before replacement was required. The IPCS is identical in appearance to the Progestasert, and its contraceptive action in the same as that of the Progestasert. The effectiveness of either is through the effects of an intrauterine foreign body and through the effects of the progesterone on the encometrium. The IPCS system was designed to provide maximum contraceptive protection over a 3-year period and to reduce IUD-related bleeding, pain, and expulsion problems. Results from Alza monitored trials of the IPCS in the US and Mexico indicate that the cumulative life-table pregnancy rate increased from 3.6/100 women after 25 to 30 months of use to 10.6/100 women after 30 to 36 months of use. Laboratory evaluations of removed IPCS devices indicates that after 30 months of IPCS use the release rate of progesterone may not be adequate to prevent pregnancy effectively. The World Health Organization (WHO) evaluated the IPCS in 2 multiclinic studies. Postinsertion complications and complaints for the IPCS and T Cu-200 are shown. The include cervical perforation, ectopic pregnancy, pelvic inflammatory disease, dysmenorrhea, bleeding, spotting, and pelvic pain. The IPCS seemingly offers no particular advantages for use in developing countries.