Atrophy of gonadotrophin producing cells Exogenously LH synthesis administered androgens and release or anabolic steroids are decreased Prostate Testes Normal function. Testosterone synthesis in The deficit of endogenously Leydig cells is decreased. The synthesized testosterone is exogenously administered compensated for by the steroid is not able to exogenously administered compensate for the deficit of steroid endogenously synthesized testosterone Figure 2 Intratesticular and serum testosterone concentrations after treatment with andro gens or anabolic steroids in order to substitute for the peripheral androgen deficiency and to achieve azoospermia. Because this steroid is alkylated in position 17, toxic effects on liver function can not be excluded. Danazol offers no advantages as compared with other anabolic steroids; rather, disadvantages. Numerous experiments of this type have been performed during the last 40 or 50 years. The outcome in each case was more or less identical: with a certain dose of an androgen or anabolic steroid it is possible to inhibit spermatogenesis without interfering with other androgen-dependent func tions, including libido (potentia coeundi) and accessory sexual glands. On the basis of this pharmacological-endocrinological background, androgens and anabolic steroids can be used for male fertility control, and several clinical trials have been performed during the last 10-15 years. Some of 1 these studies 2-23 are mentioned in Table 2.
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Taschenbuch. Condition: Neu. Neuware - of Part 2.- 1 Natural family planning.- 2 Barrier methods of contraception.- 3 Chemistry, contraceptive activity and toxicology of aryl guanidinobenzoates: inhibitors of sperm acrosin.- 4 Measurement of LH in saliva: a new approach to ovulation detection.- 5 Steroid-induced side-effects of oral contraceptives.- 6 Efficacy and physiology of a triphasic oral contraceptive.- 7 Advantages and disadvantages of low-dose hormonal contraceptive agents.- 8 Emerging routes of delivery for fertility-control agents.- 9 Current status of NORPLANT subdermal implants for contraception.- 10 New aspects in post-coital contraception.- 11 Biological evaluation of some medicinal plant extracts for contraceptive efficacy in females.- 12 Pharmacokinetic and antigenicity studies with LHRH analogues.- 13 LHRH nasal spray in contraception.- 14 Acute and intermittent LHRH agonist dosing as post-coital and anti-ovulatory contraceptive approaches.- 15 LHRH antagonists and contraception.- 16 Mechanism of action of gonadotrophin releasing hormone in the pituitary and gonads.- 17 Morphological changes on the surface of IUDs: are they of clinical significance .- 18 The use of non-culture tests for the detection of VD prior to IUD insertion: a view towards the future.- 19 Experience with GYNE-T Cu-380-A intrauterine contraceptive device (1981-1984).- 20 Ten years' experience with continuous use of the butterfly IUD.- 21 The antiprogesterone activity of RU 486, a contragestive agent in the human.- 22 Effects of the anti progesterone RU 486 in early pregnancy and during the menstrual cycle.- 23 Prostaglandins in contraception.- 24 Ovarian hormones and cybernins.- 25 Biochemical aspects of a contraception model based on immunological properties of proteohormones.- 26 Variability in antisperm andantiembryonic humoral immune responses.- 27 Research for the development of an hCG antifertility vaccine.- 28 Present and future aspects of immunological methods in contraception.- 29 Preclinical and clinical aspects of safety in contraception.- 30 The politics of contraception.- 31 Contraceptive futurology: or 1984 in 1984. Seller Inventory # 9789401086783