In Vitro Conversion of ³H-Pregnenolone by Human Testicular Tissue from Fetal Age to Senescence

References

• Allenmark S, Berg AÅ Son, Hammar M, Lind-ström E. Combined paper and reversed phase high performance liquid chromatography method for the study of pregnenolone and progesterone metabolites. J Chromatogr Biomed Appl 1981; 224: 399–405
   Google Scholar
• Berg AÅ Son, Kjessler B, Lundkvist K. In vitro metabolism of 3H-progesterone in human testicular tissue. II.Prepubertal and adolescent boys. Acta Endocrinol 1976; 207(Suppl)23–35
   Google Scholar
• Berg AÅ Son, Hammar M, Kjessler B. Analyses of steroid conversion in vitro by testicular tissue as a means of selection of infertile males for gonadotrophic substitution therapy. Int J Androl 1983; 6: 12–24
   PubMedGoogle Scholar
• Carlström K, Fredricsson B. Effect of clomiphene citrate on testicular metabolism in man. Int J Androl 1980; 3: 417–428
   PubMedGoogle Scholar
• Faiman C, Winter J SD, Reyes F I. Endocrinology of the fetal testis. The Testis, H Burger, Kretser D de. Raven Press, New York 1981; 81–105
   Google Scholar
• Forest M G, Cathiard A M, Bertrand J A. Evidence of testicular activity in early infancy. J Clin Endocrinol Metab 1973; 37: 148–151
   PubMed Web of Science ®Google Scholar
• Greulich W W, Pyle S J. Radiographic atlas of skeletal deverlopment2d ed. Stanford University Press, Stanford, Calif 1959; 256
   Google Scholar
• Hammond G L, Kontturi M, Vihko P, Vihko R. Serum steroids in normal males and patients with prostatic diseases. Clin Endocrinol 1978; 9: 113–121
   PubMed Web of Science ®Google Scholar
• Harman S M, Tsitouras P D. Reproductive hormones in aging men. I. Measurement of sex steroids, basal Luteinizing hormone, and Leydig cell response to human chorionic gonadotropin. J Clin Endocrinol Metab 1980; 51: 35–40
   PubMed Web of Science ®Google Scholar
• Hedinger C. Histological data in cryptorchidism. In: Cryptorchidism Diagnosis and Treatment. Pediatr Adolesc Endocrinol 1979; 6: 3–13
   Google Scholar
• Kjessler B, Berg AÅ Son. In vitro metabolism of 3H-progesterone in human testicular tissue. I. Adult males. Acta Endocrinol 1976; 207(Suppl)3–22
   Google Scholar
• Kremers P. Progesterone and pregnenolone 17α-hydroxylase substrate specificity and selective inhibition by 17α-hydroxylated products. J Steroid Biochem 1976; 7: 571–575
   PubMedGoogle Scholar
• Läckgren G, Berg AÅ Son. In vitro metabolism of progesterone in the human undescended testis. Int J Androl 1983; 6: 423–432
   PubMedGoogle Scholar
• Lewis J G, Ghanadian R, Chrisholm G D. Serum 5α-dihydrotesterone and testosterone changes with age in man. Acta Endocrinol 1976; 82: 444–448
   PubMedGoogle Scholar
• Mancini R E, Rosemberg E, Cullen M, Lavieri J C, Vilar O, Bergada C, Andrada J A. Cryptorchid and scrotal human testes. I. Cytological, cytochemical and quantitative studies. J Clin Endocrinol Metab 1965; 25: 927–942
   PubMed Web of Science ®Google Scholar
• Mastragiacomi I, Feghali G, Foresta C, Ruzza G. Andropause: Incidence and pathogenesis. Arch Androl 1982; 9: 293–296
   PubMedGoogle Scholar
• Nieschlag E. The male climacteric. Female and male climacteric, Keep PA van, D M Serr, R B Greenblatt. MTP Press, LancasterGreat Britain 1979; 133–139
   Google Scholar
• Payne A H, Jaffe R B. Androgen formation from pregnenolone sulfate by fetal neonatal, prepubertal and adult human testes. J Clin Endocrinol Metab 1975; 40: 102–107
   PubMedGoogle Scholar
• Robinson H P, Fleming J EE. A critical evaluation of sonar “crown-rump” length measurements. Br J Obstet Gynaecol 1975; 82: 702–710
   PubMedGoogle Scholar
• Serio M, Gonelli P, Borelli D, Pampaloni A, Fiorelli G, Calabresi E, Forti G, Pazzagli M, Manelli M, Baroni A, Gianotti P, Giusti G. Human testicular secretion with increasing age. J Steroid Biochem 1979; 11: 893–897
   PubMedGoogle Scholar
• Siiteri P K, Wilson J D. Testosterone formation and metabolism during male sexual differentiation in the human embryo. J Clin Endocrinol Metab 1974; 38: 113–125
   PubMed Web of Science ®Google Scholar
• Steinberger E, Ficher M. Conversion of progesterone to testosterone by testicular tissue at different stages of maturation. Steroids 1968; 11: 351
   PubMedGoogle Scholar
• Steinberger E. Clinical picture and in vitro biosynthetic activity in testicular tissue of patients with disturbances in spermatogenesis. Proceedings of the Foundation Puigvert Symposia, Barcelona, 1972
   Google Scholar
• Steinberger E, Root A, Ficher M, Smith K D. The role of androgens in the initiation of spermatogenesis in man. J Clin Endocrinol Metab 1973; 37: 746–751
   PubMed Web of Science ®Google Scholar
• Swerdloff R S, Heber D. Endocrine control of testicular function from birth to puberty. The Testis, H Burger, Kretser D de. Raven Press, New York 1981; 107–126
   Google Scholar
• Tanner J M. The development of the reproductive system. Growth and Adolescence2d ed. Blackwell, Oxford 1962; 32
   Google Scholar
• Tapanainen J, Kellokumpu-Lehtinen P, Pelliniemi L, Huhtaniemi I. Age related changes in endogenous steroids of human fetal testis during early and mid pregnancy. J Clin Endocrinol Metab 1981; 52: 98–102
   PubMed Web of Science ®Google Scholar
• Tcholakian R K, Eik-Nes K B. Steroidogenesis in the Blue Crab Callinectes sapidus Rathbun. Gen Comp Endocrinol 1971; 17: 115–124
   PubMedGoogle Scholar
• van der Molen H J, Rommerts F FG. Testicular steroidogenesis. The Testis, H Burger, Kretser D de. Raven Press, New York 1981; 213–238
   Google Scholar
• Vermeulen A, Verdonck L. Radioimmunoassay of 17α-hydroxy-5-androstan-3-one, 4-androstene-3, 17-dione, dehydroepiandroster-one, 17α-hydroxyprogesterone and progesterone and its application to human male plasma. J Steroid Biochem 1976; 7: 1–10
   PubMedGoogle Scholar
• Winters S J, Troen P. Episodic luteinizing hormone (LH) secretion and the response of LH and follicle-stimulating hormone to LH-releasing hormone in aged men: Evidence for coexistent primary testicular insufficiency and an impairment in gonadotropin secretion. J Clin Endocrinol Metab 1982; 55: 560–565
   PubMed Web of Science ®Google Scholar