Fertility Restoration after Cancer: Current and Future Therapies By Paul J. Turek MD, FACS, FRSM Director, The Turek Clinic, San Francisco (WARNING: Images in slides not appropriate for all audiences due to subject matter)
Urologist and male fertility doctor for vasectomy and vasectomy reversal, sperm retrieval, testicular mapping, varicocele repair and ejaculatory duct repair, Dr. Paul Turek, speaks about Fertility Restoration after Cancer: Current and Future Therapies. Dr. Turek is director of The Turek Clinic. Located in San Francisco, California, The Turek Clinic provides world-class patient care with an essential holistic approach. (WARNING: Images in slides not appropriate for all audiences due to subject matter.)
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Similar a Fertility Restoration after Cancer: Current and Future Therapies By Paul J. Turek MD, FACS, FRSM Director, The Turek Clinic, San Francisco (WARNING: Images in slides not appropriate for all audiences due to subject matter)
Similar a Fertility Restoration after Cancer: Current and Future Therapies By Paul J. Turek MD, FACS, FRSM Director, The Turek Clinic, San Francisco (WARNING: Images in slides not appropriate for all audiences due to subject matter) (20)
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Fertility Restoration after Cancer: Current and Future Therapies By Paul J. Turek MD, FACS, FRSM Director, The Turek Clinic, San Francisco (WARNING: Images in slides not appropriate for all audiences due to subject matter)
1. Fertility Restoration after Cancer: Current and Future Therapies Paul J. Turek MD, FACS, FRSM Director, The Turek Clinic San Francisco
2. Preservation Sperm banking Sperm harvest; electroejaculation Finding sperm during treatment Finding sperm after treatment Hormonal suppression Restoration Germ cell transplants Germ cell maturation in vitro Stem cell to germ cell maturation Techniques to Preserve or Restore Fertility
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5. Sperm Banking with Cancer: Patient and Provider Attitudes PROVIDERS Survey of 718 oncology staff Two tertiary cancer centers 91% believed banking should be offered 52% actually offered it to patients Reasons: high cost, convenience PATIENTS 904 men with cancer Two tertiary cancer centers 51% wanted future fertility 60% recall being informed 24% banked sperm Reasons: Lack of information Serious room for improvement: Practice standards? Team medicine? Schover et al. J Clin Oncol. 20:1880, 2002 Schover et al. J Clin Oncol. 20:1890, 2002
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7. Preservation Sperm banking Sperm harvest; electroejaculation Finding sperm during treatment Finding sperm after treatment Hormonal suppression Restoration Germ cell transplants Germ cell maturation in vitro Stem cell to germ cell maturation Techniques to Preserve or Restore Fertility
9. (n=44 couples @UCSF) Issues: Currently a limited/limiting resource Couples pregnant 64% Vib Stim only 14% Couples with ICSI 59% Preg. without tech. 10%
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11. Preservation Sperm banking Sperm harvest; electroejaculation Finding sperm during treatment Finding sperm after treatment Hormonal suppression Restoration Germ cell transplants Germ cell maturation in vitro Stem cell to germ cell maturation Techniques to Preserve or Restore Fertility
12. Banking Sperm Before Radical Orchiectomy Banking Sperm During Radical Orchiectomy Not Doing Radical Orchiectomy…. Other Ways to “Bank….”
21. Chemotherapy and Fertility: Finding Sperm after Treatment Special cases: Bone Marrow Transplant Paternity after hematologic malignancies that involve high dose chemotherapy , total body irradiation and bone marrow transplantation Ignatov et al. BMT 45; 1474, 2010
22. Special cases: Pubertal patients 13 y.o. Tanner III-IV male with L knee synovial sarcoma. Chemotherapy planned. During Broviac line placement, testis tissue extraction performed for cryopreservation. Mature sperm found.
23. Preservation Sperm banking Finding sperm during treatment Finding sperm after treatment Hormonal suppression Restoration Germ cell transplants Germ cell maturation in vitro Stem cell to germ cell maturation Techniques to Preserve or Restore Fertility
24. GnRH Flut Cytoxan Both 0 20 40 60 80 100 Percent Repopulation of Rat Testis Meistrich et al. J Androl. 16: 334, 1995 Chemotherapy and Fertility: Spermatogenic Shutdown Pre-chemotherapy treatment with total androgen blockade
25. Chemotherapy and Fertility: Spermatogenic Shutdown Issues: Promising research but feasibility unclear (lead time needed). Giving androgen blockade to rats AFTER chemotherapy improved spermatogenesis. Meistrich ML et al. Cancer Res. 59: 3557, 1999 Udagawa et al. Int J Urol. 8: 615-622, 2001 Androgen blockade in humans AFTER chemotherapy has not improved spermatogenesis (i.e. testis biopsy and semen quality). Thomson AB et al. Hum Reprod. 17: 1715, 2002
26. Preservation Sperm banking Finding sperm during treatment Finding sperm after treatment Hormonal suppression Restoration Germ cell transplants Germ cell maturation in vitro Stem cell to germ cell maturation Techniques to Preserve or Restore Fertility
38. What Does an Artificial Human Testicle Look Like? Sertoli cells Fibronectin Stromal cells Leydig cells “ Germ cells” (hESCs, iPSCs)
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40. Thanks to : Uche Ezeh M.D. Mark Fox Ph.D Shai Shefi M.D. Amander Clark Ph.D Connie John Ph.D Renee Reijo Pera Ph.D Lance Armstrong Foundation California Urology Foundation National Institutes of Health California Institute of Regenerative Medicine