Book contents
- A Textbook of Clinical Embryology
- A Textbook of Clinical Embryology
- Copyright page
- Contents
- Frontispiece
- Chapter Co-authors
- Acknowledgments
- Section 1 Physiology of Reproduction
- Section 2 Assisted Reproductive Procedures
- Chapter 6 Hormonal Ovarian Treatment
- Chapter 7 Luteal Support
- Chapter 8 Ovum Pickup (OPU)
- Chapter 9 In Vitro Fertilization (IVF)
- Chapter 10 Embryo Culture
- Chapter 11 Embryo Transfer
- Chapter 12 Cryopreservation
- Chapter 13 In Vitro Maturation (IVM)
- Chapter 14 Biopsy of Testicles
- Chapter 15 Donation and Surrogacy
- Section 3 Genetics and Preimplantation Genetic Testing
- Section 4 IVF Laboratory
- Index
- References
Chapter 7 - Luteal Support
from Section 2 - Assisted Reproductive Procedures
Published online by Cambridge University Press: 05 March 2021
- A Textbook of Clinical Embryology
- A Textbook of Clinical Embryology
- Copyright page
- Contents
- Frontispiece
- Chapter Co-authors
- Acknowledgments
- Section 1 Physiology of Reproduction
- Section 2 Assisted Reproductive Procedures
- Chapter 6 Hormonal Ovarian Treatment
- Chapter 7 Luteal Support
- Chapter 8 Ovum Pickup (OPU)
- Chapter 9 In Vitro Fertilization (IVF)
- Chapter 10 Embryo Culture
- Chapter 11 Embryo Transfer
- Chapter 12 Cryopreservation
- Chapter 13 In Vitro Maturation (IVM)
- Chapter 14 Biopsy of Testicles
- Chapter 15 Donation and Surrogacy
- Section 3 Genetics and Preimplantation Genetic Testing
- Section 4 IVF Laboratory
- Index
- References
Summary
The corpus luteum (CL) is a transitory endocrine gland that develops from the postovulatory ruptured follicle during the luteal phase. Human chorionic gonadotropin (hCG), produced by the embryo, maintains the secretory activity of the CL due to its structural similarity to luteinizing hormone (LH) and subsequent activation of the same receptor. It maintains and stimulates the CL to produce estradiol (E2) and progesterone (P4). Luteal P4 is involved in the transition of the endometrium from a proliferative to a secretory type, with increasing decidualization – an essential facilitator of implantation [1] – and relaxation of the uterine muscle. Preparation of the endometrium lining the uterus for implantation of the embryo begins toward the end of a proliferative phase and extends throughout the luteal phase. This is important for the implantation process and maintenance of pregnancy until the placenta takes over steroid hormone production at approximately 7 weeks.
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- A Textbook of Clinical Embryology , pp. 85 - 88Publisher: Cambridge University PressPrint publication year: 2021