Yen & Jaffe's Reproductive Endocrinology

The Ovarian Life Cycle

Introduction The ovary is a dynamic organ that undergoes some of the most dramatic changes in structure and function of any adult human tissue ( Fig. 8.1 ). Follicles at all stages of development, from tiny primordial follicles to large…

Neuroendocrine Control of the Menstrual Cycle

The Reproductive Axis Normal reproductive function in women involves repetitive cycles of follicle development, ovulation, and preparation of the endometrium for implantation should conception occur in that cycle. This pattern of regular ovulatory cycles is achieved through precise functional and…

Growth Factors and Reproduction

Acknowledgments The authors wish to thank Dr. Martin Matzuk, Dr. Amanda Rodriguez, and Dr. Caterina Clementi for their contributions to the previous versions of this chapter. Studies in the Pangas and Monsivais laboratories have been supported by the Eunice Kennedy…

Steroid Hormone Action

Steroid Hormone Receptors Act as Ligand-Dependent Transcription Activators or Repressors Steroid hormones are derived from the metabolic conversion of cholesterol into biologically active steroid products that bind to intracellular receptors with high specificity. The canonical mechanism of action for the…

Prolactin in Human Reproduction

Introduction Prolactin (PRL) is a single chain (23 KDa) polypeptide hormone, which is secreted by anterior pituitary lactotroph cells. Several lines of evidence indicate that PRL has an essential role in reproduction and lactation. In addition, animal data have supported…