Steroid Hormones Chemistry Biosynthesis and Metabolism

I. INTRODUCTION

A. General Comments

B. Historical Perspective

II. CHEMISTRY OF STEROIDS

A. Basic Ring Structure

B. Classes of Steroids

C. Structural Modification

D. Asymmetric Carbons

E. Conformation of Steroids

F. Other Steroid Structures

III. BIOSYNTHESIS OF CHOLESTEROL

A. General Comments

B. Pathway of Production

C. Role of Sterol Carrier Protein

D. Regulation of Cholesterol Biosynthesis

E. Inhibitors of Cholesterol Biosynthesis

IV. BIOSYNTHESIS OF STEROIDS

A. Introduction

B. Biosynthesis of Pregnenolone and Progestins

C. Biosynthesis by the Adrenal Cortex Glucocorticoids, Mineralocorticoids, and of Some Androgens

D. Biosynthesis of Androgens

E. Biosynthesis of Estrogens

F. Biosynthesis of Vitamin D Metabolites

G. Biosynthesis of Bile Acids

V. PROPERTIES OF ENZYMES INVOLVED IN STEROID METABOLISM

A. Introduction

B. P450 Steroid Hydroxylases

C. Other Enzymes of Steroid Metabolism

VI. PLASMA TRANSPORT, CATABOLISM, AND EXCRETION OF STEROID HORMONES

A. General Comments

B. Plasma Transport of Steroid and Thyroid Hormones

C. Measurements of Rates of Secretion and Metabolic Clearance

D. Inactivation of Steroid Hormones References

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