Principles of hormone action

Mark Gurnell, Jacky Burrin and V. Krishna Chatterjee

in Oxford Textbook of Medicine

Published on behalf of Oxford University Press

Published in print May 2010 | ISBN: 9780199204854
Published online November 2011 | e-ISBN: 9780199570973 | DOI:

Series: Oxford Textbooks

Principles of hormone action

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Hormones, produced by glands or cells, are messengers which act locally or at a distance to coordinate the function of cells and organs. Types of hormone include (1) peptides (e.g hypothalamic releasing factors) and proteins (e.g. insulin, growth hormone)—these generally interact with membrane receptors located on the cell surface, causing activation of downstream signalling pathways leading to alteration in gene transcription or modulation of biochemical pathways to effect a physiological response; (2) steroids (e.g. cortisol, progesterone, testosterone, oestradiol) and other lipophilic substances (e.g. vitamin D, retinoic acid, thyroid hormone)—these act by crossing the plasma membrane to interact with intracellular receptors, with hormone action via nuclear receptors altering cellular gene expression directly....

Chapter.  6552 words.  Illustrated.

Subjects: Clinical Medicine

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