Introduction
Congenital adrenal hyperplasias are a family of autosomal recessive diseases resulting from defects in steps of the synthesis of cortisol from cholesterol by the adrenal gland. All forms of CAH involve excessive or defective production of sex steroids and can prevent or impair development of primary or secondary sex characteristics in affected infants, children, and adults. Many also involve excessive or defective production of mineralocorticoids, which can cause hypertension or salt-wasting.
Lipoid CAH is one of the rarer forms of CAH and results from defects in the steps from cholesterol to pregnenolone. This results in the catastrophic loss of most or all steroid hormones in the body. It is caused by mutations in either of two proteins: cytochrome P450scc and steroidogenic acute regulatory protein (StAR).
Read more about this topic: Lipoid Congenital Adrenal Hyperplasia
Famous quotes containing the word introduction:
“For better or worse, stepparenting is self-conscious parenting. Youre damned if you do, and damned if you dont.”
—Anonymous Parent. Making It as a Stepparent, by Claire Berman, introduction (1980, repr. 1986)
“Such is oftenest the young mans introduction to the forest, and the most original part of himself. He goes thither at first as a hunter and fisher, until at last, if he has the seeds of a better life in him, he distinguishes his proper objects, as a poet or naturalist it may be, and leaves the gun and fish-pole behind. The mass of men are still and always young in this respect.”
—Henry David Thoreau (18171862)
“We used chamber-pots a good deal.... My mother ... loved to repeat: When did the queen reign over China? This whimsical and harmless scatological pun was my first introduction to the wonderful world of verbal transformations, and also a first perception that a joke need not be funny to give pleasure.”
—Angela Carter (19401992)