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Neurochemical Systems (Paperback, Softcover reprint of the original 1st ed. 1985)
Loot Price: R1,740
Discovery Miles 17 400
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Neurochemical Systems (Paperback, Softcover reprint of the original 1st ed. 1985)
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The content of Volume 8 of the Handbook of Neurochemistry is a
perfect example and sample of what occupies neurochemists in the
late 1980s. What occupies them are questions, concepts, and
technology that either did not start with the nervous system, or
rapidly moved out of its exclusivity (see, for in- stance, chapters
on neurotensin, beta-lipotropin, behavioral and neurochemical
effects of ACTH, cholecystokinin, etc.). Thus, the neurochemist is
more and more seen as a biochemist occupied by questions, concepts,
and technology that are not unique to the nervous system, even
though the ultimate substrate of these questions, as well as the
ultimate functions so studied and occasionally explained, are of
the nervous system. Look at the case of the hypothalamic
hypophysiotropic peptides, also called hypothalamic releasing
factors, or hypothalamic releasing hormones. These are all
small-to-medium-size polypeptides originally characterized in ex-
tracts of the hypothalamus on the basis of bioassays directed at
studying their effects on one or another of the secretions of the
adenohypophysis. We know now that TRFs (See Chapter 8), the
thyrotropin and prolactin releasing factor, somatostatin, the
hypothalamic inhibitor of the secretion of growth hormone, as well
as LRF, the hypothalamic decapeptide stimulating the secretion of
pituitary gonadotropins, are to be found in parts of the brain
other than the hypothalamus, where their function is obviously not
hypophysiotropic. Such is also the case for CRF-the corticotropin
and beta-endorphin releasing factor.
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