Journal
PEPTIDES
Volume 22, Issue 6, Pages 873-878Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/S0196-9781(01)00412-0
Keywords
PACAP; turtle; anoxia-tolerance; neuroprotection
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The levels of the pituitary adenylate cyclase activating polypeptide (PACAP) were measured in the central nervous system and in peripheral organs of the anoxia-tolerant freshwater turtle, Pseudemys scripta elegans by radioimmunoassay. The concentration of PACAP38 was strikingly high in the central nervous system and lower but considerable immunoreactivity was detected in the peripheral organs. Levels of PACAP38 in the turtle brain exceed those measured in rat and human brain areas by 10-100-fold. Based on these exceptionally high levels of PACAP and the known neuroprotective role of the peptide, it can be suggested that PACAP38 plays a role in the extraordinary resistance of the turtle brain from anoxia-induced neuronal damage. (C) 2001 Elsevier Science Inc. All rights reserved.
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