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Immunoreactive evidence of beta-endorphin and methionine-enkephalin-Arg-Gly-Leu in human tooth pulp.

Authors
  • Robinson, Q C
  • Killmar, J T
  • Desiderio, D M
  • Harris, E F
  • Fridland, G
Type
Published Article
Journal
Life Sciences
Publisher
Elsevier
Publication Date
Jan 01, 1989
Volume
45
Issue
11
Pages
987–992
Identifiers
PMID: 2529409
Source
Medline
License
Unknown

Abstract

For the first time, beta-endorphin-like immunoreactivity (BE-LI) has been measured in human tooth pulp. Separation of peptides from pulp tissue was achieved by acid extraction followed by chromatographic separation through a Sep-Pak disposable cartridge. Reversed phase high performance liquid chromatographic (RP-HPLC) was performed on the peptide-rich fractions for further peptide separation. Radioreceptor assay (RRA) data of the HPLC fractions was used to construct a profile of opioid-receptor active peptides. Radioimmunoassay (RIA) data provided further information. Following acute mechanical stress, a monotonic decrease in BE-LI concentrations was evident according to a four bicuspid extraction order.

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