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Quantitative analysis of nociceptin in blood of patients with acute and chronic pain.

Abstract
This study aimed to define the change of serum level of nociceptin in pain patients. Seventy pain patients and 20 normal healthy subjects were enrolled. Patients were divided into three groups according to the duration of pain; (1) acute (within 4 weeks), (2) subacute (4 weeks to 6 months), and (3) chronic (> 6 months) state. Serum concentration of nociceptin was measured by radioimmunoassay. Serum nociceptin level was significantly higher in the patients with pain than in normal healthy subjects ( rho < 0.01). Furthermore, nociceptin level was significantly higher in the chronic pain group than acute group ( rho < 0.05). Serum nociceptin level has a relationship with the existence of pain and its duration.
AuthorsMyoung-Hwan Ko, Yun-Hee Kim, Ran-Sook Woo, Kee-Won Kim
JournalNeuroreport (Neuroreport) Vol. 13 Issue 13 Pg. 1631-3 (Sep 16 2002) ISSN: 0959-4965 [Print] England
PMID12352616 (Publication Type: Journal Article)
Chemical References
  • Opioid Peptides
  • Receptors, Opioid
  • nociceptin
  • nociceptin receptor
Topics
  • Acute Disease
  • Adult
  • Aged
  • Central Nervous System (metabolism)
  • Chronic Disease
  • Female
  • Humans
  • Male
  • Middle Aged
  • Opioid Peptides (blood)
  • Pain (blood, physiopathology, psychology)
  • Pain Measurement
  • Radioimmunoassay
  • Receptors, Opioid (metabolism)
  • Sex Characteristics
  • Up-Regulation (physiology)

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