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Neuroreport. 1999 Feb 5;10(2):275-9.

Cerebrospinal fluid nitric oxide metabolites in painful diseases.

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1
Department of Orthopedic Surgery, Niigata University School of Medicine, Niigata-shi, Japan.

Abstract

To elucidate the involvement of NO in pain transmission in humans, we measured NO metabolites (nitrite/nitrate) in the CSF of patients with painful diseases using an NO analyzer based on the Griess method. The nitrite/nitrate levels in patients with degenerative lumbar disease (DLD), but not those with fracture or appendicitis, were significantly higher than those in an age-matched control group. The duration of pain in the DLD group was much longer than that in the fracture or appendicitis group. The nitrite/nitrate levels in the middle-aged and elderly DLD patients depended on the duration of pain. These data probably suggest that the duration of pain is critical for the elevation in nitrite/nitrate levels.

[Indexed for MEDLINE]

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