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.1990 May;15(5):383-6.
doi: 10.1097/00007632-199005000-00008.

Neuroimmunohistochemical analysis of peridiscal nociceptive neural elements

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Neuroimmunohistochemical analysis of peridiscal nociceptive neural elements

Y T Konttinen et al. Spine (Phila Pa 1976).1990 May.

Abstract

Twenty-three perioperative tissue samples from lumbar disc operations on 11 patients were studied immunohistochemically using the sensitive avidin-biotin-peroxidase complex (ABC) method and specific heterologous antisera for the presence of neurofilament-positive neural elements containing nociceptive neuropeptides substance P (SP) and/or calcitonin gene-related peptide (CGRP). Histologically, neural elements were especially abundant in the posterior longitudinal ligament, there being also a few demonstrable nerves in the peripheral anulus fibrosus. These nerves often showed a co-localization of cytoskeletal neurofilaments together with SP and/or CGRP immunoreactivity. It is suggested that pressure and chemical irritation of nociceptive nerves dependent on degenerated discs excite sensory neural elements, especially in the posterior longitudinal ligament and possibly also in the peripheral parts of the anulus fibrosus, while the disc itself, at least if not penetrated by vascular granular tissue, is painless and neuroanatomically lacks a structural basis for pain perception.

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