Abstract

The visualization of Ca binding in the myelinated axons of lumbosacral segments of rabbit was done at the electron microscopic level using the spinal cord ischemia model. To assess the calcium accumulation, the binding agent pyroantimonate was used. Nonsignificant Ca2+ binding was found in the myelinated axons after 40 min of ischemia followed immediately by perfusion fixation. A high concentration of calcium pyroantimonate deposits, seen as electron dense particles, was detected in the myelin interlamellar clefts and axoplasm. The paranodal region was the most affected site.

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