Diabetes, Vol 29, Issue 3 182-186, Copyright © 1980 by American Diabetes Association
Reduced perikaryal volume of lower motor and primary sensory neurons in early experimental diabetes
P Sidenius and J Jakobsen
The volume of nerve cell bodies of the anterior horn of the fifth lumbar
segment and of the fifth lumbar dorsal root ganglion were measured by
stereological methods in rats with 4-wk duration of streptozotocin diabetes
and in age-matched controls. The perikaryal volume of motor and sensory
neurons was reduced by 18% in diabetic rats and a shift between the number
of A- and B-cells was observed in the dorsal root ganglion. The findings
are in accordance with our earlier observation of reduced axonal size of
myelinated fibers in the common peroneal nerve. Furthermore, the data lead
us to suppose that the nervous system abnormalities in early diabetes are
not exclusively restricted to the peripheral nerves.