Abstract:
:The dorsal root ganglia (DRG) have been identified as the target tissue in diabetic somatosensory neuropathy. It has been reported that, in the chronically diabetic state, DRG sensory neurons may undergo morphological changes. In this study, we examined the effect of zenarestat, an aldose reductase inhibitor, on the morphological derangement of the DRG and the sural nerve of streptozotocin-induced diabetic rats (STZ rats) over a 13-month period. The cell area of the DRG in STZ rats was smaller than that in normal rats. A decrease in fiber size was apparent in the sural nerve of the STZ rats, and the fiber density was greater. These morphological changes were reversed in zenarestat-treated STZ rats. The data suggest that, in peripheral sensory diabetic neuropathy, hyperactivation of the polyol pathway induces abnormalities not only in peripheral nerve fiber, but also in the DRG, which is an aggregate of primary sensory afferent cell bodies.
journal_name
Brain Resjournal_title
Brain researchauthors
Shimoshige Y,Minoura K,Matsuoka N,Takakura S,Mutoh S,Kamijo Mdoi
10.1016/j.brainres.2008.10.018subject
Has Abstractpub_date
2009-01-09 00:00:00pages
182-7eissn
0006-8993issn
1872-6240pii
S0006-8993(08)02508-0journal_volume
1247pub_type
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