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Alterations in myo-inositol and phosphoinositide metabolism, induced by hyperglycemia and prevented by aldose reductase inhibitors, are implicated in impaired Na+-K+-ATPase regulation in peripheral nerve and other tissues prone to diabetic complications by an increasing range of scientific observations. However, the precise role of these related metabolic derangements in various stages of clinical complications is complex. For instance, it appears that these biochemical defects may play a role not only in the initiation of diabetic neuropathy but also in its later progression. Therefore, full appreciation of the potential pathogenetic role of altered phosphoinositide metabolism in diabetic complications requires detailed studies of both the earliest and the more mature stages of these disease processes.
Greene et al. (Wed,) studied this question.