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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Sciatic nerve lipoprotein lipase is reduced in streptozotocin-induced diabetes and corrected by insulin.

The metabolic abnormalities underlying the cause of diabetic neuropathy have been the subject of much debate. Lipoprotein lipase (LPL) is a 56-kDa enzyme produced by several tissues in the body and has recently been shown in vitro to be expressed in cultured Schwann cells, where it is important in phospholipid synthesis. This suggests a role for LPL in myelin biosynthesis in the peripheral nervous system. The aim of this study was to determine if acute streptozotocin (STZ)-induced diabetes reduces the expression and regulation of sciatic nerve LPL in vivo. Adult Sprague Dawley rats were rendered diabetic via an sc injection of STZ. A decrease in sciatic nerve LPL activity was observed in the STZ-treated rats after just 2 d of diabetes and remained significantly reduced for at least 35 d. The decrease in LPL activity coincided temporally with a drop in motor nerve conduction velocity. Treatment with insulin for 4 d showed a normalization of sciatic nerve LPL activity. These results show that STZ-induced diabetes causes a decrease in LPL activity in the sciatic nerve that, as in other tissues, is reversible with insulin treatment. These data may suggest a role for LPL in the pathophysiology of diabetic neuropathy.[1]


  1. Sciatic nerve lipoprotein lipase is reduced in streptozotocin-induced diabetes and corrected by insulin. Ferreira, L.D., Huey, P.U., Pulford, B.E., Ishii, D.N., Eckel, R.H. Endocrinology (2002) [Pubmed]
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