Abstract:
BACKGROUND:Most proteoglycans are heterogeneous molecules composed of a protein core with glycosaminoglycans (GAGs) attached. GAGs are highly negatively charged molecules that readily bind to enzymes, growth factors, cytokines etc. and as such have many functions. The role played by proteoglycans in diabetes has only recently been investigated. METHODS:The importance of proteoglycans and the effects of diabetes on proteoglycans are discussed. Possible strategies for reducing diabetic complications associated with preventing proteoglycan destruction are examined. RESULTS:Proteoglycans are altered in the endothelium, vascular wall, kidney, retina, heart, gut epithelial cells, bone and cartilage with diabetes. A decrease in proteoglycans, associated with hyperglycemic conditions, is reported to be due to a decrease in proteoglycan synthesis or an increase in destruction. Destruction may be a result of an upregulation of enzymes that degrade GAGs or destruction by reactive oxygen species. Several studies suggest that upregulation of heparanase and its destruction of heparan sulfate proteoglycans may be responsible for many of the complications associated with diabetes particularly in the kidney and blood vessels leading to chronic kidney disease, atherosclerosis and acute coronary syndrome. Preliminary studies suggest that administration of GAGs may be beneficial in reducing or delaying the harmful consequences of diabetes in the kidney and retina. CONCLUSIONS:Changes in proteoglycans are partially responsible for diabetic complications. Recent studies demonstrate that administration of GAGs may reduce or delay diabetic complications. Further studies are required to understand the alterations in proteoglycans associated with diabetes, and the protective potential of administered GAGs.
journal_name
Curr Pharm Desjournal_title
Current pharmaceutical designauthors
Hiebert LMdoi
10.2174/1381612823666170125154915subject
Has Abstractpub_date
2017-01-01 00:00:00pages
1500-1509issue
10eissn
1381-6128issn
1873-4286pii
CPD-EPUB-81270journal_volume
23pub_type
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journal_title:Current pharmaceutical design
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