Proteoglycans and Diabetes.

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 Des

authors

Hiebert LM

doi

10.2174/1381612823666170125154915

subject

Has Abstract

pub_date

2017-01-01 00:00:00

pages

1500-1509

issue

10

eissn

1381-6128

issn

1873-4286

pii

CPD-EPUB-81270

journal_volume

23

pub_type

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