Erytrocyte membrane anionic charge in type 2 diabetic patients with retinopathy
<p>Abstract</p> <p>Background</p> <p>The Steno hypothesis states that changes in basement membrane anionic charge leads to diabetic microvascular complications. In diabetic nephropathy, loss of basement membrane glycosaminoglycans and the association between glomerular...
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| Format: | Article |
| Language: | English |
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BMC
2004-10-01
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| Series: | BMC Ophthalmology |
| Online Access: | http://www.biomedcentral.com/1471-2415/4/14 |
| _version_ | 1811315929283297280 |
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| author | Akdogan Muberra Demirci Hakan Budak Yasemin Yavuz Dilek |
| author_facet | Akdogan Muberra Demirci Hakan Budak Yasemin Yavuz Dilek |
| author_sort | Akdogan Muberra |
| collection | DOAJ |
| description | <p>Abstract</p> <p>Background</p> <p>The Steno hypothesis states that changes in basement membrane anionic charge leads to diabetic microvascular complications. In diabetic nephropathy, loss of basement membrane glycosaminoglycans and the association between glomerular basement membrane heparan sulphate and proteinuria has been documented. A correlation between erythrocyte surface and the glomerular capillary wall charges has also been observed.</p> <p>The aim of this study is to evaluate the relationship between retinopathy and erythrocyte anionic charge and urinary glycosaminoglycan excretion in type 2 diabetic patients.</p> <p>Methods</p> <p>49 subjects (58 ± 7 yrs, M/F 27/22) with type 2 diabetes with proliferative retinopathy (n = 13), nonproliferative retinopathy (n = 13) and without retinopathy (n = 23) were included in the study. 38 healthy subjects were selected as control group (57 ± 5 yrs, M/F 19/19). Erythrocyte anionic charge (EAC) was determined by the binding of the cationic dye, alcian blue. Urinary glycosaminoglycan and microalbumin excretion were measured.</p> <p>Results</p> <p>EAC was significantly decreased in diabetic patients with retinopathy (255 ± 30 ng alcian blue/10<sup>6 </sup>RBC, 312 ± 30 ng alcian blue/10<sup>6 </sup>RBC for diabetic and control groups respectively, p < 0.001). We did not observe an association between urinary GAG and microalbumin excretion and diabetic retinopathy. EAC is found to be negatively corralated with microalbuminuria in all groups.</p> <p>Conclusions</p> <p>We conclude that type 2 diabetic patients with low erythrocyte anionic charge are associated with diabetic retinopathy. Reduction of negative charge of basement membranes may indicate general changes in microvasculature rather than retinopathy. More prospective and large studies needs to clarify the role of glycosaminoglycans on progression of retinopathy in type 2 diabetic patients.</p> |
| first_indexed | 2024-04-13T11:40:09Z |
| format | Article |
| id | doaj.art-e260bd993a0d42559d17e076f76773b6 |
| institution | Directory Open Access Journal |
| issn | 1471-2415 |
| language | English |
| last_indexed | 2024-04-13T11:40:09Z |
| publishDate | 2004-10-01 |
| publisher | BMC |
| record_format | Article |
| series | BMC Ophthalmology |
| spelling | doaj.art-e260bd993a0d42559d17e076f76773b62022-12-22T02:48:20ZengBMCBMC Ophthalmology1471-24152004-10-01411410.1186/1471-2415-4-14Erytrocyte membrane anionic charge in type 2 diabetic patients with retinopathyAkdogan MuberraDemirci HakanBudak YaseminYavuz Dilek<p>Abstract</p> <p>Background</p> <p>The Steno hypothesis states that changes in basement membrane anionic charge leads to diabetic microvascular complications. In diabetic nephropathy, loss of basement membrane glycosaminoglycans and the association between glomerular basement membrane heparan sulphate and proteinuria has been documented. A correlation between erythrocyte surface and the glomerular capillary wall charges has also been observed.</p> <p>The aim of this study is to evaluate the relationship between retinopathy and erythrocyte anionic charge and urinary glycosaminoglycan excretion in type 2 diabetic patients.</p> <p>Methods</p> <p>49 subjects (58 ± 7 yrs, M/F 27/22) with type 2 diabetes with proliferative retinopathy (n = 13), nonproliferative retinopathy (n = 13) and without retinopathy (n = 23) were included in the study. 38 healthy subjects were selected as control group (57 ± 5 yrs, M/F 19/19). Erythrocyte anionic charge (EAC) was determined by the binding of the cationic dye, alcian blue. Urinary glycosaminoglycan and microalbumin excretion were measured.</p> <p>Results</p> <p>EAC was significantly decreased in diabetic patients with retinopathy (255 ± 30 ng alcian blue/10<sup>6 </sup>RBC, 312 ± 30 ng alcian blue/10<sup>6 </sup>RBC for diabetic and control groups respectively, p < 0.001). We did not observe an association between urinary GAG and microalbumin excretion and diabetic retinopathy. EAC is found to be negatively corralated with microalbuminuria in all groups.</p> <p>Conclusions</p> <p>We conclude that type 2 diabetic patients with low erythrocyte anionic charge are associated with diabetic retinopathy. Reduction of negative charge of basement membranes may indicate general changes in microvasculature rather than retinopathy. More prospective and large studies needs to clarify the role of glycosaminoglycans on progression of retinopathy in type 2 diabetic patients.</p>http://www.biomedcentral.com/1471-2415/4/14 |
| spellingShingle | Akdogan Muberra Demirci Hakan Budak Yasemin Yavuz Dilek Erytrocyte membrane anionic charge in type 2 diabetic patients with retinopathy BMC Ophthalmology |
| title | Erytrocyte membrane anionic charge in type 2 diabetic patients with retinopathy |
| title_full | Erytrocyte membrane anionic charge in type 2 diabetic patients with retinopathy |
| title_fullStr | Erytrocyte membrane anionic charge in type 2 diabetic patients with retinopathy |
| title_full_unstemmed | Erytrocyte membrane anionic charge in type 2 diabetic patients with retinopathy |
| title_short | Erytrocyte membrane anionic charge in type 2 diabetic patients with retinopathy |
| title_sort | erytrocyte membrane anionic charge in type 2 diabetic patients with retinopathy |
| url | http://www.biomedcentral.com/1471-2415/4/14 |
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