Our study is devoted to investigation of expression of extracellular adhesion molecules ICAM-1 (CD54) and ICAM3 (CD50) in patients with proliferative diabetic retinopathia. It was shown that patients with proliferative stage of retinopathia and essentic neovascularisation have the statistically convincing increase of percent of CD54-positive lymphocytes and granulocytes of peripheral blood in comparison with healthy donors. This percent was 25,1 ±4,8% and 52,5±1,6% vs 12,4±3,0 and 8,3±3,0, respectively. At the same time in the stage of stabilization of the process in the eyeground the percent of CD54-positive lymphocytes and granulocytes in patients does not differ from the latter in healthy donors. So the expression of ICAM-1 (CD54) could be represent like implicit index of activity of the process, inter alia in the eye-ground. The study of expression of ICAM-3 (CD50) did not give statistically convincing difference between patients and the control group.
AIMTo study allele polymorphism of two variable regions [C1167T substitution in the catalase (CAT) gene D6S392 microsatellite near the Mn-dependent superoxide dismutase (SOD2) gene] was studied in insulin-dependent diabetic (IDDM) patients with (n = 36) or without (n = 56) diabetic nephropathy, and with (n = 30) or without (n = 44) diabetic retinopathy.MATERIAL AND METHODSBoth polymorphic regions were amplified using polymerase chain reaction (PCR). PCR products were separated using polyacrylamide (D6S366) or agarose (C1167T) gel electrophoresis. In a case of C1167, PCR-amplified products were digested with BstXI restriction endonuclease before electrophoresis. A significance of the difference between allele distributions in complicated and uncomplicated IDDM patients was estimated using the exact Fisher's test.RESULTSNo significant difference was observed in allele and genotype frequencies in complicated and uncomplicated IDDM subjects.CONCLUSIONC1167 polymorphism in the CAT gene and D6S366 near the SOD2 gene are not associated with the development of diabetic nephropathy and diabetic retinopathy in IDDM.