American journal of nephrology · 2003
Polymorphic genes for kinin receptors, nephropathy and blood pressure in type 2 diabetic patients.
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Zychma Marcin J, Gumprecht Janusz, Trautsolt Wanda, Szydlowska Ilona, Grzeszczak Wladyslaw
Аннотация
BACKGROUND/AIMS: There is evidence that hereditary predisposition contributes to the development of diabetic nephropathy and hypertension. Polymorphisms in the genes for bradykinin receptors (B(1)R and B(2)R) were found to be associated with decreased risk of the development of end-stage renal disease. This study examines whether B(1)R G(-699)C and B(2)R C(181)T polymorphisms are associated with microalbuminuria or overt nephropathy, or blood pressure variation in type 2 diabetic subjects.
METHODS: B(1)R and B(2)R polymorphisms were determined in 153 type 2 diabetic patients with microalbuminuria, 132 with overt nephropathy (macroalbuminuria or chronic renal failure), and 161 patients with normoalbuminuria despite diabetes duration longer than 10 years.
RESULTS: Distributions of the examined polymorphisms did not differ between patients with microalbuminuria or overt nephropathy, compared to normoalbuminuric control subjects. Patients carrying the B(2)R T allele had lower DBP, compared with non-carriers: 83.6 +/- 12.0 vs. 87.4 +/- 12.1 mm Hg, p < 0.05. Among patients not receiving ACEI, both SBP and DBP was significantly lower in B(2)R T allele carriers, compared to non-carriers (137.2 +/- 20.3 vs. 146.5 +/- 21.7 mm Hg, and 80.3 +/- 11.9 vs. 85.8 +/- 11.6 mm Hg, p < 0.05).
CONCLUSIONS: Examined polymorphisms are not associated with the increased risk of incipient or overt nephropathy in type 2 diabetic patients. B(2)R C(181)T polymorphism may contribute to blood pressure variation in these subjects.
METHODS: B(1)R and B(2)R polymorphisms were determined in 153 type 2 diabetic patients with microalbuminuria, 132 with overt nephropathy (macroalbuminuria or chronic renal failure), and 161 patients with normoalbuminuria despite diabetes duration longer than 10 years.
RESULTS: Distributions of the examined polymorphisms did not differ between patients with microalbuminuria or overt nephropathy, compared to normoalbuminuric control subjects. Patients carrying the B(2)R T allele had lower DBP, compared with non-carriers: 83.6 +/- 12.0 vs. 87.4 +/- 12.1 mm Hg, p < 0.05. Among patients not receiving ACEI, both SBP and DBP was significantly lower in B(2)R T allele carriers, compared to non-carriers (137.2 +/- 20.3 vs. 146.5 +/- 21.7 mm Hg, and 80.3 +/- 11.9 vs. 85.8 +/- 11.6 mm Hg, p < 0.05).
CONCLUSIONS: Examined polymorphisms are not associated with the increased risk of incipient or overt nephropathy in type 2 diabetic patients. B(2)R C(181)T polymorphism may contribute to blood pressure variation in these subjects.