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  • Title: The relationship of urinary albumin excretion rate to ambulatory blood pressure and erythrocyte sodium-lithium countertransport in NIDDM.
    Author: Pinkney JH, Foyle WJ, Denver AE, Mohamed-Ali V, McKinlay S, Yudkin JS.
    Journal: Diabetologia; 1995 Mar; 38(3):356-62. PubMed ID: 7758884.
    Abstract:
    Increased erythrocyte sodium-lithium countertransport rate is found in non-diabetic subjects with essential hypertension, and in insulin-dependent diabetic subjects with nephropathy. However, relationships between these variables in non-insulin-dependent diabetic subjects are ill-defined. In order to characterise the relationships between blood pressure, urinary albumin excretion, and erythrocyte sodium-lithium countertransport, 66 subjects with non-insulin-dependent diabetes were studied. Urinary albumin excretion rate correlated with mean 24-h ambulatory systolic blood pressure (r = 0.57; p < 0.001), but not with sodium-lithium countertransport (r = 0.06; p = 0.31). No significant relationship was observed between 24-h systolic blood pressure and erythrocyte sodium-lithium countertransport (r = 0.16; p = 0.17). The principal differences between microalbuminuric and normoalbuminuric subjects (albumin excretion rate > 15 micrograms.min-1 [n = 20], and < 15 micrograms.min-1, [n = 46]) were: higher 24-h systolic blood pressure (145.9 [16.8] mmHg vs 131.9 [16.8] mmHg; p = 0.006), nocturnal heart rate (72.4 [8.9] vs 67.4 [8.9] beats.min-1; p = 0.042), and HbA1 (11.3 [1.5]% vs 10.1 [2.0]%; p = 0.028), and a longer median duration of diabetes (10.0 vs 5.0 years; p = 0.02). In contrast, there was no significant difference in sodium-lithium countertransport rate between microalbuminuric (0.41 [0.18] mmol.l-1.h-1) and normoalbuminuric subjects (0.39 [0.15] mmol.l-1.h-1; p = 0.687).(ABSTRACT TRUNCATED AT 250 WORDS)
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