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  • 1
    Electronic Resource
    Electronic Resource
    Renal function and insulin sensitivity during simvastatin treatment in Type 2 (non-insulin-dependent) diabetic patients with microalbuminuria (1993)
    Springer
    Diabetologia 36 (1993), S. 1079-1086 
    Details
    ISSN: 1432-0428
    Keywords: Type 2 (non-insulin-dependent) diabetes mellitus ; microalbuminuria ; glomerular filtration rate ; plasma lipoproteins ; insulin sensitivity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The effect of simvastatin (10–20 mg/day) on kidney function, urinary albumin excretion rate and insulin sensitivity was evaluated in 18 Type 2 (non-insulin-dependent) diabetic patients with microalbuminuria and moderate hypercholesterolaemia (total cholesterol ≥5.5 mmol·l−1). In a double-blind, randomized and placebo-controlled design treatment with simvastatin (n=8) for 36 weeks significantly reduced total cholesterol (6.7±0.3 vs 5.1 mmol·l−1 (p〈0.01)), LDL-cholesterol (4.4±0.3 vs 2.9±0.2 mmol·l−1 (p〈0.001)) and apolipoprotein B (1.05±0.04 vs 0.77±0.02 mmol·l−1 (p〈0.01)) levels as compared to placebo (n=10). Both glomerular filtration rate (mean±SEM) (simvastatin: 96.6±8.0 vs 96.0±5.7 ml·min−1·1.73 m−2, placebo: 97.1±6.7 vs 88.8±6.0 ml·min−1·1.73 m−2) (NS) and urinary albumin excretion rate (geometric mean x/÷ antilog SEM) (simvastatin: 18.4x/÷1.3vs 16.2 x/÷1.2 μg·min−1, placebo 33.1 x/÷ 1.3 vs 42.7 x/÷ 1.3 μg·min−1)(NS) were unchanged during the study. A euglycaemic hyperinsulinaemic clamp was performed at baseline and after 18 weeks in seven simvastatin-and nine placebo-treated patients. Isotopically determined basal and insulin-stimulated glucose disposal was similarly reduced before and during therapy in both the simvastatin (2.0±0.1 vs 1.9±0.1 (NS) and 3.1±0.6 vs 3.1±0.7 mg·kg−1·min−1 (NS)) and the placebo group (1.9±0.1 vs 1.8±0.1 (NS) and 4.1±0.6 vs 3.8±0.2 mg·kg−1·min−1 (NS)). No different was observed in glucose storage or glucose and lipid oxidation before and after treatment. Further, the suppression of hepatic glucose production during hyperinsulinaemia was not influenced by simvastatin (−0.7±0.8 vs −0.7±0.5 mg·kg−1·min−1 (NS)). In conclusion, despite marked improvement in the dyslipidaemia simvastatin had no impact on kidney function or urinary albumin excretion rate and did not reduce insulin resistance in these microalbuminuric and moderately hypercholesterolaemic Type 2 diabetic patients.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02374502
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  • 2
    Electronic Resource
    Electronic Resource
    Microalbuminuria, blood pressure and diabetic renal disease: origin and development of ideas (1999)
    Springer
    Diabetologia 42 (1999), S. 263-285 
    Details
    ISSN: 1432-0428
    Keywords: Keywords Type I diabetes ; Type II diabetes ; hyperfiltration ; microalbuminuria ; proteinuria ; diabetic nephropathy ; dextran clearance ; exercise ; diabetic nephropathy ; antihypertensive treatment ; angiotensin converting enzyme inhibition ; risk factors for nephropathy ; hyperglycaemia ; blood pressure ; hypertension ; metabolic syndrome ; glycaemic control ; meta-analysis.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001250051151
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  • 3
    Electronic Resource
    Electronic Resource
    Early recognition of autonomic dysfunction in microalbuminuria: significance for cardiovascular mortality in diabetes mellitus? (1994)
    Springer
    Diabetologia 37 (1994), S. 788-796 
    Details
    ISSN: 1432-0428
    Keywords: Autonomic function ; diabetes mellitus ; 24-h heart rate variability ; microalbuminuria ; sudden cardiac death ; vagal function ; autonomic neuropathy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The appearance of microalbuminuria in diabetic patients predicts development of macroalbuminuria and coronary heart disease. Autonomic dysfunction in ischaemic heart disease is related to an increased incidence of arrhythmic deaths. To assess sympathovagal balance in relation to microalbuminuria we performed 24-h spectral analysis of RR interval oscillations in 37 insulin-dependent diabetic patients. Patients were divided according to urinary albumin excretion as normo-(〈20 Μg/min) (n=12), micro-(〉20 and 〈200 Μg/min) (n=14) and macro-albuminuria (〉200 Μg/min) (n=11). None had symptoms or signs of ischaemic heart disease at clinical examination or during stress testing. Fourteen matched healthy subjects served as controls. Overall RR interval variability was calculated as the 24-h standard deviation. The square root of power of the low-frequency (0.04–0.15 Hz) and high-frequency (0.15–0.40 Hz) component were considered indices of the sympathovagal interaction and vagal function, respectively. Patients with micro and macroalbuminuria had, compared to control subjects, significantly reduced 24-h standard deviation, a much smaller day/night difference in mean RR level and a significantly reduced amplitude of the low frequency and high frequency oscillations, which were even more reduced in macroalbuminuria. The differences in vagal function were also present after correction for mean RR level, and differences in physical training level and smoking. Insulin-dependent diabetic patients who develop microalbuminuria have significantly impaired vagal function and abnormal sympathovagal interaction, which is further deranged in macroalbuminuria. This early autonomic dysfunction may later contribute to a increased risk for sudden cardiac death.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00404336
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  • 4
    Electronic Resource
    Electronic Resource
    24-h blood pressure and autonomic function is related to albumin excretion within the normoalbuminuric range in IDDM patients (1997)
    Springer
    Diabetologia 40 (1997), S. 718-725 
    Details
    ISSN: 1432-0428
    Keywords: Keywords Ambulatory blood pressure ; autonomic control ; heart rate variability ; spectral analysis ; IDDM ; microalbuminuria ; diabetic nephropathy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Significant changes in both blood pressure, autonomic function and kidney ultrastructure are observed in insulin-dependent diabetic (IDDM) patients with microalbuminuria. Intervention strategies are evaluated at even earlier stages of disease. Identification of patients at risk of developing microalbuminuria must be based on a thorough knowledge of the relations between key pathophysiological parameters in patients with normoalbuminuria. The aim of the present study was to characterize the interactions of urinary albumin excretion (UAE), 24-h ambulatory blood pressure (AMBP), and sympathovagal balance in a large group of normoalbuminuric IDDM patients. In 117 normoalbuminuric (UAE 〈 20 μg/min) patients we performed 24-h AMBP (Spacelabs 90 207), with assessment of diurnal blood pressure and heart rate (HR) variation, and short-term (three times 5 min) power spectral analysis of RR interval oscillations, as well as cardiovascular reflex tests (HR variation to deep breathing, postural HR and blood pressure response). Patients with UAE above the median (4.2 μg/min) had significantly higher 24-h systolic and diastolic AMBP (125 ± 10.1/76 ± 7.2 mmHg) compared to the low normoalbuminuric group (120 ± 8.4/74 ± 5.1 mmHg), p 〈 0.01 and 0.02, respectively. Patients with UAE above the median had significantly reduced short-term RR interval variability including both the high frequency component (5.47 ± 1.36 vs 6.10 ± 1.43 ln ms2), and low frequency component (5.48 ± 1.18 ln ms2 compared to 5.80 ± 1.41 ln ms2), p 〈 0.02 and p = 0.04 (ANOVA). In addition, patients with high-normal UAE had reduced mean RR level (faster heart rates) 916 ± 108 compared to 963 ± 140 ms, p 〈 0.04. These differences were not explained by age, duration of diabetes, gender, level of physical activity, or cigarette smoking. HbA1 c was significantly higher (8.6 ± 1.2 vs 8.2 ± 1.0 %, p = 0.03) in the group with high normal UAE. Comparing normoalbuminuric IDDM patients with UAE above and below the median value, we found significantly higher AMBP in combination with significant differences in sympathovagal balance and significantly poorer glycaemic control in the group with high-normal albumin excretion. Our data demonstrate interactions between albumin excretion, blood pressure, autonomic function, and glycaemic status, already present in the normoalbuminuric range and may describe a syndrome indicative of later complications. [Diabetologia (1997) 40: 718–725]
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001250050739
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  • 5
    Electronic Resource
    Electronic Resource
    Transcapillary escape rate and albuminuria in Type II diabetes. Effects of short-term treatment with low-molecular weight heparin (Short Communication) (1999)
    Springer
    Diabetologia 42 (1999), S. 60-67 
    Details
    ISSN: 1432-0428
    Keywords: Keywords Transcapillary escape rate of albumin ; microalbuminuria ; albuminuria ; low-molecular weight heparin ; heparin.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The relation between urinary albumin excretion rate (UAE), transcapillary escape rate of albumin (TERalb), haemostatic factors, ambulatory blood pressure, and metabolic variables was investigated in 45 Type II (non-insulin-dependent) diabetic patients without overt nephropathy or uncontrolled blood pressure. We enrolled 44 patients in a placebo controlled study to test the effects of 3 week long treatment with low-molecular weight heparin (tinzaparin) on the same variables. BMI, 24 h systolic and diastolic blood pressure, plasma concentrations of triglycerides, fasting glucose, factor VIII, von Willebrand factor (vWf), fibrinogen, α-2 macroglobulin, and fibronectin were notably higher in patients with increased albuminuria compared with normoalbuminuric patients, whereas the TERalb was similar in the two groups. TERalb correlated with fasting plasma glucose. UAE correlated more closely than TERalb with 24 h ambulatory blood pressure, vWf, and factor VIII. Urinary albumin excretion rate was unchanged during tinzaparin [28.9 ± 5.6 vs 28.1 ± 6.0 μg/min (geometric mean (antilog SD)] vs placebo (18.0 ± 5.4 vs 17.6 ± 5.3 μg/min), and no change was found in TERalb [6.3 ± 1.6 vs 6.0 ± 1.5 %/h (means ± SD), and 6.3 ± 1.5 vs 5.6 ± 1.8 %/h; tinzaparin versus placebo, respectively]. Only minor changes were observed in blood pressure, lipids, glycaemic control and haemostatic factors. This study shows no correlation between albuminuria and transcapillary escape rate in Type II diabetic patients without overt nephropathy or uncontrolled blood pressure. UAE is related to markers of atherosclerosis, endothelial injury and dysfunction, and haemostatic factors. Moreover, UAE correlates much more than TERalb with 24 h ambulatory blood pressure, von Willebrand factor, and factor VIII. Finally, short-term treatment with tinzaparin does not change the transvascular or glomerular leakage of albumin. These results indicate that TERalb is not a sensitive marker of microvascular dysfunction in such patients and that factors other than abnormal glycosaminoglycan metabolism may contribute to the vascular damage of these patients. [Diabetalogia (1999) 42: 60–67]
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001250051114
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  • 6
    Electronic Resource
    Electronic Resource
    Urinary albumin excretion rate and 24-h ambulatory blood pressure in NIDDM with microalbuminuria: effects of a monounsaturated-enriched diet (1995)
    Springer
    Diabetologia 38 (1995), S. 1069-1075 
    Details
    ISSN: 1432-0428
    Keywords: Non-insulin-dependent diabetes mellitus ; microalbuminuria ; blood pressure ; monounsaturated fat diet ; olive oil ; diet ; metabolic control
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Previous studies have shown that unsaturated fat-enriched diets may have a beneficial effect on blood pressure in non-insulin-dependent diabetic (NIDDM) patients, whereas little is known about the effects on albuminuria. In a 3-week cross-over design we compared the effects of a currently recommended high-carbohydrate diet (50% carbohydrate, 30% fat [10% monounsaturated fat]) vs a diet rich in monounsaturated fat (30% carbohydrate, 50% fat [30% monounsaturated fat]) on urinary albumin excretion rate, 24-h ambulatory blood pressure and metabolic control in ten NIDDM patients with persistent microalbuminuria. The 24-h ambulatory blood pressure was similar before and after both the high-carbohydrate diet (mean±SD: 145/78±25/10 vs 143/79±19/10 mmHg (NS) and the monounsaturated fat diet: 140/78±16/8 vs 143/79±15/8 mmHg (NS). No changes were observed in day or night-time blood pressures. Urinary albumin excretion rate was unaffected after 3 weeks' treatment by the diets: from (geometric mean ×/÷ tolerance factor) 32.4×/÷2.1 to 36.0×/÷1.9 Μg/min (NS) vs from 34.2×/÷1.9 to 32.1×/÷2.1 Μg/min (NS). Fasting plasma glucose, serum fructosamine and HbA1c as well as lipid and lipoprotein concentrations were stable during both diets. Compared to the high-carbohydrate diet a reduction in the LDL/HDL cholesterol ratio was observed during the monounsaturated fat diet (p〈0.03). In conclusion, compared to a high-carbohydrate diet, 3 weeks' treatment with a monounsaturated fat diet did not affect the levels of 24-h ambulatory blood pressure or albuminuria in microalbuminuric NIDDM patients. Moreover, glycaemic control and lipoprotein levels were unchanged, although a potential beneficial effect on the LDL/HDL-cholesterol ratio was noted. Monounsaturated fat represents an alternative in the diets of NIDDM patients especially when caloric intake is not a concern.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00402177
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