Serum Lp(a) lipoprotein concentrations in insulin dependent diabetic patients with microalbuminuria.
OBJECTIVE
To compare the serum concentrations of lipoproteins and apolipoproteins in insulin dependent diabetic patients with and without microalbuminuria.


METHODS
Cross sectional study.


METHODS
Paediatric and medical outpatient clinic at a university hospital.


METHODS
76 insulin dependent diabetic patients: 41 with microalbuminuria (20 males, 21 females) and 35 controls without microalbuminuria (18 males, 17 females). The two groups were similar with respect to age, duration of disease, and haemoglobin A1c concentrations before the study.


METHODS
Serum concentrations of Lp(a) lipoprotein, total cholesterol, high density lipoprotein cholesterol, very low density lipoprotein cholesterol, low density lipoprotein cholesterol, triglycerides, and apolipoproteins A-I, A-II, and B.


RESULTS
Median serum Lp(a) lipoprotein concentration was 10.0 mg/100 ml in the microalbuminuric group and 4.9 mg/100 ml in the control group (p = 0.007). 17 (41%) of the microalbuminuric patients and five (14%) of the control patients had Lp(a) lipoprotein values above the upper quartile of a normal population. Median serum triglycerides concentrations in the microalbuminuric and control groups were 1.15 mmol/l and 0.88 mmol/l respectively (p = 0.03). Median very low density lipoprotein cholesterol concentration was 0.52 mmol/l in the microalbuminuric group and 0.40 mmol/l in the control group (p = 0.03). No significant differences in serum concentrations of total cholesterol, high density lipoprotein cholesterol, low density lipoprotein cholesterol, or apolipoproteins A-I, A-II, and B were found between the groups.


CONCLUSIONS
Serum concentrations of Lp(a) lipoprotein are twice as high in insulin dependent diabetic patients with microalbuminuria as in those without microalbuminuria. Increased concentrations of Lp(a) lipoprotein might partly explain the increased morbidity and mortality from cardiovascular disease observed among patients with diabetic nephropathy.
Kapelrud
H
H
Aker University Hospital, Oslo, Norway.
Bangstad
H J
HJ
Dahl-Jørgensen
K
K
Berg
K
K
Hanssen
K F
KF
D000293:Adolescent; D000328:Adult; D000419:Albuminuria / Q000097:blood*; D001053:Apolipoproteins / Q000097:blood; D002784:Cholesterol / Q000097:blood; D003430:Cross-Sectional Studies; D003922:Diabetes Mellitus, Type 1 / Q000097:blood*; D003928:Diabetic Nephropathies / Q000097:blood*; D005260:Female; D006801:Humans; D017270:Lipoprotein(a); D008074:Lipoproteins / Q000097:blood*; D008297:Male; D008875:Middle Aged; D014280:Triglycerides / Q000097:blood
D001053:Apolipoproteins; D017270:Lipoprotein(a); D008074:Lipoproteins; D014280:Triglycerides; D002784:Cholesterol