TY - JOUR
T1 - Lysophosphatidylcholine contents in plasma LDL in patients with type 2 diabetes mellitus
T2 - Relation with lipoprotein-associated phospholipase A2 and effects of simvastatin treatment
AU - Iwase, Masanori
AU - Sonoki, Kazuo
AU - Sasaki, Nobuhiro
AU - Ohdo, Shigehiro
AU - Higuchi, Shun
AU - Hattori, Hiroaki
AU - Iida, Mitsuo
PY - 2008/2/1
Y1 - 2008/2/1
N2 - Increased lipoprotein-associated PLA2 (Lp-PLA2) predicts the future development of cardiovascular diseases. Although lysophosphatidylcholine (lyso-PC) produced by Lp-PLA2 may contribute to its proatherogenic activity, the relation between Lp-PLA2 and lyso-PC content in LDL remains unclarified. We determined the correlation between lyso-PC content in LDL and serum concentrations of Lp-PLA2, chemokines, oxidative and inflammatory markers and microvascular complications in 32 patients with type 2 diabetes mellitus free of macroangiopathy. We also investigated the effect of simvastatin treatment on Lp-PLA2 and lyso-PC content in 26 hypercholesterolemic patients with type 2 diabetes mellitus. 1-palmitoyl lyso-PC was measured using electrospray ionization-liquid chromatography/mass spectrometry and Lp-PLA2 by ELISA. Lyso-PC content in LDL was significantly higher in diabetic patients than in control healthy subjects. Lyso-PC content correlated significantly with Lp-PLA2 levels (r = 0.56, p < 0.0001), and was significantly higher in patients with preproliferative or proliferative retinopathy and those with nephropathy than the control. Simvastatin treatment reduced serum Lp-PLA2 and lyso-PC content in LDL. Our findings suggest that Lp-PLA2 has the proatherogenic activity by contributing to the production of lyso-PC in circulating LDL.
AB - Increased lipoprotein-associated PLA2 (Lp-PLA2) predicts the future development of cardiovascular diseases. Although lysophosphatidylcholine (lyso-PC) produced by Lp-PLA2 may contribute to its proatherogenic activity, the relation between Lp-PLA2 and lyso-PC content in LDL remains unclarified. We determined the correlation between lyso-PC content in LDL and serum concentrations of Lp-PLA2, chemokines, oxidative and inflammatory markers and microvascular complications in 32 patients with type 2 diabetes mellitus free of macroangiopathy. We also investigated the effect of simvastatin treatment on Lp-PLA2 and lyso-PC content in 26 hypercholesterolemic patients with type 2 diabetes mellitus. 1-palmitoyl lyso-PC was measured using electrospray ionization-liquid chromatography/mass spectrometry and Lp-PLA2 by ELISA. Lyso-PC content in LDL was significantly higher in diabetic patients than in control healthy subjects. Lyso-PC content correlated significantly with Lp-PLA2 levels (r = 0.56, p < 0.0001), and was significantly higher in patients with preproliferative or proliferative retinopathy and those with nephropathy than the control. Simvastatin treatment reduced serum Lp-PLA2 and lyso-PC content in LDL. Our findings suggest that Lp-PLA2 has the proatherogenic activity by contributing to the production of lyso-PC in circulating LDL.
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U2 - 10.1016/j.atherosclerosis.2007.02.012
DO - 10.1016/j.atherosclerosis.2007.02.012
M3 - Article
C2 - 17350631
AN - SCOPUS:38349186592
VL - 196
SP - 931
EP - 936
JO - Atherosclerosis
JF - Atherosclerosis
SN - 0021-9150
IS - 2
ER -