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Influence of poloxamer 407 on fractional and subfractional composition of serum lipoproteins of mice

Health 2010年第7期2卷 722-730页

作者： Tatyana A. Korolenko Fedor V. Tuzikov Thomas p. Johnston Natalia A. Tuzikova Elena E. Filjushina Viktoriya M. Loginova Natalia G. Savchenko 不详

Using a novel small-angle X-ray scattering (SAXS) method for determination of fractional and subfractional composition of lipoproteins (Lps), a significant elevation of total cholesterol-lipop- roteins (C-Lp) and, especially, total triglyceride- lipoproteins (TG-Lp), was shown in this work. Among the Lp fractions, poloxamer 407 was shown to significantly increase proatherogenic total C-LDL, TG-LDL and, especially, their precursors C-VLDL and TG-VLDL, while only exhibiting a moderate increase in the antiatherogenic C-HDL and TG-HDL fractions. With regard to the VLDL subfractions, significant elevations were observed in both subfractions studied;namely, C-VLDL1-2 and C-VLDL3-5. Similar chang- es were noted in the TG-VLDL1-2 and TG- VLDL3-5 subfractions. The C-IDL and TG-IDL subfractions were increased significantly (?20- to 30- fold), while the C-LDL1-3 subfraction was moderately (?3- to 5-fold) increased at 48 hrs and at day 4. In the moderately elevated (?2- to 4-fold) anti-atherogenic HDL fraction, the C-HDL2 subfraction was increased more significantly (?4- fold) compared to the C-HDL3 subfraction;how- ever, both C-HDL subfractions returned to base- line by day 4. The elevation in the TG-HDL2 subfraction was observed only at 24 hrs. Mouse models of hyperlipidemia and atherosclerosis are useful to evaluate the role of “individual” Lps, as well as their fractions and subfractions, in hyperlipidemia and the genesis of atherosclerosis.

关键词： poloxamer p-407 Dyslipidemia Serum Lipoprotein Fractions and Subfractions

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