Lipoproteins fraction

Lipoprotein fraction with apolipoprotein A-I as structural protein. HDL is believed to carry cholesterol away from the blood vessels and back to the liver. High... 

Lipoprotein fraction containing triglycerides and to a lesser degree cholesterol. VLDL is produced by the liver. The main structural protein connected to this lipoprotein class is apolipoprotein B. 

VAN DEN BERG H and VAN VLIET T (1998) Effects of simultaneous, single oral doses of 3-carotene, with lutein or lycopene on the (3-carotene and retinyl ester responses in the triacylglycerol-rich lipoprotein fractions in men. Am J Clin Nutr 68(1) 82-89. 

VAN HET HOF K H, DE BOER B C, TIJBURG L B, LUCIUS B R, ZIJP I, WEST C E, HAUTVAST J G and WESTRATE J A (2000) Carotenoid bioavailability in humans from tomatoes processed in different ways determined from the carotenoid response in the triglyceride-rich lipoprotein fraction of plasma after a single consumption and in plasma after 4 days of consumption. JNutr 130(5) 1189-96. 

Both intact carotenoids and their apolar metabolites (retinyl esters) are secreted into the lymphatic system associated with CMs. In the blood circulation, CM particles undergo lipolysis, catalyzed by a lipoprotein lipase, resulting in the formation of CM remnants that are quickly taken up by the liver. In the liver, the remnant-associated carotenoid can be either (1) metabolized into vitamin A and other metabolites, (2) stored, (3) secreted with the bile, or (4) repackaged and released with VLDL particles. In the bloodstream, VLDLs are transformed to LDLs, and then HDLs by delipidation and the carotenoids associated with the lipoprotein particles are finally distributed to extrahepatic tissues (Figure 3.2.2). Time-course studies focusing on carotenoid appearances in different lipoprotein fractions after ingestion showed that CM carotenoid levels peak early (4 to 8 hr) whereas LDL and HDL carotenoid levels reach peaks later (16 to 24 hr). 

Van Vliet, T., Schreurs, W.H.P., and Van den Berg, H., Intestinal 3-carotene absorption and cleavage in men response of P-carotene and retinyl esters in the triglyceride-rich lipoprotein fraction after a single oral dose of P-carotene, Am. J. Clin. Nutr, 62, no, 1995. 

When 100 mg of synthetic astaxanthin in olive-oil-containing meal was given to male volunteers, a maximum plasma concentration of 1.24 mg/L astaxanthin was observed in the first 6 hours postprandially. The relative concentration of total astaxanthin in HDL decreased compared to the other lipoprotein fractions in the 72-hour study. 

Nishigaki, 1., Hagjhara, M., Tsunekawa, H., Maseki, M. and Yagi, K. (1981). Lipid peroxide levels of serum lipoprotein fractions of diabetic patients. Biochem. Med. 25, 373-378. 

M. E. O Neill and D. I. Thumham, Intestinal absorption of beta-carotene, lycopene and lutein in men and women following a standard meal Response curves in the triacylglycerol-rich lipoprotein fraction, Br. J. Nutr. 79 (1998) 149-159. 

Marz W, Grutzmacher P, Paul D, Siekmeier R, Schoeppe W, Gross W. Effects of lovastatin [20-80 mg daily) on lipoprotein fractions in patients with severe primary hypercholesterolemia. Int J Clin Pharmacol Ther 1994 32 92-97. 

Soine PJ, Blanke RV, Guzelian PS, et al. 1982. Preferential binding of chlordecone to the protein and high density lipoprotein fractions of plasma from humans and other species. J Toxicol Environ Health 9 107-118. 

Lp(a), moving, like very low-density lipoproteins (VLDL), in the pre-(3,-lipoprotein fraction upon electrophoresis (B8, B9), but not floating like VLDL in ultracentrifugation (H29), partly resembles low-density lipoprotein (LDL). Its protein moiety consists of one glycoprotein molecule, named apolipoprotein (a)... 

Fig. 6. Mean distribution of apo(a) among lipoprotein fractions in nine subjects. [With permission of Reblin et al. (R4).]...

D2. Dahlen, G., Ericson, C., Furberg, C., Lundkvist, L., and Svardsudd, K., Studies on an extrapre-beta lipoprotein fraction. Acta Med. Scand., Suppl. 531, 1-29 (1972). 

K21. Knoblock, E., Hall, C., and Hall, J., Correlation of pre-beta lipoprotein fractions with history... 

Table 4. Most important lipid-lowering drugs available at present. An indication is given of the most relevant changes in the plasma lipoprotein fractions caused by these agents...

Apoptosis induction. Lipoprotein fraction of the bran, in cell culture at a concentration of 100 pg/mL, was active vs human endometrial adenocarcinoma cells " . 

One of the primary reactions of ionizing radiation with saturated fatty acids is decarboxylation and alkane formation (2). Dimers tend to be produced by reaction of ionizing radiation with unsaturated fatty acids (2). When meats are irradiated C -C 7 n-alkanes, C2-C17 n-alkenes, and C4-Cg iso-alkanes are the predominant products from the lipid fraction (10), Irradiation of the lipoprotein fraction of meat results in the formation of the following volatile compounds Ci-C 7 n-alkanes, C2-C1J n-alkenes, dimethyl sulfide, benzene, and toluene (10). 

Not necessary. Relative distribution between the five lipoprotein fractions of an individual is analyzed. 

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