Abstract
While the conventional approach to assessing both the risk of coronary artery disease and the adequacy of therapy is LDL cholesterol testing, there is compelling evidence to suggest that apolipoprotein B (apoB) is superior to LDL cholesterol for both of these purposes. However, the measurement of apoB requires techniques that can be expensive and difficult to standardize. The aim of this study was, therefore, to develop a new method, based on infrared (IR) spectroscopy, for the routine quantification of apoB in human serum. A total of 366 serum samples were obtained from patients with various disorders. Small volumes (2 μl) of serum specimens were dried to films, and duplicate IR absorption spectra measured. The reference apoB concentrations were determined separately using a standard method, and the proposed IR method was then calibrated using partial least squares (PLS) regression analysis to quantitatively correlate the IR spectra with the reference results. The apoB concentrations predicted from the IR spectra of serum were highly correlated and in excellent agreement with those determined by the reference method. The correlation coefficient (r) for apoB was 0.94, with the standard error between IR-predicted and reference values was 0.10 g/L. In combination with earlier work demonstrating the accurate determination of LDL-C, HDL-C, total cholesterol, and triglycerides from a single infrared spectroscopic measurement, the addition of accurate apoB determination from the same spectrum makes the method very attractive for laboratory use in the routine evaluation of coronary artery disease risk.
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Fuster V, Gotto AM, Libby P, Loscalzo J, McGill HC (1996) J Am Coll Cardiol 27:964–976
Sniderman AD, Junger I, Holme I, Aastveit A, Walldius G (2006) J Intern Med 259:455–461
Walldius G, Jungner I, Aastveit AH, Holme I, Furberg CD, Sniderman AD (2004) Clin Chem Lab Med 42:1355–1363
Barter PJ, Ballantyne CM, Carmena R, Castro Cabezas M, Chapman MJ, Couture P, de Graaf J, Durrington PN, Faergeman O, Frohlich J, Furberg CD, Gagne C, Haffner SM, Humphries SE, Jungner I, Krauss RM, Kwiterovich P, Marcovina S, Packard CJ, Pearson TA, Reddy KS, Rosenson R, Sarrafzadegan N, Sniderman AD, Stalenhoef AF, Stein E, Talmud PJ, Tonkin AM, Walldius G, Williams KM (2006) J Intern Med 259:247–258
Sniderman AD, St-Pierre AC, Cantin B, Dagenais GR, Despres JP, Lamarche B (2003) Am J Cardiol 91:1173–1177
Sniderman AD, Furberg CD, Keech A, Roeters van Lennep JE, Frohlich J, Jungner I, Walldius G (2003) Lancet 361:777–780
Sniderman AD (1997) Clin Chem 43:1310–1314
Sniderman AD (1992) Can J Cardiol 8:133–138
Walldius G, Jungner I (2006) J Intern Med 259:493–519
Gotto AM Jr, Whitney E, Stein EA, Shapiro DR, Clearfield M, Weis S, Jou JY, Langendorfer A, Beere PA, Watson OJ, Downs JR, de Calli JS (2000) Circulation 101:477–484
Pedersen TR, Olsson AG, Faergeman O, Kjekshus J, Wedel H, Berg K, Wilhelmsen L, Haghfelt T, Thorgeirsson G, Pyorala K, Miettinen T, Christophersen B, Tobert JA, Musliner TA, Cook TJ; Scandinavian Simavastatin Survival Study Group (2004) Atheroscler Suppl 5:99–106
Shaw RA, Kotowich S, Leroux M, Mantsch HH (1998) Ann Clin Biochem 35:624–632
Liu KZ, Shaw RA, Man A, Dembinski TC, Mantsch HH (2002) Clin Chem 48:499–506
Riepponen P, Marniemi J, Rautaoja T (1987) Scand J Clin Lab Investig 47:739–744
Brustolin D, Maierna M, Aguzzi F, Zoppi F, Tarenghi G, Berti G (1991) Clin Chem 37:742–747
Martens H, Næs T (1989) Multivariate calibration. Wiley, New York
Beebe K, Kowalski BR (1987) Anal Chem 59:1007a–1017a
Goormaghtigh E, De-Meutter J, Vanloo B, Brasseur R, Rosseneu M, Ruysschaert JM (1989) Biochim Biophys Acta 1006:147–150
Rifai N, Bachorik PS, Albers JJ (1999) Lipids, lipoproteins, and apolipoproteins. In: Burtis CA, Ashwood ER (eds) Tietz textbook of clinical chemistry, 3rd edn. W.B. Saunders, Philadelphia, PA, pp 809–861
Rosseneu M, Vercaemst R, Steinberg KK, Cooper GR (1983) Clin Chem 29:427–433
Pruvot I, Fievet C, Fruchart JC, Beucler I, Salmon S, Goldstein S, Ayrault-Jarrier M, Girault A (1987) Clin Chem 33:1070
Cano MD, Gonzalvo C, Scheen AJ, Castillo MJ (1994) Ann Biol Clin (Paris) 52:657–661
Bedford DK, Shepherd J, Morgan HG (1976) Clin Chim Acta 70:267–276
Curry MD, Gustafson A, Alaupovic P, McConathy WJ (1978) Clin Chem 24:280–286
Durrington PN, Whicher JT, Warren C, Bolton CH, Hartog M (1976) Clin Chim Acta 71:95–108
James RW, Ferrer M, Pometta D (1985) Clin Chim Acta 151:3124–3173
Ballantyne FC, Williamson J, Shapiro D, Caslake MJ, Perry B (1978) Clin Chem 24:788–792
Hallaway BJ, Rastogi A, Kottke BA (1992) Clin Chem 38:2387–2391
Rifai N, King ME (1986) Clin Chem 32:957–961
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The Dr. Paul H.T. Thorlakson Foundation is gratefully acknowledged for funding the work reported here.
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Liu, KZ., Man, A., Dembinski, T.C. et al. Quantification of serum apolipoprotein B by infrared spectroscopy. Anal Bioanal Chem 387, 1809–1814 (2007). https://doi.org/10.1007/s00216-006-0895-2
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DOI: https://doi.org/10.1007/s00216-006-0895-2