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ARTICLE |

Insulin-like Growth Factor and Apolipoprotein B FREE

Richard E. Ostlund, Jr, MD; Myrlene A. Staten, MD; Wendy M. Kohrt, PhD; Kathleen A. Obert, RD; William H. Daughaday, MD
JAMA. 1991;266(14):1937-1938. doi:10.1001/jama.1991.03470140049019
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To the Editor.  —Apolipoprotein B (apo B) is the principal protein component of the atherogenic lipoproteins low-density (LDL) and very-low-density (VLDL). The factors that regulate plasma apo B levels are of particular interest since in some data apo B is more closely related to coronary heart disease than LDL or VLDL cholesterol.1 We wondered whether insulin-like growth factor I (IGF-I) might be such a factor since the infusion of recombinant IGF-I recently was reported to lower plasma cholesterol levels.2-4 Indeed, previous work had shown that IGF-I deficiency states were accompanied by hypercholesterolemia.5-7 Our hypothesis was that apo B—containing lipoproteins were inversely related to circulating IGF-I in normal subjects.Insulin-like growth factor I,8 insulin-like growth factor II (IGF-II),9 and apo B10 were measured in serum frozen at —70° obtained from 148 well-characterized, healthy men and women between the ages of 60 and 70 years for

REFERENCES

Sniderman A, Shapiro S, Marpole D, Skinner B, Teng B, Kwiterovich PO Jr.  Association of coronary atherosclerosis with hyperapobetalipoproteinemia (increased protein but normal cholesterol levels in human plasma low-density (B) lipoproteins). Proc Natl Acad Sci USA . 1980;;77:604-608.
Lieberman SA, Chen SA, Albu BV, et al. Effects of multiple injections of rhIGF-I on free IGF-I disposition and glycemic response in humans. Second International Symposium on Insulin-like Growth Factors/Somatomedins; 1991; Abstract D 3.
Guler HP, Zapf J, Schmid C, Froesch ER.  Effects of rhIGF-I in man: possible therapeutic usefulness in states characterized by relative insulin resistance and in kidney disease.  In: Sara VR, Hall K, Loew H, eds. Growth Factors: From Genes to Clinical Application . New York, NY: Raven Press; 1990;:217-225.
Laron Z, Klinger B, Erster B. Biochemical and hormonal effects of 7-day administration of rhIGF-I to Laron-type dwarfism (LTD) patients. In: Program of the Endocrine Society Annual Meeting; 1990. Abstract 204.
Salomon F, Cuneo RC, Hesp R, Sonksen PH.  The effects of treatment with recombinant human growth hormone on body composition and metabolism in adults with growth hormone deficiency. N Engl J Med . 1989;;321:1797-1803.
Merimee TJ.  Familial combined hyperlipoproteinemia: evidence for a role of growth hormone deficiency in effecting its manifestation. J Clin Invest . 1980;;65:829-835.
Hoogerbrugge-v.d.Linden N, Jansen H, Hülsmann WC, Birkenhäger JC.  Relationship between insulin-like growth factor-I and low-density lipoprotein cholesterol levels in primary hypothyroidism in women. J Endocrinol . 1989;;123: 341-345.
Furlanetto RW, Underwood LE, Van Wyk JJ, D'Ercole AJ.  Estimation of somatomedin-C levels in normals and patients with pituitary disease by radioimmunoassay. J Clin Invest . 1977;;60:648-657.
Daughaday WH, Kapadia M.  Significance of abnormal serum binding of insulin-like growth factor II in the development of hypoglycemia in patients with non-islet-cell tumors. Proc Natl Acad Sci USA . 1989;;86:6778-6782.
Ordovas JM, Peterson JP, Santaniello P, Cohn JS, Wilson PWF, Schaefer EJ.  Enzyme-linked immunosorbent assay for human plasma apolipoprotein B. J Lipid Res . 1987;;28:1216-1224.
Ostlund RE Jr, Staten M, Kohrt WM, Schultz J, Malley M.  The ratio of waist-to-hip circumference, plasma insulin level, and glucose intolerance as independent predictors of the HDL2 cholesterol level in older adults. N Engl J Med . 1990;;322:229-234.
Chait A, Ross R, Albers JJ, Bierman EL.  Plateletderived growth factor stimulates activity of low-density lipoprotein receptors. Proc Natl Acad Sci USA . 1980;;77:4084-4088.
Veldhuis JD, Nestler JE, Strauss JF III.  The insulin-like growth factor, somatomedin-C, modulates low-density lipoprotein metabolism by swine granulosa cells. Endocrinology . 1987;;121:340-346.
NimerSD, Champlin RE, Golde DW.  Serum cholesterol-lowering activity of granulocyte-macrophage colony-stimulating factor. JAMA . 1988;;260:3297-3300.
Vega GL, Grundy SM.  Does measurement of apolipoprotein B have a place in cholesterol management? Arteriosclerosis . 1990;;10:668-671.

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Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

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Sniderman A, Shapiro S, Marpole D, Skinner B, Teng B, Kwiterovich PO Jr.  Association of coronary atherosclerosis with hyperapobetalipoproteinemia (increased protein but normal cholesterol levels in human plasma low-density (B) lipoproteins). Proc Natl Acad Sci USA . 1980;;77:604-608.
Lieberman SA, Chen SA, Albu BV, et al. Effects of multiple injections of rhIGF-I on free IGF-I disposition and glycemic response in humans. Second International Symposium on Insulin-like Growth Factors/Somatomedins; 1991; Abstract D 3.
Guler HP, Zapf J, Schmid C, Froesch ER.  Effects of rhIGF-I in man: possible therapeutic usefulness in states characterized by relative insulin resistance and in kidney disease.  In: Sara VR, Hall K, Loew H, eds. Growth Factors: From Genes to Clinical Application . New York, NY: Raven Press; 1990;:217-225.
Laron Z, Klinger B, Erster B. Biochemical and hormonal effects of 7-day administration of rhIGF-I to Laron-type dwarfism (LTD) patients. In: Program of the Endocrine Society Annual Meeting; 1990. Abstract 204.
Salomon F, Cuneo RC, Hesp R, Sonksen PH.  The effects of treatment with recombinant human growth hormone on body composition and metabolism in adults with growth hormone deficiency. N Engl J Med . 1989;;321:1797-1803.
Merimee TJ.  Familial combined hyperlipoproteinemia: evidence for a role of growth hormone deficiency in effecting its manifestation. J Clin Invest . 1980;;65:829-835.
Hoogerbrugge-v.d.Linden N, Jansen H, Hülsmann WC, Birkenhäger JC.  Relationship between insulin-like growth factor-I and low-density lipoprotein cholesterol levels in primary hypothyroidism in women. J Endocrinol . 1989;;123: 341-345.
Furlanetto RW, Underwood LE, Van Wyk JJ, D'Ercole AJ.  Estimation of somatomedin-C levels in normals and patients with pituitary disease by radioimmunoassay. J Clin Invest . 1977;;60:648-657.
Daughaday WH, Kapadia M.  Significance of abnormal serum binding of insulin-like growth factor II in the development of hypoglycemia in patients with non-islet-cell tumors. Proc Natl Acad Sci USA . 1989;;86:6778-6782.
Ordovas JM, Peterson JP, Santaniello P, Cohn JS, Wilson PWF, Schaefer EJ.  Enzyme-linked immunosorbent assay for human plasma apolipoprotein B. J Lipid Res . 1987;;28:1216-1224.
Ostlund RE Jr, Staten M, Kohrt WM, Schultz J, Malley M.  The ratio of waist-to-hip circumference, plasma insulin level, and glucose intolerance as independent predictors of the HDL2 cholesterol level in older adults. N Engl J Med . 1990;;322:229-234.
Chait A, Ross R, Albers JJ, Bierman EL.  Plateletderived growth factor stimulates activity of low-density lipoprotein receptors. Proc Natl Acad Sci USA . 1980;;77:4084-4088.
Veldhuis JD, Nestler JE, Strauss JF III.  The insulin-like growth factor, somatomedin-C, modulates low-density lipoprotein metabolism by swine granulosa cells. Endocrinology . 1987;;121:340-346.
NimerSD, Champlin RE, Golde DW.  Serum cholesterol-lowering activity of granulocyte-macrophage colony-stimulating factor. JAMA . 1988;;260:3297-3300.
Vega GL, Grundy SM.  Does measurement of apolipoprotein B have a place in cholesterol management? Arteriosclerosis . 1990;;10:668-671.
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