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Ann Clin Biochem. 2014 Jul;51(Pt 4):468-75. doi: 10.1177/0004563213499145. Epub 2013 Sep 30.

Insulin-like growth factor-II and insulin-like growth factor binding protein-2 prospectively predict longitudinal elevation of HDL-cholesterol in type 2 diabetes.

Author information

  • 1Vascular Research Group, The University of Manchester, Manchester, UK.
  • 2School of Community Based Medicine, The University of Manchester, Manchester, UK.
  • 3Endocrinology and Diabetes, Faculty of Medical, Human and Life Sciences, The University of Manchester, Manchester, UK.
  • 4Department of Biochemistry, Leighton Hospital, Crewe, UK.
  • 5Salford R&D, Salford Royal Hospital NHS Foundation Trust, Salford, UK.
  • 6Vascular Research Group, The University of Manchester, Manchester, UK Department of Medicine, Leighton Hospital, Crewe, UK adrian.heald@mcht.nhs.uk.

Abstract

INTRODUCTION:

Associations of insulin-like growth factor-II (IGF-II) and insulin-like growth factor binding protein-2 (IGFBP-2) with cardiovascular risk have been inadequately studied. We hypothesized that IGF-II and IGFBP-2 associate with longitudinal trends in lipid profiles in type 2 diabetes patients.

SUBJECTS AND METHODS:

Four hundred and eighty nine subjects with type 2 diabetes (age 27-87 years) from the Salford Diabetes Cohort were studied. Longitudinal clinical information was extracted for an eight-year period (2002-2009) from an integrated electronic dataset of primary care and hospital data.

RESULTS:

There were 294 male subjects and mean age was 62.9 years. At baseline, IGF-II concentration was 602 ng/mL. HDL cholesterol at baseline was associated with log-IGF-II concentration in a model adjusted for age, gender, baseline body-mass index (BMI), estimated glomerular filtration rate (eGFR) and lipid-lowering therapy. IGFBP-1 and IGFBP-2 were associated with high HDL-cholesterol. A higher circulating IGF-II concentration at baseline was also associated with longitudinal increase in HDL-cholesterol in mixed-effects regression analyses independent of IGF-I, IGFBP-1, IGFBP-2, IGFBP-3, age, gender, eGFR, BMI and lipid-lowering therapy. Log-transformed baseline concentrations of IGFBP-1 and IGFBP-2 were also associated with longitudinal elevation in HDL-cholesterol. No association was observed for IGF-II or IGFBP-2 with longitudinal LDL cholesterol trends.

CONCLUSION:

Our analyses based on 'real world' data demonstrate that higher baseline IGF-II and IGFBP-2 predict increased HDL concentration over time, implicating IGF-II in modulation of circulating HDL-cholesterol concentrations.

KEYWORDS:

HDL-cholesterol; Insulin-like growth factor-II; cholesterol; insulin-like growth factor binding protein-2; prospective; type 2 diabetes

PMID:
24081183
DOI:
10.1177/0004563213499145
[PubMed - indexed for MEDLINE]
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