| The Insulin-Like Growth Factor System, Metabolic Syndrome, and Cardiovascular Disease Risk. | |
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MedLine Citation:
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PMID: 22103319 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Abstract The metabolic syndrome is a combination of metabolic and clinical features that aggregate in individuals and increase cardiovascular disease (CVD) risk considerably. It is believed, although sometimes controversially, that the underlying basis for this syndrome is insulin resistance (IR) and accompanying compensatory hyperinsulinemia. Insulin and insulin-like growth factors (IGFs) have significant homology and interact with differing affinity with the same receptors. Therefore, their actions can be complementary, and this becomes particularly significant clinico-pathologically when their circulating levels are altered. This review of currently available information attempts to answer the following questions: (1) Is there any evidence for changes in the components of the IGF system in individuals with established CVD or with increased CVD risk as with the metabolic syndrome? (2) What are the underlying mechanisms for interactions, if any, between insulin and the IGF system, in the genesis of CVD? (3) Can knowledge of the pathophysiological changes in the IGF system observed in macrosomic newborn infants and growth hormone (GH)-treated children and adults explain some of the observations in relation to the IGF system and the metabolic syndrome? (4) Can the experimental and clinical evidence adduced from the foregoing be useful in designing novel therapies for the prevention, treatment, and assignment of prognosis in metabolic syndrome-associated disease, particularly ischemic heart disease? To answer these questions, we have performed a literature review using bibliographies from PubMed, Medline, and Google Scholar published within the last 10 years. We suggest that IGF-1 levels are reduced consistently in individuals with the metabolic syndrome and its components and in those with ischemic CVD. Such changes are also seen with GH deficiency in which these changes are partially reversible with GH treatment. Furthermore, changes are seen in levels and interactions of IGF-binding proteins in these disorders, and some of these changes appear to be independent of IGF-binding capability and could potentially impact on risk for the metabolic syndrome and CVD. The promising therapeutic implications of these observations are also discussed. |
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Authors:
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Abayomi O Akanji; Robert J Smith |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-11-21 |
Journal Detail:
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Title: Metabolic syndrome and related disorders Volume: - ISSN: 1557-8518 ISO Abbreviation: - Publication Date: 2011 Nov |
Date Detail:
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Created Date: 2011-11-22 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101150318 Medline TA: Metab Syndr Relat Disord Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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Diabetes & Endocrinology Unit, Alpert Medical School, Brown University , Providence, Rhode Island. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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