Circulating Sphingolipids, Insulin, HOMA-IR and HOMA-B: the Strong Heart Family Study.

MedStar author(s):
Citation: Diabetes. 67(8):1663-1672, 2018 08.PMID: 29588286Institution: MedStar Health Research InstituteForm of publication: Journal ArticleMedline article type(s): Journal ArticleSubject headings: *Cardiovascular Diseases/et [Etiology] | *Insulin Resistance | *Insulin/bl [Blood] | *Obesity/me [Metabolism] | *Overweight/me [Metabolism] | *Prediabetic State/et [Etiology] | *Sphingolipids/bl [Blood] | Adult | Arizona/ep [Epidemiology] | Biomarkers/bl [Blood] | Body Mass Index | Cardiovascular Diseases/eh [Ethnology] | Cardiovascular Diseases/ep [Epidemiology] | Ceramides/bl [Blood] | Ceramides/ch [Chemistry] | Cohort Studies | Cross-Sectional Studies | Fatty Acids/an [Analysis] | Fatty Acids/bl [Blood] | Female | Humans | Indians, North American | Insulin Resistance/eh [Ethnology] | Longitudinal Studies | Male | Middle Aged | Midwestern United States/ep [Epidemiology] | Obesity/bl [Blood] | Obesity/eh [Ethnology] | Obesity/pp [Physiopathology] | Overweight/bl [Blood] | Overweight/eh [Ethnology] | Overweight/pp [Physiopathology] | Prediabetic State/eh [Ethnology] | Prediabetic State/ep [Epidemiology] | Risk Factors | Sphingolipids/ch [Chemistry] | Young AdultYear: 2018Local holdings: Available online from MWHC library: 1995 - present (after 3 months), Available in print through MWHC library: 1999 - 2006ISSN:
  • 0012-1797
Name of journal: DiabetesAbstract: Copyright (c) 2018 by the American Diabetes Association.Experimental studies suggest ceramides may play a role in insulin resistance. However, the relationships of circulating ceramides and related sphingolipids with plasma insulin have been underexplored in humans. We measured 15 ceramide and sphingomyelin species in fasting baseline samples from the Strong Heart Family Study, a prospective cohort of American Indians. We examined sphingolipid associations with both baseline and follow-up measures of plasma insulin, Homeostatic Model Assessment of Insulin Resistance (HOMAIR) and Homeostatic Model Assessment of beta-cell function (HOMAB) after adjustment for risk factors. Among 2086 participants without diabetes, higher levels of plasma ceramides carrying the fatty acids 16:0 (16 carbons, 0 double bond), 18:0, 20:0 or 22:0 were associated with higher plasma insulin and higher HOMAIR at baseline and at follow-up an average of 5.4 years later. For example, a two-fold higher baseline concentration of ceramide-16:0 was associated with 14% higher baseline insulin (p<0.0001). Associations between sphingomyelin species carrying 18:0, 20:0, 22:0 or 24:0 and insulin were modified by BMI (p<0.003): higher levels were associated with lower fasting insulin, HOMAIR and HOMAB among those with normal BMI. Our study suggests lowering circulating ceramides might be a target in pre-diabetes, and targeting circulating sphingomyelins should take into account BMI.All authors: Fretts AM, Hari N, Hoofnagle A, Howard BV, Jensen P, King IB, Lemaitre RN, McKnight B, Siscovick DS, Sitlani CM, Sotoodehnia N, Umans JG, Yu CFiscal year: FY2019Digital Object Identifier: Date added to catalog: 2018-04-20
Holdings
Item type Current library Collection Call number Status Date due Barcode
Journal Article MedStar Authors Catalog Article 29588286 Available 29588286

Available online from MWHC library: 1995 - present (after 3 months), Available in print through MWHC library: 1999 - 2006

Copyright (c) 2018 by the American Diabetes Association.

Experimental studies suggest ceramides may play a role in insulin resistance. However, the relationships of circulating ceramides and related sphingolipids with plasma insulin have been underexplored in humans. We measured 15 ceramide and sphingomyelin species in fasting baseline samples from the Strong Heart Family Study, a prospective cohort of American Indians. We examined sphingolipid associations with both baseline and follow-up measures of plasma insulin, Homeostatic Model Assessment of Insulin Resistance (HOMAIR) and Homeostatic Model Assessment of beta-cell function (HOMAB) after adjustment for risk factors. Among 2086 participants without diabetes, higher levels of plasma ceramides carrying the fatty acids 16:0 (16 carbons, 0 double bond), 18:0, 20:0 or 22:0 were associated with higher plasma insulin and higher HOMAIR at baseline and at follow-up an average of 5.4 years later. For example, a two-fold higher baseline concentration of ceramide-16:0 was associated with 14% higher baseline insulin (p<0.0001). Associations between sphingomyelin species carrying 18:0, 20:0, 22:0 or 24:0 and insulin were modified by BMI (p<0.003): higher levels were associated with lower fasting insulin, HOMAIR and HOMAB among those with normal BMI. Our study suggests lowering circulating ceramides might be a target in pre-diabetes, and targeting circulating sphingomyelins should take into account BMI.

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