High fat intake leads to acute postprandial exposure to circulating endotoxin in type 2 diabetic subjects

Alison L. Harte, Madhusudhan C. Varma, Gyanendra Tripathi, Kirsty C. Mcgee, Nasser M. Al-Daghri, Omar S. Al-Attas, Shaun Sabico, Joseph P. O'Hare, Antonio Ceriello, Ponnusamy Saravanan, Sudhesh Kumar, Philip G. Mcternan

Research output: Contribution to journalArticle

Abstract

OBJECTIVE - To evaluate the changes in circulating endotoxin after a high-saturated fat meal to determine whether these effects depend on metabolic disease state. RESEARCH DESIGN AND METHODS - Subjects (n = 54) were given a high-fat meal (75 g fat, 5 g carbohydrate, 6 g protein) after an overnight fast (nonobese control [NOC]: age 39.9 ± 11.8 years [mean ± SD], BMI 24.9 ± 3.2 kg/m 2, n = 9; obese: age 43.8 ± 9.5 years, BMI 33.3 ± 2.5 kg/m 2, n = 15; impaired glucose tolerance [IGT]: age 41.7 ± 11.3 years, BMI 32.0 ± 4.5 kg/m 2, n = 12; type 2 diabetic: age 45.4 ± 10.1 years, BMI 30.3 ± 4.5 kg/m 2, n = 18). Blood was collected before (0 h) and after the meal (1-4 h) for analysis. RESULTS - Baseline endotoxin was significantly higher in the type 2 diabetic and IGT subjects than in NOC subjects, with baseline circulating endotoxin levels 60.6% higher in type 2 diabetic subjects than in NOC subjects (P <0.05). Ingestion of a high-fat meal led to a significant rise in endotoxin levels in type 2 diabetic, IGT, and obese subjects over the 4-h time period (P <0.05). These findings also showed that, at 4 h after ameal, type 2 diabetic subjects had higher circulating endotoxin levels (125.4%↑) than NOC subjects (P <0.05). CONCLUSIONS - These studies have highlighted that exposure to a high-fat meal elevates circulating endotoxin irrespective of metabolic state, as early as 1 h after a meal. However, this increase is substantial in IGT and type 2 diabetic subjects, suggesting that metabolic endotoxinemia is exacerbated after high fat intake. In conclusion, our data suggest that, in a compromised metabolic state such as type 2 diabetes, a continual snacking routine will cumulatively promote their condition more rapidly than in other individuals because of the greater exposure to endotoxin.

Original languageEnglish
Pages (from-to)375-382
Number of pages8
JournalDiabetes Care
Volume35
Issue number2
DOIs
Publication statusPublished - Feb 2012

    Fingerprint

ASJC Scopus subject areas

  • Internal Medicine
  • Endocrinology, Diabetes and Metabolism
  • Advanced and Specialised Nursing

Cite this

Harte, A. L., Varma, M. C., Tripathi, G., Mcgee, K. C., Al-Daghri, N. M., Al-Attas, O. S., Sabico, S., O'Hare, J. P., Ceriello, A., Saravanan, P., Kumar, S., & Mcternan, P. G. (2012). High fat intake leads to acute postprandial exposure to circulating endotoxin in type 2 diabetic subjects. Diabetes Care, 35(2), 375-382. https://doi.org/10.2337/dc11-1593