In vitro mononuclear cell production of tumour necrosis factor-α and weight loss

Alison M. Morris, Manny Noakes, Peter M. Clifton

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Objective: Elevated tumour necrosis factor-alpha (TNF-α) production in adipose tissue has been associated with obesity. We investigated whether mononuclear cell production of TNF-α decreased with weight loss in an obese population. Research methods and procedures: Seventeen obese patients with type 2 diabetes (BMI 32.5±0.9kg/m2) and 33 obese, non-diabetic controls (BMI 31.2±0.5kg/m2) underwent 12 weeks of 30% total energy restriction (6622±84KJ per day). Every 4 weeks, weight and blood pressure were measured and fasting venous blood was analysed for lipid, glucose and insulin concentrations. At the beginning and end of energy restriction, mononuclear cells were isolated from whole blood and TNF-α production measured by ELSIA. Results: TNF-α production was not associated with the degree of adiposity but was higher in diabetic subjects (P<0.04). There was a reduction after energy restriction (281±43 to 182±30pg/ml, P<0.05) however the presence of type 2 diabetes did not influence the magnitude of this change. Plasma glucose and insulin levels decreased after weight loss in all subjects and weak correlations were found with TNF-α concentrations (r=0.3, P<0.05). Conclusions: We conclude that maximal production of TNF-α from mononuclear cells decreases with energy restriction and is weakly associated with plasma glucose and insulin concentrations in obese patients.

Original languageEnglish
Pages (from-to)179-184
Number of pages6
JournalDiabetes Research and Clinical Practice
Volume63
Issue number3
DOIs
Publication statusPublished or Issued - Mar 2004

Keywords

  • Mononuclear cell
  • Obesity
  • TNF-α
  • Type 2 diabetes
  • Weight loss

ASJC Scopus subject areas

  • Internal Medicine
  • Endocrinology, Diabetes and Metabolism
  • Endocrinology

Cite this