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Eur J Clin Invest. 1995 Aug;25(8):584-9.

Microdialysis assessment of adipose tissue metabolism in post-absorptive obese NIDDM subjects.

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Lundberg Laboratory for Diabetes Research, Department of Internal Medicine, Gothenburg University, Sahlgrenska University Hospital, Sweden.


Lactate and glycerol turnover is enhanced in obesity and NIDDM. To evaluate the influence of NIDDM on subcutaneous adipose tissue metabolism microdialysis combined with 133Xe clearance and measurements in arterialized plasma were carried out using samples of subcutaneous abdominal fat from nine obese NIDDM subjects (glucose, 7.9 +/- 0.7 mmol L-1) (mean +/- SEM) and nine obese non-diabetic subjects (glucose, 4.9 +/- 0.1) matched for age, BMI and body fat. After an overnight fast arterialized plasma levels were 1145 +/- 110 vs. 876 +/- 59 mumol L-1 (P < 0.05) for lactate and 75 +/- 10 vs. 66 +/- 8 mumol L-1 for glycerol in the diabetic and control group, respectively. The corresponding abdominal subcutaneous interstitial lactate and glycerol concentrations were 1278 +/- 63 vs 1107 +/- 64 mumol L-1 and 314 +/- 28 vs. 311 +/- 17 mumol L-1, respectively. However, adipose tissue blood flow in the same region was lower in NIDDM subjects (1.5 +/- 0.2 vs 2.4 +/- 0.3 mL 100 g-1 min-1) (P < 0.05). Consequently, apparent subcutaneous lactate and glycerol release, estimated according to Fick, were not statistically different in the two groups (1.8 +/- 0.4 vs 2.4 +/- 0.8 and 2.1 +/- 0.4 vs 3.1 +/- 0.5 mumol kg-1 min-1 in NIDDM and control subjects, respectively). Thus, in the post-absorptive state apparent lactate and glycerol release by the abdominal subcutaneous tissue in obese NIDDM subjects was similar to that in a matched group of obese non-diabetic controls.(ABSTRACT TRUNCATED AT 250 WORDS).

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