Abstract:
BACKGROUND:Kinetic abnormalities of apolipoprotein B (apoB)-containing lipoproteins in noninsulin-dependent diabetes mellitus (NIDDM) remain poorly understood. To get further insight into these abnormalities we performed a stable isotope kinetic experiment comparing the metabolism of apoB-containing lipoproteins in moderately severe NIDDM patients and healthy control subjects. METHODS:The study was performed in the fed state. Subjects underwent a primed infusion of 0.7 mg kg(-1) of L-[1-(13)C]leucine followed by a 16-h constant infusion of 0.7 mg kg(-1) h(-1). [13C]Leucine enrichment in apoB was measured by gas chromatography/combustion/isotope ratio mass spectrometry. RESULTS:In NIDDM patients, we observed a 3.49- and 4.52-fold increase of very-low-density lipoprotein (VLDL) and intermediate-density lipoprotein (IDL) apoB plasma concentrations, respectively (P<0.01). VLDL apoB production was increased by 41% (P<0.05) and fractional catabolic rate towards IDL and low-density lipoprotein (LDL) was decreased by 61% (P<0.05). The increased IDL apoB plasma concentration was also related to a major catabolic defect (-78%; P<0.01). For most patients, plasma LDL apoB concentration was comparable to that of controls. Nevertheless, LDL apoB metabolism was impaired in NIDDM subjects, with both a decreased LDL catabolic rate (-28%; P<0.05) and a trend towards a diminished synthesis. CONCLUSION:NIDDM is associated with multiple apoB metabolism abnormalities that are potentially atherogenic. In addition to the increased number of circulating VLDL and IDL particles, the increased residence time observed on all apoB-containing lipoproteins may promote the development of atherosclerotic lesions, by potentiating their oxidizability.
journal_name
Eur J Clin Investjournal_title
European journal of clinical investigationauthors
Duvillard L,Pont F,Florentin E,Galland-Jos C,Gambert P,Vergès Bkeywords:
subject
Has Abstractpub_date
2000-08-01 00:00:00pages
685-94issue
8eissn
0014-2972issn
1365-2362pii
eci702journal_volume
30pub_type
杂志文章abstract:INTRODUCTION:Complement-mediated tubular injury may play an important role in the progression of renal diseases. C3d is a presumed marker of complement activation. Its precursor C3dg has been detected in the urine of patients with membranous nephropathy. However, little is known of the renal handling of C3d or its excr...
journal_title:European journal of clinical investigation
pub_type: 杂志文章
doi:10.1046/j.1365-2362.2003.01153.x
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journal_title:European journal of clinical investigation
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journal_title:European journal of clinical investigation
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journal_title:European journal of clinical investigation
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journal_title:European journal of clinical investigation
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journal_title:European journal of clinical investigation
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journal_title:European journal of clinical investigation
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journal_title:European journal of clinical investigation
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journal_title:European journal of clinical investigation
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abstract::In a retrospectively analyzed series of 441 patients operated for primary hyperparathyroidism (HPT), the prevalence of diabetes mellitus was 8.2%, which was three times higher than in the unselected age-matched population. Following parathyroid surgery, the need for antidiabetic treatment was unchanged. The insulin re...
journal_title:European journal of clinical investigation
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更新日期:1983-10-01 00:00:00
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doi:10.1046/j.1365-2362.1998.00294.x
更新日期:1998-05-01 00:00:00
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journal_title:European journal of clinical investigation
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更新日期:1979-10-01 00:00:00
abstract:BACKGROUND:We hypothesized the existence of different hormonal response patterns to repeated lower body negative pressure (LBNP) and head-up tilt (HUT) in healthy males. We compared hormonal, cardiovascular and plasma volume changes from rest to stress within- and between-LBNP and HUT applications. Hormones investigate...
journal_title:European journal of clinical investigation
pub_type: 杂志文章
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更新日期:2011-08-01 00:00:00
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journal_title:European journal of clinical investigation
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abstract::The venous system plays a pivotal role in volume and blood pressure homeostasis. We tested the hypothesis that the visco-elastic properties of the peripheral venous system are reduced in patients with (incipient) diabetic nephropathy. Twenty-two normotensive patients with long-term insulin-dependent diabetes mellitus ...
journal_title:European journal of clinical investigation
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journal_title:European journal of clinical investigation
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journal_title:European journal of clinical investigation
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journal_title:European journal of clinical investigation
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journal_title:European journal of clinical investigation
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journal_title:European journal of clinical investigation
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journal_title:European journal of clinical investigation
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更新日期:2016-03-01 00:00:00
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