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. 2014 May;164(5):1091-1098.e3.
doi: 10.1016/j.jpeds.2013.12.029. Epub 2014 Feb 5.

Effect of relative weight group change on nuclear magnetic resonance spectroscopy derived lipoprotein particle size and concentrations among adolescents

Russell Jago  1 , Kimberly L Drews  2 , James D Otvos  3 , Gary D Foster  4 , Marsha D Marcus  5 , John B Buse  6 , Michele Mietus-Snyder  7 , Steven M Willi  8 ; HEALTHY Study Group
Collaborators, Affiliations

Effect of relative weight group change on nuclear magnetic resonance spectroscopy derived lipoprotein particle size and concentrations among adolescents

Russell Jago et al. J Pediatr. 2014 May.

Abstract

Objective: To examine whether longitudinal changes in relative weight category (as indicated by change in body mass index [BMI] classification group) were associated with changes in nuclear magnetic resonance (NMR)-derived lipoprotein particles among US youth.

Study design: Secondary analysis of data from a clustered randomized controlled trial. BMI and fasting blood samples were obtained from 2069 participants at the start of the 6th grade and end of the 8th grade. BMI was categorized as normal weight, overweight, or obese at both time points. Lipoprotein particle profiles were measured with NMR spectroscopy at both time points. Regression models were used to examine changes in relative weight group and change in lipoprotein variables.

Results: A total of 38% of participants changed relative weight category (BMI group) during the 2.5-year study period. Low-density lipoprotein (LDL) cholesterol and non-high-density lipoprotein (HDL) cholesterol decreased almost universally, but more with improved BMI category. There were adverse effects on LDL size and total LDL particles, HDL size, and cholesterol for participants who remained obese or whose relative weight group worsened. Changes in relative category had no impact on HDL particles.

Conclusion: Improvement in relative weight group from 6th to 8th grade was associated with favorable changes in non-HDL cholesterol, very low-density lipoprotein size, LDL size, HDL size, and LDL particles but had no effect on HDL particles. Findings indicate that an improvement in relative weight group between 6th and 8th grade had an effect on NMR-derived particles sizes and concentrations among a large group of adolescents, which overrepresented low-income minorities.

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Conflict of interest statement

The other authors declare no conflicts of interest.

Figures

Figure 1
Figure 1
Changes (95% CI) in small LDL-P, HDL size, and LP-IR in boys and girls as a function of BMI Category Shifts from 6th Grade to 8th Grade * * Girls are denoted by circles in figures and boys by squares.
See this image and copyright information in PMC

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