Metabolic consequences of body size and body composition in hemodialysis patients View Full Text


Ontology type: schema:ScholarlyArticle      Open Access: True


Article Info

DATE

2006-11

AUTHORS

S R Sarkar, M K Kuhlmann, P Kotanko, F Zhu, S B Heymsfield, J Wang, I S Meisels, F A Gotch, G A Kaysen, N W Levin

ABSTRACT

Small body mass index is associated with increased mortality in chronic hemodialysis patients. The reasons for this observation are unclear but may be related to body composition. This study aimed to investigate the body composition in chronic hemodialysis patients. The difference between body mass and the sum of muscle, bone, subcutaneous, and visceral adipose tissue masses, measured by whole body magnetic resonance imaging, was defined as the high metabolic rate compartment representing the visceral mass. Protein catabolic rate was calculated from urea kinetics. Forty chronic hemodialysis patients (mean age 54.7 years; 87.5% African Americans; 45% females) were studied. High metabolic rate compartment expressed in percent of body weight was inversely related to body weight (r=-0.475; P=0.002) and body mass index (r=-0.530; P<0.001). In a multiple linear regression model, protein catabolic rate was significantly correlated only with high metabolic rate compartment (r=0.616; P<0.001). Assuming that protein catabolic rate in addition to protein intake reflects urea and uremic toxin generation, it follows that high metabolic rate compartment is the major compartment involved in their generation. Consequently, uremic toxin production rate may be relatively higher in patients with low body weight and low body mass index as compared to their heavier counterparts. The poorer survival observed in smaller dialysis patients may be related to these relative differences. More... »

PAGES

1832-1839

References to SciGraph publications

Identifiers

URI

http://scigraph.springernature.com/pub.10.1038/sj.ki.5001895

DOI

http://dx.doi.org/10.1038/sj.ki.5001895

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1009498744

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/17021607


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