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  • Title: Effect of exocrine pancreatic function on resting energy expenditure in cystic fibrosis.
    Author: Moudiou T, Galli-Tsinopoulou A, Nousia-Arvanitakis S.
    Journal: Acta Paediatr; 2007 Oct; 96(10):1521-5. PubMed ID: 17880419.
    Abstract:
    AIM: To prove the hypothesis that exocrine pancreatic function determines resting energy expenditure (REE) in cystic fibrosis (CF). METHOD: Thirty-eight CF individuals, 9-34 (19.98 +/- 1.0) years, were divided into three groups: Six pancreatic sufficient patients (PS; group A), 21 pancreatic insufficient patients (PI), whose pulmonary function was comparable to that of group A (group B1) and 11 PI patients, whose pulmonary function was significantly worse than that of group A (group B2). REE was estimated by indirect calorimetry. Predicted REE was based on Schofield equations. Measured REE was expressed as % of the predicted. BMI, BMI z-scores, serum albumin, cholesterol and triglycerides levels were related to REE. Results were expressed as mean +/- standard error. RESULTS: Groups B1 and B2 had significantly higher REE% (111.7 +/- 2.75% and 119.94 +/- 3.8, respectively) as opposed to group A (98.9 +/- 3.81%; p = 0.022 and 0.035, respectively) whose REE% was similar to that predicted. REE% between group B1 and B2 was not statistically significant. In groups A, B1 and B, mean FEV1% was 86.33 +/- 10.1%, 90.24 +/- 4.39%, 44.54 +/- 3.47%, respectively, mean BMI was 25.6 +/- 2.06, 19.48 +/- 0.64 and 20.09 +/- 8.8, respectively, BMI z-scores were 0.75 +/- 0.51, -0.52 +/- 0.24 and -1.07 +/- 0.37, respectively. Significant correlation was demonstrated between REE%, BMI z-scores and cholesterol levels in group A. CONCLUSION: Clinically stable CF patients, who had comparable pulmonary function, exhibited increased REE% only in the presence of exocrine pancreatic insufficiency. REE% strongly correlated with BMI z-scores in pancreatic sufficiency. These findings support the hypothesis that pancreatic rather than pulmonary function may determine nutritional status as well as REE in CF.
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