Twenty-four-hour energy and nutrient balance in weight stable postobese patients after biliopancreatic diversion

Geltrude Mingrone, Andrea De Gaetano, Marco Castagneto, Pa Tataranni, Ca Raguso, Rm Tacchino, Av Greco

Risultato della ricerca: Contributo in rivistaArticolo in rivista

36 Citazioni (Scopus)


To better understand the long-term weight stability of postobese patients who underwent biliopancreatic diversion (BPD), we studied 24-h energy and nutrient balance in eight women at least 3 yr after surgery (PO) and compared the results to those obtained in eight normal never-obese control women (C), matched by age and weight. Body composition was measured by dual-energy x-ray absorptiometry (DXA). All the patients were on an ad libitum diet; 24-h energy and nutrient intake were measured on the experimental day. Twenty-four-hour energy expenditure (EE) and 24-h nutrient oxidation rates were measured in a respiratory chamber, and energy and nutrient balances were calculated after correcting for 24-h fecal nutrient loss. No differences in body composition were found between PO and C. PO had a higher gross energy intake than C (10.6 +/- 3.4 vs. 8.0 +/- 2.2 MJ/d; p < 0.05); however, due to the higher energy fecal loss in PO as compared to C (2.4 +/- 1.3 vs. 0.09 +/- 0.01 MJ/day; p < 0.01), 24-h metabolizable energy intake (MEJ) was not different in the two groups. The energy fecal loss in the PO patients was mostly in the form of lipid. EE at 24 h was not different in PO as compared to C. Therefore energy balance, computed as the difference between 24-h MEI and 24-h EE, was similar in the two groups. Respiratory quotient was significantly higher in PO than in C (1.00 +/- 0.08 vs. 0.83 +/- 0.03; p < 0.01). Carbohydrate (-135 +/- 37 g/d in PO vs. 63 +/- 23 g/d in C; p < 0.001), and lipid (48 +/- 14 g/d in PO vs. -23 +/- 6 g/d in C; p < 0.001) balances were different in the two groups. We conclude that chronic lipid malabsorption was the main metabolic abnormality explaining the achievement of energy balance in postobese subjects after biliopancreatic diversion. A chronic reduction of lipid absorption seems to play a key role in the long-term weight stability of this group of postobese subjects.
Lingua originaleEnglish
pagine (da-a)239-244
Numero di pagine6
Stato di pubblicazionePubblicato - 1996


  • Adult
  • Biliopancreatic Diversion
  • Body Composition
  • Body Weight
  • Calorimetry, Indirect
  • Case-Control Studies
  • Eating
  • Energy Metabolism
  • Female
  • Humans
  • Intestinal Absorption
  • Lipid Metabolism
  • Obesity, Morbid


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