title: Lower carnitine plasma values from malnutrition cancer patients.
abstract: BACKGROUND
  Understanding the consequences of cancer for energy metabolism is required in order to define strategies that both prevent and treat malnutrition. Carnitine is essential for lipid energy metabolism. The objective of this study was to assess presurgical plasma carnitine levels in cancer patients and their association with dietary intake, anthropometry, bioelectrical impedance, indirect calorimetry, plasma amino acid levels, and urinary carnitine and nitrogen values.
  
  
  METHODS
  This was a prospective study in which two groups were randomly selected: one consisting of esophageal and gastric cancer patients (n = 24) and the other of healthy volunteers (control group, n = 12).
  
  
  RESULTS
  Average plasma and urinary carnitine values ranged from 60 to 80 μM and 78 to 124 μM, respectively, in both groups, with no significant difference between them. Moreover, methionine and lysine levels, as well as resting energy expenditure, did not differ between cancer patients and controls. Plasma free carnitine levels, however, were significantly lower in cancer patients, 80 % (p < 0.05) of whom had deficient urinary carnitine excretion, insufficient dietary protein intake, and low body fat reserves.
  
  
  CONCLUSIONS
  Although cancer patients had carnitine deficiency and lower carnitine stores, these did not affect resting energy expenditure, total food intake, or plasma lysine and methionine levels.
authors.affiliation: Department of Nutrition, Federal University of Health Sciences of Porto Alegre, Porto Alegre, Brazil. estelar@ufcspa.edu.br
authors.forename: Estela Iraci
authors.initials: EI
authors.lastname: Rabito
authors.forename: Izabel Arruda
authors.initials: IA
authors.lastname: Leme
authors.forename: Rafael
authors.initials: R
authors.lastname: Demenice
authors.forename: Guilherme Vannucchi
authors.initials: GV
authors.lastname: Portari
authors.forename: Alceu Afonso
authors.initials: AA
authors.lastname: Jordão
authors.forename: José Sebastião
authors.initials: JS
authors.lastname: dos Santos
authors.forename: Júlio Sérgio
authors.initials: JS
authors.lastname: Marchini
mesh_terms: D000293:Adolescent; D000328:Adult; D015415:Biomarkers / Q000097:blood*; D009202:Cardiomyopathies / Q000097:blood* / Q000209:etiology / Q000473:pathology; D002331:Carnitine / Q000097:blood* / Q000172:deficiency*; D016022:Case-Control Studies; D005260:Female; D005500:Follow-Up Studies; D064368:Healthy Volunteers; D006801:Humans; D022124:Hyperammonemia / Q000097:blood* / Q000209:etiology / Q000473:pathology; D008297:Male; D044342:Malnutrition / Q000097:blood* / Q000209:etiology / Q000473:pathology; D008875:Middle Aged; D009135:Muscular Diseases / Q000097:blood* / Q000209:etiology / Q000473:pathology; D009369:Neoplasms / Q000097:blood* / Q000150:complications / Q000473:pathology; D011379:Prognosis; D011446:Prospective Studies; D055815:Young Adult
chemical_list: D015415:Biomarkers; D002331:Carnitine