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Tolerance and efficacy of a new enteral formula specifically designed for elderly persons: an experimental study in the aged rat.

AbstractFor the first time, a formula was specifically designed for the nutritional support of tube-fed elderly patients (Elderly-Specific Formula [ESF], Nestlé, Switzerland). It was tested against a standard formula (Sondalis Iso [SI], Nestlé Clinical Nutrition, Marne la Vallée, France) in sixteen 22-month-old Sprague Dawley rats fed by total continuous enteral infusion for 7 days. Body weight, stool weight, and nitrogen balance were measured daily. After death, muscle weight, plasma levels of amino acids, tissue protein, and amino acid content were measured. The ESF curbed weight loss, improved cumulative nitrogen balance, and increased jejunum protein content. Plasma levels of threonine, leucine, and isoleucine and the sum of total amino acids were higher in ESF-fed than in SF-fed rats. Threonine and isoleucine content in the soleus and gastrocnemius were higher in ESF-fed rats than SI-fed ones. ESF improved intestinal transit. Thus, in old rats, the ESF favored nutritional status more than a standard formula.
AuthorsAgathe Raynaud-Simon, Mirjam Kuhn, Julie Moulis, Julie Marc, Luc Cynober, Cécile Loï (Affiliation: Geriatrics Department, Bichat University Hospital, Paris Cedex 18, France. agathe.raynaud-simon at bch.aphp.fr)
JournalThe journals of gerontology. Series A, Biological sciences and medical sciences (J Gerontol A Biol Sci Med Sci) Vol. 63 Issue 7 Pg. 669-77 (Jul 2008) ISSN: 1079-5006 [Print] United States
PMID18693220 (Publication Type: Journal Article)
Chemical References
  • Amino Acids
  • Blood Glucose
  • Serum Albumin
  • Insulin
  • Nitrogen
Topics
  • Aged
  • Amino Acids (metabolism)
  • Animals
  • Blood Glucose (analysis)
  • Enteral Nutrition
  • Food, Formulated (analysis)
  • Humans
  • Insulin (blood)
  • Jejunum (metabolism)
  • Liver (metabolism)
  • Male
  • Muscle, Skeletal (anatomy & histology, metabolism)
  • Nitrogen (metabolism)
  • Nutritional Support
  • Organ Size
  • Rats
  • Rats, Sprague-Dawley
  • Serum Albumin (analysis)
  • Weight Loss

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