title: Differential effects of cooked beans and cooked lentils on protein metabolism in intestine and muscle in growing rats.
abstract: OBJECTIVE
  The effect of diets based on cooked beans or lentils on protein metabolism in intestines and muscles was studied in rats.
  
  
  METHODS
  The cooked seeds were used as the unique protein source in balanced diets (containing 229 and 190 g of crude protein per kg dry matter) fed to young growing rats for 20 days. Their effects were compared with those of the control casein diet in pair-fed rats. Protein synthesis rates in small and large intestines and in gastrocnemius and soleus muscles were determined in vivo, in a fed state, by the flooding dose method, using 13C-valine.
  
  
  RESULTS
  In the small and large intestine tissues of the legume fed groups, protein, RNA relative masses (mg.100 g BM(-1)) and protein synthesis rates (FSR and ASR) were higher than in the control rats (p < 0.05). In gastrocnemius and soleus muscles,protein and RNA contents (in mg) and protein synthesis rates were significantly (p < 0.05) lower in the legume-fed groups than in the control rats.
  
  
  CONCLUSIONS
  The chronic intake of cooked legumes increased protein synthesis rates in intestinal tissues and decreased them in muscles. This effect was greater for beans than for lentils in the large intestine and in gastrocnemius muscle.
authors.affiliation: Chair of Nutrition, Zootechnical Department, Biotechnical Faculty, University of Ljubljana, Domzale, Slovenia. tatjana.pirman@bfro.uni-lj.si
authors.forename: Tatjana
authors.initials: T
authors.lastname: Pirman
authors.forename: Etiennette
authors.initials: E
authors.lastname: Combe
authors.forename: Marie Claude
authors.initials: MC
authors.lastname: Ribeyre
authors.forename: Jacques
authors.initials: J
authors.lastname: Prugnaud
authors.forename: Jasna
authors.initials: J
authors.lastname: Stekar
authors.forename: Philippe
authors.initials: P
authors.lastname: Patureau Mirand
mesh_terms: D000818:Animals; D000831:Animals, Newborn / Q000254:growth & development; D002247:Carbon Isotopes; D003296:Cooking / Q000379:methods; D004044:Dietary Proteins / Q000008:administration & dosage* / Q000378:metabolism*; D007887:Fabaceae / Q000378:metabolism*; D007420:Intestine, Large / Q000378:metabolism; D007421:Intestine, Small / Q000378:metabolism; D027806:Lens Plant / Q000378:metabolism*; D008297:Male; D009124:Muscle Proteins / Q000096:biosynthesis / Q000378:metabolism; D018482:Muscle, Skeletal / Q000378:metabolism; D009928:Organ Specificity; D014176:Protein Biosynthesis / Q000187:drug effects*; D011897:Random Allocation; D051381:Rats; D017207:Rats, Sprague-Dawley
chemical_list: D002247:Carbon Isotopes; D004044:Dietary Proteins; D009124:Muscle Proteins