title: Effects of oral acute administration and subchronic feeding of several levels of D-psicose in rats.
abstract: The effects of oral acute administration and subchronic (34 d) feeding of several levels of D-psicose, a C3-epimer of D-fructose, were studied in rats. In the acute administration test, five groups of eight male Wistar rats (3 wk old) were orally given D-psicose in doses of 8, 11, 14, 17, and 20 g/kg. Three rats receiving 14 g/kg, three rats receiving 17 g/kg and eight rats receiving 20 g/kg of D-psicose died within 2 d after administration. The calculated LD50 values were 16.3 g/kg by the Behrens-Karber method and 15.8 g/kg by the Litchfield-Wilcoxon method. In the subcronic feeding test, eight groups of seven male Wistar rats (3 wk old) were fed diets containing 0 (control), 10, 20, 30, and 40% for 34 d. One rat fed 30% D-psicose diet and five rats fed 40% D-psicose diet died during the experimental period. Body weight gain, food intake and food efficiency were more extensively suppressed by the higher D-psicose diets. The weights of heart, spleen and abdominal adipose tissue were smaller in the order of dietary D-psicose concentration. Cecal weight increased with increasing D-psicose concentration in the diets. Cecal hypertrophy was observed in rats fed 10-40% D-psicose diets. These results suggest that D-psicose differs in nutritional characteristics from D-glucose or D-fructose. The feeding of diets extremely high in D-psicose seems to be harmful to the intestinal tract.
authors.affiliation: Faculty of Agriculture, Kagawa University, Ikenobe, Miki-cho, Kita-gun, Kagawa 761-0795, Japan. matsuo@ag.kagawa-u.ac.jp
authors.forename: Tatsuhiro
authors.initials: T
authors.lastname: Matsuo
authors.forename: Tomohiro
authors.initials: T
authors.lastname: Tanaka
authors.forename: Mineo
authors.initials: M
authors.lastname: Hashiguchi
authors.forename: Ken
authors.initials: K
authors.lastname: Izumori
authors.forename: Hiroo
authors.initials: H
authors.lastname: Suzuki
mesh_terms: D000284:Administration, Oral; D000818:Animals; D001786:Blood Glucose / Q000378:metabolism; D001835:Body Weight / Q000187:drug effects; D002432:Cecum / Q000187:drug effects; D003967:Diarrhea / Q000139:chemically induced; D004040:Dietary Carbohydrates / Q000378:metabolism; D004305:Dose-Response Relationship, Drug; D005632:Fructose / Q000008:administration & dosage / Q000633:toxicity*; D007928:Lethal Dose 50; D008099:Liver / Q000187:drug effects / Q000378:metabolism; D008297:Male; D009206:Myocardium / Q000378:metabolism / Q000473:pathology; D009929:Organ Size / Q000187:drug effects; D051381:Rats; D017208:Rats, Wistar; D016019:Survival Analysis; D014280:Triglycerides / Q000097:blood
chemical_list: D001786:Blood Glucose; D004040:Dietary Carbohydrates; D014280:Triglycerides; C003243:psicose; D005632:Fructose