title: Oleoyl-estrone metabolic effects in relation with caloric restriction in inbred Beta rats with spontaneous obesity and type 2 diabetes.
abstract: Spontaneously hypertriacylglycerolemic obese and diabetic inbred IIM Beta rats were treated with oleoylestrone for 10 days. Pair-feeding was performed to determine some oleoyl-estrone effects dependent on the caloric restriction it promotes. Twenty-five 200 day-old Beta males receiving a daily gavage of 0.2 ml sunflower oil were divided into the following groups: 1) daily dose of 10 nmol/g oleoyl-estrone; 2) pair-fed; 3) control. The variables measured were: whole body protein, water and lipid; retroperitoneal and epididymal fat depot weights; plasma urea, glucose, insulin, triacylglycerols and cholesterol. Biomass and food intake were assessed daily. Oleoyl-estrone and pair-fed groups expressed similar variations in body composition and significant body weight losses due to reduction in food intake. Oleoyl-estrone and pair-fed treatments significantly reduced retroperitoneal fat depot weights, but not epididymal ones. In oleoyl-estrone and pair-fed groups hyperglycemia decreased and insulinemia lowered significantly. Plasma normal total cholesterolemia and hypertriacylglycerolemia values typical of Beta rats decreased strongly compared to controls, though attaining significantly different values between oleoyl-estrone and pair-fed groups. Plasma total cholesterol appeared as more sensitive to caloric restriction than triacylglycerols through a specific oleoyl-estrone-mediated effect.
authors.affiliation: Facultad de Ciencias Médicas, Universidad Nacional de Rosario, Argentina.
authors.forename: Marta D
authors.initials: MD
authors.lastname: Posadas
authors.forename: María C
authors.initials: MC
authors.lastname: Olguín
authors.forename: María I
authors.initials: MI
authors.lastname: Zingale
authors.forename: Gilda
authors.initials: G
authors.lastname: Revelant
authors.forename: Verónica
authors.initials: V
authors.lastname: Labourdette
authors.forename: María del C
authors.initials: Mdel C
authors.lastname: Gayol
authors.forename: Susana
authors.initials: S
authors.lastname: Calderari
mesh_terms: D000818:Animals; D019440:Anti-Obesity Agents / Q000494:pharmacology* / Q000627:therapeutic use; D001835:Body Weight / Q000187:drug effects; D031204:Caloric Restriction; D002784:Cholesterol / Q000378:metabolism; D003924:Diabetes Mellitus, Type 2 / Q000188:drug therapy / Q000378:metabolism*; D004435:Eating; D004970:Estrone / Q000031:analogs & derivatives* / Q000494:pharmacology* / Q000627:therapeutic use; D008297:Male; D009765:Obesity / Q000188:drug therapy / Q000378:metabolism*; D009829:Oleic Acids / Q000494:pharmacology* / Q000627:therapeutic use; D051381:Rats; D011919:Rats, Inbred Strains; D014280:Triglycerides / Q000378:metabolism; D015431:Weight Loss / Q000187:drug effects
chemical_list: D019440:Anti-Obesity Agents; D009829:Oleic Acids; D014280:Triglycerides; D004970:Estrone; C108709:oleoyl-estrone; D002784:Cholesterol