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Dietary propylthiouracil and 17 beta-estradiol benzoate implant effects on liver carbohydrate and lipid metabolism in chicks. 1989

R Rosebrough, and J McMurtry, and N Steele
USDA-Agricultural Research Service, Beltsville Agricultural Research Center, MD 20705.

1. Forty-eight chicks (21 days old) were implanted (+/- 50 mg 17-beta estradiol; EBI) and fed diets containing +/- 0.1% propylthiouracil (PTU) for 7 days to determine the role of gonadal hormones in the regulation of energy metabolism in the hypothyroid chick. 2. In vitro lipogenesis (IVL) and glucose production (NGP) were measured in liver explants. 3. Liver glycogen (GLY) metabolism was studied in particulate fractions (50,000 x g) of liver. 4. Glycogen synthetase activity (GLYSYN) was assayed in the presence of glucose-6-phosphate (G-6P; 0, 0.15 and 10 mM) to determine activation states. 5. PTU and EBI increased (P less than 0.05) both GLY concentration and GLYSYN activity in chicks but, did not increase G-6P activity ratios or the in vitro activation of GLYSYN. 6. Both PTU and EBI increased (P less than 0.05) IVL and NGP. 7. Estradiol magnifies the effects of PTU in chicks suggesting an interaction between thyroid status and gonadal function.

UI MeSH Term Description Entries
D008099 Liver A large lobed glandular organ in the abdomen of vertebrates that is responsible for detoxification, metabolism, synthesis and storage of various substances. Livers
D008297 Male Males
D011441 Propylthiouracil A thiourea antithyroid agent. Propythiouracil inhibits the synthesis of thyroxine and inhibits the peripheral conversion of throxine to tri-iodothyronine. It is used in the treatment of hyperthyroidism. (From Martindale, The Extra Pharmacopeoia, 30th ed, p534) 6-Propyl-2-Thiouracil,6 Propyl 2 Thiouracil
D002645 Chickens Common name for the species Gallus gallus, the domestic fowl, in the family Phasianidae, order GALLIFORMES. It is descended from the red jungle fowl of SOUTHEAST ASIA. Gallus gallus,Gallus domesticus,Gallus gallus domesticus,Chicken
D004032 Diet Regular course of eating and drinking adopted by a person or animal. Diets
D004343 Drug Implants Small containers or pellets of a solid drug implanted in the body to achieve sustained release of the drug. Drug Implant,Drug Pellet,Pellets, Drug,Drug Pellets,Implant, Drug,Implants, Drug,Pellet, Drug
D004958 Estradiol The 17-beta-isomer of estradiol, an aromatized C18 steroid with hydroxyl group at 3-beta- and 17-beta-position. Estradiol-17-beta is the most potent form of mammalian estrogenic steroids. 17 beta-Estradiol,Estradiol-17 beta,Oestradiol,17 beta-Oestradiol,Aerodiol,Delestrogen,Estrace,Estraderm TTS,Estradiol Anhydrous,Estradiol Hemihydrate,Estradiol Hemihydrate, (17 alpha)-Isomer,Estradiol Monohydrate,Estradiol Valerate,Estradiol Valeriante,Estradiol, (+-)-Isomer,Estradiol, (-)-Isomer,Estradiol, (16 alpha,17 alpha)-Isomer,Estradiol, (16 alpha,17 beta)-Isomer,Estradiol, (17-alpha)-Isomer,Estradiol, (8 alpha,17 beta)-(+-)-Isomer,Estradiol, (8 alpha,17 beta)-Isomer,Estradiol, (9 beta,17 alpha)-Isomer,Estradiol, (9 beta,17 beta)-Isomer,Estradiol, Monosodium Salt,Estradiol, Sodium Salt,Estradiol-17 alpha,Estradiol-17beta,Ovocyclin,Progynon-Depot,Progynova,Vivelle,17 beta Estradiol,17 beta Oestradiol,Estradiol 17 alpha,Estradiol 17 beta,Estradiol 17beta,Progynon Depot
D005947 Glucose A primary source of energy for living organisms. It is naturally occurring and is found in fruits and other parts of plants in its free state. It is used therapeutically in fluid and nutrient replacement. Dextrose,Anhydrous Dextrose,D-Glucose,Glucose Monohydrate,Glucose, (DL)-Isomer,Glucose, (alpha-D)-Isomer,Glucose, (beta-D)-Isomer,D Glucose,Dextrose, Anhydrous,Monohydrate, Glucose
D006003 Glycogen
D006006 Glycogen Synthase An enzyme that catalyzes the transfer of D-glucose from UDPglucose into 1,4-alpha-D-glucosyl chains. EC 2.4.1.11. Glycogen (Starch) Synthase,Glycogen Synthetase,Glycogen Synthase I,Synthase D,Synthase I,UDP-Glucose Glycogen Glucosyl Transferase,Synthase, Glycogen,Synthetase, Glycogen,UDP Glucose Glycogen Glucosyl Transferase

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