PL EN


Preferencje help
Widoczny [Schowaj] Abstrakt
Liczba wyników
1996 | 05 | 4 |

Tytuł artykułu

Estradiol and progesterone release from biodegradable copolymer: effect on activity of microsomal mixed function oxidase system in rat liver

Warianty tytułu

Języki publikacji

EN

Abstrakty

EN
The cytochrome P-450 dependent monooxygenase system is responsible for metabolism of exo- and endogenous compounds. It is induced or inhibited by many factors, including hormones. The effects of hormones on this system depend on the dose, manner and route of administration. The aim of this study was to test a controlled long-acting system of estradiol-progesterone release from a biodegradable copolymer and to evaluate the influence of the copolymer alone, or the copolymer with estradiol or progesterone on the hepatic enzymatic system responsible for biotransformation of xenobiotics. We have shown that the copolymer slightly affects the activity of the cytrochrome P-450 - dependent mixed oxygenase system (MFO), but not the desaturase system. Estradiol and progesterone modified the MFO activity in a typical manner.

Wydawca

-

Rocznik

Tom

05

Numer

4

Opis fizyczny

p.33-36,fig.,ref.

Twórcy

autor
  • Silesian University School of Medicine, Katowice, Poland
autor
autor
autor
autor
autor

Bibliografia

  • YOLLES S.S., ELDRIDGE J.E., WOODLAND J.H.R. Sustained delivery of drugs from polymer drug mixtures. Polymer News, 1, pp. 9-15, 1971.
  • COWSAR D.R., TICE T.R. Poly(lactide-co-glycolide) microcapsules for controlled release of Steroids. Methods Enzymol., 112, 101-116, 1985.
  • VERT M. Polymers for temporary therapeutic applications. Angewandte Makromolek. Chemie, 166/167, 155-168, 1989.
  • BECK L.R., COWSAR D.R., LEWIS D.H., COSGROVE R.J ., RIDDLE C.T., LOWRY S.L., EPPERLY T. A new longacting injectable microcapsule system for the administration of progesterone. Am. J. Obstet. Gynecol., 31, 545 -551, 1979.
  • WISE D.L., ROSENKRANTZ M., GREGORY J.B., ESBER H.]. Long-term controlled delivery of levonorgestrel in rats by means of small biodegradable cylinders. J. Pharm. Pharmacol., 32, 399-403, 1980.
  • SHAN-YANG L., LOW-TONE H., HUEY-LAN C. Insulin controlled-release microcapsules to prolong the hypoglycemic effect in diabetic rats. Biomaterials, 16, 815-828, 1988.
  • HELLER J. Synthesis of biodegradable polymers for biomedical utilization initiation of polymerization. Eds. Bailey F.E., pp. 373-393, 1983.
  • LINHART R. Biodegradable polymers for controlled release of drug. Eds. CRC Press, pp. 54-97, 1985.
  • FOUTS J .R. Microsomal mixed-function oxidases in the fetal and newborn rabbit. in: Fetal Pharmacology, L.O. Boreus ed., Raven Press, New York, pp. 305-320, 1973.
  • PELKONEN O. Transplacental transfer of foreign compounds and their metabolism by the foetus. in: Progres in Drug Metabolism, J.W. Bridges, and L.F. Chasseaud eds., John Wiley and Sons, London, pp. 119-161, 1977.
  • PETERSEN J.A., PROUGH R.A. Cytrochrome P-450 reductase and cytochrome bs in cytochrome P-450 catalysis. in: Cytochrome P-450: Structure, Metabolism, and Biochemistry, P.R. Ortiz de Montellano ed., Plenum Press, New York, pp. 89-118, 1986.
  • HILAVICA P. On the function of cytochrome b5 in the cytochrome P-450 dependent oxygenase system. Arch. Biochem. Bopphys., 228, 600-608, 1984.
  • EBERHART D.C., PARKINSON A. Cytochrome P-450 IIIAl (P45op) requires cytochrome bs and phospholipid wirh unsaturated fatty acids. Arch. Biochem. Biophys., 291, 231-240, 1991.
  • DALLNER G. Isolation of rough and smooth microsomes general. Methods. Enzymol., 32, 191-215, 1974.
  • ESTABROOK R.W., WERRINGLOER J. The measurement of difference Spectra: application to the cytochromes of microsomes. Methods Enzymol., 52, 212-220, 1978.
  • HODGES T.K., LEONARD R.T. Purification of a plasma mmbrane-bound adenosine triphosphatase from plant roots. Methods Enzymol., 32, 392-406, 1974.
  • LOWRY O.H., ROSEBROUGH N.J., FARR A.L., RANDAL R.]. Protein measurement with the Folin phenol reagent. J. Biol. Chem., 193, 265-275, 1951.
  • DASMAHAPATRA A.K., LEE P.C. Down regulation of CYP 1A1 by glucocorticoids in trout hepatocytes in vitro. In Vitro Cell. Dev. Biol., 29A, 643-648, 1993.
  • SHARMA M.C., SHAPIRO B.H. Purification and characterization of constituent testosteron 2oc-hydeoxylase (cytochrome P4503a) from mouse liver. Archiv. Biochem. Biophys., 316, 478-484, 1995.
  • MORGAN E.T., MACGEOCH C., GUSTAFSSON J.-A. Sexual differentiation of cytochrome P-450 in rat liver. Mol. Pharmacol., 27, 471-479, 1985.
  • MORGAN E.T., MACGEOCH C., GUSTAFSSON J.-A. Hormonal and developmental regulation of expression on the hepatio microsomal Steroid lóoc-hydroxylase cytochrome P-450 apoprotein in the rat. J. Biol. Chem., 260, 11895-11989, 1985.
  • VIND C., DICH J., GRUNNET N. Regulation by growth hormone and glucocorticoid of testosterone metabolism in long-term cultures of hepatocytes from male and female rats. Biochem. Pharmacol., 44, 1523-1528, 1992.
  • MURRAY M., HORSFIELD B. l7B-Hydroxysteroid oxidoreductase activity: age-dependent profile in rat liver and kinetic properties of the hepatic microsomal enzyme in relation to cytochrome P-450-dependent steroid hydroxylation, J. Steroid Biochem. Mol. Biol., 36, 569-574, 1990.
  • KITANI K. Neurohumoral control of liver functions during aging. Gerontology, 34, 55 -63, 1988.
  • FUJITA S., KITAGAWA H., CHIBA M., SUZUKI T., KITANI K. Age- and sex-associated differences in the relative abundance of multiple species of cytochrome P-450 system. Biochem. Pharmacol., 34, 1861-1864, 1985.
  • KAMATAKI T., MAEDA K., SHIMADA M., KITANI K., NAGAI T., KATO R. Age-related alteration in the activities of drug-metabolizing enzymes and contents of sex-Specific P-450 in liver microsomes from male and female rats. J. Pharmacol. Exp. Then, 233, 222-228, 1985.
  • MALONY A.C., SCHMUCKER D.L., VESSEY D.S., WANG R.K. The effect of aging on the hepatic microsomal mixed function oxidase system of male and female monkeys. Hepatology, 6, 282-287, 1986.
  • SUTTER M.A., GIBSON G., WILLIAMSON L.S., STRONG R., PICKHAM K., RICHARDSON A. Comparison of the he-patic mixed function oxidase systems of young, adult and old non-human primates (Macaca nemestrina ). Biochem Pharmacol., 34, 2983-2987, 1985.
  • BANDIERA S., DWORSCHAK C. Effects of testosterone and estrogen on hepatic levels of cytochromes P-450 2C7 and P-450 2Cll in the rat. Arch. Biochem. Biophys., 296, 289-295, 1992.
  • DECKER C., SUGIYAMA K., UNDERWOOD M., CORREIA M.A. Inactivation of rat hepatic cytochrome P-450 by spironolactone. Biochem. Biophys. Res. Commun., 136, 1162-1169, 1986.
  • JANSSON I., MOLE J., SCHENKMAN J.B. Purification and characterization of a new form (RLM 2) of liver microsomal cytochrome P-450 from untreated rat. J. Biol. Chem., 260, 7084-7093, 1985.
  • SWINNEY D.C., RYAN D.B., THOMAS P.E., LEVIN W. Regioselective progesterone hydroxylation cytalyzed by eleven rat hepatic cytochrome P-450 isozymes. Biochemistry, 26, 7073-7083, 1987.

Typ dokumentu

Bibliografia

Identyfikatory

Identyfikator YADDA

bwmeta1.element.agro-article-2d60d976-196c-48f4-9a3f-b267772e4db2
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.