Cytochrome P-450 Reductase Activities in the Liver Microsomes of Diabetic Rats Induced With Some Chemical Solvents

نویسندگان

  • Y. SİLİĞ
  • Ö. ÇETİNKAYA
چکیده

In this work, it has been attempted to determine the alterations brought about in the enzyme activities by oral administering acetone, isopropanol and ethanol to chemically induced diabetic rats. The rats in whom diabetes was induced diabetic by 65 mg/kg streptozotocin (stz) were divided into four main groups as a stz alone (group I), stz + aceton (group II), stz + isopropanol (group III), stz + ethanol (group IV) respectively. The control group was given physiological saline. Then liver microsomal fractions were obtained both from the control and experimental groups of rats. The enzyme activities were determined by using Strobel’s method.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Immunochemical detection and quantitation of microsomal cytochrome P-450 and reduced nicotinamide adenine dinucleotide phosphate:cytochrome P-450 reductase in the rat ventral prostate.

Treatment with beta-naphthoflavone (BNF) was found to induce 7-ethoxyresorufin O-deethylase and aryl hydrocarbon hydroxylase activities about 500-fold in the microsomal fraction of the rat ventral prostate but had no effect on aminopyrine N-demethylase or reduced nicotinamide adenine dinucleotide phosphate:cytochrome c reductase activities. Phenobarbital (PB) treatment did not alter any of thes...

متن کامل

Contributions of two inducible forms of cytochrome P-450 in rat liver microsomes to the metabolic activation of various chemical carcinogens.

Using the liver 9000 x g supernatant fraction of uninduced rats and monospecific antibodies against microsomal reduced nicotinamide adenine dinucleotide phosphate-cytochrome P450 reductase and two inducible forms of cytochrome P-450, PB-P-450 (major cytochrome P-450 component of the liver microsomes of phenobarbital-treated rats) and MC-P-448 (major cytochrome P-450 component of the liver micro...

متن کامل

Participation of cytochrome P-450 in reductive metabolism of 1-nitropyrene by rat liver microsomes.

Reductive metabolism of carcinogenic 1-nitropyrene by rat liver microsomes and reconstituted cytochrome P-450 systems was investigated. Under the nitrogen atmosphere, 1-aminopyrene was the only detected metabolite of 1-nitropyrene. The reductase activity in liver 105,000 X g supernatant fraction was ascribed to DT-diaphorase, aldehyde oxidase, and other unknown enzyme(s) from the results of cof...

متن کامل

Characterization of a Rat Lung Microsomal Fraction Obtained by Sepharose 2B UItrafiitration

A new procedure for obtaining rat lung microsomes essentially free of interfering hemoproteins has been developed. The method includes Sepharose 2B column chromatography of the 12,000 • g supernatant of lung homogehates, followed by ultracentrifugation of the material eluted in the void volume. Microsomes isolated in this manner contain specific levels of cytochromes bs and P-450 and of NADPH-c...

متن کامل

Multiplicity of cytochrome P-450 hemoproteins in rat liver microsomes. Preparation and specificity of an antibody to the hemoprotein induced by phenobarbital.

Rat liver microsomes have previously been shown to contain hemoproteins having molecular weights of 53,000, 50,000, and 45,000. The 45,000-dalton hemoprotein, which is induced in rat liver microsomes by pretreatment of animals with phenobarbital, is resistant to proteolysis by trypsin. This characteristic was used to purify it from the other microsomal hemoproteins. In the procedure used, a sod...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2000