Lipid peroxidation in the adrenal glands of male rats exposed to 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD).

نویسندگان

  • L L Bestervelt
  • D W Piper
  • J A Pitt
  • W N Piper
چکیده

This study was performed to determine whether TCDD (50 micrograms/kg; single oral dose) could induce adrenal microsomal lipid peroxidation, which might be correlated to decreased levels of cytochrome P-450 and 21-hydroxylase activity. The amount of malondialdehyde (MDA) formed was significantly higher than controls at days 1 through 5 following TCDD treatment. Microsomal cytochrome P-450 levels were depressed after lipid peroxidation at days 1, 3, and 5, and 21-hydroxylase activity decreased at day 5 after TCDD treatment. This study shows that TCDD stimulates adrenal microsomal lipid peroxidation which is associated with decreased cytochrome P-450 levels and 21-hydroxylase activity.

برای دانلود رایگان 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

Damage to erythrocytes caused by 2,3,7,8-tetrachloro-dibenzo-p-dioxin (in vitro).

The effects of the exposure of human erythrocytes to different concentrations of 2,3,7,8-tetrachlorodibenzo-p-dioxin were studied. Particular attention was paid to lipid peroxidation, haemoglobin oxidation, and changes in the activity of catalase and glutathione peroxidase. Human erythrocytes at a 5% haematocrit were incubated with 2,3,7,8-TCDD at concentrations of 0.2 ppm to 1.6 ppm (ng-microg...

متن کامل

Oral administration of hesperidin, a citrus flavonone, in rats counteracts the oxidative stress, the inflammatory cytokine production, and the hepatotoxicity induced by the ingestion of 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD).

The objective of the current study was to investigate the protective effects of hesperidin against oxidative stress, altered cytokines levels and histological changes in rats induced by 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD). Rats were divided randomly into four equal groups (Control, TCDD, hesperidin and TCDD+hesperidin). TCDD and hesperidin were given by gavage, dissolved in corn oil at d...

متن کامل

Effects of Perinatal 2,3,7,8-Tetrachlorodibenzo-P-Dioxin Exposure on Development of Taste Preference in Rat Offspring

2,3,7,8-Tetrachlorodibenzo-P-Dioxin (TCDD) is a highly toxic man-made chemical found ubiquitously in the environment. Maternal exposure to TCDD during pregnancy has been reported to induce deficits in higher brain functions of off-spring, such as working memory in a radial arm maze, operant responding in running wheels or two-lever chamber, and discrimination reversal learning [1-4]. We also re...

متن کامل

Effect of chitosan oligosaccharide on 2,3,7,8-tetrachlorodibenzo-p-dioxin-induced oxidative stress in mice.

The abilities of two types of chitosan oligosaccharides, chitosan oligosaccharide I (1-kDa<MW<3-kDa) and chitosan oligosaccharide II (3-kDa<MW<5-kDa), to prevent 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD)-induced oxidative stress were examined in ICR mice. Chitosan oligosaccharide I had no effect on TCDD-induced alterations in lipid peroxidation and glutathione S-transferase activity or liver w...

متن کامل

Effects of 2,3,7,8-tetrachlorodibenzo-p-dioxin upon hemostasis and hematologic function in the rat.

2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD) has been identified as a toxic contaminant of chlorophenols and related hydrocarbons that are widely used in agriculture and industry. It has been implicated in various diseases, including human cases of chloracne (1) and porphyria cutanea tarda (2) and in chick edema (3). Its teratogenicity has been documented in rats (4) and mice (5). Monkeys fed tox...

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

عنوان ژورنال:
  • Toxicology letters

دوره 70 2  شماره 

صفحات  -

تاریخ انتشار 1994