Hepatic dysfunction induced by 7, 12-dimethylbenz(α)anthracene and its obviation with erucin using enzymatic and histological changes as indicators.
The toxicity induced by 7, 12-dimethylbenz(α)anthracene (DMBA) has been widely delineated by a number of researchers. This potent chemical damages many internal organs including liver, by inducing the production of reactive oxygen species, DNA-adduct formation and affecting the activities of phase I, II, antioxidant and serum enzymes. Glucosinolate hydrolytic products like isothiocyanates (ITCs) are well known for inhibiting the DNA-adduct formation and modulating phase I, II enzymes. Sulforaphane is ITC, currently under phase trials, is readily metabolized and inter-converted into erucin upon ingestion. We isolated erucin from Eruca sativa (Mill.) Thell. evaluated its hepatoprotective role in DMBA induced toxicity in male wistar rats. The rats were subjected to hepatic damage by five day regular intraperitoneal doses of DMBA. At the end of the protocol, the rats were euthanized, their blood was collected and livers were processed. The liver homogenate was analyzed for phase I (NADPH-cytochrome P450 reductase, NADH-cytochrome b5 reductase, cytochrome P450, cytochrome P420 and cytochrome b5), phase II (DT diaphorase, glutathione-S-transferase and γ-glutamyl transpeptidase) and antioxidant enzymes (superoxide dismutase, catalase, guaiacol peroxidise, ascorbate peroxidise, glutathione reductase and lactate dehydrogenase). The level of thiobarbituric acid reactive substances, lipid hydroperoxides, conjugated dienes and reduced glutathione in the liver homogenate was also analyzed. The serum was also analyzed for markers indicating hepatic damage (alkaline phosphatase, serum glutamic oxaloacetic transaminase, serum glutamic pyruvic transaminase, direct bilirubin and total bilirubin). Erucin provided significant protection against DMBA induced damage by modulating the phase I, II and antioxidant enzymes. The histological evaluation of liver tissue was also conducted, which showed the hepatoprotective role of erucin.
Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, Punjab, India.
Rohit
R
Arora
Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, Punjab, India.
Sakshi
S
Bhushan
Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, Punjab, India.
Rakesh
R
Kumar
Sri Guru Ram Das Institute of Medical Sciences and Research, Amritsar, Punjab, India.
Rahul
R
Mannan
Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, Punjab, India.
Pardeep
P
Kaur
Department of Pharmaceutical Sciences, Guru Nanak Dev University, Amritsar, Punjab, India.
Amrit Pal
AP
Singh
Natural Plant Products Division, CSIR-Institute of Himalayan Bioresource and Technology, Palampur, Himachal Pradesh, India.
Bikram
B
Singh
Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, Punjab, India.
Adarsh P
AP
Vig
Natural Plant Products Division, CSIR-Institute of Himalayan Bioresource and Technology, Palampur, Himachal Pradesh, India.
Deepika
D
Sharma
Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, Punjab, India.
Saroj
S
Arora
D015127:9,10-Dimethyl-1,2-benzanthracene; D000818:Animals; D002374:Catalase / Q000378:metabolism; D056486:Chemical and Drug Induced Liver Injury / Q000188:drug therapy* / Q000378:metabolism / Q000473:pathology; D005980:Glutathione Reductase / Q000378:metabolism; D008099:Liver / Q000187:drug effects* / Q000378:metabolism / Q000473:pathology; D008297:Male; D018384:Oxidative Stress / Q000187:drug effects*; D010936:Plant Extracts / Q000494:pharmacology / Q000627:therapeutic use*; D051381:Rats; D017208:Rats, Wistar; D013440:Sulfides / Q000494:pharmacology / Q000627:therapeutic use*; D013482:Superoxide Dismutase / Q000378:metabolism; D013861:Thiocyanates / Q000494:pharmacology / Q000627:therapeutic use*
D010936:Plant Extracts; D013440:Sulfides; D013861:Thiocyanates; D015127:9,10-Dimethyl-1,2-benzanthracene; C073539:erucin; D002374:Catalase; D013482:Superoxide Dismutase; D005980:Glutathione Reductase