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Abstract Title:

Antioxidant and antitumor efficacy of Luteolin, a dietary flavone on benzo(a)pyrene-induced experimental lung carcinogenesis.

Abstract Source:

Biomed Pharmacother. 2016 Jun 6 ;82:568-577. Epub 2016 Jun 6. PMID: 27470398

Abstract Author(s):

Eshvendar Reddy Kasala, Lakshmi Narendra Bodduluru, Chandana C Barua, Ranadeep Gogoi

Article Affiliation:

Eshvendar Reddy Kasala

Abstract:

The present study is designed to assess the antioxidant and antitumor potential of luteolin against benzo(a)pyrene [B(a)P]-induced lung carcinogenesis in Swiss albino mice. Here, we reported that oral administration of B(a)P (50mg/kg body weight) to mice resulted in raised lipid peroxides (LPO), lung specific tumor markers such as carcinoembryonic antigen (CEA) and neuron specific enolase (NSE) with concomitant decrease in the levels of both enzymatic antioxidants such as superoxide dismutase (SOD), catalase (CAT), glutathione reductase (GR), glutathione peroxidase (GPx) and glutathione-s-transferase (GST), and non-enzymatic antioxidants such as reduced glutathione (GSH), vitamin E and vitamin C. Luteolin treatment (15mg/kg body weight, p.o) significantly counteracted all these alterations and maintained cellular normalcy. Moreover, assessment of protein expression levels by western blot analysis revealed that luteolin treatment effectively negates B(a)P-induced upregulated expression of proliferating cell nuclear antigen (PCNA), cytochrome P450 1A1 (CYP1A1) and nuclear factor-kappa B (NF-κB). Furthermore, histopathology of lung tissue and immunohistochemistry of CYP1A1 were carried out to substantiate the anti- lung cancer effect of luteolin. Overall, these findings confirm the chemopreventive potential of luteolin against B(a)P induced lung carcinogenesis.

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