Prevention of N-nitrosodiethylamine-induced lung tumorigenesis by ellagic acid and quercetin in mice

Khanduja, Krishan Lal; Gandhi, Rajinder Kaur; Pathania, V.; Syal, Nidhi

doi:10.1016/s0278-6915(99)00021-6

Cited by 176 publications

(93 citation statements)

References 33 publications

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“…There is another type of antioxidants, flavonoids, which are richly found in fruits and vegetables. Flavonoids have many functions as antioxidants, scavengers of free radicals, chelating agents, and modifiers of various enzymatic and biological reactions (Khanduja et al 1999). EA is a naturally occurring plant polyphenol (Soong and Barlow 2004) that exhibits antioxidative properties both in vivo (Hassoun et al 1997) and in vitro (Seeram et al 2005).…”

Section: Discussionmentioning

confidence: 99%

Protective effects of ellagic acid in d-galactosamine-induced kidney damage in rats

et al. 2015

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D-Galactosamine (D-GalN), which is an established experimental toxin, primarily causes liver injury by the generation of free radicals and depletion of UTP nucleotides. D-GalN intoxication also induces renal dysfunction thus, renal failure is often associated with the end-stage of the liver damage. We have investigated both preventive and curative effects of ellagic acid (EA) in this study. EA treatment at a gavage dose of 20 mg/kg body weight was administered before and after intraperitoneal (i.p.) injection of D-GalN at a dose of 750 mg/kg. Tissue and blood samples of animals were collected for morphological and biochemical evaluations. Our study results suggest that EA treatment both prior to and after the toxin administration successfully altered the toxic effects on the rats. Moreover, pre-treatment of EA was more protective than post-treatment indicated by histopathological and biochemical values. In conclusion, EA treatment both before and after D-GalN intoxication could protect kidney tissues against D-GalN induced oxidative stress.

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Section: Discussionmentioning

confidence: 99%

Protective effects of ellagic acid in d-galactosamine-induced kidney damage in rats

et al. 2015

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“…Although quercetin has shown chemopreventive properties in some preclinical models of oral, cervical, lung, and colon carcinogenesis (5,(19)(20)(21), it was devoid of the ability to prevent adenoma development in the Apc Min mouse (39). Quercetin at dietary concentrations of 0.3% to 3% has even been shown to augment, rather than counteract, azoxymethane-induced formation of colonic aberrant crypts and adenocarcinomas in rodents (40,41).…”

Section: Discussionmentioning

confidence: 99%

“…Quercetin has shown cancer chemopreventive properties in rodent models of carcinogenesis of the colon, mouth, cervix, and lung (5,(19)(20)(21), and it has been subjected to a phase 1 clinical trial in cancer patients (22). Its des-hydroxy cogener fisetin (3′,4′,7-trihydroxyflavonol; for structures, see Fig.…”

Section: Introductionmentioning

confidence: 99%

Preclinical Colorectal Cancer Chemopreventive Efficacy and p53-Modulating Activity of 3′,4′,5′-Trimethoxyflavonol, a Quercetin Analogue

Howells

Britton

Mazzoletti

et al. 2010

Cancer Prevention Research

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Some naturally occurring flavonols, exemplified by quercetin, seem to possess experimental cancer chemopreventive efficacy. Modulation of p53 is a mechanism thought to contribute to their activity. The hypothesis was tested that a synthetic flavonol, 3′,4′,5′-trimethoxyflavonol (TMFol), can interfere with tumor development and p53 expression in two models of colorectal carcinogenesis, Apc Min mice and human-derived HCT116 adenocarcinoma-bearing nude mice. Mice received TMFol with their diet (0.2%) from weaning to week 16 in the case of Apc Min or from either day 7 before ("TMFol early") or day 7 after ("TMFol late") tumor inoculation in HCT116 mice. The ability of TMFol to affect tumor proliferation or apoptosis, as reflected by staining for Ki-67 or cleaved caspase-3, respectively, was studied in HCT116 tumors. TMFol tumor levels were measured by high-performance liquid chromatography. Consumption of TMFol reduced small intestinal adenoma burden in Apc Min mice by 47%, compared with control mice (P < 0.002). The TMFol early regimen approximately halved HCT116 tumor size (P < 0.05), decreased tumor proliferation, and increased apoptosis, whereas the TMFol late regimen had no significant effect when compared with controls. In tumor tissues from mice, in which TMFol reduced tumor development, p53 expression was increased 3-fold in Apc Min and 1.5-fold in HCT116 tumor-bearing mice (P = 0.02). TMFol increased p53 also in cells derived from these tumors. TMFol was detected in HCT116 tumors, but levels did not correlate with tumor burden. TMFol was not mutagenic in the Ames test. The results suggest that chemical modification of the flavonol structure may generate safe and efficacious cancer chemopreventive agents. Cancer Prev Res; 3(8); 929-39. ©2010 AACR.

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“…EA possesses a wide spectrum of pharmacological activities such as anticancer [20], antiallergic [21], antimalarial [22], antiwrinkle [23], antiglycative, anti-inflammatory [24], and antioxidant [25]. In fact, EA has been found to exhibit a potential scavenging action on superoxide anion and hydroxyl anion in vitro [26].…”

Section: Introductionmentioning

confidence: 99%

Quercetin and Ellagic Acid in Gastric Ulcer Prevention: An Integrated Scheme of the Potential Mechanisms of Action From in Vivo Study

Kotob

Sayed

Mohamed

et al. 2018

Asian J Pharm Clin Res

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Objective: The present study was initiated to describe the gastroprotective role of quercetin (Qu) and ellagic acid (EA) on aspirin-induced gastric ulcer (GU) in rats.Methods: Forty adult female albino rats of Wistar strain were distributed into: Control group, GU group, Omeprazole group, Qu group, and EA group. Gross examination, biochemical analyses including serum adrenocorticotropic hormone (ACTH), serotonin (ST), ferritin, heme oxygenase-1 (HO-1), interleukin-2 (IL-2), advanced glycosylation end products (AGEs), and fibronectin (FN) levels were estimated. Moreover, histopathological and histochemical examinations of stomach tissue samples were carried out.Results: Gross examination of gastric mucosa of rats in GU group revealed hyperemia of the stomach mucosa. Furthermore, rats in GU group experienced a significant rise in serum ACTH, ferritin, HO-1, IL-2 and AGEs levels accompanied with significant drop in serum ST and FN levels versus control counterparts. Pre-treatment of GU group with Omeprazole, Qu or EA caused marked improvement in the measured biochemical parameters. Histopathological and histochemical examinations of stomach tissue samples documented the protective action of Omeprazole, Qu and EA with different degrees against GU caused by aspirin. Conclusion:As a conclusion to this study, we can state that both Qu and EA have gastroprotective effect against aspirin-induced GU in rat model. Of note, Qu showed superior impact than EA as an antiulcer agent in this study. The corresponding mechanisms are speculated to be associated with inhibiting stress-induced gastric lesion, attenuating the oxidative stress, iron chelation and blunting ferritin level, modulating inflammatory cascade, and promoting the healing process.

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Prevention of N-nitrosodiethylamine-induced lung tumorigenesis by ellagic acid and quercetin in mice

Cited by 176 publications

References 33 publications

Protective effects of ellagic acid in d-galactosamine-induced kidney damage in rats

Protective effects of ellagic acid in d-galactosamine-induced kidney damage in rats

Preclinical Colorectal Cancer Chemopreventive Efficacy and p53-Modulating Activity of 3′,4′,5′-Trimethoxyflavonol, a Quercetin Analogue

Quercetin and Ellagic Acid in Gastric Ulcer Prevention: An Integrated Scheme of the Potential Mechanisms of Action From in Vivo Study

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