Abstract Title:

Oral Nigella sativa oil and thymoquinone administration ameliorates the effect of long-term cisplatin treatment on the enzymes of carbohydrate metabolism, brush border membrane, and antioxidant defense in rat intestine.

Abstract Source:

Naunyn Schmiedebergs Arch Pharmacol. 2018 Jan 4. Epub 2018 Jan 4. PMID: 29302711

Abstract Author(s):

Faaiza Shahid, Zeba Farooqui, Aijaz Ahmed Khan, Farah Khan

Article Affiliation:

Faaiza Shahid


We have previously shown that oral administration of Nigella sativa oil (NSO) ameliorates the deleterious gastrointestinal effects of cisplatin (CP), administered as a single dose. Since a typical clinical CP dosing regimen involves multiple cycles of CP administration in lower doses, in the present study we investigate the protective efficacy of NSO and its major bioactive constituent, thymoquinone (TQ), against multiple-dose CP treatment-induced deleterious biochemical and histological changes in rat intestine. Rats were divided into six groups, viz., control, CP, CP+NSO, CP+TQ, NSO, and TQ. Animals in CP+NSO and CP+TQ groups were pre-administered NSO (2 ml/kg bwt, orally) and TQ (1.5 mg/kg bwt, orally), respectively, daily for 14 days and were then treated with five repeated doses of CP (3 mg/kg bwt, i.p.), every fourth day for 20 days while still receiving NSO/TQ. CP treatment alone led to a significant decline in specific activities of brush border membrane (BBM) enzymes while NSO or TQ administration to CP-treated rats significantly prevented the decline in BBM enzyme activities in the isolated brush border membrane vesicles (BBMV) as well as in mucosal homogenates. Furthermore, both NSO and TQ administration markedly ameliorated CP-induced alterations on carbohydrate metabolism enzymes and the enzymatic and non-enzymatic parameters of antioxidant defense system in the intestinal mucosa. However, NSO appeared to be more efficacious than TQ in protecting against CP-induced gastrointestinal dysfunction. Histopathological findingscorroborated the biochemical results. Thus, NSO and TQ may prove clinically useful in amelioration of the intestinal toxicity associated with long-term CP chemotherapy.

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