Expression of p53 following Nigella sativa Oil treatment in DMBA-induced :hamster buccal pouch carcinogenesis
Suez Canal University Medical Journal. 2008; 11 (1): 81-88
Dans Anglais
| IMEMR
| ID: emr-90493
ABSTRACT
This study was designed to evaluate the possible role of Nigella sativa L. [NS] oil, as chemopreventive agent against DMBA- induced hamster buccal pouch [HBP] carcinogenesis. This study was carried-out on eighty-five male golden Syrian hamsters divided into nine main groups. In animals of DMBA-treated groups the left buccal pouches were painted with 0.5% DMBA, 3 times/week. Animals of NS-treated groups, were given 5 mgs/day of NS oil orally. Other groups were given both NS and DMBA at the same time, 3 times/week for 6 weeks. The animals were sacrificed by inhalation of high dose of ether. Both buccal pouches were surgically excised fixed in 10% neutral buffered formaline, and processed for H and E and p53 immunohistochemical stains. Topical application of DMBA in HBP, produced different grades of epithelial dysplasia, and over-expression of mutant p53. Administration of NS oil, inhibited the development of advanced dysplastic changes, and decreased expression of mutant p53. These findings suggest that NS oil is a potential retarding agent of DMBA-induced HBP carcinogenesis through down-regulating mutant p53 expression
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Indice:
Méditerranée orientale
Sujet Principal:
Huiles végétales
/
Tumeurs de la bouche
/
Cancérogènes
/
Gènes p53
/
Cricetinae
/
Agents protecteurs
/
Modèles animaux
/
7,12-Diméthyl-benzo[a]anthracène
/
Anthracènes
/
Muqueuse de la bouche
Limites du sujet:
Animaux
langue:
Anglais
Texte intégral:
Suez Canal Univ. Med. J.
Année:
2008
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