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CYP1B1 determines susceptibility to low doses of 7,12-dimethylbenz[a]anthracene-induced ovarian cancers in mice: correlation of CYP1B1-mediated DNA adducts with carcinogenicity.

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We showed previously that CYP1B1-null mice developed 10 times less lymphomas than wild-type mice after receiving 7,12-dimethylbenz[a]anthracene (DMBA). In this study a 10-fold lower dose was applied to differentiate between toxicity induced lymphomas (200 micro g/mouse/day) and tumor initiation (20

Therapeutic effect of paclitaxel and propolis on lipid peroxidation and antioxidant system in 7,12 dimethyl benz(a)anthracene-induced breast cancer in female Sprague Dawley rats.

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Breast cancer is one of the most common cancers in women of developed and developing countries. The optimum management of which requires a multidisciplinary approach including the use of certain biochemical and molecular markers. The effect of propolis along with paclitaxel on 7,12 dimethyl

Protective effect of Operculina turpethum against 7,12-dimethyl benz(a)anthracene induced oxidative stress with reference to breast cancer in experimental rats.

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Reactive oxygen species (ROS) directly or indirectly involves in multistage process of carcinogenesis. Antioxidant activity of methanolic extract of Operculina turpethum stems (MEOT) on 7,12 dimethylbenz(a)anthracene (DMBA) induced breast cancer was investigated in female Sprague-Dawley rats.

Inhibition of 7,12-dimethylbenz[a]anthracene-induced mammary tumors and DNA adducts by garlic powder.

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The present studies determined the influence of dietary supplements of garlic powder (0, 1, 2 or 4%) on 7,12-dimethylbenz[a]anthracene (DMBA)-induced mammary tumors and on the in vivo occurrence of mammary DMBA-DNA adducts in rats. Diets were offered 2 weeks before and 2 weeks following DMBA

Inhibition of 7-bromomethylbenz[a]anthracene-promoted mouse skin tumor formation by retinoic acid and dexamethasone.

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Retinoic acid, a potent inhibitor of mouse skin tumor promotion by 12-O-tetradecanoylphorbol-13-acetate, fails to inhibit tumor formation by the complete carcinogen, 7, 12-dimethylbenz[a]anthracene (DMBA). To obtain further clues about the nature of the mechanism of the carcinogenic process as well

Studying skin tumourigenesis and progression in immunocompetent hairless SKH1-hr mice using chronic 7,12-dimethylbenz(a)anthracene topical applications to develop a useful experimental skin cancer model.

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Previous studies have established that 7,12-dimethylbenz(a)anthracene (DMBA) can initiate skin tumourigenesis in conventional furred mouse models by acting on hair follicle stem cells. However, further cancer progression depends on repeated applications of tumour promoter agents. This study

Dose-time response in mouse skin tumor induction by 7, 12-dimethylbenz[a]anthracene and 12-O-tetradecanoyl-phorbol-13-acetate.

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The question was addressed whether the dose-response relationship derived from a carcinogenicity study can be used for mechanistic interpretation and to what extent the shape of the curve is dependent on the duration of the bioassay and the time of analysis. The mouse skin tumor model was used. It

Expression of lactate and malate dehydrogenases in tumors induced by SV40 and 7,12-dimethylbenz(a)anthracene.

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Isozyme patterns of lactate and malate dehydrogenases were studied in tumors induced by SV40 and 7,12-dimethylbenz(a)anthracene and in established cultures of cells from these tumors. The expression of B polypeptide subunits of lactate dehydrogenase is suppressed similarly by both agents. This may

Rapid induction of mammary cancer by repeated subcutaneous injection of the trans-3,4-dihydrodiol of 7,12-dimethylbenz[a]anthracene in the female Sprague-Dawley rat.

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The oral administration of a single 20mg dose of 7,12-dimethylbenz[a]anthracene regularly and rapidly induces mammary cancer in 50 day-old Sprague-Dawley female rats [Experimental Leukemia and Mammary Cancer, 1979, p. 74]. Several mechanisms by which 7,12-dimethylbenz[a]anthracene induces mammary

[The detection of the chicken sarcoma virus D6 in a tumor induced by 7,12-dimethylbenz(a)anthracene].

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A tumor induced by 7.12-dimethylbenz (a) anthracene in the hen is described from which a virus was isolated and classified as C type of Rous sarcoma virus. The virus is described in brief. It does not belong to any known strain of Rous sarcoma virus.

[Mutational activation of H-ras and K-ras (Codon 12,61) genes in 7,12 dimethylbenz(a)anthracene induced rat ovarian tumors].

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We had studied the histogenesis and p21 expression in ovarian tumor induced by 7,12-dimethylbenz(a)anthracene (DMBA). The present study was done to elucidate point mutation of the ras gene in tumors. Cases with immunohistological p21 expression; 3 adenomas, 5 adenocarcinomas and 2 sarcomas were

[Immunohistochemical studies of ras oncogene product p21 in 7,12 dimethylbenz (a) anthracene-induced rat ovarian tumors].

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In the present study, ras oncogene product p21 was analyzed immunohistochemically in rat ovarian tumors induced by 7,12 dimethylbenz (a) anthracene (DMBA). 1) After 28-38 (average 35.6) weeks, the tumors -6 adenomas, 30 adenocarcinomas, 3 sarcomas, one mixed müllerian tumor and 2 epidermal

Induction of tumors in the Japanese house musk shrew, Suncus murinus (Insectivora), by dimethylbenz[a]anthracene.

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The carcinogenic effect of 7,12-dimethylbenz[a]anthracene (DMBA) was examined in the virgin female Japanese house musk shrew, Suncus murinus (family: Soricidae, order: Insectivora). Leukemia, musk gland tumors, pilosebaceous tumors and sarcomas were induced in the DMBA-treated shrews, whereas none

[Immunohistochemical studies of recessive oncogene p53 and N-myc oncogene expression in 7, 12 dimethylbenz (a) anthracene-induced rat ovarian tumors].

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In the present study, the expressions of p53 and N-myc gene were analyzed immunohistochemically in rat ovarian tumors induced by 7,12 dimethylbenz (a) anthracene (DMBA). 1) p53 could be seen in the nucleolei of tumor cells. The positive rates were: adenomas 17%, adenocarcinomas 37%, sarcomas 0%,

Inhibitory effects of superior cervical ganglionectomy on dimethylbenz(a)anthracene-induced mammary tumors in the rat.

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The role of the pineal in regulating the oncogenic processes was explored in Sprague-Dawley female rats by comparing incidence and growth of mammary tumors in animals subjected to superior cervical ganglionectomy (SCGx) or blinding and anosmia (BAs) with that of intact rats treated with

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