Objective: Some species of Astragalus are used for the treatment of various types of cancer. The present study was designed to evaluate the anticancer potential of Astragalus ovinus extract (AOE) against DMBA-induced breast carcinoma in rats. Materials and Methods: The anti-tumor and antioxidant effects of AOE were evaluated against DMBA...

Endostatin, a Mr 20,000 fragment of collagen XVIII, potently inhibits the growth of experimental tumors implanted in mice. Here we report the cloning, expression, and antitumor activity of the rat form of endostatin. When tested on breast carcinomas arising in female virgin rats after intragastric administration of 9,10-dimethyl-1,2-benzanthracene (DMBA), endostatin induced significant inhibiti...

The carcinogens 9,10-dime thy 1-1,2-benzanthracene, 20-methylcholanthrene, 3,4benzpyrene, 1,2,5,6-dibenzanthracene, 1,2-benzanthracene, and 2-anthramine have been tested topically in the Syrian golden hamster. The mouse skin tumor-promoting agents, croton oil and polyoxyethylene sorbitan monostearate (Tween 60), have been tested on hamster skin following a single applica tion of 9,10-dimethyl-l...

The dose of carcinogen applied to the skin is one of the most important factors determining the ultimate tumor incidence (9, 10). However, the experiment of Calcutt and Powell (3) demonstrated that the effective dose of the carcinogen may be considerably lower than that measured onto the skin. Using fluorimetric methods and a single application of 3 mg. of benzpyrene (0.05 ml. of a 6 per cent s...

The present study was aimed to evaluate the protective effects of Hydroethanolic Murraya koenigii leaves extract (HEMKLE) against DMBA/TPA-induced angiogenesis, hepatotoxicity and renal toxicity during skin carcinogenesis in mice. For study, male LACA mice were divided into four groups: Group I (C), II (DMBA/TPA), III (HEMKLE), IV (HEMKLE+DMBA/TPA). 7, 12-dimethylbenz(a) anthracene (DMBA), 12-O...

Objective- Breast cancer is one of the most serious problems in oncology. Alkaloids pyrrolizidine are widely found in nature and exhibited versatile biological activities. The aim of the present study was to assess anti-tumor activity of methyl 1,3-dioxo-1,1',2',3,5',6',7',7a'-octahydrospiro[indene-2,3'-pyrrolizidine]-2'-carboxylate (6) on 7,12 dimethylbenz(a) anthracene (DMBA)-induced mammary ...

in this study,14 female sprague-dawley rats 55 days old were randomly divided into two control and experimental groups.2ml of 7,12-dimethylbenz{a} anthracene (DMBA) solution(20 mg of DMBA dissolved in 2 ml of corn oil) and 2 ml corn oil was eaten to each animal of test and control group respectively.tumor development was examined by milk line palpation once every week.during 3-5 months followin...

BACKGROUND AND OBJECTIVES The development of 5-aminolevulinic acid (ALA)-induced tissue fluorescence is optimal 2-4 hours after ALA application. Goal of this work was to develop a means of accelerating oral topical ALA-induced tissue fluorescence. STUDY DESIGN/MATERIALS AND METHODS In 300 hamsters, DMBA (9,10 dimethyl-1,2-benzanthracene) cheek pouch carcinogenesis produced dysplasia in 3-5 we...

The role of dietary factors in inhibiting or delaying the development of non-melanoma skin cancer (NMSC) has been investigated for many years. Cardamom, which is a dietary phytoproduct, has been commonly used in cuisines for flavour and has numerous health benefits, such as improving digestion and stimulating metabolism and having antitumorigenic effects. We have investigated the efficacy of di...