anthracene/atrophy

Vascular changes at various stages of growth of 7,12-dimethylbenz(alpha)anthracene (DMBA)-induced mammary adenocarcinomas in 22 female Sprague-Dawley rats were investigated using histology, immunohistochemistry and scanning electron microscopy (SEM) of corrosion casts. In the early stage of tumour

Anthracene, among the 16 US EPA polycyclic aromatic hydrocarbons (PAHs), is a typical low molecular weight environmental contaminant, which gains concern on its biodegradation under hypersaline condition. In this study, an anthracene-degrading bacterial strain was isolated from highly saline

After a single feeding or intravenous injection of 7,12-dimethylbenz[a]anthracene, the testis of rat was severely and selectively damaged, whereas the ovary of sisters was spared from injury. After many weeks, complete recovery of the testis ensued. The destructive effect of 7,12-DMBA on testis was

A cytochrome P450-like gene, tentatively named P450CMEF, was amplified by a mixed oligonucleotide-primed amplification of cDNA from C3H mouse embryo fibroblast cells, designated 10T1/2, that had been treated with 7,12-dimethylbenz[a]anthracene (DMBA) or benz[a]anthracene (BA). A set of

Invariably in every normal rat a single dose of 7, 12-dimethylbenz(a)anthracene, by mouth or injected in a vein, was found to cause apoplexy and massive necrosis in the inner zones of the adrenal cortex; the zona glomerulosa, the adrenal medulla, and a small region of cortex adjacent to the great

Large doses of 7,12-dimethylbenz[a]anthracene (7,12-DMBA) caused the death of rats within 1 day. A small amount of any of 5 polynuclear aromatic hydrocarbons or of an aromatic amine given before the highly toxic dose of 7,12-DMBA resulted in survival for more than 2 months and the specific atrophy

Sequential morphological changes occurring after brief carcinogen exposures of heterotopic tracheal transplants in rats were semiquantitatively studied. Tracheas were exposed to 7,12-dimethylbenz(a)anthracene for 1, 2, or 4 weeks, during which time means of 138, 152, and 160 microgram

Postpartum Wistar inbred rats (weaned on the 9th puerperal day) were injected intraductally in one mammary gland with 7,12-dimethylbenze (a) anthracene (DMBA) to selectively induce ductal carcinoma. The incidence of ductal hyperplasia increased with time until it peaked at 7 weeks (12/13 animals)

Anthracene-PMDA single crystals display at 2K about 70 meV below a well-known intrinsic charge-transfer exciton three narrow absorption lines, which are attributed to CT excitons bound to defects of a few 10(-5) concentration. All excitons respond very sensitively to electric fields along the

We previously reported that a neonatal administration of diethylstilbestrol or 17beta-estradiol affected the mammary carcinogenesis induced by 7,12-dimethylbenz[a]anthracene (DMBA) in rats. The aim of this present study was to investigate the effects of 4-n-octylphenol (OP), a weak estrogenic

Human ovarian cancer is predominantly of epithelial cell origin (>90% of malignant tumors) and most often presents at an advanced stage with poor prognosis. Most animal models of ovarian carcinoma yield thecal/granulosa cell tumors, rather than adenocarcinomas. Induction of adenocarcinoma in 10-45%

Gestational exposure of ICR mice to the environmental contaminant 7,12-dimethylbenz[a]anthracene (DMBA) was used (i) to study the developmental immunotoxicity of this chemical agent and (ii) to evaluate potential hematopoietic cellular targets in a sensitive developmental model which may be involved

We apply the ab initio molecular orbital (MO)-configuration interaction (CI) based quantum master equation (MOQME) method to the investigation of ultrafast exciton dynamics in an anthracene dimer modeled after anthracenophane, which is experimentally found to exhibit an oscillatory signal of

The excited state dynamics of anthracene-9,10-endoperoxide is investigated using quantum wavepacket dynamics. APO is an aromatic endoperoxide which, upon excitation to S(1), shows a cleavage of the oxygen-oxygen bond, leading to rearrangement products. It was shown that the dynamics of the O-O

The effect of isoproterenol (IPR) (20 mg/kg, twice per wk) on mammary gland tumors induced by N-nitroso-N-methylurea (NMU) (40 or 77 mg/kg, iv) was studied. Within 18 weeks 50--60% of the noninbred female Sprague-Dawley rats that received a single injection of NMU developed carcinomas of the mammary