anthracene/atrophy

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Microvascular growth of 7,12-dimethylbenz(alpha)anthracene-induced adenocarcinomas in rats: histology and scanning electron microscopy of resin casts.

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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

[Isolation, charcaterization of an anthracene degrading bacterium Martelella sp. AD-3 and cloning of dioxygenase gene].

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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

SELECTIVE DESTRUCTION IN TESTIS INDUCED BY 7,12-DIMETHYLBENZ [a] ANTHRACENE.

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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

Identification of a cytochrome P450 gene by reverse transcription--PCR using degenerate primers containing inosine.

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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

Selective adrenal necrosis and apoplexy induced by 7, 12-dimethylbenz(a)anthracene.

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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

AROMATIC-INDUCED PREVENTION OF FETAL TOXICITY OF 7,12-DIMETHYLBENZ(ALPHA)ANTHRACENE.

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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

Quantitative assessment of generalized epithelial changes in tracheal mucosa following exposure to 7,12-dimethylbenz(a)anthracene.

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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

Induction of ductal carcinomas by intraductal administration of 7,12-dimethylbenz(a)anthracene in Wistar rats.

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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)

Stark effect of intrinsic and extrinsic charge-transfer excitons in a linear donor-acceptor stack: anthracene-pyromellitic dianhydride.

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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

Effects of 4-n-octylphenol on the induction of mammary tumors induced by 7,12-dimethylbenz[a]anthracene in rats.

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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

Characterization of rat ovarian adenocarcinomas developed in response to direct instillation of 7,12-dimethylbenz[a]anthracene (DMBA) coated suture.

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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%

Alterations in murine fetal thymus and liver hematopoietic cell populations following developmental exposure to 7,12-dimethylbenz[a]anthracene.

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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

Theoretical study on exciton recurrence motion in anthracene dimer using the Ab initio MO-CI based quantum master equation approach.

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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

9D nonadiabatic quantum dynamics through a four-state conical intersection: investigating the homolysis of the O-O bond in anthracene-9,10-endoperoxide.

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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

Effects of isoproterenol on mammary gland tumors induced by N-nitroso-N-methylurea and salivary gland tumors induced by 7,12-dimethylbenz[a]anthracene.

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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

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