skin neoplasms/edema

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Defective global genome repair in XPC mice is associated with skin cancer susceptibility but not with sensitivity to UVB induced erythema and edema.

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It is generally presumed that xeroderma pigmentosum (XP) patients are extremely sensitive to developing UV erythema, and that they have a more than 1000-fold increased skin cancer risk. Recently established mouse models for XP can be employed to investigate the mechanism of these increased

Effects of polyphenols derived from fruit of Crataegus pinnatifida on cell transformation, dermal edema and skin tumor formation by phorbol ester application.

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The dried fruits of Crataegus pinnatifida have been used traditionally as oriental medicine and local soft drink material recently. Previously, we demonstrated that C. pinnatifida exhibited anti-oxidation and anti-inflammatory potential. To clarify the active components in anti-transformation and

Design, Development and Characterization of Topical Microemulsions of 5-Fluorouracil for the Treatment of Non Melanoma Skin Cancer and its Precursor Lesions.

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Treatment of non melanoma skin cancer and its precancerous skin lesions is associated with severe topical and systemic toxicity. So, it has become necessary to develop an efficient novel delivery system with less side effects and better patient compliance. Topical w/o microemulsion of 5-FU were

Deoxynivalenol induced mouse skin tumor initiation: Elucidation of molecular mechanisms in human HaCaT keratinocytes.

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Among food contaminants, mycotoxins are toxic to both human and animal health. Our prior studies suggest that Deoxynivalenol (DON), a mycotoxin, behaves as a tumor promoter by inducing edema, hyperplasia, ODC activity and activation of MAPK's in mouse skin. In this study, topical application of DON,

Evidence for a common genetic pathway controlling susceptibility to mouse skin tumor promotion by diverse classes of promoting agents.

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The present study has compared different mouse stocks and strains with known sensitivity to phorbol ester skin tumor promotion for their sensitivities to skin tumor promotion by a prototypic organic peroxide (benzoyl peroxide, BzPo) and anthrone (chrysarobin, Chr) tumor promoter. Following

Skin tumor promotion by argemone oil/alkaloid in mice: evidence for enhanced cell proliferation, ornithine decarboxylase, cyclooxygenase-2 and activation of MAPK/NF-kappaB pathway.

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Consumption of argemone oil (AO) contaminated edible oil causes "Epidemic Dropsy". Previously, we have shown that AO and isolated sanguinarine possess genotoxicity and skin tumor initiating activity. Here, we evaluate tumor-promoting potential of AO/sanguinarine alkaloid and investigate the

Inhibition of chrysarobin skin tumor promotion in SENCAR mice by antioxidants.

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The present study was designed to further investigate the role of reactive oxygen species in the mechanism of action of anthrone tumor promoters. To accomplish this, the effects of several antioxidants on the induction of epidermal ornithine decarboxylase (ODC) activity, epidermal hyperplasia, skin

Pro/antioxidant status in murine skin following topical exposure to cumene hydroperoxide throughout the ontogeny of skin cancer.

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Organic peroxides used in the chemical and pharmaceutical industries have a reputation for being potent skin tumor promoters and inducers of epidermal hyperplasia. Their ability to trigger free radical generation is critical for their carcinogenic properties. Short-term in vivo exposure of mouse

Mechanism of mouse skin tumor promotion by chrysarobin.

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The skin tumor-promoting ability of 1,8-dihydroxy-3-methyl-9-anthrone (chrysarobin) was compared with that of 12-O-tetradecanoylphorbol-13-acetate (TPA) and 1,8-dihydroxy-9-anthrone (anthralin) in SENCAR mice. Although dose-response comparisons indicated that chrysarobin was several orders of

Inhibition by lipoxygenase inhibitors of 7-bromomethylbenz[a]anthracene-caused epidermal ornithine decarboxylase induction and skin tumor promotion in mice.

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7-Bromomethylbenz[a]anthracene (BrMBA) has been shown to have a tumor-promoting action in mouse skin without an initial direct interaction with protein kinase C, which is believed to be a receptor for phorbol ester tumor promoters such as 12-O-tetradecanoylphorbol-13-acetate (TPA). An application of

IL-12 deficiency suppresses 12-O-tetradecanoylphorbol-13-acetate-induced skin tumor development in 7,12-dimethylbenz(a)anthracene-initiated mouse skin through inhibition of inflammation.

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Interleukin (IL)-12 deficiency exacerbates tumorigenesis in ultraviolet (UV) radiation-induced skin. Here, we assessed the effects of IL-12 deficiency on 12-O-tetradecanoylphorbol-13-acetate (TPA)-induced tumor promotion in 7,12-dimethylbenz(a)anthracene (DMBA)-initiated mouse skin. Using this

Assessing the risk of epidemic dropsy from black salve use.

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Epidemic dropsy is a potentially life-threatening condition resulting from the ingestion of argemone oil derived from the seeds of Argemone mexicana Linn. Exposure to argemone oil is usually inadvertent, arising from mustard cooking oil adulteration. Sanguinarine, an alkaloid present in argemone

Direct comparison of DNA damage, isomerization of urocanic acid and edema in the mouse produced by three commonly used artificial UV light sources.

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Exposure to sunlight can result in a number of harmful effects, including sunburn, erythema, premature aging of the skin, immune suppression and skin cancer. Studies designed to understand the underlying mechanisms often depend upon the use of artificial sources of UV radiation. Unfortunately,

Inhibition of ultraviolet-B radiation induced ornithine decarboxylase activity and edema formation by hydrolyzable and condensed tannins in mouse skin in vivo.

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Naturally occurring hydrolyzable (HT) and condensed (CT) tannins and their monomeric units were tested for their ability to inhibit the induction of epidermal ODC activity and the formation of skin edema by UVB, two responses that are linked to the hyperplastic and inflammatory components of skin

Relative susceptibilities of XPA knockout mice and their heterozygous and wild-type littermates to UVB-induced skin cancer.

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Although xeroderma pigmentosum (XP) patients are rare, carriers of XP genes (heterozygotes) are much more common. Whether such carriers have an increased skin cancer risk is unknown. Recently developed mouse models for XP have opened up the possibility of determining the skin cancer risk of

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