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keratosis/glutathione
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14 résultats
The expression of placental-type glutathione S-transferase (GST-pi) in human cutaneous carcinoma in situ, that is, actinic keratosis and Bowen's disease, compared with normal human skin.
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The expression of human placental type glutathione S-transferase (GST-pi) was investigated in human cutaneous carcinoma in situ, that is, actinic keratosis and Bowen's disease, and compared with that in normal skin, using Northern blot and immunohistochemical analysis. In Northern blot examination,
Polymorphism of glutathione S-transferases M1 and T1: susceptibility to solar keratoses in an Italian population.
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BACKGROUND
Polymorphisms of glutathione S-transferases (GSTs) are linked to skin cancer, but data on their association with solar keratosis (SK) are few and conflicting.
OBJECTIVE
To verify the possible association between the development of SK and the 'null' GSTM1 and/or T1
Glutathione S-Transferase Theta 1 / Mu 1 Null Genotype and Risk of Development of Actinic Keratosis in Pakistani Population
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Objective: To assess the frequency and association of Glutathione S-Transferase Theta 1 and Glutathione S-Transferase Mu 1 null genotypes in development of actinic keratosis (AK) in a group of Pakistani population.
The GSTM1 null genotype confers an increased risk for solar keratosis development in an Australian Caucasian population.
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Solar keratoses affect approximately 50% of Australian Caucasians aged over 40 y. Solar keratoses can undergo malignant transformation into squamous cell carcinoma followed by possible metastasis and are risk factors for basal cell carcinoma, melanoma, and squamous cell carcinoma. The
Plasma antioxidant defense in actinic keratosis and basal cell carcinoma.
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BACKGROUND
Reactive oxygen species and lipid peroxides have been implicated in the pathogenesis of a variety of diseases, particularly cancer. There may be an inverse correlation between lipid peroxidation and antioxidant defense mechanisms. The aim of this study was to investigate whether certain
Inactivation of glutathione peroxidase activity contributes to UV-induced squamous cell carcinoma formation.
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Cutaneous squamous cell carcinomas (CSCC) are a common malignancy of keratinocytes that arise in sites of the skin exposed to excessive UV radiation. In the present study, we show that human SCC cell lines, preneoplastic solar keratoses (SK), and CSCC are associated with perturbations in glutathione
Glutathione S-transferase M1/T1 genotype and melanoma in a Southern Italian population: a case-control study.
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BACKGROUND
The aim of this study was to assess the frequency of GSTM1 and GSTT1 null genotype in melanoma patients and controls from Sicily and Calabria, two regions of Southern Italy never investigated on this issue before, that present a peculiar gene pool because of their geographical and
Expression of glutathione S-transferase-pi in malignant skin tumors.
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GST-pi has been known to be markedly increased in human (pre) neoplasms of several organs. In this paper, the significance of immunohistochemical detection of GST-pi in human malignant tumors of the skin was studied. In specimens from 40 patients with various skin cancers, malignant melanoma,
E6/E7 expression of human papillomavirus types in cutaneous squamous cell dysplasia and carcinoma in immunosuppressed organ transplant recipients.
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BACKGROUND
DNA of cutaneous human papillomavirus (HPV) types is frequently found in nonmelanoma skin cancer, and their E6 and E7 proteins can have transforming properties.
OBJECTIVE
To assess the biological activity of HPV types found in tumour tissues we examined HPV E6/E7 RNA expression and the
Evaluation of the antioxidant effects of melatonin on the larynx mucosa of rats exposed to environmental tobacco smoke.
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OBJECTIVE
This study's aim was to investigate the effect of melatonin in terms of mitigating the effects of smoking on the laryngeal mucosa of rats exposed to environmental tobacco smoke.
METHODS
Rats were divided into four groups: Melatonin + Smoking group exposed to smoke with melatonin; Smoking
Modern approach to topical treatment of aging skin.
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The main processes involved in skin aging are intrinsic and extrinsic. Apart from them, so called stochastic aging connotes cell damage caused by metabolic processes, free radicals and cosmic irradiation. The clinical expression of intrinsic aging include smooth, dry, and thinned skin with
Citral prevents UVB-induced skin carcinogenesis in hairless mice.
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The incidence of skin cancers has increased worldwide, requiring more prevention of this type of cancer. The use of sunscreen and the control of the time of exposure to sunlight are the recognized forms of prevention. However, new substances have been researched in order to develop formulations with
Skin aging.
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There are two main processes that induce skin aging: intrinsic and extrinsic. A stochastic process that implies random cell damage as a result of mutations during metabolic processes due to the production of free radicals is also implicated. Extrinsic aging is caused by environmental factors such as
Nrf2 Activation Promotes Keratinocyte Survival during Early Skin Carcinogenesis via Metabolic Alterations.
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Pharmacologic activation of the transcription factor NRF2 has been suggested to offer a strategy for cancer prevention. In this study, we present evidence from murine tumorigenesis experiments suggesting there may be limitations to this possibility, based on tumorigenic effects of Nrf2 in murine
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