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alpha tocopherol/vähk

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OBJECTIVE Diabetes mellitus Type 2 is one of the most widespread chronic metabolic diseases. In most cases, this type of diabetes is associated with alterations in levels of some inflammatory cytokines and hormones. Considering anti-inflammatory properties of plant extracts rich in ascorbic acid
Cancer development and progression are closely associated with inflammation. NF-κB (nuclear factor κB) provides a mechanistic link between inflammation and cancer, and is a major factor controlling the ability of malignant cells to resist tumour surveillance mechanisms. NF-κB might also regulate
BACKGROUND Some epidemiological investigations suggest that higher intake or biochemical status of vitamin E and beta-carotene might be associated with reduced risk of colorectal cancer. METHODS We tested the effects of alpha-tocopherol and beta-carotene supplementation on the incidence of
OBJECTIVE Epidemiological studies have suggested a protective effect of vegetables and fruits on urinary tract cancer but the possible protective nutrients are unknown. We studied the effect of alpha-tocopherol (a form of vitamin E) and beta-carotene supplementation on urinary tract cancer in the
BACKGROUND Vitamin E and beta-carotene are considered to decrease the risk of gastric cancer both in humans and in laboratory animals. We studied the effect of dietary supplementation with alpha-tocopherol and beta-carotene on the end-of-trial prevalence of premalignant and malignant lesions of the
Prostate cancer is the second most commonly diagnosed cancer in men, and metastatic prostate cancer is currently incurable. Prostate cancer frequently becomes resistant to standard of care treatments, and the administration of chemotherapeutic drugs is often accompanied by toxic side effects.
BACKGROUND Although smoking and alcohol consumption are the major risk factors for upper aerodigestive tract cancers, observational studies indicate a protective role for fruits, vegetables, and antioxidant nutrients. METHODS The authors examined whether daily supplementation with 50 mg dl
The constituent amino acids of reduced glutathione (GSH), GSH itself, and D-alpha-tocopherol inhibited 12-O-tetradecanoyl-phorbol-13-acetate (TPA)-induced ornithine decarboxylase (ODC, L-ornithine carboxy-lyase, EC 4.1.1.17) activity in mouse epidermis in vivo and in vitro. The inhibitory effects of

The selective cytotoxic effect of carotenoids and alpha-tocopherol on human cancer cell lines in vitro.

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This study compares the toxic effects of the carotenoids, beta-carotene and canthaxanthin, and alpha-tocopherol (vitamin E) on human tumor cells and their normal counterparts in vitro. Seven different malignant cell lines were examined: oral carcinoma (two cell lines), breast (two cell lines), lung
OBJECTIVE We evaluated the association between alcohol intake and lung cancer in a trial-based cohort in Finland, the Alpha-Tocopherol, Beta-Carotene Cancer Prevention Study (ATBC Study). METHODS During an average of 7.7 years of follow-up, 1059 lung cancer cases were diagnosed among the 27,111 male
We determined whether serum carotenoid or retinol concentrations were altered by beta-carotene supplementation in the Alpha-Tocopherol, Beta-Carotene Cancer Prevention Study and whether such effects were modified by alcohol consumption or cigarette use. Participants in this substudy were 491
The serum levels of vitamin A (retinol), vitamin E (alpha-tocopherol), cholesterol and triglycerides were studied in a group of 40 women who had been diagnosed as having breast cancer, and they were compared to the levels found in a group of 30 healthy women. Our results indicate that the only
No chemoprevention strategies have been proven effective for lung cancer. We evaluated the effect of 13-cis retinoic acid (13-cis RA), with or without alpha tocopherol, as a lung cancer chemoprevention agent in a phase II randomized controlled clinical trial of adult subjects at high risk for lung

Alpha-tocopherol suppresses mammary tumor sensitivity to anthracyclines in fish oil-fed rats.

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Polyunsaturated fatty acids (PUFAs) have been reported to enhance the efficacy of chemotherapeutic agents that produce reactive oxygen species such as anthracyclines. We previously reported in a human breast cancer cell line that the increased cytotoxic activity of anthracyclines by several PUFAs
BACKGROUND High serum or dietary levels of vitamin E and beta carotene appear to be associated with lower risk of stroke, but studies regarding their supplementation have not supported their use in stroke prevention. OBJECTIVE To determine if vitamin E (dl-alpha tocopherol) and beta carotene
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