alpha tocopherol/sarcoma

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Possible protective effects of alpha-tocopherol on enhanced induction of reactive oxygen species by 2-methoxyestradiol in tumors.

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Several non-surgical tumor treatment modalities produce their cytotoxic activity by generating reactive oxygen species (ROS). Anti-oxidative enzymes such as superoxide dismutase (SOD) or exogenously supplied antioxidants may therefore reduce the efficacy of these treatments. The aim of the present

Antiproliferative effect of pheophorbide a-mediated photodynamic therapy and its synergistic effect with doxorubicin on multiple drug-resistant uterine sarcoma cell MES-SA/Dx5.

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Prolonged cancer chemotherapy is associated with the development of multidrug resistance (MDR), which is a major cause of treatment failure. Photodynamic therapy (PDT) has been applied as anticancer therapy and a means of circumventing MDR. The antiproliferative effect of pheophorbide a-mediated

Impact of therapeutically induced reactive oxygen species and radical scavenging by alpha-tocopherol on tumor cell adhesion.

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Many tumor treatment modalities such as ionizing radiation or some chemotherapy induce reactive oxygen species (ROS) resulting in therapeutic cell damage. The aim of this study was to analyze whether such ROS induction may affect the mechanical stability of solid tumor tissue by degradation of the

RGD-decorated redox-responsive d-α-tocopherol polyethylene glycol succinate-poly(lactide) nanoparticles for targeted drug delivery.

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Developing multifunctional nanoparticles (NPs) to improve therapeutic efficacy is highly desirable in cancer therapy. In an attempt to respond to such a challenge, a novel copolymer, d-α-tocopherol polyethylene glycol succinate-SS-poly(lactide) (TPGS-SS-PLA) with a disulfide linkage between the TPGS

D-α-tocopherol polyethylene glycol succinate-based derivative nanoparticles as a novel carrier for paclitaxel delivery.

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Paclitaxel (PTX) is one of the most effective antineoplastic drugs. Its current clinical administration Taxol(®) is formulated in Cremophor EL, which causes serious side effects. Nanoparticles (NP) with lower systemic toxicity and enhanced therapeutic efficiency may be an alternative formulation of

Impact of reactive oxygen species on the expression of adhesion molecules in vivo.

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Many non-surgical tumor treatments induce reactive oxygen species (ROS) which result in cell damage. This study investigated the impact of ROS induction on the expression of adhesion molecules and whether alpha-tocopherol pre-treatment could have a protective effect. Experimental rat DS-sarcomas

[Nature of the modifying action of polyunsaturated fatty acids on the growth of transplantable tumors of different types].

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Modification effect of sodium salts and ethers of linolenic, arachidonic and alpha-linolenic acids on the growth of transplantable mouse tumors was examined. Polyunsaturated fatty acids (PUFA) enhanced the growth of mammary adenocarcinoma Ca-755, whereas the opposite effect was observed in mice with

Overexpression and amplification of the c-myc gene in mouse tumors induced by chemicals and radiations.

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We examined expression of the c-myc gene by the dot blot hybridization of total cellular RNA from mouse primary tumors induced by chemicals and radiations. Expression of the c-myc gene was found to be elevated in 69 cases among 177 independently induced tumors of 12 different types. DNA from tumors

Studies on the biological activity of tocotrienols.

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Tocotrienols were evaluated for activity against transplantable murine tumors inoculated i.p. into mouse, and the activities of two tocotrienols and alpha-tocopherols were compared. When the compounds were injected i.p., alpha- and gamma-tocotrienols were effective against sarcoma 180, Ehrlich

Reactive oxygen species mediated membrane damage induced by fullerene derivatives and its possible biological implications.

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Fullerenes have attracted considerable attention in recent years due to their unique chemical structure and potential applications. Hence it is of interest to study their biological effects. Using rat liver microsomes as model systems we have examined the ability of the most commonly used fullerene,

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