thiosulfinate/neoplasms

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Induction of apoptosis by thiosulfinates in primary human prostate cancer cells.

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Thiosulfinates, a substance of Allium tuberosum L., is a known folk medicine that has been extensively used in diet to treat diseases. In the present study, we have evaluated the effect of thiosulfinates from Allium tumberosum L. on proliferation of metastasis (DU145) and primary malignant tumor

Synthesis and in vitro biological evaluation of thiosulfinate derivatives for the treatment of human multidrug-resistant breast cancer.

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Organosulfur compounds derived from Allium vegetables have long been recognized for various therapeutic effects, including anticancer activity. Allicin, one of the main biologically active components of garlic, shows promise as an anticancer agent; however, instability makes it unsuitable for

Cost Effective Use of a Thiosulfinate-Enriched Allium sativum Extract in Combination with Chemotherapy in Colon Cancer.

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In this work, we sought to investigate the effects of a thiosulfinate-enriched garlic extract, co-administered with 5-fluorouracil (5-FU) or oxaliplatin chemotherapy, on the viability of colon cancer cells (Caco-2 and HT-29). We also addressed the economic feasibility of a new combined treatment of

Thiosulfinates from Allium tuberosum L. induce apoptosis via caspase-dependent and -independent pathways in PC-3 human prostate cancer cells.

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This study was aimed to evaluate the apoptotic effects of thiosulfinates purified from Allium tuberosum L. on PC-3 human prostate cancer cells, and to elucidate detailed apoptosis mechanisms. Thiosulfinates significantly decrease viable cell numbers in dose- and time-dependent manners by apoptotic

Mechanisms of thiosulfinates from Allium tuberosum L.-induced apoptosis in HT-29 human colon cancer cells.

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This study was performed to elucidate the apoptotic pathways by thiosulfinates, major biologically active components of Allium tuberosum L., in HT-29 human colon cancer cells. Thiosulfinates significantly induced cell death in dose- and time-dependent manners in HT-29 cells, which is associated with

Allium compounds, dipropyl and dimethyl thiosulfinates as antiproliferative and differentiating agents of human acute myeloid leukemia cell lines.

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Epidemiologic studies support the premise that Allium vegetables may lower the risk of cancers. The beneficial effects appear related to the organosulfur products generated upon processing of Allium. Leukemia cells from patients with acute myeloid leukemia (AML) display high proliferative capacity

Allyl-thiosulfinates, the bacteriostatic compounds of garlic against Helicobacter pylori.

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Allicin and allyl-methyl plus methyl-allyl thiosulfinate from acetonic garlic extracts (AGE) have been isolated by high-performance liquid chromatography. These compounds have shown inhibition of the in vitro growth of Helicobacter pylori (Hp), the bacterium responsible for serious gastric diseases

Cysteine and glutathione mixed-disulfide conjugates of thiosulfinates: chemical synthesis and biological activities.

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The chemical syntheses of cysteine (CYS) and glutathione (GSH) mixed -disulfide conjugates (CySSR, GSSR, respectively) of mercapto residues representing most of the R groups of thiosulfinates (R = methyl, ethyl, propyl, and allyl) are described. Gram-scale conjugates were prepared as >98% pure

Cytotoxic and antitumor activities of thiosulfinates from Allium tuberosum L.

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In this study we isolated crude thiosulfinates from Allium tuberosum L. using CH 2Cl 2 and then with silica gel column chromatography purified S-methyl methanthiosulfinate and S-methyl 2-propene-1-thiosulfinate from the crude thiosulfinates. Subsequently, in vitro cytotoxicities against human cancer

Inhibition of tumor growth by a novel approach: in situ allicin generation using targeted alliinase delivery.

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Allicin (diallyl thiosulfinate), a highly active component in extracts of freshly crushed garlic, is the interaction product of non-protein amino acid alliin (S-allyl-L-cysteine sulfoxide) with the enzyme alliinase (alliin lyase; EC 4.4.1.4). Allicin was shown to be toxic in various mammalian cells

Allicin purified from fresh garlic cloves induces apoptosis in colon cancer cells via Nrf2.

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Allicin (diallyl thiosulfinate) is the best-known biologically active component in freshly crushed garlic extract. We developed a novel, simple method to isolate active allicin, which yielded a stable compound in aqueous solution amenable for use in in vitro and in vivo studies. We focused on the in

Inhibition of platelet activation by lachrymatory factor synthase (LFS)-silenced (tearless) onion juice.

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Onion and garlic are renowned for their roles as functional foods. The health benefits of garlic are attributed to di-2-propenyl thiosulfinate (allicin), a sulfur compound found in disrupted garlic but not found in disrupted onion. Recently, onions have been grown with repressed lachrymatory factor

Bioactive organosulfur phytochemicals in Brassica oleracea vegetables--a review.

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Sulfur-containing phytochemicals of two different kinds are present in all Brassica oleracea (Cruciferae) vegetables (cabbage, broccoli, etc.). They are glucosinolates (previously called thioglucosides) and S-methyl cysteine sulfoxide. These compounds, which are derived in plant tissue by amino acid

Helicobacter pylori--in vitro susceptibility to garlic (Allium sativum) extract.

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Gastric cancer is the major cancer in the developing world and one of the top two worldwide. Helicobacter pylori is a bacterium implicated in the etiology of stomach cancer. The incidence of stomach cancer is lower in individuals and populations with high Allium vegetable intakes. Allium vegetables,

Solution-phase synthesis and biological evaluation of triostin A and its analogues.

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Triostin A is a biosynthetic precursor of echinomycin which is one of the most potent hypoxia inducible factor 1 (HIF-1) inhibitors. An improved solution-phase synthesis of triostin A on a preparative scale has been achieved in 17.5% total yield in 13 steps. New analogues of triostin A with various

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