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Matti Narkia

Common diabetes drug may 'revolutionize' cancer therapies - 1 views

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    Researchers at McGill University and the University of Pennsylvania have discovered that a widely used anti-diabetic drug can boost the immune system and increase the potency of vaccines and cancer treatments. Their findings will be published June 3 in the journal Nature.

    The discovery was made by Dr. Russell Jones, an assistant professor at McGill's Goodman Cancer Centre and the Department of Physiology, Faculty of Medicine, Yongwon Choi, PhD, professor of pathology and laboratory medicine, and postdoctoral fellow Erika Pearce, PhD, of the University of Pennsylvania. They discovered that the widely prescribed diabetes treatment metformin increases the efficiency of the immune system's T-cells, which in turn makes cancer and virus-fighting vaccines more effective.
Matti Narkia

Multiple roles for CD4+ T cells in anti-tumor immune responses. - Wiley InterScience ::... - 0 views

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    Multiple roles for CD4+ T cells in anti-tumor immune responses.
    Kennedy R, Celis E.
    Immunol Rev. 2008 Apr;222:129-44. Review.
    PMID: 18363998
    DOI: 10.1111/j.1600-065X.2008.00616.x
Matti Narkia

Interleukin 2-mediated conversion of ovarian cancer-associated CD4+ regulatory T cells ... - 0 views

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    Interleukin 2-mediated conversion of ovarian cancer-associated CD4+ regulatory T cells into proinflammatory interleukin 17-producing helper T cells.
    Leveque L, Deknuydt F, Bioley G, Old LJ, Matsuzaki J, Odunsi K, Ayyoub M, Valmori D.
    J Immunother. 2009 Feb-Mar;32(2):101-8.
    PMID: 19238008
    doi: 10.1097/CJI.0b013e318195b59e

    Thus, although the impact of TH17 cells on the evolution of EOC remains to be established, our data suggest that local IL-2 treatment in ovarian cancer may result in the conversion of tumor-associated Treg into TH17 cells, relieve Treg-mediated suppression, and contribute to enhance antitumor immunity.
Matti Narkia

T-helper/T-regulator lymphocyte ratio as a new immunobiological index to quantify the a... - 0 views

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    T-helper/T-regulator lymphocyte ratio as a new immunobiological index to quantify the anticancer immune status in cancer patients.
    Brivio F, Fumagalli L, Parolini D, Messina G, Rovelli F, Rescaldani R, Vigore L, Vezzo R, Vaghi M, Di Bella S, Lissoni P.
    In Vivo. 2008 Sep-Oct;22(5):647-50.
    PMID: 18853761

    RESULTS: The mean TH/TR ratio observed in patients with metasytases was significantly lower with respect to that found in both patients without metastases and controls. On the contrary, the absolute mean number of T-reg cells was higher in patients with metastases than in those without, but the difference was not statistically significant. CONCLUSION: The evaluation of T-reg cells in terms of their proportion with respect to T-helper cell total number seems to be more appropriate than the simple measurement of their absolute count, in order to quantify cancer-related immunosuppression. Thus, the TH/TR ratio could represent a useful biological marker to explore the immune status of cancer patients.
Matti Narkia

Exercise affects platelet-impeded antitumor cytotoxicity of natural killer cell. - [Med... - 0 views

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    Exercise affects platelet-impeded antitumor cytotoxicity of natural killer cell.
    Wang JS, Chung Y, Chow SE.
    Med Sci Sports Exerc. 2009 Jan;41(1):115-22.
    PMID: 19092699
Matti Narkia

Definition of beta-glucan - National Cancer Institute Drug Dictionary - 0 views

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    beta-glucan
    A polysaccharide isolated from the cell walls of bacteria, plants, and fungi with immunostimulant and antineoplastic activities. In a solubilized form, beta-glucan binds to a lectin site within complement receptor 3 (CR3) on leukocytes, priming the receptor to trigger cytotoxic degranulation of leukocytes when leukocyte CR3 binds to complement 3 (iC3b)-coated tumors. Thus, the attachment of beta-glucan to CR3 of circulating leukocytes simulates leukocytes to kill iC3b-coated tumor cells in the same way as they kill iC3b-coated yeast. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)
Matti Narkia

Beta-glucan - Wikipedia, the free encyclopedia - 0 views

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    β-Glucans (or beta-glucans) are polysaccharides of D-glucose monomers linked by glycosidic bonds. They occur most commonly as cellulose in plants and trees, the bran of cereal grains, the cell wall of baker's yeast, certain types of fungi, and many kinds of mushrooms and bacteria. Some forms of beta glucans are useful in human nutrition as texturing agents and as soluble fiber supplements, but problematic in brewing as excessive levels make the wort too viscous. Yeast derived beta glucans are notable for their immunomodulatory function
Matti Narkia

Sloan-Kettering - Coriolus Versicolor - 1 views

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    Coriolus versicolor is a mushroom of the Basidiomycetes class. It was used initially in Traditional Chinese medicine as a tonic, but recent studies suggest that it has immunostimulant and anti-tumor properties. Polysaccharide-K (PSK), a proprietary product derived from Coriolus, was developed for cancer treatment in Japan. When used as an adjuvant, PSK appears to improve survival rates in patients with gastric (1) (2) and colorectal (3) (4) (5) cancers. Other Coriolus extracts, such as polysaccharide-peptide (PSP) and VPS, are available as dietary supplements. When used in conjunction with chemotherapy, PSP may benefit patients with advanced non-small cell lung cancer (7). Other clinical studies using Coriolus extract alone or in combination with other botanicals also suggest positive immunomodulatory effects (8) (9). However, studies on breast cancer (10), hepatocellular carcinoma (11), and leukemia (12) produced mixed results. A hot water extract of Coriolus, VPS, was found to enhance development of large intestinal tumors in mice (21). Coriolus extracts are generally well tolerated but minor adverse effects have been reported.

    Many over-the-counter Coriolus products are not standardized, making it difficult to compare potency between brands. It is also unclear if PSK, PSP and other Coriolus extracts have comparable effects.
Matti Narkia

Sloan-Kettering - Garlic - 0 views

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    Derived from the bulb or clove of the plant. Garlic is used as a spice and to treat hyperlipidemia, hypertension, atherosclerosis, cancer, and infections. Processing can have a substantial effect on the chemical content in garlic; the volatile oil components are sensitive to heat and certain enzymes are acid-labile. Several oral garlic formulations are available, and clinical studies have addressed a variety of the proposed claims. Placebo-controlled trials on the cholesterol lowering effect of garlic yielded mixed results (16) (17) (18) (21) (22) (26). Studies evaluating the antithrombotic effects repeatedly have shown modest reduction in platelet aggregation, but varying levels of fibrinolytic activity. Research shows mixed effects with regard to reductions in blood glucose, blood pressure, or risk of cardiovascular disease (23). Frequently reported adverse events include bad breath, headache, fatigue, GI upset, diarrhea, sweating, and possible hypoglycemia (9). Because garlic is known to decrease platelet aggregation and potentially elevate the INR, it should not be used with anticoagulants or in patients with platelet dysfunction (15). Garlic appears to induce cytochrome p450 3A4 and may enhance metabolism of many medications (e.g. cyclosporin and saquinavir) (12). An analysis of several case-control studies in Europe suggests an inverse association between garlic consumption and risk of common cancers (25).
Matti Narkia

Sloan-Kettering - AHCC - 0 views

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    A proprietary extract prepared from co-cultured mycelia of several species of Basidiomycete mushrooms, including shiitake (Lentinus edodes), active hexose correlated compound (AHCC) is extracted from mushrooms using hot water following an enzyme pretreatment, but specific mushroom source and preparation details have not been fully disclosed. Patients use this to prevent and treat cancer. Animal studies suggest that AHCC has antioxidant effects and may protect against disorders induced by oxidative stress (1) and may also enhance resistance against bacterial (2) (7)and viral infections (3). In healthy humans, AHCC increased dendritic cell number and function (4)

    In vitro and animal studies show that AHCC exhibits some anticancer activities, but the results of these studies are vague
Matti Narkia

Coriolus versicolor and cancer (June 2003) - 0 views

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    Attached please find the final draft of Dr. Kenyon's non-controlled observational study on the use of Coriolus versicolor (non-extracted) in 30 solid tumour cancer patients. The final report will be published in the February edition of Mycology News 7.
    The patients were Stage III and Stage IV patients in which chemotherapy and radiotherapy were not considered successful. Below please find a synopsis of patient type.
Matti Narkia

Sloan-Kettering - Shiitake Mushroom - 0 views

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    Shiitake mushroom, native to East Asia, is cultivated worldwide for its purported health benefits. The fresh and dried forms of the mushroom are commonly used in East Asian cooking. It is also valued as an anticancer agent.
    Lentinan (1,3 Beta-D-glucan), a polysaccharide isolated from Shiitake, has been well studied and is thought responsible for its beneficial effects.
    It was shown to have anticancer effects in colon cancer cells (1), which may be due to its ability to suppress cytochrome P450 1A enzymes that are known to metabolize pro-carcinogens to active forms
Matti Narkia

In vitro and in vivo anti-tumor effects of Astragalus membranaceus - Cancer Lett. 2007 ... - 0 views

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    In vitro and in vivo anti-tumor effects of Astragalus membranaceus.
    Cho WC, Leung KN.
    Cancer Lett. 2007 Jul 8;252(1):43-54. Epub 2007 Jan 16.
    PMID: 17223259
    doi:10.1016/j.canlet.2006.12.001
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