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Matti Narkia

Berberine inhibits human tongue squamous carcinoma cancer tumor growth in a murine xeno... - 0 views

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    Berberine inhibits human tongue squamous carcinoma cancer tumor growth in a murine xenograft model.
    Ho YT, Yang JS, Lu CC, Chiang JH, Li TC, Lin JJ, Lai KC, Liao CL, Lin JG, Chung JG.
    Phytomedicine. 2009 Sep;16(9):887-90. Epub 2009 Mar 20.
    PMID: 19303753

    Our primary studies showed that berberine induced apoptosis in human tongue cancer SCC-4 cells in vitro. But there is no report to show berberine inhibited SCC-4 cancer cells in vivo on a murine xenograft animal model. SCC-4 tumor cells were implanted into mice and groups of mice were treated with vehicle, berberine (10mg/kg of body weight) and doxorubicin (4mg/kg of body weight). The tested agents were injected once per four days intraperitoneally (i.p.), with treatment starting 4 weeks prior to cells inoculation. Treatment with 4mg/kg of doxorubicin or with 10mg/kg of berberine resulted in a reduction in tumor incidence. Tumor size in xenograft mice treated with 10mg/kg berberine was significantly smaller than that in the control group. Our findings indicated that berbeirne inhibits tumor growth in a xenograft animal model. Therefore, berberine may represent a tongue cancer preventive agent and can be used in clinic.
Matti Narkia

Developmental toxicity evaluation of berberine in rats and mice. Gloria D. Jahnke. 2006... - 0 views

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    Developmental toxicity evaluation of berberine in rats and mice.
    Jahnke GD, Price CJ, Marr MC, Myers CB, George JD.
    Birth Defects Res B Dev Reprod Toxicol. 2006 Jun;77(3):195-206.
    PMID: 16634078
    DOI: 10.1002/bdrb.20075

    BACKGROUND: Berberine, a plant alkaloid, is found in some herbal teas and health-related products. It is a component of goldenseal, an herbal supplement. Berberine chloride dihydrate (BCD) was evaluated for developmental toxicity in rats and mice.
    METHODS: Berberine chloride dihydrate was administered in the feed to timed-mated Sprague-Dawley (CD) rats (0, 3625, 7250, or 14,500 ppm; on gestational days [GD] 6-20), and Swiss Albino (CD-1) mice (0, 3500, 5250, or 7000 ppm; on GD 6-17). Ingested doses were 0, 282, 531, and 1313 mg/kg/day (rats) and 0, 569, 841, and 1155 mg/kg/day (mice).
    RESULTS:There were no maternal deaths. The rat maternal lowest observed adverse effect level (LOAEL), based on reduced maternal weight gain, was 7250 ppm. The rat developmental toxicity LOAEL, based on reduced fetal body weight per litter, was 14,500 ppm. In the mouse study, equivocal maternal and developmental toxicity LOAELs were 5250 ppm. Due to scattering of feed in the high dose groups, a gavage study at 1000 mg/kg/day was conducted in both species.
    CONCLUSIONS: In rats, maternal, but not fetal adverse effects were noted. The maternal toxicity LOAEL remained at 7250 ppm (531 mg/kg/day) based on the feed study and the developmental toxicity NOAEL was raised to 1000 mg/kg/day BCD based on the gavage study. In the mouse, 33% of the treated females died. Surviving animals had increased relative water intake, and average fetal body weight per litter decreased 5-6% with no change in live litter size. The maternal toxicity LOAEL remained at 5250 ppm (841 mg/kg/day) BCD, based on increased water consumption. The developmental toxicity LOAEL was raised to 1000 mg/kg/day BCD based on decreased fetal body weight.
Matti Narkia

Mechanisms of Berberine (Natural Yellow 18)-Induced Mitochondrial Dysfunction: Interact... - 0 views

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    Mechanisms of berberine (natural yellow 18)-induced mitochondrial dysfunction: interaction with the adenine nucleotide translocator.
    Pereira CV, Machado NG, Oliveira PJ.
    Toxicol Sci. 2008 Oct;105(2):408-17. Epub 2008 Jul 3.
    PMID: 18599498
    doi: 10.1124/jpet.107.128017

    The data from the present work appear to show that berberine also presents some degree of toxicity to "nontumor" systems, which should be carefully understood. ANT inhibition in nontumor cells by berberine would be responsible for a decrease in energy production and could also result in MPT induction. To the best of our knowledge, no full toxicity assessment exists for berberine in humans, although its use in several commercially available supplements suggests that the compound may present a relatively wide safety interval. In fact, a study with patients with congestive heart failure treated with 1.2 g/day of oral berberine revealed low toxicity and resulted into an average plasma concentration of 0.11 mg/l which would translate into 0.3µM (Zeng and Zeng, 1999Go). Repeated cumulative treatments, alternative forms of formulation (e.g., topical application vs. injection) or more importantly, active mitochondrial accumulation due to its positive charge would be expected to increase its concentration in cells into the range of concentrations used in this study.

    Empirical data from nontraditional medicines plus the use of extensive clinical assays would allow the use of berberine as a promising antimelanoma agent while maintaining its safety for humans. In radial/vertical forms of melanoma, a possible topical application of berberine would also be possible, thus minimizing side effects on other organs.

    In conclusion, the present work identifies the ANT as an important target for berberine, with clear relevance for its proposed antitumor effects.
Matti Narkia

Mitochondrially Targeted Effects of Berberine [Natural Yellow 18, 5,6-dihydro-9,10-dime... - 0 views

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    Mitochondrially targeted effects of berberine [Natural Yellow 18, 5,6-dihydro-9,10-dimethoxybenzo(g)-1,3-benzodioxolo(5,6-a) quinolizinium] on K1735-M2 mouse melanoma cells: comparison with direct effects on isolated mitochondrial fractions.
    Pereira GC, Branco AF, Matos JA, Pereira SL, Parke D, Perkins EL, Serafim TL, Sardão VA, Santos MS, Moreno AJ, Holy J, Oliveira PJ.
    J Pharmacol Exp Ther. 2007 Nov;323(2):636-49. Epub 2007 Aug 17.
    PMID: 17704354
    doi: 10.1124/jpet.107.128017

    The present work shows that berberine is accumulated by mitochondria of a mouse melanoma cell line, leading to mitochondrial fragmentation and dysfunction, accompanied by decreased cellular energy charge. When the effect was compared with the results obtained on isolated mitochondrial fractions, it is observed that regardless of the system used, berberine is toxic for mitochondria. One major limitation of the present study (as in many others) is the lack of knowledge of the real concentration of berberine that reaches mitochondria in intact cells. Although we do not possess data regarding this aspect, it is wise to speculate that mitochondrial berberine concentrations will be much higher than in the bulk cytosol due to electrophoretic accumulation. We believe that the range of berberine concentrations accumulated by mitochondria in intact cells is within the range of concentrations used on isolated mitochondrial fractions in the present study. The present work not only provides insights on the mechanism by which berberine interferes with tumor cell proliferation, demonstrating previously unknown effects on mitochondrial physiology, but also raises a note of caution on the use of berberine as a nontoxic "natural" over-the-counter medication.
Matti Narkia

Berberine Inhibits Metastasis of Nasopharyngeal Carcinoma 5-8F Cells by Targeting Rho K... - 0 views

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    Berberine inhibits metastasis of nasopharyngeal carcinoma 5-8F cells by targeting Rho kinase-mediated Ezrin phosphorylation at threonine 567.
    Tang F, Wang D, Duan C, Huang D, Wu Y, Chen Y, Wang W, Xie C, Meng J, Wang L, Wu B, Liu S, Tian D, Zhu F, He Z, Deng F, Cao Y.
    J Biol Chem. 2009 Oct 2;284(40):27456-66. Epub 2009 Aug 3.
    PMID: 19651779
Matti Narkia

Modulation of prostate cancer genetic risk by omega-3 and omega-6 fatty acids - Journal... - 0 views

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    Modulation of prostate cancer genetic risk by omega-3 and omega-6 fatty acids.
    Berquin IM, Min Y, Wu R, Wu J, Perry D, Cline JM, Thomas MJ, Thornburg T, Kulik G, Smith A, Edwards IJ, D'Agostino R, Zhang H, Wu H, Kang JX, Chen YQ.
    J Clin Invest. 2007 Jul;117(7):1866-75.
    PMID: 17607361

    Our data suggest that modulation of prostate cancer development by polyunsaturated fatty acids is mediated in part through Bad-dependent apoptosis. This study highlights the importance of gene-diet interactions in prostate cancer.
Matti Narkia

Gene Therapy Technique Thwarts Cancer By Cutting Off Tumor Blood Supply - 0 views

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    ScienceDaily (June 11, 2009) - University of Florida researchers have come up with a new gene therapy method to disrupt cancer growth by using a synthetic protein to induce blood clotting that cuts off a tumor's blood and nutrient supply.

    In mice implanted with human colorectal cancer cells, tumor volume decreased 53 percent and cancer cell growth slowed by 49 percent in those treated with a gene that encodes for the artificial protein, compared with those that were untreated.
Matti Narkia

Systemic Treatment with the Antidiabetic Drug Metformin Selectively Impairs p53-Deficie... - 0 views

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    Systemic treatment with the antidiabetic drug metformin selectively impairs p53-deficient tumor cell growth.
    Buzzai M, Jones RG, Amaravadi RK, Lum JJ, DeBerardinis RJ, Zhao F, Viollet B, Thompson CB.
    Cancer Res. 2007 Jul 15;67(14):6745-52.
    PMID: 17638885
    doi: 10.1158/0008-5472.CAN-06-4447
Matti Narkia

Prevention and treatment of pancreatic cancer by curcumin in combination with omega-3 f... - 0 views

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    Mice fed fish oil and curcumin showed a significantly reduced tumor volume, 25% (P < 0.04) and 43% (P < 0.005), respectively, and importantly, a combination of curcumin and fish oil diet showed > 72% (P < 0.0001) tumor volume reduction. Expression and activity of iNOS, COX-2, and 5-LOX are downregulated, and p21 is upregulated in tumor xenograft fed curcumin combined with fish oil diet when compared to individual diets. The preceding results evidence for the first time that curcumin combined with omega-3 fatty acids provide synergistic pancreatic tumor inhibitory properties.

    Prevention and treatment of pancreatic cancer by curcumin in combination with omega-3 fatty acids.
    Swamy MV, Citineni B, Patlolla JM, Mohammed A, Zhang Y, Rao CV.
    Nutr Cancer. 2008;60 Suppl 1:81-9.
    PMID: 19003584
Matti Narkia

Carbohydrate restriction may slow prostate tumor growth - eurekalert.org - 0 views

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    DURHAM, N.C. -- Restricting carbohydrates, regardless of weight loss, appears to slow the growth of prostate tumors, according to an animal study being published this week by researchers in the Duke Prostate Center.

    "Previous work here and elsewhere has shown that a diet light in carbohydrates could slow tumor growth, but the animals in those studies also lost weight, and because we know that weight loss can restrict the amount of energy feeding tumors, we weren't able to tell just how big an impact the pure carbohydrate restriction was having, until now," said Stephen Freedland, M.D., a urologist in the Duke Prostate Center and lead investigator on this study.

    The researchers believe that insulin and insulin-like growth factor contribute to the growth and proliferation of prostate cancer, and that a diet devoid of carbohydrates lowers serum insulin levels in the bodies of the mice, thereby slowing tumor growth, Freedland said.
Matti Narkia

White button mushroom (Agaricus bisporus) exhibits antiproliferative and proapoptotic p... - 0 views

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    White button mushroom (Agaricus bisporus) exhibits antiproliferative and proapoptotic properties and inhibits prostate tumor growth in athymic mice.
    Adams LS, Phung S, Wu X, Ki L, Chen S.
    Nutr Cancer. 2008;60(6):744-56.
    PMID: 19005974
Matti Narkia

Effects of Dietary Flaxseed on Intestinal Tumorigenesis in ApcMin Mouse - Nutrition and... - 0 views

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    Effects of dietary flaxseed on intestinal tumorigenesis in Apc(Min) mouse.
    Bommareddy A, Zhang X, Schrader D, Kaushik RS, Zeman D, Matthees DP, Dwivedi C.
    Nutr Cancer. 2009;61(2):276-83.
    PMID: 19235044
    DOI: 10.1080/01635580802419764
Matti Narkia

Flax In Diet Means Fewer Tumors - 0 views

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    "Results indicated that mice on diets supplemented with flaxseed meal and flaxseed oil had, on average, 45 percent fewer tumors in the small intestine and the colon compared to the control group."

    The scientists published their research findings in February in the academic peer-reviewed international journal Nutrition and Cancer.
Matti Narkia

IL-7/IL-15 increases immune response, inhibits tumor development, metastases - 0 views

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    MedWire News: Intralesional injection of interleukin (IL)-7 and IL-15 enhances the effects of radiofrequency thermal ablation (RFA) in inhibiting tumor development and metastases, animal study results show.

    RFA, used for the treatment of solid tumors and known for its localized tumor effects, may activate immune responses and thereby reduce the risk for local tumor recurrence or distant metastases through T cell stimulation.

    However, studies have suggested that additional adjuvant immunotherapy may improve the efficacy of RFA.

    This preclinical study, reported in Breast Cancer Research and Treatment, was conducted to evaluate the effect of addition of the cytokines IL-7 and IL-15 to RFA in models of breast cancer.
Matti Narkia

Platelets and fibrin(ogen) increase metastatic potential by impeding natural killer cel... - 0 views

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    Platelets and fibrin(ogen) increase metastatic potential by impeding natural killer cell-mediated elimination of tumor cells.
    Palumbo JS, Talmage KE, Massari JV, La Jeunesse CM, Flick MJ, Kombrinck KW, Jirousková M, Degen JL.
    Blood. 2005 Jan 1;105(1):178-85. Epub 2004 Sep 14.
    PMID: 15367435
    DOI 10.1182/blood-2004-06-2272
Matti Narkia

Lysis of tumor cells by natural killer cells in mice is impeded by platelets. - Cancer ... - 0 views

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    Lysis of tumor cells by natural killer cells in mice is impeded by platelets.
    Nieswandt B, Hafner M, Echtenacher B, Männel DN.
    Cancer Res. 1999 Mar 15;59(6):1295-300.
    PMID: 10096562
Matti Narkia

White Button Mushroom (Agaricus Bisporus) Exhibits Antiproliferative and Proapoptotic P... - 0 views

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    White button mushroom (Agaricus bisporus) exhibits antiproliferative and proapoptotic properties and inhibits prostate tumor growth in athymic mice.
    Adams LS, Phung S, Wu X, Ki L, Chen S.
    Nutr Cancer. 2008;60(6):744-56.
    PMID: 19005974
    DOI: 10.1080/01635580802192866
Matti Narkia

White button mushrooms appear to boost immune function - Tufts Journal: Briefs: Healthy... - 0 views

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    White button mushrooms appear to boost immune function

    It appears that a little fungus may be good for what ails you. That's the conclusion of a new study that found that eating white button mushrooms may boost the immune system and protect against infection.

    If the research, done on animals, translates to people, it could raise the health-benefit profile of the fungus, which also contains high concentrations of the super-antioxidant ergothioneine, which protects cells from damaging free radicals.

    "This is the first published study showing the effect of white button mushrooms on immune function," Dayong Wu, a scientist in the Immunology Laboratory at the Jean Mayer USDA Human Nutrition Research Center on Aging at Tufts and lead author of the study, published in the June issue of the Journal of Nutrition, told NutraIngredients.com.

    The research also suggests that the mushroom may boost both innate and acquired immune system health. The innate immune system, the one you're born with, is the body's first line of defense. The acquired immune system revs up if a pathogen makes its way past the innate system and customizes the immune response to target the invader.
Matti Narkia

Eating mushrooms may boost immune system (ASU Research) - 0 views

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    Edible mushrooms are a versatile functional food and have been touted as a way to preserve youth, longevity and overall health for centuries. Now nutrition researchers from Arizona State University and Pennsylvania State University are finding that they may even help boost the immune system and reduce inflammation, especially in the colon.

    Keith R. Martin, ASU assistant professor in nutrition, along with his Penn State colleagues, experimented with various types of mushrooms, from the more common white button to the exotic like shiitake and oyster, to see what sort of effect they had on the immune system. Their paper was published in late February in BMC Immunology, a peer reviewed online journal.

    "We found that the white button mushroom seemed to be the most effective in boosting the immune system, which is good because they are the most affordable," said Martin.
Matti Narkia

In vitro and in vivo immunomodulating and immunorestorative effects of Astragalus membr... - 0 views

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    In vitro and in vivo immunomodulating and immunorestorative effects of Astragalus membranaceus.
    Cho WC, Leung KN.
    J Ethnopharmacol. 2007 Aug 15;113(1):132-41. Epub 2007 May 31.
    PMID: 17611061
    doi:10.1016/j.jep.2007.05.020    
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