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Dietary supplementation with white button mushroom enhances natural killer cell activity in C57BL/6 mice. Wu D, Pae M, Ren Z, Guo Z, Smith D, Meydani SN. J Nutr. 2007 Jun;137(6):1472-7. PMID: 17513409

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

The effects of whole mushrooms during inflammation. Yu S, Weaver V, Martin K, Cantorna MT. BMC Immunol. 2009 Feb 20;10:12. PMID: 19232107 doi:10.1186/1471-2172-10-12 In RAW 264.7 cells the induction of TNF-α production was highest in LPS and WB stimulated rather than the crimini, maitake, oyster, or shitake stimulated cells. The differences might be a result of differences in the quantity of the immunomodulatory substance or substances and or differences in solubility of mushrooms in the DMSO used to produce the extracts. However, the direction of the changes (increase versus decrease) were not different among the mushroom treatments. The lack of differential effects on cytokine secretion by the mushroom extracts suggests that the whole mushrooms must share a common component(s) that act to regulate immune function.

White button mushroom enhances maturation of bone marrow-derived dendritic cells and their antigen presenting function in mice.\nRen Z, Guo Z, Meydani SN, Wu D.\nJ Nutr. 2008 Mar;138(3):544-50.\nPMID: 18287364

Mushrooms could give the immune system a hand in attacking foreign invaders, if the effects in mice translate to humans. What's more, the common white button mushroom had stronger immune-boosting effects than more exotic -- and more expensive -- fungi such as oyster and shiitake mushrooms, Dr. Keith Martin of Arizona State University in Mesa and his colleagues found

Using a new, more sensitive-testing approach they developed for fungi, Penn State food scientists have found that mushrooms are a better natural source of the antioxidant ergothioneine than either of the two dietary sources previously believed to be best. The researchers found that white button mushrooms, the most commonly consumed kind in the U.S., have about 12 times more of the antioxidant than wheat germ and 4 times more than chicken liver, the previous top-rated ergothioneine sources based on available data. Until the Penn State researchers developed their testing approach, known as an assay, there was no method employing the most sensitive modern instrumentation and analytical techniques to quantify the amount of ergothioneine in fungi. The researchers say that their assay can be used for other plants, too, not just mushrooms.

White button mushrooms (Agaricus bisporus), although often considered a poor relation of exotic, expensive varieties like maitake and matsutake mushrooms, provide as much or even more anti-oxidant activity as their costly cousins. Researchers at the Institut National de la Recherche Agrinomique in France found that the free radical scavenging ability of the humble button mushroom was equivalent to, if not higher than, that of maitake and the matsutake mushrooms - both of which are highly prized in Japanese cuisine for their reputed ability to lower blood pressure and fight cancer.

White button mushroom phytochemicals inhibit aromatase activity and breast cancer cell proliferation. Grube BJ, Eng ET, Kao YC, Kwon A, Chen S. J Nutr. 2001 Dec;131(12):3288-93. PMID: 11739882

Anti-aromatase activity of phytochemicals in white button mushrooms (Agaricus bisporus). Chen S, Oh SR, Phung S, Hur G, Ye JJ, Kwok SL, Shrode GE, Belury M, Adams LS, Williams D. Cancer Res. 2006 Dec 15;66(24):12026-34. PMID: 17178902 doi: 10.1158/0008-5472.CAN-06-2206

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. n PMID: 19005974

The humble white button mushroom (Agaricus bisporus) has as much, and in some cases, more anti-oxidant properties than more expensive varieties.

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

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.

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.