Comprehensive Library Of Resveratrol News

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  • Attention All Balding Males: Resveratrol To Your Rescue

    April 2, 2012: by Bill Sardi

    All balding males pay attention. Put two-and-two together here. Resveratrol is potentially a remedy for baldness. Researchers have found that balding scalp areas exhibit high levels of an inflammatory agent called prostaglandin D2 (PDG2). See the first reference posted below. PGD2 inhibitors would serve to preserve hair growth. Why wait for expensive medicines? Resveratrol strong suppresses PGD2 at low concentration, as evidenced in the second reference provided below. Maybe resveratrol pills should be sold with a comb. — Copyright 2012 Bill Sardi, ResveratrolNews.com


    Sci Transl Med. 2012 Mar 21;4(126):126ra34.

    Prostaglandin d2 inhibits hair growth and is elevated in bald scalp of men with androgenetic alopecia.

    Garza LA, Liu Y, Yang Z, Alagesan B, Lawson JA, Norberg SM, Loy DE, Zhao T, Blatt HB, Stanton DC, Carrasco L, Ahluwalia G, Fischer SM, Fitzgerald GA,Cotsarelis G.

    Source

    Department of Dermatology, Kligman Laboratories, University of Pennsylvania School of Medicine, Philadelphia, PA 19104, USA.

    Abstract

    Testosterone is necessary for the development of male pattern baldness, known as androgenetic alopecia (AGA); yet, the mechanisms for decreased hair growth in this disorder are unclear. We show that prostaglandin D(2) synthase (PTGDS) is elevated at the mRNA and protein levels in bald scalp compared to haired scalp of men with AGA. The product of PTGDS enzyme activity, prostaglandin D(2) (PGD(2)), is similarly elevated in bald scalp. During normal follicle cycling in mice, Ptgds and PGD(2) levels increase immediately preceding the regression phase, suggesting an inhibitory effect on hair growth. We show that PGD(2) inhibits hair growth in explanted human hair follicles and when applied topically to mice. Hairgrowth inhibition requires the PGD(2) receptor G protein (heterotrimeric guanine nucleotide)-coupled receptor 44 (GPR44), but not the PGD(2) receptor 1 (PTGDR). Furthermore, we find that a transgenic mouse, K14-Ptgs2, which targets prostaglandin-endoperoxide synthase 2 expression to the skin, demonstrates elevated levels of PGD(2) in the skin and develops alopecia, follicular miniaturization, and sebaceous gland hyperplasia, which are all hallmarks of human AGA. These results define PGD(2) as an inhibitor of hair growth in AGA and suggest the PGD(2)-GPR44 pathway as a potential target for treatment.

    PMID: 22440736


    Planta Med. 2004 Apr;70(4):305-9.

    Resveratrol inhibits the release of mediators from bone marrow-derived mouse mast cells in vitro.

    Baolin L, Inami Y, Tanaka H, Inagaki N, Iinuma M, Nagai H.

    Source

    Department of Pharmacology of Chinese Materia Medica, China Pharmaceutical University, Nanjing, P. R. China. NJLBL55@SOHU.com

    Abstract

    Resveratrol is a natural phytoalexin occurring in grapes, vines and peanuts and possesses both antitumor and antioxidation capabilities. Its chemoprotective actions are attributed partially to its anti-inflammation effect. The present study is aimed at checking the inhibitory actions ofresveratrol on the release of mediators from bone marrow-derived mouse mast cells (BMMC) in vitro. Mast cells were prepared by isolating bone marrow cells from intact mice femora and culturing them for 4 weeks in the presence of IL-3 and FCS. The release reaction was triggered by IgE or calcium ionophore (A23187). Mediated by IgE, the release of histamine and tumor necrosis factor-alpha was significantly inhibited by resveratrol at a concentration of 100 microM; IgE-mediated release of leukotrienes and prostaglandin D (2) was also strongly suppressed at concentrations of 100 and 10 microM. Also, A23187-mediated release of histamine and leukotrienes release was strongly reduced by resveratrol at concentrations of 100 and 10 microM, respectively. Resveratrol exhibited its behavior without a significant cytotoxic activity against mast cells. In conclusion, resveratrolis a potent non-selective inhibitor of mediator release from activated mast cells and deserves further investigation of its biological modulations.

    PMID: 15095144

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