A poster named ImmortalHair contributed the following at another forum. Evidence continues to mount for the use of curcumin to battle hair loss:
Curcumin inhibits Histamine Release from Mast Cells
Dermal fibrosis in male pattern hair loss: a suggestive implication of mast cells
Won CH, Kwon OS, Kim YK, Kang YJ, Kim BJ, Choi CW, Eun HC, Cho KH.
“A relationship has been suggested between mast cells (MCs) and male pattern hair loss (MPHL), because of histological evidence of perifollicular fibrosis and increased mast cell numbers. Two paired punch biopsies were taken from balding vertexes and non-balding occipital promontory areas of ten patients with MPHL (Ludwig-Hamilton IIIv to IV) and from five normal subjects aged from 20 to 35 years. Masson trichrome and Victoria blue staining were performed to observe collagen frameworks and elastic fiber structures. Numbers of immunoreactive MCs stained with anti-tryptase or anti-chymase antibody were counted. It was found that collagen bundles were significantly increased in balding vertexes than in non-balding occiput scalp skin. A near 4-fold increase in elastic fibers was observed in both vertex and occiput scalp skins with MPHL versus controls. Total numbers of MCs (tryptase-positive) in site-matched scalp samples were about 2-fold higher in MPHL subjects than in normal controls. Percentage elastic fiber (%) was found to be relatively well-correlated with tryptase and chymase-positive MCs. These findings suggest that accumulated MCs might be responsible for increased elastic fiber synthesis in MPHL, and indicate that future investigations are warranted.”
Department of Dermatology, Seoul National University College of Medicine, Chongno-Gu, Seoul, Republic of Korea.
Effects of Curcumin on Histamine Release from Mast Cells
Agung Endro Nugroho, Zullies Ikawati, and Kazutaka Maeyama
“Curcumin reportedly has anti-allergic effects and can inhibit the release of histamine from mast cells. In the present study, fourteen analogues of curcumin were studied for their effects on histamine release from rat basophilic leukemia (RBL-2H3) cells. After screening, four selected compounds: 2,5-bis(4-hydroxybenzylidene)cyclopentanone; 2,5-bis(4-hydroxy-3-methoxybenzylidene)cyclopentanone; 2,5-bis(4-hydroxy-3,5-dimethylbenzylidene) cyclopentanone; and 2,5-bis(4-hydroxy-3,5-diethylbenzylidene)cyclopentanone were studied for their concentration-dependent effects on histamine release and Ca2+ uptake. In RBL-2H3 cells and rat peritoneal mast cells stimulated with antigen or compound 48/80, respectively, the methoxy-hydroxy analogue was more potent than curcumin in inhibiting histamine release. In contrast, the inhibitory effects of methyl/ethyl analogues were less potent than those of curcumin. Moreover, these compounds abrogated histamine release induced by increased intracellular Ca2+ concentrations in response to stimulants such as thapsigargin and ionomycin. These compounds also showed potent inhibitory effects on 45Ca2+ uptake in RBL-2H3 cells. The mechanism of the inhibitory effects of these curcumin analogues on histamine release appeared to be related to blockade of Ca2+ signaling events. These results provide useful information to guide the development of new synthetic compounds for the treatment of allergic and inflammatory diseases related to histamine or mast cells.”
Department of Pharmacology, Informational Biomedicine, Ehime University Graduate School of Medicine
Department of Pharmacology and Clinical Pharmacy, Faculty of Pharmacy, Gadjah Mada University
Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Gadjah Mada University