
Evodiamine inhibits adipogenesis via the EGFR-PKCalpha-ERK signaling pathway.
Wang T, Wang Y, Yama****a H.
Source
Department of Biomedical Sciences, College of Life and Health Sciences, Chubu University, Kasugai 487-8501, Japan.
Abstract
The molecular mechanism of the anti-adipogenic effect of evodiamine (which has several capsaicin-like pharmacological actions) was investigated. The evodiamine effect was not blocked by the specific TRPV1 antagonist capsazepine in 3T3-L1 preadipocytes, whereas its effect was greatly curtailed by inhibitors of protein kinase C (PKC) and epidermal growth factor receptor (EGFR). Signal analyses showed that evodiamine stimulated the phosphorylation of EGFR, PKCalpha, and ERK, all of which were reduced by an EGFR inhibitor. Silencing experiments of EGFR mRNA supported the involvement of these signaling molecules in the inhibitory effect of evodiamine. An unidentified mechanism whereby evodiamine inhibits adipogenesis via the EGFR-PKCalpha-ERK signaling pathway was revealed.
PMID:
19854188
[PubMed - indexed for MEDLINE]
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Activation of TRPV1 and TRPA1 by black pepper components.
Okumura Y, Narukawa M, Iwasaki Y, Ishikawa A, Matsuda H, Yoshikawa M, Watanabe T.
Source
Graduate School of Nutritional and Environmental Sciences, University of Shizuoka, Shizouka, Japan.
Abstract
We searched in this study for novel agonists of transient receptor potential cation channel, subfamily V, member 1 (TRPV1) and transient receptor potential cation channel, subfamily A, member 1 (TRPA1) in pepper, focusing attention on 19 compounds contained in black pepper. Almost all the compounds in HEK cells heterogeneously expressed TRPV1 or TRPA1, increased the intracellular Ca(2+) concentration ([Ca(2+)](i)) in a concentration-dependent manner. Among these, piperine, isopiperine, isochavicine, piperanine, pipernonaline, dehydropipernonaline, retrofractamide C, piperolein A, and piperolein B relatively strongly activated TRPV1. The EC(50) values of these compounds for TRPV1 were 0.6-128 microM. Piperine, isopiperine, isochavicine, piperanine, piperolein A, piperolein B, and N-isobutyl-(2E,4E)-tetradeca-2,4-diamide also relatively strongly activated TRPA1, the EC(50) values of these compounds for TRPA1 were 7.8-148 microM. The Ca(2+) responses of these compounds for TRPV1 and TRPA1 were significantly suppressed by co-applying each antagonist. We identified in this study new transient receptor potential (TRP) agonists present in black pepper and found that piperine, isopiperine, isochavicine, piperanine, piperolein A, and piperolein B activated both TRPV1 and TRPA1.
PMID:
20460725
[PubMed - indexed for MEDLINE]
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Any Raspberry Ketones involved as well?
PASSION...what separates you from being a shadow in the crowd or the one casting a shadow over the crowd.
Few more weeks.
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Well I can only say that from what I am reading Vanillean doesn't have any of the "usual suspects". Sounds anything but "Vanilla" to me!
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I cannot wait for this to release! The anticipation is killing me.
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Now that right there is an endorsement you can believe in. You shoot straight yourself and are extremely knowledgeable so your opinion is taken in high regard!
I am ready for it too! As Ouffiny mentioned we are just as excited as anyone else to find out exactly what it is and they science behind it.
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Little more info since the release is very near.
A dietary agonist of transient receptor potential cation channel V3 elicits endothelium-dependent vasodilation.Earley S, Gonzales AL, Garcia ZI.
Source
Department of Biomedical Sciences, Colorado State University, Fort Collins, CO 80523-1680, USA. scott.earley@colostate.edu
Abstract
The Mediterranean diet may be responsible for lower cardiovascular disease rates in Southern versus Northern European countries. Oregano is used abundantly in Mediterranean cooking, but potential cardiovascular benefits have not been investigated. Carvacrol, present in oregano, activates the transient receptor potential (TRP) cation channels TRPA1 and TRPV3. We hypothesized that chemosensing of this dietary molecule by TRP channels in the endothelium promotes arterial relaxation. TRPA1 and TRPV3 were detected in the endothelium of intact arteries. Carvacrol causes concentration-dependent increases in the intracellular [Ca(2+)] of native cerebral artery endothelial cells and is more potent (EC(50) = 34 microM) than the TRPA1 agonist allyl isothiocyanate (EC(50) = 400 microM) or the TRPV3 agonist eugenol (EC(50) = 2.3 mM). Carvacrol also activates TRPV3-like cation currents in cerebral artery endothelial cells. Carvacrol elicits vasodilation of intact cerebral arteries (EC(50) = 4.1 microM) that is accompanied by smooth muscle hyperpolarization and a decrease in the intracellular [Ca(2+)] of arterial myocytes. Endothelium disruption inhibits carvacrol-induced vasodilation, but block of nitric-oxide synthase and cyclooxygenase activity does not alter the response. Vasodilation in response to carvacrol is inhibited when blockers of Ca(2+)-activated K(+) channels are present in the lumen or when the inwardly rectifying K(+) channel blocker BaCl(2) is present in the superfusion bath. Carvacrol-induced dilation is not diminished by a TRPA1 antagonist but is inhibited by the TRPV blocker ruthenium red. Our findings show that oregano can relax arteries by activating TRPV3 channels in the endothelium. This effect may account for some of the cardioprotective effects of the Mediterranean diet.
PMID:
20086034
[PubMed - indexed for MEDLINE]
PMCID:
PMC2845943
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So evodiamine and an oregano extract? Did I read that right?
If my direct and cynical approach bothers you, just ignore it. I'm just saying what you need to hear ;).
I assume Vanillalean will replace combustion
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That and we have something in the works to really Zapp appetite away.
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Does this appetite suppressant act synergestically with VanillaLean?
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GDI... I want MOAR info on ALL the products on the horizon! Guy, BPS is teasing us just as much as ya'll...
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