SaulSilver
Holofractale de l'hypervérité
- Inscrit
- 11/10/13
- Messages
- 1 642
Non saprei dove altro metterlo, questa cit è veramente da incoronare. (Ron)
Dobbiamo guardarci dentro meglio sul fatto della Brunfelsia e delle cumarine in generale, le quali sono derivati di fenil-propeni.
La scopoletina non è esattamente come la scopolamina. Suonano simili, ma le molecole sono totalmente diverse.
Il mondo dell'investigazione sulle piante è ancora da investigare.
Unlike some, SWIM likes harmine AND HARMALINE. Harmaline is the “marijuana” of the harmala alkaloids. It’s great if you can’t sleep. It will fuck up your head and let you drift into sleep. It’s perfect for that. Harmine is the “coffee” of the harmala alkaloids. It tends to stimulate you a little bit and keep you from sleeping. Tetrahydroharmine is the “zen” of the harmalas. It’s pure bliss. It’s got none of the stoning of harmaline, none of the stimulant effects of harmine, but instead it gives you intense pleasurable tingling, and a pieceful blissful state of mind. AhhhSWIM can’t wait to try a higher dose
Dobbiamo guardarci dentro meglio sul fatto della Brunfelsia e delle cumarine in generale, le quali sono derivati di fenil-propeni.
La scopoletina non è esattamente come la scopolamina. Suonano simili, ma le molecole sono totalmente diverse.
Il mondo dell'investigazione sulle piante è ancora da investigare.
[h=3]Abstract[/h]β-Carboline alkaloids are the main chemical constituents of the plant Peganum harmala, while they also could be formed endogenously and found in coffee, alcoholic beverages and tobacco. Considering the fact that the possibility of herb-drug interactions has recently received great attention worldwide, the aim of the current study was to assess the potential for the metabolism-based drug-drug interactions arising from five β-carboline alkaloids (harmine, harmaline, harmalol, harmol and harmane) from P. harmala in vitro. With microsome incubation assays and UPLC/HPLC methods, the inhibitions on human liver CYP3A4 and CYP2D6 enzymes by those β-carboline alkaloids were studied kinetically. Harmine, harmol and harmane exhibited noncompetitive inhibition on the activity of CYP3A4 with K(i) values of 16.76, 5.13 and 1.66 μM, respectively. These β-carboline alkaloids were also found to be both substrates and inhibitors for CYP2D6. Harmaline, harmine and harmol showed typical competitive inhibition on the activity of CYP2D6 with K(i) values of 20.69, 36.48 and 47.11 μM, respectively. The inhibition of the two major CYP enzymes by those β-carboline alkaloids suggested that changes in the pharmacokinetics of co-administered drugs were likely to have occurred. Therefore, caution should be exercised for possible drug interactions of medicinal plants containing those β-carboline alkaloids and CYP substrates.