19-04-2017, 01:10
(15-01-2016, 00:38)Lotus Wrote: Here's an example of what how interactions can happen, multiplying its effects. Say you drink green tea (a CYP17 inhibitor of testosterone). Now because you add piperine (in certain supplements, or added by supplementing) it increases the EGCG (polyphenols) in green tea by 1.3 fold.
J Nutr. 2004 Aug;134(8):1948-52.
Piperine enhances the bioavailability of the tea polyphenol (-)-epigallocatechin-3-gallate in mice.
Lambert JD1, Hong J, Kim DH, Mishin VM, Yang CS.
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Abstract
(-)-Epigallocatechin-3-gallate (EGCG), from green tea (Camellia sinensis), has demonstrated chemopreventive activity in animal models of carcinogenesis. Previously, we reported the bioavailability of EGCG in rats (1.6%) and mice (26.5%). Here, we report that cotreatment with a second dietary component, piperine (from black pepper), enhanced the bioavailability of EGCG in mice. Intragastric coadministration of 163.8 micromol/kg EGCG and 70.2 micromol/kg piperine to male CF-1 mice increased the plasma C(max) and area under the curve (AUC) by 1.3-fold compared to mice treated with EGCG only. Piperine appeared to increase EGCG bioavailability by inhibiting glucuronidation and gastrointestinal transit. Piperine (100 micromol/L) inhibited EGCG glucuronidation in mouse small intestine (by 40%) but not in hepatic microsomes. Piperine (20 micromol/L) also inhibited production of EGCG-3"-glucuronide in human HT-29 colon adenocarcinoma cells. Small intestinal EGCG levels in CF-1 mice following treatment with EGCG alone had a C(max) = 37.50 +/- 22.50 nmol/g at 60 min that then decreased to 5.14 +/- 1.65 nmol/g at 90 min; however, cotreatment with piperine resulted in a C(max) = 31.60 +/- 15.08 nmol/g at 90 min, and levels were maintained above 20 nmol/g until 180 min. This resulted in a significant increase in the small intestine EGCG AUC (4621.80 +/- 1958.72 vs. 1686.50 +/- 757.07 (nmol/g.min)). EGCG appearance in the colon and the feces of piperine-cotreated mice was slower than in mice treated with EGCG alone. The present study demonstrates the modulation of the EGCG bioavailablity by a second dietary component and illustrates a mechanism for interactions between dietary chemicals.
http://www.ncbi.nlm.nih.gov/pubmed?filte...%5Bauth%5D
(09-01-2016, 04:52)Lotus Wrote: Hi BN,
Here's a new idea to try...........citrus for breast growth (I'll explain). Three key enzymes (cyp 17, cyp 19, cyp 3A4) have direct pathways to breast/androgen synthesis. Cyp 3A4 controls more than 50% of how drugs are metabolized (I'd say that's a major regulator to piggy back off of), the only only issue there is mapping out all these key regulators, (it's like mapping out the genome).
Example: star fruit inhibits CY3A, more potent than grapefruit, ((which if you didn't notice, inhibiting CY3A4 will help with breast growth)).
Potent inhibition by star fruit of human cytochrome P450 3A (CYP3A) activity.
Hidaka M1, Fujita K, Ogikubo T, Yamasaki K, Iwakiri T, Okumura M, Kodama H, Arimori K.
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Abstract
There has been very limited information on the capacities of tropical fruits to inhibit human cytochrome P450 3A (CYP3A) activity. Thus, the inhibitory effects of tropical fruits on midazolam 1'-hydroxylase activity of CYP3A in human liver microsomes were evaluated. Eight tropical fruits such as common papaw, dragon fruit, kiwi fruit, mango, passion fruit, pomegranate, rambutan, and star fruit were tested. We also examined the inhibition of CYP3A activity by grapefruit (white) and Valencia orange as controls. The juice of star fruit showed the most potent inhibition of CYP3A. The addition of a star fruit juice (5.0%, v/v) resulted in the almost complete inhibition of midazolam 1'-hydroxylase activity (residual activity of 0.1%). In the case of grape-fruit, the residual activity was 14.7%. The inhibition depended on the amount of fruit juice added to the incubation mixture (0.2-6.0%, v/v). The elongation of the preincubation period of a juice from star fruit (1.25 or 2.5%, v/v) with the microsomal fraction did not alter the CYP3A inhibition, suggesting that the star fruit did not contain a mechanism-based inhibitor. Thus, we discovered filtered extracts of star fruit juice to be inhibitors of human CYP3A activity in vitro.
PMID: 15155547 [PubMed - indexed for MEDLINE] Free full text
Here's what I'm thinking, tropicial fruits blocks the androgen pathway, like the enzyme CYP 17 does (inhibit androgen)........and, cyp 19 (is an aromatase promoter).
Inhibit CYP3A4
Inhibit CYP17
induce CYP19
In think incorporating a tropical fruit (call it a lotion?) massage, also adding a polyphenol (green tea extract, androgen inhibitor for max potential). Oral intake will still be the biggest bang though.
Anyways, with help from the one fella, I've got a head start on some of the enzymes (call them coregulators) mapped out. I'll post asap.
This is exciting stuff no? Who knew fruits would prove to be pro breast growth, and a healthy approach too.
(03-03-2016, 05:16)Lotus Wrote: This is worth mentioning again,
Lemons inhibit CYP3A4, and @ 60%?.......,,,,,,,,its pro breast growth.
Application to drug-food interactions of living cells as in vitro model expressing cytochrome P450 activity: enzyme inhibition by lemon juice.
Baltes MR1, Dubois JG, Hanocq M.
Author information
Abstract
Classical inhibitors of human cytochrome P450 3A4 activity, such as ketoconazole and quercetin, are tested to prove the efficiency of a new metabolisation model using living entire cells. Grapefruit juice is a well-known potent inhibitor of cytochrome P450 3A4 activity. With regard to the clinical relevance of grapefruit juice-drug interactions, an investigation of other common juices is undertaken with this in vitro model. The CYP3A4 activity is measured by the formation of the 6beta-hydroxytestosterone, which is quantified by an isocratic high performance liquid chromatography. It is demonstrated for the first time that lemon juice significantly inhibits by 60+/-3% the CYP3A4-mediated oxidation. Grapefruit juice inhibits this activity by 82+/-4%. The mechanism of lemon juice inhibition is competitive, whereas it is mixed for grapefruit juice. These results suggest that our in vitro model combined with our analytical method is applicable for the investigation of the inhibition of CYP3A4 not only by chemical inhibitors but also by natural food products.
Whole Lemons are fairly inexpensive, in drinks or on food.....lemons boost the NBE/Hrt blood levels by the CYP3A4 enzyme pathway.......meaning most the drugs in your medicine cabinet.