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RitchieC said:I found it interesting that the implantable testosterone pellets are implanted Sub-Q.
RitchieC said:I found it interesting that the implantable testosterone pellets are implanted Sub-Q.
SPE said:Here is an interesting study on transdermal DHEA. From what I can tell, the dose used is something like 142 mg/day!
Physiological changes in dehydroepiandrosterone are not reflected by serum levels of active androgens and estrogens but of their metabolites: intracrinology.
Labrie F, Belanger A, Cusan L, Candas B.
Medical Research Council Group in Molecular Endocrinology, Centre Hospitalier de l'Universite Laval Research Center, Le Centre Hospitalier Universitaire de Quebec, Canada.
This study analyzes in detail the serum concentration of the active androgens and estrogens, as well as a series of free and conjugated forms of their precursors and metabolites, after daily application for 2 weeks of 10 mL 20% dehydroepiandrosterone (DHEA) solution on the skin to avoid first passage through the liver. In men, DHEA administration caused 175%, 90%, 200% and 120% increases in the circulating levels of DHEA and its sulfate (DHEA-S), DHEA-fatty acid esters, and androst-5-ene-3 beta,17 beta-diol, respectively, with a return to basal values 7 days after cessation of the 14-day treatment. Serum androstenedione increased by approximately 80%, whereas serum testosterone and dihydrotestosterone (DHT) remained unchanged. In parallel with the changes in serum DHEA, the concentrations of the conjugated metabolites of DHT, namely androsterone glucuronide, androstane-3 alpha,17 beta-diol-G, and androstane-3 beta,17 beta-diol-G increased by about 75%, 50%, and 75%, respectively, whereas androsterone-sulfate increased 115%. No consistent change was observed in serum estrone (E1) or estradiol (E2) in men receiving DHEA, whereas serum E1-sulfate and E2-sulfate were slightly and inconsistently increased by about 20%, and serum cortisol and aldosterone concentrations were unaffected by DHEA administration. Almost superimposable results were obtained in women for most steroids except testosterone, which was about 50% increased during DHEA treatment. This increase corresponded to about 0.8 nM testosterone, an effect undetectable in men because they already have much higher (approximately 15 nM) basal testosterone levels. In women, the serum levels of the conjugated metabolites of DHT, namely androsterone glucuronide, androstane-3 alpha,17 beta-diol-G, androstane-3 beta,17 beta-diol-G, and androsterone-sulfate were increased by 125%, 140%, 120% and 150%, respectively. The present study demonstrates that the serum concentrations of testosterone, DHT, E1, and E2 are poor indicators of total androgenic and estrogenic activity. However, the esterified metabolites of DHT appear as reliable markers of the total androgen pool, because they directly reflect the intracrine formation of androgens in the tissues possessing the steroidogenic enzymes required to transform the inactive precursors DHEA and DHEA-S into DHT. As well demonstrated in women, who synthesize almost all their androgens from DHEA and DHEA-S, supplementation with physiological amounts of exogeneous DHEA permits the biosynthesis of androgens limited to the appropriate target tissues without leakage of significant amounts of active androgens into the circulation. This local or intracrine biosynthesis and action of androgens eliminates the inappropriate exposure of other tissues to androgens and thus minimizes the risks of undesirable masculinizing or other androgen-related side effects of DHEA.
PMID: 9253308 [PubMed - indexed for MEDLINE]
frankwhardy said:Hi Dr. C,
Regarding the commercial standpoint, my thinking was that if the Depo-T or similar product can be marketed to the hypogonadal/HRT patient as an injection that need be given only once or twice a month versus once or twice a week then there might be a greater acceptance and hence better sales, since a lot of people are needle-adverse and it makes for fewer trips to the doctor's office (for those that don't want to self-inject).
I went ahead an initiated an experiment myself earlier today with my weekly T-cyp injection of 100mg (200mg/mL concentration). Using a 28 guage, 1/2" insulin syringe, I injected 0.5mL subQ at a 90-degree angle into pinched skin over the vastus lateralis. (I followed the guidelines regarding location and technique found here: http://www.cc.nih.gov/ccc/patient_education/pepubs/subq.pdf) The injection went very well with no blood or oozing of oil. Drawing the very viscous testosterone cottenseed oil took 3-4 minutes with the tiny gauge needle, but was not a problem. The injection did not leave a visible bump under the skin (although if I used my imagination I could possible see one), but one can feel a slightly raised area. Within seconds after the initially painless injection there began a very mild burning sensation, not present with intramuscular injections I've done, which persisted intermittently over nearly 2 hours, gradually diminishing. The burning sensation was similar to, but less than what one might experience with rubbing alcohol going into a tiny paper cut, and was mostly produced by movement/stetching of the skin with physical activity. I have no idea if the burning is due to the testosterone ester, the cottonseed oil, or the benzyl alcohol preservative (just guessing, probably the alcohol?).
I'll report back on my subjective experience regarding how the subQ injection compares to IM with regard to onset, duration and quality of action of the T (as best I can - it's been about 12 hours or so now since the injection and I really can't tell much difference between the subQ and the IM injections I've done previously at this point), but right now I'd say that IM is better, so far, simply because of the slight burning sensation that is apparently present with subQ - at least for me in my thigh area, anyway (it is essentially negligible, though, as was mentioned in the quoted earlier post I made). Having the reservoir of T-containing cottonseed oil so close the outer skin layer makes me feel a little "exposed" as well - I'm not sure what would happen if there were some kind of trauma to the area . . .
Frank
frankwhardy said:I think subQ is probably okay, though, as a method of administration and my impression was that it gives a more steady release of T, for what it's worth. There was no rise in E2, at least for the short time I tried subQ: Four days after a 100mg subQ injection, my E2 was 25 (forget the units right now), which was actually down from the original baseline value of 27. That's with no estrogen management.
frankwhardy said:Hi Larry,
I stopped doing the T-cypionate injections because they were actually making me feel worse for some reason - even though my baseline T levels were successfully elevated and my estrogens remained perfect (maybe too much depression of the HPA axis?)... but first I'm checking out some adrenal issues to make sure that that's not the primary problem for me.
Frank
frankwhardy said:Larry,
I'm thinking possibly that I'm more in the hypocortisolism area of adrenal problems. The T injections exacerbated my primary symptom of fatigue/tiredness/lack of energy, with the same pattern occurring over and over again with each weekly injection: starting a few hours after a T injection (100mg IM or subQ) I would begin feeling a little better but that would only last a few additional hours, and then by the next morning I would actually feel even more fatigued than my "normal" very fatigued baseline level that has plagued me for several years now. Over a period of 3 or 4 days after the injection my energy levels would then gradually recover back to baseline.
My understanding is that exogenous T can suppress the HPA axis, possibly by a number of different mechanisms, but the one that I remember is that the reduction in LH that occurs can apparently cause a reduction in P450scc activity, the enzyme that converts cholesterol into pregnenolone and the rate-limiting step for the production of cortisol. So I'm guessing that my cortisol levels were getting depressed by the T injections(?). I'm not sure if in that case HCG might possibly work better to boost my T levels, but in the meantime I've added DHEA (25mg/day), which has helped quite a bit with improving my sense of "well being," and I'm going to see what adding pregnenolone does as well (I'm hoping to raise my cortisol levels, especially in the morning, although I'm not sure how effective that exogeneous pregnenolone is in that regard).
Good luck with your NIH study.
Frank
frankwhardy said:Thanks, Larry. Yes, I saw an Endo a few days ago. He's wanting me off everything, including the testosterone (which I'd stopped anyway since it was seemingly making matters worse - at least in the form of T-cyp), for 3 months and then do bloodtesting to check baseline levels of everything at that point. On the lab slip that he gave me (to use in 3 months) he didn't check the box for 24 hr UFC and I'm tempted to go ahead and write it in myself and hope he won't remember not ordering it.
When I went in to see him I was actually initially thinking that I might be producing too much cortisol, but the Endo indicated that I just didn't have the bodily features of someone with Cushing's (i.e., no fatty hump between the shoulders, or round face, etc.). My blood pressure also runs on the normal to low side. I do have what has become a permanently reddened face and neck (what for me would pass as a tan - except that I never get any sun exposure), and so the Endo is thinking a hypocortisol situation, if anything. Do you have the classic hypercortisolism signs?
This hormonal business is very tricky because many of the exact same symptoms can be caused by either of an excess or a deficiency of the very same hormone.
Frank
1cc said:This is interesting. I was not aware that the pellets were SubQ. One of the main reasons for using pellets is for more even release of T as well as much less aromatization. If the pellets are SubQ, one would think it would cause more aromatisation. If less aromatization occurs from SubQ pellets, then what would be the difference if one injected T SubQ.
One of Dr. Shippen's patients per an earlier post is instructed to do T Cyp SubQ E3D and claims the benefits are more even release as well as LESS aromatization.
Does anyone have anymore information or thoughts about this?
Yes.. i know a couple of guys on Pellets and they are having no problems at all with Estrogen. The very stable levels of T seem to make them feel much more consistent.1cc said:This now seems to make more sense considering that the following studies seem to indicate that it is the large area of skin that T Gels/Creams are applied to that determines how much of it will be converted to Estrogen or DHT. The smaller the area of Skin, the less is converted to Estrogen and DHT.
In the case of SubQ T injections, it is injected into a tiny spot under the skin and is released slowly, which seems to me to be exactly how pellets work, and pellets are known for the least conversion to Estrogen.
Here are some more studies that seem to suggest that a smaller application area for Testosterone Gel/Cream should lead to lower DHT and Estrogen conversion.
https://thinksteroids.com/community/posts/450206
definitely keep us update on your progress1cc said:According to this post Dr. Shippen has his patients do SubQ T Cyp injections every 3 days. This would play a big part in further stabilising the T blood levels, and the fact that it's SubQ makes it a lot easier to deal with. A lot of body builders already do T Cyp shots IM every 3 days in order to stabilise their blood levels. I recently switched to T Cyp shots every 3 days and am considering doing the shots SubQ. My initial concern was excess aromatization, but this is starting to look more and more unlikely, and rather the opposite may be true.
https://thinksteroids.com/community/posts/441001