Skoro nie przeczytałeś podesłanego artykułu to po co sie wypowiadasz jesli nie masz o czyms pojęcia?Chciałem zeby z tego rozwineła sie ciekawa rozmowa ale widać ze sie nei da podsylam kawalek art
Your body’s GH is regulated by many internal factors, such as hormones and enzymes. hormones. A change in the level of your body’s GH output begins in the hypothalamus with somatostatin (SS) and growth hormone-releasing hormone (GHRH). Somatostatin exerts its effect at the pituitary to decrease GH output, while GHRH acts at the pituitary to increase GH output. Together these hormones regulate the level of GH you have in your body. In many cases, GH deficiency presents with a low level of T3, and normal T4(4). This is of course because conversion of T4-T3 is partially dependant on GH (and to some degree GH stimulated IGF-1), and it’s ability to stimulate that conversion process of T4 into T3.
Interestingly, the hypothalamus isn’t the only place where SS is contained; the thyroid gland also contains Somatostatin-producing cells. This is of interest to us, because in the case of the thyroid, it’s been noted that certain hormones which were previously thought only to govern GH secretion can also influence thyroid hormone output as well. SS can directly act to inhibit TSH secretion or it may act on the hypothalamus to inhibit TRHsecretion. So when you add GH into your body from an outside source, you are triggering the body into releasing SS, because your body no longer needs to produce its own supply of GH…and unfortunately, the release of SS can also inhibit TSH, and therefore limit the amount of T4 your body produces.
But that’s not the only interaction we see between the thyroid and Growth Hormone.
As we learned in high-school Biology class, the body likes to maintain homeostasis, or “normal” operating conditions. This is the body’s version of the status quo, and it fights like hell to maintain the comfort of the status quo (much like moderators on most steroid discussion boards). What we see with thyroid/GH interplay is that physiological levels of circulating thyroid hormones are necessary to maintain normal pituitary GH secretion, due to their directly stimulatory actions. However, when serum concentrations of thyroid hormone increase above the normal range we see an increase in hypothalamic somatostatin action, which suppresses pituitary GH secretion and overrides any stimulatory effects that the thyroid hormone may have had on GH. The suppression of GH secretion by thyroid hormones is probably mediated at the hypothalamic level by a decrease in GHRH release(5).
As you can see, T3 levels are directly correlative to GH gene transcription. The scientists who conducted the study which provided the graph above concluded that the amount of T3 present is a regulatory factor on how much GH gene transcription actually occurs. And gene transcription is what actually gives us the effects from GH. This last fact really seems to shed some light on why we need T3 levels to be supraphysiological if we’re going to be using supraphysiological levels of GH, right? Otherwise, the GH we’re using is going to be limited by the amount of T3 our body produces. However, since we’re taking GH, and it is converting more T4 into
T3, T4 levels are lowered substantially, and this is the problem with GH. and may actually be THE limiting factor on GH…if we assume that at least some of GH’s effects are enhanced by thyroid hormone, and specifically T3, then what we are looking at is the GH that has been injected is being limited by a lack of T3. But that doesn’t make sense, because if we use T3 + GH, we get a decrease in the anabolic effect of GH.
Zmieniony przez - deluslysy w dniu 2016-11-20 16:10:01 
deluslysy
Krzysztof Piekarz
lodzianin1
