DES [1-3] IGF-1:
DES IGF-1 is an IGF-1 variant, and like IGF-1 LR3 mentioned above, it displays all the same characteristics as its cousin, such as the ability to cause muscle cell differentiation, the inhibition of muscle cell apoptosis, increased nutrient shuttling capacity, as well as anabolic & anti-catabolic effects. Structurally, DES differentiates itself from standard IGF-1, in that has been molecularly modified by cleaving 3 molecules from the IGF-1 chain. This results in a truncated form of IGF-1, which is almost 5X more potent than IGF-1 LR3 and a full 10X more potent than standard IGF-1.
That is not all. DES also has a very low affinity for binding proteins at only 1%, making DES an extremely usable form of IGF-1, while as much as 98% of standard IGF-1 will become bound to binding proteins and remain inactive, unavailable for use by skeletal muscle tissue. DES also has the ability to attach to lactic acid deformed receptor sites (during training, lactic acid build-up in muscle tissue can temporarily deform IGF-1 receptor sites, preventing IGF-1 from attaching to them during this period), allowing it to turn-on our muscle-building machinery during training.
The down-side to DES is that it possesses a relatively short half-life of about 20 minutes in length, compared to IGF-1 LR3, which will stay active for about a day. Because of the differences between the LR3 and DES versions of IGF-1, they are often used in different ways and for different purposes. One use for which DES has proven effective is in the area of site enhancement. Due to DES’s short active-life, the hormone will only circulate systematically for a relatively short period of time before becoming inactive. This means that the majority of DES’s active life will be spent at the injection site, affecting the target muscle to a greater degree in comparison to the rest of the body. Through DES’s impressive ability to stimulate muscle cell hyperplasia and combined with its potent anabolic activity, many users have reported significant and long-term changes in the size & shape of the treated muscle with regular use.
|20 micrograms per vial