Hey guys.
Found this study interesting so thought I'd share:
The role and molecular mechanism of D-aspartic acid in the release and synthesis of LH and testosterone in humans and rats.
Topo E, Soricelli A, D'Aniello A, Ronsini S, D'Aniello G.
Source
1Stazione Zoologica Anton Dohrn, 80121, Villa Comunale, 80121, Napoli, Italy. EMAIL ADDRESS REMOVED
Abstract
BACKGROUND:
D-aspartic acid is an amino acid present in neuroendocrine tissues of invertebrates and vertebrates, including rats and humans. Here we investigated the effect of this amino acid on the release of LH and testosterone in the serum of humans and rats. Furthermore, we investigated the role of D-aspartate in the synthesis of LH and testosterone in the pituitary and testes of rats, and the molecular mechanisms by which this amino acid triggers its action.
METHODS:
For humans: A group of 23 men were given a daily dose of D-aspartate (DADAVIT) for 12 days, whereas another group of 20 men were given a placebo. For rats: A group of 10 rats drank a solution of either 20 mM D-aspartate or a placebo for 12 days. Then LH and testosterone accumulation was determined in the serum and D-aspartate accumulation in tissues. The effects of D-aspartate on the synthesis of LH and testosterone were gauged on isolated rat pituitary and Leydig cells. Tissues were incubated with D-aspartate, and then the concentration (synthesis) of LH and cGMP in the pituitary and of testosterone and cAMP in the Leydig cells was determined.
RESULTS:
In humans and rats, sodium D-aspartate induces an enhancement of LH and testosterone release. In the rat pituitary, sodium D-aspartate increases the release and synthesis of LH through the involvement of cGMP as a second messenger, whereas in rat testis Leydig cells, it increases the synthesis and release of testosterone and cAMP is implicated as second messenger. In the pituitary and in testes D-Asp is synthesized by a D-aspartate racemase which convert L-Asp into D-Asp. The pituitary and testes possesses a high capacity to trapping circulating D-Asp from hexogen or endogen sources.
CONCLUSION:
D-aspartic acid is a physiological amino acid occurring principally in the pituitary gland and testes and has a role in the regulation of the release and synthesis of LH and testosterone in humans and rats.
The dose wwas 3.1g administered in the morning.
It was found that the effects were cumulative as at day 6 Lh rose just above base levels but at day 12 LH was significantly higher. However, after just 3 days of not consuming DAA, LH returned to almost base levels.
The full stdy can be viewed here:
www.ncbi.nlm.nih.gov/pmc/articles/PMC2774316/?tool=pubmed
Hmm, wonder what it's effects would be on cycle to stave off testicular atrophy.
Topic Author
