interesting info, thanks for sharing this. so nootropics depot has some good stuff? ive tried other stuff from them and they have been inconsistent. one time i get good quality stuff that works, other times not at all. i questioned them but they were reluctant to deny any problems. otherwise good point you have to try so many types of brands and extracts to know the real deal and it sucks it will cost money :(
I've personally had pretty good results with Nootropics Depot and their sister company Ceretropic. Unfortunately, most of their stuff is simply out of my price range at the current moment. As an update, the Tibetan Cordyceps from Paradise Herbs is some garbage, easily the weakest out of all the extracts I've bought. On the way, I spent a few hours of a "busy" work day recently reading up on Cordyceps, and it seems that Cordyceps Militaris is far superior to cultivated Cordyceps Sinesis, both in Cordycepin content and in antioxidant potential:
Comparison of protective effects between cultured Cordyceps militaris and natural Cordyceps sinensis against oxidative damage.AbstractThe Chinese herb DongChong-XiaCao originating from Cordyceps sinensis is widely used as a traditional medicine in China for treatment of a wide variety of diseases. The extracts of Cordyceps sinensis (CSE) and Cordyceps militaris (CME) are well-known for their biological effects. In the present study, the antioxidant efficiency of CME and CSE in protecting lipid, protein, and low-density lipoprotein (LDL) against oxidative damage was investigated. CME and CSE showed weakly inhibitory effect on liposome oxidation, that of CME being superior to that of CSE. As for the protein oxidation model system, the inhibitory effect of CME on protein oxidation was inferior to that of CSE. CME and CSE at 1.0 mg/mL showed 50.5 and 67.1% inhibition of LDL oxidation, respectively. The contents of bioactive ingredients cordycepin and adenosine in CME are higher than those of CSE; however, both cordycepin and adenosine showed no significant antioxidant activity as determined by the Trolox equivalent antioxidant capacity method. Polyphenolic and flavonoid contents are 60.2 and 0.598 microg/mL in CME and 31.8 and 0.616 microg/mL in CSE, respectively, which may in part be responsible for their antioxidant activities. In addition, a polysaccharide present in CME and CSE displayed antioxidant activity, which suggested that the activity might be derived partly from polysaccharides of CME and CSE. The tendency to scavenge the ABTS(*)(+) free radical and the reducing ability of CME and CSE display concentration-dependent manners, suggesting that CME and CSE may be potent hydrogen donators. On the basis of the results obtained, the protective effects of CME and CSE against oxidative damage of biomolecules are a result of their free radical scavenging abilities.
With that in mind, I have the this cordyceps militaris extract from ebay coming in today, will report back on that. As an aside, and to keep this on topic, I've realized in what way my past mold exposure is probably messing with my brain regeneration efforts. The clavine type alkaloids, which are the most probable alkaloids in my brain as Aspergillus is the most probable mold type in question here, have numerous actions in the brain. It seems to be a hyperactivation and induced hypersensitivity of the presynaptic D2 receptors and D2-5HT2A heterodimer as well as the a1 adrenergic receptors:
Excessive activation of the D2 receptor is bad for neuroregeneration, as per the following abstract:
Striatal D2 receptors regulate dendritic morphology of medium spiny neurons via Kir2 channels AbstractStructural plasticity in the adult brain is essential for adaptive behaviors and is thought to contribute to a variety of neurological and psychiatric disorders. Medium spiny neurons of the striatum show a high degree of structural plasticity that is modulated by dopamine through unknown signaling mechanisms. Here, we demonstrate that over-expression of dopamine D2 receptors in medium spiny neurons increases their membrane excitability and decreases the complexity and length of their dendritic arbors. These changes can be reversed in the adult animal after restoring D2 receptors to wild-type levels, demonstrating a high degree of structural plasticity in the adult striatum. Increased excitability and decreased dendritic arborization are associated with down-regulation of inward rectifier potassium channels (Kir2.1/2.3). Down-regulation of Kir2 function is critical for the neurophysiological and morphological changes in vivobecause virally-mediated expression of a dominant negative Kir2 channel is sufficient to recapitulate the changes in D2 transgenic mice. These findings may have important implications for the understanding of basal ganglia disorders, and more specifically schizophrenia, in which excessive activation of striatal D2 receptors has long been hypothesized to be of pathophysiologic significance.
Although it seems to be a little more complicated than that (as everything), as simultaneous D2/D3 (possibly postsynaptic vs. presynaptic) actually increases dendrite arborization:
Dopamine D3 receptor-preferring agonists increase dendrite arborization of mesencephalic dopaminergic neurons via extracellular signal-regulated kinase phosphorylation.AbstractClinical improvements in Parkinson's disease produced by dopamine D3 receptor-preferring agonists have been related to their neuroprotective actions and, more recently, to their neuroregenerative properties. However, it is unclear whether dopamine agonists produce their neurotrophic effects by acting directly on receptors expressed by the mesencephalic dopaminergic neurons or indirectly on receptors expressed by astrocytes, via release of neurotrophic factors. In this study, we investigated the effects of the dopamine D3 receptor-preferring agonists quinpirole and 7-hydroxy-N,N-di-propyl-2-aminotetralin (7-OH-DPAT), as well as of the indirect agonist amphetamine, on dopaminergic neurons identified by tyrosine hydroxylase immunoreactivity (TH-IR). Experiments were performed on neuronal-enriched primary cultures containing less than 0.5% of astrocytes prepared from the mouse embryo mesencephalon. After 3 days of incubation, both quinpirole (1-10 microm) and 7-OH-DPAT (5-500 nm) dose-dependently increased the maximal dendrite length (P < 0.001), number of primary dendrites (P < 0.01) and [3H]dopamine uptake (P < 0.01) of TH-IR-positive mesencephalic neurons. Similar effects were observed with 10 microm amphetamine. All neurotrophic effects were blocked by the unselective D2/D3 receptor antagonist sulpiride (5 microm) and by the selective D3 receptor antagonist SB-277011-A at a low dose (50 nm). Quinpirole and 7-OH-DPAT also increased the phosphorylation of extracellular signal-regulated kinase (ERK) within minutes, an effect blocked by pretreatment with SB-277011-A. Inhibition of the D2/D3 receptor signalling pathway to ERK was obtained with PD98059, GF109203 or LY294002, resulting in blockade of neurotrophic effects. These data suggest that dopamine agonists increase dendritic arborizations of mesencephalic dopaminergic neurons via a direct effect on D2/D3 receptors, preferentially involving D3 receptor-dependent neurotransmission.