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Taurine

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Taurine

Unread postby iull1k » Mon Feb 11, 2019 12:21 am

Taurine elevates dopamine levels in the rat nucleus accumbens; antagonism by strychnine.

The mesolimbic dopamine (DA) system, projecting from the ventral tegmental area (VTA) to the nucleus accumbens (nAcc), is involved in reward-related behaviours and addictive processes, such as alcoholism and drug addiction. It was recently suggested that strychnine-sensitive glycine receptors (GlyR) in the nAcc regulate both basal and ethanol-induced mesolimbic DA activity via a neuronal loop involving endogenous activation of nicotinic acetylcholine receptors (nAChR) in the VTA. However, as the nAcc appears to contain few glycine-immunoreactive cell bodies or fibres, the question as to what may be the endogenous ligand for GlyRs in this brain region remains open. Here we have investigated whether the amino acid taurine could serve this purpose using in vivo microdialysis in awake, freely moving male Wistar rats. Local perfusion of taurine (1, 10 or 100 mm in the perfusate) increased DA levels in the nAcc. The taurine (10 mm)-induced DA increase was, similarly to that previously observed after ethanol, completely blocked by (i) perfusion of the competitive GlyR antagonist strychnine in the nAcc, (ii) perfusion of the nAChR antagonist mecamylamine (100 microm) in the VTA, and (iii) systemic administration of the acetylcholine-depleting drug vesamicol (0.4 mg/kg, i.p). The present results suggest that taurine may be an endogenous ligand for GlyRs in the nAcc and that the taurine-induced elevation of DA levels in this area, similarly to that observed after local ethanol, is mediated via a neuronal loop involving endogenous activation of nAChRs in the VTA.


"It has been demonstrated that taurine is abundant in male reproductive organs, and can be biosynthesized by testis, but the taurine concentration will reduce with aging. The levels of serum LH, T, NOS, and NO were found to be obviously increased by taurine supplementation in aged rats in our previous study. In addition, aging will result in a significant decline in sexual response and function, which may be attributed to the androgen deficiency. Furthermore, NO has been proposed as a crucial mediator of penile erection. That makes us hypothesize that there is potential relationship between taurine decline and erection dysfunction in aged males.."

Glutamate, GABA, glycine and taurine modulate serotonin synthesis and release in rostral and caudal rhombencephalic raphe cells in primary cultures.

Control of serotonin release and synthesis by amino acid neurotransmitters was investigated in rat rostral and caudal rhombencephalic raphe cells in primary cultures respectively. Endogenous amounts of taurine, glycine, GABA and glutamate were measured in both types of cultures. These amino acids were spontaneously released to the incubating medium. Exogenous taurine (10(-4) M) inhibited release and synthesis of newly formed [3H]serotonin [3H]5-HT from [3H]-tryptophan only in rostral raphe cells. Glycine (10(-3) M) decreased [3H]5-HT release in both types of cells, synthesis being diminished only in rostral raphe cells. Glycine inhibitory effect was totally blocked by strychnine (5 x 10(-5) M). GABA (10(-4) M) reduced [3H]5-HT metabolism in rostral as well as caudal raphe cells. This effect was totally antagonized in caudal and partially in rostral raphe cells by bicuculline (5 x 10(-5) M) a GABAA receptor antagonist. Baclofen (5 x 10(-5) M), a GABAB receptor agonist, induced a decrease of 5-HT release in rostral raphe cells. These observations suggest that monoamine release was entirely mediated by GABAA receptors in caudal raphe cells although GABAA and GABAB receptors were involved in control of 5-HT metabolism in rostral raphe cells. L-glutamate (10(-4) M) stimulated 5-HT metabolism in both types of cells, effect totally blocked by PK26124 (10(-6) M). N-methyl-D-aspartate (10(-4) M) enhanced 5-HT metabolism and the induced-effect was antagonized by the selective N-methyl-D-aspartate receptor antagonist D,L-2 amino-5-phosphonovaleric acid. Quisqualate (10(-5) M) stimulated [3H]5-HT release only in caudal raphe cells.


Taurine has been studied in doses of 1 to 6 g/day.
Contraindications have not been identified.
No adverse events have been noted
It's cheap.

https://www.ebay.com/itm/TAURINE-L-TAUR ... :rk:2:pf:0
https://www.ebay.com/itm/500g-Taurine-1 ... :rk:4:pf:0


I found these stuedies very interesting. It's amazing how tied up are dopamine, serotonine, GABA and all aminoacids.

Who tried and in which dosages?
iull1k
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Re: Taurine

Unread postby Dryed » Mon Feb 11, 2019 1:50 am

There's a guy on propeciahelp who claim improvements from taurine but he also take some tribulus wich mess significantly with androgens and this is something to avoid
To pathei mathos
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Re: Taurine

Unread postby ncsugrad » Wed Feb 13, 2019 9:50 am

I've seen conflicting reports on Tribulus, but tapering slowly on/off a few times does seem to help some people, but has also made some worse.. thus the reason I haven't tried it

Taurine does seem to be helping some people though, I may give that a shot one day soon
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