Serotonin activation was our topic on 19 April 2014; it’s serotonin life sciences today with the precursor 5-HTP (5-hydroxytryptophan) in highlight.
Below are four (brief) science stories from the National Institutes of Health (PubMed). Shortened titles should suffice to suggest the main themes: Therapeutic 5-HTP, Hot Flash and Breast Cancer Reduction, Irritable Bowels, and Morphine’s Efficacy. The links and quotes are from PubMed (1998-2014).
Healthy Solstice Everyone!
Therapeutic 5-HTP Has Been Shown … (1998)
“5-Hydroxytryptophan (5-HTP) is the intermediate metabolite of the essential amino acid L-tryptophan (LT) in the biosynthesis of serotonin. Intestinal absorption of 5-HTP does not require the presence of a transport molecule, and is not affected by the presence of other amino acids; therefore it may be taken with meals without reducing its effectiveness. … Therapeutic administration of 5-HTP has been shown to be effective in treating a wide variety of conditions, including depression, fibromyalgia, binge eating associated with obesity, chronic headaches, and insomnia.”
5-Hydroxytryptophan: a clinically-effective serotonin precursor.
Altern Med Rev. 1998 Aug;3(4):271-80. Review.
PMID: 9727088 [PubMed - indexed for MEDLINE] Free Article
Hot Flash (and Breast Cancer) Reduction: a hypothesis (2005)
“This would be particularly desirable for menopausal women with breast cancer or with risks of breast cancer. This article discusses the background information on hot flashes, SSRIs, tryptophan, and 5HTP, and possible clinical application of 5HTP for menopausal women with breast cancer risk.”
The potential of 5-hydryoxytryptophan for hot flash reduction: a hypothesis.
Curcio JJ, Kim LS, Wollner D, Pockaj BA.
Altern Med Rev. 2005 Sep;10(3):216-21.
PMID: 16164376 [PubMed - indexed for MEDLINE] Free Article
A Serotonin-mediated Mechanism in Bowels (2014)
“Oral 5-HTP induced alterations in mucosal 5-HT metabolism. In healthy controls, a reinforcement of the intestinal barrier was seen whereas such reaction was absent in IBS [irritable bowel syndrome] patients. This could indicate the presence of a serotonin-mediated mechanism aimed to reinforce intestinal barrier function, which seems to dysfunction in IBS patients.”
Serotonergic reinforcement of intestinal barrier function is impaired in irritable bowel syndrome.
Keszthelyi D, Troost FJ, Jonkers DM, van Eijk HM, Lindsey PJ, Dekker J, Buurman WA, Masclee AA.
Aliment Pharmacol Ther. 2014 Jun 18. doi: 10.1111/apt.12842. [Epub ahead of print]
PMID: 24943480 [PubMed - as supplied by publisher]
Serotonin and Morphine’s Efficacy (2014)
“Systemic administration of morphine increases 5-HT levels in the spinal cord, and the increase in 5-HT contributes to morphine-induced analgesia in the normal state but attenuates that in neuropathic pain through spinal 5-HT3 receptors. The plasticity of the descending serotonergic system may contribute to the reduced efficacy of systemic morphine in neuropathic pain.”
Peripheral Nerve Injury Reduces Analgesic Effects of Systemic Morphine via Spinal 5-Hydroxytryptamine 3 Receptors.
Kimura M, Obata H, Saito S.
Anesthesiology. 2014 Jun 2. [Epub ahead of print]
PMID: 24887968 [PubMed - as supplied by publisher]
5HTP benefit and side effects of 5htp, dosage, anxiety, weight loss, sleep
BONUS VIDEO: Serotonin/Binaural Beats
5-HTP secretion for happiness binaural beats, intensity WARNING
~ Posted by Bryan W. Brickner ~