Phenylalanine hydroxylase contributes to serotonin synthesis in mice
- Biology, ChemistryFASEB journal : official publication of the Federation of American Societies for Experimental Biology
Evidence is provided by the gain and loss of function approaches in in vitro and in vivo systems, including stable‐isotope tracing in mice, that phenylalanine hydroxylase (PAH) is a third TPH in mammals and contributes to serotonin levels in the blood.
Inhibition of serotonin synthesis: A novel therapeutic paradigm.
- BiologyPharmacology & therapeutics
Life without brain serotonin: Reevaluation of serotonin function with mice deficient in brain serotonin synthesis
- Biology, ChemistryBehavioural Brain Research
Inhibition of Tryptophan Hydroxylases and Monoamine Oxidase-A by the Proton Pump Inhibitor, Omeprazole—In Vitro and In Vivo Investigations
- Biology, MedicineFrontiers in Pharmacology
The MAO-A inhibition afforded by high-dose omeprazole appears to overcome the opposing effect on 5-HT produced by inhibition of TPH1 and TPH2, and further modification of proton pump inhibitor scaffolds may yield more selective modulators of 5- HT metabolism.
Serotonergic neurotransmission manipulation for the understanding of brain development and function: Learning from Tph2 genetic models.
- Biology, PsychologyBiochimie
Tryptophan Hydroxylase as Novel Target for the Treatment of Depressive Disorders
The data which support TPH2 as novel drug target are summarized and strategies for its pharmacological exploitation are discussed.
Funktionelle Charakterisierung der humanen Tryptophanhydroxylase 2
- Biology, Chemistry
It was shown that T PH2 is not only expressed in the central nervous system but also in the testis and that TPH1 and 2 not only differ in their expression sites butAlso in their basic biochemical characteristics, and the expression of T PH1 mRNA was identified as a marker for endometrial cancer.
5‐HYDROXYTRYPTAMINE IN THE CARDIOVASCULAR SYSTEM: FOCUS ON THE SEROTONIN TRANSPORTER (SERT)
- BiologyClinical and experimental pharmacology & physiology
The function of SERT in the CV system is just beginning to be revealed, but includes modulation of cardiac and smooth muscle contractility, platelet aggregation, cellular mitogenesis, modulating neuronal activity and urinary excretion.
Stress inhibits tryptophan hydroxylase expression in a rat model of depression.
- Biology, PsychologyOncotarget
Stress was able to inhibit expression of TPH1/2 in brain tissue and decrease concentration of 5-HT, the mechanism maybe involve in increasing the methylation of T PH2 genes promoter; Paroxetine has a role in confronting the effect of stress in depressive rat model.
SHOWING 1-10 OF 90 REFERENCES
Eating disorder and epilepsy in mice lacking 5-HT2C serotonin receptors
- Biology, PsychologyNature
It is shown that 5-HT2C receptor-deficient mice are overweight as a result of abnormal control of feeding behaviour, establishing a role for this receptor in the serotonergic control of appetite.
Synthesis of Serotonin by a Second Tryptophan Hydroxylase Isoform
- Biology, PsychologyScience
The neurotransmitter serotonin [5-hydroxytryptamine (5-HT)] is causally involved in multiple central nervous facets of mood control and in regulating sleep, anxiety, alcoholism, drug abuse, food…
Melatonin Effects on Serotonin Synthesis and Metabolism in the Striatum, Nucleus Accumbens, and Dorsal and Median Raphe Nuclei of Rats
- BiologyNeurochemical Research
The pineal gland, through the secretion of melatonin, modulates the local metabolism of 5-HT in forebrain areas by acting on the oxidative deamination, and melatonin injected in pinealectomized rats derives in a more extended effect than pinealectomy and induces a stimulation of5-HT synthesis in the striatum, probably due to a pharmacological effect.
A study of 5-hydroxytryptamine formation from L-tryptophan in the brain and other tissues.
- Biology, ChemistryBiochemical pharmacology
Tryptophan hydroxylation in brain.
- Biology, ChemistryBiochemical and biophysical research communications
Suicidality and 5-hydroxyindoleacetic acid concentration associated with a tryptophan hydroxylase polymorphism.
- BiologyArchives of general psychiatry
In some individuals, a genetic variant of the TPH gene may influence 5-HIAA concentration in the cerebrospinal fluid and predisposition to suicidal behavior.
Increased anxiety of mice lacking the serotonin1A receptor.
- Biology, PsychologyProceedings of the National Academy of Sciences of the United States of America
It is hypothesize that an increased serotonergic neurotransmission is responsible for the anxiety-like behavior of receptor-deficient animals, consistent with earlier studies showing that pharmacological activation of the 5-HT system is anxiogenic in animal models and also in humans.
Pools of serotonin in the pineal gland of the mouse: The mammalian pinealocyte as a component of the diffuse neuroendocrine system
- BiologyCell and Tissue Research
The distribution of serotonin (5-HT) and its eventual relationships to a protein secretion were examined by means of fluorescence histochemical and ultracytochemical methods andYellow formaldehyde-induced fluorophores, characteristic of high concentrations of 5-HT, were found in pinealocytes, interstitial cells and sympathetic adrenergic nerve endings.
Evidence for involvement of protein kinases in the regulation of serotonin synthesis and turnover in the mouse brain in vivo
- Biology, ChemistryJournal of Neural Transmission
The results indicate that activation of tryptophan hydroxylase by reducing the tone from terminal 5-HT1B receptors involves PKA whereas the depolarisation-induced activation oftryptophansulfonamide involves CaM kinase II.
Further studies on tryptophan hydroxylase in rat brainstem and beef pineal.
- Biology, ChemistryBiochemical pharmacology