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Serotonin

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141. Effect of serotonin transporter genotype on self-reported efficacy and activity changes of brain prefrontal area in response to placebo. (Abstract)

Effect of serotonin transporter genotype on self-reported efficacy and activity changes of brain prefrontal area in response to placebo. Patients benefit from drug therapy not only through pharmacological mechanisms, but also through non-pharmacological action (placebo effect), which may be mediated in part by the prefrontal area of the brain. We consider that the difference between responders and non-responders to placebo might be related to polymorphisms in the serotonin transporter-linked (...) placebo on the first day and placebo on the third day. After placebo administration, improvement of sleepiness was significantly enhanced, a similar extent to that after caffeine medication. Among the 42 subjects, 22 showed S/S type polymorphism in the serotonin transporter (52.4 %), 17 showed S/L type (40.5 %) and 3 showed L/L type (7.10 %). Statistical analysis of the results indicate that subjects with L/L genotype showed a significantly greater placebo response in terms of both self-reported

2018 Die Pharmazie Controlled trial quality: uncertain

142. Role of serotonin transporter and receptor gene variations in the acute effects of MDMA in healthy subjects. Full Text available with Trip Pro

Role of serotonin transporter and receptor gene variations in the acute effects of MDMA in healthy subjects. Methylenedioxymethamphetamine (MDMA; ecstasy) is used recreationally and has been investigated as an adjunct to psychotherapy. Most acute effects of MDMA can be attributed to activation of the serotonin (5-hydroxytryptamine [5-HT]) system. Genetic variants, such as single-nucleotide polymorphisms (SNPs) and polymorphic regions in 5-HT system genes, may contribute to interindividual (...) differences in the acute effects of MDMA. We characterized the effects of common genetic variants within selected genes that encode the 5-HT system (TPH1 [tryptophan 5-hydroxylase 1] rs1800532 and rs1799913, TPH2 [tryptophan 5-hydroxylase 2] rs7305115, HTR1A [5-HT1A receptor] rs6295, HTR1B [5-HT1B receptor] rs6296, HTR2A [5-HT2A receptor] rs6313, and SLC6A4 [serotonin transporter] 5-HTTLPR and rs25531) on the physiological and subjective response to 125 mg MDMA compared with placebo in 124 healthy

2018 ACS chemical neuroscience Controlled trial quality: uncertain

143. Inhibitory neurotransmitter serotonin and excitatory neurotransmitter dopamine both decrease food intake in Chinese perch (Siniperca chuatsi). (Abstract)

Inhibitory neurotransmitter serotonin and excitatory neurotransmitter dopamine both decrease food intake in Chinese perch (Siniperca chuatsi). Aminergic neurotransmitters play important roles in the regulation of food intake. However, their effects on feeding in fish have been less explored and still unclear. In the present study, the effects of serotonin (5-HT) and dopamine (DA) on food intake were evaluated through intraventricular (ICV) administration in Chinese perch (Siniperca chuatsi

2018 Fish physiology and biochemistry Controlled trial quality: uncertain

144. Effects of tryptophan depletion on selective serotonin reuptake inhibitor-remitted patients with obsessive compulsive disorder. (Abstract)

Effects of tryptophan depletion on selective serotonin reuptake inhibitor-remitted patients with obsessive compulsive disorder. Serotonergic antidepressants are first-line medication therapies for obsessive-compulsive disorder, however it is not known if synaptic serotonin availability is important for selective serotonin reuptake inhibitor efficacy. The present study tested the hypothesis that temporary reduction in central serotonin transmission, through acute tryptophan depletion, would (...) result in an increase in anxiety in selective serotonin reuptake inhibitor-remitted obsessive-compulsive disorder patients.Eight patients (four males) with obsessive-compulsive disorder who showed sustained clinical improvement with selective serotonin reuptake inhibitor treatment underwent acute tryptophan depletion in a randomized, double-blind, placebo-controlled, within-subjects design, over two days one week apart. Five hours after consumption of the depleting/sham drink the participants

2018 Journal of psychopharmacology (Oxford, England) Controlled trial quality: uncertain

145. Platelet Serotonin Aggravates Myocardial Ischemia/Reperfusion Injury via Neutrophil Degranulation. Full Text available with Trip Pro

Platelet Serotonin Aggravates Myocardial Ischemia/Reperfusion Injury via Neutrophil Degranulation. Platelets store large amounts of serotonin that they release during thrombus formation or acute inflammation. This facilitates hemostasis and modulates the inflammatory response.Infarct size, heart function, and inflammatory cell composition were analyzed in mouse models of myocardial reperfusion injury with genetic and pharmacological depletion of platelet serotonin. These studies were (...) complemented by in vitro serotonin stimulation assays of platelets and leukocytes in mice and men, and by measuring plasma serotonin levels and leukocyte activation in patients with acute coronary syndrome.Platelet-derived serotonin induced neutrophil degranulation with release of myeloperoxidase and hydrogen peroxide (H2O2) and increased expression of membrane-bound leukocyte adhesion molecule CD11b, leading to enhanced inflammation in the infarct area and reduced myocardial salvage. In patients

2018 Circulation

146. Serotonin transporter inhibition and 5-HT<sub>2C</sub> receptor activation drive loss of cocaine-induced locomotor activation in DAT Val559 mice. Full Text available with Trip Pro

Serotonin transporter inhibition and 5-HT2C receptor activation drive loss of cocaine-induced locomotor activation in DAT Val559 mice. Dopamine (DA) signaling dysfunction is believed to contribute to multiple neuropsychiatric disorders including attention-deficit/hyperactivity disorder (ADHD). The rare DA transporter (DAT) coding substitution Ala559Val found in subjects with ADHD, bipolar disorder and autism, promotes anomalous DA efflux in vitro and, in DAT Val559 mice, leads (...) to increased reactivity to imminent handling, waiting impulsivity, and enhanced motivation for reward. Here, we report that, in contrast to amphetamine and methylphenidate, which induce significant locomotor activation, cocaine administration to these mice elicits no locomotor effects, despite retention of conditioned place preference (CPP). Additionally, cocaine fails to elevate extracellular DA. Given that amphetamine and methylphenidate, unlike cocaine, lack high-affinity interactions with the serotonin

2018 Neuropsychopharmacology

147. Selective serotonin reuptake inhibitor use in hip fracture patients: a Danish nationwide prevalence study. Full Text available with Trip Pro

Selective serotonin reuptake inhibitor use in hip fracture patients: a Danish nationwide prevalence study. Background and purpose - Selective serotonin reuptake inhibitors (SSRIs) are often used in the elderly and are associated with adverse effects. Therefore, it is important to ascertain the prevalence of SSRI use in fragile and surgery-treated hip fracture patients. Methods - This population-based prevalence study included Danish hip fracture patients aged ≥ 65 years operated in 2006-2016 (n

2018 Acta Orthopaedica

148. Genotype-dependent associations between serotonin transporter gene (SLC6A4) DNA methylation and late-life depression. Full Text available with Trip Pro

Genotype-dependent associations between serotonin transporter gene (SLC6A4) DNA methylation and late-life depression. Disrupted serotonergic signaling is often a feature of depression and the role of the serotonin transporter gene (SLC6A4), responsible for serotonin re-uptake, has received much attention in this regard. Most studies have focused on the polymorphic 5-HTTLPR upstream repeat, or DNA methylation at the promoter CpG island. Few studies have explored the influence of genetic

2018 BMC Psychiatry

149. Polymorphisms in the human serotonin receptor 1B (HTR1B) gene are associated with schizophrenia: a case control study. Full Text available with Trip Pro

Polymorphisms in the human serotonin receptor 1B (HTR1B) gene are associated with schizophrenia: a case control study. Schizophrenia is associated with multiple neurotransmitter disorders, including serotonin (5-hydroxytryptamine, 5-HT). The neuromodulatory action of serotonin on brain function largely depends on the action of specific subtypes of serotonin receptors. The serotonin receptor 1B (HTR1B) gene has been proposed to play putative roles in the development of multiple emotional

2018 BMC Psychiatry

150. Apathy in rapid eye movement sleep behaviour disorder is associated with serotonin depletion in the dorsal raphe nucleus. Full Text available with Trip Pro

Apathy in rapid eye movement sleep behaviour disorder is associated with serotonin depletion in the dorsal raphe nucleus. Apathy is a common and under-recognized disorder that often emerges in the prodromal phase of Parkinsonian diseases. The mechanism by which this occurs is not known, but recent evidence from patients with established Parkinson's disease suggests that serotonergic dysfunction may play a role. The integrity of the raphe serotonergic system can be assessed alongside (...) dopaminergic basal ganglia imaging using the radioligand 123I-ioflupane, which binds both serotonin and dopamine transporters. To investigate the relative roles of these neurotransmitters in prodromal parkinsonism, we imaged patients with idiopathic rapid eye movement sleep behaviour disorder, the majority of whom will develop a parkinsonian disorder in future. Forty-three patients underwent brain imaging with 123I-ioflupane single photon emission computed tomography and structural MRI. Apathy

2018 Brain

151. Effect of Selective Serotonin Reuptake Inhibitor Use in Pregnancy on Emotional Health of Children. (Abstract)

Effect of Selective Serotonin Reuptake Inhibitor Use in Pregnancy on Emotional Health of Children. I read with interest the article by Lupattelli et al., "Effect of Time-Dependent Selective Serotonin Reuptake Inhibitor Antidepressants During Pregnancy on Behavioral, Emotional, and Social Development in Preschool-Aged Children,"1 which describes the effects of selective serotonin reuptake inhibitor (SSRI) use in pregnancy on mental health in offspring, in the March issue of the Journal

2018 Journal of the American Academy of Child and Adolescent Psychiatry

152. Effects of long-term high-fat food or methamphetamine intake and serotonin 2C receptors on reversal learning in female rhesus macaques. Full Text available with Trip Pro

Effects of long-term high-fat food or methamphetamine intake and serotonin 2C receptors on reversal learning in female rhesus macaques. Perseverative behavior has been highly implicated in addiction. Activation of serotonin 2C receptors (5-HT2CRs) attenuates cocaine and high caloric food intake, but whether a 5-HT2CR agonist can reduce high caloric diet (HCD) or methamphetamine (METH) intake and response perseveration remains unknown. Clarifying the role of 5-HT2CRs in these behaviors

2018 Neuropsychopharmacology

153. Effect of Methylenedioxymethamphetamine (MDMA) (Serotonin Release) on Fear Extinction

Effect of Methylenedioxymethamphetamine (MDMA) (Serotonin Release) on Fear Extinction Effect of Methylenedioxymethamphetamine (MDMA) (Serotonin Release) on Fear Extinction - Full Text View - ClinicalTrials.gov Hide glossary Glossary Study record managers: refer to the if submitting registration or results information. Search for terms x × Study Record Detail Saved Studies Save this study Warning You have reached the maximum number of saved studies (100). Please remove one or more studies before (...) adding more. Effect of Methylenedioxymethamphetamine (MDMA) (Serotonin Release) on Fear Extinction (MFE) The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. of clinical studies and talk to your health care provider before participating. Read our for details. ClinicalTrials.gov Identifier: NCT03527316 Recruitment Status : Not yet recruiting First Posted : May

2018 Clinical Trials

154. Serotonin Levels in Atopic Dermatitis Patients

Serotonin Levels in Atopic Dermatitis Patients Serotonin Levels in Atopic Dermatitis Patients - Full Text View - ClinicalTrials.gov Hide glossary Glossary Study record managers: refer to the if submitting registration or results information. Search for terms x × Study Record Detail Saved Studies Save this study Warning You have reached the maximum number of saved studies (100). Please remove one or more studies before adding more. Serotonin Levels in Atopic Dermatitis Patients The safety (...) ): Aya Ahmed Mohamed Abdelbary, Assiut University Study Details Study Description Go to Brief Summary: Atopic dermatitis (AD) is a chronic pruritic inflammatory skin disease of unknown aetiology. Global prevalence rates range from 1%-20%.AD is often worsened by stress and anxiety.Plasma levels of 5-HT were found to be positively correlated with the disease severity. Condition or disease Intervention/treatment Dermatologic Disease Diagnostic Test: Serum serotonin level Detailed Description: Atopic

2018 Clinical Trials

155. Prognostic and predictive biomarkers for somatostatin analogs, peptide receptor radionuclide therapy and serotonin pathway targets in neuroendocrine tumours. (Abstract)

Prognostic and predictive biomarkers for somatostatin analogs, peptide receptor radionuclide therapy and serotonin pathway targets in neuroendocrine tumours. Neuroendocrine tumours (NETs) are a heterogeneous group of neoplasms regarding their molecular biology, clinical behaviour, prognosis and response to therapy. Several attempts to establish robust predictive biomarkers have failed. Neither tissue markers nor blood borne ones have proven to be successful yet. Circulating tumour cells (CTCs

2018 Cancer Treatment Reviews

156. The effect of traditional Chinese medicine Zhike-Houpu herbal pair (ZKHPHP) on depressive behaviors and hippocampal serotonin 1A receptors in rats following chronic unpredictable mild stress (CUMS). (Abstract)

The effect of traditional Chinese medicine Zhike-Houpu herbal pair (ZKHPHP) on depressive behaviors and hippocampal serotonin 1A receptors in rats following chronic unpredictable mild stress (CUMS). Zhike-Houpu herbal pair (ZKHPHP) is a well-known Chinese medicine to treat gastrointestinal motility dysfunction. Recently, many researchers have found that some of the compounds of ZKHPHP such as meranzin hydrate and magnolol have antidepressant effects. However, little is known about

2018 Psychosomatic Medicine

157. Association between serotonin-norepinephrine reuptake inhibitors and acute angle closure: what is known? (Abstract)

Association between serotonin-norepinephrine reuptake inhibitors and acute angle closure: what is known? Serotonin-norepinephrine reuptake inhibitors are widely used antidepressants with a relatively safe profile. One of the complications associated with this group of drugs is acute angle closure. The mechanisms linking serotonin-norepinephrine reuptake inhibitors and acute angle closure are complex and may be interlinked with the effects of the drug on the inhibition of serotonin (...) and noradrenaline reuptake, as well as pseudo-anticholinergic effects, dopaminergic effects, and idiosyncratic reactions with the drug molecule in the eye. Individual characteristics, such as polymorphisms of the gene encoding the 2D6 subunit of cytochrome P450, may affect the metabolism of the serotonin-norepinephrine reuptake inhibitor, whereas the combination with other drugs may lead to an increased risk of iridocorneal angle closure and may further exacerbate other mechanisms. Improved knowledge

2018 Survey of Ophthalmology

158. Effect of Competitive and Non-competitive Exercise on Serotonin Levels in Adolescents with Various Levels of Internet Gaming Addiction Full Text available with Trip Pro

Effect of Competitive and Non-competitive Exercise on Serotonin Levels in Adolescents with Various Levels of Internet Gaming Addiction 30182008 2018 11 14 2251-6085 47 7 2018 Jul Iranian journal of public health Iran. J. Public Health Effect of Competitive and Non-competitive Exercise on Serotonin Levels in Adolescents with Various Levels of Internet Gaming Addiction. 1047-1049 Kang So-Hyung SH Dept. of Sports and Wellbeing, Arts & Sports, Hanyang University, Ansan-si, Korea. So Wi-Young WY

2018 Iranian journal of public health

159. The Roles of Serotonin in Decision-making under Social Group Conditions Full Text available with Trip Pro

The Roles of Serotonin in Decision-making under Social Group Conditions People in a social group often have to make decisions under conflict, for instance, to conform to the group or obey authority (subjects at higher social rank in the group). The neural mechanisms underlying how social group setting affects decision-making have largely remained unclear. In this study, we designed novel behavioral tests using food access priority and fear conditioning paradigms that captured decision-making (...) under conflict associated with social group environments in mice and examined the roles of serotonin (5-HT) on these processes. Using these behavioral tests, administration of the selective 5-HT reuptake inhibitor, which increased 5-HT transmission, was found to attenuate conflicts in decision-making that may be associated with human cases of social obedience and conformity in mice under group housing. The results suggest that 5-HT plays important roles in the regulation of individual behaviors

2018 Scientific reports

160. Serotonin concentration enhancers at clinically relevant doses reduce [11C]AZ10419369 binding to the 5-HT1B receptors in the nonhuman primate brain Full Text available with Trip Pro

Serotonin concentration enhancers at clinically relevant doses reduce [11C]AZ10419369 binding to the 5-HT1B receptors in the nonhuman primate brain The serotonin (5-HT) system plays an important role in the pathophysiology and treatment of several major psychiatric disorders. Currently, no suitable positron emission tomography (PET) imaging paradigm is available to assess 5-HT release in the living human brain. [11C]AZ10419369 binds to 5-HT1B receptors and is one of the most 5-HT-sensitive

2018 Translational psychiatry

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