International Journal of Neuropsychopharmacology最新文献

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Placebo Effects Are Small on Average in the 7.5% CO2 Inhalational Model of Generalised Anxiety 在 7.5% 二氧化碳吸入性广泛焦虑模型中,安慰剂效应平均较小
IF 4.8 2区 医学
International Journal of Neuropsychopharmacology Pub Date : 2024-04-05 DOI: 10.1093/ijnp/pyae019
Nathan T M Huneke, Cosmina Cross, Harry A Fagan, Laura Molteni, Naomi Phillips, Matthew Garner, David S Baldwin
{"title":"Placebo Effects Are Small on Average in the 7.5% CO2 Inhalational Model of Generalised Anxiety","authors":"Nathan T M Huneke, Cosmina Cross, Harry A Fagan, Laura Molteni, Naomi Phillips, Matthew Garner, David S Baldwin","doi":"10.1093/ijnp/pyae019","DOIUrl":"https://doi.org/10.1093/ijnp/pyae019","url":null,"abstract":"Background Anxiety disorders are highly prevalent and socio-economically costly. Novel pharmacological treatments for these disorders are needed as many patients do not respond to current agents or experience unwanted side-effects. However, a barrier to treatment development is the variable and large placebo response rate seen in trials of novel anxiolytics. Despite this, the mechanisms that drive placebo responses in anxiety disorders have been little investigated, possibly due to low availability of convenient experimental paradigms. We aimed to develop and test a novel protocol for inducing placebo anxiolysis in the 7.5% CO2 inhalational model of generalised anxiety in healthy volunteers. Methods Following a baseline 20-minute CO2 challenge, 32 healthy volunteers were administered a placebo intranasal spray labelled as either the anxiolytic ‘lorazepam’ or ‘saline’. Following this, participants surreptitiously underwent a 20-minute inhalation of normal air. Post-conditioning, a second dose of the placebo was administered, after which participants completed another CO2 challenge. Results Participants administered sham ‘lorazepam’ reported significant positive expectations of reduced anxiety (p = 0.001) but there was no group-level placebo effect on anxiety following CO2 challenge post-conditioning (p’s > 0.350). Surprisingly, we found many participants exhibited unexpected worsening of anxiety, despite positive expectations. Conclusions Contrary to our hypothesis, our novel paradigm did not induce a placebo response, on average. It is possible that effects of 7.5% CO2 inhalation on prefrontal cortex function, or behaviour in line with a Bayesian predictive coding framework, attenuated the effect of expectations on subsequent placebo response. Future studies are needed to explore these possibilities.","PeriodicalId":14134,"journal":{"name":"International Journal of Neuropsychopharmacology","volume":"9 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140603402","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Acute Dissociation and Ketamine’s Antidepressant and Anti-Suicidal Ideation Effects in a Midazolam-controlled Trial 咪达唑仑对照试验中的急性解离与氯胺酮的抗抑郁和抗自杀意念作用
IF 4.8 2区 医学
International Journal of Neuropsychopharmacology Pub Date : 2024-04-04 DOI: 10.1093/ijnp/pyae017
Sumra Sajid, Hanga C Galfalvy, John G Keilp, Ainsley K Burke, J John Mann, Michael F Grunebaum
{"title":"Acute Dissociation and Ketamine’s Antidepressant and Anti-Suicidal Ideation Effects in a Midazolam-controlled Trial","authors":"Sumra Sajid, Hanga C Galfalvy, John G Keilp, Ainsley K Burke, J John Mann, Michael F Grunebaum","doi":"10.1093/ijnp/pyae017","DOIUrl":"https://doi.org/10.1093/ijnp/pyae017","url":null,"abstract":"Objective Explore relationships of acute dissociative effects of intravenous ketamine with change in depression and suicidal ideation and with plasma metabolite levels in a randomized, midazolam-controlled trial. Method Data from a completed trial in suicidal, depressed participants (N=40) randomized to ketamine was used to examine relationships between ketamine treatment-emergent dissociative and psychotomimetic symptoms with pre/post-infusion changes in suicidal ideation and depression severity. Non-parametric correlational statistics were used. These methods were also used to explore associations between dissociative or psychotomimetic symptoms and blood levels of ketamine and metabolites in a subset (N=28) who provided blood samples immediately post-infusion. Results Neither acute dissociative nor psychotomimetic effects of ketamine were associated with changes in suicidal ideation or depressive symptoms from pre- to post-infusion. Norketamine had a trend-level, moderate inverse correlation with dissociative symptoms on Day 1 post-injection (p = .064; p = .013 removing one outlier). Dehydronorketamine correlated with CADSS scores at 40 minutes (p = .034), 230 minutes (p = .014), and Day 1 (p=.012). Conclusion We did not find evidence that ketamine’s acute, transient dissociative or psychotomimetic effects are associated with its antidepressant or anti-suicidal ideation actions. The correlation of higher plasma norketamine with lower dissociative symptoms on Day 1 post-treatment suggests dissociation may be more an effect of the parent drug.","PeriodicalId":14134,"journal":{"name":"International Journal of Neuropsychopharmacology","volume":"299 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140596951","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Corrigendum to: Anhedonia, Apathy, Pleasure, and Effort-Based Decision-Making in Adult and Adolescent Cannabis Users and Controls. 更正:成人和青少年大麻使用者及对照组的失乐症、冷漠、快感和基于努力的决策。
IF 4.8 2区 医学
International Journal of Neuropsychopharmacology Pub Date : 2024-03-01 DOI: 10.1093/ijnp/pyae004
{"title":"Corrigendum to: Anhedonia, Apathy, Pleasure, and Effort-Based Decision-Making in Adult and Adolescent Cannabis Users and Controls.","authors":"","doi":"10.1093/ijnp/pyae004","DOIUrl":"10.1093/ijnp/pyae004","url":null,"abstract":"","PeriodicalId":14134,"journal":{"name":"International Journal of Neuropsychopharmacology","volume":"27 3","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10965023/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140293419","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Histamine-3 Receptor Availability and Glutamate Levels in the Brain: A PET-1H-MRS Study of Patients With Schizophrenia and Healthy Controls. 组胺-3 受体在大脑中的可用性和谷氨酸水平:对精神分裂症患者和健康对照组的 PET-1H-MRS 研究。
IF 3.7 2区 医学
International Journal of Neuropsychopharmacology Pub Date : 2024-03-01 DOI: 10.1093/ijnp/pyae011
Atheeshaan Arumuham, Matthew M Nour, Mattia Veronese, Katherine Beck, Ellis Chika Onwordi, David J Lythgoe, Sameer Jauhar, Eugenii A Rabiner, Oliver D Howes
{"title":"Histamine-3 Receptor Availability and Glutamate Levels in the Brain: A PET-1H-MRS Study of Patients With Schizophrenia and Healthy Controls.","authors":"Atheeshaan Arumuham, Matthew M Nour, Mattia Veronese, Katherine Beck, Ellis Chika Onwordi, David J Lythgoe, Sameer Jauhar, Eugenii A Rabiner, Oliver D Howes","doi":"10.1093/ijnp/pyae011","DOIUrl":"10.1093/ijnp/pyae011","url":null,"abstract":"<p><strong>Background: </strong>The histamine-3 receptor (H3R) may have a role in cognitive processes through its action as a presynaptic heteroreceptor inhibiting the release of glutamate in the brain. To explore this, we examined anterior cingulate cortex (ACC) and striatum H3R availability in patients with schizophrenia and characterized their relationships with glutamate levels in corresponding brain regions.</p><p><strong>Methods: </strong>We employed a cross-sectional study, recruiting 12 patients with schizophrenia and 12 healthy volunteers. Participants underwent positron emission tomography using the H3R-specific radio ligand [11C]MK-8278, followed by proton magnetic resonance spectroscopy to measure glutamate levels, recorded as Glu and Glx. Based on existing literature, the ACC and striatum were selected as regions of interest.</p><p><strong>Results: </strong>We found significant inverse relationships between tracer uptake and Glu (r = -0.66, P = .02) and Glx (r = -0.62, P = .04) levels in the ACC of patients, which were absent in healthy volunteers (Glu: r = -0.19, P = .56, Glx: r = 0.10, P = .75). We also found a significant difference in striatal (F1,20 = 6.00, P = .02) and ACC (F1,19 = 4.75, P = .04) Glx levels between groups.</p><p><strong>Conclusions: </strong>These results provide evidence of a regionally specific relationship between H3Rs and glutamate levels, which builds on existing preclinical literature. Our findings add to a growing literature indicating H3Rs may be a promising treatment target in schizophrenia, particularly for cognitive impairment, which has been associated with altered glutamate signaling.</p>","PeriodicalId":14134,"journal":{"name":"International Journal of Neuropsychopharmacology","volume":" ","pages":""},"PeriodicalIF":3.7,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10946236/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139905621","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Neural, Anti-Inflammatory, and Clinical Effects of Transauricular Vagus Nerve Stimulation in Major Depressive Disorder: A Systematic Review. 经耳迷走神经刺激治疗重度抑郁症的神经、抗炎和临床效果:一项系统综述。
IF 3.7 2区 医学
International Journal of Neuropsychopharmacology Pub Date : 2024-03-01 DOI: 10.1093/ijnp/pyad058
Joao Parente, Anna Carolyna Gianlorenco, Ingrid Rebello-Sanchez, Minkyung Kim, Jose Mario Prati, Chi Kyung Kim, Hyuk Choi, Jae-Jun Song, Felipe Fregni
{"title":"Neural, Anti-Inflammatory, and Clinical Effects of Transauricular Vagus Nerve Stimulation in Major Depressive Disorder: A Systematic Review.","authors":"Joao Parente, Anna Carolyna Gianlorenco, Ingrid Rebello-Sanchez, Minkyung Kim, Jose Mario Prati, Chi Kyung Kim, Hyuk Choi, Jae-Jun Song, Felipe Fregni","doi":"10.1093/ijnp/pyad058","DOIUrl":"10.1093/ijnp/pyad058","url":null,"abstract":"<p><strong>Background: </strong>The discovery of effective treatments for major depressive disorder (MDD) may help target different brain pathways. Invasive vagus nerve stimulation (VNS) is an effective neuromodulation technique for the treatment of MDD; however, the effectiveness of the noninvasive technique, transauricular VNS (taVNS), remains unknown. Moreover, a mechanistic understanding of the neural effects behind its biological and therapeutic effects is lacking. This review aimed to evaluate the clinical evidence and the neural and anti-inflammatory effects of taVNS in MDD.</p><p><strong>Methods: </strong>Two searches were conducted using a systematic search strategy reviewed the clinical efficacy and neural connectivity of taVNS in MDD in humans and evaluated the changes in inflammatory markers after taVNS in humans or animal models of depression. A risk of bias assessment was performed in all human studies.</p><p><strong>Results: </strong>Only 5 studies evaluated the effects of taVNS in patients with depression. Although the studies demonstrated the efficacy of taVNS in treating depression, they used heterogeneous methodologies and limited data, thus preventing the conduct of pooled quantitative analyses. Pooled analysis could not be performed for studies that investigated the modulation of connectivity between brain areas; of the 6 publications, 5 were based on the same experiment. The animal studies that analyzed the presence of inflammatory markers showed a reduction in the level of pro-inflammatory cytokines or receptor expression.</p><p><strong>Conclusions: </strong>Data on the clinical efficacy of taVNS in the treatment of MDD are limited. Although these studies showed positive results, no conclusions can be drawn regarding this topic considering the heterogeneity of these studies, as in the case of functional connectivity studies. Based on animal studies, the application of taVNS causes a decrease in the level of inflammatory factors in different parts of the brain, which also regulate the immune system. Therefore, further studies are needed to understand the effects of taVNS in patients with MDD.</p>","PeriodicalId":14134,"journal":{"name":"International Journal of Neuropsychopharmacology","volume":" ","pages":""},"PeriodicalIF":3.7,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10972554/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49690436","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Network Meta-Analysis Indicates Superior Effects of Omega-3 Polyunsaturated Fatty Acids in Preventing the Transition to Psychosis in Individuals at Clinical High-Risk. 网络荟萃分析表明,ω-3 多不饱和脂肪酸在预防临床高危人群向精神病转变方面具有卓越功效。
IF 3.7 2区 医学
International Journal of Neuropsychopharmacology Pub Date : 2024-03-01 DOI: 10.1093/ijnp/pyae014
Chengfeng Chen, Yongyan Deng, Yuling Li, Meiting Zhang, Tong Yu, Kun Xie, Wuyou Bao, Peiying Li, Ling Sun, Tianhong Zhang, Yikang Zhu, Bin Zhang
{"title":"Network Meta-Analysis Indicates Superior Effects of Omega-3 Polyunsaturated Fatty Acids in Preventing the Transition to Psychosis in Individuals at Clinical High-Risk.","authors":"Chengfeng Chen, Yongyan Deng, Yuling Li, Meiting Zhang, Tong Yu, Kun Xie, Wuyou Bao, Peiying Li, Ling Sun, Tianhong Zhang, Yikang Zhu, Bin Zhang","doi":"10.1093/ijnp/pyae014","DOIUrl":"10.1093/ijnp/pyae014","url":null,"abstract":"<p><strong>Background: </strong>The efficacy of pharmacological and nutritional interventions in individuals at clinical high risk for psychosis (CHR-P) remains elusive. This study aims to investigate the efficacy of pharmacological and nutritional interventions in CHR-P and whether these interventions can enhance the efficacy of psychological treatments.</p><p><strong>Methods: </strong>We systematically reviewed data from 5 databases until July 24, 2021: PubMed, Web of Science, EMBASE, China National Knowledge Infrastructure, and WanFang Data. The primary outcome was the transition to psychosis. Network meta-analyses were conducted at 3 time points (6, 12, and ≥24 months) considering both pharmacological/nutritional interventions alone and its combination with psychotherapy.</p><p><strong>Results: </strong>Out of 11 417 identified references, 21 studies were included, comprising 1983 participants. CHR-P participants receiving omega-3 polyunsaturated fatty acids treatment were associated with a lower probability of transition compared with placebo/control at 6 months (odds ratio [OR] = 0.07, 95% confidence interval [CI] = .01 to .054), 12 months (OR = 0.14, 95% CI = .03 to .66), and ≥24 months (OR = 0.16, 95% CI = .05 to .54). Moreover, risperidone plus psychotherapy was associated with a lower likelihood of transition at 6 months compared with placebo/control plus psychotherapy, but this result was not sustained over longer durations.</p><p><strong>Conclusion: </strong>Omega-3 polyunsaturated fatty acids helped in preventing transitions to psychosis compared with controls.</p><p><strong>Prospero registration number: </strong>CRD42021256209.</p>","PeriodicalId":14134,"journal":{"name":"International Journal of Neuropsychopharmacology","volume":" ","pages":""},"PeriodicalIF":3.7,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10949445/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139971800","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Profiling Small RNA From Brain Extracellular Vesicles in Individuals With Depression. 分析抑郁症患者脑细胞外囊泡中的小 RNA。
IF 3.7 2区 医学
International Journal of Neuropsychopharmacology Pub Date : 2024-03-01 DOI: 10.1093/ijnp/pyae013
Pascal Ibrahim, Ryan Denniston, Haruka Mitsuhashi, Jennie Yang, Laura M Fiori, Dariusz Żurawek, Naguib Mechawar, Corina Nagy, Gustavo Turecki
{"title":"Profiling Small RNA From Brain Extracellular Vesicles in Individuals With Depression.","authors":"Pascal Ibrahim, Ryan Denniston, Haruka Mitsuhashi, Jennie Yang, Laura M Fiori, Dariusz Żurawek, Naguib Mechawar, Corina Nagy, Gustavo Turecki","doi":"10.1093/ijnp/pyae013","DOIUrl":"10.1093/ijnp/pyae013","url":null,"abstract":"<p><strong>Background: </strong>Major depressive disorder (MDD) is a leading cause of disability with significant mortality risk. Despite progress in our understanding of the etiology of MDD, the underlying molecular changes in the brain remain poorly understood. Extracellular vesicles (EVs) are lipid-bound particles that can reflect the molecular signatures of the tissue of origin. We aimed to optimize a streamlined EV isolation protocol from postmortem brain tissue and determine whether EV RNA cargo, particularly microRNAs (miRNAs), have an MDD-specific profile.</p><p><strong>Methods: </strong>EVs were isolated from postmortem human brain tissue. Quality was assessed using western blots, transmission electron microscopy, and microfluidic resistive pulse sensing. EV RNA was extracted and sequenced on Illumina platforms. Functional follow-up was performed in silico.</p><p><strong>Results: </strong>Quality assessment showed an enrichment of EV markers, as well as a size distribution of 30 to 200 nm in diameter, and no contamination with cellular debris. Small RNA profiling indicated the presence of several RNA biotypes, with miRNAs and transfer RNAs being the most prominent. Exploring miRNA levels between groups revealed decreased expression of miR-92a-3p and miR-129-5p, which was validated by qPCR and was specific to EVs and not seen in bulk tissue. Finally, in silico functional analyses indicate potential roles for these 2 miRNAs in neurotransmission and synaptic plasticity.</p><p><strong>Conclusion: </strong>We provide a streamlined isolation protocol that yields EVs of high quality that are suitable for molecular follow-up. Our findings warrant future investigations into brain EV miRNA dysregulation in MDD.</p>","PeriodicalId":14134,"journal":{"name":"International Journal of Neuropsychopharmacology","volume":" ","pages":""},"PeriodicalIF":3.7,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10946232/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140065190","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Divergent Acute and Enduring Changes in 50-kHz Ultrasonic Vocalizations in Rats Repeatedly Treated With Amphetamine and Dopaminergic Antagonists: New Insights on the Role of Dopamine in Calling Behavior. 用苯丙胺和多巴胺能拮抗剂反复治疗大鼠50千赫兹超声波发声的急性和持久性差异变化:多巴胺在呼叫行为中作用的新见解。
IF 3.7 2区 医学
International Journal of Neuropsychopharmacology Pub Date : 2024-02-01 DOI: 10.1093/ijnp/pyae001
Marcello Serra, Giulia Costa, Emmanuel Onaivi, Nicola Simola
{"title":"Divergent Acute and Enduring Changes in 50-kHz Ultrasonic Vocalizations in Rats Repeatedly Treated With Amphetamine and Dopaminergic Antagonists: New Insights on the Role of Dopamine in Calling Behavior.","authors":"Marcello Serra, Giulia Costa, Emmanuel Onaivi, Nicola Simola","doi":"10.1093/ijnp/pyae001","DOIUrl":"10.1093/ijnp/pyae001","url":null,"abstract":"<p><strong>Background: </strong>Rats emit 50-kHz ultrasonic vocalizations (USVs) in response to nonpharmacological and pharmacological stimuli, with addictive psychostimulants being the most effective drugs that elicit calling behavior in rats. Earlier investigations found that dopamine D1-like and D2-like receptors modulate the emission of 50-kHz USVs stimulated in rats by the acute administration of addictive psychostimulants. Conversely, information is lacking on how dopamine D1-like and D2-like receptors modulate calling behavior in rats that are repeatedly treated with addictive psychostimulants.</p><p><strong>Methods: </strong>We evaluated the emission of 50-kHz USVs in rats repeatedly treated (×5 on alternate days) with amphetamine (1 mg/kg, i.p.) either alone or together with (1) SCH 23390 (0.1-1 mg/kg, s.c.), a dopamine D1 receptor antagonist; (2) raclopride (0.3-1 mg/kg, s.c.), a selective dopamine D2 receptor antagonist; or (3) a combination of SCH 23390 and raclopride (0.1 + 0.3 mg/kg, s.c.). Calling behavior of rats was recorded following pharmacological treatment, as well as in response to the presentation of amphetamine-paired cues and to amphetamine challenge (both performed 7 days after treatment discontinuation).</p><p><strong>Results: </strong>Amphetamine-treated rats displayed a sensitized 50-kHz USV emission during repeated treatment, as well as marked calling behavior in response to amphetamine-paired cues and to amphetamine challenge. Antagonism of D1 or D2 receptors either significantly suppressed or attenuated the emission of 50-kHz USVs in amphetamine-treated rats, with a maximal effect after synergistic antagonism of both receptors.</p><p><strong>Conclusions: </strong>These results shed further light on how dopamine transmission modulates the emission of 50-kHz USVs in rats treated with psychoactive drugs.</p>","PeriodicalId":14134,"journal":{"name":"International Journal of Neuropsychopharmacology","volume":" ","pages":""},"PeriodicalIF":3.7,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10852626/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139086853","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Enhanced Risky Choice in Male Rats Elicited by the Acute Pharmacological Stressor Yohimbine Involves Prefrontal Dopamine D1 Receptor Activation. 雄性大鼠在急性药理应激物育亨宾的作用下做出更危险的选择涉及前额叶多巴胺 D1 受体的激活。
IF 3.7 2区 医学
International Journal of Neuropsychopharmacology Pub Date : 2024-02-01 DOI: 10.1093/ijnp/pyae006
Alexandra Münster, Julia Huster, Susanne Sommer, Corinna Traxler, Angeline Votteler, Wolfgang Hauber
{"title":"Enhanced Risky Choice in Male Rats Elicited by the Acute Pharmacological Stressor Yohimbine Involves Prefrontal Dopamine D1 Receptor Activation.","authors":"Alexandra Münster, Julia Huster, Susanne Sommer, Corinna Traxler, Angeline Votteler, Wolfgang Hauber","doi":"10.1093/ijnp/pyae006","DOIUrl":"10.1093/ijnp/pyae006","url":null,"abstract":"<p><strong>Background: </strong>Acute stress alters risk-based decision-making; however, the underlying neural and neurochemical substrates are underexplored. Given their well-documented stress-inducing effects in humans and laboratory animals, glucocorticoids such as cortisol and corticosterone and the α2-adrenoceptor antagonist yohimbine represent potent pharmacological tools to mimic some characteristics of acute stress.</p><p><strong>Methods: </strong>Here, we analyzed the effects of the pharmacological stressors corticosterone and yohimbine given systemically on risk-based decision-making in male rats. Moreover, we investigated whether pharmacological stressor effects on risk-based decision-making involve dopamine D1 receptor stimulation in the dorsal prelimbic cortex (PL). We used a risk discounting task that requires choosing between a certain/small reward lever that always delivered 1 pellet and a risky/large reward lever that delivered 4 pellets with a decreasing probability across subsequent trials.</p><p><strong>Results: </strong>Systemic administration of yohimbine increased the preference for the risky/large reward lever. By contrast, systemic single administration of corticosterone did not significantly promote risky choice. Moreover, co-administration of corticosterone did not enhance the effects of yohimbine on risky choice. The data further show that the increased preference for the risky/large reward lever under systemic yohimbine was lowered by a concurrent pharmacological blockade of dopamine D1 receptors in the PL.</p><p><strong>Conclusions: </strong>Our rodent data provide causal evidence that stimulation of PL D1 receptors may represent a neurochemical mechanism by which the acute pharmacological stressor yohimbine, and possibly nonpharmacological stressors as well, promote risky choice.</p>","PeriodicalId":14134,"journal":{"name":"International Journal of Neuropsychopharmacology","volume":" ","pages":""},"PeriodicalIF":3.7,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10852621/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139424639","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Making Sense of Psychedelics in the CNS. 了解中枢神经系统中的迷幻剂。
IF 3.7 2区 医学
International Journal of Neuropsychopharmacology Pub Date : 2024-02-01 DOI: 10.1093/ijnp/pyae007
Blake A Fordyce, Bryan L Roth
{"title":"Making Sense of Psychedelics in the CNS.","authors":"Blake A Fordyce, Bryan L Roth","doi":"10.1093/ijnp/pyae007","DOIUrl":"10.1093/ijnp/pyae007","url":null,"abstract":"<p><p>For centuries, ancient lineages have consumed psychedelic compounds from natural sources. In the modern era, scientists have since harnessed the power of computational tools, cellular assays, and behavioral metrics to study how these compounds instigate changes on molecular, cellular, circuit-wide, and system levels. Here, we provide a brief history of psychedelics and their use in science, medicine, and culture. We then outline current techniques for studying psychedelics from a pharmacological perspective. Finally, we address known gaps in the field and potential avenues of further research to broaden our collective understanding of physiological changes induced by psychedelics, the limits of their therapeutic capabilities, and how researchers can improve and inform treatments that are rapidly becoming accessible worldwide.</p>","PeriodicalId":14134,"journal":{"name":"International Journal of Neuropsychopharmacology","volume":" ","pages":""},"PeriodicalIF":3.7,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10888522/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139642111","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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