Journal of Psychiatry & Neuroscience最新文献

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Interaction of the gut microbiota and brain functional connectivity in late-life depression. 晚年抑郁症中肠道微生物群与大脑功能连接的相互作用
IF 4.1 2区 医学
Journal of Psychiatry & Neuroscience Pub Date : 2024-09-19 Print Date: 2024-09-01 DOI: 10.1503/jpn.240050
Chia-Fen Tsai, Chia-Hsien Chuang, Pei-Chi Tu, Wan-Chen Chang, Yen-Po Wang, Pei-Yi Liu, Po-Shan Wu, Chung-Yen Lin, Ching-Liang Lu
{"title":"Interaction of the gut microbiota and brain functional connectivity in late-life depression.","authors":"Chia-Fen Tsai, Chia-Hsien Chuang, Pei-Chi Tu, Wan-Chen Chang, Yen-Po Wang, Pei-Yi Liu, Po-Shan Wu, Chung-Yen Lin, Ching-Liang Lu","doi":"10.1503/jpn.240050","DOIUrl":"10.1503/jpn.240050","url":null,"abstract":"<p><strong>Background: </strong>Increasing evidence suggests an important role of the gut microbiome in the pathogenesis of mental disorders, including depression, along the microbiota-gut-brain axis. We sought to explore the interactions between gut microbe composition and neural circuits in late-life depression (LLD).</p><p><strong>Methods: </strong>We performed fecal 16S ribosomal RNA (rRNA) sequencing and resting-state functional magnetic resonance imaging in a case-control cohort of older adults with LLD and healthy controls to characterize the association between gut microbiota and brain functional connectivity (FC). We used the Hamilton Depression Rating Scale (HAMD) to assess depressive symptoms.</p><p><strong>Results: </strong>We included 32 adults with LLD and 16 healthy controls. At the genus level, the relative abundance of <i>Enterobacter</i>, <i>Akkermansiaceae</i>, <i>Hemophilus</i>, <i>Burkholderia</i>, and <i>Rothia</i> was significantly higher among patients with LDD than controls. Reduced FC within mood regulation circuits was mainly found in the frontal cortex (e.g., the right superior and inferior frontal gyrus, right lateral occipital cortex, left middle frontal gyrus, and left caudate) among patients with MDD. Group-characterized gut microbes among controls and patients showed opposite correlations with seed-based FC, which may account for the aberrant emotion regulation among patients with LDD. The abundance of <i>Enterobacter</i> (dominant genus among patients with LLD) was positively correlated with both HAMD scores (<i>r</i> = 0.49, <i>p</i> = 0.0004) and group-characterized FC (<i>r</i> = -0.37, <i>p</i> < 0.05), while <i>Odoribacter</i> (dominant genus among controls) was negatively correlated with both HAMD scores (<i>r</i> = -0.30, <i>p</i> = 0.04) and group-characterized FC.</p><p><strong>Limitations: </strong>The study's cross-sectional design and small sample size limit causal inferences; larger longitudinal studies are required for detailed subgroup analyses.</p><p><strong>Conclusion: </strong>We identified significant correlations between LDD-characterized gut microbes and brain FC, as well as depression severity, which may contribute to the pathophysiology of depression development among patients with LLD. Specific microbes were linked to altered brain connectivity, suggesting potential targets for treating LLD.</p>","PeriodicalId":50073,"journal":{"name":"Journal of Psychiatry & Neuroscience","volume":"49 5","pages":"E289-E300"},"PeriodicalIF":4.1,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11426387/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142299782","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
CCNP Innovations in Neuropsychopharmacology Award: The psychopharmacology of psychedelics: where the brain meets spirituality. CCNP 神经精神药理学创新奖:迷幻药的精神药理学:大脑与精神的交汇。
IF 4.1 2区 医学
Journal of Psychiatry & Neuroscience Pub Date : 2024-09-19 Print Date: 2024-09-01 DOI: 10.1503/jpn.240037
Gabriella Gobbi
{"title":"CCNP Innovations in Neuropsychopharmacology Award: The psychopharmacology of psychedelics: where the brain meets spirituality.","authors":"Gabriella Gobbi","doi":"10.1503/jpn.240037","DOIUrl":"10.1503/jpn.240037","url":null,"abstract":"<p><p>For 3000 years, psychedelics have been used in religious contexts to enhance spiritual thinking, well-being, and a sense of community. In the last few years, a renaissance in the use of psychedelic drugs for mental disorders has occurred in Western society; consequently, a pressing scientific need to elucidate the intricate mechanisms underlying their actions has arisen. Psychedelics mainly bind to serotonin (5-HT) receptors, particularly 5-HT<sub>2A</sub> receptors, but may also bind to other receptors. Unlike conventional psychotropic drugs used in psychiatry, psychedelics introduce a distinctive complexity. They not only engage in receptor activation, but also exert influence over specific neural circuits, thereby facilitating transformative cognitive experiences and fostering what many have identified as a spiritual contemplation or mystical experience. This comprehensive review describes clinical studies that have examined the propensity of psychedelics to enhance spiritual, mystical, and transcendent cognitive states. This multifaceted nature, encompassing diverse components and paradigms, necessitates careful consideration during the investigation of psychedelic mechanisms of action to avoid oversimplification. The present review endeavours to elucidate the mechanisms underlying the actions of 2 principal psychedelic substances, psilocybin and lysergic acid diethylamide (LSD), with a focus on monoamine and glutamate receptor mechanisms; molecular aspects, such as neuroplasticity and epigenetics; as well as the impact of psychedelics on brain circuits, including the default mode network and the cortico-striato-thalamo-cortical network. Given their distinctive and intricate mechanisms of action, psychedelics necessitate a novel conceptual framework in psychiatry, offering insight into the treatment of mental health disorders and facilitating the integration of the realms of brain, mind, and spirituality.</p>","PeriodicalId":50073,"journal":{"name":"Journal of Psychiatry & Neuroscience","volume":"49 5","pages":"E301-E318"},"PeriodicalIF":4.1,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11426389/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142299781","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
Perspective on adolescent psychiatric illness and emerging role of microRNAs as biomarkers of risk. 透视青少年精神疾病和作为风险生物标志物的 microRNAs 的新作用。
IF 4.1 2区 医学
Journal of Psychiatry & Neuroscience Pub Date : 2024-08-29 Print Date: 2024-07-01 DOI: 10.1503/jpn.240072
Alice Morgunova, Maxime Teixeira, Cecilia Flores
{"title":"Perspective on adolescent psychiatric illness and emerging role of microRNAs as biomarkers of risk.","authors":"Alice Morgunova, Maxime Teixeira, Cecilia Flores","doi":"10.1503/jpn.240072","DOIUrl":"10.1503/jpn.240072","url":null,"abstract":"","PeriodicalId":50073,"journal":{"name":"Journal of Psychiatry & Neuroscience","volume":"49 4","pages":"E282-E288"},"PeriodicalIF":4.1,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11374446/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142114281","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
Clozapine-induced priapism in a man with schizoaffective disorder. 一名精神分裂症患者因氯氮平诱发的前列腺增生症。
IF 4.1 2区 医学
Journal of Psychiatry & Neuroscience Pub Date : 2024-08-29 Print Date: 2024-07-01 DOI: 10.1503/jpn.240048
Jennifer Woo, Mohamed Eisa
{"title":"Clozapine-induced priapism in a man with schizoaffective disorder.","authors":"Jennifer Woo, Mohamed Eisa","doi":"10.1503/jpn.240048","DOIUrl":"10.1503/jpn.240048","url":null,"abstract":"","PeriodicalId":50073,"journal":{"name":"Journal of Psychiatry & Neuroscience","volume":"49 4","pages":"E263-E264"},"PeriodicalIF":4.1,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11374445/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142114280","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
Plasma exosomes carrying mmu-miR-146a-5p and Notch signalling pathway-mediated synaptic activity in schizophrenia. 携带mmu-miR-146a-5p的血浆外泌体与精神分裂症患者Notch信号通路介导的突触活动
IF 4.1 2区 医学
Journal of Psychiatry & Neuroscience Pub Date : 2024-08-29 Print Date: 2024-07-01 DOI: 10.1503/jpn.230118
Zhichao Wang, Tong Wu, Houjia Hu, Alabed Ali A Alabed, Guangcheng Cui, Lei Sun, Zhenghai Sun, Yuchen Wang, Ping Li
{"title":"Plasma exosomes carrying mmu-miR-146a-5p and Notch signalling pathway-mediated synaptic activity in schizophrenia.","authors":"Zhichao Wang, Tong Wu, Houjia Hu, Alabed Ali A Alabed, Guangcheng Cui, Lei Sun, Zhenghai Sun, Yuchen Wang, Ping Li","doi":"10.1503/jpn.230118","DOIUrl":"10.1503/jpn.230118","url":null,"abstract":"<p><strong>Background: </strong>Schizophrenia is characterized by a complex interplay of genetic and environmental factors, leading to alterations in various molecular pathways that may contribute to its pathogenesis. Recent studies have shown that exosomal microRNAs could play essential roles in various brain disorders; thus, we sought to explore the potential molecular mechanisms through which microRNAs in plasma exosomes are involved in schizophrenia.</p><p><strong>Methods: </strong>We obtained sequencing data sets (SUB12404730, SUB12422862, and SUB12421357) and transcriptome sequencing data sets (GSE111708, GSE108925, and GSE18981) from mouse models of schizophrenia using the Sequence Read Archive and the Gene Expression Omnibus databases, respectively. We performed differential expression analysis on mRNA to identify differentially expressed genes. We conducted Gene Ontology (GO) functional and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analyses to determine differentially expressed genes. Subsequently, we determined the intersection of differentially expressed microRNAs in plasma exosomes and in prefrontal cortex tissue. We retrieved downstream target genes of mmu-miR-146a-5p from TargetScan and used Cytoscape to visualize and map the microRNA-target gene regulatory network. We conducted in vivo experiments using MK-801-induced mouse schizophrenia models and in vitro experiments using cultured mouse neurons. The role of plasma exosomal miR-146a-5p in schizophrenia was validated using a cell counting kit, detection of lactate dehydrogenase, dual-luciferase assay, quantitative reverse transcription polymerase chain reaction, and Western blot analysis.</p><p><strong>Results: </strong>Differential genes were mainly enriched in synaptic regulation-related functions and pathways and were associated with neuronal degeneration. We found that mmu-miR-146a-5p was highly expressed in both prefrontal cortical tissue and plasma exosomes, which may be transferred to lobe cortical vertebral neurons, leading to the synergistic dysregulation of gene network functions and, therefore, promoting schizophrenia development. We found that mmu-miR-146a-5p may inhibit the Notch signalling pathway-mediated synaptic activity of mouse pyramidal neurons in the lobe cortex by targeting <i>NOTCH1</i>, which in turn could promote the onset and development of schizophrenia in mice.</p><p><strong>Limitations: </strong>The study's findings are based on animal models and in vitro experiments, which may not fully replicate the complexity of human schizophrenia.</p><p><strong>Conclusion: </strong>Our findings suggest that mmu-miR-146a-5p in plasma-derived exosomes may play an important role in the pathogenesis of schizophrenia. Our results provide new insights into the underlying molecular mechanisms of the disease.</p>","PeriodicalId":50073,"journal":{"name":"Journal of Psychiatry & Neuroscience","volume":"49 4","pages":"E265-E281"},"PeriodicalIF":4.1,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11374447/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142114282","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
Emotional dysregulation and stimulant medication in adult ADHD. 成人多动症患者的情绪失调和兴奋剂药物治疗。
IF 4.1 2区 医学
Journal of Psychiatry & Neuroscience Pub Date : 2024-08-09 Print Date: 2024-07-01 DOI: 10.1503/jpn.240009
Myrto Sklivanioti Greenfield, Yanlu Wang, J Paul Hamilton, Per Thunberg, Mussie Msghina
{"title":"Emotional dysregulation and stimulant medication in adult ADHD.","authors":"Myrto Sklivanioti Greenfield, Yanlu Wang, J Paul Hamilton, Per Thunberg, Mussie Msghina","doi":"10.1503/jpn.240009","DOIUrl":"10.1503/jpn.240009","url":null,"abstract":"<p><strong>Background: </strong>Emotional dysregulation affects up to two-thirds of adult patients with attention-deficit/hyperactivity disorder (ADHD) and is increasingly seen as a core ADHD symptom that is clinically associated with greater functional impairment and psychiatric comorbidity. We sought to investigate emotional dysregulation in ADHD and explored its neural underpinnings.</p><p><strong>Methods: </strong>We studied emotion induction and regulation in a clinical cohort of adult patients with ADHD before and after a stimulant challenge. We compared patients with age- and gender-matched healthy controls using behavioural, structural, and functional measures. We hypothesized that patients would demonstrate aberrant emotion processing compared with healthy controls, and sought to find whether this could be normalized by stimulant medication.</p><p><strong>Results: </strong>Behaviourally, the ADHD group showed reduced emotion induction and regulation capacity. Brain imaging revealed abberant activation and deactivation patterns during emotion regulation, lower grey-matter volume in limbic and paralimbic areas, and greater grey-matter volume in visual and cerebellar areas, compared with healthy controls. The behavioural and functional deficits seen in emotion induction and regulation in the ADHD group were not normalized by stimulant medication.</p><p><strong>Conclusion: </strong>Patients with ADHD may have impaired emotion induction and emotion regulation capacity, but these deficits are not reversed by stimulant medication. These results have important clinical implications when assessing which aspects of emotional dysregulation are relevant for patients and if and how traditional ADHD pharmacotherapy affects emotion induction and emotion regulation.</p>","PeriodicalId":50073,"journal":{"name":"Journal of Psychiatry & Neuroscience","volume":"49 4","pages":"E242-E251"},"PeriodicalIF":4.1,"publicationDate":"2024-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11318975/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141914439","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
Perplexity of utterances in untreated first-episode psychosis: an ultra-high field MRI dynamic causal modelling study of the semantic network. 未经治疗的首发精神病患者语句的复杂性:语义网络的超高场磁共振成像动态因果建模研究。
IF 4.1 2区 医学
Journal of Psychiatry & Neuroscience Pub Date : 2024-08-09 Print Date: 2024-07-01 DOI: 10.1503/jpn.240031
Maria Francisca Alonso-Sánchez, Wolfram Hinzen, Rui He, Joseph Gati, Lena Palaniyappan
{"title":"Perplexity of utterances in untreated first-episode psychosis: an ultra-high field MRI dynamic causal modelling study of the semantic network.","authors":"Maria Francisca Alonso-Sánchez, Wolfram Hinzen, Rui He, Joseph Gati, Lena Palaniyappan","doi":"10.1503/jpn.240031","DOIUrl":"10.1503/jpn.240031","url":null,"abstract":"<p><strong>Background: </strong>Psychosis involves a distortion of thought content, which is partly reflected in anomalous ways in which words are semantically connected into utterances in speech. We sought to explore how these linguistic anomalies are realized through putative circuit-level abnormalities in the brain's semantic network.</p><p><strong>Methods: </strong>Using a computational large-language model, Bidirectional Encoder Representations from Transformers (BERT), we quantified the contextual expectedness of a given word sequence (perplexity) across 180 samples obtained from descriptions of 3 pictures by patients with first-episode schizophrenia (FES) and controls matched for age, parental social status, and sex, scanned with 7 T ultra-high field functional magnetic resonance imaging (fMRI). Subsequently, perplexity was used to parametrize a spectral dynamic causal model (DCM) of the effective connectivity within (intrinsic) and between (extrinsic) 4 key regions of the semantic network at rest, namely the anterior temporal lobe, the inferior frontal gyrus (IFG), the posterior middle temporal gyrus (MTG), and the angular gyrus.</p><p><strong>Results: </strong>We included 60 participants, including 30 patients with FES and 30 controls. We observed higher perplexity in the FES group, indicating that speech was less predictable by the preceding context among patients. Results of Bayesian model comparisons showed that a DCM including the group by perplexity interaction best explained the underlying patterns of neural activity. We observed an increase of self-inhibitory effective connectivity within the IFG, as well as reduced self-inhibitory tone within the pMTG, in the FES group. An increase in self-inhibitory tone in the IFG correlated strongly and positively with inter-regional excitation between the IFG and posterior MTG, while self-inhibition of the posterior MTG was negatively correlated with this interregional excitation.</p><p><strong>Limitation: </strong>Our design did not address connectivity in the semantic network during tasks that selectively activated the semantic network, which could corroborate findings from this resting-state fMRI study. Furthermore, we do not present a replication study, which would ideally use speech in a different language.</p><p><strong>Conclusion: </strong>As an explanation for peculiar speech in psychosis, these results index a shift in the excitatory-inhibitory balance regulating information flow across the semantic network, confined to 2 regions that were previously linked specifically to the executive control of meaning. Based on our approach of combining a large language model with causal connectivity estimates, we propose loss in semantic control as a potential neurocognitive mechanism contributing to disorganization in psychosis.</p>","PeriodicalId":50073,"journal":{"name":"Journal of Psychiatry & Neuroscience","volume":"49 4","pages":"E252-E262"},"PeriodicalIF":4.1,"publicationDate":"2024-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11318974/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141914440","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
Aberrant functional connectivity of the globus pallidus in the modulation of the relationship between childhood trauma and major depressive disorder. 调节童年创伤与重度抑郁障碍之间关系的丘脑苍白球功能连接异常。
IF 4.1 2区 医学
Journal of Psychiatry & Neuroscience Pub Date : 2024-07-03 Print Date: 2024-07-01 DOI: 10.1503/jpn.240019
Jinrou Xia, Xiaohui Lin, Tong Yu, Huiwen Yu, Yurong Zou, Qianyi Luo, Hongjun Peng
{"title":"Aberrant functional connectivity of the globus pallidus in the modulation of the relationship between childhood trauma and major depressive disorder.","authors":"Jinrou Xia, Xiaohui Lin, Tong Yu, Huiwen Yu, Yurong Zou, Qianyi Luo, Hongjun Peng","doi":"10.1503/jpn.240019","DOIUrl":"10.1503/jpn.240019","url":null,"abstract":"<p><strong>Background: </strong>Childhood trauma plays a crucial role in the dysfunctional reward circuitry in major depressive disorder (MDD). We sought to explore the effect of abnormalities in the globus pallidus (GP)-centric reward circuitry on the relationship between childhood trauma and MDD.</p><p><strong>Methods: </strong>We conducted seed-based dynamic functional connectivity (dFC) analysis among people with or without MDD and with or without childhood trauma. We explored the relationship between abnormal reward circuitry, childhood trauma, and MDD.</p><p><strong>Results: </strong>We included 48 people with MDD and childhood trauma, 30 people with MDD without childhood trauma, 57 controls with childhood trauma, and 46 controls without childhood trauma. We found that GP subregions exhibited abnormal dFC with several regions, including the inferior parietal lobe, thalamus, superior frontal gyrus (SFG), and precuneus. Abnormal dFC in these GP subregions showed a significant correlation with childhood trauma. Moderation analysis revealed that the dFC between the anterior GP and SFG, as well as between the anterior GP and the precentral gyrus, modulated the relationship between childhood abuse and MDD severity. We observed a negative correlation between childhood trauma and MDD severity among patients with lower dFC between the anterior GP and SFG, as well as higher dFC between the anterior GP and precentral gyrus. This suggests that reduced dFC between the anterior GP and SFG, along with increased dFC between the anterior GP and precentral gyrus, may attenuate the effect of childhood trauma on MDD severity.</p><p><strong>Limitations: </strong>Cross-sectional designs cannot be used to infer causality.</p><p><strong>Conclusion: </strong>Our findings underscore the pivotal role of reward circuitry abnormalities in MDD with childhood trauma. These abnormalities involve various brain regions, including the postcentral gyrus, precentral gyrus, inferior parietal lobe, precuneus, superior frontal gyrus, thalamus, and middle frontal gyrus.</p><p><strong>Clinical trial registration: </strong>ChiCTR2300078193.</p>","PeriodicalId":50073,"journal":{"name":"Journal of Psychiatry & Neuroscience","volume":"49 4","pages":"E218-E232"},"PeriodicalIF":4.1,"publicationDate":"2024-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11230669/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141499518","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
Cerebellar network alterations in adult attention-deficit/hyperactivity disorder. 成人注意力缺陷/多动症的小脑网络改变
IF 4.1 2区 医学
Journal of Psychiatry & Neuroscience Pub Date : 2024-07-03 Print Date: 2024-07-01 DOI: 10.1503/jpn.230146
Salla Parkkinen, Joaquim Radua, Derek S Andrews, Declan Murphy, Flavio Dell'Acqua, Valeria Parlatini
{"title":"Cerebellar network alterations in adult attention-deficit/hyperactivity disorder.","authors":"Salla Parkkinen, Joaquim Radua, Derek S Andrews, Declan Murphy, Flavio Dell'Acqua, Valeria Parlatini","doi":"10.1503/jpn.230146","DOIUrl":"10.1503/jpn.230146","url":null,"abstract":"<p><strong>Background: </strong>Attention-deficit/hyperactivity disorder (ADHD) is a neurodevelopmental condition that often persists into adulthood. Underlying alterations in brain connectivity have been identified but some relevant connections, such as the middle, superior, and inferior cerebellar peduncles (MCP, SCP, and ICP, respectively), have remained largely unexplored; thus, we sought to investigate whether the cerebellar peduncles contribute to ADHD pathophysiology among adults.</p><p><strong>Methods: </strong>We applied diffusion-weighted spherical deconvolution tractography to dissect the cerebellar peduncles of male adults with ADHD (including those who did or did not respond to methylphenidate, based on at least 30% symptom improvement at 2 months) and controls. We investigated differences in tract metrics between controls and the whole ADHD sample and between controls and treatment-response groups using sensitivity analyses. Finally, we analyzed the association between the tract metrics and cliniconeuropsychological profiles.</p><p><strong>Results: </strong>We included 60 participants with ADHD (including 42 treatment responders and 18 nonresponders) and 20 control participants. In the whole ADHD sample, MCP fractional anisotropy (FA; <i>t</i> <sub>78</sub> = 3.24, <i>p</i> = 0.002) and hindrance modulated orientational anisotropy (HMOA; <i>t</i> <sub>78</sub> = 3.01, <i>p</i> = 0.004) were reduced, and radial diffusivity (RD) in the right ICP was increased (<i>t</i> <sub>78</sub> = -2.84, <i>p</i> = 0.006), compared with controls. Although case-control differences in MCP FA and HMOA, which reflect white-matter microstructural organization, were driven by both treatment response groups, only responders significantly differed from controls in right ICP RD, which relates to myelination (<i>t</i> <sub>60</sub> = 3.14, <i>p</i> = 0.003). Hindrance modulated orientational anisotropy of the MCP was significantly positively associated with hyperactivity measures.</p><p><strong>Limitations: </strong>This study included only male adults with ADHD. Further research needs to investigate potential sex- and development-related differences.</p><p><strong>Conclusion: </strong>These results support the role of the cerebellar networks, especially of the MCP, in adult ADHD pathophysiology and should encourage further investigation.</p><p><strong>Clinical trial registration: </strong>NCT03709940.</p>","PeriodicalId":50073,"journal":{"name":"Journal of Psychiatry & Neuroscience","volume":"49 4","pages":"E233-E241"},"PeriodicalIF":4.1,"publicationDate":"2024-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11230668/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141499519","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
The Cannabis Act: implications for human participant research with cannabis. 大麻法:对人类参与大麻研究的影响。
IF 4.1 2区 医学
Journal of Psychiatry & Neuroscience Pub Date : 2024-06-18 Print Date: 2024-05-01 DOI: 10.1503/jpn.240049
Patricia Di Ciano, Christine Wickens, Elvin M Paul, Raesham Mahmood, Jean-François Crépault, Sergio Rueda, Isabelle Boileau
{"title":"The <i>Cannabis Act</i>: implications for human participant research with cannabis.","authors":"Patricia Di Ciano, Christine Wickens, Elvin M Paul, Raesham Mahmood, Jean-François Crépault, Sergio Rueda, Isabelle Boileau","doi":"10.1503/jpn.240049","DOIUrl":"10.1503/jpn.240049","url":null,"abstract":"","PeriodicalId":50073,"journal":{"name":"Journal of Psychiatry & Neuroscience","volume":"49 3","pages":"E212-E217"},"PeriodicalIF":4.1,"publicationDate":"2024-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11192575/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141421688","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
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