{"title":"Research hotspots and frontiers of alcohol and epilepsy: A bibliometric analysis.","authors":"Wenhui Liu, Huan Li, Simei Lin","doi":"10.1002/npr2.12421","DOIUrl":"10.1002/npr2.12421","url":null,"abstract":"<p><strong>Purpose: </strong>Alcohol is implicated in epileptogenesis and seizures attack. An increasing number of studies about alcohol and epilepsy have been published. We aimed to assess research trends and hot spots in the field of alcohol and epilepsy.</p><p><strong>Patients and methods: </strong>Literature concerning alcohol and epilepsy was systemically searched through the Web of Science database. Collaborative maps were quantitatively analyzed by using the VOSviewer and CiteSpace tools.</p><p><strong>Results: </strong>A total of 1578 papers about the field of alcohol and epilepsy were taken into analysis, which was written by 6840 authors from 2153 institutions in 85 countries, published in 676 journals, and cited 79 667 references from 10 750 journals. The United States was the leading country and had close ties with others. The University of Toronto was the most productive institution. Alcoholism-clinical and experimental research was the fastest-growing journal. Richard J. Bodnar was the author contributing the most literature. Analysis of keywords showed epilepsy, alcohol, seizures, alcohol withdrawal, and management were common themes.</p><p><strong>Conclusion: </strong>The presented study conducted the first bibliometric analysis of the field of alcohol and epilepsy, which will provide insights into the latest progress, evolution paths, frontier research hot spots, and future research trends in the field.</p>","PeriodicalId":19137,"journal":{"name":"Neuropsychopharmacology Reports","volume":" ","pages":"342-355"},"PeriodicalIF":2.5,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11144618/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139996962","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The effective perospirone augmentation with clonazepam for treatment-resistant burning mouth syndrome: A case report.","authors":"Motoko Watanabe, Chihiro Takao, Chizuko Maeda, Gayatri Nayanar, Risa Tominaga, Yasuyuki Kimura, Trang Thi Huyen Tu, Takahiko Nagamine, Akira Toyofuku","doi":"10.1002/npr2.12425","DOIUrl":"10.1002/npr2.12425","url":null,"abstract":"<p><p>Burning mouth syndrome (BMS) is characterized by burning sensations in the oral region without corresponding abnormalities and is often accompanied by uncomfortable sensations. Herein, we present cases of BMS in which the remaining uncomfortable sensations improved with perospirone augmentation with clonazepam. Case 1: A 61-year-old man complained of a burning pain in his tongue, a sensation of dryness and discomfort as if his tongue was sticking to a palatal plate. With the diagnosis of BMS, psychopharmacotherapy was initiated with amitriptyline. At the dose of amitriptyline 50 mg, the pain lessened but uncomfortable sensations persisted. Further attempts to alleviate symptoms by combining aripiprazole with amitriptyline, aripiprazole with mirtazapine, or aripiprazole with clonazepam were limited; however, nearly all symptoms were relieved by a combination of perospirone 8.0 mg with clonazepam 1.5 mg. Case 2: A 51-year-old woman complained of a burning sensation along with oral dryness and crumb-like feeling on her tongue. She was diagnosed with BMS and began treatment with amitriptyline. Her burning sensation improved at the dose of 25 mg, but uncomfortable sensations persisted. Augmentation of amitriptyline with aripiprazole, aripiprazole either with valproate, mirtazapine, or clonazepam failed to produce a significant improvement. However, a regimen of perospirone 6.0 mg and clonazepam 1.5 mg relieved the crumb-like sensation and pain and culminated in a stabilized condition. The reported cases suggested that multiple approaches targeting the dopaminergic circuit in basal ganglia involving the serotoninergic and GABA systems, through the administration of perospirone with clonazepam is an effective adjunctive treatment for the remaining uncomfortable sensations in patients with BMS.</p>","PeriodicalId":19137,"journal":{"name":"Neuropsychopharmacology Reports","volume":" ","pages":"464-467"},"PeriodicalIF":2.5,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11144597/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140158648","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Assessment on interoceptive awareness on alcohol use and gambling disorders reveals dissociable interoceptive abilities linked to external and internal dependencies: Practical use of Body Perception Questionnaire Very Short Form (BPQ-VSF) in clinical settings.","authors":"Giselle London, Hiroko Hida, Ariyuki Kagaya, Shigeto Yamawaki, Maro G Machizawa","doi":"10.1002/npr2.12424","DOIUrl":"10.1002/npr2.12424","url":null,"abstract":"<p><p>Interoception is one of the pivotal cognitive functions for mechanisms of our body awareness, and malfunction of the interoceptive network is thought to be associated with mental illness, including addiction. Within addictive disorders, substance-based and non-substance-based addictions are known to hold dissociable reward systems. However, little is known about how interoceptive awareness between these addiction sub-types would differ. Subjective interoceptive awareness was assessed among patients with alcohol use disorder (n = 50) who were subsequently hospitalized or remained out-patient and gambling addiction (n = 41) by the Body Awareness component of the Japanese version of the Body Perception Questionnaire (BPQ-VSFBA-J) and compared them against healthy control (n = 809). Both addiction groups showed significantly lower BPQ than the control, with no substantial differences between inpatients and outpatients for alcohol samples. Notably, BPQ scores for gambling patients were significantly lower than those for the alcohol group. This evidence may suggest a putative role of interoceptive ability on the severity of behavioral addiction over substance-based addiction.</p>","PeriodicalId":19137,"journal":{"name":"Neuropsychopharmacology Reports","volume":" ","pages":"361-370"},"PeriodicalIF":2.5,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11144623/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140102130","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Association between the early repolarization pattern and nocturnal suicide attempts.","authors":"Hiroshi Kameyama, Kenichi Sugimoto, Fumitoshi Kodaka, Kenji Okuno, Takahiro Masaki, Kazutaka Nukariya, Masahiro Shigeta","doi":"10.1002/npr2.12433","DOIUrl":"10.1002/npr2.12433","url":null,"abstract":"<p><strong>Aim: </strong>Numerous recent reports have highlighted the association between mental disorders and electrocardiographic findings. The early repolarization pattern (ERP) on electrocardiogram has been linked with a history of suicide attempts and attention deficit hyperactivity disorder, and associations with impulsivity have also been reported. It is known that suicidal intent is more common at night. Patients who have a mental disorder and ERP may have a higher likelihood of impulsivity, potentially increasing the risk of suicide at night.</p><p><strong>Methods: </strong>The subjects were 43 patients with a history of suicide attempts who had undergone electrocardiographic examination at Jikei University School of Medicine Kashiwa Hospital and received intervention from our department. Due to the diurnal variation in electrocardiographic findings, only patients who underwent the examination during the daytime were included. Patients' clinical backgrounds were compared according to the presence or absence of ERP, and the association between nocturnal suicide attempts and ERP was examined using multivariate analysis.</p><p><strong>Results: </strong>The frequency of nocturnal suicidal behavior was 76.2% in patients with ERP and 31.8% in those without ERP, but the difference was not significant after Bonferroni correction. In the multivariate analysis, there was a significant association of ERP with nocturnal suicide attempts (p = 0.018).</p><p><strong>Conclusion: </strong>The finding of an association between ERP and nocturnal suicide attempts indicates that ERP is a biological indicator that can predict nocturnal suicide attempts.</p>","PeriodicalId":19137,"journal":{"name":"Neuropsychopharmacology Reports","volume":" ","pages":"410-416"},"PeriodicalIF":2.5,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11144600/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140143879","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Availability of individual proteins for quantitative analysis in postmortem brains preserved in two different brain banks.","authors":"Atsuko Nagaoka, Mizuki Hino, Ryuta Izumi, Risa Shishido, Miki Ishibashi, Masataka Hatano, Makoto Sainouchi, Akiyoshi Kakita, Hiroaki Tomita, Yasuto Kunii","doi":"10.1002/npr2.12430","DOIUrl":"10.1002/npr2.12430","url":null,"abstract":"<p><strong>Aim: </strong>Postmortem brain research is necessary for elucidating the pathology of schizophrenia; an increasing number of studies require a combination of suitable tissue samples preserved at multiple brain banks. In this study, we examined whether a comparative study of protein expression levels can be conducted using postmortem brain samples preserved in different facilities.</p><p><strong>Methods: </strong>We compared the demographic factors of postmortem brain samples preserved in two institutions and measured and compared the expression levels of glyceraldehyde-3-phosphate dehydrogenase (GAPDH) and glial fibrillary acidic protein (GFAP) in the prefrontal cortex and superior temporal gyrus. GAPDH is generally used as a loading control for western blotting, and GFAP is considered as an astrocyte marker in the brain.</p><p><strong>Results: </strong>We found significant differences between the two institutions in postmortem interval, age at death, and preservation time. To reduce the effects of these differences on our measurements, the parameters were set as covariates in our analyses of covariance. Subsequently, no differences in GAPDH and GFAP expression were found between institutions.</p><p><strong>Conclusions: </strong>When studies are conducted using brain samples preserved in different brain banks, differences in demographic factors should be carefully considered and taken into account by statistical methods to minimize their impact as much as possible. Since there was no significant difference in the protein expression levels of GAPDH and GFAP in either region between the two institutions that preserved the postmortem brains, we concluded that it is possible to perform protein quantitative analysis assuming that there is no effect of difference between two institutions.</p>","PeriodicalId":19137,"journal":{"name":"Neuropsychopharmacology Reports","volume":" ","pages":"399-409"},"PeriodicalIF":2.5,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11144605/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140336321","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Drinking behavior patterns may be associated with persistent depressive symptoms after alcohol abstinence in alcohol use disorder.","authors":"Kazuhiro Kurihara, Hotaka Shinzato, Yoshikazu Takaesu, Tsuyoshi Kondo","doi":"10.1002/npr2.12429","DOIUrl":"10.1002/npr2.12429","url":null,"abstract":"<p><strong>Aim: </strong>This study examined the association between drinking behavior patterns and depressive symptoms after alcohol abstinence in patients with alcohol use disorder (AUD).</p><p><strong>Method: </strong>We recruited 102 AUD inpatients with baseline depressive symptoms, indicated by scores ≥6 on the Quick Inventory of Depressive Symptomatology Self-Report Japanese Version (QIDS-SR-J) pre-detoxification. Post-4-week abstinence, remission was defined as QIDS-SR-J scores <6. Patients were classified into remitted (n = 51) and persistent (n = 51) groups. Comparative analyses were conducted using patient profiles and the Drinking Behavior Pattern 20-item Questionnaire (DBP-20). Logistic regression identified factors related to post-abstinence persistent depression. Receiver operating characteristic curve analysis determined DBP-20 cutoff scores differentiating between persistent and remitted depression.</p><p><strong>Results: </strong>The persistent group exhibited higher scores in the DBP-20 \"coping with negative affect\" subscale. Logistic regression showed low education, unemployment, and using alcohol for coping as significant factors for persistent depression. Conversely, an automatic drinking pattern indicated natural remission post-abstinence. A subscale score of ≥8 in alcohol use for coping, especially among unemployed patients, predicted persistent depression (sensitivity 86.8%, positive predictive value 73.3%).</p><p><strong>Conclusion: </strong>Unemployed patients with AUD using alcohol to cope with negative affect may experience residual depression even after detoxification. In contrast, patients with AUD with predominantly automatic drinking behavior may exhibit natural remission post-abstinence.</p>","PeriodicalId":19137,"journal":{"name":"Neuropsychopharmacology Reports","volume":" ","pages":"381-388"},"PeriodicalIF":2.5,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11144622/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140094394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Search for cerebrospinal fluid biomarkers in patients with major psychiatric disorders: Multiplex immunoassay findings and proximity extension assay prospects.","authors":"Shinsuke Hidese","doi":"10.1002/npr2.12439","DOIUrl":"10.1002/npr2.12439","url":null,"abstract":"<p><p>Multiplex immunoassays have been developed to detect multiple proteins simultaneously and are used to search for biomarkers, including those present in major psychiatric disorders. This study aimed to review multiplex immunoassay studies on cerebrospinal fluid (CSF) biomarkers in patients with schizophrenia, bipolar disorder (BD), and major depressive disorder (MDD) and examine future research directions using improved proteomic techniques. According to the results of previous multiplex immunoassay studies, increased CSF IFN-β, IL-8, MCP-2, MMP-2, PAI-1, sICAM-1, and sVCAM-1 and decreased CSF ACE, APP, fibrinogen, and GDNF were observed in patients with schizophrenia, while CSF HGF and S100B were positively correlated with psychotic symptom and CSF IL-11, IL-29/IFN-λ<sub>1</sub>, and TSLP were negatively correlated. Increased CSF IFN-β and IL-1β and decreased CSF Aβ<sub>42</sub>, APP, IL-6, and NCAM-1 were observed, while CSF S100B was positively correlated with manic symptom in patients with BD. Increased CSF IL-4, MCP-1, MIP-1β, and MMP-2 were observed in patients with MDD, while CSF HGF and MMP-2 were positively correlated with depressive symptom and CSF IL-15 and MCP-1 were negatively correlated. However, signal cross-talk and cross-reactivity problems have been observed in previous studies using multiplex immunoassay. The proximity extension assay can be used to overcome cross-reactivity and enable ultrasensitive multiplexed detection and quantification of more than 1000 target proteins. However, proteomic studies using proximity extension assay technology in patients with schizophrenia, BD, or MDD are still scarce. Therefore, future high-quality proteomic studies are required to identify CSF biomarkers for larger sets of target proteins in patients with major psychiatric disorders.</p>","PeriodicalId":19137,"journal":{"name":"Neuropsychopharmacology Reports","volume":" ","pages":"314-320"},"PeriodicalIF":2.5,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11144604/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140869197","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A systematic review of the beneficial effects of prebiotics, probiotics, and synbiotics on ADHD.","authors":"Pooneh Allahyari, Saheb Abbas Torki, Bahareh Aminnezhad Kavkani, Zahra Mahmoudi, Mohadeseh Sadat Mousavi Hoseini, Mahdi Moradi, Farkhondeh Alami, Mohammad Keshavarz Mohammadian, Samira Bahoo Sele Bani, Khadijeh Abbasi Mobarakeh, Hanieh Shafaei, Sara Khoshdooz, Azadeh Hajipour, Saeid Doaei, Maryam Gholamalizadeh","doi":"10.1002/npr2.12437","DOIUrl":"10.1002/npr2.12437","url":null,"abstract":"<p><strong>Background: </strong>Children with attention deficit hyperactivity disorder (ADHD) may benefit from probiotics and prebiotics, but the effects are unclear. To determine whether probiotics and prebiotics affect children with ADHD, a systematic review was conducted.</p><p><strong>Methods: </strong>The present systematic review analyzed cohort studies and randomized controlled trials that examined whether prebiotics and probiotics are associated with ADHD. Seven randomized controlled trials and two cohort studies met our inclusion criteria.</p><p><strong>Results: </strong>Research on Lactobacillus rhamnosus GG (LGG) probiotic supplementation showed that children with ADHD had better emotional, physical, social, and school functioning, and a higher health-related quality of life compared to the placebo group. The studies also showed that Synbiotic 2000 reduces markers of intestinal and vascular inflammation in children with ADHD, in part through increasing SCFA levels.</p><p><strong>Conclusion: </strong>The use of probiotics and prebiotics as adjuvants therapy in patients with ADHD is beneficial. Further studies with longer duration, including more participants and a variety of age groups, and using various evaluation techniques such as in vivo observation are required to examine the effects of prebiotics and probiotics on ADHD.</p>","PeriodicalId":19137,"journal":{"name":"Neuropsychopharmacology Reports","volume":" ","pages":"300-307"},"PeriodicalIF":2.5,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11144606/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140862040","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Taro Kishi, Nakao Iwata, Hiroyuki Irie, Masaru Aikawa
{"title":"Post-marketing surveillance of quetiapine fumarate extended-release tablets in patients with bipolar depression.","authors":"Taro Kishi, Nakao Iwata, Hiroyuki Irie, Masaru Aikawa","doi":"10.1002/npr2.12441","DOIUrl":"10.1002/npr2.12441","url":null,"abstract":"<p><strong>Aim: </strong>This study aimed to verify the real-world efficacy and safety of quetiapine fumarate extended-release tablets (Bipresso® 50 mg and 150 mg; marketing authorization holder is KYOWA Pharmaceutical Industry Co., Ltd., Osaka, Japan) in patients with bipolar depression.</p><p><strong>Methods: </strong>We performed a post-marketing surveillance with an observation period of 12 weeks.</p><p><strong>Results: </strong>In the safety analysis group (n = 345), adverse drug reactions (ADRs) occurred in 111 patients (32.17%). The most common ADRs (>1%) were somnolence in 55 patients (15.94%), akathisia in 11 (3.19%), dizziness in 10 (2.90%), weight increase in 6 (1.74%), thirst in 5 (1.45%), and hypersomnia, constipation, and nausea in 4 patients each (1.16%). The only severe ADR was one patient of suicidal ideation, and \"longer time since the onset of the first episode\" (p = 0.011) and \"presence of complications\" (p < 0.001) were identified as significant risk factors for the occurrence of ADRs. In the efficacy analysis group (n = 265), the average changes from baseline in the total Montgomery-Åsberg Depression Rating Scale (MADRS) score were -7.3 ± 8.8, -12.2 ± 10.7, -16.8 ± 12.7, and -13.2 ± 12.7 points after 4, 8, and 12 weeks, and at the last evaluation, respectively. The mean MADRS total score decrease had no significant association with maximum daily dose, diagnosis, and presence or absence of prior or concomitant treatment for bipolar disorder with mood stabilizers/antipsychotics/antidepressants.</p><p><strong>Conclusion: </strong>The efficacy of quetiapine fumarate extended-release tablets was confirmed in clinical practice, and no new safety concerns or risks were identified.</p>","PeriodicalId":19137,"journal":{"name":"Neuropsychopharmacology Reports","volume":" ","pages":"424-436"},"PeriodicalIF":2.5,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11144599/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140859907","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Kazuro Shibata, Kosuke Enomoto, Takahiro Tsutsumi, Hiroyuki Muraoka, Tatsu Fuwa, Masahiko Kawano, Jun Ishigooka, Ken Inada, Katsuji Nishimura, Hidehiro Oshibuchi
{"title":"Effect of intermittent subchronic MK-801 administration on dopamine synthesis capacity and responsiveness in the prefrontal cortex.","authors":"Kazuro Shibata, Kosuke Enomoto, Takahiro Tsutsumi, Hiroyuki Muraoka, Tatsu Fuwa, Masahiko Kawano, Jun Ishigooka, Ken Inada, Katsuji Nishimura, Hidehiro Oshibuchi","doi":"10.1002/npr2.12420","DOIUrl":"10.1002/npr2.12420","url":null,"abstract":"<p><strong>Aim: </strong>The therapeutic potential of N-methyl-D-aspartate glutamate receptor (NMDAR) antagonists, particularly ketamine, in mood disorders, is linked to their modulation of dopamine dynamics in the medial prefrontal cortex (mPFC). However, conflicting effects of distinct NMDAR antagonists, like ketamine and phencyclidine, on mPFC dopamine levels stem from variances in their receptor affinity profiles. This study investigates the impact of intermittent subchronic administration of an NMDAR antagonist on dopamine synthesis capacity and responsiveness within the mPFC, focusing on Dizocilpine (MK-801), a highly selective NMDAR antagonist.</p><p><strong>Methods: </strong>In vivo microdialysis and high-performance liquid chromatography assessed extracellular dopamine levels in the mPFC following subchronic MK-801 treatment. Locomotor activity was measured using a computed video tracking system.</p><p><strong>Results: </strong>Intermittent subchronic MK-801 administration, followed by a 24-h withdrawal, preserved both dopamine synthesis capacity and responsiveness to MK-801 challenge in the mPFC. However, altered locomotor activity was observed, deviating from previous findings indicating impaired dopamine synthesis and responsiveness in the mPFC with twice-daily subchronic NMDAR antagonist treatment.</p><p><strong>Conclusion: </strong>These findings offer crucial biochemical insights into the diverse impacts of NMDAR antagonists on dopamine dynamics and the distinct therapeutic mechanisms associated with ketamine in depression treatment. However, further investigation is imperative to pinpoint potential inconsistencies stemming from variances in drug type, dosage, or administration frequency.</p>","PeriodicalId":19137,"journal":{"name":"Neuropsychopharmacology Reports","volume":" ","pages":"333-341"},"PeriodicalIF":2.5,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11144610/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139913155","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}