NeuroMolecular Medicine最新文献

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Author Correction: Inflammasome Activation Mediates Apoptotic and Pyroptotic Death in Astrocytes Under Ischemic Conditions. 作者更正:炎症小体激活介导缺血性条件下星形胶质细胞的凋亡和Pyropotic死亡。
IF 3.5 4区 医学
NeuroMolecular Medicine Pub Date : 2023-12-01 DOI: 10.1007/s12017-023-08760-3
Lap Jack Wong, Bernice Woon Li Lee, Yi Jing Sng, Luting Poh, Vismitha Rajeev, Sharmelee Selvaraji, Grant R Drummond, Christopher G Sobey, Thiruma V Arumugam, David Y Fann
{"title":"Author Correction: Inflammasome Activation Mediates Apoptotic and Pyroptotic Death in Astrocytes Under Ischemic Conditions.","authors":"Lap Jack Wong, Bernice Woon Li Lee, Yi Jing Sng, Luting Poh, Vismitha Rajeev, Sharmelee Selvaraji, Grant R Drummond, Christopher G Sobey, Thiruma V Arumugam, David Y Fann","doi":"10.1007/s12017-023-08760-3","DOIUrl":"10.1007/s12017-023-08760-3","url":null,"abstract":"","PeriodicalId":19304,"journal":{"name":"NeuroMolecular Medicine","volume":" ","pages":"657-659"},"PeriodicalIF":3.5,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41147742","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Inflammasome Activation Mediates Apoptotic and Pyroptotic Death in Astrocytes Under Ischemic Conditions. 炎症小体激活介导星形胶质细胞在缺血条件下的凋亡和Pyropotic死亡。
IF 3.5 4区 医学
NeuroMolecular Medicine Pub Date : 2023-12-01 Epub Date: 2023-08-30 DOI: 10.1007/s12017-023-08753-2
Lap Jack Wong, Bernice Woon Li Lee, Yi Jing Sng, Luting Poh, Vismitha Rajeev, Sharmelee Selvaraji, Grant R Drummond, Christopher G Sobey, Thiruma V Arumugam, David Y Fann
{"title":"Inflammasome Activation Mediates Apoptotic and Pyroptotic Death in Astrocytes Under Ischemic Conditions.","authors":"Lap Jack Wong, Bernice Woon Li Lee, Yi Jing Sng, Luting Poh, Vismitha Rajeev, Sharmelee Selvaraji, Grant R Drummond, Christopher G Sobey, Thiruma V Arumugam, David Y Fann","doi":"10.1007/s12017-023-08753-2","DOIUrl":"10.1007/s12017-023-08753-2","url":null,"abstract":"<p><p>Inflammation is a hallmark mechanism of ischemic stroke-induced brain injury. Recent studies have shown that an intracellular multimeric protein complex known as an inflammasome is a key factor for inducing an inflammatory response, and apoptotic and pyroptotic cell death in ischemic stroke. Inflammasome assembly leads to the activation of pro-inflammatory caspases, and the maturation and secretion of pro-inflammatory cytokines IL-1β and IL-18. While the role of inflammasomes in ischemic stroke-induced neuronal death, and microglial activation and cell death have been established, little is known about the role of inflammasomes in astrocytes under ischemic conditions. In this study, we investigated the expression and activation of inflammasome components in protoplasmic and fibrous astrocytes under ischemic conditions. We found that both protoplasmic and fibrous astrocytes expressed a differential increase in inflammasome protein components, and that their activation promoted maturation of IL-1β and IL-18, and secretion of IL-1β, as well as initiating apoptotic and pyroptotic cell death. Pharmacological inhibition of caspase-1 decreased expression of cleaved caspase-1 and production of mature IL-1β, and protected against inflammasome-mediated apoptotic and pyroptotic cell death. Overall, this study provides novel insights into the role of inflammasome signaling in astrocytes under ischemic conditions.</p>","PeriodicalId":19304,"journal":{"name":"NeuroMolecular Medicine","volume":" ","pages":"533-544"},"PeriodicalIF":3.5,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10486885","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
MicroRNAs as a Tool for Differential Diagnosis of Neuromuscular Disorders. 微RNA作为神经肌肉疾病鉴别诊断的工具。
IF 3.5 4区 医学
NeuroMolecular Medicine Pub Date : 2023-12-01 Epub Date: 2023-10-19 DOI: 10.1007/s12017-023-08763-0
Nahla O Mousa, Ahmed Abdellatif, Nagia Fahmy, Hassan El-Fawal, Ahmed Osman
{"title":"MicroRNAs as a Tool for Differential Diagnosis of Neuromuscular Disorders.","authors":"Nahla O Mousa, Ahmed Abdellatif, Nagia Fahmy, Hassan El-Fawal, Ahmed Osman","doi":"10.1007/s12017-023-08763-0","DOIUrl":"10.1007/s12017-023-08763-0","url":null,"abstract":"<p><p>Neuromuscular disorders (NMD) are a class of progressive disorders that are characterized by wasting of the muscles. Some of the disorders like Duchenne muscular dystrophy (DMD), Becker muscular dystrophy (BMD), congenital muscular dystrophies (CMDs), limb-girdle muscular dystrophies (LGMD), and mild spinal muscular atrophy (SMA) type III share several presenting clinical features, and hence, diagnosis is usually a challenging task. In this study, the diagnostic potential of some species of microRNAs (miRNAs) that are known to play roles in normal and pathological contexts of myocytes (myomiRs) were evaluated to assess their potential in differential diagnosis of NMDs. In this study, seventy-four patients with different neuromuscular disorders along with thirty age-matched healthy control subjects were enrolled. Peripheral blood samples were collected from enrolled subjects followed by miRNA extraction and reverse transcription followed by quantification of the circulating levels of the studied miRNAs (miR-499, miR-206, miR-208a, miR-223, miR-191, miR-103a-3p, miR-103a-5p), by real-time PCR and statistical analysis. The data indicated that miR-499 level showed high circulating levels in DMD patients as well as in patients with other related disorders such as BMD. However, the levels of miR-499 were much higher in DMD patients and it can be used to diagnose DMD. In addition, miR-206 can selectively differentiate between DMD and all other disorders. The results also revealed that miR-208a and miR-223 were significantly dysregulated in SMA patients, and miR-103a-3p could distinguish DMD from BMD. The expression levels of some miRNA species can be utilized in the process of differential diagnosis of NMDs and can serve as a diagnostic biomarker, and such findings will pave the way towards generating targeted therapies.</p>","PeriodicalId":19304,"journal":{"name":"NeuroMolecular Medicine","volume":" ","pages":"603-615"},"PeriodicalIF":3.5,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10721695/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49680377","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Pathophysiological Links Between Obesity and Dementia. 肥胖症与痴呆症之间的病理生理学联系。
IF 3.5 4区 医学
NeuroMolecular Medicine Pub Date : 2023-12-01 Epub Date: 2023-04-22 DOI: 10.1007/s12017-023-08746-1
David E Wong Zhang, Vivian Tran, Antony Vinh, Quynh Nhu Dinh, Grant R Drummond, Christopher G Sobey, Maria Jelinic, T Michael De Silva
{"title":"Pathophysiological Links Between Obesity and Dementia.","authors":"David E Wong Zhang, Vivian Tran, Antony Vinh, Quynh Nhu Dinh, Grant R Drummond, Christopher G Sobey, Maria Jelinic, T Michael De Silva","doi":"10.1007/s12017-023-08746-1","DOIUrl":"10.1007/s12017-023-08746-1","url":null,"abstract":"<p><p>Obesity is a major global health concern, with prevalence rates rapidly rising due to increased availability of highly processed foods rich in fats and/or sugars and technological advances promoting more sedentary behaviour. There is increasing evidence to suggest that obesity predisposes individuals to developing cognitive impairment and dementia. However, the relationship between the brain and the peripheral metabolic state is complex, and many of the underlying mechanisms of cognitive impairment in obesity are yet to be fully elucidated. To better understand the links between obesity and dementia, further work is required to determine pathological changes occurring in the brain during obesity. In this mini-review, we discuss the role of two pathological features of obesity (the gut-brain axis and systemic inflammation) and their potential contribution to dementia.</p>","PeriodicalId":19304,"journal":{"name":"NeuroMolecular Medicine","volume":" ","pages":"451-456"},"PeriodicalIF":3.5,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10721659/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9443242","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
CircPTP4A2 Promotes Microglia Polarization in Cerebral Ischemic Stroke via miR-20b-5p/YTHDF1/TIMP2 Axis. CircPTP4A2 通过 miR-20b-5p/YTHDF1/TIMP2 轴促进缺血性脑卒中小胶质细胞极化
IF 3.5 4区 医学
NeuroMolecular Medicine Pub Date : 2023-12-01 Epub Date: 2023-09-14 DOI: 10.1007/s12017-023-08751-4
Xianxin Kang, Yanhui Cao, Guodong Sun, Dongsheng Fei, Kai Kang, Xianglin Meng, Mingyan Zhao
{"title":"CircPTP4A2 Promotes Microglia Polarization in Cerebral Ischemic Stroke via miR-20b-5p/YTHDF1/TIMP2 Axis.","authors":"Xianxin Kang, Yanhui Cao, Guodong Sun, Dongsheng Fei, Kai Kang, Xianglin Meng, Mingyan Zhao","doi":"10.1007/s12017-023-08751-4","DOIUrl":"10.1007/s12017-023-08751-4","url":null,"abstract":"<p><p>Activated microglia play dual roles in ischemic stroke (IS) according to its polarization states. Herein, we investigated the function of circPTP4A2 in regulating microglia polarization in IS. IS models were established by MACO/R and OGD/R treatment. TTC staining was employed to detect cerebral infarct size. Cell vitality was measured using CCK-8 assay. CD16 and CD206 levels were examined using flow cytometry. The interactions between circPTP4A2, miR-20b-5p, and YTHDF1 were analyzed by dual-luciferase reporter gene, RIP, or RNA pull-down assays. circPTP4A2 was upregulated in IS patients. circPTP4A2 knockdown alleviated MCAO/R-induced cerebral injury in mice. circPTP4A2 knockdown promoted microglia M2 polarization after OGD/R. circPTP4A2 promoted YTHDF1 expression by sponging miR-20b-5p. The promoting effect of circPTP4A2 knockdown on microglia M2 polarization was abrogated by miR-20b-5p inhibition. YTHDF1 activated the NF-κB pathway by increasing TIMP2 mRNA stability and expression. circPTP4A2 downregulation promoted microglia M2 polarization to inhibit IS development by regulating the miR-20b-5p/YTHDF1/TIMP2/NF-κB axis.</p>","PeriodicalId":19304,"journal":{"name":"NeuroMolecular Medicine","volume":" ","pages":"501-515"},"PeriodicalIF":3.5,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10222845","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Genetic Variations and Altered Blood mRNA Level of Circadian Genes and BDNF as Risk Factors of Post-Stroke Cognitive Impairment Among Eastern Indians. 遗传变异和血液中昼夜节律基因和BDNF mRNA水平的改变是东部印度人卒中后认知障碍的危险因素。
IF 3.5 4区 医学
NeuroMolecular Medicine Pub Date : 2023-12-01 Epub Date: 2023-10-09 DOI: 10.1007/s12017-023-08761-2
Dipanwita Sadhukhan, Arindam Biswas, Smriti Mishra, Koustav Chatterjee, Daytee Maji, Parama Mitra, Priyanka Mukherjee, Gargi Podder, Biman Kanti Ray, Atanu Biswas, Tapas Kumar Banerjee, Subhra Prakash Hui, Ishani Deb
{"title":"Genetic Variations and Altered Blood mRNA Level of Circadian Genes and BDNF as Risk Factors of Post-Stroke Cognitive Impairment Among Eastern Indians.","authors":"Dipanwita Sadhukhan, Arindam Biswas, Smriti Mishra, Koustav Chatterjee, Daytee Maji, Parama Mitra, Priyanka Mukherjee, Gargi Podder, Biman Kanti Ray, Atanu Biswas, Tapas Kumar Banerjee, Subhra Prakash Hui, Ishani Deb","doi":"10.1007/s12017-023-08761-2","DOIUrl":"10.1007/s12017-023-08761-2","url":null,"abstract":"<p><p>Post-stroke cognitive impairment (PSCI) is a clinical outcome in around 30% of post-stroke survivors. BDNF is a major gene in this regard. It is regulated by circadian rhythm. The circadian genes are correlated with stroke timings at molecular level. However, studies suggesting the role of these on susceptibility to PSCI are limited. We aim here to determine: (a) genetic risk variants in circadian clock genes, BDNF and (b) dysregulation in expression level of CLOCK, BMAL1, and BDNF that may be associated with PSCI. BDNF (rs6265G/A, rs56164415C/T), CLOCK (rs1801260T/C, rs4580704G/C), and CRY2 (rs2292912C/G) genes variants were genotyped among 119 post-stroke survivors and 292 controls from Eastern part of India. In addition, we analyzed their gene expression in Peripheral blood Mononuclear cells (PBMC) from 15 PSCI cases and 12 controls. The mRNA data for BDNF was further validated by its plasma level through ELISA (n = 38). Among the studied variants, only rs4580704/CLOCK showed an overall association with PSCI (P = 0.001) and lower Bengali Mini-Mental State Examination (BMSE) score. Its 'C' allele showed a correlation with attention deficiency. The language and memory impairments showed association with rs6265/BDNF, while the 'CC' genotype of rs2292912/CRY2 negatively influenced language and executive function. A significant decrease in gene expression for CLOCK and BDNF in PBMC (influenced by specific genotypes) of PSCI patients was observed than controls. Unlike Pro-BDNF, plasma-level mBDNF was also lower in them. Our results suggest the genetic variants in CLOCK, CRY2, and BDNF as risk factors for PSCI among eastern Indians. At the same time, a lowering expression of CLOCK and BDNF genes in PSCI patients than controls describes their transcriptional dysregulation as underlying mechanism for post-stroke cognitive decline.</p>","PeriodicalId":19304,"journal":{"name":"NeuroMolecular Medicine","volume":" ","pages":"586-595"},"PeriodicalIF":3.5,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41183261","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
CD137L Inhibition Ameliorates Hippocampal Neuroinflammation and Behavioral Deficits in a Mouse Model of Sepsis-Associated Encephalopathy. CD137L抑制可改善脓毒症相关脑病小鼠模型中的海马神经炎症和行为缺陷。
IF 3.3 4区 医学
NeuroMolecular Medicine Pub Date : 2023-12-01 Epub Date: 2023-10-05 DOI: 10.1007/s12017-023-08764-z
Fang Qiu, Yueming Liu, Yang Liu, Zhuyun Zhao, Lile Zhou, Pengfei Chen, Yunbo Du, Yanmei Wang, Huimin Sun, Changchun Zeng, Xiaokang Wang, Yuqiang Liu, Haobo Pan, Changneng Ke
{"title":"CD137L Inhibition Ameliorates Hippocampal Neuroinflammation and Behavioral Deficits in a Mouse Model of Sepsis-Associated Encephalopathy.","authors":"Fang Qiu, Yueming Liu, Yang Liu, Zhuyun Zhao, Lile Zhou, Pengfei Chen, Yunbo Du, Yanmei Wang, Huimin Sun, Changchun Zeng, Xiaokang Wang, Yuqiang Liu, Haobo Pan, Changneng Ke","doi":"10.1007/s12017-023-08764-z","DOIUrl":"10.1007/s12017-023-08764-z","url":null,"abstract":"<p><p>Anxiety manifestations and cognitive dysfunction are common sequelae in patients with sepsis-associated encephalopathy (SAE). Microglia-mediated inflammatory signaling is involved in anxiety, depression, and cognitive dysfunction during acute infection with bacterial lipopolysaccharide (LPS). However, the molecular mechanisms underlying microglia activation and behavioral and cognitive deficits in sepsis have not been in fully elucidated. Based on previous research, we speculated that the CD137 receptor/ligand system modulates microglia function during sepsis to mediate classical neurological SAE symptoms. A murine model of SAE was established by injecting male C57BL/6 mice with LPS, and cultured mouse BV2 microglia were used for in vitro assays. RT-qPCR, immunofluorescence staining, flow cytometry, and ELISA were used to assess microglial activation and the expression of CD137L and inflammation-related cytokines in the mouse hippocampus and in cultured BV2 cells. In addition, behavioral tests were conducted in assess cognitive performance and behavioral distress. Immunofluorescence and RT-qPCR analyses showed that hippocampal expression of CD137L was upregulated in activated microglia following LPS treatment. Pre-treatment with the CD137L neutralizing antibody TKS-1 significantly reduced CD137L levels, attenuated the expression of M1 polarization markers in microglia, and inhibited the production of TNF-α, IL-1β, and IL-6 in both LPS-treated mice and BV2 cells. Conversely, stimulation of CD137L signaling by recombinant CD137-Fc fusion protein activated the synthesis and release of pro-inflammatory cytokines in cultures BV2 microglia. Importantly, open field, elevated plus maze, and Y-maze spontaneous alternation test results indicated that TKS-1 administration alleviated anxiety-like behavior and spatial memory decline in mice with LPS-induced SAE. These findings suggest that CD137L upregulation in activated microglia critically contributes to neuroinflammation, anxiety-like behavior, and cognitive dysfunction in the mouse model of LPS-induced sepsis. Therefore, therapeutic modulation of the CD137L/CD137 signaling pathway may represent an effective way to minimize brain damage and prevent cognitive and emotional deficits associated with SAE.</p>","PeriodicalId":19304,"journal":{"name":"NeuroMolecular Medicine","volume":" ","pages":"616-631"},"PeriodicalIF":3.3,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10721669/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41145088","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Identification of a Novel ARSA Gene Mutation Through High-Throughput Molecular Diagnosis Method in Two Girls with Late Infantile Metachromatic Leukodystrophy. 通过高通量分子诊断方法在两名罹患晚期婴幼儿变色性白质营养不良症的女孩身上发现新型 ARSA 基因突变
IF 3.5 4区 医学
NeuroMolecular Medicine Pub Date : 2023-12-01 Epub Date: 2023-09-08 DOI: 10.1007/s12017-023-08757-y
Abolfazl Yari, Farzane Vafaeie, Zahra Miri Karam, Mahya Hosseini, Hassan Hashemzade, Maryam Sadat Rahimi, Alireza Ehsanbakhsh, Ebrahim Miri-Moghaddam
{"title":"Identification of a Novel ARSA Gene Mutation Through High-Throughput Molecular Diagnosis Method in Two Girls with Late Infantile Metachromatic Leukodystrophy.","authors":"Abolfazl Yari, Farzane Vafaeie, Zahra Miri Karam, Mahya Hosseini, Hassan Hashemzade, Maryam Sadat Rahimi, Alireza Ehsanbakhsh, Ebrahim Miri-Moghaddam","doi":"10.1007/s12017-023-08757-y","DOIUrl":"10.1007/s12017-023-08757-y","url":null,"abstract":"<p><p>Metachromatic leukodystrophy (MLD) is a rare leukoencephalopathy caused by pathogenic mutations in the ARSA gene. It manifests as severe motor symptoms, mental problems, and sometimes, seizures. We aimed to investigate the phenotypic manifestations and genetic causes of MLD in an Iranian family. We present the case of a 3-year-old girl who presented with hypotonia, muscular atrophy, and seizures. Neurological and neuromuscular examinations were performed to evaluate clinical characteristics. Whole exome sequencing (WES) was used to detect disease-causing variants. In silico analysis was performed to predict the pathogenicity of this variant. GROMACS software was utilized for molecular dynamic simulation (MDS). Neurological studies revealed marked slowing of motor conduction velocities and an increased motor unit action potential duration. Brain MRI scan revealed white matter abnormalities. By applying WES, we identified a novel homozygous missense variant (NM_000487.6, c.938G > C, p.R313P) in ARSA. Direct sequencing identified this homozygous variant in her asymptomatic younger sister, whereas both parents carried a heterozygous variant. This mutation has not been reported in genetic databases or in literature. In silico analysis predicted that any variation in this DNA position would cause disease, as it is highly conserved. The c.938G > C variant was classified as a pathogenic variant according to ACMG/AMP guidelines. MDS analysis indicated that c.938G > C had a significant impact on both the structure and stabilization of ARSA, ultimately resulting in impaired protein function. The identification of this variant expands the spectrum of ARSA gene mutations associated with MLD and highlights the importance of genetic testing for the diagnosis of MLD.</p>","PeriodicalId":19304,"journal":{"name":"NeuroMolecular Medicine","volume":" ","pages":"563-572"},"PeriodicalIF":3.5,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10553907","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Optogenetic Inhibition of Glutamatergic Neurons in the Dysgranular Posterior Insular Cortex Modulates Trigeminal Neuropathic Pain in CCI-ION Rat. 光遗传抑制颅内后皮层谷氨酸能神经元可调节 CCI-ION 大鼠的三叉神经痛
IF 3.5 4区 医学
NeuroMolecular Medicine Pub Date : 2023-12-01 Epub Date: 2023-09-12 DOI: 10.1007/s12017-023-08752-3
Jaisan Islam, Elina Kc, Soochong Kim, Moon Young Chung, Ki Seok Park, Hyong Kyu Kim, Young Seok Park
{"title":"Optogenetic Inhibition of Glutamatergic Neurons in the Dysgranular Posterior Insular Cortex Modulates Trigeminal Neuropathic Pain in CCI-ION Rat.","authors":"Jaisan Islam, Elina Kc, Soochong Kim, Moon Young Chung, Ki Seok Park, Hyong Kyu Kim, Young Seok Park","doi":"10.1007/s12017-023-08752-3","DOIUrl":"10.1007/s12017-023-08752-3","url":null,"abstract":"<p><p>In individuals with chronic neuropathic pain, the posterior insular cortex (PIC) has been found to exhibit increased glutamatergic activity, and the dysgranular portion of PIC (DPIC) has been investigated as a novel cortical target for pain modulation. However, the role of DPIC glutamatergic neurons (DPICg) in trigeminal neuropathic pain (TNP) remains unclear. Here, we examined the outcomes of DPICg inhibition in a rat model of chronic constriction injury of the infraorbital nerve (CCI-ION). Animals were randomly divided into TNP, sham, and control groups. TNP animals underwent CCI-ION surgery. Either optogenetic or null viruses were delivered to the contralateral DPICg of TNP and sham animals. In vivo single-unit extracellular recordings from the ipsilateral spinal trigeminal nucleus caudalis (TNC) and contralateral ventral posteromedial (VPM) thalamus were obtained under both \"ON\" and \"OFF\" stimulation states. Behavioral responses during the stimulation-OFF and stimulation-ON phases were examined. Expression of c-Fos, pERK, and CREB immunopositive neurons were also observed. Optogenetic inhibition of contralateral DPICg decreased the neural firing rate in both TNC and VPM thalamus, the expression of sensory-responsive cell bodies, and transcriptional factors in the DPIC of TNP group. Improvements in hyperalgesia, allodynia, and anxiety-like responses in TNP animals were also observed during stimulation-ON condition. In fine, descending pain processing is influenced by neuroanatomical projections from the DPIC to the pain matrix areas, and DPICg could play a necessary role in this neural circuitry. Therefore, the antinociceptive effect of DPICg inhibition in this study may provide evidence for the therapeutic potential of DPICg in TNP.</p>","PeriodicalId":19304,"journal":{"name":"NeuroMolecular Medicine","volume":" ","pages":"516-532"},"PeriodicalIF":3.5,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10572161","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Dysregulated COMT Expression in Fragile X Syndrome. 脆性 X 综合征中的 COMT 表达失调。
IF 3.5 4区 医学
NeuroMolecular Medicine Pub Date : 2023-12-01 Epub Date: 2023-09-08 DOI: 10.1007/s12017-023-08754-1
Kagistia Hana Utami, Nur Amirah Binte Muhammed Yusof, Marta Garcia-Miralles, Niels Henning Skotte, Srikanth Nama, Prabha Sampath, Sarah R Langley, Mahmoud A Pouladi
{"title":"Dysregulated COMT Expression in Fragile X Syndrome.","authors":"Kagistia Hana Utami, Nur Amirah Binte Muhammed Yusof, Marta Garcia-Miralles, Niels Henning Skotte, Srikanth Nama, Prabha Sampath, Sarah R Langley, Mahmoud A Pouladi","doi":"10.1007/s12017-023-08754-1","DOIUrl":"10.1007/s12017-023-08754-1","url":null,"abstract":"<p><p>Transcriptional and proteomics analyses in human fragile X syndrome (FXS) neurons identified markedly reduced expression of COMT, a key enzyme involved in the metabolism of catecholamines, including dopamine, epinephrine and norepinephrine. FXS is the most common genetic cause of intellectual disability and autism spectrum disorders. COMT encodes for catechol-o-methyltransferase and its association with neuropsychiatric disorders and cognitive function has been extensively studied. We observed a significantly reduced level of COMT in in FXS human neural progenitors and neurons, as well as hippocampal neurons from Fmr1 null mice. We show that deficits in COMT were associated with an altered response in an assay of dopaminergic activity in Fmr1 null mice. These findings demonstrate that loss of FMRP downregulates COMT expression and affects dopamine signaling in FXS, and supports the notion that targeting catecholamine metabolism may be useful in regulating certain neuropsychiatric aspects of FXS.</p>","PeriodicalId":19304,"journal":{"name":"NeuroMolecular Medicine","volume":" ","pages":"644-649"},"PeriodicalIF":3.5,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10243590","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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