BMC Neuroscience最新文献

{"title":"Diethyl nitrosamine-induces neurobehavioral deficit, oxido-nitrosative stress in rats' brain: a neuroprotective role of diphenyl diselenide.","authors":"Solomon Owumi, Joseph Chimezie, Praise Dyap Emmanuel, Anthony Chukwuma Okeibuno, Olatunde Owoeye","doi":"10.1186/s12868-024-00922-8","DOIUrl":"10.1186/s12868-024-00922-8","url":null,"abstract":"<p><p>Diethylnitrosamine (DEN), a common dietary carcinogen, is associated with neurotoxicity in humans and animals. This study investigated the neuroprotective effects of diphenyl diselenide (DPDS) against DEN-induced neurotoxicity in male Albino Wistar rats (n = 40). Rats were randomly distributed into cohorts and treated as follows: vehicle control (corn oil 2 mL/kg; gavage), DPDS-only (5 mg/kg; gavage) and DEN-only (200 mg/kg; single dose i.p.). Also, two other rat cohorts were pre-treated with DPDS (3 or 5 mg/kg) for 15 days (day: 0-15), subsequently administered with DEN (200 mg/kg) and continuously treated with DPDS for another 7 days, (days:15-21). Behavioural tests (OFT- using the open field test; NORT- novel object recognition test; FST- forced swimming test and Y-maze) were conducted from days 19-21, followed by biochemical analysis of the hippocampus and prefrontal cortex for oxidative stress, inflammation, neurotransmitter metabolic enzyme, and histopathology. DEN-treated rats exhibited decreased locomotor activity, spatial memory function and antioxidant activity, increased oxidative and nitration stress, anxiety, and depressive-like behaviour, causing histoarchitectural damage in prefrontal and hippocampal cortices. DPDS treatment (pre- and post-DEN exposure) significantly alleviated these neurotoxic, oxidative, and nitration effects, reversed DEN-induced histopathological alterations, and improved locomotive and cognitive functions. In conclusion, DPDS demonstrates potent neuroprotective effects against DEN-induced toxicity, likely through enhanced endogenous antioxidant capacity that mitigates oxido-nitrative damage. These findings suggest that the organo-selenium -DPDS- is a promising chemotherapeutic agent potent in alleviating DEN-mediated neurotoxicity and maintaining brain health.</p>","PeriodicalId":9031,"journal":{"name":"BMC Neuroscience","volume":"25 1","pages":"77"},"PeriodicalIF":2.4,"publicationDate":"2024-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11669237/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142891833","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}

{"title":"Variable and slow-paced neural dynamics in HVC underlie plastic song production in juvenile zebra finches.","authors":"Linda Bistere, Stefan Wilczek, Daniela Vallentin","doi":"10.1186/s12868-024-00915-7","DOIUrl":"10.1186/s12868-024-00915-7","url":null,"abstract":"<p><p>Zebra finches undergo a gradual refinement of their vocalizations, transitioning from variable juvenile songs to the stereotyped song of adulthood. To investigate the neural mechanisms underlying song crystallization-a critical phase in this developmental process-we performed intracellular recordings in HVC (a premotor nucleus essential for song learning and production) of juvenile birds. We then compared these recordings to previously published electrophysiological data from adult birds. We found that HVC projection neurons in juvenile zebra finches during the song crystallization phase exhibited more variable spiking patterns compared to the precise bursting observed in adult HVC projection neurons. Additionally, subthreshold membrane potential fluctuations in juvenile neurons exhibited longer durations and larger amplitude excitatory postsynaptic potentials. These distinct temporal dynamics in HVC during song crystallization likely play a crucial role in the fine-tuning processes that shape the precise timing and structure of the mature zebra finch song.</p>","PeriodicalId":9031,"journal":{"name":"BMC Neuroscience","volume":"25 1","pages":"76"},"PeriodicalIF":2.4,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11667989/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142881162","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}

{"title":"The antioxidative effect of STAT3 involved in cellular vulnerability to isoflurane.","authors":"Yan Yang, Shiyu Song, Hongwei Wang, Zhengliang Ma, Qian Gao","doi":"10.1186/s12868-024-00911-x","DOIUrl":"10.1186/s12868-024-00911-x","url":null,"abstract":"<p><strong>Background: </strong>The vulnerable period to neurotoxicity of isoflurane overlaps with a developmental stage characterized by programmed neuronal death. STAT3 has been identified as a crucial molecule involved in survival pathways during this period. We aimed to investigate the role of STAT3 in cellular vulnerability to isoflurane.</p><p><strong>Methods: </strong>C57/BL6 mice on postnatal day 7 or 21, primary neurons derived from mice embryos at gestational days 14-16 and cultured for 5 or 14 days, as well as human neuroglioma U251 cells were treated with isoflurane. A plasmid containing human wild-type STAT3, STAT3 anti-sense oligonucleotide, STAT3 specific inhibitor STA21, proteasome inhibitor MG-132 and calcineurin inhibitor FK506 were utilized to evaluate the influence of STAT3 levels on isoflurane-induced cytotoxicity. The levels of Western blot results, mRNA, intracellular ROS, apoptotic rate, and calcineurin activity were analyzed using unpaired Student's t-test or one-way ANOVA followed by Bonferroni post hoc test, as appropriate.</p><p><strong>Results: </strong>Elevated levels of STAT3, reduced activity of calcineurin, as well as a diminished response to isoflurane-induced calcineurin activation and neuroapoptosis were observed in more mature brain or neurons. Isoflurane accelerated the degradation of ubiquitin-conjugated proteins but did not facilitate ubiquitin conjugation to proteins. STAT3 was of particular importance in the all ubiquitin-conjugated proteins degraded by isoflurane. Knockdown or inhibition of STAT3 nuclear translocation exacerbated isoflurane-induced oxidative injury and apoptosis, while STAT3 overexpression mitigated these effects. Finally, this study demonstrated that FK506 pretreatment mitigated the apoptosis, ROS accumulation, and the impairment of neurite growth in primary neurons after exposed to isoflurane.</p><p><strong>Conclusions: </strong>These findings indicate that specific regulation of STAT3 was closely related with the cellular vulnerability to isoflurane via an antioxidative pathway.</p>","PeriodicalId":9031,"journal":{"name":"BMC Neuroscience","volume":"25 1","pages":"75"},"PeriodicalIF":2.4,"publicationDate":"2024-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11619428/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142779254","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}

{"title":"Older is order: entropy reduction in cortical spontaneous activity marks healthy aging.","authors":"Da Chang, Xiu Wang, Yaojing Chen, Zhuo Rachel Han, Yin Wang, Bing Liu, Zhanjun Zhang, Xi-Nian Zuo","doi":"10.1186/s12868-024-00916-6","DOIUrl":"10.1186/s12868-024-00916-6","url":null,"abstract":"<p><strong>Background: </strong>Entropy trajectories remain unclear for the aging process of human brain system due to the lacking of longitudinal neuroimaging resource.</p><p><strong>Results: </strong>We used open data from an accelerated longitudinal cohort (PREVENT-AD) that included 24 healthy aging participants followed by 4 years with 5 visits per participant to establish cortical entropy aging curves and distinguish with the effects of age and cohort. This reveals that global cortical entropy decreased with aging, while a significant cohort effect was detectable that people who were born earlier showed higher cortical entropy. Such entropy reductions were also evident for large-scale cortical networks, although with different rates of reduction for different networks. Specifically, the primary and intermediate networks reduce their entropy faster than the higher-order association networks.</p><p><strong>Conclusions: </strong>Our study confirmed that cortical entropy decreases continually in the aging process, both globally and regionally, and we conclude two specific characteristics of the entropy of the human cortex with aging: the shift of the complexity hierarchy and the diversity of complexity strengthen.</p>","PeriodicalId":9031,"journal":{"name":"BMC Neuroscience","volume":"25 1","pages":"74"},"PeriodicalIF":2.4,"publicationDate":"2024-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11616130/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142765989","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}

{"title":"A rat model establishment of bronchopulmonary dysplasia-related lung & brain injury within 28 days after birth.","authors":"Xin Lin, Meicen Zhou, Hua Wang","doi":"10.1186/s12868-024-00912-w","DOIUrl":"10.1186/s12868-024-00912-w","url":null,"abstract":"<p><strong>Purpose: </strong>Lung injury associated with bronchopulmonary dysplasia (BPD) and its related neurodevelopmental disorders have garnered increasing attention in the context of premature infants. Establishing a reliable animal model is essential for delving into the underlying mechanisms of these conditions.</p><p><strong>Methods: </strong>Newborn rats were randomly assigned to two groups: the hyperoxia-induced BPD group and the normoxia (NO) group. For the BPD group, they were nurtured in a hyperoxic environment with a high oxygen inspired fraction (0.85) from birth until day 14 within 28 days postnatally. In contrast, the NO group consisted of newborn rats that were nurtured in a normoxic environment with a standard oxygen inspired fraction (0.21) for 28 days postnatally. Various pathological sections of both lung and brain tissues were examined. TUNEL staining, immunofluorescence assays, and functional tests were performed, and the results were meticulously analyzed to assess the impact of hyperoxia environments on the developing organs.</p><p><strong>Results: </strong>In the newborn rats of the BPD group, a significant reduction in alveolar number coupled with enlargement was observed, alongside severe fibrosis, collagen deposition, and constriction of bronchi and vascular lumens. This was accompanied by an accumulation of inflammatory cells and a marked deterioration in lung function compared to the NO group (P < 0.05). Additionally, a decrease in neuronal count, an increase in neuronal apoptosis, proliferation of neuroglia cells, and demyelination were noted, and poorer performance in the Morris water maze test within the BPD group (P < 0.05).</p><p><strong>Conclusion: </strong>The BPD-rats model was established successfully. Lung injury in the BPD group evident across the bronchi to the alveoli and pulmonary vessels, which was associated with deteriorated lung function at postnatal day 14. Concurrently, brain injury extended from the cerebral cortex to the hippocampus, which was associated with impaired performance in orientation navigation and spatial probe tests at postnatal day 28.</p>","PeriodicalId":9031,"journal":{"name":"BMC Neuroscience","volume":"25 1","pages":"73"},"PeriodicalIF":2.4,"publicationDate":"2024-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11603889/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142749825","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}

{"title":"Does choline have an effect on Transient Global Amnesia (TGA)?","authors":"Sasan Rahmanian, Mahsa Shapouri, Mohammad Keshavarz Mohammadian, Zahra Mahmoudi, Zahra Saeedirad, Khadijeh Abbasi Mobarakeh, Abdolrahman Parhiz, Soheila Shekari, Asma Rajabi Harsini, Neda Valisoltani, Sara Khoshdooz, Saeid Doaei, Akram Kooshki, Maryam Gholamalizadeh","doi":"10.1186/s12868-024-00898-5","DOIUrl":"10.1186/s12868-024-00898-5","url":null,"abstract":"<p><strong>Background: </strong>Choline was frequently reported to have some beneficial effects on memory function. However, the association of dietary choline with different types of amnesia is not well understood. The objective of this study was to examine the association between dietary intake of choline and transient global amnesia (TGA).</p><p><strong>Methods: </strong>This case-control study was carried out on 258 patients with TGA and 520 participants without amnesia. Data on dietary choline intake was collected using a validated food frequency questionnaire (FFQ). All participants were examined for amnesia by a neurologist according to the Kaplan and Hodges criteria.</p><p><strong>Results: </strong> There was an inverse association between TGA and dietary choline intake after adjustment for age and gender (OR: 0.98, CI 95% 0.96-0.98, P = 0.03). The association remained significant after additional adjusting for physical activity, body mass index (BMI), occupation, marital status, smoking, and drinking alcohol (OR: 0.98, CI 95% 0.96-0.99, P = 0.04) and after further adjustment for calorie and food groups intake (OR: 0.98, CI 95% 0.96-0.99, P = 0.03).</p><p><strong>Conclusion: </strong>The results of this study indicated that choline may have beneficial effects against TGA. Further longitudinal studies are warranted.</p>","PeriodicalId":9031,"journal":{"name":"BMC Neuroscience","volume":"25 1","pages":"72"},"PeriodicalIF":2.4,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11575108/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142666977","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}

{"title":"Effect and mechanism of Tetramethylpyrazine in repair of sciatic nerve injury in rats.","authors":"Yang Li, Yujie Li, Guan Wang, Yao Li, Naiqiang Zhuo","doi":"10.1186/s12868-024-00897-6","DOIUrl":"10.1186/s12868-024-00897-6","url":null,"abstract":"<p><strong>Objective: </strong>Observing the effects of Tetramethylpyrazine (TMP) on the expression of Collagen IV and Laminin in neurovascular basement membrane and the apoptosis of vascular endothelial cells, and to study the mechanism of TMP in the treatment of sciatic nerve injury.</p><p><strong>Results: </strong>Compared with the NS group, the TMP group had a significant increase in the sciatic nerve function index (P < 0.01).The miss times in TMP group was significantly lower than that in NS group (P < 0.01). The HE staining results of the TMP group showed irregular arrangement of some neuronal axons and Schwann cells, and more edema and rupture of cells. The proliferation of glial cells and inflammatory cells was significantly increased in TMP group. The results of immunohistochemistry showed that the expression of type IV collagen and laminin in the TMP group group was distributed around the blood vessels, vascular endothelial cells, basal membrane and glial cells after SNI. The expression of type IV collagen and laminin in TMP group increased significantly(P < 0.05). Immunofluorescence showed that compared with NS group, the apoptosis rate of TMP group was significantly decreased (P < 0.01). Flow cytometry results showed that compared with the NS group, the number of CECs in the TMP group was significantly decreased (P < 0.01).</p><p><strong>Conclusions: </strong>TMP can effectively improve the sciatic nerve functional index (SFI) of Sprague Dawley (SD) rats, enhance the proliferation of sciatic nerve vascular endothelial cells, reduce apoptosis, promote the expression of Collagen IV and Laminin in sciatic nerve microvascular basal membrane components, thereby promoting angiogenesis and improving lower limb function in rats.</p>","PeriodicalId":9031,"journal":{"name":"BMC Neuroscience","volume":"25 1","pages":"71"},"PeriodicalIF":2.4,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11562523/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142614013","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}

{"title":"Retraction Note: 27-Hydroxycholesterol increases α-synuclein protein levels through proteasomal inhibition in human dopaminergic neurons.","authors":"Jared Schommer, Gurdeep Marwarha, Trevor Schommer, Travis Flick, Jonah Lund, Othman Ghribi","doi":"10.1186/s12868-024-00910-y","DOIUrl":"10.1186/s12868-024-00910-y","url":null,"abstract":"","PeriodicalId":9031,"journal":{"name":"BMC Neuroscience","volume":"25 1","pages":"70"},"PeriodicalIF":2.4,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11542229/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142603185","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}

{"title":"The cognitive neuroscience and neurocognitive rehabilitation of dance.","authors":"Madeleine Eve Hackney, Agnieszka Zofia Burzynska, Lena H Ting","doi":"10.1186/s12868-024-00906-8","DOIUrl":"10.1186/s12868-024-00906-8","url":null,"abstract":"<p><p>Creative movement, in the form of music- and dance-based exercise and rehabilitation, can serve as a model for learning and memory, visuospatial orientation, mental imagery, and multimodal sensory-motor integration. This review summarizes the advancement in cognitive neuroscience aimed at determining cognitive processes and brain structural and functional correlates involved in dance or creative movement, as well as the cognitive processes which accompany such activities. We synthesize the evidence for the use of cognitive, motor, and cognitive-motor function in dance as well as dance's potential application in neurological therapy and neurorehabilitation. Finally, we discuss how partnered interaction and sensorimotor integration in dance, and \"dancing robots\" could shed light on future application of dance as rehabilitation, of dance used in technology and potential mechanisms of benefit from dance-based activities.</p>","PeriodicalId":9031,"journal":{"name":"BMC Neuroscience","volume":"25 1","pages":"58"},"PeriodicalIF":2.4,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11539675/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142589351","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}

{"title":"Learning ballet technique modulates the stretch reflex in students with cerebral palsy: case series.","authors":"Citlali López-Ortiz, Maxine He, Deborah Gaebler-Spira, Mindy F Levin","doi":"10.1186/s12868-024-00873-0","DOIUrl":"10.1186/s12868-024-00873-0","url":null,"abstract":"<p><strong>Background: </strong>Cerebral palsy (CP) is considered the most prevalent developmental motor disorder in children. There is a need for training programs that enhance motor abilities and normalize function from an early age. Previous studies report improved motor outcomes in dance interventions for CP. Investigating the neurophysiological mechanisms underlying such improvements is necessary for efficient and safe intervention design. This study reports changes in stretch reflex responses as the primary neurophysiological motor outcome of a targeted ballet class intervention.</p><p><strong>Results: </strong>A case series of participants with mixed spastic and dyskinetic CP (n = 4, mean age = 12.5 years, SD = 6.9S years, three female, one male) who learned ballet technique in a course of one-hour classes twice per week for six weeks is presented. Changes in stretch reflex responses and in clinical motor tests as secondary outcomes were observed after the course and at one-month follow-up. Quantitative measures of elbow or ankle stretch reflex were obtained using electromyography and electrogoniometry. The joint angle of the stretch reflex onset varied across velocities of stretch, and its variability decreased after the intervention. Within-subject tests of the central tendency of stretch reflex angle coefficients of variation and frequency distribution demonstrated significant changes (p-values < 0.05). Secondary outcomes included the Quality of Upper Extremity Skills Test (QUEST), Pediatric Balance Scale (PBS), Modified Tardieu Scale (MTS), Dyskinesia Impairment Scale (DIS), and Selective Control Assessment of the Lower Extremity (SCALE). All the participants demonstrated improvements larger than the minimal clinical important difference (MCID) or the smallest detectable difference (SDD), as applicable.</p><p><strong>Conclusions: </strong>Evidence of changes in the stretch reflex responses in these four cases of mixed CP was observed. The observed variability in the stretch reflex responses may be due to the dyskinetic component of the mixed CP presentations. More studies with a larger sample size and longer duration of learning and practice of ballet technique are necessary to establish the extent of possible modulation and adaptation of the stretch reflex response as a neurophysiological basis for observed improvements in clinical measures.</p><p><strong>Trial registration: </strong>This study was registered in the Clinical Trials Protocol Registration and Results System (NCT04237506, January 17, 2020).</p>","PeriodicalId":9031,"journal":{"name":"BMC Neuroscience","volume":"25 1","pages":"66"},"PeriodicalIF":2.4,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11539840/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142589418","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}