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Abstract Introduction Despite the developing technology of cochlear implants (CIs), implanted prelingual hearing-impaired children exhibit variable speech processing outcomes. When these children match in personal and implant-related criteria, the CI outcome variability could be related to higher-order cognitive impairment. Objectives To evaluate different domains of cognitive function in good versus poor CI performers using a multidisciplinary approach and to find the relationship between these functions and different levels of speech processing. Methods This observational, cross-sectional study used the word recognition score (WRS) test to categorize 40 children with CIs into 20 good (WRS/65%) and 20 poor performers (WRS < 65%). All participants were examined for speech processing at different levels (auditory processing and spoken language) and cognitive functioning using (1) verbal tests (verbal component of Stanford-Binet intelligence [SBIS], auditory memory, auditory vigilance, and P300); and (2) performance tasks (performance components of SBIS, and trail making test). Results The outcomes of speech processing at different functional levels and both domains of cognitive function were analyzed and correlated. Speech processing was impaired significantly in poor CI performers. This group also showed a significant cognitive function deficit, in which the verbal abilities were more affected (in 93.5%) than in the good performers (in 69.5%). Moreover, cognitive function revealed a significant correlation and predictive effect on the CI speech outcomes. Conclusion Cognitive function impairment represented an important factor that underlies the variable speech proficiency in cochlear-implanted children. A multidisciplinary evaluation of cognitive function would provide a comprehensive overview to improve training strategies.
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Abstract Background Cerebral changes occur in individuals with human T-cell leukemia virus type 1 (HTLV-1 )-associated myelopathy (HAM) and seem to predominate in subcortical areas. Little is known about the cognitive decline in the elderly living with HTLV-1. Objective To evaluate the cognitive aging of individuals infected with HTLV-1 aged ≥ 50 years. Methods This is a cross-sectional study of former blood donors infected with HTLV-1 who have been followed in the cohort of the Interdisciplinary Research Group on HTLV-1 since 1997. The groups of study consisted of 79 HTLV-1 infected individuals aged ≥ 50 years, with 41 of them presenting symptomatic HAM and 38 being asymptomatic carriers, and 59 seronegative individuals (controls) aged ≥ 60 years. All were submitted to the P300 electrophysiological test and neuropsychological tests. Results Individuals with HAM presented delayed P300 latency in relation to the other groups, and this latency delay increased progressively with aging. The performance of this group in the neuropsychological tests was also the worst. The HTLV-1- asymptomatic group performance was similar to that of the control group. Conclusions Individuals with HAM presented cognitive decline that progressed with aging and, although HTLV-1-asymptomatic carriers appear to present cognitive aging similar to that of healthy elderly people, concern about a subclinical cognitive impairment is warranted in this population.
Resumo Antecedentes Alterações cerebrais ocorrem em indivíduos com mielopatia associada ao vírus da leucemia de células T humanas tipo 1 (HTLV-1) (HAM) e parecem predominar em áreas subcorticais. Pouco se sabe sobre o declínio cognitivo em idosos vivendo com HTLV-1. Objetivo Avaliar o envelhecimento cognitivo de indivíduos infectados pelo HTLV-1 com idade ≥ 50 anos. Métodos Trata-se de um estudo transversal com ex-doadores de sangue infectados pelo HTLV-1 acompanhados na coorte do Grupo Interdisciplinar de Pesquisa em HTLV-1 há 20 anos. Os grupos de estudo foram compostos por 79 indivíduos infectados pelo HTLV-1 com idade ≥ 50 anos, sendo que 41 apresentavam HAM e 38 eram portadores assintomáticos, e 59 indivíduos soronegativos (controles) com idade ≥ 60 anos. Todos foram submetidos ao teste eletrofisiológico P300 e testes neuropsicológicos. Resultados Indivíduos com HAM apresentaram atraso na latência do P300 em relação aos demais grupos, e esse atraso de latência aumentou progressivamente com o envelhecimento. O desempenho desse grupo nos testes neuropsicológicos também foi o pior. O desempenho do grupo HTLV-1- assintomático foi semelhante ao do grupo controle. Conclusão Indivíduos com HAM apresentaram declínio cognitivo que progrediu com o envelhecimento e, embora os portadores assintomáticos do HTLV-1 pareçam apresentar envelhecimento cognitivo semelhante ao dos idosos saudáveis, justificase a preocupação com um comprometimento cognitivo subclínico nessa população.
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@#Parkinson disease (PD) is a common neurodegenerative disease. Cognitive dysfunction seriously affects the quality of life of patients with PD, increasing their family burden. Currently, there are no clinically identified biomarkers to assist with the early diagnosis of cognitive impairment in patients with PD. Event-related potential P300 is a sensitive electrophysiological indicator to detect early insidious cognitive decline in PD. This article reviews the diagnostic value and clinical application of P300 for cognitive impairment in patients with PD.
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@#Objective To investigate the difference in event-related potential P300 between the patients with chronic insomnia disorder and the health population. Methods P300 was collected and analyzed for 26 healthy volunteers and 26 patients with chronic insomnia disorder,and 20 electrode caps were worn according to the standard position of international 10~20 system for EEG scalp recording. The auditory Oddball model and MATLAB software were used for data analysis,and the amplitude and latency of P300 were compared between the two groups. Results Compared with the healthy volunteers,the patients with chronic insomnia disorder had lower amplitudes of Fz,Cz,and Pz electrodes,with significant differences at Fz and Pz electrodes (P<0.05). There was an increase in latency without statistical significance (P>0.05). Conclusion There is a difference in P300 between healthy volunteers and patients with chronic insomnia disorder,which may be associated with the cognitive function of patients with chronic insomnia disorder.
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Patients with amyotrophic lateral sclerosis ( ALS ) often have difficulty in expressing their intentions through language and behavior, which prevents them from communicating properly with the outside world and seriously affects their quality of life. The brain-computer interface (BCI) has received much attention as an aid for ALS patients to communicate with the outside world, but the heavy device causes inconvenience to patients in the application process. To improve the portability of the BCI system, this paper proposed a wearable P300-speller brain-computer interface system based on the augmented reality (MR-BCI). This system used Hololens2 augmented reality device to present the paradigm, an OpenBCI device to capture EEG signals, and Jetson Nano embedded computer to process the data. Meanwhile, to optimize the system's performance for character recognition, this paper proposed a convolutional neural network classification method with low computational complexity applied to the embedded system for real-time classification. The results showed that compared with the P300-speller brain-computer interface system based on the computer screen (CS-BCI), MR-BCI induced an increase in the amplitude of the P300 component, an increase in accuracy of 1.7% and 1.4% in offline and online experiments, respectively, and an increase in the information transfer rate of 0.7 bit/min. The MR-BCI proposed in this paper achieves a wearable BCI system based on guaranteed system performance. It has a positive effect on the realization of the clinical application of BCI.
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Humans , Amyotrophic Lateral Sclerosis , Brain-Computer Interfaces , Quality of Life , Event-Related Potentials, P300 , Wearable Electronic DevicesABSTRACT
Glioblastoma (GBM), characterized by rapid progression, easy recurrence and treatment resistance, is the most aggressive and lethal tumor of the central nervous system. Adenovirus E1A binding protein p300 (p300) serves rich functions as transcriptional coactivator and lysine acetyltransferase. Studies have shown that p300 plays an important role in the occurrence, proliferation, invasion and resistance to chemoradiotherapy of GBM. This paper reviews the structure and function of p300, and systematically expounds its various ways participating in GBM development and its translational perspectives, so as to provide references for GBM study.
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Children′s neurological diseases can cause problems in structure and function of the brain, which is often accompanied by cognitive impairment.They have a great influence on children′s intellectual development and social life, so assessing cognitive function earlier is particularly significant.Event-related potential(ERP)P300 is an important electrophysiological technique in clinical practice.Compared with other evaluation methods, P300 has the advantages of objective, repeatable and non-invasive.P300 has a good effect in the assessment of children with neurological diseases and cognitive impairment, which provides a reference for clinical diagnosis, treatment and prognosis.This article reviews the research progress of P300 in children with common neurological diseases and cognitive impairment, in order to improve the understanding of clinical workers.
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Abstract Introduction The number of stimuli is important to determine the quality of auditory evoked potential records. However, there is no consensus on that number in studies, especially in the sample studied. Objectives To investigate the influence of the number of rare stimuli on forming N2 and P3 components, with different types of acoustic stimuli. Methods Cross-sectional, descriptive, comparative study, approved by the ethics committee of the institution. The sample comprised 20 normal hearing adults of both sexes, aged 18 to 29 years old, with normal scores in the mental state examination and auditory processing skills. The event-related auditory evoked potentials were performed with nonverbal (1 kHz versus 2 kHz) and verbal stimuli (/BA/ versus /DA/). The number of rare stimuli varied randomly in the recordings, with 10, 20, 30, 40, and 50 presentations. Results P3 latency was significantly higher for nonverbal stimuli with 50 rare stimuli. N2 latency did not show any difference between the type and number of stimuli. The absolute P3 and N2-P3 amplitudes showed significant differences for both types of stimuli, with higher amplitude for 10 rare stimuli, in contrast with the other ones. The linear tendency test indicated significance only for the amplitude - as the number of rare stimuli increased, the amplitude tended to decrease. Conclusion The components were identifiable in the different numbers of rare stimuli and types of stimuli. The P3 and N2-P3 latency and amplitude increased with fewer verbal and nonverbal stimuli. Recording protocols must consider the number of rare stimuli.
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Abstract Background In the past twenty years, there has been an increasing interest among neuroscientists and physicians in mapping the cortical areas involved in the epileptogenic zone (EZ) through event-related potentials (ERPs) that enable the evaluation of the functional preservation of these areas. The present review is an update on publications on this topic. Objective To investigate the accuracy of the cognitive evoked of the medial temporal lobe P300 (MTL-P300) potential in detecting the EZ in temporal lobe epilepsy (TLE). Methods The systematic review of articles on the PubMed, Embase and Lilacs databases was conducted between February and December 2020. Articles published in English from 1985 to December 2020 were included. Additional studies were identified by searching the references of the selected studies and review articles. The studies were included for the following reasons: in-depth intracranial electroencephalography (iEEG) analysis of hippocampal activity; investigations of patients with TLE; and correlations between regarding the ERP results obtained in the temporal regions (MTL-P300) and the EZ. Results In the three studies analyzed, the authors were able to define the laterality of the EZ during the preoperative investigation through the MTL-P300 results. The sensitivity of this method was of ~ 70% to 80%, and the specificity between 70% and 94.7%. One of the limitations of the present review was the low number of studies. Conclusion There is evidence that the reduced amplitude of the MTL-P300 has high specificity in identifying the EZ, and this is a good marker for diagnosis in unilateral TLE. The low sensitivity and negative likelihood ratios negative that a normal MTL-P300 response does not exclude the epileptogenicity of the hippocampus.
Resumo Antecedentes Nos últimos 20 anos, tem havido um crescente interesse de neurocientistas e médicos em mapear áreas corticais envolvidas na zona epileptogênica (ZE) por meio de potenciais relacionados a eventos (PREs), que permitem avaliar a preservação funcional dessas áreas. Esta revisão é uma atualização das publicações sobre esse tema. Objetivo Investigar a acurácia do potencial evocado cognitivo do lobo temporal medial P300 (medial temporal lobe P300, MTL-P300, em inglês) na detecção da ZE em casos de epilepsias do lobo temporal (ELT). Métodos A revisão sistemática de artigos nas bases de dados PubMed, Embase e Lilacs foi realizada entre fevereiro e dezembro de 2020. Foram incluídos artigos publicados em inglês de 1985 a dezembro de 2020. Estudos adicionais foram identificados por meio de busca nas referências dos estudos selecionados e artigos de revisão. Os estudos foram incluídos pelas seguintes razões: análise detalhada por meio de eletroencefalografia intracraniana (iEEG) da atividade hipocampal; investigações de pacientes com ELT; e correlações entre os resultados de ERP obtidos nas regiões temporais (MTL-P300) e na ZE. Resultados Nos três estudos analisados, os autores foram capazes de definir a lateralidade da ZE durante a investigação pré-operatória por meio dos resultados do MTL-P300. A sensibilidade deste método foi de 70% a 80%, e a especificidade, entre 70% e 94.7%. Uma das limitações desta revisão foi o baixo número de estudos. Conclusão Há evidências de que a amplitude reduzida do MTL-P300 tem alta especificidade na identificação da ZE, e este é um bom marcador para o diagnóstico na ELT unilateral. A baixa sensibilidade e a razão de verossimilhança negativa indicam que a resposta MTL-P300 normal não exclui a epileptogenicidade do hipocampo.
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Abstract Objective: There are few studies on long-latency auditory evoked potential (P300) in people with hearing loss who use a cochlear implant. Central auditory system evaluation with behavioral and electrophysiological tests is believed to help understand the neuroplasticity mechanisms involved in auditory functioning after cochlear implant surgery. This study investigated the electrophysiological processing of cortical level acoustic signals in a group of 21 adult individuals with postlingual bilateral severe-to-profound hearing loss who were submitted to cochlear implant surgery. Methods: Data were collected in three phases: pre-cochlear implant surgery, at cochlear implant activation, and 6 months after surgery. P300 measures were also registered during all phases. Tone-burst and speech stimuli were used to elicit P300 and were presented in free field. Results: Mean P3 component latency with tone-burst and speech stimuli were 352.9 and 321.9 ms in the pre-cochlear implant phase, 364.9 and 368.7 ms in the activation phase, 336.2 and 343.6 ms 6 months after the surgery. The P3 component mean latency values using tone-burst at activation were significantly different from those 6 months after cochlear implant. They were also significantly different using speech, between pre-cochlear implant and activation phases. Lower P3 component latency occurred 6 months after cochlear implant activation with tone-burst and pre-cochlear implant with speech stimulus. There was a weak correlation between mean P3 component latency with speech stimulus and time of hearing loss. There was no difference in amplitude between phases or in the comparison with the other variables. Conclusion: There were changes in P3 component latency during the period assessed, for both speech and pure-tone stimuli, with increased latency in the activation phase and similar lower results in the two other phases, Pre-CI and 6 months after CI use. Mean amplitude measures did not vary in the three phases.
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Abstract Objective: Tinnitus can result from auditory system reorganization due to neural activity dysfunctions. Auditory stimulation can cause temporary or persistent tinnitus alleviation by altering the neural generators. The present study investigated the changes in Late-Latency Auditory Evoked Potentials (LLAEPs) after tinnitus suppression using auditory stimulation with short-term Residual Inhibition (RI) and long-term Tinnitus Masker (TM). Methods: The study included 40 participates with equal numbers in the Tinnitus Group (TG), including the chronic tinnitus subjects, and the Control Group (CG), including matched volunteers. The participants had normal hearing in conventional audiometry. All the participants underwent LLAEP recording pre-intervention and after a one-minute auditory stimulation (RI), as well as a pre-intervention Dichotic Digit Test (DDT) as a behavioral assessment of the selective attention. Moreover, TG underwent a 3-month course of TM, a third LLAEP recording post-TM, a second DDT post-TM, and the Tinnitus Handicap Inventory (THI) before and after the TM. Results: In the baseline LLAEP recording, the TG had significantly later N1, P3a, and P3b latencies, as well as significantly lower P3a and P3b amplitudes. The second LLAEP recording showed a significant intragroup increase in P3a amplitude and a significant decrease in P3a latency in the TG, while no significant intragroup difference was observed in the CG. In the third LLAEP recording performed on TG, the P3a amplitude and latency had significant changes compared to the second recording, while the N1 latency was significantly decreased. Moreover, the DDT and THI scores had significant improvement after the TM in TG. Conclusions: The present study showed the neurophysiological changes after short-term (RI) and long-term (TM) auditory stimulations in tinnitus subjects. The LLAEP changes suggest that these interventions lead to tinnitus suppression through common mechanisms. The electrophysiological observation was also confirmed using behavioral assessments. Level of evidence: This study type is a "comparative study" with the level of evidence "3".
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Abstract Introduction Parkinson disease (PD) is a degenerative and progressive neurological disorder characterized by resting tremor, stiffness, bradykinesia, and postural instability. Despite the motor symptoms, PD patients also consistently show cognitive impairment or executive dysfunction. The auditory event-related potential P300 has been described as the best indicator of mental function, being highly dependent on cognitive skills, including attention and discrimination. Objective To review the literature on the application and findings of P300 as an indicator of PD. Data Analysis The samples ranged from 7 to 166 individuals. Young adult and elderly male patients composed most study samples. The Mini-Mental State Examination test, the Unified Parkinson Disease Rating Scale, and the Hoehn and Yahr Scale were used to assess neurological and cognitive function. In terms of testing hearing function, few studies have focused on parameters other than the P300. The factors we focused on were how the P300 was modified by cognitive effects, its correlation with different PD scales, the effect of performing dual tasks, the effect of fatigue, and the influence of drug treatments. Conclusion The use of the P300 appears to be an effective assessment tool in patients with PD. This event-related potential seems to correlate well with other neurocognitive tests that measure key features of the disease.
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The cell cycle inhibitor P21 has been implicated in cell senescence and plays an important role in the injury-repair process following lung injury. Pulmonary fibrosis (PF) is a fibrotic lung disorder characterized by cell senescence in lung alveolar epithelial cells. In this study, we report that P21 expression was increased in alveolar epithelial type 2 cells (AEC2s) in a time-dependent manner following multiple bleomycin-induced PF. Repeated injury of AEC2s resulted in telomere shortening and triggered P21-dependent cell senescence. AEC2s with elevated expression of P21 lost their self-renewal and differentiation abilities. In particular, elevated P21 not only induced cell cycle arrest in AEC2s but also bound to P300 and β-catenin and inhibited AEC2 differentiation by disturbing the P300-β-catenin interaction. Meanwhile, senescent AEC2s triggered myofibroblast activation by releasing profibrotic cytokines. Knockdown of P21 restored AEC2-mediated lung alveolar regeneration in mice with chronic PF. The results of our study reveal a mechanism of P21-mediated lung regeneration failure during PF development, which suggests a potential strategy for the treatment of fibrotic lung diseases.
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Objective:To explore the clinical significance of event-related potential P300 in the diagnosis and treatment of cognitive function in patients with chronic insomnia combined with anxiety and depression.Methods:Sixty patients with chronic insomnia complicated with anxiety and depression treated in Wuhan First Hospital from October 2020 to March 2021 were selected as the observation group, and 60 healthy volunteers were selected as the control group in the same period.Hamilton anxiety scale (HAMA) and Hamilton depression scale (HAMD) were used to evaluate the anxiety and depression status of patients.Mini mental state examination (MMSE) and Montreal cognitive assessment scale (MoCA) were used to evaluate the cognitive function of the subjects.All subjects were tested for P300 event-related potential, and the latency and amplitude of P300 event-related potential were recorded.SPSS 25.0 software was used for statistical analysis.Independent sample t-test was used for comparison between groups.Pearson correlation analysis was used to analyze the correlation between cognitive function and P300 event-related potential. Results:The scores of HAMA ((16.65±5.10), (9.30±4.42)) and HAMD ((18.07±3.97), (8.48±3.21)) in the observation group were higher than those in the control group ( t=8.438, 14.545, both P<0.05), and the MoCA score (22.35±4.25) was lower than that(25.65±2.29) in the control group ( t=-5.291, P<0.05). In the eight dimensions of MoCA, the scores of visual space and executive ability ((3.38±1.46), (4.63±0.69)), naming ((2.37±0.78), (2.65±0.48)), language ((2.17±0.96), (2.53±0.81)) and delayed recall ((2.58±1.45), (4.17±0.85))in the observation group were lower than those in the control group ( t=-5.991, -2.394, -2.259, -7.292, all P<0.05). Compared with the control group, the latencies of P300 (N1, N2, P3) in the observation group were significantly prolonged ( t=3.281, 4.342, 4.492, all P<0.01). The latencies of P300 (N1, N2, P3) were positively correlated with HAMD score ( r=0.242, 0.301, 0.311, all P<0.05). The latencies of P300 (N2, P3) were positively correlated with HAMA score ( r=0.205, 0.207, both P<0.05). The latencies of P300 (N2, P3) were negatively correlated with the delayed recall score of MoCA ( r=-0.197, -0.236, both P<0.05). Conclusion:There are different degrees of cognitive impairment in patients with chronic insomnia combined with anxiety and depression.P300 in patients with chronic insomnia combined with anxiety and depression shows prolonged latency.P300 latency is related to depression, anxiety and cognition in patients with chronic insomnia combined with anxiety and depression.Event-related potential P300 may be used as a neurophysiological objective evaluation tool for cognitive impairment in patients with chronic insomnia combined with anxiety and depression.
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OBJECTIVE@#To investigate the role of acetylated modification induced by coactivator p300 in lipopolysaccharide (LPS)- induced inflammatory mediator synthesis and its molecular mechanism.@*METHODS@#Agilent SurePrint G3 Mouse Gene Expression V2 microarray chip and Western blotting were used to screen the molecules whose expression levels in mouse macrophages (RAW246.7) were correlated with the stimulation intensity of LPS. Electrophoretic mobility shift assay (EMSA) and chromatin immunoprecipitation (chip-qPCR) were used to verify the binding of the molecules to the promoters of IL-6 and TNF-α genes. The effects of transfection of RAW246.7 cells with overexpression or interfering plasmids on IL-6 and TNF-α synthesis were evaluated with ELISA, and the binding level of the target molecules and acetylation level of H3K27 in the promoter region of IL-6 and TNF-α genes were analyzed by chromatin immunoprecipitation sequencing technique (chip-seq).@*RESULTS@#Gene microarray chip data and Western blotting both confirmed a strong correlation of p300 expression with the stimulation intensity of LPS. Immunocoprecipitation confirmed the binding between p300 and c-myb. The results of EMSA demonstrated that c-myb (P < 0.05), but not p300, could directly bind to the promoter region of IL-6 and TNF-α genes; p300 could bind to the promoters only in the presence of c-myb (P < 0.05). The expressions of p65, p300 and c-myb did not show interactions. Both p300 overexpression and LPS stimulation could increase the level of promoter-binding p300 and H3K27 acetylation level, thus promoting p65 binding and inflammatory gene transcription; such effects were obviously suppressed by interference of c-myb expression (P < 0.05). Interference of p65 resulted in inhibition of p65 binding to the promoters and gene transcription (P < 0.05) without affecting p300 binding or H3K27 acetylation level.@*CONCLUSION@#LPS can stimulate the synthesis of p300, whose binding to the promoter region of inflammatory genes via c-myb facilitates the cohesion of p65 by inducing H3K27 acetylation, thus promoting the expression of the inflammatory genes.
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Animals , Mice , Acetylation , Inflammation Mediators , Interleukin-6/metabolism , Lipopolysaccharides/pharmacology , Tumor Necrosis Factor-alpha/metabolismABSTRACT
Objective:To observe the utility of event-related potential P300 in diagnosing post-stroke cognitive impairment.Methods:Forty-nine stroke survivors at high risk of cognitive impairment formed the observation group, while 54 healthy volunteers were the control group. General clinical data and Montreal Cognitive Assessment Scale (MoCA) scores were compiled for all of the subjects, and the two groups′ P300 latencies, amplitudes and mean reaction times (MRTs) were compared. A total MoCA score <26 (corrected for education level) was taken as the diagnostic criterion for cognitive impairment. The receiver operating characteristics (ROC) curve was employed to analyze the diagnostic efficacy of P300 for post-stroke cognitive impairment and determine the diagnostic cutoff.Results:(1) The average MoCA score, P300 latency and P300 MRT of the observation group were all significantly different from the control group′s averages. There was, however, no significant difference between the two groups′ median P300 amplitudes. (2) According to the ROC curve analysis, the diagnostic limit of P300 latency was 376.50ms. With the area under the curve 0.795, sensitivity was 70.8% and specificity was 78.9%. The diagnosis cut-off value of P300 MRT was 423.35ms, with the area under the curve 0.695, giving a sensitivity of 80.0% and a specificity of 52.6%.Conclusions:Event-related potential P300 has useful efficacy in diagnosing post-stroke cognitive impairment.
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ObjectiveTo explore the application value of event-related potential P300 in the evaluation of cognitive dysfunction in patients with traumatic brain injury. MethodsFrom January to September 2021, a total of 36 patients with traumatic brain injury who were conservatively treated in the Neurosurgery Department of the Third Hospital of Mianyang and met the diagnostic criteria were selected as the experimental group. And 36 participants were recruited from the family members and carers of other patients in the hospital as the control group. Oddball paradigm was used to measure the event-related potential P300. Montreal Cognitive Assessment (MoCA) and Mini-Mental State Examination (MMSE) were used to assess the cognitive function of the subjects. The latency and amplitude of P300, MoCA and MMSE scores were compared between two groups. The detection rates of P300 latency, MoCA and MMSE on cognitive dysfunction in patients with traumatic brain injury were compared. ResultsMoCA and MMSE scores in experimental group were lower than those in control group [(18.08±4.29) vs. (27.36±1.20), (22.53±3.54) vs. (28.11±1.09), t=-12.510, -9.041, P<0.05]. The latency of P300 in experimental group was higher than that in control group [(406.08±26.95)ms vs. (367.08±22.50)ms, t=6.665, P<0.05], and the amplitude was lower than that in control group [(7.76±0.90)μV vs.(9.87±0.99)μV, t=-9.459, P<0.05]. In experimental group, the positive detective rate of P300 latency and MoCA on cognitive dysfunction were higher than that in MMSE (χ2=5.675, 7.604, P<0.05). ConclusionEvent-related potential P300 can be used as an objective clinical indicator for evaluating cognitive dysfunction in patients with traumatic brain injury.
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ObjectiveTo investigate the P300 evoked by Stroop Color Word Task in children with emotional neglect, and to explore their implication for inhibition control. MethodsA cluster sampling was conducted for the first grade students of a middle school in Sanmenxia City, Henan Province. The students from 3 classes were assessed by standard Raven reasoning test and Child Neglect Scale (CNS), and a total of 147 eligible students were screened out. Children were divided into the emotional neglect group (n=40) and the control group (n=40) according to the 27% before and after the score of CNS emotional neglect factor. Both groups completed the Stroop Color word task, and EEG data were collected to compare the response time, accuracy, amplitude and latency of P300 between the two groups. ResultsThe CNS total score and the scores of safety neglect, communication neglect, physical neglect and emotional neglect factors in the emotional neglect group were significantly higher than those in control group (t=15.003, 4.301, 11.495, 4.803, 23.957, P<0.01). The average reaction time in the incongruent task of emotional neglect group was significantly longer than that in the control group [(879.02±101.52) ms vs. (756.93±113.91) ms, t=5.061, P<0.01]. Under incongruent task, the average amplitude of P300 in emotional neglect group was lower than that of the control group [(3.97±1.12) μV vs. (8.71±1.24) μV, t=-17.976, P<0.01]. The average latency of P300 of emotional neglect group was longer than that of the control group [(361.81±39.69) ms vs. (301.35±33.67) ms, t=7.346, P<0.01]. ConclusionUnder incongruent task, children with emotional neglect had longer response time, longer latency and lower amplitude of P300, which suggested that children with affective neglect may have inhibition and control disorder.
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Objective:To compare the differences of event-related potential P300 and serum fibroblast growth factor 22 (FGF22) levels in cognitive impairment patients with first-episode and recurrent depression, and analyze the relations of each index with cognitive function and serum inflammatory factors.Methods:From June 2020 to April 2021, 45 cognitive impairment patients with first-episode depression (first-episode group) and 42 cognitive impairment patients with recurrent depression (recurrence group) were selected from our hospital. P300 examination was performed and serum FGF22, interleukin 6 (IL-6) and tumor necrosis factor α (TNF-α) levels were measured by enzyme-linked immunosorbent experiment (ELISA). The differences in clinical data, P300 examination results, and serum FGF22, IL-6 and TNF-α levels were compared between the two groups. The correlations of P300 amplitude and latency and serum FGF22 level with Montreal Cognitive Assessment (MoCA) scores and IL-6 and TNF-α levels were analyzed.Results:As compared with the first-episode group, the recurrence group had significantly decreased MoCA scores, P300 amplitude and serum FGF22 level, and statistically increased P300 latency and IL-6 and TNF-α levels ( P<0.05). Correlation analysis showed that P300 amplitude and serum FGF22 level were positively correlated with MoCA scores, and negatively correlated with IL-6 and TNF-α levels ( P<0.05); P300 latency was negatively correlated with MoCA scores, and positively correlated with IL-6 and TNF-α levels ( P<0.05). Conclusion:P300 amplitude and latency and serum FGF22 level are different between cognitive impairment patients with first-episode and recurrent depression, and they are correlated with the cognitive function and serum inflammatory factors.
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Objective:To investigate the predictive values of serum fibroblast growth factor 22 (FGF22) levels and electrical P300 in depression patients occurred mild cognitive impairment (MCI).Methods:A prospective study was performed. A total of 94 depression patients without cognitive impairment admitted to our hospital from January 2020 to August 2021 were chosen. These patients were followed up for one year; Hamilton Depression Scale (HAMD)-24 items and Montreal Cognitive Assessment Scale (MoCA) were used to evaluate the neuropsychological function of the patients every 3 months; according to the occurrence of MCI, the patients were divided into depression with MCI group ( n=57), and depression without MCI group ( n=32). All patients underwent baseline P300 examination and baseline serum FGF22 levels were detected by enzyme-linked immunosorbent assay (ELISA), and the differences in clinical data, P300 examination results and serum FGF22 levels were compared between the two groups. Correlation analysis was performed to analyze the correlations of P300 latency and serum FGF22 level with MoCA scores. Multivariate Logistic regression analysis was used to screen the independent influence factors for MCI in patients with depression. The predictive value of P300 latency and serum FGF22 level in MCI in patients with depression was analyzed by receiver operating characteristic (ROC) curve. Results:As compared with the depression without MCI group, patients in the depression with MCI group had significantly lower years of education and serum FGF22 level, and significantly higher proportion of patients living alone, and statistically higher P300 latency ( P<0.05). The results of correlation analysis showed that the MoCA scores at MCI period were positively correlated with serum FGF22 level ( r=0.665, P<0.001) and negatively correlated with P300 latency ( r=-0.621, P<0.001) in patients from the depression with MCI group. Multivariate Logistic regression analysis showed that serum FGF22 level was a protective factor for MCI in patients with depression ( OR=0.805, 95%CI: 0.737-0.862, P=0.003), and P300 latency was a risk factor for MCI in patients with depression ( OR=1.136, 95%CI: 1.115-1.163, P=0.001). ROC curve analysis showed that the areas under the curve (AUC) of serum FGF22 level, P300 latency, serum FGF22 level combined with P300 latency in predicting MCI in depression patients were 0.779, 0.724, and 0.852, respectively. Conclusion:The abnormal serum FGF22 level and P300 latency are closely related to the occurrence of MCI in patients with depression, and the combination of the two can be used to predict the occurrence of MCI in patients with depression.