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Subcortical alterations following pediatric posterior fossa brain tumor treatment: A longitudinal MRI study 儿童后窝脑肿瘤治疗后皮层下改变:一项纵向MRI研究
Q4 Neuroscience Pub Date : 2025-12-01 DOI: 10.1016/j.ynirp.2025.100301
Anne E.M. Leenders , Bruno M.de Brito Robalo , John H. Maduro , Marta Fiocco , Maarten Lequin , Eelco Hoving , Marita Partanen

Background

Increasing survival rates in pediatric brain tumor patients highlight the importance of understanding treatment-related neurodevelopmental consequences. The posterior fossa is a primary site for many of these tumors, which are treated with surgery, chemotherapy, and/or radiation therapy that could impact brain function and structure. This retrospective longitudinal study examines changes in subcortical brain structures of pediatric posterior fossa tumor patients over five years post-diagnosis and compares patients who were treated for low- and high-grade tumors.

Methods

We analyzed 558 T1-weighted (T1w) brain MR images of 57 pediatric posterior fossa tumor patients (mean age at diagnosis = 9.65 (SD 4.06), 44 % female). There were 39 patients with a low-grade tumor treated with surgery and/or chemotherapy and 18 patients with a high-grade tumor treated with surgery, chemotherapy, and radiation treatment. Volumes of the globus pallidus, caudate, putamen, nucleus accumbens, amygdala, thalamus and hippocampus were calculated using SPM CAT12 (Statistical Parametric Mapping Computational Anatomy Toolbox). Linear mixed effect models were estimated to study the association between volumetric changes and time for these 7 subcortical structures.

Results

Significant interactions between time and group were shown in the hippocampus (β = −0.06, SE = 0.02, p < .001) and globus pallidus (β = 0.01, SE = 0.00, p = .016). Patients treated for low-grade tumors exhibited increasing hippocampal volume over time, while those treated for high-grade tumors experienced a decline. In the globus pallidus, volume decreased over time for the low-grade tumor group but remained stable for the high-grade tumor group. Patients with a history of hydrocephalus had smaller thalamic (β = −0.40, SE = 0.14, p = .004) and hippocampal (β = −0.31, SE = 0.12, p = .012) volumes. Younger age at diagnosis was associated with smaller putamen and thalamus, and male sex was associated with larger volumes of the putamen, nucleus accumbens and amygdala.

Conclusions

These findings suggest that children who received treatment for low- or high-grade tumors had different subcortical volumes over time, which may be related to treatment, complications, or demographic factors such as age and sex. These results suggest that while brain tumor treatment primarily aims to cure patients, it may inevitably affect neural development and may contribute to a range of cognitive, behavioral, and emotional long-term deficits. This emphasizes the need for long-term monitoring and prospective longitudinal studies into structural and functional brain changes after treatment for pediatric brain tumor.
背景:儿童脑肿瘤患者生存率的提高凸显了了解治疗相关神经发育后果的重要性。后窝是许多此类肿瘤的原发部位,这些肿瘤可通过手术、化疗和/或放射治疗来治疗,这可能会影响大脑功能和结构。这项回顾性的纵向研究检查了儿童后窝肿瘤患者在诊断后5年内皮质下脑结构的变化,并比较了接受低级别和高级别肿瘤治疗的患者。方法分析57例小儿后窝肿瘤患者558张t1加权(T1w)脑MR图像(诊断时平均年龄9.65岁(SD 4.06),女性占44%)。39例低级别肿瘤患者接受手术和/或化疗,18例高级别肿瘤患者接受手术、化疗和放疗。使用SPM CAT12(统计参数映射计算解剖工具箱)计算苍白球、尾状核、壳核、伏隔核、杏仁核、丘脑和海马的体积。估计线性混合效应模型来研究这7种皮质下结构的体积变化与时间之间的关系。结果海马(β = - 0.06, SE = 0.02, p < 0.001)和苍白球(β = 0.01, SE = 0.00, p = 0.016)与时间和组间存在显著交互作用。治疗低级别肿瘤的患者海马体积随着时间的推移而增加,而治疗高级别肿瘤的患者海马体积则下降。低度肿瘤组的苍白球体积随时间减少,而高级别肿瘤组的苍白球体积保持稳定。有脑积水病史的患者丘脑(β = - 0.40, SE = 0.14, p = 0.004)和海马(β = - 0.31, SE = 0.12, p = 0.012)体积较小。诊断时年龄越小,壳核和丘脑越小,男性的壳核、伏隔核和杏仁核体积越大。结论:这些发现表明,接受低级别或高级别肿瘤治疗的儿童随着时间的推移具有不同的皮质下体积,这可能与治疗、并发症或年龄和性别等人口统计学因素有关。这些结果表明,虽然脑肿瘤治疗的主要目的是治愈患者,但它可能不可避免地影响神经发育,并可能导致一系列认知、行为和情感的长期缺陷。这强调了对儿童脑肿瘤治疗后大脑结构和功能变化进行长期监测和前瞻性纵向研究的必要性。
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引用次数: 0
Exploring brain activation during a buttoning task in adults: A functional near infrared spectroscopy investigation 在成人扣钮扣任务中探索大脑活动:功能性近红外光谱研究
Q4 Neuroscience Pub Date : 2025-11-20 DOI: 10.1016/j.ynirp.2025.100300
Niloufar Benam , Courtney Pollock , Jill G. Zwicker , Shannon B. Lim , Kaya Yoshida , Julia Schmidt
The ability to complete activities of daily living (ADLs) is an important part of daily life and can promote well-being and independence. There is currently limited knowledge of brain activity during ADLs (e.g. dressing tasks). Previous studies explored brain activity during dressing using functional magnetic resonance imaging (fMRI); however, the supine position during fMRI is not a natural dressing posture and may impact findings. Functional near-infrared spectroscopy (fNIRS) is a promising method of data collection as it can investigate brain activity in a natural state (sitting) during dressing. In this study, to understand brain activity during buttoning in unimpaired adults, twenty participants (25–65 years) completed an upper extremity task of buttoning in three 20 s repetitions with 15 s rest in between each activity block. Brain activation patterns were recorded using fNIRS over the prefrontal, premotor, supplementary motor, sensorimotor, and posterior parietal cortices. Compared to the resting period, significantly higher activation during the activity block was observed in all recorded regions but the posterior parietal cortex. Understanding brain activity in unimpaired adults during the performance of activities of daily living is a critical first-step for investigating brain activation in different clinical populations.
完成日常生活活动(ADLs)的能力是日常生活的重要组成部分,可以促进幸福感和独立性。目前对adl期间大脑活动的了解有限(例如穿衣任务)。先前的研究利用功能性磁共振成像(fMRI)探索了包扎过程中的大脑活动;然而,在功能磁共振成像中,仰卧位不是自然的穿衣姿势,可能会影响结果。功能近红外光谱(fNIRS)是一种很有前途的数据收集方法,因为它可以研究穿衣时自然状态下(坐着)的大脑活动。在这项研究中,为了了解未受损成人扣纽扣时的大脑活动,20名参与者(25-65岁)完成了上肢扣纽扣任务,在每个活动块之间休息15秒,重复3次,每次20秒。使用fNIRS记录前额叶、前运动、辅助运动、感觉运动和后顶叶皮层的大脑激活模式。与静息期相比,在活动阻滞期间,除后顶叶皮质外,所有记录的区域都观察到明显更高的激活。了解正常成年人在日常生活活动中的脑活动是研究不同临床人群脑活动的关键的第一步。
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引用次数: 0
Cortical connectivity is associated with cognition across time in Parkinson's disease 皮层连通性与帕金森病患者的认知能力有关
Q4 Neuroscience Pub Date : 2025-11-12 DOI: 10.1016/j.ynirp.2025.100299
Hunter P. Twedt , Brooke E. Yeager , Jacob E. Simmering , Jordan L. Schultz , Nandakumar S. Narayanan
Cognitive symptoms are common in Parkinson's disease (PD) and have debilitating effects on quality of life and disease trajectory; however, the underlying brain mechanisms remain poorly understood. To address this gap, we investigated the relationship between functional connectivity and cognition at multiple time points using longitudinal functional MRI (fMRI) and cognitive assessments from the Parkinson's Progression Marker Initiative (PPMI). We calculated resting-state functional connectivity across three distinct time points. We analyzed functional connectivity within and between three key cortical brain networks that have been linked with higher-order cognitive function in PD: the frontoparietal network (FPN); the salience network (SAL); and the default mode network (DMN). Global cognitive functioning was assessed with the Montreal Cognitive Assessment (MoCA) at each of the three time points, and this was our primary dependent variable. Linear mixed-effects modeling revealed that decreased FPN-DMN functional connectivity is associated with lower MoCA scores over time. A similar trend was found for SAL-DMN functional connectivity. These relationships were specific to cognition, as there were no significant associations between functional connectivity and motor symptoms, as measured with the Movement Disorders Society-Unified Parkinson's Disease Rating Scale-Part III (MDS-UPDRS-III). These findings suggests that cortical connectivity is associated with and may contribute to the progression of cognitive symptoms in PD. Our findings advance knowledge about cognitive changes in PD and emphasize the importance of functional brain network architecture.
认知症状在帕金森病(PD)中很常见,并对生活质量和疾病轨迹产生衰弱性影响;然而,潜在的大脑机制仍然知之甚少。为了解决这一差距,我们使用纵向功能MRI (fMRI)和帕金森病进展标志物倡议(PPMI)的认知评估,在多个时间点调查了功能连通性和认知之间的关系。我们计算了三个不同时间点的静息状态功能连通性。我们分析了与PD高阶认知功能相关的三个关键大脑皮层网络内部和之间的功能连通性:额顶叶网络(FPN);显著性网络(SAL);和默认模式网络(DMN)。全球认知功能在三个时间点分别用蒙特利尔认知评估(MoCA)进行评估,这是我们的主要因变量。线性混合效应模型显示,随着时间的推移,FPN-DMN功能连通性的降低与MoCA分数的降低有关。SAL-DMN功能连通性也有类似的趋势。根据运动障碍学会统一帕金森病评定量表第三部分(MDS-UPDRS-III)的测量,这些关系是特定于认知的,因为功能连通性和运动症状之间没有显著的关联。这些发现表明,皮层连通性与PD患者认知症状的进展有关,并可能促进其进展。我们的发现促进了对PD认知变化的认识,并强调了功能性脑网络结构的重要性。
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引用次数: 0
Relaxation-compensated chemical exchange saturation transfer MRI in the cervical spinal cord at 3T: An application in multiple sclerosis 3T颈脊髓弛豫补偿化学交换饱和转移MRI:在多发性硬化症中的应用
Q4 Neuroscience Pub Date : 2025-10-25 DOI: 10.1016/j.ynirp.2025.100298
Alicia E. Cronin , Anna Combes , Grace Sweeney , Logan Prock , Delaney Houston , Isabella Stuart , Seth Stubblefield , Colin D. McKnight , Francesca Bagnato , Kristin P. O'Grady , Seth A. Smith
Multiple sclerosis (MS) is an autoimmune disease affecting the central nervous system, characterized by demyelination. Exploring pathological changes in the spinal cord could improve our understanding of the mechanisms that cause neurological dysfunction and clinical symptoms; however, conventional MRI is not sensitive to molecular changes within the tissue. Chemical exchange saturation transfer (CEST) can probe tissue biochemistry with high resolution and sensitivity, without exogenous contrasts. However, CEST measurements in vivo are contaminated by concurrent effects including semi-solid magnetization transfer (MT), direct water saturation, and T1-relaxation, which can be altered in MS and need to be removed to accurately quantify changes. Fifty-three people with relapsing-remitting MS (pwRRMS) and 45 healthy controls (HCs) were imaged at 3 T to quantify amide and nuclear Overhauser enhancement (NOE) CEST effects in the cervical spinal cord. Using Lorentzian fitting, confounding effects were removed, and the apparent exchange-dependent relaxation (AREX) contrast was calculated. Uncorrected and corrected AREX amide and NOE contrasts were compared across groups and tissue types. In pwRRMS, AREX NOE was significantly different in lesions compared to normal-appearing white matter. Greater heterogeneity in both CEST contrasts was observed in pwRRMS compared to the HCs. In a sub-analysis of pwRRMS separated by neurological disability, AREX amide was significantly different between pwRRMS with and without disability. The correction of confounding factors in this study highlights the importance of isolating CEST effects in the cervical spinal cord for more specific characterization and to better understand changes in tissue pathology and relationship to disease severity.
多发性硬化症(MS)是一种影响中枢神经系统的自身免疫性疾病,以脱髓鞘为特征。探索脊髓的病理变化可以提高我们对引起神经功能障碍和临床症状的机制的理解;然而,传统的MRI对组织内的分子变化并不敏感。化学交换饱和转移(CEST)可以在不需要外源对比的情况下,以高分辨率和高灵敏度探测组织生化。然而,体内CEST测量受到半固体磁化转移(MT)、直接水饱和度和t1弛豫等并发效应的污染,这些效应在质谱中可以改变,需要去除以准确量化变化。53例复发缓解型多发性硬化症患者(pwRRMS)和45例健康对照(hc)在3t下进行成像,以量化颈脊髓的酰胺和核Overhauser增强(NOE) CEST效应。利用洛伦兹拟合去除混杂效应,计算表观交换相关松弛(AREX)对比。不同组和不同组织类型比较未校正和校正的AREX酰胺和NOE的对比。在pwRRMS中,AREX NOE在病变中与正常白质相比有显著差异。与hc相比,pwRRMS在两种CEST对比中观察到更大的异质性。在以神经功能障碍分开的pwRRMS的亚分析中,AREX酰胺在有和没有残疾的pwRRMS之间有显著差异。本研究中对混杂因素的纠正强调了分离CEST在颈脊髓中的作用的重要性,以获得更具体的表征,并更好地了解组织病理学的变化及其与疾病严重程度的关系。
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引用次数: 0
Mapping of neuronal redox conditions in a mouse model of Rett syndrome Rett综合征小鼠模型中神经元氧化还原条件的映射
Q4 Neuroscience Pub Date : 2025-10-24 DOI: 10.1016/j.ynirp.2025.100297
Hendrik Woeste , Laura van Agen , Michael Müller
Rett syndrome (RTT) is associated with a systemic redox imbalance, potentially provoking cellular dysfunction and contributing to some of the disease symptoms. While previous studies have reported these redox alterations also in brain, the exact cerebral redox pattern remains unclear. We therefore generated MeCP2-deficient mice expressing the cytosolic redox sensor roGFPc in excitatory projection neurons. Taking advantage of the earlier developed excitation ratiometric 2-photon imaging, we mapped the redox conditions of individual hippocampal and cortical neurons in acute brain tissue slices of female mice. These quantitative redox analyses revealed clear brain-regional differences in the degree of roGFPc oxidation, with dentate gyrus and CA3 being most oxidized, CA1 being least oxidized and cortical areas presenting intermediate oxidation levels. On postnatal day p50, hardly any RTT-related differences were evident. With maturation (>p100), redox conditions became more reducing in WT females. This was, however, not the case in MeCP2-deficient females, whose hippocampal and especially cortical neurons now appeared clearly more oxidized. By correlative redox microscopy, we succeeded to relate cellular redox-conditions to cellular MeCP2 expression. Validation in CA1 and somatosensory cortex revealed that, based on improved discrimination sensitivity, a more oxidized redox balance became detectable in MeCP2-deficient cortical neurons already on p50. Expression of a mitochondrial catalase efficiently abolished the more oxidizing redox milieu in MeCP2-deficient cortical neurons. This confirms a widespread oxidative burden in forebrain neurons, which manifests already in pre-symptomatic MeCP2-deficient female mice and intensifies with disease progression. Stabilizing mitochondrial function by targeted catalase expression proved potentially protective.
Rett综合征(RTT)与系统性氧化还原失衡有关,可能引发细胞功能障碍并导致某些疾病症状。虽然先前的研究也报道了这些氧化还原改变在大脑中,但确切的大脑氧化还原模式尚不清楚。因此,我们产生了在兴奋性投射神经元中表达胞质氧化还原传感器roGFPc的mecp2缺陷小鼠。利用较早开发的激发比率双光子成像技术,我们绘制了雌性小鼠急性脑组织切片中单个海马和皮质神经元的氧化还原情况。这些定量氧化还原分析揭示了roGFPc氧化程度的明显脑区域差异,齿状回和CA3被氧化最多,CA1被氧化最少,皮质区呈现中等氧化水平。在出生后50天,几乎没有明显的rtt相关差异。随着成熟(>p100), WT雌性的氧化还原条件变得更加减少。然而,在mecp2缺陷的女性中,情况并非如此,她们的海马,尤其是皮质神经元现在明显被氧化得更严重。通过相关氧化还原显微镜,我们成功地将细胞氧化还原条件与细胞MeCP2表达联系起来。在CA1和体感觉皮层的验证表明,基于改进的识别敏感性,在p50上已经存在mecp2缺陷的皮质神经元中可以检测到更多的氧化还原平衡。线粒体过氧化氢酶的表达有效地消除了mecp2缺陷皮质神经元中更具氧化性的氧化还原环境。这证实了前脑神经元中广泛存在氧化负担,这种负担在症状前mecp2缺陷雌性小鼠中已经表现出来,并随着疾病进展而加剧。通过靶向过氧化氢酶表达来稳定线粒体功能被证明具有潜在的保护作用。
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引用次数: 0
Test-retest reliability of edge-level resting-state functional connectivity in people with aphasia 失语症患者静息状态功能连通性的重测信度
Q4 Neuroscience Pub Date : 2025-10-22 DOI: 10.1016/j.ynirp.2025.100296
Jeffrey P. Johnson , Michael Walsh Dickey , Jason W. Bohland , William D. Hula
There is a growing interest in using resting-state functional connectivity (RSFC) to investigate language processing and recovery in post-stroke aphasia due to its limited dependence on an individual's ability to follow directions and perform tasks, or the severity of their aphasia. However, the test-retest reliability of RSFC in people with aphasia has not been established, raising questions about the strength and validity of inferences based on this technique. In this study, we examined the reliability of RSFC at the level of individual edges (i.e., connections) in 14 adults with chronic aphasia due to left-hemisphere stroke. Intraclass correlations (ICCs) between two resting-state scans obtained over a few days were computed for every edge in a whole-brain network and several cognitive and language subnetworks. Based on median ICCs, reliability was fair at longer scan durations (10–12 min) and better in most subnetworks than the whole brain. Reliability was also positively associated with connectivity strength and had a weak negative relationship with inter-node distance (i.e., the distance between the regions that form an edge). Edges in the right hemisphere were more reliable than those in the left hemisphere and between hemispheres, though all three sets of edges were fairly reliable. The results indicate that edge-level RSFC is acceptably reliable for continued use in aphasia research but highlight the need for strategies to ensure that inferences are based on valid results, such as using sufficiently long scans and focusing analyses on established subnetworks, especially in longitudinal contexts.
静息状态功能连接(RSFC)用于研究脑卒中后失语症的语言处理和恢复,这是由于其对个体遵循指示和执行任务的能力的有限依赖,或者失语症的严重程度。然而,失语症患者RSFC的重测信度尚未建立,这对基于该技术的推断的强度和有效性提出了质疑。在这项研究中,我们在个体边缘(即连接)水平上检测了14例左半球中风导致的慢性失语症患者的RSFC的可靠性。在几天内获得的两次静息状态扫描之间的类内相关性(ICCs)被计算为全脑网络和几个认知和语言子网络的每个边缘。基于中位ICCs,可靠性在较长的扫描持续时间(10-12分钟)是公平的,并且在大多数子网络中比在整个大脑中更好。可靠性还与连通性强度呈正相关,与节点间距离(即形成边缘的区域之间的距离)呈弱负相关。右半球的边缘比左半球和两个半球之间的边缘更可靠,尽管这三组边缘都相当可靠。结果表明,边缘水平RSFC在失语症研究中继续使用是可接受的可靠的,但强调需要策略来确保推论是基于有效的结果,例如使用足够长的扫描和集中分析已建立的子网,特别是在纵向背景下。
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引用次数: 0
Glymphatic system dysfunction associated with player position in collegiate American football players: A DTI-ALPS study 美国大学橄榄球运动员体位与淋巴系统功能障碍相关:一项DTI-ALPS研究
Q4 Neuroscience Pub Date : 2025-10-16 DOI: 10.1016/j.ynirp.2025.100295
Michael Gay , Xiaoxiao Bai , Owen Griffith , Linda Papa , Wayne Sebastianelli , Kevin Cockroft , Krishnamoorthy Thamburaj , Semyon Slobounov

Purpose

The glymphatic system plays a crucial role in both short-term and long-term brain health through the clearance of neural waste and is vulnerable to disruption following head trauma. This study aimed to determine whether exposure to a season of sub-clinical head acceleration events (HAEs) in collegiate American football affects glymphatic function, and whether this effect varies by player position or concussion history.

Methods

Sixty-six male NCAA Division I football athletes underwent diffusion tensor imaging (DTI) before and after a competitive football season. Glymphatic function was quantified using the Diffusion Tensor Imaging Along the Perivascular Space (DTI-ALPS) index. Participants were categorized by player position (Speed vs. Non-Speed) and concussion history (Yes vs. No). Linear mixed-effects models were used to evaluate changes in DTI-ALPS index by time point, hemisphere, position, and concussion history.

Results

There were no significant changes in DTI-ALPS values from pre-to post-season in either hemisphere across the full cohort. However, a significant main effect of player position was observed in the right hemisphere (p = 0.025), with Speed position players demonstrating lower DTI-ALPS indices compared to Non-Speed players, suggesting reduced glymphatic function. No significant effects of concussion history or interaction terms were found.

Conclusions

These findings indicate that positional differences in HAEs experienced by Speed players, even absent clinical concussion, may contribute to impaired glymphatic function. Speed position players may be at increased risk due to the nature and magnitude of head impacts. The DTI-ALPS index may serve as a sensitive biomarker for early, sub-clinical brain dysfunction in athletes participating in contact sports.
目的淋巴系统通过清除神经废物在短期和长期脑健康中起着至关重要的作用,并且在头部创伤后容易受到破坏。本研究旨在确定一个赛季的美国大学橄榄球亚临床头部加速事件(HAEs)是否会影响淋巴功能,以及这种影响是否因球员位置或脑震荡病史而异。方法采用弥散张量成像(diffusion tensor imaging, DTI)技术对66名男子NCAA一级联赛足球运动员在比赛前后进行影像学检查。采用沿血管周围间隙弥散张量成像(DTI-ALPS)指数量化淋巴功能。参与者按球员位置(速度vs.非速度)和脑震荡历史(是vs.否)进行分类。采用线性混合效应模型评价DTI-ALPS指数在时间点、半球、体位和脑震荡病史方面的变化。结果在整个队列中,两个半球的DTI-ALPS值从赛季前到赛季后都没有显著变化。然而,在右半球观察到球员位置的显著主要影响(p = 0.025),与非速度球员相比,速度球员表现出较低的DTI-ALPS指数,表明淋巴功能降低。没有发现脑震荡病史或相互作用条件的显著影响。结论:即使没有临床脑震荡,Speed球员的HAEs位置差异也可能导致淋巴功能受损。由于头部撞击的性质和程度,速度位置球员可能会面临更高的风险。DTI-ALPS指数可作为接触性运动运动员早期亚临床脑功能障碍的敏感生物标志物。
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引用次数: 0
Olfactory bulb volume and asymmetry as predictors of executive dysfunction in adolescents with congenital heart disease 嗅球体积和不对称性作为先天性心脏病青少年执行功能障碍的预测因子
Q4 Neuroscience Pub Date : 2025-10-06 DOI: 10.1016/j.ynirp.2025.100293
Adriana Racki , Anushka Shah , Ruby Slabicki , Julia Wallace , Vince K. Lee , Rafael Ceschin
Neurodevelopmental disabilities are common sequelae in patients with congenital heart disease (CHD), although limited research has investigated the mechanistic underpinnings of these findings. Our study investigates whether olfactory bulb (OB) anomalies predict neurodevelopmental outcomes in adolescents with CHD.
A prospective, observational study of 54 CHD and 75 healthy subjects, ages 6–25 years old, was completed under the supervision of a senior pediatric neuroradiologist. T2 3D Space and T2 Blade 2 MM MRI images were manually segmented to extract volumetric bilateral regions of the OB and cerebrospinal fluid (CSF) using ITK-SNAP. Imaging metrics were correlated to OB asymmetry, CSF to OB ratio, total CSF volume, total OB volume, and independent left and right CSF and OB volumes. Executive function was determined by the NIH Toolbox Cognitive Battery, Behavioral Rating Inventory of Executive Function (BRIEF) and Delis-Kaplan Executive Function System (D-KEFS).
No statistically significant results were reported between cohorts for asymmetry of OB, CSF to OB ratio, total CSF volume, total OB volume, nor between independent left and right CSF and OB volumes. Increased OB volume and asymmetry of the OB were associated with worse outcomes on the BRIEF Parent Report.
Our findings identify adolescents who are at risk for executive dysfunction, particularly those showing increased OB volume and/or asymmetry of the OB. This is especially concerning for the CHD population with atypical OB morphology, as they show significantly poorer outcomes on the BRIEF Parent Report and face a higher overall risk.
神经发育障碍是先天性心脏病(CHD)患者常见的后遗症,尽管有限的研究调查了这些发现的机制基础。我们的研究探讨嗅球(OB)异常是否能预测青少年冠心病患者的神经发育结局。在一名资深儿科神经放射学家的指导下,对54名冠心病患者和75名年龄在6-25岁的健康受试者进行了前瞻性观察研究。使用ITK-SNAP对T2 3D Space和T2 Blade 2 MM MRI图像进行手动分割,提取OB和脑脊液(CSF)的双侧体积区域。影像学指标与OB不对称、CSF与OB比值、CSF总容积、OB总容积以及独立的左、右CSF和OB容积相关。执行功能采用NIH工具箱认知电池、执行功能行为评定量表(BRIEF)和Delis-Kaplan执行功能系统(D-KEFS)测定。脑脊液、脑脊液与脑脊液比值、脑脊液总容积、脑脊液总容积的不对称性在队列间无统计学意义,独立的左右脑脊液和脑脊液容积之间无统计学意义。在BRIEF家长报告中,OB体积增加和OB不对称与较差的结果相关。我们的研究结果确定了有执行功能障碍风险的青少年,特别是那些OB体积增加和/或OB不对称的青少年。这对于OB形态不典型的冠心病人群尤其值得关注,因为他们在BRIEF家长报告中显示出明显较差的结果,面临更高的总体风险。
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引用次数: 0
Cerebral plasticity after hypoglosso-facial anastomosis in facial palsy: a magnetoencephalography study 面瘫患者舌下-面部吻合术后大脑可塑性的脑磁图研究
Q4 Neuroscience Pub Date : 2025-09-30 DOI: 10.1016/j.ynirp.2025.100294
Rémi Hervochon , Deborah Ziri , Guillaume Dupuch , Maximilien Chaumon , Claire Foirest , Denis Schwartz , Christophe Gitton , Nathalie George , Frédéric Tankere

Background

Hypoglosso-facial anastomosis (HFA) consists in suturing the proximal part of the hypoglossal nerve with the distal part of the facial nerve in patients with facial palsy. Axonal regrowth through the anastomosis makes it possible to restore facial motor skills, which become spontaneous after physiotherapy. This suggests cerebral plasticity.

Objective

We used magnetoencephalography (MEG) in a pilot study to test this hypothesis.

Methods

Twenty-one healthy volunteers (CTRL) and 12 patients after HFA performed 5 motor tasks with MEG and electromyographic recordings: eyelid closure, smile, tongue protraction, mastication and thumb flexion. For each task, we picked the location of the maximum source activity within the precentral gyrus. We calculated the distances between this location and the vertex for each task and a somatotopy index.

Results

There was an interaction between the participant’s group and the task (F(4,124) = 4.07, p = 0.0039). In CTRL, the maximum source location was statistically different between smile and tongue tasks and between eyelid and tongue tasks (p < 0.001). No such difference was observed in HFA (p = 1.000). 90.5 % of CTRL and 41.7 % of HFA showed a normal somatotopy (p = 0.0046).

Conclusions

In CTRL, the organization of the cortical motor areas was similar to that of Penfield’s motor Homunculus. In contrast, in HFA, eyelid closure, tongue protraction and smile areas were not significantly distinct. This supports the hypothesis of cerebral plasticity after HFA.
The Ethical Committee of Paris Idf VI approved the study (CPP Ouest 6-CPP975-HPS2).
背景:面瘫患者舌下神经近端与面神经远端吻合是舌下神经吻合术。通过吻合的轴突再生使恢复面部运动技能成为可能,这些技能在物理治疗后变得自发。这表明大脑具有可塑性。目的在一项初步研究中,我们使用脑磁图(MEG)来验证这一假设。方法21例健康志愿者(对照组)和12例HFA术后患者分别进行闭眼、微笑、伸舌、咀嚼和拇指屈曲5项运动任务的MEG和肌电记录。对于每一项任务,我们在中央前回内选择了最大活动源的位置。我们计算了每个任务的这个位置和顶点之间的距离以及一个躯体解剖指数。结果被试组与任务之间存在交互作用(F(4124) = 4.07, p = 0.0039)。在CTRL中,微笑任务和舌头任务之间以及眼睑任务和舌头任务之间的最大源位置有统计学差异(p < 0.001)。HFA无明显差异(p = 1.000)。90.5%的CTRL和41.7%的HFA显示正常(p = 0.0046)。结论大鼠皮层运动区组织与潘菲尔德运动小丘相似。相比之下,HFA组的闭眼睑、伸舌和微笑区差异不显著。这支持了HFA后大脑可塑性假说。巴黎第六届国际医学论坛伦理委员会批准了该研究(CPP Ouest 6-CPP975-HPS2)。
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引用次数: 0
Subcortical resting state functional connectivity as a neural marker of first onset internalizing disorder in high-risk youth 皮层下静息状态功能连通性作为高危青少年首次发病内化障碍的神经标志物
Q4 Neuroscience Pub Date : 2025-09-26 DOI: 10.1016/j.ynirp.2025.100291
McKinley Pawlak , Signe Bray , Ford Burles , Daniel C. Kopala-Sibley

Background

Research has linked individual differences in resting state functional connectivity (RSFC) of subcortical brain regions to internalizing disorders, but little research has examined if these changes are pre-morbid risk factors. This study examined individual differences in subcortical RSFC as risk factors for the first lifetime onset of an internalizing disorder in youth at familial risk.

Methods

Participants (n = 93) were adolescents with a parental history of internalizing disorders, but with no such history themselves. Youth completed resting state fMRI scans, as well as the MINI-Kid and the Youth Self Report internalizing symptoms scale at baseline. The MINI-Kid was completed again at 9 or 18-month follow-up to assess onset of internalizing disorders. Seed-to-whole brain analyses consisted of a multiple regression models controlling for sex, age, in scanner motion, and baseline symptoms.

Results

First onsets at follow-up were associated with increased baseline RSFC between the left caudate and the bilateral SMA (pFDR = .002), and between the right nucleus accumbens and the right superior parietal lobule (pFDR = .0003).

Conclusion

Altered RSFC of subcortical regions may represent a pre-morbid risk factor for developing a first onset of an internalizing disorder. Results may have implications for understanding the neural bases of internalizing disorders and for early identification and prevention efforts.
研究已经将皮质下脑区域静息状态功能连接(RSFC)的个体差异与内化障碍联系起来,但很少有研究检查这些变化是否为发病前的危险因素。本研究考察了皮质下RSFC的个体差异作为具有家族风险的青少年首次终身发病的内化障碍的危险因素。方法研究对象(n = 93)为父母有内化障碍史,但自身无内化障碍史的青少年。青少年完成静息状态fMRI扫描,以及MINI-Kid和青少年自我报告内化症状量表。MINI-Kid在9或18个月的随访中再次完成,以评估内化障碍的发生。从种子到全脑的分析包括控制性别、年龄、扫描运动和基线症状的多重回归模型。结果随访时首次发病与左尾状核和双侧SMA之间(pFDR = 0.002)以及右侧伏隔核和右侧顶叶上小叶之间(pFDR = 0.0003)的基线RSFC增加有关。结论皮质下区域RSFC的改变可能是发病前发生内化障碍的危险因素。结果可能对了解内化障碍的神经基础以及早期识别和预防工作具有启示意义。
{"title":"Subcortical resting state functional connectivity as a neural marker of first onset internalizing disorder in high-risk youth","authors":"McKinley Pawlak ,&nbsp;Signe Bray ,&nbsp;Ford Burles ,&nbsp;Daniel C. Kopala-Sibley","doi":"10.1016/j.ynirp.2025.100291","DOIUrl":"10.1016/j.ynirp.2025.100291","url":null,"abstract":"<div><h3>Background</h3><div>Research has linked individual differences in resting state functional connectivity (RSFC) of subcortical brain regions to internalizing disorders, but little research has examined if these changes are pre-morbid risk factors. This study examined individual differences in subcortical RSFC as risk factors for the first lifetime onset of an internalizing disorder in youth at familial risk.</div></div><div><h3>Methods</h3><div>Participants (n = 93) were adolescents with a parental history of internalizing disorders, but with no such history themselves. Youth completed resting state fMRI scans, as well as the MINI-Kid and the Youth Self Report internalizing symptoms scale at baseline. The MINI-Kid was completed again at 9 or 18-month follow-up to assess onset of internalizing disorders. Seed-to-whole brain analyses consisted of a multiple regression models controlling for sex, age, in scanner motion, and baseline symptoms.</div></div><div><h3>Results</h3><div>First onsets at follow-up were associated with increased baseline RSFC between the left caudate and the bilateral SMA (pFDR = .002), and between the right nucleus accumbens and the right superior parietal lobule (pFDR = .0003).</div></div><div><h3>Conclusion</h3><div>Altered RSFC of subcortical regions may represent a pre-morbid risk factor for developing a first onset of an internalizing disorder. Results may have implications for understanding the neural bases of internalizing disorders and for early identification and prevention efforts.</div></div>","PeriodicalId":74277,"journal":{"name":"Neuroimage. Reports","volume":"5 4","pages":"Article 100291"},"PeriodicalIF":0.0,"publicationDate":"2025-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145159161","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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Neuroimage. Reports
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