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21.
《Clinical neurophysiology》2019,130(8):1280-1288
ObjectiveMotor Unit Number Estimation (MUNE) methods, such as the recently developed MScanFit MUNE (MScan), may be valuable in tracking motor unit loss in ALS. Muscle Velocity Recovery Cycles (MVRCs) provide information about muscle membrane properties and can reveal disease-related changes.This study was undertaken to test the applicability of MScan to the anterior tibial muscle (TA) and to test whether the MVRCs could improve understanding of ALS pathophysiology.MethodsTwenty-six ALS patients and 25 healthy controls were evaluated by quantitative electromyography, nerve conduction study and the two novel methods: MScan and MVRC; all in the TA and peroneal nerve.ResultsThe estimated number of motor units for ALS patients (Median: 45, interquartile range: 28.5–76.5) was significantly lower than for the controls (117, 96.0–121.0) (P = 2.19 × 10−7). Unit size was increased only when amplitudes were expressed as percentage of CMAP. Of MVRC measurements, only relative refractory period was significantly abnormal in patients.ConclusionMScanFit MUNE gives a sensitive and quantitative measure of loss of TA motor units in ALS. Muscle fiber membrane properties are mostly unaffected, despite substantial denervation, presumably due to collateral reinnervation.SignificanceMScan is suitable for detecting motor unit loss in TA. MVRCs do not provide new insights in ALS. 相似文献
22.
Evangelia Liouta Vasileios K Katsaros George Stranjalis Edyta Leks Uwe Klose Sotirios Bisdas 《Journal of neuroradiology. Journal de neuroradiologie》2019,46(3):199-206
Background and purpose
Evidence of pre-operative resting state functional magnetic resonance (RS-fMRI) validation by correlating it with clinical pre-operative status in brain tumor patients is scarce. Our aim was to validate the functional relevance of RS-fMRI by investigating the association between RS-fMRI and pre-operative motor and language function performance in patients with brain tumor.Materials and methods
Sixty-nine patients with brain tumors were prospectively recruited. Patients with tumors near precentral gyrus (n?=?49) underwent assessment for apparent (paresis) and subtle (finger tapping) deficits. Patients with left frontal tumors in the vicinity of the inferior frontal gyrus (n?=?29) underwent assessment for gross (aphasia) and mild language (phonological verbal fluency) deficits. RS-fMRI results were extracted by spatial independent component analysis (ICA).Results
Motor group: paretic patients showed significantly (P?=?0.01) decreased BOLD signal in ipsilesional precentral gyrus when compared to contralesional one. Significantly (P?<?0.01) lower BOLD signal was also observed in ipsilesional precentral gyrus of paretics when compared with the non-paretics. In asymptomatic patients, a strong positive correlation (r?=?0.68, P?<?0.01) between ipsilesional motor cortex BOLD signal and contralesional finger tapping performance was observed. Language group: patients with aphasia showed significantly (P?=?0.01) decreased RS-fMRI BOLD signal in left BA 44 when compared with non- aphasics. In asymptomatic patients, a strong positive correlation (r?=?0.72, P?<?0.01) between BA 44 BOLD signal and phonological fluency performance was observed.Conclusions
Our results showed that RS-fMRI BOLD signal of motor and language networks were significantly affected by the tumors implying the usefulness of the method for assessment of the underlying functions in brain tumors patients. 相似文献23.
Minimal hepatic encephalopathy (MHE) is characterized as cognitive deficits including memory and learning dysfunctions after liver injuries or hepatic diseases. Our understandings of neurological mechanisms of MHE-associated cognitive syndromes, however, are far from complete. In the current study we generated a mouse MHE model by repetitive administrations of thioacetamide (TAA), which induced hyperammonemia plus elevated proinflammatory cytokines in both the general circulation and motor cortex. MHE mice presented prominent motor learning deficits, which were associated with excess dendritic spine pruning in the motor cortex under 2-photon in vivo microscopy. The pharmaceutical blockade of glucocorticoid receptor or suppression of its biosynthesis further rescued motor learning deficits and synaptic protein loss. Moreover, MHE mice presented microglial activation, which can be alleviated after glucocorticoid pathway inhibition. In sum, our data demonstrates corticosterone-induced microglial activation, synaptic over-pruning and motor learning impairments in MHE, providing new insights for MHE pathogenesis and potential targets of clinical interventions. 相似文献
24.
Vision and motor skills are intimately linked, both in their own development and functionally. The solicitation of one can therefore promote the development of the other. The various professionals of motor skills (physiotherapist, psychomotor therapists, occupational therapists) and the orthoptists are called upon to integrate these aspects in the follow-up of the patients, as well in the guides as in the installations. 相似文献
25.
Pontus Henriksson Marja H. Leppänen Hanna Henriksson Christine Delisle Nyström Cristina Cadenas-Sanchez Anna Ek Jonatan R. Ruiz Francisco B. Ortega Marie Löf 《Journal of Science and Medicine in Sport》2019,22(5):574-579
Objectives
Although physical fitness is considered a marker of health in youth, little is known whether physical fitness in pre-school age is related to later body composition. Thus, this study investigated (i) associations of physical fitness at 4.5 years of age with body composition 12 months later and (ii) whether improvements in physical fitness during the 12-month follow-up were associated with changes in body composition.Design
This study included 142 children, measured at 4.5 and 5.5 years, from the control group of the MINISTOP trial.Methods
Physical fitness (cardiorespiratory fitness, lower- and upper-body muscular strength and motor fitness) was measured using the PREFIT test battery. Body composition was assessed using air-displacement plethysmography.Results
In adjusted regression analyses, greater cardiorespiratory fitness, lower-body muscular strength and motor fitness at 4.5 years were associated with a lower fat mass index at 5.5 years (standardized β= ?0.182 to ?0.229, p ≤ 0.028). Conversely, greater cardiorespiratory fitness, lower- and upper-body muscular strength as well as motor fitness at 4.5 years of age were associated with a higher fat-free mass index (standardized β = 0.255–0.447, p ≤ 0.001). Furthermore, improvements in cardiorespiratory fitness, lower-body muscular strength and motor fitness during the 12-month follow-up period were associated with decreases in fat mass index and/or % fat mass.Conclusions
In conclusion, the results of this study provide evidence of the importance of physical fitness early in life. Nevertheless, further studies are needed in order to clarify the influence of physical fitness in the pre-school age with later health outcomes. 相似文献26.
《Journal of Science and Medicine in Sport》2019,22(9):1038-1043
ObjectivesGrowing evidence of the importance of motor competence for developing a healthy lifestyle has been established in the last decade. Nonetheless, no single instrument or observation tool have been able to fully measure this construct, particularly because most were built for the diagnosis of children in risk for motor impairment; are limited to a few years of the developmental span; lack objectivity in the assessment protocols; or do not include the locomotor, stability, and manipulative components. This led to the difficulty of comparing researches, and longitudinally follow children into adulthood. Recently, a novel proposal to assess motor competence was presented - the Motor Competence Assessment (MCA) - and this study aims to present the MCA normative data from 3-to-23 years.Design and methodsTwo thousand and eighty-seven participants (1102 boys) between 3 and 23 years of age were evaluated in the MCA (standing long jump, 10 m shuttle run, throwing velocity, kicking velocity, lateral jumps, shifting platforms). Results for each test were introduced in the LMS Chartmaker 2.3. The best model for test and sex was used, resulting in normative curves and percentile values.ResultsFinal norms showed a good fit to the instrument developmental expectations, allowing to differentiate and classify performances along the age interval.ConclusionsThe MCA age- and sex- normative values allow to assess motor competence from childhood to early adulthood. Future directions will include obtaining a total MCA score and the normative scores for the MCA components (stability, locomotion, object control), and to expand the norms to adulthood and old age. 相似文献
27.
目的:探析脑梗死恢复期患者采取丹红注射液联合氢氯吡格雷口服进行治疗对改善神经功能的效果。方法:选取2017年5月至2019年11月马鞍山十七冶医院收治的脑梗死恢复期患者66例作为研究对象,按照随机数字表法随机分为对照组与观察组,每组33例。对照组采取氢氯吡格雷口服治疗,观察组采取丹红注射液联合氢氯吡格雷口服治疗,比较2组患者治疗有效率、神经功能缺损评分(NIHSS)、日常生活能力评分(ADL)、运动功能、不良反应发生率、洼田饮水试验等指标。结果:与对照组比较,观察组治疗有效率明显较高,差异有统计学意义(P<0.05);与对照组比较,观察组的NIHSS评分较低,ADL评分较高,差异有统计学意义(P<0.05);观察组的不良反应发生率明显低于对照组,差异有统计学意义(P<0.05);2组Ⅱ级、Ⅲ级比较,差异有统计学意义(P<0.05);2组用药后洼田饮水试验分级比较,差异有统计学意义(P<0.05)。结论:脑梗死恢复期患者采取丹红注射液联合氢氯吡格雷口服进行治疗能够提升治疗效果、改善神经功能,安全性高,可加快患者康复速度。 相似文献
28.
《Annals of physical and rehabilitation medicine》2019,62(6):431-434
ObjectiveTo describe spasticity from the onset of acquired brain injury, time course over the first year and factors associated with prediction of the development of spasticity.MethodsRecent relevant literature known to the authors, along with a complementary search yielding a total of 9 articles, represented the base for this scoping review.ResultsSpasticity can be seen in the first week after brain injury and is more common in the upper than lower extremity. The severity of upper-limb impairment is a major factor in the development of spasticity during the first year after stroke. The prevalence of severe spasticity seems to increase during the first year. The combination of reduced arm motor function and spasticity in an early phase (4 weeks post-stroke) is an important predictor of the development of severe spasticity after 12 months. Spontaneous reduction in spasticity was seldom reported but may occur, especially in mild forms of spasticity.ConclusionSigns of spasticity can often be noted within the first 4 weeks after brain injury and is more common in the upper than lower extremity. Impaired sensorimotor function is a predictor. These findings highlight the importance to follow up patients with increased risk of developing severe spasticity to be able to start adequate spasticity treatment and prevent the negative consequences of spasticity. Understanding spasticity onset and progression also provides a basis for the development of effective therapies. 相似文献
29.
《中国现代医生》2020,58(8):31-33+封三
目的 对比分析25%甲酸、25%乙酸和4%甲醛3种固定剂对氯化金染色运动终板的效果。方法 选用30只SD大鼠,体重180~220 g,雌雄不拘。进行10次实验,每次实验随机选取3只,取右侧肱二头肌,分别置于25%甲酸、25%乙酸和4%甲醛溶液中固定后,行氯化金镀金法,光学显微镜下观察运动终板的形态结构和背景颜色。结果 3种固定剂固定的运动终板边缘整齐,中央颜色浅于周围,部分运动终板中央呈空泡状。甲酸固定的肌纤维排列有序,横纹清晰,呈紫红色;乙酸固定的肌纤维排列有序,无清晰的横纹,呈紫蓝色,但染色较浅,与运动终板形成的反差较小;甲醛固定的肌纤维排列杂乱,无横纹,呈紫红色、粉红色、紫黑色和蓝色等多种颜色。结论 甲酸固定的运动终板氯化金染色效果优于乙酸和甲醛,甲酸固定的肌组织需要的还原时间少于乙酸和甲醛。因此,进行运动终板染色选择固定剂时,25%甲酸在3种固定试剂中可作为最佳选择。 相似文献
30.