• Title/Summary/Keyword: cognitive dysfunction

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Development of Paradigm for Measuring Prospective Memory Function (미래기억 기능을 측정하기 위한 패러다임의 고안)

  • Park, Ji-Won;Kwon, Yong-Hyun;Kim, Hyun-Jung
    • Physical Therapy Korea
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    • v.12 no.3
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    • pp.67-73
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    • 2005
  • Prospective memory (PM) is related to remember to carry out a previously intented behaviour. The purpose of this study was to develop a paradigm for measuring PM function to diagnosis in mild cognitive impairment 1 or brain injury in patients 2. among brain injured patients Thirty-eight normal healthy subjects participated in current study. The paradigm was composed of four conditions: a baseline and three intention conditions (expectation, execution 1 and 2). In the expectation condition, subjects were asked to make a new response to intented stimuli during ongoing task, but the intented stimuli never occurred. In the execution 1 (one type of expected stimulus) and 2 (two types of expected stimuli), the intended stimuli did occur in 20% of trials. The reaction time and error rate were calculated in each condition. Repeated measures using ANOVA of subject's mean reaction times (RTs) and mean error rates (ERs) showed main effects of conditions during ongoing task. The comparison of PM tasks in executive condition 1 and 2 also showed significance in RTs and ERs. This paradigm reflects sufficiently the performance of prospective memory function during ongoing task in normal individuals. Thus, we suggest that the paradigm will be helpful to study neural network of PM function using brain imaging techniques and diagnosis of PM dysfunction.

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Brain meningioma in a patient with systemic lupus erythematosus

  • Yoo, Byung-Woo;Ahn, Sung-Soo;Pyo, Jung Yoon;Byun, Se-Jin;Song, Jason Jungsik;Park, Yong-Beom;Lee, Soo-Kon;Song, Jung-Soo;Lee, Sang-Won
    • Journal of Yeungnam Medical Science
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    • v.33 no.2
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    • pp.159-161
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    • 2016
  • Brain meningioma, the most common benign brain tumor, has been reported to account for 13-26% of all intracranial tumors, with a crude incidence rate of 2.3 per 100,000 persons for all types of meningiomas. The prevalence of neuropsychiatric lupus erythematosus is 15-91% and its clinical manifestations are diverse: from mild cognitive dysfunction to serious neurological or psychiatric symptoms. Here, we report the first Korean patient with brain meningioma and systemic lupus erythematosus who had undergone surgical tumor resection.

A Study of Burden in Mothers of children With Congenital Metabolic Disorders (선천성 대사장애아 어머니의 부담감에 대한 연구)

  • Lee Myung Sook
    • Child Health Nursing Research
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    • v.1 no.1
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    • pp.26-36
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    • 1995
  • Children with metabolic disorders suffer from retardation and cognitive dysfunction. The task of caring for a mother may mean that she has less time and mony and more workload which may result in increased fatigue and depression and low well-being. The burden carried by mother due to the responsiblity take care of child. The descriptive study was done identify the burden in mother of children with metabolic disorders. The data was collected from November 1 to November 16, 1993. nineteen mothers were interviewed with metabolic disorders with questionnaire by mail. Burden was measured using existing tools by Zarit (1980), Montgomery(1985) . et al. Burden data was analyzed by the SPSS /pc+ program were tested using means, frequencies, Mann-Whitney, U-Wilcoxon Rank Sum Test and Kruskal-Wallis one way ANOVA The result of this study as follows : The meas score for burden was 2.8. (range from 34 to 4.95) The result of reiationship of demographic character and burden was no significant. In conclusion it was found that burden is correlated negatively to quality of life. In this study, burden was scored relatively low. Further qualitative research is needed to validats the nature of burden.

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Challenges in neuro-machine interaction based active robotic rehabilitation of stroke patients

  • Song, Aiguo;Yang, Renhuan;Xu, Baoguo;Pan, Lizheng;Li, Huijun
    • Advances in robotics research
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    • v.1 no.2
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    • pp.155-169
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    • 2014
  • Study results in the last decades show that amount and quality of physical exercises, then the active participation, and now the cognitive involvement of patient in rehabilitation training are known of crux to enhance recovery outcome of motor dysfunction patients after stroke. Rehabilitation robots mainly have been developing along this direction to satisfy requirements of recovery therapy, or focusing on one or more of the above three points. Therefore, neuro-machine interaction based active rehabilitation robot has been proposed for assisting paralyzed limb performing designed tasks, which utilizes motor related EEG, UCSDI (Ultrasound Current Source Density Imaging), EMG for rehabilitation robot control and feeds back the multi-sensory interaction information such as visual, auditory, force, haptic sensation to the patient simultaneously. This neuro-controlled and perceptual rehabilitation robot will bring great benefits to post-stroke patients. In order to develop such kind of robot, some key technologies such as noninvasive precise detection of neural signal and realistic sensation feedback need to be solved. There are still some grand challenges in solving the fundamental questions to develop and optimize such kind of neuro-machine interaction based active rehabilitation robot.

Phosphoproteomic Analysis of the Brain of Ovariectomized Adult Rat

  • Santos, Ilyn Lyzette;Kim, Kil-Soo;Kim, Jong-Sang;Lim, Jin-Kyu
    • Journal of Applied Biological Chemistry
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    • v.54 no.2
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    • pp.101-107
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    • 2011
  • Aging in females is associated with a reduced metabolic function, increased incidence of neurodegenerative diseases, and cognitive dysfunction, as a result of loss in gonadal function. The change can alter the states of phosphorylation on the proteins, which cause dramatic changes in the cellular location or activity of the proteins. In this study, the differential phosphorylation of the proteins responsible for the functions related to cognition was studied using the ovariectomized adult rats. Phosphoproteomic analysis using the cerebral and hippocampal tissues could identify 51 differentially phosphorylated proteins including 12 proteins for energy metabolism, 8 cytoskeletal proteins, 6 signaling proteins, and other functional proteins in the ovariectomized rats. Further, anti-oxidative enzymes, superoxide dismutase and peroxiredoxin-2, which are known to be inactivated by phosphorylation, were found to be differentially phosphorylated in the cerebellum and hippocampus of the ovariectomized rats, respectively. Many of the deactivated proteins by differential phosphorylation identified in this study were overlapped to those of Alzheimer's disease cases. These results will provide information for neurodegenerative learning and memory impairments in women as brought about by menopause.

Pediatric approach to early detection of learning disabilities (학습장애의 조기 발견을 위한 소아과적 접근)

  • Sung, In Kyung
    • Clinical and Experimental Pediatrics
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    • v.51 no.9
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    • pp.911-921
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    • 2008
  • Learning disabilities (LD) are heterogeneous group of disorders with evidences of genetic or familial trait, intrinsic to the individual and presume to be due to central nervous dysfunction. Learning disabilities and attention deficit hyperactivity disorder (ADHD) are the two of the most common disorders in the population of school-age children. Typically academic achievements in children with learning disabilities are significantly lower than expected by their normal or above normal range of IQ. Although academic and cognitive deficits are hallmarks of children with LD, those children are also at risk for a broad range of behavioral and emotional problems. Almost all cases meet criteria for at least one additional diagnosis such as ADHD, developmental coordination disorder, depression, anxiety, obsessive compulsive disorder, tic disorder, among which ADHD is particularly predominant. Because of the response to the therapeutic intervention program is promising and positive when applied early, it is critical to recognize patients as early as possible. Pediatricians often are the first to hear from parents worried about a childs academic progress. It is not the responsibility of pediatrician to make a diagnosis, referring children for a diagnostic evaluation of LD is a reasonable first step. Pediatricians can make early referral of suspicious children by asking some serial short questions about basic and processing skills. With a basic knowledge about the clinical characteristics, diagnostic and therapeutic procedures of LD, pediatricians also can provide primary counseling and education for parents at their outpatient clinical settings.

The Iceberg Nature of Fibromyalgia Burden: The Clinical and Economic Aspects

  • Ghavidel-Parsa, Banafsheh;Bidari, Ali;Maafi, Alireza Amir;Ghalebaghi, Babak
    • The Korean Journal of Pain
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    • v.28 no.3
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    • pp.169-176
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    • 2015
  • This review has focused on important but less visible aspects of fibromyalgia (FM) with respect to the high impact of this disorder on patients and societies. FM is a common but challengeable illness. It is characterized by chronic widespread pain, which can be accompanied by other symptoms including fatigue, sleep disturbances, cognitive dysfunction, anxiety and depressive episodes. While our understanding of this debilitating disorder is limited, diagnosis and treatment of this condition is very difficult, even in the hands of experts. Due to the nature of disease, where patients experience invalidation by medical services, their families and societies regarding the recognition and management of disease, direct, indirect and immeasurable costs are considerable. These clinical and economic costs are comparable with other common diseases, such as diabetes, hypertension and osteoarthritis, but the latter usually receives much more attention from healthcare and non-healthcare resources. Present alarming data shows the grave and "iceberg-like" burden of FM despite the benign appearance of this disorder and highlights the urgent need both for greater awareness of the disease among medical services and societies, as well as for more research focused on easily used diagnostic methods and target specific treatment.

Effects of MeOH Extract of Impatiens balsamina L. on the Metabolism of Amyloid Precursor Protein in Neuroblastoma Cells (봉선화 전초의 메탄올 추출물이 신경세포에서 아밀로이드 전구단백질의 대사에 미치는 영향)

  • Jo, Yoon Jeong;Leem, Jae Yoon
    • Korean Journal of Pharmacognosy
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    • v.46 no.1
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    • pp.72-77
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    • 2015
  • One of the most common forms of dementia, Alzheimer's disease (AD) is a progressive neurodegenerative disorder symptomatically characterized by impairment in memory and cognitive abilities. AD is characterized pathologically by the presence of intracellular neurofibrillary tangles and deposition of ${\beta}$-amyloid ($A{\beta}$) peptides, believed to be neurotoxic and now is also considered to have a role on the mechanism of memory dysfunction. In this study, we tested that MeOH extract of Impatiens balsamina L. (IBM) affects on the processing of APP from the APPswe over-expressing Neuro2a cell line. We found that IBM increased over 2 folds of the $sAPP{\alpha}$ secretion level, a main metabolite of ${\alpha}$-secretase. We shown that IBM reduced the secretion level of $A{\beta}42$ and $A{\beta}40$ without cytotoxicity. BACE (${\beta}$-site APP cleaving enzyme) FRET assay shown that BACE activity was specifically decreased in the presence of IBM. We suggest that Impatiens balsamina L. may be an useful source to develop a herbal medicine of BACE inhibitor for Alzheimer's disease.

Copper Deficient Anemia in Severe Protein-Energy Malnutrition due to Child Abuse (아동학대로 인해 발생한 중증 단백-에너지 영양실조 환아에서 동반된 구리결핍증 빈혈 1예)

  • Byun, Sung-Hwan;Jeon, Je-Deok;Chang, Soo-Hee
    • Pediatric Gastroenterology, Hepatology & Nutrition
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    • v.10 no.1
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    • pp.60-65
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    • 2007
  • An unconscious 5-year-old girl was admitted to the Intensive Care Unit. She was neglected by her parents; she suffered from inadequate nutritional, medical and emotional care. The girl appeared to be emotionally detached, dehydrated and malnourished; she had edematous extremities, moderately bruised skin and brittle coarse hair. Laboratory testing showed electrolyte imbalance, anemia, pneumonia, copper deficiency, and liver dysfunction in addition to severe protein-energy malnutrition (PEM). Medical intervention was followed by improvement of most of the symptoms. During the rehabilitation phase, the patient showed a voracious appetite and gained weight too fast. The liver became enlarged and the patient developed a mild fever due to excessive nutrition. The microcytic anemia with severe PEM did not responded to iron supplementation possibly due to the copper deficiency. Addition of copper without zinc and iron helped to improve the anemia. The patient was discharged to a childcare center where she received cognitive and psychosocial therapy.

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The Acetylcholinesterase Inhibitory Activity of the EtOH Extract of Chaenomelis Fructus and its effects on the Metabolism of Amyloid Precursor Protein in Neuroblastoma Cells (모과 에탄올 추출물의 아세틸콜린에스테라제 저해활성과 신경세포에서 아밀로이드 전구단백질의 대사에 미치는 영향)

  • Kim, Ju Eun;Jo, Youn Jeong;Leem, Jae Yoon
    • Korean Journal of Pharmacognosy
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    • v.46 no.4
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    • pp.327-333
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    • 2015
  • Alzheimer's disease (AD) is a progressive neurodegenerative disorder symptomatically characterized by impairment in memory and cognitive abilities. AD is characterized pathologically by the deposition of ${\beta}$-amyloid ($A{\beta}$) peptides of 40-42 residues, which are generated by processing of amyloid precursor protein (APP). $A{\beta}$ has been believed to be neurotoxic and now is also considered to have a role on the mechanism of memory dysfunction. In this study, we tested that EtOH extract of the fruits of Chaenomeles sinensis Koehne (CSE) affects on the processing of APP from the APPswe over-expressing Neuro2a cell line. We found that CSE increased over 2 folds of the $sAPP{\alpha}$ secretion level, a metabolite of ${\alpha}$-secretase. We showed that CSE reduced the secretion level of $A{\beta}42$ and $A{\beta}40$ by down regulation of ${\beta}$-secretase (BACE) without cytotoxicity. Furthermore, we found that CSE inhibited BACE and acetylcholinesterase activity in vitro. We suggest that Chaenomelis Fructus may be an useful source to develop a herbal medicine for AD.