• Journal of Haehwa Medicine
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• v.7 no.1
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• pp.711-718
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• 1998

• The Journal of the Korea Contents Association
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• v.20 no.10
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• pp.385-394
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• 2020

This study was carried out to investigate the post stroke depression (PSD) occurrence in acute stroke patients and to identify the factors that influence PSD. The study subjects were 104 adults in their 20s or older who were scheduled to be discharged due to inpatient treatment for ischemic stroke in two hospitals. Data were collected using Post Stroke Depression Scale for PSD, Multidimensional Scale of Perceived Social Support for social support, National Institutes of Health Stroke Scale for stroke severity, and Modified Rankin Scale for disability. The average length of stay after stroke onset of the study subjects was 5.9±2.1 days, and 79.8% were within 7 days. Stroke severity score was an average of 2.4±2.5 out of 42 points, and disability score was an average of 1.6±1.1 out of 6 points. Among the subjects, 32.7% had mild or more severe depression after stroke. The subjects with no religion, severe disability, high stroke severity, and less family support had a higher likelihood of experiencing PSD. These results show that depression can appear in the early stages of stroke onset. Therefore, it is necessary to develop nursing guidelines for depression intervention after acute stroke, including continuous early assessment of depression from the acute phase of stroke and religion or family support.

• Journal of Korean Biological Nursing Science
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• v.11 no.1
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• pp.14-22
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• 2009

Purpose: This study was conducted to examine the clinical factors which affected the amount and the duration of infusion of intravenous (IV) heparin on ischemic stroke. Method: A cross-sectional descriptive study was designed to examine the factors. A total of 101 patients with ischemic stroke from a University hospital in G-city, Korea from January to December, 2006 were participated in this study. Data were analyzed by t- and ANOVA test, correlation coefficient, and stepwise multiple linear regression analysis. Result: This study showed that the patients who have been temporarily stopped to infuse iv heparin for more than one hour, had cardioembolic stroke, and had the lower count of initial red blood cell (RBC) had significantly lower amount of iv heparin infusion per body surface. In addition, this study founded that the patients with lower count of initial RBC and the lower level of initial blood sugar were significantly less likely to have the lower length of iv heparin infusion. Conclusion: Continuous monitoring and controlling the count of RBC and the level of blood sugar are needed to increase the efficacy of iv heparin therapy on ischemic stroke. Further empirical studies should be conducted to support the results of this study.

• The Journal of Korean society of community based occupational therapy
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• v.6 no.1
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• pp.41-48
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• 2016

Objective : We tried to know the improvement and neurological effect of diabetes when the complex exercise training was applied on diabetes that delayed the recovery of the ischemic brain injury. Methods : We performed this study in a animal lab which located in Gyengsangbukdo. We used 10 diabetes rats with ischemic brain injury, which is induced by STZ. We applied the complex exercise training on the rats for 4 weeks. We executed the maze test to confirm the recovery of the brain function and checked the blood sugar to know the improvement. Results : As a result of applying the complex exercise on diabetes rats with ischemic brain injury, there was a significant reduce of error and escape time in 3 weeks and 1 weeks, respectively. There was no difference of the blood sugar in control but there was a significant improvement in experiment group after applying the exercise training in 4 weeks. Conclusion : The senile disease like stroke and diabetes was increased currently. It is important for rehabilitation to improve the quality of life during the remainder of their life. In the study, we've known the improvement of diabetes and the recovery of the brain function when the complex exercise training was applied the rats with both diabetes and the ischemic brain injury.

• Investigative Magnetic Resonance Imaging
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• v.6 no.1
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• pp.55-63
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• 2002

Purpose : We investigated the predictive values of relative CBV measured with perfusion MR imaging, and relative CBF measured with SPECT for tissue outcome in acute ischemic stroke. Material and Methods : Thirteen patients, who had acute unilateral middle cerebral artery occlusion, underwent perfusion MR imaging, and $^{99m}Tc-HMPAO$ SPECT within 6 hours after the onset of symptoms. Lesion-to-contralateral ratios of perfusion parameters were measured, and best cut-off values of both parameter ratios with their accuracy to discriminate between regions with and without evolving infarction were calculated. Results : Mean relative CBV ratios in regions with evolving infarction and without evolving infarction were $0.58{\pm}0.27$ and $0.9{\pm}0.17$ (p < 0.001), and mean relative CBF ratios in those regions were $0.41{\pm}0.22$ and $0.71{\pm}0.14$ (p < 0.001). The best cutoff values to discriminate between regions with and without evolving infarction were estimated to be 0.80 for relative CBV ratio and 0.56 for relative CBF ratio. The sensitivity, specificity and efficiency of each cutoff value were 80.6, 87.5, 82.7% for relative CBV ratio, and 72.2, 75.0, 73.0% for relative CBF ratio (p > 0.05 between two parameters). Conclusion Measurement of relative CBV and relative CBE may be useful in predicting tissue outcome in acute ischemic stroke.

• Journal of Life Science
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• v.30 no.11
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• pp.939-946
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• 2020

Stroke is one of the leading causes of neurological disability worldwide and stroke patients exhibit a range of motor, cognitive, and psychiatric impairments. GPR88 is an orphan G protein-coupled receptor (GPCR) that is highly expressed in striatal medium spiny neurons; its deletion results in poor motor coordination and motor learning. There are currently no studies on the involvement of GPR88 in stroke or in post-stroke brain function recovery. In this study, we found a decrease in GPR88 protein and mRNA expression levels in an ischemic mouse model using Western blot and real-time PCR, respectively. In addition, we observed that, among the three types of cells derived from the brain (brain microvascular endothelial cells, BV2 microglial cells, and HT22 hippocampal neuronal cells), the expression of GPR88 was highest in HT22 neuronal cells, and that GPR88 expression was downregulated in HT22 cells under oxygen-glucose deprivation (OGD) conditions. Moreover, pretreatment with RTI- 13951-33 (10 mg/kg), a brain-penetrant GPR88 agonist, ameliorated brain injury following ischemia, as evidenced by improvements in infarct volume, vestibular-motor function, and neurological score. Collectively, our results suggest that GPR88 could be a potential drug target for the treatment of central nervous system (CNS) diseases, including ischemic stroke.

• Journal of the Korean Society of Radiology
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• v.83 no.1
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• pp.178-183
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• 2022

Polycythemia vera (PV) is a rare myeloproliferative disease that causes elevated absolute red blood cell (RBC) mass due to uncontrolled RBC production. Moreover, this condition has been associated with a high risk of ischemic stroke and large vessel stenosis or occlusion, with many studies reporting cerebral infarction in PV patients. Despite these findings, there have been no reports on the vessel wall MRI (VW-MRI) findings of the narrowed vessels in PV-associated ischemic stroke patients. To the best of our knowledge, this is the first report in English regarding the carotid VW-MRI findings of a 30-year-old male diagnosed with PV after being hospitalized due to stroke.

• Journal of Life Science
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• v.29 no.11
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• pp.1258-1266
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• 2019

Yangkyuksanhwa-Tang (YKSH), consisting of nine different herbs, is commonly used in Soyangin-type individuals with stroke, based on the Sasang Constitution Theory in Korea. However, no evidence has yet confirmed a beneficial effect of YKSH in ischemic stroke treatment. In this study, we investigated the effects of YKSH on ischemic brain injury in a mouse model of cerebral ischemia. Focal cerebral ischemia in mice was induced by photothrombosis, and behavioral recovery was evaluated. Infarct volume, inflammation, and newly generated cells were evaluated by histology and immunochemistry. YKSH treatment resulted in a significant recovery from the motor impairments induced by focal cerebral ischemia, as determined with wire grip and rotarod tests. YKSH treatment also decreased the infarct volume and the number of cells positive for tumor necrosis factor-${\alpha}$ and myeloperoxidase when compared with a vehicle-treated control group. By contrast, YKSH treatment considerably increased the number of cells positive for glial fibrillary acidic protein and ionized calcium-binding adapter molecule 1, as well as the number of cells doubly positive for Ki67/doublecortin when compared with the vehicle-treated group. These results suggest that YKSH treatment attenuated the infarct size by anti-inflammatory action, astrocyte and microglia activation, and neuronal proliferation, thereby facilitating neurofunctional recovery from a cerebral ischemic assault. YKSH could therefore be a potential treatment for neurofunctional restoration of the injured brains of patients with stroke.

• Journal of Korean Biological Nursing Science
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• v.23 no.3
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• pp.217-226
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• 2021

Purpose: The aim of this study was to investigate the risk factors for brain reperfusion injury in ischemic stroke patients and to analyze the clinical outcomes. Methods: A retrospective study was conducted in 168 patients who underwent mechanical thrombectomy. The data were analyzed using descriptive statistics, t-test, Mann-Whitney U test, Chi-Square test, Fisher's exact test, and logistic regression with IBM SPSS/WIN 24.0. Results: Brain reperfusion injury occurred in 67 patients (39.9%) with a low favored outcome (𝛘²=6.01, p=.014). On multivariable analysis, blood urea nitrogen (Odds ratio [OR]=1.14, 95% Confidence interval [CI]=1.06-1.23), aphasia (OR=6.16, CI=1.62-23.40), anosognosia (OR=4.84, CI=1.13-20.79), presence of both aphasia and anosognosia (OR=7.33, CI=1.20-44.60), and time required to achieve targeted blood pressure (OR=1.00, CI=1.00-1.00) were identified as risk factors for brain reperfusion injury. A statistically significant difference was detected in clinical outcomes, including hemorrhagic transformation (𝛘²=6.32, p=.012), intensive care unit length of stay (Z=-2.08, p=.038), National Institute of Health Stroke scale score at discharge (Z=-3.14, p=.002), and modified Rankin Scale score at discharge (Z=-2.93, p=.003). Conclusion: This study identified the risk factors and presented the clinical outcomes of brain reperfusion injury. It is necessary to consider these risk factors for evaluating the patients and to establish nursing interventions and strategies.

• Proceedings of the Korean Journal of Food and Nutrition Conference
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• 2003.07a
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• pp.82-82
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• 2003

오디는 옛부터 보혈자음(補血滋陰), 생진윤조(生津閏操), 현훈이명(眩最耳鳴), 심계실면(心悸失眠), 수발조백(鬚髮早白) 등을 치료하는 효능을 가진다고 알려져 있다. 상심자(桑 子)라 하여 뽕나무 열매로서 한방에서 상심(桑 ), 상실(桑實), 오심(烏 ), 흑심(黑 ) 등으로 지칭되며, 뽕나무과(Moraceae)에 속하는 뽕나무(Morus alba L)의 성숙한 과실로 취화과(聚花果)에 속하며 작은 수과(瘦果)가 많이 모여 이루어진 장원형으로 길이 1 내지 2 cm, 지름 0.5 내지 0.8 cm이며 황갈색, 갈홍색 또는 암자색을 띠고 짧은 줄기가 있다. 작은 수과(瘦果)는 난원형으로 조금 납작한 편이며, 길이는 약 2 mm, 너비는 약 1 mm 이고 육질의 화편(花片) 4개가 둘러싸고 있다. 그러나 아직까지는 오디에 대하여 자연과학적인 연구방법을 이용하여 구체적으로 연구된 바가 많지 않다. 또한 이의 생리활성 성분에 대해서도 그 작용과 연관지어 보고된 바가 많지 않다. 뇌졸중 가운데 뇌조직으로 가는 혈액 공급의 감소 혹은 차단으로 발생되는 허혈성 뇌졸중(ischemic stroke)은 전체 뇌졸중 환자의 약 80%정도를 차지하고 있으나 아직까지 뇌신경세포 손상기전의 복잡성 등으로 뇌졸중으로 발생하는 뇌신경세포의 손상을 보호해 줄 수 있는 물질이 개발되어 있지 못한 실정이다. 한편, 천연물로부터 뇌허혈 보호작용을 가지는 물질의 도출은 주로 한방에서 처방을 중심으로 이루어지고 있으며, 따라서 처방으로부터 신경보호작용을 가지는 물질의 도출은 그 처방에 함유되어 있는 각종 생약이 갖는 다양한 활성으로 인해 어려운 점이 있으며, 비록 효과가 있다고 하더라도 과학적인 입증자료가 매우 미비한 실정이다. 이에 본 연구에서는 위에 언급된 자료를 토대로 오디추출물이 뇌허혈에 효과가 있을 것이라는 가정하에 in vitro system을 이용하여 오디추출물의 신경보호작용기전을 검색하고자 DPPH radical 의 생성억제효과, PC12 cell line을 이용한 산화적 스트레스에 의한 오디추출물의 방어효과, LSP에 의하여 활성화된 BV-2 cell에 미치는 영향 등을 검색하였다. 오디의 DPPH 소거활성은 단일화랍물인 bacicalein과 유사한 효과를 나타냈으며 PC12 cell line을 이용한 산화적 스트레스에 의한 오디의 방어 효과는 LDH activity를 행한 결과 농도 의존적으로 LDH 유리 량을 감소시켰다. 뇌손상시에 오디추출물의 염증방어 효과를 관찰하기 위하여 microglial cell line인 BV2 세포주를 선택하여 배양한 후 LPS로 자극을 준 후 일차적인 염증지표인 NO양을 측정한 결과 BV2 cell에 LPS 100 ng/ml을 처리하는 경우 nitrite량이 유의적으로 증가하였는데 이때 오디추출물을 1, 5, 10 ug/ml의 용량으로 처리하는 경우 역시 저농도에서 NO생성량을 감소시켰다. 정리해보면 뽕나무과 식물인 오디는 신경보호효과가 있는 것으로 사료되는데 이러한 효과는 아마도 오디의 항산화효과에 기인한 것으로 추정된다.