• 대한본초학회지
• /
• 제28권2호
• /
• pp.25-31
• /
• 2013

Objectives : The purpose of this study was to characterize the effect of the Ethanolic extracts of Platycodon grandiflorum and its permented production the learning and memory impairments induced by scopolamine. Methods : The cognition-enhancing effect of Platycodon grandiflorum and its permented production were investigated using a passive avoidance test, the Morris water maze test and Y-maze test in mice. Drug-induced amnesia was induced by treating animals with scopolamine (1 mg/kg, i.p.). Results : The results showed that the Permented Platycodon grandiflorum extract-treated group (100 mg/kg, p.o.) and the tacrine-treated group (10 mg/kg, p.o.) significantly ameliorated scopolamine-induced amnesia based on the Passive avoidance Y-maze test and Water maze test. And these results are same manner in DPPH radical scavenger effect and Acetylcholineseterase inhibition effect. Conclusions : These results suggest that 80% Ethanol extract of fermented P.grandiflorum showed significant anti-amnestic and cognitive-enhancing activities related to the memory processes, and these activities were parallel to treatment duration and dependent of the learning models.

• IMMUNE NETWORK
• /
• 제20권3호
• /
• pp.23.1-23.20
• /
• 2020

Sepsis is conceptually defined as life-threatening organ dysfunction that is caused by a dysregulated host response to infection. Although there has been significant advancement in recent decades in defining and understanding sepsis pathology, clinical management of sepsis is challenging due to difficulties in diagnosis, a lack of reliable prognostic biomarkers, and treatment options that are largely limited to antibiotic therapy and fundamental supportive measures. The lack of reliable diagnostic and prognostic tests makes it difficult to triage patients who are in need of more urgent care. Furthermore, while the acute inpatient treatment of sepsis warrants ongoing attention and investigation, efforts must also be directed toward longer term survival and outcomes. Sepsis survivors experience incomplete recovery, with long-term health impairments that may require both cognitive and physical treatment and rehabilitation. This review summarizes recent advances in sepsis prognosis research and discusses progress made in elucidating the underlying causes of prolonged health deficits experienced by patients surviving the early phases of sepsis.

• 수면정신생리
• /
• 제20권1호
• /
• pp.15-21
• /
• 2013

목 적: 하지불안증후군에서의 인지기능 저하는 흔히 동반되는 수면박탈, 불안, 우울 등에 의해 영향을 받는다. 본 연구의 목적은 투약 받지 않고 있는 한국 노인 인구에서 하지불안증후군과 인지기능 저하와의 관련성을 동반 증상의 영향을 배제하고 살펴보는 것이다. 방 법: 연구대상은 25명의 투약 받고 있지 않은 한국 노인 하지불안증후군 환자군과 나이, 성별, 교육연한에 따라 짝지은 50명의 대조군이다. 모든 연구대상에 대해 CERAD-K 신경심리평가, 중증인지감퇴평가 척도, 전두엽 기능 평가, 그리고 시계 그리기 검사(CLOX)를 포함한 광범위한 인지기능 평가를 시행하였다. 또한 수면의 질 평가를 위해 피츠버그 수면의 질 지수(Pittsburgh Sleep Quality Index, PSQI), 우울증의 평가를 위해 노인우울척도(Geriatric Depression Scale, GDS)를 사용하였다. 결 과: 환자군과 대조군 사이의 PSQI와 GDS 점수의 차이는 없었다. 구성 재인 검사에서 환자군이 대조군에 비해 더 낮은 점수를 보였으며(t=-2.384, p=0.02), 이를 제외한 모든 영역의 인지기능 평가에서 환자군과 대조군의 유의미한 차이는 관찰되지 않았다. 우울감이 있는 대상($GDS{\geq}10$)은 그렇지 않은 군에 비해 언어 유창성, 간이 정신상태 검사, 단어목록기억, 길 만들기 검사, 전두엽 기능 평가의 영역에서 유의한 인지기능 저하를 보였다. 수면의 질이 낮은 대상(PSQI>5)은 그렇지 않은 군에 비해 인지기능 평가의 전 영역에서 차이를 보이지 않았다. 결 론: 본 연구에서 하지불안증후군 환자군을 대조군과 비교한 결과 환자군은 불면과 우울의 영향을 배제하면 비교적 인지기능이 보존된 것으로 관찰되었다. 환자군에서 관찰되었던 시각 인지 영역의 저하는 하지불안증후군에서의 도파민 신경전달계의 장애와 연관하여 해석해 볼 수 있다.

• Tuberculosis and Respiratory Diseases
• /
• 제39권1호
• /
• pp.7-14
• /
• 1992

연구배경 : 동맥혈가스 변화에 따른 호흡곤란 및 의식장애는 만성 폐쇄성 폐질환 환자들을 포함한 여러 호흡기 질환 환자들에게서 비교적 흔히 관찰할 수 있다. 그러나 실제로는 같은 질환이라 할지라도 동맥혈가스 변화에 따른 호흡곤란 및 의식장애의 정도는 환자에 따라 매우 다양하다. 한편 만성 폐쇄성 폐질환은 폐기종 우세형과 기관지염 우세형의 두가지 임상군으로 구분할 수 있는데, 이에 저자들은 만성 폐쇄성 폐질환에서 호흡곤란을 느낄 당시의 중추신경계의 반응과 의식장애에 많은영향을 미치는 동액혈가스 소견이 임상군에 따라 차이가 있는지를 규명하고자 본 연구를 시행하였다. 방법 : 16명의 만성 폐쇄성 폐질환 환자들을 대상으로 동맥혈가스 및 인지기능의 척도로 이용되고 있는 trail-making B test를 실시한 후, 다시 이들을 폐기종 우세형군과 기관지염 우세형군으로 분류하고, 각 환자군에서의 인지기능 및 인지기능과 동맥혈가스와의 상관관계를 서로 비교하였다. 결과 : 1) 평균 TMB score는 폐기종 우세형군이 $266.33{\pm}171.62$초, 기관지염 우세형군이 $200.29{\pm}123.13$초로서, 폐기종 우세행군이 기관지염 우세형군에 비해 호흡 곤란을 느낄 당시의 인지기능장애가 다소 심한 경향이 있었다. 2) 두 환자군 모두 저산소혈증, 과탄산혈중 및 산혈증이 심할수록 인지기능장애가 심해지는 경향을 보였다. 3) 폐기종 우세형군에서 TMB score와 동맥혈가스와의 상관계수(r)는 각각 TMB $PaO_2$: -0.477, TMB $-PaCO_2$ : 0.693, TMB-pH : -0.375, TMB-$HCO_3$ : 0.665로서, 폐기종 우세형군에서는 $PaCO_2$가 인지기능의 변화에 가장 많은 영향을 미치는 것으로 나타났다. 4) 기관지염 우세형군에서의 TMB score와 동맥혈 가스와의 상관계수(r)는 각각 TMB-$PaO_2$ : -0.306, TMB-$PaCO_2$ : 0.347, TMB-pH: -0.526, TMB-$HCO_3$ : 0.366으로서, 기관지염 우세형 환자군에서는 pH가 인지가능 변화에 가장 많은 영향을 주는 것으로 나타났다. 5) 저산소혈증, 과탄산혈증시의 인지기능장애는 폐기종 우세형군이 기관지염 우세형군에 비해 다소 심한 경향을 보였으며, 산혈증시의 인지기능장애는 오히려 기관지염 우세형군이 폐기종 우세형군에 비해 다소 심한 경향을 보였다. 결론 : 이상의 연구 결과 만성 폐쇄성 폐질환 환자들에서 호흡곤란을 느낄 당시의 중추신경계의 반응은 페기종 우세형군이나 기관지염 우세형군간에 근본적인 차이는 없지만, 인지기능에 많은 영향을 미치는 동맥혈가스 소견은 서로 다르다는 것을 알았다.

• Biomolecules & Therapeutics
• /
• 제23권3호
• /
• pp.251-260
• /
• 2015

Propofol is an anesthetic agent that gained wide use because of its fast induction of anesthesia and rapid recovery post-anesthesia. However, previous studies have reported immediate neurodegeneration and long-term impairment in spatial learning and memory from repeated neonatal propofol administration in animals. Yet, none of those studies has explored the sex-specific long-term physical changes and behavioral alterations such as social (sociability and social preference), emotional (anxiety), and other cognitive functions (spatial working, recognition, and avoidance memory) after neonatal propofol treatment. Seven-day-old Wistar-Kyoto (WKY) rats underwent repeated daily intraperitoneal injections of propofol or normal saline for 7 days. Starting fourth week of age and onwards, rats were subjected to behavior tests including open-field, elevated-plus-maze, Y-maze, 3-chamber social interaction, novel-object-recognition, passive-avoidance, and rotarod. Rats were sacrificed at 9 weeks and hippocampal protein expressions were analyzed by Western blot. Results revealed long-term body weight gain alterations in the growing rats and sex-specific impairments in spatial (female) and recognition (male) learning and memory paradigms. A markedly decreased expression of hippocampal NMDA receptor GluN1 subunit in female- and increased expression of AMPA GluR1 subunit protein expression in male rats were also found. Other aspects of behaviors such as locomotor activity and coordination, anxiety, sociability, social preference and avoidance learning and memory were not generally affected. These results suggest that neonatal repeated propofol administration disrupts normal growth and some aspects of neurodevelopment in rats in a sex-specific manner.

• 정신신체의학
• /
• 제4권2호
• /
• pp.170-181
• /
• 1996

Objective : This study was tried to investigate the specific relationships among cognitve function, neurbehavioral symptoms, and daily living functions, as well as provide the guidline of more proper clinical approches for patients with subcortical cerebrovascular disease. Objects and Methods Subjects were 85 patients whose diagnosis was confirmed by brain CT or MRI and controls were 195 normal persons matched by educational level with the subjects. The cognitive functions were evaluated by BNA(Benton neuropsychiatric assessment), subjective neurobehavioral symptoms by SCL-90-R(Sympton Check List-90-Revised), objective neurobehavioral symptoms by NRS(Neurobehavioral Rating Scale), and daily living function symptoms by NRS(Neurobehavioral Rating Scale), and daily living function by GERRI(Geriatric Evaluation by Relative's Rating Instrument) and IADL(Instrumental Activities of Daily Living Scale). Results: 1) Subjects showed significantly lower cognitive functions than controls in all tests of BNA except Lt-Rt Orientation Test(p=0.09) and facial Recognition Test(p=0.186). 2) In subjective neurobehavioral symptoms, subjects showed significantly lower scores in all symptoms except anxiety(p=0.059), hostility(p=0.159), and phobic anxiety(p=0.849). But in objects neurobehavioral symptoms, subjects showed significantly higher in scores in psychoticism (p=0.000) and neuroticism(p=0.025) of NRS. 3) The score of social functioning of GERRI(p=0.000) and that of IADL(p=0.000) were significantly higher in subjects than in controls. 4) for correlation between cognitive and daily living functions, there were significant correlations between the scores of all items on BNA and the score of cognitive or social function of GERRI and the socre of MDL in corntrols, whereas in subjects, there were significant correlations only between the scores of BNA and the score of IADL. 5) for correlation between neuroehavioral symptoms and daily living functions, there were significant correlatons between the socre of subjective neurobehavioral symptoms and the scores of all subscales of GERRI and the score of MDL in controls. On the contrary, in subjects, there were significant correlations between the score of social function of GERRI and the score of objective neurobehavioral symptoms such as psychoticism, agitiation-hostility, and decrease d motivation-emotional withdrawl. Conclusion : Above results suggest that disturbances in specific function of brain may play a role as a predictor of impairments with specific daily living functions and also suggest that specific correlations among various functions may be useful as clinical parameters for setting of the treatment goal and for assessing the ongoing process in the treatment and rehavilitation of the patients with subcortical cerebrovascular disease.

• 생물정신의학
• /
• 제22권2호
• /
• pp.63-77
• /
• 2015

Objectives The combination extract of four kinds of herbs, Gastrodia elata, Liriope platyphylla, Dimocarpus longan, and Salvia miltiorrhiza, has shown to have memory improving effects in mice. The aim of this study was to investigate the efficacy and safety of the herbal mixture for improving working memory as well as microstructural changes in white matter integrity in individuals with subjective memory complaints. Methods Seventy-five individuals with subjective memory complaints were assigned to receive either placebo (n = 15) or herbal mixture (low-dose group, n = 30 and high-dose group, n = 30) supplementation in an 8-week, randomized, double-blind, placebo-controlled clinical trial. Changes in working memory performance and fractional anisotropy (FA) values reflecting white matter integrity from baseline to 8-week endpoint were assessed. Results The herbal mixture group showed an increase in working memory performance compared to the placebo group (p for interaction = 0.001). In addition, the herbal mixture group showed an increase in FA values in the temporo-parietal regions (corrected p < 0.05), which are crucially involved in working memory function and are among the most affected regions in patients with cognitive impairments. Conclusions Findings from this study indicate that the herbal mixture may be a promising therapeutic option for individuals with subjective memory complaints.

• 한국사회복지학
• /
• 제61권3호
• /
• pp.55-76
• /
• 2009

본 연구의 목적은 국내에서 노인복지연구 참여를 위한 고지된 동의과정에 동의능력평가가 활발하게 적용될 수 있도록 한국형 동의능력척도를 실증적으로 검증하는 것이다. 본 연구를 위해 재가복지서비스를 이용하거나 노인복지시설에서 보호를 받고 있는 404명의 노인을 조사하였다. 연구 1(n=202)에서는 동의능력검사척도의 신뢰도, 탐색적 요인분석, 수렴 및 기준 타당도 분석을 하였다. 연구 2(n=202)는 연구 1을 통해 수정된 척도의 신뢰도와 타당도는 내적 신뢰도, 확증적 요인분석, 수렴 및 기준 타당도 분석 등을 통해 검증하였다. 연구결과 본 척도의 내적신뢰도 계수가 .90로 높은 수준이었고, 모델 적합도 지수(RMSEA=.057, NNFI=.94, IFI=.96, CFI=.96)도 양호하게 나타났다. 또한 관련변수와의 높은 상관관계 계수를 통해 수렴 및 기준타당도가 검증되었다. 한국형 동의능력평가척도가 우리나라 노인을 대상으로 임상(clinical) 및 조사(survey)연구 참여를 위해 동의능력을 평가하는 척도로서 적합함을 통계적으로 확인하였다. 본 척도는 노인을 대상으로 수행될 연구와 프로그램에서 고지된 동의과정을 위해 활용될 것으로 기대된다.

• 대한장애인치과학회지
• /
• 제10권2호
• /
• pp.61-67
• /
• 2014

The aim of this study was to analyze the clinical characteristics of patients with cognitive and behavioral impairments receiving dental treatment under general anesthesia (GA-dental treatment). From August 2007 to April 2014, information was collected from 475 patients who received GA-dental treatment at the Clinic for Persons with Disabilities, Seoul National University Dental Hospital. The demographic factors (gender, age, disability, medication, GA history, residency type, caregiver, meal type, oral hygiene maintenance, and cooperation level) and dental status (operating duration, DMFT, malocclusion, periodontal disease, tooth defect, and treatment protocol) of the patients were evaluated. DMFT and malocclusion levels were compared among the patients with ANOVA and Sheffe's post-hoc test, and chi-square test, respectively. The correlation between the demographic characteristics and dental status of the patients were analyzed with the Pearson's correction test. The mean age of the patients was 27.1 (7 - 83) years and they had intellectual disabilities (55.4%), developmental disorders (17.9%), brain disorders (16.6%), neurocognitive disorders (4.6%), or others (5.5%). The mean DMFT (DT) was 8.6 (5.2) with a significant difference among the disability types (p<0.05). The incidence of malocclusion was higher in patients with intellectual disabilities and brain disorders than in the other types (p<0.05). The operation time ($191.4{\pm}91.2min$) was correlated with decayed or endodontically-treated teeth (p<0.05). Special needs patients requiring GA-dental treatment showed unfavorable oral conditions. Dental practitioners experience time restrictions and additional costs under a GA setting. Treatment planning and decision-making can be efficiently facilitated by evaluating the clinical characteristics of the patients.

• The Korean Journal of Physiology and Pharmacology
• /
• 제24권1호
• /
• pp.27-37
• /
• 2020

Neuroinflammation is an important process underlying a wide variety of neurodegenerative diseases. Carvacrol (CAR) is a phenolic monoterpene commonly used as a food additive due to its antibacterial properties, but it has also been shown to exhibit strong antioxidative, anti-inflammatory, and neuroprotective effects. Here, we sought to investigate the effects of CAR on inflammation in the hippocampus and prefrontal cortex, as well as the molecular mechanisms underlying these effects. In our study, lipopolysaccharide was injected into the lateral ventricle of rats to induce memory impairment and neuroinflammation. Daily administration of CAR (25, 50, and 100 mg/kg) for 21 days improved recognition, discrimination, and memory impairments relative to untreated controls. CAR administration significantly attenuated expression of several inflammatory factors in the brain, including interleukin-1β, tumor necrosis factor-α, and cyclooxygenase-2. In addition, CAR significantly increased expression of brain-derived neurotrophic factor (BDNF) mRNA, and decreased expression of Toll-like receptor 4 (TLR4) mRNA. Taken together, these results show that CAR can improve memory impairment caused by neuroinflammation. This cognitive enhancement is due to the anti-inflammatory effects of CAR medicated by its regulation of BDNF and TLR4. Thus, CAR has significant potential as an inhibitor of memory degeneration in neurodegenerative diseases.