• 제목/요약/키워드: Neuropsychological model

검색결과 14건 처리시간 0.02초

Diagnosis of Alzheimer's disease through measurement of anti-beta amyloid antibody in patient's serum

  • Sohn, Ji-Hoon;Kim, Hee;So, Jung-On;Huh, Ji-Yeon;Kim, Jong-Won;Kim, Man-Ho;MookJung, In-Hee;Kim, Young-Ho
    • 한국응용약물학회:학술대회논문집
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    • 한국응용약물학회 2006년도 Spring Conference
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    • pp.139-149
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    • 2006
  • Amyloid beta (A$\beta$) is believed one of the major pathogens of Alzheimer's disease (AD), and the reduction of A$\beta$ is considered a primary therapeutic target. Immunization with A$\beta$ can reduce A$\beta$ burden and pathological features in transgenic AD model mouse. This means anti-A$\beta$ autoantibodies may have a role in AD pathology. Recent findings suggest anti-A$\beta$ autoantibodies level decrease in AD patients. The early detection of AD is important for treatment of this disease. However, diagnosis on AD has only been possible through limited methods such as neuropsychological examination or MRI. To investigate whether it was possible to detect the presence and different levels of naturally occurring anti-A$\beta$ autoantibodies in the plasma of patients with AD and age-matched controls. An advanced ELISA was performed to detect levels of naturally occurring anti-A$\beta$ autoantibodies in the plasma. The level of anti-A$\beta$ auto-antibodies from patients with idiopathic Parkinson's disease or stroke and from normal controls were compared to that of AD patients. Our results showed a significantly lower anti-A$\beta$ autoantibodies level in AD compared to those with other neurological diseases or control. The level of anti-A$\beta$ autoantibodies in the serum may be used to diagnose the presence of AD.

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Diagnosis of Alzheimer's disease through measurement of anti-beta amyloid antibody in patient's serum

  • Sohn, Ji-Hoon;Kim, Hee;So, Jung-On;Huh, Ji-Yeon;Kim, Jong-Won;Kim, Man-Ho;MookJung, In-Hee;Kim, Young-Ho
    • 한국약용작물학회:학술대회논문집
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    • 한국약용작물학회 2006년도 Spring Conference
    • /
    • pp.137-149
    • /
    • 2006
  • Amyloid beta ($A{\beta}$) is believed one of the major pathogens of Alzheimer's disease (AD), and the reduction of $A{\beta}$ is considered a primary therapeutic target. Immunization with $A{\beta}$ can reduce $A{\beta}$ burden and pathological features in transgenic AD model mouse. This means $anti-A{\beta}$ autoantibodies may have a role in AD pathology. Recent findings suggest $anti-A{\beta}$ autoantibodies level decrease in AD patients. The early detection of AD is important for treatment of this disease. However, diagnosis on AD has only been possible through limited methods such as neuropsychological examination or MRI. To investigate whether it was possible to detect the presence and different levels of naturally occurring $anti-A{\beta}$ autoantibodies in the plasma of patients with AD and age-matched controls. An advanced ELISA was performed to detect levels of naturally occurring $anti-A{\beta}$ autoantibodies in the plasma. The level of $anti-A{\beta}$ auto-antibodies from patients with idiopathic Parkinson's disease or stroke and from normal controls were compared to that of AD patients. Our results showed a significantly lower $anti-A{\beta}$ autoantibodies level in AD compared to those with other neurological diseases or control. The level of $anti-A{\beta}$ autoantibodies in the serum may be used to diagnose the presence of AD.

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Study Design and Baseline Results in a Cohort Study to Identify Predictors for the Clinical Progression to Mild Cognitive Impairment or Dementia From Subjective Cognitive Decline (CoSCo) Study

  • SeongHee Ho;Yun Jeong Hong;Jee Hyang Jeong;Kee Hyung Park;SangYun Kim;Min Jeong Wang;Seong Hye Choi;SeungHyun Han;Dong Won Yang
    • 대한치매학회지
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    • 제21권4호
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    • pp.147-161
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    • 2022
  • Background and Purpose: Subjective cognitive decline (SCD) refers to the self-perception of cognitive decline with normal performance on objective neuropsychological tests. SCD, which is the first help-seeking stage and the last stage before the clinical disease stage, can be considered to be the most appropriate time for prevention and treatment. This study aimed to compare characteristics between the amyloid positive and amyloid negative groups of SCD patients. Methods: A cohort study to identify predictors for the clinical progression to mild cognitive impairment (MCI) or dementia from subjective cognitive decline (CoSCo) study is a multicenter, prospective observational study conducted in the Republic of Korea. In total, 120 people aged 60 years or above who presented with a complaint of persistent cognitive decline were selected, and various risk factors were measured among these participants. Continuous variables were analyzed using the Wilcoxon rank-sum test, and categorical variables were analyzed using the χ2 test or Fisher's exact test. Logistic regression models were used to assess the predictors of amyloid positivity. Results: The multivariate logistic regression model indicated that amyloid positivity on PET was related to a lack of hypertension, atrophy of the left temporal lateral and entorhinal cortex, low body mass index, low waist circumference, less body and visceral fat, fast gait speed, and the presence of the apolipoprotein E ε4 allele in amnestic SCD patients. Conclusions: The CoSCo study is still in progress, and the authors aim to identify the risk factors that are related to the progression of MCI or dementia in amnestic SCD patients through a two-year follow-up longitudinal study.

노인성 우울증 환자에서 수면 장애와 인지기능 저하의 관련성 (Relationship between Sleep Disturbances and Cognitive Impairments in Older Adults with Depression)

  • 이혁주;이정석;김태;윤인영
    • 수면정신생리
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    • 제21권1호
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    • pp.5-13
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    • 2014
  • 목 적: 노인성 우울증에서의 수면장애와 인지기능 저하의 동반은 흔히 나타나는 증상이다. 본 연구의 목적은 지역 사회에 살고 있는 노인 우울증 환자에서 나타나는 수면장애와 인지기능 저하의 양상을 파악하고 수면장애가 인지기능 저하와의 상관관계를 살펴보는 것이다. 방 법: 본 연구의 대상자들은 지역사회에 거주하고 치매 등의 인지기능 장애를 가지고 있지 않으며 수면 및 기분, 인지기능에 영향을 주는 정신과 약물을 복용하고 있지 않은 282명의 65세 이상 노인으로 하였다. 우울증의 평가를 위해 노인성 우울척도(Geriatric depression Scale, GDS)를 평가하였으며 GDS 점수에 따라 10점 미만을 대조군으로 하였고 10점 이상 17점 미만을 경도 우울증군, 17점 이상을 중증도 우울증군으로 분류하였다. 모든 대상자들에게 1회의 야간수면다원검사를 시행하여 객관적인 수면지표를 얻었고 피츠버그 수면의 질 지수(PSQI)를 평가하여 주관적인 수면의 질을 평가하였으며 CERAD-K 신경심리검사를 통하여 인지기능을 평가하였다. 결 과: 연구 대상자들의 평균연령, 성별, 내과적 질환 여부는 세 군 간에 유의한 차이가 없었으나 교육 연한은 대조군에 비해 중증도 우울증군에서 유의하게 낮은 결과를 보였다(p=0.015). 수면다원검사와 피츠버그 수면의 질 지수를 통하여 얻어진 수면지표들 중 REM수면시간, 무호흡-저호흡 지수, 산소 탈포화 지수, PSQI 점수는 세 군 간에 유의한 차이가 있었다(모든 p<0.05). 신경인지기능검사 결과에서는 단어목록재인검사, 스트룹 색깔 및 단어검사, 벤톤 시각 기억 검사-A, 길 만들기 검사-B에서 세 군 간에 통계적으로 유의한 차이가 나타났다(모든 p<0.05). 우울증군에서의 수면장애와 인지기능 저하 간에 상호 인과 관계를 알아보기 위한 Pearson 상관분석과 단계적 다중선형회귀분석 결과 수면장애와 인지기능 저하 간에 상호 관련성은 없는 것으로 나타났다. 결 론: 본 연구에서 노인성 우울증 환자에서 나타나는 수면무호흡증을 제외한 수면장애는 인지기능 저하에 직접적인 영향을 미치지는 않는 것으로 나타났다. 이러한 결과는 노령화에 따른 수면장애 및 수면구조의 변화와 연령, 교육 수준 등의 영향으로 인한 것으로 보인다. 그러나 노인 인구에서의 수면장애의 높은 유병률과 잠재적으로 인지기능에 미칠 수 있는 부정적인 영향력을 고려할 때 후속 연구를 통한 노인성 우울증 환자에서의 수면장애와 인지기능 저하의 상호 관련성에 대한 논의가 요구된다.