Young Jin Koo

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1. In order to find the electroencephalographic (EEG) parameters that reflect the effect of clozapine in schizophrenic patients, the authors applied various non-linear analyses on multi-channel EEG data drawn from patients before and after a therapeutic trial of clozapine. 2. The correlation dimension was difficult to extract from our limited time series(More)
The dysbindin gene (DTNBP1) has been associated with schizophrenia in several populations. Because the clinical characteristics of schizophrenia and bipolar disorder overlap in many respects and findings from genetic studies have suggested common genes between them, we conducted a case control association study of bipolar disorder in Korea to investigate(More)
The dysbindin gene (DTNBP1) is located in chromosome 6p22.3, one of the regions of positive linkage for schizophrenia. A strong genetic association between DTNBP1 and schizophrenia has been replicated through many recent studies. In particular, dysbindin protein has been found to play a role in the glutamate neural transmission in the brain. In this study,(More)
The effects of chronic electroconvulsive shock (ECS), given daily for 1, 5 and 10 days, on the activation of extracellular signal-regulated kinase (ERK) were studied in the rat frontal cortex. The phosphorylation of MEK1/2 and ERK1/2 increased through 5 days of ECS. Thereafter, a plateau was achieved. The expression of brain-derived neurotrophic factor was(More)
BACKGROUND Cardiovascular side effects of clozapine are not uncommon, but few systematic studies of these effects have been performed. In this study, we reviewed data on the electrocardiographic (ECG) abnormalities in patients treated with clozapine. METHOD Sixty-one patients treated with clozapine were selected from the Seoul National University Hospital(More)
According to the recommended guidelines by Novartis, neutropenia in the range of a white blood cell count less than 3000 per mm, or an absolute neutrophil count (ANC) less than 1500 per mm, is classified as being in the 'red-alert zone' during clozapine treatment. If a patient's blood test result falls into this zone, immediate discontinuation of clozapine(More)
PURPOSE Early pubertal timing in girls is associated with psychological and behavioral problems. This study aimed to evaluate the psychological features of girls who perceived breast development beginning by analyzing their depression levels and self-concept. METHODS From March 2007 to December 2012, 93 girls were enrolled and assigned to a pre-8 (younger(More)
For diagnosis and management of post-traumatic stress disorder (PTSD), the easily administered assessment tool is essential. Structured Interview for PTSD (SIP) is a validated, 17-item, simple measurement being used widely. We aimed to develop the Korean version of SIP (K-SIP) and investigated its psychometric properties. Ninety-three subjects with PTSD, 73(More)
AIMS The Short Post-traumatic Stress Disorder (PTSD) Rating Interview (SPRINT) is a validated, eight-item, brief global assessment scale for PTSD. This report investigated the psychometric properties of the Korean version of the SPRINT (K-SPRINT). METHODS Eighty-seven PTSD patients, 47 other psychiatric patients, and 63 healthy control subjects were(More)
Amphiphysin II (Amph2) is known to undergo rapid dephosphorylation and phosphorylation at nerve terminals. After in vivo electroconvulsive shock (ECS) in the rat cerebellum, we found an electrophoretic mobility retardation of Amph2, which suggested an increased degree of phosphorylation above the non-stimulated level. This shifted signal was observed from 1(More)
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