N-acetyl cysteine inhibits H2O2-mediated reduction in the mineralization of MC3T3-E1 cells by down-regulating Nrf2/HO-1 pathway

( Daewoo Lee ),( Sung Ho Kook ),( Hyeok Ji ),( Seung Ah Lee ),( Ki Choon Choi ),( Kyung Yeol Lee ),( Jeong Chae Lee ) 생화학분자생물학회(구 한국생화학분자생물학회) 2015 BMB Reports Vol.48 No.11

There are controversial findings regarding the roles of nuclear factor (erythroid-derived 2)-like 2 (Nrf2)/heme oxygenase-1 (HO-1) pathway on bone metabolism under oxidative stress. We investigated how Nrf2/HO-1 pathway affects osteoblast differentiation of MC3T3-E1 cells in response to hydrogen peroxide (H2O2), N-acetyl cysteine (NAC), or both. Exposing the cells to H2O2 decreased the alkaline phosphatase activity, calcium accumulation, and expression of osteoblast markers, such as osteocalcin and runt-related transcription factor-2. In contrast, H2O2 treatment increased the expression of Nrf2 and HO-1 in the cells. Treatment with hemin, a chemical HO-1 inducer, mimicked the inhibitory effect of H2O2 on osteoblast differentiation by increasing the HO-1 expression and decreasing the osteogenic marker genes. Pretreatment with NAC restored all changes induced by H2O2 to near normal levels in the cells. Collectively, our findings suggest that H2O2-mediated activation of Nrf2/HO-1 pathway negatively regulates the osteoblast differentiation, which is inhibited by NAC. [BMB Reports 2015; 48(11): 636-641]

Neuroleptic Malignant Syndrome에 합병되어 나타난 급성 신부전증 1예

채영래,백인호,송정중 大韓神經精神醫學會 1990 신경정신의학 Vol.29 No.4

Neuroleptic malignant syndrome(NMS) is an uncommon but fatal idiosyncratic reaction to neuroleptics. It comprises fever, muscular rigidity, altered consciousness and autonomic dysfunction. The most common serious complications of NMS is rhabdomyolysis, which produces acute myoglobinuric renal failure. The authors experienced a schizophrenic male patient with acute renal failure as a sequela of NMS. The patient was 27-year-old man who had received haloperidol for 9 years. Emergency hemodialysis, hydration and diuretics promoted recovery of impaired renal function. The patient survived the acute episode of NMS without any sequela and resumed his treatment with neuroleptics.

한 정신병원에서의 강박 처치에 대한 입원 환자 및 병원 직원의 지각의 차이

채정호,차성조,함웅,이규항,이정균 大韓神經精神醫學會 1996 신경정신의학 Vol.35 No.5

한 정신병원에서 강박처치의 적응증, 합병증, 대체법, 감정적 영향, 적당한 처치 시간, 처치의 효능과 필요성등을 병원에 입원 중인 환자들과 직원들에게 설문조사를 하여 양 집단간에 차이가 있는 지를 알아봄으로써 환자들과 직원들간에 있는 강박처치에 대한 지각 차이를 조사하고 나아가 강박처치 시행의 규준을 확립하기 위한 기본 자를 제시하기 위하여 본 연구를 시행하였다. 강박처치의 적응증에 대해서 입원환자들은 대부분의 항목에 대해 부정적으로 보았고 단지 타환자에 대한 신체적 공격에 대해서만 다소 긍정적인 반응을 보인 반면 직원들의 경우 자해, 타환자에 대한 신체적 공격, 치료진에 대한 공격 등에 높은 응답율을 보였다. 강박처치의 부작용에 대한 지각은 입원환자의 경우 정신상태의 악화, 자해의 증가 등에 대해 보다 민감하게 반응 하였고, 실제로 경험한 부작용에 있어서는 직원들의 경우 피부박탈을 더 강조한 반면 환자군에서는 호흡곤란, 정신 상태의 악화 등을 강조하였다. 강제 처치에 대한 대체치료 방법으로는 환자군에서 면담을 중요시한 반면 직원군에서는 격리실의 이용을 강조하였다. 신체억제와 고용량의 정온화를 비교한 것은 환자군에서 신체억제가 더 효과적이라고 하였다. 신체억제 동안 느끼는 감정에 대한 지각에서 환자군은 슬픔을 가장 많이 보고하였고, 직원군은 적개심을 가장 많이 느낄 것으로 추정하였다. 신체억제의 시간에 대해서는 환자군이 긴 것으로 지각하고 있으며, 이상적인 신체억제의 시간은 환자군이 짧은 것이 좋다고 생각하고 있었다. 본 연구 결과 정신과 입원환자들과 병원직원들은 강박처치에 대하여 유의한 지각의 차이가 있다는 것을 알았으며 정신병원내에서 강제처치를 실시할 때에는 명확한 강박처치 시행에 대한 규준에 따라야 할 것임을 확인할 수 있었다. Objectives : The purpose of this study was to examine different perceptions of physical restraint and their nature between psychiatric inpatients and hospital staffs in a mental hospital and to provide baseline data for establishing the practicing standard of this therapeutic maneuver. Methods : Two hundred and two psychiatric inpatients who experienced physical restraint and 103 hospital staffs who frequently used this maneurer were surveyed with a questionnaire regarding indications, complications, alternative methods, emotional influences, duration of treatment and subjective effects of restraint. Results : Regarding indications of physical restraint, the inpatient group had negative viewpoint on the most items except "physical assault to other patients". Regarding the perception about possible complications of this treatment, the inpatient group had more concerns about "deterioration of mental status" and "increasing risk of self-injury". For experienced complications, staffs stressed "skin abrasion " while inpatients believed of "respiratory difficulties" and "deterioration of mental status" more frequently. As alternative methods of physical restraint, "increasing frequency of interview" was suggested by the inpatient group and "using seclusion room" was favored by the staff group. The inpatient group had an impression that physical restraint was more effective than high-dose neuroleptic tranquilization. For suspected emotion during this procedure, the inpatient group reported "sorrow" most frequently while the staff group presumed that "hostility" might be most frequent. Inpatients estimated that the average duration of physical restraint was longer than staffs did. Ideal duration of physical restraint was shorter in the inpatient group. Conclusion : These results suggest that there are definite differences in the perception of physical restraint between psychiatric inpatients and hospital staffs. Formal practing guideline for restraint should be set up with careful attention for these differences to maximize the therapeutic effect of this maneuver.

항정신병 약물 비폭로, 치료 중 및 만성 시설화 정신분열증 환자에서의 연성 신경학적 징후의 비교

채정호,이규항,백인호,이정균 大韓神經精神醫學會 1997 신경정신의학 Vol.36 No.2

Objects : Many studies have demonstrated greater frequency of soft neurologic signs in patients with schizophrenia than in controls. However, factors associated with chronicity,institutionalization, individual differences and neuroleptic medication make it difficult to interpret these results. We report on our ongoing study of soft neurologic signs and their relationship to neuroleptics and institutionalization in schizophrenia. Methods : Soft neurologic signs were examined with a standardized instrument, Neurological Evaluation Scale- Korean Version(NES-K) in 11 neuroleptic-naive patients with schizophrenia, 17 neuroleptic-treated patients and 14 chronically institutionalized patients. Results : Scores of total items(p<0.05), sensory integration(p<0.05), sequencing of complex motor acts(p<0.05) and others(p<0.01) functional areas of NES-K were significantly different among three groups. There was no difference in the area of motor coordination. Posthoc analysis showed that scores of total items(p<0.005) and sensory integration areas(p<0.01) of NES-K were significantly higher in the institutionalized patients than those of neurolepticnaive group. However scores of sequencing of complex motor act and others categories were not different in the institutionalized and neuroleptic-naive patients. Conclusion : These findings suggested that neuroleptic treatment or chronic institutionalization might partially affect soft neurologic signs, especially sensory integration area, in patients with schizophrenia. However, the soft neurologic signs of motor coordination area could be a biological trait marker of schizophrenia independent of confounding variables.

十二變에 대한 考察 : 六元正紀大論을 중심으로

채영진,남호현,이석모,여성원,한성규,이재원,안민식,정헌영,금경수 한국전통의학연구소 2003 한국전통의학지 Vol.13 No.1

The six kinds of natural factors(It refers to wind, cold, summer-heat, dampness, dryness and fire.) is constantly moving to maintain the balance of whole climate of one year. Four seasons are the largest mediation of whole climate of one year. The cold and the heat have the relationship of mutual intervention. The dampness and the dryness have it also. In this process they raise various climate appearance. And that various climate appearance influence the whole lives on the earth. This paper is concerned with the classification of them.

우울증의 인지행동치료

채정호 한국의학사 1998 診斷과治療 Vol.18 No.12

기분장애를 주소로 내원한 Binswanger씨 병 1례

채정호,전태연,윤수정,최성빈,김대진,김광수 대한생물치료정신의학회 2000 생물치료정신의학 Vol.6 No.1

We report a 70 year-old man with Binswanger's disease associated with mood symptoms. He was apparently well until 15 years ago when the treatment-resistant atypical mood symptoms had been appeared. He showed a fluctuating course in mental disturbance, such as irritable and labile affect, emotional incontinence, and irritable behavior. Two years ago, he was diagnose as hypertension, renal failure, and heart failure. He was admitted to psychiatric ward due to irritable mood, dysarthria, lack of bladder control, gait disturbance, and impulsive behaviors, which had been aggravated during the last 2 months. In physical examination, he had hypertension and both pretibial pitting edema was revealed, and also in neurological examination, exaggeration of deep tendon reflexes and weakness of extremities were found. On mental status examination, he showed irritable and labile mood with mild cognitive disturbances. Brain MRI demonstrated multifocal high signal intensity in periventricular white matter, both basal ganglia, and thalami on the T2 imaging. These findings were compatible with Binswanger's disease with mood symptoms.

운동부하 방법의 차이가 혈당 및 혈중 젖산 농도의 변화에 미치는 영향

채정룡,이갑철,김형준,박정호 군산대학교 체육과학연구소 2000 體育科學硏究所 論文集 Vol.2 No.-

Effect of sub-maximal exercise load differences onthe change of blood glucose and lactate contents were investigated. The results were as follows: 1. Blood glucose is quite relative under exercise load intensity (THR 70%, 90%) right after exercise and at the stage of relaxation. 2. Blood lactate contents were the most immediately after the exercise. 3. Under exercise load (THR 90%), Blood glucose and lactate are less related with each other before and after the exercise; on the other hand, in a restoring stage the result was reverse. Therefore; the higher the exercise intensity is, the more blood lactate is comcentrated immediately after exercise and it talkes a lot longer to go back to the stage of before exercise: the research revealed.

알쯔하이머 치매·혈관성 치매·아밀로이드·면역·IL-1β·TNF-α, Alzheimer's discase·Vascular dementia·Amyloid·Immunity·IL-1β·Tnf-α.

채정호,백인호 대한신경정신의학회 1999 신경정신의학 Vol.38 No.1

연구목적 : 알쯔하이머 치매의 병인론에 면역성 기전이 개입된다는 가설을 확인하고자 본 연구를 행하였다. 방 법 : 알쯔하이머 치매 19명, 혈관성 치매 22명, 정상노인 19명에서 말초 혈액 단핵세포를 분리하여 phyohemagglutinin-P(PHA-P) 및 1-40의 β-아밀로이드(Aβ)로 자극하여 세포 증식 정도를 비교하였으며, 배양 상청액에서 interleukin-1β(IL-1β)와 tumor necrosis factor-α(TNF-α)를 효소결합면역흡착분석법으로 측정하였다. 결 과 : 1) PHA-P 자극에 의한 단핵 세포의 증식은 세 군에서 차이가 없었다. 2) Aβ 자극은 단핵세포의 증식에 현저한 영향이 없었으나, 알쯔하이머 치매군이 혈관성 치매군과 대조군에 비하여 유의하게 많이 증식되었다. 3) 배양한 단핵세포 알쯔하이머 치매상청액의 IL-1β는 혈관성 치매군이 가장 높았으며, Aβ자극 후에도 혈관성 치매군에서 가장 높았으나 자극 전후를 비교할 때, 알쯔하이머 치매군에서 가장 현저하게 자극 후 IL-1β 생성이 증가되었다. 4) 배양한 단핵세포 상청액의 TNF-α는 알쯔하이머 치매군이 대조군보다 유의하게 높았으며, Aβ 자극 후에도 알쯔하이머 치매군이 대조군보다 유의하게 높았다. 결 론 : 이상의 실험을 통하여 알쯔하이머 치매군의 말초 혈액 단핵세포가 Aβ 자극에 따라 나타내는 과도한 면역 반응을 관찰하였다. 이는 알쯔하이머 치매의 병태생리에서 Aβ침착에 따른 면역성 반응이 중요한 역할을 한다는 것을 시사한다. Objectives : Deposition of the β-amyloid(Aβ) peptide in the senile plaque has been thought as a major etiologic factor for the development of Alzheimer's disease. Among the hypotheses suggested to explain the mechanism by which Aβ causes Alzheimer's disease, the immune processes have been considered as crucial events in the pathophysiology of the Alzheimer's disease. This study examined the effects of Aβ on the proliferation and production of IL-1β(interleukin-1β) and TNF-α(tumor necrosis factor-α) in peripheral blood mononuclear cells isolated from the patients with Alzheimer's disease, vascular dementia, and normal elderly control subjects. Method : Nineteen patient with Alzheimer's disease, 22 patients with vascular dementia, and 19 controls were participated in this study. Peripheral blood mononuclear cells were obtained from each donors, and subjected to the proliferation assays in response to the stimulation of phytohemagglutinin-P(PHA-P) and Aβ. The levels of IL-1β and TNF-α from the culture supernatant of the cells before and after the stimulation of Aβ were also determined by enzyme linked immunosorbent assay. Results : The results were as follows : 1) The proliferation of mononuclear cells in response to PHA-P were not different among three groups. 2) When compared to PHA-P, the proliferation responses of mononuclear cells to Aβ were insignificant in all experimental groups. However Alzheimer's disease group showed greater stimulation index than vascular dementia and controls. 3) IL-1β production was higher in the vascular dementia group than Alzheimer's disease and control groups both before and after the stimulation of Aβ. However the stimulation ratio of before and after Aβ stimulation was highest in Alzheimer's disease group. 4) TNF-α production was higher in Alzheimer's disease group than controls both before and after the stimulation of Aβ. Conclusion : These finding suggest that the immune responses to the stimulation of Aβ may be enhanced in patients with Alzheimer's disease compared to vascular dementia and control groups, supporting the immune hypothesis for th epathophysiology of Alzheimer's disease.

얼굴 인식의 발달학적 관점

채정호,양대현,이경욱,박원명 한국의학사 2004 診斷과治療 Vol.24 No.2