Clinical Experiences and Usefulness of Cervical Posterior Stabilization with Polyaxial Screw-Rod System

Hwang, In-Chang,Kang, Dong-Ho,Han, Jong-Woo,Park, In-Sung,Lee, Chul-Hee,Park, Sun-Young The Korean Neurosurgical Society 2007 Journal of Korean neurosurgical society Vol.42 No.4

Objective : The objective of this study is to investigate the safety, surgical efficacy, and advantages of a polyaxial screw-rod system for posterior occipitocervicothoracic arthrodesis. Methods : Charts and radiographs of 32 patients who underwent posterior cervical fixation between October 2004 and February 2006 were retrospectively reviewed. Posterior cervical polyaxial screw-rod fixation was applied on the cervical spine and/or upper thoracic spine. The surgical indication was fracture or dislocation in 18, C1-2 ligamentous injury with trauma in 5, atlantoaxial instability by rheumatoid arthritis (RA) or diffuse idiopathic skeletal hyperostosis (DISH) in 4, cervical spondylosis with myelopathy in 4, and spinal metastatic tumor in 1. The patients were followed up and evaluated based on their clinical status and radiographs at 1, 3, 6 months and 1 year after surgery. Results : A total of 189 screws were implanted in 32 patients. Fixation was carried out over an average of 3.3 spinal segment (range, 2 to 7). The mean follow-up interval was 20.2 months. This system allowed for screw placement in the occiput, C1 lateral mass, C2 pars, C3-7 lateral masses, as well as the lower cervical and upper thoracic pedicles. Satisfactory bony fusion and reduction were achieved and confirmed in postoperative flexion-extension lateral radiographs and computed tomography (CT) scans in all cases. Revision surgery was required in two cases due to deep wound infection. One case needed a skin graft due to necrotic change. There was one case of kyphotic change due to adjacent segmental degeneration. There were no other complications, such as cord or vertebral artery injury, cerebrospinal fluid leak, screw malposition or back-out, or implant failure, and there were no cases of postoperative radiculopathy due to foraminal stenosis. Conclusion : Posterior cervical stabilization with a polyaxial screw-rod system is a safe and reliable technique that appears to offer several advantages over existing methods. Further biomechanical testings and clinical experiences are needed in order to determine the true benefits of this procedure.

만성 신부전증 환자의 중증 고혈당에 따른 의식변화 결핍에 대한 연구

박은주,강성귀,한상웅,김호중,이창범,임천규,박성광,윤경택,위형중,안유헌 대한신장학회 2000 Kidney Research and Clinical Practice Vol.19 No.6

In diabetic patients who were being treated with hemodialysis, coma and other neurological deficits did not occur in spite of extremely elevated serum glucose levels. In this report, we compared diabetic patients with renal failure in severe hyperglycemia with nonketotic hyperosmolar coma patients with normal renal function to know what affect mental changes. Mental changes were not present in diabetic patients with renal failure. These patients with renal failure showed more severe hyperglycemia, but corrected serum sodium concentration and calculated effective serum osmolality were low. So it is suggested that corrected serum sodium concentration and effective serum osmolality are more important factor affecting mental changes than high blood glucose levels in diabetic patients with renal failure, due to absence of osmotic diuresis.

농업부문 에너지 수급 구조와 전망

김연중(Yun-Jung Kim),박기환(Ki-Hwan Park),강창용(Chang-Yong Kang),김윤형(Yun-Hyung Kim),김한호(Han-Ho Kim),오세익 한국농촌경제연구원 2010 한국농촌경제연구원 기본연구보고서 Vol.- No.-

According to economic development and changes in internal and external economic conditions, the energy consumption structure and consumption by energy source of our country are largely changing. Nevertheless, South Korea depends on imports for most of its energy, because natural energy resources are insufficient, and is very sensitive to energy-related issues. Recently, because the International Convention on Climate Change raised concern about diminishing fossil fuels and global warming, the importance of energy efficiency is increasing. To understand the energy input structure of the agricultural sector in order to prepare for efficient energy management plans, it is necessary to predict energy consumption by main items. For this, input-outpur analysis was conducted. It was found that our agriculture and forestry and fisheries industry consumed 3.79 million tons oil equivalent(toe) in 2007, and the agriculture sector is expanding; on the other hand, the livestock and forestry and fisheries sectors are generally shrinking. The agriculture sector remarkably uses energy for vegetables and flowering plants, and in the case of vegetables, consumption has increased by more than 9%, and even consumption of flowering plants has increased by more than 11% above the annual average. In addition, the energy input coefficient in the agriculture sector decreased by more than 30% compared with 1995, confirming that, in general, dependence on energy is being avoided. The agriculture sector is an industry dependent on energy as a result of the relatively large input coefficient in horticulture. Meanwhile, domestic new renewable energy use in our country is just 2.43% of total consumption of the first energy but has shown a tendency to swiftly increase the supply rate of new renewable energy since 2000; however, consumption in the agriculture sector is mainly oil related compared with other industries, and the consumption of new renewable energy is almost nothing. Nevertheless, the government established a goal of expanding the supply rate level of new renewable energy to 4.3% in 2015, 6.1% in 2020, and 11% in 2030, so the use of new renewable energy is expected to increase even in the agriculture sector in the future. Energy is the most important resource for the entire range of the national economy, and because of the effect of oil price increases, it has become a major interest of agriculture. Therefore, the government is preparing various policies for the efficient use of energy as well as energy saving. Accordingly, it is important to plan energy-related efficient policy by supplying basic data on energy policy establishment in the agriculture sector by analyzing the supply and demand status of clean energy in the agriculture sector along with the potential energy demand of the main agricultural and livestock products.

정신분열병에 대한 리스페리돈의 효과 및 안정성

이민수,김용구,김영훈,연병길,오병훈,윤도준,윤진상,이철,정희연,강병조,김광수,김동언,김명정,김상훈,김희철,나철,노승호,민경준,박기창,박두병,백기청,백인호,손봉기,손진욱,양병환,양창국,우행원,이정호,이종범,이홍식,임기영,전태연,정영조,정영철,정인과,정인원,지익성,채정호,한상익,한선호,한진희,서광윤 大韓神經精神醫學會 1998 신경정신의학 Vol.37 No.1

연구목적 : 본 시험의 목적은 임상시험 시작전에 연구자들을 대상으로 PANSS Workshop을 통하여 PANSS, ESRS에 대한 국내에서의 표준화 작업을 구축하고 새로운 정신병 치료제인 리스페리돈의 효과와 안정성을 재확인하여 리스페리돈 사용에 대한 적정화를 이루는데 있다. 연구방법 : 1996년 4월부터 1996년 9월까지 국내 39개 대학병원 정신과에 입원중인 혹은 증상이 악화되어 입원하는 정신분열병 환자 377명을 대상으로 다시설 개방 연구를 시행하였다. 1주일간의 약물 배설기간을 가진후, 리스페리돈을 8주간 투여하였고, 기준점, 1주, 2주, 4주, 그리고 8주후에 평가되었다. 용량은 제1일에는 리스페리돈 1mg씩 1일 2회, 제2일에는 2mg씩 1일 2회, 제3∼7일에는 3mg씩 1일 2회 투여하였다. 이후 환자의 임상상태에 따라 임의로 증량할 수 있으며, 최대 일일 16mg을 초과하지 않도록 하였다. 추체외로 증상을 조절하기 위한 투약을 허용하였다. 임상증상 및 부작용의 평가는 PANSS(Positive and Negative Syndrome Scale), CGI(Clinical Global Impression) 그리고 ESRS(Extrapyramidal Symptom Rating Scale)을 사용하였다. 연구결과 : 377명중 343명(91%)이 8주간의 연구를 완결하였다. 치료 종결시점인 8주후 PANSS 총점수가 20% 이상 호전된 경우를 약물 반응군으로 정의할때, 약물반응군은 81.3%였다. 리스페리돈에 반응하는 예측인자로는 발병연령, 이전의 입원 횟수, 유병기간이 관련 있었다. 리스페리돈은 1주후부터 PANSS양성, 음성, 및 일반정신병리 점수상에 유의한 호전을 보여 효과가 빨랐다. CGI의 경우도 기준점에 비해 1주후부터 유의한 감소를 나타내었다. ESRS의 경우, 파킨슨 평가점수는 기준점과 비교해 투여 1주, 2주, 4주후 유의하게 증가되었다가 8주후 기준점과 차이가 없었다. Dystonia 평가점수는 1주후만 유의한 증가를 보였으며, dyskinesia 평가점수는 유의한 차이가 없었다. 혈압, 맥박수의 생명징후 및 일반 혈액학 검사, 생화학적 검사, 심전도 검사에서 유의한 변화는 없었다. 결 론 : 이상의 다시설 개방 임상 연구를 통해 리스페리돈은 정신분열병 환자에서 양성증상뿐만 아니라 음성증상 및 전반적인 증상에도 효과적인 것으로 사료된다. 보다 명확한 평가를 위해서는 다른 항정신병약물과의 이중맹검 연구가 필요할 것으로 생각되며, 또한 장기적 치료에 대한 평가도 함께 이루어져야 하겠다. Objective : The purpose of this study was to investigate the efficacy and safety of risperidone in the treatment of Korean schizophrenic patients. Method : This multicenter open study included 377 schizophrenic patients drawn from 39 university hospitals. After a wash-out period of 1 week, the schizophrenic patients were treated with risperidone for 8 weeks and evaluated at 5 points ; at baseline, and 1, 2, 4 and 8 weeks of treatment. The dose was increased from 2mg/day(1mg twice daily) to 6mg/day(3mg twice daily) during the first week and adjusted to a maximum of 16mg/day over the next 7 weeks according to the patient's clinical response. Medication to control extrapyramidal symptoms was permitted. The psychiatric and neurological status of the patients was assessed by PANSS, CGI, and ESRS scales. Results : 343(91%) of 377 patients completed the 8-week trial period. Clinical improvement, as defined by a 20% or more reduction in total PANSS score at end point, was shown by 81.3% of patients. The predictors of response to risperidone were associated older age, shorter duration of illness, fewer previous hospitalization. Risperidone had rapid onset of action ; a significant decrease of the total PANSS and three PANSS factor(positive, negative, general), and CGI was already noticed at the end of first week. For the ESRS, parkinsonism rating scores were significantly increased until week 4 comparing with baseline. Dystonia rating scores were significantly increased until week 1, and dyskinesia rating scores were not significantly changed during the study. Laboratory parameters including vital sign, EKG, hematological, and biochemical values showed no significant changes during the trial. Conclusions : This study suggests that risperidone is generally safe and effective against both the positive and negative symptoms in our group of patients.

PET/CT 검사에서 환자체형에 따른 적정검사 프로토콜에 관한 고찰

조석원,함준철,강천구,반영각,이승재,임한상,이창호,박훈희,Cho, Seok Won,Ham, Joon-Chul,Kang, Chun Goo,Bahn, Young Kag,Lee, Seung Jae,Lim, Han Sang,Lee, Chang-Ho,Park, Hoon-Hee 대한핵의학기술학회 2013 핵의학 기술 Vol.17 No.2

Purpose: Whole-body PET using radiopharmaceutical is one of the imaging study methods for physiological changes of body. High specificity of the PET-CT examination is used to detect an early stages of cancer and metastatic cancer by imaging a physiological changes. During the imaging process, PET image has been characterized by a relatively low image quality due to its low sensitivity and the acquisition of random and scatter coincidences as well as patients figure. Therefore, the image quality as the changes of the acquisition times of patient weight was evaluated in this study. Materials and Methods: Thirty patients who presented to our hospital were enrolled. They were divided to normal, overweight, and obese group using BMI index, respectively. The patients with a liver disease and diabetes were excluded. $^{18}F-FDG$ was administered to the patients as 5.2 MBq per kg. After an hour from an injection, image acquisition was obtained as List mode in a part of liver in 1 bed. SNR (signal-to-noise ratio) of each groups acquisition times were confirmed from the calculated radiation counts and random fractions. The statistical significance of three groups was confirmed through one-way ANOVA test. On the basis of the counts of 2 minutes on normal group, the SNR of overweight group and obese group were compared. Results: The SNR were increased with loger aquisition time in 3 groups. In the condition of same acquisition time, the SNR had a statistical significance (P<0.05). The SNR were decreased to the normal, overweight, and obese, respectively. Liver activity had no significance difference on each group and RF had the significance differences (P<0.05). On the basis of the counts of 2 minutes on normal group, there were no statistical significance in a three minute acquisitions of overweight group and two minute acquisitions of obese group (P=0.150). Conclusion: In this study, the administrated amount of radiation dose did not adjust as the change of the patients weight. Increasing the acquisition time when the administration of the same amount of dose was able to get a good result of SNR. When the Based 2 minute on normal group, if overweight and obese case the increased acquisition time of 3 minute was able to obtain a similar SNR. On the basis of the normal group, the acquisition times of overweight and obese group were increased to 3 minutes per bed and the SNR were similar to the normal group.

Nitric Oxide에 의한 난소 과립세포의 Apoptosis 조절에 대한 연구

강한승,이석자,김외리,이채관,신창숙,김성태,강성구 인제대학교기초과학연구소 1998 자연과학 Vol.2 No.-

여포의 퇴화가 진행되는 기작에서 apoptotic cell death 와 nitric oxide (NO)의 연관성에 관하여 실험하였다. 난소의 apoptosis는 GnRH에 의해 유도되고 스테로이드에 의해 억제된다. 여포에서 과립 세포의 apoptosis에 대한 호르몬의 영향과 NO 생산효과를 조사하기 위하여 중간크기 (직경 5-6 ㎜)의 여포에서 non-apoptotic 과립세포를 분리하여 스테로이드, GnRH agonist, GNRH agonist+SNP, 그리고 NO 공여체인 SNP를 처리하여 24시간동안 배양하였다. 배양된 과립세포에서 게놈 DNA를 추출하여 apoptotic DNA절편화 경향을 알아보았고, 배양액과 griess reagent를 반응시켜 nitrite 농도를 측정하였다. 스테로이드 호르몬을 처리하였을 때, 대조군에 비해 NO 생성이 다소 증가하였으며 apoptotic DNA 절편화도 억제되었다. GnRH agonist 처리군에서는 apoptotic DNA 절편화가 가속화 양상을 나타내었으며 NO 생성은 다소 감소하였다. 그러나 GnRH agonist+SNP 그리고 SNP 처리군에서는 apoptotic DNA 퇴화가 억제되었으며 NO 농도는 대조군에 비해 현저히 높았다. 위의 실험 결과로 보아 과립세포 분화와 여포성숙과 퇴화과정에서 호르몬과 NO가 밀접한 관련이 있는 것으로 사료된다. To study the regulation of porcine follicular cell apoptosis by steroids, GnRH agonist and nitric oxide, we have analyzed DNA fragmentation, the hallmark of apoptosis, and nitrite production in porcine granulosa cells. In, ovarian apoptosis is induced by GnRH but is prevented by steroids. Apoptosis is confined to the granulosa cells but it was not clear whether apoptosis of granulosa cell was regulated by NO in vitro. So non-apoptotic granulosa cells isolated, grown at 37℃, for 24 hrs, and treated with / without SNP, GnRH agonist, and sterioid, respectively. In cultured granulosa cells were used to extract genomic DNA and culture media was assayed for nitrite concentration. Nitrite production of culture media was increased and apoptotic DNA fragmentation was supressed in SNP treated groups, GnRH agonist+SNP, and estrogen, progesterone. Nitrite concentration in culture media was decreased and apoptotic DNA was induced treated with GnRH agonist. These data suggest that NO production and apoptosis may be involved of granulosa cell differentiation and ovarian follicular atresia by SNP, estrogen and progesterone. Moreover, NO can overcome the granulosa cell apoptosis induced by GnRH agonist.

원시적 지속성 삼차신경동맥 동맥류 : 증례보고 A Case Report

강현승,한대희,권오기,오창완,정희원,최길수 대한신경외과학회 1997 Journal of Korean neurosurgical society Vol.26 No.5

저온환경이 백서의 신장기능과 심방이뇨호르몬 농도에 미치는 영향

한상헌,조경우,강창원,김선희,김향 대한내분비학회 1993 Endocrinology and metabolism Vol.8 No.2

It has been known that chronic cold exposure resulted inn a sustained increase in blood pressure in rats. The mechanism reponsible for the cold-induced hypertension is still unknown. It is the purpose of the present experiments to explore the renal and hormonal effects of chronic cold exposure in rats. Chronic cold exposure for 2 weeks from 25℃ to 4℃ resulted in increases in urin vlume, UNaV, UKV and positive water balance. Chromic cold exposure also increased urinary excretion of creatinine. Chronic cold exposure(25℃ to 4℃) decreased plasma renin activity and increased plasma level of atrial natriuretic peptide. However, ANP mRNA content of atrium did not change. These data suggest that the plasma levels of atrial natriuretic peptide as well as renin activity are involved in the regulation of body fluid and electrolytes metabolism in chronic cold exposed rats. (J Kor Soc Endocrinol 8:134~140, 1993)

파트너십에 의한 옥상녹화조성 사례연구 : 부산광역시 서구를 사례로

강훈,한창석,김승환 東亞大學校 建設技術硏究所 2007 硏究論文集 Vol.31 No.1

The study aims at suggesting a new model of rooftop greening by the partnership. For this purpose, this study was applied in the rooftop of Amnam Park Office and investigated application process of planning, design and construction under rooftop greening system by the partnership. We have also examined the validity of the system and the roles and effects of the partnership. The study was proceeded as follows ; First, it was described the purpose and method of the study. Second, it was considered on the concept, trend, type of rooftop greening with research paper. Third, it was designated the rooftop of Amnam Park Office as the best place in order to apply in rooftop greening, and then suggested a new model of the rooftop greening was planned, designed and constructed as the application of the rooftop greening by the partnership. Finally, it was estimated the rooftop greening model as designed by the partnership.

중합효소연쇄반응(Polymerase Chain Reaction)을 이용한 Fusobacterium nucleatum 및 Fusobacterium necrophorum의 동정에 관한 연구

강창우,박동성,윤수한 大韓齒科保存學會 1999 Restorative Dentistry & Endodontics Vol.24 No.1