• Molecules and Cells
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• 제23권2호
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• pp.145-153
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• 2007

Elucidation of the roles of circadian associated factors requires a better understanding of the molecular mechanisms of circadian rhythms, control of flowering time through photoperiodic pathways, and photosensory signal transduction. In Arabidopsis, the APRR1 quintet, APRRs 1, 3, 5, 7, and 9, are known as central oscillator genes. Other plants may share the molecular mechanism underlying the circadian rhythm. To identify and characterize these circadian response genes in Brassica crops whose genome was triplicated after divergence from Arabidopsis, we identified B. rapa BAC clones containing these genes by BLAST analysis of B. rapa BAC end sequences against the five corresponding Arabidopsis regions. Subsequent fingerprinting, Southern hybridization, and PCR allowed identification of five BAC clones, one for each of the five circadian-related genes. By draft shotgun sequencing of the BAC clones, we identified the complete gene sequences and cloned the five expressed B. rapa circadian-associated gene members, BrPRRs 1, 3, 5, 7, and 9. Phylogenetic analysis revealed that each BrPRR was orthologous to the corresponding APRR at the sequence level. Northern hybridization revealed that the five genes were transcribed at distinct points in the 24 hour period, and Southern hybridization revealed that they are present in 2, 1, 2, 2, and 1 copies, respectively in the B. rapa genome, which was triplicated and then diploidized during the last 15 million years.

• 대한한의학원전학회지
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• 제13권1호
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• pp.184-232
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• 2000

The trend of the concept for modern medicine is gradually forwarding to preventive medicine from therapeutic medical science. One of the most remarkable characteristics of oriental medicine is that it attaches greater importance to preventive medicine scientifically. The basic theory of oriental medicine principally takes roots in Huang Di Nei Jing and it is Si Qi Tian Shen Da Lun that is deep-rooted in the principle of "growing life" grounded in theory of unity of heaven and man of oriental medicine. Therefore having translated annotation of 〈Si Qi Tian Shen Da Lun·Huang Di Nei Jing Su Wen〉 which is quoted frequently and using it for appendix and comparing each views of annotators, I would like to state the results of dissertation as below. 1. Si Qi Tian Shen of title of the paper means that it keeps our health and prevent diseases in advance to control our mind and rhythm of life to the change of Yin and Yang - that is, the grower Yin, the looser Yang - following four seasons of nature environment. 2. The summary of this dissertation is that spring means things newly sprout from old ones, things become profuse, beautiful and brilliant in the summer. Autumn stands for things is harvested and allocated evenly and finally things is closed and stored. That is, in the spring and summer. If one break this principle of growth, diseases are followed after this. Therefore an excellent physician should handle diseases before they are attacked not remedy them after outbreak of diseases. It is said that a sage governs the nation before it is put into confusion. 3. These four terms standing for each season describe definitely and realistically rural life in the agricultural environment, in other words, spouting in spring, growing in summer, harvesting in autumn, storing in winter. Going with the current of the times, they have developed to theoretical concept of getting, growth, harvest, store so that implied the principle of growth for four seasons. 4. It means in a concrete way "Yang would grow in the spring and summer and Yin would grow in autumn and winter" as follow. That is, when the day is long, things act energetically and emit the warmth of life and expand the vigor of growth. On the other hand, when the night is long, things lessen their activity to protect the warmth of life and to preserve the sprit of growth. In addition, we should be concerned about the work outward and try to concretely fulfill plan of business in spring and summer. It is in autumn and winter when we should grow Yin. It does not mean that we simply grow cold yin in our body to build Yin. But according to annotators, for example, Wang Bing stated that we need to make things be cool in spring and summer, and be warm in autumn and winter for improvement. Zhang Jie Bin noted that things should not be cold in spring and summer and not be too hot to improve in autumn and winter. Those principles theorized to unify physiological status into the principle of changing of Yang and Yin in the nature and enriched the contents. In these principles, no problems are not found logically somewhat.

• 대한한의학회지
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• 제42권4호
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• pp.164-175
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• 2021

Objectives: The LI11 (Quchi) acupuncture point has always been included in the Seven acupoints for stroke; however, additional LI11 acupuncture research is needed. In this study, the effect of LI11 acupuncture on cerebral blood flow of the anterior cerebral arteries (ACA) and middle cerebral arteries (MCA) was investigated. Method: This study included 10 healthy young male subjects. Cerebral blood flow velocity and cerebrovascular reactivity were measured using transcranial Doppler sonography. Changes in hyperventilation-induced carbon dioxide (CO₂) reactivity and modified ACA and MCA blood flow velocity at 40 mmHg (CV40), blood pressure, and heart rate were observed before and after LI11 acupuncture treatment. Results: A statistically significant increase in contralateral anterior cerebral artery CO₂ reactivity (p=0.036) and decrease in contralateral middle cerebral artery CV40 (p=0.047) were observed. No significant difference in mean blood pressure was shown. A statistically significant increase in heart rate occurred after LI11 acupuncture; however, it was not clinically significant as there were negligible changes in the heart rhythm. Conclusions: LI11 acupuncture treatment could improve cerebral blood flow velocity. These results might be explained by regulating endothelium-dependent vessel dilation in the anterior cerebral artery region. Trial registration: This trial has been registered with Clinical Research Information Service, a service of the Korea Centers for Disease Control and Prevention: KCT0004494 (retrospectively registered). https://cris.nih.go.kr/cris/search/search_result_st01.jsp?seq=15359

• 한국응용곤충학회지
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• 제61권1호
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• pp.109-115
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• 2022

난황형성과정(Vitellogenesis)은 발달하는 난모세포에 난황이 축적되는 과정으로, 이 과정의 개시는 알형성과정(oogenesis)을 제어하는 주요 메커니즘이다. 곤충생리학 모델인 노랑초파리(Drosophila melanogaster)에서 난황형성과정은 성충으로 우화한 직후 시작하여 성적 성숙이 일어나는 2-3일간 지속된다. 성숙한 난모세포가 충분히 만들어지고 성적 성숙이 종료되면, 짝짓기 후 알형성과정이 다시 시작될 때까지 난황형성과정은 멈춘다. 수컷 초파리의 정액 단백질인 성 펩타이드(Sex peptide, SP)는 짝짓기의 신호로서 알라타체(corpora allata)를 자극해 유약호르몬(Juvenile hormone, JH) 생합성 및 분비를 유도하며, 혈림프(hemolymph) JH 농도의 증가는 난황형성과정을 자극한다. 최근 연구 결과에 따르면, SP수용체 뉴런은 자궁 내막의 수상돌기를 통해 교미 중 정액과 함께 자궁으로 전달된 SP를 감지함으로써, 축삭돌기를 통해 중추신경계인 복부 신경절에 짝짓기 신호를 보내는데, 이러한 중추신경계 SP 신호가 JH 생합성 및 분비, 그리고 난황형성과정을 유도하는 것으로 밝혀졌다. 짝짓기 후 암컷에서의 난황형성과정은 일주기 리듬을 보이는데, 노랑초파리의 일주기 리듬은 중추 신경계 뉴런들에 의해 제어된다. 본 종설은 성적 성숙, 짝짓기 신호, 그리고 일주기 리듬에 따라 난황형성과정을 제어하는 신경 메커니즘에 관한 최근 연구 성과를 다룬다.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제27권5호
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• pp.385-396
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• 2001

The purpose of this experiment was to examine the histological changes and the pattern of expression of proliferating cell nuclear antigen(PCNA) and type I collagen in the elongated bone affected by osteodistraction of the mandibular body in an adult canine model. Seven adult male mongrel dogs weighing over 20kg were used for this experiment. The author excluded 3 animals because they died before the planned time of sacrifice. The custom-made linear extraoral device and 4 bicortical fixation screws 2.3mm in diameter, 50mm in total length, 15mm in screw length were used in each animal. The distal part of the distractor produced a 0.75mm gap between proximal and distal bony segments every $360^{\circ}$ turn of the rotation rod of the device. The mandibular body of the right side from each animal was experimental side and the left side was left intact and served as control. At the experimental side, the mandibular body was osteotomized. After 5-day latency period, the segments were distracted with a rate of 1.1mm/day and a rhythm of two/day for ensuing 7 days. The animals were sacrificed at the 4th. 17th, and 32th day after the end of the distraction. The bony specimens were decalcified, embedded in paraffin, sectioned $5{\mu}m$ thick and stained with Masson trichrome and examined under the light microscope. The immunohistochemical examinations using anti-PCNA antibody and anti-type-I collagen antibody were performed to examine the pattern of the expression of PCNA and type I collagen, respectively. Results : 1. The mean increment of the distance between the proximal and distal screw-holding parts of the distractor was 6.8mm. The average elongation of the mandible in the experimental side was 5.3mm. The loss of elongation was 1.5mm in average. 2. New bone was already observed at the 4th. day after the end of distraction. But, bony union was not completed in the distraction gap at the 32th. day after the end of distraction by radiographic and microscopic examinations. 3. The expression rate of PCNA positive cells in the distraction gap had a tendency of decrease from 35.1-68.8% initially, to 49.1%, and finally to 17.6-27.2%. But at the final period, the tissue of the elongated gap still had the ability of cell proliferation. On the other hand, the expression of PCNA positive cells in the control side were negligible through the experimental period. 4. PCNA positive cells were observed primarily both at the central fibrous zone and at the region of just adjacent to CFZ which initiated new bone formation. 5. The expression pattern of the type I collagen was not zone-specific. They were observed diffusely throughout the elongation gap. 6. The predominant mechanism of new bone formation in the distraction gap was intramembranous. But, some of the regenerated bone was formed by endochondral ossification.

• 대한간호학회지
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• 제5권1호
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• pp.112-132
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• 1975

When Korean family planning services began as a part of the National Policy in 1962, the annual population growth was 3.0%. This growth rate has been decreased to 2.0% during last ten year period. And it seems imperative that all hospitals, as well as related organizations, should participate in family planning in order to contribute to achieving the National goal of 1.5% population growth by 1976, the end of the Third Five Year Economic Development Plan. Nurses should be considered the most important human resources in charge of the core of family planning services in any setting. For the family planning services in the general hospital setting, nurses as a core members contribute much as change agent, motivators, counsellors, educators etc. A nurse can work with patients and their relatives when she is equipped with relevant knowledge and skills. Fur the more family planning cannot be ignored even in hospital setting where more comprehensive nursing care is needed Thus, the general objective of this study is to provide baseline data for better programming of In-service education in family planning so that effective hospital family planning nursing services can be made a part of comprehensive nursing care contributing to the national population program and human welfare. In order to meet the general objective, this study has the following specific objectives : 1. To find out the general characteristics of the clinical nurses working in Y Hospital 2. To evaluate their attitudes and practices of family planning 3. To assess their knowledge, attitudes and practices of population and family planning as professional nurses. 4. To examine and compare data collecting methods for the planning of an In-service Educational Program 5. To explore the contents to be included in this In-service Education Program. The study population randomly selected one hundred nurses working in Y Hospital A cross-sectional survey with questionnaires developed for this study was chosen for the study method. To collect reliable data, the questionnaires were distributed to and answered by the study population in a controlled situation. X²test and t-test was employed in analyzing the data. The findings of this study are as follows: 1. Y Hospital nurses had a lower ideal number of children (X=2.02) and showed no strong preference for male children, and 74% of them expressed the desire to use permanent methods of birth control 2. of this thirty Y Hospital nurses who were married 66.7% stated they were already practicing contraceptive methods. Most of them preferred male methods of contraception. 3. According to objective evaluation about knowledge of various aspects of population and family planning, respondents from collegiate programs significantly knew better the subjects on the average than did respondents from diploma programs of nursing. 4. There was a marked difference in the results of self-evaluation and objective evaluation in their family planning knowledge. It was found that the self-evaluation family planning knowledge seemed to be unreliable. Accordingly, the objective test methods appeared to be more reliable in the evaluation of knowledge levels. 5. The subject areas needed to be included in In-service education for the Hospital family planning services in Y Hospital are 1) rhythm methods, 2) tubal-legation, 3) family planning effects of contraceptives, 4) population growth, 5) demographic traction, 6) population structure and 7) infant mortality facts. In addition, 1) various oral contraceptives, 2) basal temperature method, 3) laparoscopic female sterilization, 4) interfering factors of family planning, 5) anatomy and physiology of the female reproductive organs were additional areas to be taught to respondents from 3-year diploma schools of nursing. Demographic transition was one subject area in which the four-year graduates need further study. 6. Population problems guidance and counselling in family planning instruction in the theory and practice of contraceptives should be included in future In-service Education Programs in order to provide more effective hospital Family Planning Services, stated 77.0% of the respondents.

• 한국의학물리학회지:의학물리
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• 제21권2호
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• pp.209-217
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• 2010

색소성망막염(retinitis pigmentosa: RP)이나 연령관련 황반변성(age-related macular degeneration: AMD)과 같은 망막질환으로 인해 실명한 환자를 위해 인공시각장치가 개발되고 있다. 인공시각장치의 동작원리는 전기자극을 주어 신경세포의 활동도를 조절하는 것이므로 시각정보를 제대로 인코딩하기 위해 최적의 전기자극을 인가하는 것은 인공시각장치의 실용화를 위해 매우 중요한 요소이다. 그러므로 본 연구에서는 전압자극의 크기와 자극시간을 변화시켜 가면서 정상망막과 변성망막에 인가한 후 자극에 의해 유발된 망막신경절세포 반응을 분석하고 역치전하밀도를 비교함으로써 최적의 전기자극 조건을 찾아보고자 하였다. 이를 위하여 정상마우스와 rd1 마우스의 망막을 in vitro 상태로 분리한 후 망막의 신경절세포층이 전극을 향하여 부착되도록 한 후 망막신호를 기록하였다. rd1 마우스에서 얻은 변성망막의 망막신경절세포에서도 전압펄스를 인가시 정상망막의 망막신경절세포처럼 전압자극의 크기와 자극시간 변조에 대하여 반응하였다. 그러나 정상망막과 변성망막에서 망막신경절세포 반응의 시간적 패턴은 매우 달랐다: 정상망막의 망막신경절세포 반응은 전기자극 후 약 100 ms 내에서 1개의 피크만 나타나는 반면, 변성망막에서는 이보다 긴 400 ms 구간에서 약 10 Hz의 진동리듬을 가진 다수의 피크(~4개)들이 나타나는 것을 확인하였다. 또한 변성망막에서 망막신경절세포의 반응을 유발하기 위한 역치 전하밀도가 정상망막에서 보다 크게 상승하였다: 자극세기를 변화시켰을 때 정상망막의 역치 전하밀도는 $37.23{\sim}61.65\;{\mu}C/cm^2$, rd1 마우스에서는 $70.50{\sim}99.87\;{\mu}C/cm^2$로 2배가량 높은 것을 확인하였다. 자극시간을 변화시켰을 때 정상망막의 역치 전하밀도는 $22.69{\sim}37.57\;{\mu}C/cm^2$, rd1 마우스에서는 $120.5{\sim}170.6\;{\mu}C/cm^2$로 5배가량 높은 것을 확인하였다.

• 인간행동과 음악연구
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• 제5권1호
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• pp.67-90
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• 2008

MI란 Music and Imagery의 약자로 심리치료의 한 방법인 GIM(Guided Imagery and Music)을 현실에 맞게 축약적으로 접목시킨 방법이다. 이는 치료목표에 적합한 음악감상을 통해 다양한 심상을 경험함으로 인간의 내면세계를 탐색, 직면, 통찰, 해결하게 한다. 본 치료사례는 MI기법을 활용하여 우울한 내담자의 긍정적 내적자원에 따른 심상을 체험하고, 그 체험을 언어적으로 표현한다. 또한 그 이미지들을 일상생활에 긍정적인 변화를 적용할 수 있도록 유도하는 지지적 수준의 개인 치료사례이다. 지지적인 수준(Supportive Level)에서의 MI는 음악 안에서 안전하게 서로 지지하는 수준에서만 사용한다. 개인세션 도입은 특정 느낌이나 주제, 단어 혹은 시각적 이미지를 연상하고, 이러한 이미지는 갈등적인 내용이 아닌 긍정적인 경험을 유도한다. MI의 한 회기 별 첫 번째 단계는 초기면담(Prelude)으로 상담의 초기면담과 같이 구체적인 목표를 정한다. 두 번째 단계는 전환(Transition)으로 여러 가지 내담자의 이야기 중에 가장 지지적인 주제를 좀 더 초점화하여 구체적으로 느끼고 표현 할 수 있도록 한다. 세 번째 단계는 긴장완화 및 음악 감상(Music Listening)으로 여러 긴장이완법 등을 사용하여 음악 감상하는 동안 심상이 잘 떠오를 수 있도록 이완 시킨다. 그리고 음악 감상 동안 음악이 가져다주는 여러 가지 심상들을 탐색하고 연상 할 수 있도록 한다. 마지막 단계는 마무리(Process)시간으로 음악 감상 동안 경험되어진 심상을 그림으로 표현하고, 개인적인 심상경험을 언어적인 과정을 통해 치료사와 공유함으로써 긍정적인 경험을 확장시켜 내적인 힘을 키운다. A 내담자의 경우 내담자와의 라포 형성하기(공감, 이해, 지지), 내담자의 긍정적인 자원탐색(어린시절, 가족), 내담자의 감정표현 및 긍정적 지지(현재의 나)의 구체적인 목표를 설정하였다. 음악은 내담자가 선호하는 음악과 치료사가 선정한 음악 중에서 음의 전개가 단순하고, 멜로디가 반복적이며, 리듬이 규칙적이며, 협화음으로 구성된 안정적이고 구조화된 음악을 사용하였다. 그 결과 A는 1, 2회기에는 방어기제를 많이 사용하고 우울로 인한 감정조절의 어려움을 보였으나 3회기 이후 자신이 좋아하는 음악과 지지적인 음악을 치료사가 제공하는 것으로 인해 공감과 지지를 경험할 수 있게 되었다. 이를 통하여 4회기부터 안정감을 갖고 세션 안에서 부정적 정서를 긍정적인 정서로 전환하고, 자신의 내재된 힘을 발견하게 되었다. 6회기에는 과거 힘들었던 시간들이 앞으로 갖게 될 좋은 시간을 준비하는 단계라고 인식하기 시작하였다. B 내담자의 경우 내담자와의 라포 형성 및 탐색하기(공감, 이해, 지지), 내담자의 문제 탐색 및 긍정적 인식(어린시절, 가족), 내담자의 감정표현 및 통찰하기(현재와 미래의 나)의 구체적인 목표를 설정하였다. 음악은 1, 2회기에는 안정적이고 구조적인 음악을 사용하였으나, 3회기 이후 곡의 전개가 점점 커지고 주제 멜로디의 변주로 음의 고저가 많으며, 협화음과 불협화음이 넘나드는 고전파와 낭만파의 음악을 사용하였다. 그 결과 B 내담자는 1,2회기에서는 대인관계의 어려움을 종교적인 관계로 전환하여 현실회피하려는 경향이 나타났으나 자신이 좋아하는 음악과 지지적인 음악을 통하여 공감과 지지를 경험할 수 있었다. 3회기 이후 B는 자신의 현실 문제를 인식하고 직면하였으나 회피와 직면의 양가감정을 갖게 되었다. 4회기 이후 B는 우울로 인한 감정의 변화를 음악 안에서 경험하고, 자신의 문제에 직면하였다. 5, 6회기에서는 긍정적인 자원을 통해 내적인 힘을 키우고 해결하려는 태도와 미래에서의 내가 좀 더 당당하고 건강하게 살아가려는 의지가 나타났다. 이와 같이 MI 프로그램은 GIM 프로그램보다 좀 더 현실적이고 짧은 회기수로 내담자의 문제들을 해결할 수 있다는 가능성을 제기한다. GIM처럼 깊은 무의식속으로 접근 하지 않고도, MI는 현실주의 상담과도 같이 내담자의 현실적인 문제를 근거로 하여 문제인식 및 통찰, 해결해 나갈 수 있다. 특히 음악의 사용에 있어서도 다양한 장르의 곡을 내담자에게 맞게 사용할 수 있으며, 음악감상 시간도 GIM에 비해 짧고 곡의 기능들도 구조화되어 내담자의 감정을 심상으로 잘 표현 할 수 있다. 그러므로 MI는 내담자의 음악선호도와 음악의 다양한 기능들을 활용하여 개인과 그룹으로 성인뿐만 아니라 아동 및 청소년에게도 알맞게 수정 보완하여 사용할 수 있음을 시사한다.