X線 全身照射에 依한 家兎蟲垂 淋巴組織의 微細構造의 變化

河在昌,洪錫宰 慶北大學校 醫科大學 1979 慶北醫大誌 Vol.20 No.1

成熱家兎를 實驗動物로 하여 600γ의 X線을 單回 全身照射하고 B淋巴球系의 中樞淋巴組織으로 알려진 충수임파조직에 惹起되는 變化를 機能的 組織構造에 따라 病理組織學的 및 電子顯微鏡的으로 檢索하여 다음과 같은 結果를 얻었다. 組織學的으로는 충수임파조직의 dome과 follicle에서 大小淋巴球의 甚한 懷死 消失과 大食細胞의 顯著한 增加를 볼 수 있었으나, 胸腺依存域인 TDA에서는 淋巴球의 壞死 消失이 比較的 輕한 程度로 認定되었다. 上記한 變化들은 X線 照射後 3時間에도 顯著하였으나 照射後 1日에는 더욱 甚하였다. 電子顯微鏡的으로는, X線 照射後 3時間에는 dome 및 follicle에서 淋巴球의 核染色質은 核邊緣部로 凝集되고 核中心部는 稀薄化되었고 어떤 淋巴球에서는 核濃縮을 일으키고 있었으며, mitochondria에서는 cristae가 消失되고 空胞化하는 傾向이 있었다. 그리고 組織球가 增加하고 그 細胞質內에서 lysosome의 增加, 濃縮된 核斷片의 탐식 等의 所見도 輕度로 認定되었다. 照射後 1日에는 dome 및 follicle에서 淋巴球는 大多數가 破壞消失되었고, 組織球가 顯著하게 增加되어 破壞된 細胞成分들을 활발하게 탐식하고 있는 것을 볼 수 있었다. 그러나 TDA에서는 淋巴球에서 染色質의 核邊緣部 凝集 乃至 核濃縮 그리고 mitochondria의 變性을 多少 볼 수 있었으나 甚한 破壞性變化는 認定되지 않았으며, 組織球의 貪 機能도 顯著하지 않았다. 以上의 實驗成績으로 보아, X線 照射에 對해서 B淋巴球를 生産하는 中樞淋巴組織의 淋巴球들은 感受性이 높아서 早期에 甚하게 破壞되며, 抹消淋巴組織에 分布하는 T淋巴球는 比較的 抵抗性이 있어서 損傷을 적게 받는 것으로 推定된다. This study was undertaken to investigate the structural changes of the appendiceal lymphoid tissues of the adult rabbit after whole body X-irradiation by the light and electron microscopes. Nine healthy rabbits, weighing 2 to 2.5 Kgm were divided into 2 groups: Group 1: Control group: Untreated (3 rabbits) Group 2. Experimental group: A single air dose of 600r whole body X-irradiation was given (6 rabbits). Experimental animals were sacrificed at 3 hours and 1 day after irradiation and examined light and electron microscopically. The results were summarized as follows: Light microscopically, the appendical lymphoid tissues showed marked necrotic loss of small and large lymphocytes as well as considerable increase of macrophages in the dome, corona and follicle. But thymus dependent area (TDA) was relatively well preserved with mild degree's necrotic loss of the cells. These changes were apparent 3 hours after irradiation and more prominent after 1 day. Electron microscopically, the nuclei of lymphocytes in the dome and follicle revealed peripheral aggregation of chromatin with central rarefaction after 3 hours. Some lymphocytes showed pyknotic changes. Mitochondria of the these cells were vacuolated and lossed their cristae. Macrophages at this time were increased in number and showed increase of lysosomes with phagocytosis of nuclear fragments. After 1 day, lymphocytes in the dome and follicle were substantially destructed and lossed. Macrophages were markedly increased in number and showed considerable number of phagosomes containing destructed cellular debris in the cytoplasms. In the TDA, only milder degree of chromatin aggregation, pyknosis and mitochondrial degeneration were found but apparent destructive changes were not impresive. Phagocytic activities of macrophages were also inapparent. These results suggested that central lymphoid tissue for differentiation of B-lymphocytes was very sensitive to X-irradiation and severely affected at early stage, while T-lymphocytes distributed to peripheral lymphoid tissue were relatively radioresistant and affected lesser degree.

A Case of Occupational Hypersensitivity Pneumonitis Associated with Trichloroethylene

Jae, Young,Hwang, Eu Dong,Leem, Ah Young,Kang, Beo Deul,Chang, Soo Yun,Kim, Ho Keun,Park, In Kyu,Kim, Song Yee,Kim, Eun Young,Jung, Ji Ye,Kang, Young Ae,Park, Moo Suk,Kim, Young Sam,Kim, Se Kyu,Chang, The Korean Academy of Tuberculosis and Respiratory 2014 Tuberculosis and Respiratory Diseases Vol.76 No.2

Trichloroethylene (TCE) is a toxic chemical commonly used as a degreasing agent, and it is usually found in a colorless or blue liquid form. TCE has a sweet, chloroform-like odor, and this volatile chlorinated organic chemical can cause toxic hepatitis, neurophysiological disorders, skin disorders, and hypersensitivity syndromes. However, the hypersensitivity pneumonitis (HP) attributed to TCE has rarely been reported. We hereby describe a case of HP associated with TCE in a 29-year-old man who was employed as a lead welder at a computer repair center. He was installing the capacitors on computer chip boards and had been wiped down with TCE. He was admitted to our hospital with complaints of dry coughs, night sweats, and weight losses for the past two months. HP due to TCE exposure was being suspected due to his occupational history, and the results of a video-associated thoracoscopic biopsy confirmed the suspicions. Symptoms have resolved after the steroid pulse therapy and his occupational change. TCE should be taken into consideration as a potential trigger of HP. Early recognition and avoidance of the TCE exposure in the future is important for the treatment of TCE induced HP.

Combined Effect of Bilateral Ovariectomy and Anterior Cruciate Ligament Transection With Medial Meniscectomy on the Development of Osteoarthritis Model

Kim, Jae Lim,Moon, Chang Won,Son, Young Suk,Kim, Sang Jun Korean Academy of Rehabilitation Medicine 2016 Annals of Rehabilitation Medicine Vol.40 No.4

<P><B>Objective</B></P><P>To investigate the combined effect of bilateral ovariectomy (OVX) and anterior cruciate ligament transection (ACLT) with medial meniscectomy (MM) on the development of osteoarthritis (OA).</P><P><B>Methods</B></P><P>Twenty female 15-week-old Sprague-Dawley rats were used. Five rats in each group underwent bilateral OVX (OVX group), bilateral ACLT with MM (ACLT with MM group), bilateral OVX plus ACLT with MM (OVX plus ACLT with MM group), and sham surgery (SHAM group). All the rats were subjected to treadmill running for 4 weeks. The behavioral evaluation for induction of OA used the number of rears method, and this was conducted at 1, 2, and 4 weeks post-surgery. Bone mineral density (BMD) was calculated with micro-computerized tomography images and the modified Mankin's scoring was used for the histological changes.</P><P><B>Results</B></P><P>The number of rears in the OVX plus ACLT with MM group decreased gradually and more rapidly in the ACLT with MM group. Histologically, the OVX plus ACLT with MM group had a significantly higher modified Mankin's score than the OVX group (p=0.008) and the SHAM group (p=0.008). BMDs of the OVX plus ACLT with MM group were significantly lower than the SHAM group (p=0.002), and the ACLT with MM group (p=0.003).</P><P><B>Conclusion</B></P><P>We found that bilateral OVX plus ACLT with MM induced definite OA change in terms of histology and BMD compared to bilateral OVX and ACLT with MM alone. Therefore, OVX and ACLT with MM was an appropriate degenerative OA rat model.</P>

평활근 증식과 점액성 기질 변화를 보인 사구맥관근종 1 예

김창덕(Chang Duk Kim),박재홍(Jae Hong Park),류영욱(Young Wook Ryoo),김병천(Byung Chun Kim),이규석(Kyu Suk Lee) 대한피부과학회 2001 대한피부과학회지 Vol.39 No.10

Glomus tumors are benign neoplasms that are derived from modified smooth muscle cells known as glomus cells. Histologically, it can be subdivided as glomus tumor proper, glomangioma, and glomangiomyoma according to relative proportions of components. Glomangiomyomas are the least frequent type and their overall architectural pattern may resemble glomus tumor proper or glomangioma, but there is a gradual transition from glomus cells to elongated mature smooth muscle cells. This transition is most obvious in the region surrounding large vessels. We present a case of glomangiomyoma of the left upper arm and the left fourth finger, in which ten-year history of two painful, bluish-colored subcutaneous nodules. On histologic examination, this case showed marked smooth muscle cell proliferation around large vessles and mucinous stromal change. (Korean J Dermatol 2001;39(10) 1147-1151)

일측 폐이식 성견에서 혈역학과 체액조절 호르몬의 상관관계

서강석,박창권,송대규,배재훈,박원균 啓明大學校 醫科大學 2002 계명의대학술지 Vol.21 No.1

폐이식에 의한 체액이나 혈압의 변동 및 신경의 절단은 혈압 및 체액의 조절에 관여하는 호르몬의 분비에 영향을 미치리라 생각되어 좌일측 폐이식 시 이식폐에 분포하는 신경이 절단된 상태에서 폐이식 후 수용견의 혈역학적 변동이 ANP 및 ADH의 분비와 어떠한 상관관계가 있는지를 관찰하였다. 한국산 성견 12마리를 대상으로 좌일측 폐이식을 시행하였다. 공여폐의 보존은 low potassium dextrane glucose용액을 이용하여 10℃에서 20시간동안 보존한 다음 수용견에 이식하였다. 수용견의 좌측 폐를 적출하기 전과 후, 그리고 이식 후 재관류 30분, 2시간 후에 각각 혈역학 및 동맥혈 가스분압을 측정하였고, 동맥혈에서 ANP 및 ADH의 농도를 측정하였다. 동맥혈의 P_(O_2) 및 P_(CO_2)는 유의한 변동은 없었다. 대퇴동맥압을 재관류 후 30분에는 유의하게 감소하였고, 재관류 2시간 후에는 다소 회복세를 보이는 경향이었으며, 맥압은 비교적 유지되었다. 폐동맥압은 좌측폐 절제 시 이완기 폐동맥압은 변동이 없는 반면에 수축기 폐동맥압은 증가하였고, 재관류 시 폐동맥압은 어느 정도 회복되는 양상이었다. 심박출량은 좌측 폐절제 후에는 감소하였으며 재관류후에도 낮게 유지되는 양상이었다. 반면에 심박수는 유의한 변화없이 유지되었다. 전신혈관저항 및 폐혈관저항은 좌측 폐절제 후나 재관류 30분에 증가하였으며, 재관류 2시간 후 폐혈관저항은 회복되는 양상이나 전신혈관저항은 회복되지 못하였다. 혈중 ANP는 일측 폐절제 후 증가하였고, 재관류 후에는 점차 회복되는 양상을 보였고, ADH는 일측 폐절제 후, 30분에 증가한 후 회복되는 양상을 보였다. 동맥혈 ANP의 변동은 동맥혈 P_(O_2)및 P_(CO_2)와 상관관계를 보였고, ADH는 전신 동맥압의 변동과 상관관계가 있었다. 이상의 결과로 좌일측 폐이식 시에도 ANP 및 ADH는 혈역학적 변화와 연관하여 동맥압 및 체액의 조절에 생리적으로 관여하는 것으로 사료되며, ANP의 분비는 동맥혈의 저산소증 그리고 ADH의 분비는 동맥의 압수용기를 통한 신경성 조절의 영향을 받을 수 있는 것으로 생각된다. The purpose of this investigation was to study changes of plasma atrial natriuretic peptide (ANP) and antidiuretic hormone (ADH) in Korean mongrel dogs after a left single lung transplantation and to evaluate the correlation between hemodynamic factors and secretory responses of ANP and ADH. Arterial P_(O_2 and P_(CO_2) did not change significantly. Femoral arterial pressure decreased after 30 min of reperfusion and recovered slightly at 120 min, whereas pulse pressure did not change. After pneumonectomy, systolic pulmonary arterial pressure increased, whereas diastolic pulmonary pressure remained unchanged. Althought cardiac output fell following pneumonectomy and reperfusion, heart rate was unchanged. The secretion of plasma ANP initially increased follwoing pneumonectomy, but subsequently recoverd. In each subject, ANP values showed stronger correlation with arterial P_(O_2) than other hemodynamic parameters. The secretion of plasma ADH also initially increased (p<0.05) after 30 min of reperfusion and thereafter recoverd, showing the strongest correlation with mean femoral arterial pressure. The present results suggest that the secretion of ANP and ADH seem to be well regulated in accordance with hemodynamic changes after a single lung transplantation. Hypoxia and systemic arterial pressure are the prominent factors in the secretion of ANP and ADH, respectively.

Electron Cyclotron Resonance O_2 Plasma에서 증착한 규소 산화 박막의 특성

안명환,서문석,장재선,서성모,이기방,윤창주,이형재,남기석,최규현,손춘배,김용섭,강석희 全北大學校 基礎科學硏究所 1994 基礎科學 Vol.17 No.-

규소 산화막을 ECR-CVD(electron cyclotron resonance-chemical vapor deposition) 증착방법으로 5인치 기판위에 상온에서 증착하고, 증착공정조건인 증착율, 기판온도, 마이크로파의 세기변화 및 플라즈마 혼합기체의 비에 따른 규소 산화막의 특성을 조사하였다. 또한 산화막의 구조적인 특성을 비교하기 위해 FTIR을 이용하여 ECR-CVD 증착한 산화막, RPE-CVD(remote plasma enhanced-CVD) 증착한 산화막 및 열 산화막의 stretching frequency를 측정하였다. 측정된 결과 ECR-CVD로 증착된 산화막이 구조적인 면에서 열 산화막과 거의 같음을 보였다. ECR-CVD로 증착된 산화막의 전기적인 특성을 전류-전압 및 축전-전압 측정에의하여 분석하였다. 축전된 산화막의 전기적인 특성은 산화막의 전하 밀도는 1×10 exp (11)/㎠이였고, 평균 절연 파괴 전압은 약 6 MV/㎝이다. We have grown thin films of SiO_2 at room temperature by using an ECR-CVD system and have investigated the changes in the properties of the deposited films with changes in the processing conditions such as the deposition rate, the substrate temperature, the microwave power and the plasma gas mixing ratio. We also measured the stretching frequency of three kinds of oxides, and ECR-CVD-grown oxide, a PECVD-grown oxide, and a thermally grown oxide, using FTIR analysis to compare their structural properties. The result shows that the structural properties of the ECR-grown oxide are similar to those of the thermally grown oxide. Additionally, the electrical properties of the ECR-grown oxide were investigated by using current-voltage and capacitance-voltage measurements. These electrical results indicate that the oxide charge density and the average breakdown voltage are 1×10 exp (11) ㎝^-2 and 6 MV/㎝, respectively.

유산양에서 발정동기화 유도와 인공수정 효율

장석민,강재구,최기명,김홍래,진동일 충남대학교 농업과학연구소 2007 농업과학연구 Vol.34 No.1

This study was conducted to evaluate the response of CIDR-S on estrus synchronization of dairy goats and the effect of artificial insemination on conception rate. Estrus synchronization of sexually matured Saanen goats was induced with insertion of CIDR-S into vagina for 15 days and injection of 500 IU PMSG before removal of CIDR-S. Artificial insemination was conducted using liquid or frozen semen by intra-cervical insemination with synchronized does. Estrus synchronization was 90% using CIDR-S insertion for 15 days. Conception rate of inseminated does was 20% - 25%, while that of natural mated does was 100%. These results suggested that synchronization of dairy goats can be successfully induced and artificial insemination method has to be improved for the practical use in dairy goats.

외상성 흉·요추접합부 파열골절의 Kaneda 기구를 이용한 내고정술에 대한 임상적 검토 : Results of Anterior Decompression and Stabilization with Kaneda Device

장주호,김수한,정신,김재휴,강삼석,이제혁 대한신경외과학회 1993 Journal of Korean neurosurgical society Vol.22 No.4

The authors report clinical results of twenty-three traumatic thoracolumbar burst fractures treated by internal fixation with Kaneda device after anterior decompression during recent three years. Thoracolumbar injuries made up 28.9% of total spinal injuries and the burst fractures treated by anterior decompression and stabilization with Kaneda device constituted 19.0% of all spinal injuries. The burst fractures occurred most frequently at the age of twenties and thirties. The main causes of injury were fall and vehicle accident. Superior end-plate fracture type was most common according to the types of burst fracture. The first and the second lumbar vertebrae were frequently involved. No patient showed neurological deterioration after surgery. Conus medullaris lesions in burst fractures of the thoracolumbar junction have a high potentiality for functional recovery because the lesions are not due to discontinuity or severe crush injury but due to simple compression by bony fragments. The Kaneda device offered enough stability to enable early ambulation with good alignment and solid fusion.

활동스트레스 궤양에 대한 향정신성 약물의 효과

장재홍,김기석 한국심리학회 1989 한국심리학회지 생물 및 생리 Vol.1 No.1

본 연구는 흰쥐를 피험동물로 해서 실시한 활동 스트레스궤양절차에서 위궤양의 발생에 대한 달리기 활동의 효과를 검토하고, 이 절차에 의해 초래된 신체반응 및 위궤양에 대해 향정신성 약물이 어떠한 효과를 나타내는가를 고찰하고자 하였다. 그 결과 실험 1에서 활동 바퀴에 접근할 수 있고 하루 한 시간씩 급식한 실험집단은 실험집단이 먹은 먹이량만큼만 먹이고 활동바퀴에는 접근할 수 없게 한 먹이-Yoked 통제집단에 비해 체중감소량이 더 컸으며 위궤양의 정도도 더 심하였다. 실험 2에서 benzodiazepine계 약물의 하나인 chlorodiazepoxide 15㎎/㎏장기투여집단은 생리식염수 투여집단인 통제집단에 비해 더 많은 달리기 활동량을 보였으며 체중 감소량도 통제집단보다 적었고 먹이는 더 많이 먹었으며 위궤양의 발생정도도 더 미약한 것이었다. 그리고 삼환계 항우울제의 하나인 amitriptyline 10㎎/㎏ 장기투여집단은 통제집단에 비해 달리기 활동은 유의미하게 더 적었으나 먹이섭취량과 체중감소량은 통제집단과 차이가 없었으며 위궤양의 정도에서도 통제집단과 차이가 없었다. This study investigated the impact of stress by activity stress ulcer paradigm on the physical and behvioral changes and ulceration, and examined the effects of psychotropic drugs. In experiment Ⅰ, 36 male albino rats were randomly allocated into two groups: (1) experimental group and (2) food-yoked control gorup. Rats in the experimental group were given continuous access to food, water and the running wheel during a 3-day habituation period, while the control group did not have the running wheel. The experiment was conducted until all experimental rats were dead. The food-yoked control rats were killed 24 hours after their experimental mate had died and their body weight loss and ulcer severity were measured. Results indicated that the ulceration and body weight loss of the control group was less than that of the experimental group. In experiment Ⅱ, each of the 33 albino rats was randomly assigned to one of the following three groups: saline group, chlordiazepoxide(15㎎/㎏, i.m.), amitriptyline(10㎎/㎏, i.p.). Each of the rats was injected with respective drug or saline once a day during habituation and experiment. After 3-day habituation period, the experiment has been conduted for 6 days and the rats were killed on the last day. The CDP group showed a signficant reduction in activity wheel revolution, their body weight loss was less, their food consumption was more, and their ulceration was less than the control gorup. There were no significant differences between the amitriptyline and control group in terms of body weight loss, food consumption and ulceration except a reduction in activity wheel revolution.

동물원에서 사육중인 Japanese Macaque (Macaca fuscata)에서 Zoletil 마취에 관한 연구

이재일,이수진,홍성혁,신남식,김덕환,박창식,전무형,조종민,김영석,김명철 충남대학교 형질전환복제돼지연구센터 2004 논문집 Vol. No.8

To evaluate the effects of Zoletil (tiletamine-zolazepam) that have been widely used for the chemical restraint and anesthesia of primates, on physiologic alteration, blood gas analysis and anesthetic duration in the Japanese macaque(Macaca fuscata), this study was carried out. Zoleril was administered by intramuscular injection, Evaluation of temperature, heart rate, respiration rate and blood gas analysis were performed before administration ancl at 1,10, 20, 30, 40, 50 and 60 min after administration, and induction and maintenance time was recorded. There was no significant difference in heart rate, PCO₂PO₂after Zolcril administration and temperature, respration rate, pH were significant difference compared with those of before administration, The induction time was 2.5±l.Omin and maintenance time was 86±23.2min. It was considered that Zoletil could he usefully used for the sedation and immobilization of Japanese macaque reared in zoological garden.