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김경락,황의환,이상래 慶熙大學校 齒科大學 1994 慶熙齒大論文集 Vol.16 No.1
The aim of this study was to evaluate the clinical, radiographic and histopathologic features of 23 cases of solitary ?.cone cyst by means of the analysis of radiographs and biopsy specimens in 23 persons visited the Department of Oral and Maxillofacial Radiology, School of Dentistry, Kyung Hee University and Chunbuk National University The obtained results were as follows 1. The incidence of solitary bone cyst was almost equal in males(52.2%) and in females(47.8%) and the prevalent age of the solitary bone cyst were the second decade(47.8%) and the third decade (21.7%). 2 In the signs and symptoms of solitary bone cyst, pain or tenderness revealed in 17`.4%, swelling revealed in 13.0%, pain and swelling revealed in 21.7%, paresthesia revealed in 4.4% and 435% were asymptom and the tooth vitality involved in the solitary bone cyst, 76.5% were positive and 23.5% were either positive or negative. 3. In the location of the solitary bone cyst, 47.8% present posterior region, 21.7% present anterior region, 21.6% present anterior and posterior region, 4.4% present condylar process area. 4. In the hyperostotic border of the solitary bone cyst, 47.8% were seen entirely, 21.8% were seen partialy, and 30.4% were not aeon. 5. In the change of tooth, 59.1% were intact, 18.2% were loss of the alveolar lamina dura, 13.6% were root resorption 4:55% were tooth displacement, 4.55% were root resorption and tooth displacement. 6. In the change of cortical bone of the solitary bone cyst, 39.1% were intact and 60.9% were thinning and expansion of cortical bone. 7. In the histopathologic findings of 9 cases, 33.3% were thin connective tissue wall, 11;1% were thickened myxofibromatous wall, 55.6% were thickened myxofibromatous wall with dysplastic bone formation.
김용가,손경락,손태중 慶北大學校 醫科大學 1991 慶北醫大誌 Vol.32 No.1
저자들은 전신 방사선 조사후 소장의 점막 변화를 주사전자 현미경으로 관찰하여, 급성 방사선 상해의 일단을 알아보기 위해, 흰토끼에 2,000rad를 1회 전신 조사하여 말단회장의 절편을 채취하여 시료로 사용하였다. 융모의 변화는 방사선 조사후 20분 군에서 가장 심하게 나타났으며, 이후 시간이 경과함에 따라 융모의 변화는 경미해 지면서 1일후는 거의 정상 융모의 모양을 나타내었으며, 미융모의 크기 및 분포는 시간의 경과와 관계없이 대체로 일정하였으나 3시간 군까지는 미융모의 일부에서 수포형성이 관찰되었다. 미융모의 밀도는 대조군보다는 방사선 상해를 받은 군에서 더욱 높게 나타났다. 개개 세포는 1시간 군까지 부분적으로 세포의 탈락이 있을 뿐 시간경과에 따른 유의성있는 변화는 관찰되지 않았다. 이상의 검사성적으로 미루어 다음과 같은 결론을 얻었다. 첫째,전신 방사선 조사시 상해는 20분 군에서 가장 심하게 나타났으며, 둘째, 융모의 모양은 방사선 조사후 1일 군부터 거의 대조군과 가까운 소견을 보인 것으로 미루어 상피세포의 재생이 왕성하다고 생각된다. 셋째, 편평한 융모나 거대세포는 관찰되지 않았다. 넷째, 미융모는 방사선 조사후 3시간 군까지 밀도가 증가하였으며, 상피세포가 재생되면서 대조군과 유사해 질수록 미융모의 밀도는 다소 낮아진다. 다섯째, 점막 세포는 1시간 군까지 경한 세포탈락이 있을 뿐 시간경과에 따른 유의성이 없었다. 여섯째, SEM은 방사선 조사시 소장 점막의 3차원적 구조를 관찰하는데 민감한 도구이다. 일곱째, 미융모는 방사선 상해를 받은 군에서 더 발달되어있다. The authors studied acute radiation injury of small intestine by scanning electron microscope. Rabbit as an experimental model was irradiated 2,000rads/once. After that, a segment of terminal ileum was obtained and examined with time. Changes of villi are most severe on the 20 min experimental group and after that the severity was gradually regressed. With time, change of villi becomes mild and nearly normal on the 4day experimental group. Change of size and distribution of microvilli are relatively constnat with time except mild microvesicular changes to the 3hr group. Density of microvilli is usually higher on the irradiated group than control group. Focally cell loss is present but there is no remarkable changes with time on the individual cells. Following are conclusions of this experiment. First, radiation injury is most severe on the 20 min group. Second, shape of villi is close to normal from 1hr group, which suggests that this radiatio ninjury is reversible one. Third, flat villi or giant cell was not observed. Fourth, density of microvilli is increased to the 3hr group but regressed after that. Fifth, mucosal cells reveal relatively unremarkable change with time except mild cell loss to the 1hr group. Sixth, SEM is relatively sensitive method to see 3 dimensional structure of mucosa after radiation injury. Seventh, change of microvilli are more severe on the irradiated group.
항생제 다제내성균 Staphylococcus aureus SA2로부터 분리한 테트라사이클린 내성 플라스미드 pKH6의 염기서열
이대운,윤성준,김우구,신철교,임성환,이백락,문경호 한국미생물생명공학회 ( 구 한국산업미생물학회 ) 1996 한국미생물·생명공학회지 Vol.24 No.4
한국에서 임산균주로부터 분리한 테트라사이클린(Tc) 내성 플라스미드 pKH6의 전체 염기서열을 결정하여 가장 대표적인 Tc 내성 플라스미드인 pT181과 비교하였다. pKH6의 전체 길이는 4439bp로 pT181과 동일하게 나타났으며 염기서열은 7개의 염기에서 차이를 보였다. 전부 다 염기쌍이 치환된 형태로 나타났으며 그 중 3개는 coding 부위에서 일어났다. coding 부위에서 일어난 경우에도 1개는 동일한 아미노산을 coding 하였기 때문에 pT181과 차이가 없었으며 RepC와 Pre 단백질에 있어 각각 1개의 아미노산에서 차이를 나타내었다. The complete nucleotide sequence of pKH6, a tetracycline-resistance (Tc^r) plasmid isolated from multi-drug resistant Staphlococcus aureus SA2, has been determined and compared with that of the staphylococcal Tc^r plasmid pT181. The nucleotide sequences of the two plasmids are in agreement except for 7 nucleotides. All differences are caused by base pair substitutions. Among 6 substitutions, 3 occurred in coding regions. However, only tow base substitutions in coding regions resulted in changes of amino acid sequences in two different ORFs of repC and Pre proteins.
An Intravertebral Pseudoaneurysm Formed after Infective Spondylitis
Kim Sum,Kang Chang Kyung,Park Hangeul,Kim Young Rak,Kim Jun-Hoe,Lee Chang-Hyun,Chung Chun Kee,Kim Chi-Heon 대한말초신경학회 2023 The Nerve Vol.9 No.2
The surgical treatment of spondylitis involves potential risks, especially when dealing with infected tissues that may be fragile and susceptible to injury from surgical trauma and inflammation. In cases where spondylitis is not controlled even after the initial surgery, unexpected situations can arise if an unusual change in infected tissues around the spine is misinterpreted. The present case involves a 62-year-old who underwent laminectomy, debridement, and stabilization from T12 to L2 due to medically intractable spondylitis caused by methicillin-resistant Staphylococcus aureus. No major bleeding or vascular injury occurred during surgery. However, despite some improvement in pain and weakness, inflammation markers remained elevated and back pain recurred. A computed tomography (CT) scan taken 15 days after surgery showed a round-enhancing lesion inside the L1 vertebra. Although the primary imaging diagnosis suggested a loculated abscess, a round-enhancing lesion raised suspicion of an unusual pseudoaneurysm. A CT angiography confirmed a pseudoaneurysm from the L1 segmental artery, successfully treated with endovascular embolization. After embolization, the patient’s back pain improved, and inflammation markers further decreased with oral antibiotics. This case highlights the possibility of a pseudoaneurysm occurring in cases of spondylitis, emphasizing the importance of considering this entity in the differential diagnosis to ensure proper treatment.
Kim, Jin Han,Jeong, Hui Rak,Jung, Da Woon,Yoon, Hong Bin,Kim, Sun Young,Kim, Hyoung Ja,Lee, Kyung-Tae,Gadotti, Vinicius M.,Huang, Junting,Zhang, Fang-Xiong,Zamponi, Gerald W.,Lee, Jae Yeol Pergamon 2017 Bioorganic & medicinal chemistry Vol.25 No.17
<P><B>Abstract</B></P> <P>As a bioisosteric strategy to overcome the poor metabolic stability of lead compound KYS05090S, a series of new fluoro-substituted 3,4-dihydroquinazoline derivatives was prepared and evaluated for T-type calcium channel (Ca<SUB>v</SUB>3.2) block, cytotoxic effects and liver microsomal stability. Among them, compound <B>8h</B> (KCP10068F) containing 4-fluorobenzyl amide and 4-cyclohexylphenyl ring potently blocked Ca<SUB>v</SUB>3.2 currents (>90% inhibition) at 10μM concentration and exhibited cytotoxic effect (IC<SUB>50</SUB> =5.9μM) in A549 non-small cell lung cancer cells that was comparable to KYS05090S. Furthermore, <B>8h</B> showed approximately a 2-fold increase in liver metabolic stability in rat and human species compared to KYS05090S. Based on these overall results, <B>8h</B> (KCP10068F) may therefore represent a good backup compound for KYS05090S for further biological investigations as novel cytotoxic agent. In addition, compound <B>8g</B> (KCP10067F) was found to partially protect from inflammatory pain via a blockade of Ca<SUB>v</SUB>3.2 channels.</P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>