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안트라센 유도체-합성DNA의 결합형태와 에너지전달과정에서 구아닌 염기의 아민기의 역할
조창범,손관수,한성욱,정맹준,정현숙,이길준,Cho, Chang-Beom,Son, Gwan-Su,Han, Sung-Wook,Jung, Maeng-Jun,Chong, Hyun-Suk,Lee, Gil-Jun 대한화학회 2000 대한화학회지 Vol.44 No.1
안트라센 유도체-합성DNA의 결합형태를 여러 가지 분광학적인 방법들을 통해서 알아보았다. Methylamine과 methylethylenediamine, 즉, 길이가 다른 곁사슬을 가지는 안트라센 유도체들이 poly[d(A-T)2]와 $poly[d(G-C)_2]$의 이중나선에 결합했을 때의 분광학적인 특성은 흡광, 원편광스펙트럼에서 봉우리의 장파장으로 이동, 흡광도의 감소를 볼 수 있으며, 선편광스펙트럼에서는 DNA흡광 영역에서 강한 음의 봉우리가 나타나는 것으로 요약할 수 있다. 이러한 현상들은 안트라센·유도체들이 위의 두 가지 DNA의 염기쌍 사이에 삽입이 되어있다는 것을 증명한다. 곁사슬의 길이에 따른 분광학적인 특성에는 별 차이가 없는 것으로 보아 곁사슬의 길이는 결합형태에 영향을 미치지 앓는다는 것을 알 수 있다. 또한, 강한 에너지의 전달이 $pdy[d(A-T)_2]$와 $poly[d(I-C)_2]$에는 일어나지만 $poly[d(G-C)_2]$에는 일어나지 않는 것으로 보아 $poly[d(G-C)_2]$의 작은 흠쪽에 돌출해 있는 아민기가 DNA염기로부터의 에너지의 전달을 방해하고 있는 것으로 판단된다. The binding mode of anthryl derivatives to synthetic polynucleotides were investigated by various spectroscopic methods. The spectroscopic properties of anthracence with metbylamine and methylethylenediamine side chains, complexed with $poly[d(A-T)_2]$ and $poly[d(G-C)_2]$, can be summarized as a red-shift, with a strong hypochromism in the absortion spectrum, similar induced CD spectra, and a strong negative LD spectrum with an $LD^r$ magnitude comparable to the DNA absorption region. These observations indicate that anthracene moiety is intercalated between the nucleo-bases of $poly[d(A-T)_2]$ and $poly[d(G-C)_2]$. The side chains did not alter the spectroscopic properties, demonstrating that the binding mode was not affected by them. A strong energy transfer was observed from poly[d(A-T),] and $poly[d(I-C)_2]$ but not from $poly[d(G-C)_2]$, as reported by Kumar et al. (J. Am. Chem. Soc.(1993) 115, 8547). Since the binding mode is the same for all the polynucleotides, the amine group of the guanine base, which protrudes into the minor groove of $poly[d(G-C)_2]$, is concluded to disrupt the energy transfer.
조창범 ( Chang Beom Cho ),김동규 ( Dong Gyu Kim ),김창환 ( Chang Hwan Kim ),박지영 ( Ji Young Park ),이석원 ( Seok Won Lee ),장승훈 ( Seung Hun Jang ),정기석 ( Ki Suck Jung ),전선영 ( Sun Young Jun ),이재웅 ( Jae Woong Lee ) 대한결핵 및 호흡기학회 2008 Tuberculosis and Respiratory Diseases Vol.65 No.1
Catamenial hemoptysis is a rare condition that`s characterized by recurrent hemoptysis occurring in association with menstruation, and this is associated with the presence of intrapulmonary or endobronchial endometrial tissue. The diagnosis of pulmonary endometriosis can be made according to a typical clinical history and with exclusion of other causes of recurrent hemoptysis. Treatment of pulmonary endometriosis can be medical or surgical; however, the optimal management of this condition is still a matter of debate. Medical therapy may be problematic, due to recurrence of symptoms despite hormonal ablation, and adverse effects from long-term hormone therapy can also be a problem. We report here on a case of pulmonary endometriosis in a 23-year-old woman who presented with hemoptysis that occurred during the first 3 days of menstruation, and this happened over a 4 month period. She was successfully treated by video-assisted thoracoscopic surgery (VATS). No more hemoptysis was noted during 12 months of follow-up.
성인에서 국소 장괴사를 동반한 Henoch-Schonlein Purpura 1예
김수진 ( Su Jin Kim ),박철희 ( Cheol Hee Park ),김소연 ( So Yeon Kim ),이인정 ( In Joung Lee ),박철민 ( Chul Min Park ),조창범 ( Chang Beom Cho ),권진우 ( Jin Woo Kwon ),박지원 ( Ji Won Park ),허경림 ( Kyung Rim Huh ),김경오 ( Kyo 대한장연구학회 2011 Intestinal Research Vol.9 No.2
Henoch-Schonlein purpura (HSP) is a vasculitis of the small vessels of the skin, joints, gastrointestinal tract, and kidneys characterized by immunoglobulin A deposits in the involved organs. HSP is typified by the classic tetrad of purpura, arthralgia, abdominal pain, and renal involvement. It is common in childhood, but may also occur in adults and can be accompanied by severe complications. Gastrointestinal symptoms occur in up to 85% of patients,and gastrointestinal involvement can manifest as severe problems including intussusception, obstruction, and perforation. The disease course is often self-limited, but severe manifestations occasionally require surgical intervention. We report the case of a 24-year-old man with HSP who presented with abdominal pain and vomiting. Computerized tomography revealed thickening of the ileal wall and multifocal disrupted prominent mucosal enhancement. These findings suggested hemorrhagic enteritis and mucosal necrosis. After treatment with high dose corticosteroids, the lesion improved and surgical intervention was avoided. Our experience suggests that corticosteroid therapy may help in controlling HSP with suspicious small bowel necrosis. (Intest Res 2011;9:148-152)