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정인식,김부성,선희식,박두호,차상복,이태원,양영상,최규용,문윤기,채현석 대한소화기내시경학회 1995 Clinical Endoscopy Vol.15 No.3
In the evaluation of the source of occult bleeding, it is mandatory that the small bowel be investigated. But, the small bowel is the area where endoscopic approach is most difficult. The endoscopic evaluation of the small intestine has rapidly evolved over the last 10 years and now includes many of the diagnostic and therapeutic capabilities of standard endoscopic procedures. Various techniques have been developed, including fiberoptic sonde enteroscopy, retrograde ileoscopy, intraoperative enteroscopy, $quot;push$quot; enteroscopy using a pediatric colonoscope, and video enterocopy. Therefore, the small bowel enteroscope has shown great promise in the evaluation of obscure or persistent gastrointestinal bleeding. We have experienced a case of bleeding from jejunal leiomyosarcoma, which diagnosed with small bowel enteroscopy. So we report the case with a brief review of literature.
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5'-Untranslated Region에 존재하는 Iron Responsive Element에 의한 Ferritin 합성조절
정인식,이중림,김해영,Chung,,In-Sik,Lee,,Jung-Lim,Kim,,Hae-Yeong 한국응용생명화학회 1998 Applied Biological Chemistry (Appl Biol Chem) Vol.33 No.2
철의 대사과정에 관여하는 ferritin 단백질의 발현은 ferritin transcript의 5'-untranslated region에 위치한 iron-responsive element (IRE)와 철 농도 조절 단백질의 결합에 의해 조절된다. 이러한 ferritin의 생성에 관여하는 구조적인 요소를 밝히기 위해, RNA 이차구조인 IRE의 bulge 부분을 다른 염기로 변환시켜 철 농도 조절단백질에 의한 RNA 결합력과 ferritin 단백질의 생성의 저해정도를 비교 측정하였다. 측정된 결과로부터 IRE의 bulge 부분의 시토신 염기배열만이 RNA 이차구조의 형성에 중요한 작용을 하여 ferritin 합성을 조절할 수 있는 것을 보였다. The expression of ferritin involved in iron metabolism is regulated at the translational level by the interaction of iron regulatory protein with iron-responsive element(IRE) in the 5'-untranslated region of ferritin transcript. To identify the role of structural element utilized for translational regulation of ferritin, we studied the effects of mutations in the ferritin IRE by measuring IRP binding activity and translational activity. Our data suggest that the cytosine at bulged position of IRE within ferritin is important for the formation of RNA secondary structure involved in translational regulation.
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Fuctional Relationship between Depredicate Nouns, Their Arguments and Their Prepositions
정인식 신영어영문학회 2007 신영어영문학 Vol.0 No.36
This paper explores a functional relationship between prepositions before and behind depredicate NPs. First, it addresses depredicate NPs in their relationship to the corresponding finite clauses, showing the occurrence of arguments not only in genitive forms and of phrases but also in other prepositional phrases as notional case markers. It also shows that there is a close relation between the word order of a SVO sentence and that of a depredicate NP and that there is a considerable consistency between both of them in a variation of a word order with regard to the discourse-familiarity of Prince (1981). Furthermore, in a combination of a preposition and its nominalized object, the former is influenced by the latter and behaves like a conjunction.
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정인식,김부성,박두호,이태원,양영상,임효영,김성권,윤영연 대한소화기내시경학회 1997 Clinical Endoscopy Vol.17 No.1
Leiomyoma is a neoplasm of smooth muscle relatively common in the stomach, but very rare in the duodenal location. Recurrent bouts of severe melana remain the most frequent presenting symptom for leiomyoma. A 69-year-old man presented to us with a 4-day history of melena. Endoscopy revealed norinal mucosa covered ovoid elevated lesion with central linear depression and ulcer at the second portion of duodenum. Endoscopic biopsy showed chronic inflammation only. Duodenal mass was excised through a duodenotomy. Pathological diagnosis was leiomycena.
