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당뇨병 백서의 간세포에서 Glucokinase 활성도 및 유전자 발현에 대한 인슐린의 영향
강성이(Sung Yi Kang),서광식(Kwang Sik Seo),팽정령(Jeong Ryung Paeng),우정택(Jeong Taek Woo),김성운(Sung Woon Kim),양인명(In Myung Yang),김진우(Jin Woo Kim),김영설(Young Seol Kim),김광원(Kwang Won Kim),최영길(Young Kil Choi) 대한내과학회 1994 대한내과학회지 Vol.47 No.2
N/A Introduction: The liver-specific hexokinase isoenzyme, referred to as glucokinase, is thought to play a key reglulatory role in hepatic glucose metabolism. The glucokinase gene is, therefore, of interest both because of its tissue-specific expression and because of the several regulatory processes that can be analyzed. The level of hepatic glucokinase activity appers to be determined essentially by regulation of the rate of enzyme sythesis, with insulin playing a leading role as an inducer. We investigated the role of insulin for the induction of glucokinase in the liver of diabetic rats. Methods: Experimental diabetes was induced by injection of streptozotocin 7 days before the experiment. Regular insulin was given by three days intraperitoneal injection at 8-h interval. The glucokinase mRNA in the liver was estimated by Nothern blot assay, as well as by fluorometric enzyme activity assay. Results: Glucokinase activity was not reduced in the liver of normal fasting rats as compared to normal fed rats. But glucokinase activity was recuced in the liver of daibetic rats as compared to normal rats. In diabetic rats treated with insulin, glucokinase enzyme activity were increased. But glucokinase mRNA expression was only increased in normogycemic diabetic rat with treated with insulin as compared to hyperglycemic rat. Conclusion: These data indicate that insulin stimulates hepatic glucokinase enzyme activity and mRNA expression. But other hormonal or metabolic factors may be contribute to regulation of glucokinase mRNA expressiom.
이진근,이남석,강성원,김선태,장규하,이유,홍익선,최정림,민경욱,정종일,Jingeun Rhee,Nam-Seok Lee,Sung Won Kang,Seontae Kim,Kyu-Ha Jang,Yu Yi,Ik-Seon Hong,Cheong Rim Choi,Kyoung Wook Min,Jongil Jung 한국우주과학회 2023 우주기술과 응용 Vol.3 No.1
The mass spectrometer, being an essential scientific instrument for uncovering the origin of the solar system and life, has been used since the early 1970s on board spacecraft to obtain information of neutral and ionized elements in the atmosphere and surface of the moon, planets, asteroids, and comets. According to the 4th Basic Plan for the Promotion of Space Development (2023-2027), Korea plans to conduct lunar landing in 2032 and Mars landing in 2045 as the core goals of the plan and focuses on developing the technologies required for unmanned robotic exploration missions. In this regard, it is crucial to develop the technology of a mass spectrometer, which is the most fundamental payload for space exploration for maximized scientific achievements, however never tried before in any domestic space missions. We describe in this paper the principle of a domestically developed quadrupole mass spectrometer, its prototype model, and the test results of its performance. We conclude this paper with intended future improvements.
김효종(Hyo Jong Kim),강성이(Sung Yi Kang),김병호(Byung Ho Kim),이정일(Joung Il Lee),장영운(Young Woon Chang),장린(Rin Chang) 대한내과학회 1991 대한내과학회지 Vol.40 No.4
N/A Perforated peptic ulcers are frequently sealed spontaneously by omentum or by adjacent organs, and the associated peritonitis resolves without operation. Several surgeons, nearly 40 years ago, have applied their knowledge of the phenomenon of spontaneous seal to the treatment of the perforated duodenal ulcer and their reported mortality rate was almost half that generally recorded mortality rate for surgical treatment at that time. But despite these encouraging reports of successful non-op treatment of the perforated duodenal ulcer, the conservative treatment had not been gained widespread acceptance. Instead, much of the recent surgical literature concerns not whether patients with perforated duodenal ulcers should have an operation, but whether a definitive operation to heal the ulcer should be performed at the time of perforation. But recently there was a significant advances in ulcer treatment and antibiotic therapy. And also there was a few promising reports of non-op treatment of the perforated peptic ulcers by means of a prospective randomized or selective trial. In this study, we compared the clinical charateristics of emergency operative treatment group with non-op group retrospectively to offer the opportunity to reap- praise the role of the non-op treatment of the perforated duodenal ulcer. Our data suggest that perforated duodenal ulcer can be safely treated non-op when spontaneous seal of the ulcer perforation had occured. Therefore, efforts to induct and maintain the spontaneous sealing by using the initial observation period should be made positively.
홍익선,이유,이진근,이남석,강성원,김선태,장규하,최정림,민경욱,정종일,Ik-Seon Hong,Yu Yi,Jingeun Rhee,Nam-Seok Lee,Sung Won Kang,Seontae Kim,Kyu-Ha Jang,Cheong Rim Choi,Kyoung Wook Min,Jongil Jung 한국우주과학회 2023 우주기술과 응용 Vol.3 No.1
우리나라의 첫 달 탐사선 다누리호가 달 궤도에 진입을 성공하면서 이후 화성 탐사와 같은 우리나라의 새로운 우주탐사 계획을 기대할 수 있게 되었다. 우리나라의 우주탐사 탑재체는 한정적인 분야에서만 개발되어 새로운 우주탐사 탑재체를 개발할 필요성이 있다. 국외에서는 우주탐사에 거의 기본적으로 탑재되는 장비로 질량분석기가 있으며, 탐사 대상의 대기와 휘발성 물질 관측과 더불어 유기물 분석을 통한 생명체 탐사까지 아우르는 매우 유용한 탑재체이다. 하지만 우리나라에선 우주탐사용으로 질량분석기 탑재체를 개발한 전적이 없으므로 앞으로의 우주탐사를 대비해 기술을 확보해야 할 필요가 있다. 그에 앞서 국외의 우주탐사용 질량분석기 탑재체의 과학적 성과를 살펴보고 동향을 파악해본다.
수술로 절제한 상피하 양성 십이지장 종양: 단일 기관의 증례들
박선미 ( Seon Mee Park ),김지훈 ( Ji Hoon Kim ),류동희 ( Dong Hee Ryu ),장이찬 ( Lee Chan Jang ),강성이 ( Sung Yi Kang ),성노현 ( Ro Hyun Sung ),최재운 ( Jae Woon Choi ) 대한췌장담도학회 2014 대한췌담도학회지 Vol.19 No.1
Background/Aims: The incidence of duodenal tumors has increased by health surveillance. However, preoperative diagnosis of subepithelial duodenal tumors remains difficult because of the wide variety of pathologies and the location of the tumors. We analyzed endoscopic, radiological, and pathological features of subepithelial benign duodenal tumors (BDTs), which were treated by surgical resection. Methods: Five patients with subepithelial BDTs treated by surgical resection were analyzed retrospectively. We compared the preoperative and postoperative diagnosis and evaluated the clinical presentations, endoscopic and radiological findings, surgical treatments, pathological results, and outcomes of these patients. Results: All the patients underwent successful surgical resection. There were two cases of gastrointestinal stromal tumors (GISTs) treated with segmental duodenectomy, one case of carcinoid tumor treated with antrectomy, one case of gangliocytic paraganglioma treated with ampullectomy, and a lipoma removed by mass excision. The two GISTs were in the duodenal third and fourth segment close to the pancreas, and it was difficult to exclude pancreatic tumors by imaging studies. All the patients remained healthy for more than three years. Conclusions: Subepithelial BDTs are rare and difficult to diagnosis. Awareness and preoperative diagnosis of subepithelial BDTs can lead to minimally invasive treatment, including endoscopic or local surgical resection. Korean J Pancreatobiliary 2014;19(1):18-25
장린(Rin Chang),김병호(Byung Ho Kim),장영운(Young Woon Chang),이정일(Jung Il Lee),김효종(Hyo Jong Kim),동석호(Seok Ho Dong),강성이(Sung Yi Kang) 대한소화기학회 1993 대한소화기학회지 Vol.25 No.6
N/A Gastrin is trophic to the normal gastric and colonic mucosa and stimulates the growth of the stomach and colon cancer that possess the gastrin receptor. Plasma gastrin has been reported to be elevated among patients with colorectal cancer. Whether fasting plasma gastin concentrations are high in patients with stomach or colon cancer is controversial. We therefore studied the effect of food on plasma gastrin concentrations in patients with stomach or colorectal cancer and control subjects. Fasting plasma gastrin concentrations were higher in patients with colorectal cancer than in control subjects, but statistically not significant. There was no significant difference between the postprandial plasma gastrin concentrations of the patients with colorectal cancer and those of control subjects. Fasting and postprandial plasma gastrin concentratios in patients with colorectal cancer did not show significant difference between the patients with metastasis and without metastasis. Also, we showed that there was no significant elevation of fasting,and postprandial plasma gastrin concentrations in patients with stomach cancer compared with the control subjects, Fasting and postprandial plasma gastrin concentrations in patients with stomach cancer did not show significant difference between the patients with metastasis and without metastasis. In conclusion, the results of these studies suggest that gastrin has no significant role in the gastric and colorectal carcinogenesis. But the possibility that the stomach and colon cancer in different geographic location have differcnt. biologic characteristics couldn't be excluded.