외상성 손상과 관련된 상악 측절치 치근형성의 부분 또는 완전정지에 관한 증례보고

김도형,서태휴,이상호 大韓小兒齒科學會 1995 大韓小兒齒科學會誌 Vol.22 No.2

Partial or complete arrest of root formation is a rare complication caused by different factors that affects the permanent tooth during root development. The possible factors affecting this complication have been reported in dentin dysplasia, trauma, transmission of the periapical infection of the primary teeth to permanent tooth germ, radiation therapy, and congenital renal disease. One of these factors, traumatic injury to the primary dentition may cause a deflection or displacement of the permanent tooth bud. And the effects of trauma to Hertwig's epithelial root sheath which is essential to root development are the result of the transmission of the traumatic force through the surrounding bone or through the primary tooth. And it can cause critical damage to the normal root development. These tow cases show 2 children who complained of delayed eruption of permanent incisors, who have had a traumatic history during primary dentition. After clincial examination, because they have no more evidence of root formation of maxially lateral incisors. We extracted the permanent maxially lateral incisors which show partial or complete arrest of root formation. We concluded as follows; 1. These two cases show that one is a complete arrest of root formation when injured at 3 years old, the other is a partial arrest of root formation when injured at 5 years old. So, it is considered that direction and magnitude of traumatic forces and injured stage of permanent tooth bud will affect the root development. 2. It was noticed that there was an arrest or loss of Hertwig's epithelial root sheath in the histologic section of the extracted maxially lat. incisors. 3. After continuous observation, if there is a sign of partial or complete arrest of the root formation, impaction, or delay of the eruption of surrounding teeth after the normal root formation stage, extraction is indicated, and it is considered that orthodontic or prosthodontic treatment is needed.

전격성 제1형 당뇨병 1예

노동현,김도형,김나래,박종선,이창헌,김미경,최영식 고신대학교의과대학 2007 고신대학교 의과대학 학술지 Vol.22 No.2

전격성 제1형 당뇨병은 특발성 당뇨병환자에서 임상 경과가 짧고 진단 당시 심각한 대사 합병증을 동반하면서 췌장 효소 수치가 높고 췌도 특이 자가항체가 음성인 새로운 아형으로 알려져 있으며, 일본과 일본 외에서의 유병률에는 차이가 있는 것으로 보인다. 아직 전격성 제1형 당뇨병의 발생 기전은 명확하지 않으며 유전적 감수성이 있는 개체에서 바이러스 감염 등의 환경적인 인자와의 연관성이 가능한 병태생리로 제시되고 있으며 이에 대한 추가적인 연구가 요구된다. 저자들은 케톤산증으로 내원하여 전격성 제1형 당뇨병을 진단받은 증례를 경험하였기에 문헌고찰과 함께 보고 하는 바이다. Some patients with idiopathic type 1 diabetes have a fulminant disorder characterized by the absence of insulitis and of diabetes-related antibodies, a remarkably abrupt onset and high serum pancreatic enzyme concentrations. This is referred to as fulminant type 1 diabetes. A 29-year-old man suffering from abdominal pain, nausea and vomiting consulted to our hospital. Laboratory findings revealed high blood glucose level and the evidence of diabetic ketoacidosis, but the serum HbA1c was normal nevertheless. The low level of plasma C-peptide indicated the loss of endogenous insulin secretion. The patient satisfied the criteria for the diagnosis of fulminant type 1 diabetes. After the patient has been treated with insulin, his symptoms were improved and abnormal laboratory data were normalized. We report this case with a review of the literature

Sputtering Effect on Amorphous Ga-In-Zn-O Thin-Film Surface: Occurrence of Subgap and Metallic States

Lee, Mi Ji,Kang, Se-Jun,Baik, Jae Yoon,Kim, Ki-Jeong,Kim, Hyeong-Do,Shin, Hyun-Joon,Chung, JaeGwan,Lee, Eunha,Lee, Jaecheol,Lee, JaeHak The Electrochemical Society 2010 Electrochemical and solid-state letters Vol.13 No.12

MRI with Continuously Flowing Laser-Polarized $^3He$

Lee, Hyeong-Ju,Kim, Chul,Kim, Byung-Soo,Kim, Do-Hun,Lee, Hee-Cheon Korean Magnetic Resonance Society 2003 Journal of the Korean Magnetic Resonance Society Vol.7 No.1

MRI of laser-polarized $^{129}$ Xe under continuous flow conditions has recently been used for imaging of porous materials, however, any attempts at using a continuously circulating flow of laser-polarized $^3$He have not been made until now, presumably due to its extremely long spin exchange time (5-10 hrs). Since the inherent NMR sensitivity of $^3$He is 80 times greater than that of $^{129}$ Xe when considering the natural abundance, $^3$He can be expected to be a better nucleus for imaging than $^{129}$ Xe even under continuous flow conditions. In this report, the first MRI with continuously flowing laser-polarized $^3$He is shown for a phantom of Teflon tubing, demonstrating the feasibility of $^3$He imaging under continuous flow.

Adverse drug reactions in cancer patients: Analysis of spontaneously reported cases

( Do Hyeong Lee ),( Ye-jin Moon ),( Eun-kee Park ),( Hee-kyoo Kim ),( Gil-soon Choi ) 대한내과학회 2015 대한내과학회 추계학술대회 Vol.2015 No.1

Background: Although the number of domestic adverse drug reactions (ADRs) reported is rapidly increasing in Korea, there have been few analysis for ADRs in cancer patients. We aimed to investigate the clinical features of ADRs in cancer patients reported from a single university hospital. Methods: ADRs were collected from a spontaneous reporting system at our university hospital between July 2010 and May 2015. The cases assessed as ‘unlikely’ and ‘unclassifiable’based on World Health Organization-Uppsala Monitoring Center(WHO-UMC) criteria were excluded. Additional medical information was retrospectively collected from chart review and clinical features of ADRs were analyzed. Results: A total of 1578 cases were reported, of which 822 ADRs (52.1%) were observed in cancer patients. The mean age was 61 years (range 17- 90 yr), 46.1% were male. The most prevalent clinical features were gastrointestinal abnormalities (31.6%) such as nausea and vomiting, followed by skin (27.5%) and neurologic manifestations (25.1%). Forty nine (6%) and 297 cases (36.1%) were classified as severe and moderate reactions, respectively. The most common offending drugs were nutritional supplements (40.5%). Antibiotics (17.9%), tramadol (12.8%), and radiocontrast media (RCM, 11.1%) also frequently reported. Antineoplastic agents were 2.8%, however it was one of the common drugs for severe reactions with antibiotics, nutritional supplements, and RCM. Conclusions: Although it is well known that antibiotics, RCM, and non-steroidal anti-inflammatory drugs induce ADRs, nutritional supplements and antineoplastic agents should be considered as common causative drugs of ADRs in cancer patients. Further investigation and mornitoring to evaluate causality associated with these drugs is needed.

Effects of High Protein Diet on Meat Productivity and Quality in Multiparous Hanwoo Cull Cows

Do Hyeong Lee(이도형),Woo Jung Yoon(윤우정),Nag-Jin Choi(최낙진),Kyeong Seon Ryu(류경선),Young Kyoon Oh(오영균),Sun Sik Jang(장선식),Chang Weon Choi(최창원),Jong Won Joo(주종원),Sang Buem Cho(조상범),Eun Joong Kim(김은중) 한국생명과학회 2011 생명과학회지 Vol.21 No.9

일반적으로 다산 한우암소는 미경산 혹은 어린 한우암소에 비하여 낮은 육질을 나타내는 것으로 알려져 있으며, 현재까지 다산 한우 암소 비육을 위한 사료급여방법에 대한 연구는 매우 미비하다. 본 연구는 두 개의 서로 다른 사료로 구성된 사료급여방법이 다산 한우 암소의 육생산과 육질에 미치는 영향을 조사하였다. 대조구로는 일반 비육우사료 급여를 사용하였다. 처리구의 사료는 두 개의 서로 다른 단백질 수준으로 구성되어 있으며 14.28%의 단백질 사료는 비육초기에 급여하였으며, 12.70%의 단백질 수준은 출하 전까지 급여하였다. 대조구는 일반비육우사료(12.39% CP)를 사용하였다. 사양실험은 3개의 농장에서 수행되었다. 농장A에서는 29두의 다산 한우암소를 처리구 그리고 3두를 대조구로 공시하였다. 농장B와 농장C에서는 처리구와 대조구에 각각 8두와 3두 그리고 11두와 4두를 공시하였다. 실험사료들은 총 211일 동안 급여하였고, 처리구의 비육전기사료는 4개월간 급여하였고, 나머지는 비육후기 사료를 급여하였다. 평균일당증체량, 등 지방두께, 등심면적, 도체중, 육량지수, 근내지방, 육색 및 조직감등을 분석하였다. 통계처리는 렌덤효과모형[8]을 사용하였다. 처리의 정적효과는 평균일당 증체량, 등지방두께, 등심면적, 도체중 및 근내지방에서 나타났으며, 육량지수, 육색 및 조직감은 처리구의 부적효과가 나타났다. 모든 분석항목에서 통계적 유의성이 발견되지 않았는데 이것은 농장별 실험결과의 분산이 매우 켰기 때문이다. 그러나 통합적 효과에 있어 평균일당증체량, 등지방두께, 등심면적 및 도체중에 대한 90% 신뢰구간은 정적효과 방향으로 나타났으며, 나머지 분석항목의 90% 신뢰구간은 부적효과의 방향으로 나타났다. 결과적으로 다산 한우암소비육에 있어 비육전기기간의 고단백질 사료 급여는 육생산성 향상 및 육질 개선의 효과를 나타낼 수 있다. Multiparous Hanwoo cull cows have been generally regarded to have poor meat quality compared to young and primiparous Hanwoo in Korea, and there have been few studies attempting to understand various feeding programs for the multiparous Hanwoo cull cow. In this study, the effects of a feeding program consisting of two different diets for multiparous Hanwoo cull cows on meat production and quality were tested in comparison to a commercially used diet. Diets for treatment consisted of two levels of crude protein contents, 14.28% and 12.70% for early fattening and finishing, respectively. For a control, commercially used fattening feed (12.39% crude protein) was used. Feeding trials were performed at three different farms. In farm A, 29 herds of multiparous Hanwoo cull cows were used for the treatment group and 3 herds for the control. In farms B and C, the number of animal herds for treatment and control were 8 vs. 3 and 11 vs. 4 herds, respectively. Experiment diets were fed for an average of 211 days and in treatment, early fattening diet was fed for 4 months and then finishing feed was fed until slaughter. Average daily gains, thickness of back fat, area of Longissimus dorsi, carcass weight, index of carcass weight, intramuscular fat, meat color and texture were analyzed after slaughter. Random effect model [8] was employed in effect analysis. Positive effects of treatment were found in terms of average daily gain, back fat thickness, Longissimus dorsi area, carcass weight, and intramuscular fat. Carcass yield index, meat color and texture showed a negative effect. In this study, significant results were not found in all factors analyzed because the variance between experiment farms was large, however the 90% confidence interval of summary effects of ADG, back fat thickness, Longissimus dorsi area and carcass weight were significant and that of carcass yield index, intramuscular fat, meat color and texture were less so. Conclusively, a high protein diet fed early during the fattening period in multiparous Hanwoo cull cows could have positive effects on meat production.

High-resolution soft x-ray spectroscopic study on amorphous gallium indium zinc oxide thin films

Lee, Mi Ji,Kang, Se Jun,Baik, Jae Yoon,Kim, Ki-jeong,Kim, Hyeong-Do,Shin, Hyun-Joon,Chung, JaeGwan,Lee, Jaecheol,Lee, JaeHak American Institute of Physics 2010 JOURNAL OF APPLIED PHYSICS - Vol.108 No.2

Risk Factors of Postoperative Pancreatic Fistula in Curative Gastric Cancer Surgery

Yu, Hyeong Won,Jung, Do Hyun,Son, Sang-Yong,Lee, Chang Min,Lee, Ju Hee,Ahn, Sang-Hoon,Park, Do Joong,Kim, Hyung-Ho The Korean Gastric Cancer Association 2013 Journal of gastric cancer Vol.13 No.3

Purpose: Postoperative pancreatic fistula is a dreadful complication after gastric cancer surgery. The purpose of this study is to evaluate the actual incidence and risk factors of postoperative pancreatic fistula after curative gastrectomy for gastric cancer. Materials and Methods: A total of 900 patients who underwent gastrectomy for gastric cancer (laparoscopic gastrectomy, 594 patients; open gastrectomy 306 patients) were enrolled between January 2009 and December 2010. Clinical outcomes, including postoperative pancreatic fistula grade based on the International Study Group on Pancreatic Fistula, were investigated. Results: Overall, the postoperative pancreatic fistula rate was 3.3% (30/900) (1.5% in laparoscopic gastrectomy versus 6.9% in open gastrectomy, P<0.001). Patients who underwent D2 lymphadenectomy, total gastrectomy, splenectomy or distal pancreatectomy showed higher postoperative pancreatic fistula rates (4.7%, 13.8%, 13.6%, or 57.1%, respectively, P<0.001). Patients with postoperative pancreatic fistula had higher morbidity (46.7% versus 13.1%, P<0.001), delayed gas out (4.9 days versus 3.8 days, P<0.001), belated diet start (5.8 days versus 3.5 days, P<0.001) and longer postoperative hospital stay (13.7 days versus 6.8 days, P<0.001). On the multivariate analysis, total gastrectomy (odds ratio 9.751, 95% confidence interval: 3.348 to 28.397, P<0.001), distal pancreatectomy (odds ratio 7.637, 95% confidence interval: 1.668 to 34.961, P=0.009) and open gastrectomy (odds ratio 2.934, 95% confidence interval: 1.100 to 7.826, P=0.032) were the independent risk factors of postoperative pancreatic fistula. Conclusions: Laparoscopic gastrectomy had an advantage over open gastrectomy in terms of the lower postoperative pancreatic fistula rate. Total gastrectomy and combined resection, such as distal pancreatectomy, should be performed carefully to minimize postoperative pancreatic fistula in gastric cancer surgery.

초음파 유도하에 자궁내막 소파술로 치료된 자궁내막 골화생

이동운 ( Lee Dong Un ),이해혁 ( Lee Hae Hyeog ),구도형 ( Gu Do Hyeong ),김태희 ( Kim Tae Hui ),심일구 ( Sim Il Gu ),이권해 ( Lee Gwon Hae ),남계현 ( Nam Gye Hyeon ),이임순 ( Lee Im Sun ),권계원 ( Kwon Gye Won ) 대한산부인과학회 2003 Obstetrics & Gynecology Science Vol.46 No.12

The endometrial osseous metaplasia is one of a rare conditions which gynecologist experience clinically. Clinical presentation may include irregular menstration, abnormal uterine bleeding, discharge, dysmenorrhea, pelvic pain, and secondary infertility. H

700℃ 대용량 열저장 시스템 내 Type 316L 스테인리스강 기기의 설계

이형연(Hyeong-Yeon Lee),하도연(Do-Hyun Ha),이제환(Jewhan Lee),어재혁(Jahyuk Eoh) 대한기계학회 2022 대한기계학회 춘추학술대회 Vol.2022 No.3