경피적관상동맥확장술 도중 발생한 관상동막파열과 대동맥박리 급성페색증을 경피적방법으로 치료한 1예

이내희,조윤행 순천향의학연구소 2004 Journal of Soonchunhyang Medical Science Vol.10 No.2

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심환좌심실기능부전을 동반한 만성신부전환자에서 완전폐색관상동맥의 경피적관상동맥확장술

이내희,조윤행 순천향의학연구소 2004 Journal of Soonchunhyang Medical Science Vol.10 No.2

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하악 전치부에 양측성으로 발생한 과잉치의 치험례

정내정,김정욱,이상훈 대한소아치과학회 2001 大韓小兒齒科學會誌 Vol.28 No.1

소아치과에 내원한 환아 중에서 치아의 수에 따른 이상을 많이 관찰할 수 있는데 그 중의 하나가 과잉치이다. 과잉치는 정상 치판 (dental lamina)의 과도한 증식의 결과로 발생되며 유치열에서 0.3~0.8%, 영구치열에서는 1.0~3.5%의 발생빈도를 보인다. 2 : 1로 남자에게 호발하고 9:1로 상악에 호발하며 구치부보다 전치부에 많이 발생한다. 가장 호발하는 것은 상악 정중 과잉치로 상악 중절치 사이에 위치하며 하악 전치부에서는 2%로 낮은 빈도를 보인다. 본 증례는 파노라마사진 촬영 결과 하악 좌우측 유중절치의 선천적 결손과 4개의 영구 절치외에 2개의 과잉치가전치부에 관찰되어 발치와 교정치료를 통해 양호한 결과를 얻게 되어 보고하는 바이다. Supernumerary tooth is one of the abnormalities in tooth number. Supernumerary tooth result from excessive proliferation of dental lamina and incidence reports identify a range of 0.3~0.8% in primary dentition, 1,0~3.5% in permanent dentition with males being affected twice as frequently as females, maxilla nine times as frequently as mandible. The incidence is more in anterior tooth region than in posterior region. The most common supernumerary tooth is the mesiodens, which located between maxillary central incisors. The occurrence is very rare in the incisor region of mandible and the reports on incidence is 2%. In this case, there were two supernumerary teeth in the mandibular region and we could acquire normal alignment of mandibular incisors by extraction and orthodontic treatment

산업폐수 슬럿지를 이용한 경량골재 개발에 관한 연구

고영민,이내우,최재욱,우희철,신학기 한국산업안전학회 2002 한국안전학회지 Vol.17 No.1

Among the disposal techniques of inorganic wastewater sludges from industries, most of sludges were dealed with buring underground inefficiently. But we have tried to recycle the resources that exhausted inorganic sludges were properly blended to certain ratioes to make lightweight aggregate, that means manufacturing of it can be possible through blending of various components, drying, sintering, cooling and crushing to certain sizes that are needed by consumers. As disposal method of inorganic wastewater sludge is changed to environmentally fraternative method, this method could be very useful to make lightweight aggregates for decoration of building and the other so many purposes of those usages. That could be economically useful due to expected income for buring costs of ordinary disposal method from industries and sales income after manufacturing it. The second important profit is saving foreign currency from purchasing self-developed lightweight aggregate instead of importing expensive foreign product. This product will be also very impressive to user because of the fraternative lightweight to be composed of apatite structure that is important part of human body.

솔-젤법에 의한 Nb_2O_5-Fe_2O_3 혼합산화물의 제조 및 산 특성조사

정석조,양희정,권재범,이내우,우희철 釜慶大學校 2000 釜慶大學校 論文集 Vol.5 No.-

In this study, some of results from a study conducted on the preparation of niobium coated hematite particles to be used as a catalyst are presented.α-Fe_2O_3 (hematite) particles obtained by aging an acidic solution of ferric(Ⅲ) ions at high temperature were first prepared as core particles and synthesised by hydrolysis at high temperature with layers of amorphous niobium pentaoxide (Nb_2O_5) deposited by the hydrolysis of niobium pentachloride. The effects of varying molecular ratio of Nb/Fe (10/1, 5/1, 1/2, 1/5, 1/10) were studied. The synthesised particles were characterized for their physical and chemical properties using XRD, SEM, TPD, BET etc. The process of the surface coating showed heterocoagulation rather than surface nucleation and growth. A preliminary investigation of the acidic characterization and specific surface area of the synthesised particles showed that these particles can achieve an acidic characteristic changed and enhanced specific surface area of that of pure niobia and α-Fe_2O_3 prepared here.

미세혈관 협심증 환자의 임상상 및 지표에 관한 연구

박상호,온영근,김현정,이태훈,길효욱,김현건,박수진,송해정,한대희,방덕원,신원용,이내희,김성구,권영주 순천향의학연구소 2003 Journal of Soonchunhyang Medical Science Vol.9 No.1

Background : Microvascular angina or syndrom X is heterogenous and encompasses different pathogenetic entities. Several studies suggest that microvascular angina have good prognosis and occurs predominantly in postmenopausal women. Lipoprotein (a), total cholesterol, LDL-cholesterol, HDL-cholesterol, triglyceride, homocystein, CRP and fibrinogen are the independent risk factor of acute coronary syndrome and are the chief underlying cause of atherosclerosis. We investigated clinical characteristics and markers in patients with microvascular angina. Methods : We studies 23 patients diagnosed with microvascular angina and 16 control group with negative treadmill exercise test and no significant coronary angiogram. We investigated clinical characteristics in patients group and evaluated symptom during a follow-up period of 4.2± 2.5 month. Exercise time in treadmill exercise test was compared between patients and control group. We assessed the level of markers, such as lipoprotein (a), total cholesterol, LDL-cholesterol, HDL-cholesterol, triglyceride, homocystein, CRP and ESR in two groups. Results : There is no difference in age between two groups. Patients group had a tendency to increase in female, hypertension, DM, and smoking history, but there was no statistical significance difference. Exercise duration time was significantly decreased in patients with microvascular angina (p<0,05). Serum lipoprotein (a), total cholesterol, LDL-cholesterol, HDL-cholestrol, Triglyceride, ESR, Fibrinogen and Homocystein value were no significant difference between microvascular angina and control group. Only CRP was significantly high in patients with microvascular angina (p<0.05). Conclusion : There was no statistical significance difference in age, sex, hypertension, DM and smoking history between two groups but patients group had a tendency to increase the prevalence in hypertension, DM and smoking history, female. Also, Symptom improvement and disappearance in follow-up was presented in 11 patients of 19(57.9%). Exercise tolerance was worse in patients group than control group. CRP value was significantly higher in patients group than control group. There was no statistical significance difference in lipoprotein (a), total cholesterol, LDL-cholesterol, HDL-cholesterol, triglyceride, homocystein, ESR and Fibrinogen between two groups.

관동맥연축의 진단을 위한 Ergonovine Echocardiography의 안전성 및 임상적 유용성

송재관,박성욱,강덕현,조구영,나득영,이내희,이철환,홍명기,김재중,박승정 대한순환기학회 2000 Korean Circulation Journal Vol.30 No.8

Vessel perforation, aortic dissection and acute thrombotic occlusion during percutaneous coronary intervention which could be overcomed by Percutaneously

Lee, Nae-Hee,Cho, Yoon-Hang 순천향의학연구소 2004 Journal of Soonchunhyang Medical Science Vol.10 No.2

경피적관상동맥확장술은 상대적으로 안전한 시술이나 비록 협착병소가 단순병변일지라도 부작용의 위험성을 항상 내포한다. 저자들은 완전폐쇄를 동반한 다혈관 질환의 경피적관상동맥확장술도중 동시다발적으로 생긴 합병증을 수술없이 경피적 방법으로 치료하여 만족할만한 결과를 얻었기에 문헌고찰과 함께 이에 보고하는 바이다.

보조생식술(ART)치료를 받은 환자들에서 자궁근종이 임신에 미치는 영향

이우식,이정노,박찬,이숙환,박원식,남윤성,최동희,정미경,조용선,이학천,윤내영,곽인평,한세열,윤태기,차광열 대한산부인과학회 2000 Obstetrics & Gynecology Science Vol.43 No.12

목적 : 본 연구는 장막하근종, 근육층내의 근종, 또는 점막하 근종등의 출현이 보조생식술후 임신율과 착상율에 어떠한 영향을 미치는가를 보기 위해 시행되었다. 연구방법 : 1998년 1월 1일 부터 1998년 11월 30일 까지 본원에서 보조생식술(ART)을 시행받은 불임환자들 중 양극단의 연령을 제외한 26-45세 사이의 환자들을 대상으로 하였으며, 자궁근종이 진단된 환자들의 278예와 근종이 없는 환자들의 1180예를 비교하였다. 결과 : 이 연령범위내 전체적인 비교에서는 대조군(비근종군)과 근종군에서의 임신율이 각각 41.78%, 31.65%, 그리고 착상율은 각각 15.7%, 11.48%로 통계적으로 유의하게 근종군에서 낮았다. 그러나 평균연령이 대조군(33.1세)에서 보다 근종군(35.5세)에서 유의하게 높음을 알게 되었고, 이에 따라서 연령군들(26-30, 31-35, 36-4, 41-45)에 따른 근종군과 대조군을 각각 비교하였다. 그 결과 동일 연령군에서 근종군(장막하 근종SS, 근육층내 근종IM)과 대조군, 그리고 근종의 그룹들(SS, IM)간의 임신율과 착상율의 비교에서는 서로간에 유의한 차이를 볼 수 없었다. 그리고 점막하 근종그룹의 경우는 통계적 비교를 하기에는 그 예와 수가 너무 적어 결과를 알 수 없었다. 결론 : 일반적으로 근종군에서 상대적으로 낮은 임신율을 보고한 여러 논문에서와 달리, 본 연구에서는 동일한 각각의 연령군에서의 근종군과 대조군간의 임신율과 착상율의 차이가 없었다. 또한 근종의 위치에 따른 그룹별 임신율 및 착상율의 비교에서도 유의한 차이가 없음을 보였는데 이것은 근종이 근육층을 어느정도의 기준치 이상으로 침범했을 때에만 IM으로 분류한 국외의 일부 보고와 달리 근육층을 조금이라도 침범하면 IM군으로 분류한 본 연구에서의 차이 때문일 것으로 생각되며, 장막하 근종그룹과 근육층내 근종그룹의 분류 기준을 달리한다면 다른 결과를 보일 수도 있으리라 여겨진다. 또한, 근종이 임신에 미치는 영향이 다양함을 고려할 때, 근종의 크기 및 위치에 따른 SS군과 IM군 등의 체계적 분류 후 이에 따르는 전향적 연구가 진행된다면 임신에 대한 근종의 영향평가에 많은 도움이 될 것으로 본다. Objective : The purpose of this study was to examine whether the uterine leiomyomas [subserosal(SS), intramural(IM), submucosal(SM)] influence on the pregnancy rate(PR) and implantation rate(IR) of ART program. Methods : This study was done by the review of medical records of 1458 ART cycles from Jan. 1 of 1998 to Nov. 30 of 1998 at Infertility Medical Center, CHA General Hospital. We compared the PR and IR between 278 cycles of myoma group and 1180 cycles of control(non-myoma) group. Results : The mean age of patients with myomas was significantly higher than that of control group. Accordingly, we set the age range(24 - 46yrs) and divided it into four parts(26-30, 31-35, 36-40, 41-45) that did not show the significant difference in PR and IR. As a result, there were no significant differences of PR and IR among control, SS and IM within same age range. (We didn't know the result in SM myoma group because the number of SM myoma cases were very small.) Conclusion : To the contrary of our expectation, there was no significant difference in PR and IR between control and myoma groups. On the other hand, the result of no significant difference in PR and IR between myoma groups may will show different result if we apply different classification in categorizing SS and IM myomas.

Neurite Outgrowth on Nanocomposite Scaffolds Synthesized from PLGA and Carboxylated Carbon Nanotubes

Lee, Hyun Jung,Yoon, Ok Ja,Kim, Do Hee,Jang, Yeong Mi,Kim, Hyun Woo,Lee, Won Bok,Lee, Nae-Eung,Kim, Sung Su WILEY-VCH Verlag 2009 Advanced engineering materials Vol.11 No.12

<P>Carbon nanotubes (CNTs) have been suggested as suitable materials for biomedical applications, especially in the neural area. It is essential not only to investigate the biocompatibility of CNTs with the neural system but also to determine proper methods for applying CNTs to neuronal growth. This work represents the first application of CNTs by electrospun poly(D,L-lactic-co-glycolic acid) (PLGA) scaffolds for a neural system. We synthesized electrospun nanocomposites of PLGA and single-walled carbon nanotubes functionalized by carboxylic acid groups (c-SWNTs), and investigated neurite outgrowth from SH-SY5Y cells on these nanocomposites as compared to that on fibrous PLGA alone. Cells on our PLGA/c-SWNT nanocomposite showed significantly enhanced mitochondrial function and neurite outgrowth compared to cells on PLGA alone. We concluded that c-SWNTs incorporated into fibrous PLGA scaffolds exerted a positive role on the health of neural cells.</P> <B>Graphic Abstract</B> <P>Carbon nanotubes (CNTs) have distinctive characteristics such as high conductivity which could help the promotion of neuronal function. Electrospun nanocomposites of poly(D,L-lactic-co-glycolic acid) (PLGA) and CNTs were synthesized, and neurite outgrowth and mitochondrial function of human neuroblastoma cells were investigated on these nanocomposites and compared with that on fibrous PLGA alone. The results showed that CNTs incorporated into fibrous PLGA scaffolds exerted a positive role on the health of neural cells. <img src='wiley_img_2010/14381656-2009-11-12-ADEM200900144-content.gif' alt='wiley_img_2010/14381656-2009-11-12-ADEM200900144-content'> </P>