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치아우식증 수복용 복합레진의 개발과 치아 적합성에 관한 연구 제 3 편 : 각종 용액내에서의 표면경도 변화와 세포독성에 관한 연구
최유진,조한국,민병순 大韓齒科器材學會 1992 대한치과재료학회지 Vol.19 No.2
This studies were planned to evaluate the cytotoxicity of cured experimental composite resin using a cell culture method, and the hardness changes of it stored in various aqueous acids and ethanol with considerations that solubility of resin surfaces will occure the decrease of hardness should be related with toxicity occured by elucited components. Cytotoxicity of experimental resins were tested by agar overlay methods, and some solutions in which disc type resin specimens will be stored were prepared by dilution of ethanol or acids into distilled water. The microhardness of experimental and commercial dental restorative composite materials exposed to various chemicals were measured with micro Vicker's hardness tester. Following conclusions were drawn : 1. KCR-22, experimental composite resins prepared in this study exhibited the same degree of cytotoxicity with commercial products. 2. The intensity of cytotoxicity decreased after incorporation of filler to BIS-GMA based resins. 3. The hardness numbers decreased dramatically once the composite had been immersed in ethanol solutions, however any of acidic solutions did not show the decrease of VHN. 4. The incorporation of fillers to BIS-GMA based resins which showed the double increased VHN than unfilled resins. 5. Surface hardness were increased rapidly in saline compared to it in air.
이진호,허진국,나종천,김의석,이혜경,신보문,김석호,고행일 대한감염학회 2004 감염과 화학요법 Vol.36 No.4
비장티푸스 살모넬라증에 의한 장열과 장천공은 매우 드물다 저자들은 방어기전의 손상이 없는 건강한 성인에서 비장티푸스성 D군 살모넬라 장열에 동반된 장천공이 발생한 예를 경험하였기에 문헌 고찰과 함께 보고하는 바이다. The case of enteric fever and bowel perforation caused by nontyphoidal Salmonella spp. is extremely rare. We report a case of a 28-year-old man who suffered from enteric fever with complicated a small bowel perforation, which is a known complication of S. typhi and S. paratyphi infections. The culprit later proved to be nontyphoidal group D Salmonella spp. in our case.
급결제 및 혼화제 종류가 숏크리트 내구성에 미치는 영향에 관한 연구
백신원,권소진,이영수,김의성,신용석 한국안전학회 2003 한국안전학회지 Vol.18 No.3
Concrete and shotcrete should withstand the conditions for which they have been designed, without deterioration, over a period of years. But concrete and shotcrete are being deteriorated according to aging by internal and external causes. Recently, many studies on the durability of concrete have been conducted. But the durability of shotcrete is rarely studied. So, in this study, chloride ion penetration test, freeze and thaw test, neutralization test were conducted to examine the durability characteristics of shotcrete with several accelerator and chemical admixture types. These results indicate that shotcrete with alkali free accelerator and with superplasticizer are durable. Therefore, the present study provides a firm base to make high performance shotcrete.
조용재,김승범,진동규,서의교,김상진 대한척추신경외과학회 2004 Neurospine Vol.1 No.1
Objectives: Symptoms arising from spinal cord tumor are often insidious in onset and nonspecific in nature. To make the subtle initial signs and symptoms of these tumors more apparent to clinicians, we retrospectively analyzed the data of spinal cord tumor patients who were misdiagnosed as degenerative spine disease. Methods: We reviewed history, symptom, sign, radiological study, and pathologic diagnosis of 19 spinal cord tumor patients who had been operated as degenerative spine disease, especially duration and description of symptoms and sign before an accurate diagnosis was made. Results: Average duration of delay before an accurate diagnosis was made was 178.4 days(range: 23~303). Common symptom and signs on neurologic examination included aggravation of pain(8 cases; 47.1 %), and neurologic decline(9 cases; 52.9%) The misdiagnosis included a herniated lumbar disc(16 cases; 94.1%), lumbar stenosis(1 case; 5.9%). Inappropriate treatment for these misdiagnoses included 5 percutaneous lazer discectomies, 9 discectomies, 3 chemonucleolysis, 2 posterior lumbar interbody fusions with cages. Conclusion: When a patient has symptoms that appear to be out of the ordinary, surgeons should suspect other spinal disease including the spinal cord tumor.
Case Report : Idiopathic Multiple Eruptive Milia Occurred in Unusual Sites
( Eu Jin Cho ),( Sang Hyun Cho ),( Jeong Deuk Lee ) 대한피부과학회 2010 Annals of Dermatology Vol.22 No.4
Milia are small, white, benign keratinous cysts that are frequently encountered. Multiple eruptive milia are rare, and are characterized by the development of milia that are more extensive in number and distribution than would be expected in primary milia. We report a case of a 19-year-old girl with tiny, white papules in her axillae and on her abdomen with a review of the relevant literature. (Ann Dermatol 22(4) 465~467, 2010)
Case Report : Breast Cancer Cutaneous Metastasis at Core Needle Biopsy Site
( Eu Jin Cho ),( Min Ho Kim ),( Sang Hee Cha ),( Sang Hyun Cho ),( Se Jeong Oh ),( Jeong Deuk Lee ) 대한피부과학회 2010 Annals of Dermatology Vol.22 No.2
Cutaneous metastasis from breast cancer can occur by direct invasion, lymphatic and vascular spread as well as iatrogenic implantation. Metastasis that occurs by iatrogenic implantation after needle biopsy is very rare but the potential risk must be considered. In this report, we describe a case of breast cancer cutaneous metastasis that occurred by iatrogenic implantation following core needle biopsy. A 53-year-old woman presented with a 1×1 cm sized erythematous nodule at the biopsy site after breast conserving surgery for primary cancer. Histopathological findings confirmed cutaneous metastasis. The possibility of this consequence must be considered when performing needle biopsies. (Ann Dermatol 22(2) 238~240, 2010)
Immune-enhancing effects of Protaetia brevitarsis seulensis larvae extracts on RAW264.7 macrophages
Eu-Jin Ban,김봉선,최라영,김인우,서민철,황재삼,이준하 한국잠사학회 2022 International Journal of Industrial Entomology Vol.45 No.2
Protaetia brevitarsis seulensis larva is well-known as an edible insect. The present study aimed to explore the immune-enhancing effect of 30% ethanol extract of Protaetia brevitarsis seulensis larvae (PBE) in RAW264.7 macrophage cells. PBE were not cytotoxic to RAW264.7 cells and nitric oxide production increased on PBE treatment in a dose-dependent manner. Furthermore, PBE significantly promoted the expression of immune-related mediators (iNOS and COX-2) and cytokines (TNF-α, IL-6, and IL-1β) and the phosphorylation of MAPKs (ERK, p38, and JNK). Taken together, the immune-enhancing effects of 30% ethanol extract of PBE in vitro were identified. These findings can be used as data for the development of edible insect-based functional foods that improve immune function.