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배양된 치주인대세포와 치은섬유아세포에서 상이하게 발현된 유전자들의 검토 양상
윤혜정,최미혜,여신일,박진우,최병주,김문규,김정철,서조영,Yoon, Hye-Jeong,Choi, Mi-Hye,Yeo, Shin-II,Park, Jin-Woo,Choi, Byung-Ju,Kim, Moon-Kyu,Kim, Jung-Chul,Suh, Jo-Young 대한치주과학회 2006 Journal of Periodontal & Implant Science Vol.36 No.3
Periodontal ligament(PDL) cells and human gingival fibroblasts(HGFs) play important roles in development, regeneration, normal function, and pathologic alteration. PDL cells and HGFs have the similarity related with general characteristics of fibroblast such as spindle shaped morphology, the presence of vimentin intermediate filament and the synthesis of interstitial collagens and fibronectin. There were many studies about the differences between PDL cells and HGFs, but they were not about whole gene level. In this study, we tried to explain the differences of gene expression profiles between PDL cells and HGFs, and the differences among three individuals by screening gene expression patterns of PDL cells and HGFs, using cDNA microarray. Although there were some variants among three experiments, a set of genes were consistentely and differentially expressed in one cell type. Among 3,063 genes, 49 genes were more highly expressed in PDL cells and 12 genes were more highly expressed in HGFs. The genes related with cell structure and motility were expressed more highly in PDL cells. These are cofilin 1, proteoglycan 1 secretory granule, collagen type I(${\alpha}$ 1), adducin gamma subunit, collagen type III(${\alpha}$ 1), fibronectin, lumican(keratan sulfate proteoglycan), and ${\alpha}$ -smooth muscle actin. Tissue inhibitor of metalloproteinase known as the enzyme controlling extracellular matrix with matrix metalloproteinase is more highly expressed in PDL cells, osteoprotegerin known as osteoclastogenesis inhibitory factor is more highly expressed in HGFs. We performed northern blot to verify cDNA microarray results on selected genes such as tissue inhibitor of metalloproteinase, fibronectin, osteoprogeterin. The result of northern blot analysis showed that each cell expressed the genes in similar pattern with cDNA microarray result. This result indicates that cDNA microarray is a reliable method in screening of gene expression profiles.
윤혜정(Hye-Jung Yoon) 대한치과의사협회 2012 대한치과의사협회지 Vol.50 No.12
White lesions of the oral mucosa are a common clinical finding that often present first to general dentist. Some white lesion may have possibility of malignancy. Leukoplakia is the most common "potentially malignant disorder" of the oral mucosa. Leukoplakia is at present defined as "A white plaque of questionable risk having excluded (other) known disease or disorders that carry no increased risk for cancer.". Therefore, it is important for general dentist to be familiar to clinical differential diagnosis of leukoplakia from the known white lesions such as candidiasis, lichen planus, leukoedema, frictional keratosis, and so on. It is also important to decide whether such lesions require further investigation through the biopsy. As a result of biopsy, the presence of epithelial dysplasia in the leukoplakia is still the strongest predictor of future malignant transformation. In this article, oral white lesions that must be differentiated from potentially malignant disorders or early invasive squamous cell carcinoma will be reviewed together with presenting clinical cases.
윤혜정(Hae Jeong Yoon),정복영(Bok-yeong Jung),김승혜(Seung-Hye Kim),송제선(Je Seon Song),이제호(Jae-ho Lee) Asia association of Disability and Oral health 2010 대한장애인치과학회지 Vol.6 No.1
Cerebral palsy is an umbrella term encompassing a group of non-progressive non-contagious motor conditions that cause physical disability in human development. Motor disorder of cerebral palsy is often accompanied by disturbances of sensation, perception, cognition, communication, behavior and seizure disorder. Disharmony of motor function leads to frequent falling down. Moreover patients have high prevalence of class II malocclusion. Compared to normal patients, the patients with cerebral palsy tends to have high prevalence of recurrent trauma and bruxism which make restoration of the anterior tooth more difficult. This case report is consisted of three cases of cerebral palsy patients who have challenging problems with restoration of anterior teeth.
LC-MS/MS를 이용한 농산물 중 Acynonapyr와 대사산물(AP)의 동시시험법 개발 및 검증
이수정 ( Su Jung Lee ),윤상순 ( Sang Soon Yun ),이한솔 ( Han Sol Lee ),박지수 ( Ji-su Park ),구선영 ( Sun Young Gu ),신혜선 ( Hye-sun Shin ),강성은 ( Sung Eun Kang ),정용현 ( Yong-hyun Jung ),윤혜정 ( Hae Jung Yoon ) 한국환경농학회 2020 한국환경농학회 학술대회집 Vol.2020 No.-
아사이노나피르(Acynonapyr)는 Nippon Soda Co., Ltd에서 개발한 살비제로써 glutamate 수용체를 억제하고, 진드기의 신경전달을 교란시켜 행동이상을 보이는 살충효과가 있다. 특정한 거미 진드기 종(Tetranychus, panonychus)에 선택적으로 영향을 미치며, 과일 나무, 채소 및 차나무 해충 방제에 효과적이다. 국내에서는 잔류물의 정의를 아사이노나피르 및 대사산물 (AP, 3-endo-[2-propoxy-4-(trifluoromethyl)phenoxy]-9- azabicyclo[3.3.1]nonane)의 합으로 규정하여 관리할 예정이며, 잔류허용기준은 설정되어 있지 않다. 국외의 경우 코덱스(Codex), 유럽(EU), 미국 (EPA), 캐나다에서는 미등록 농약임에 따라 기준 및 잔류물의 정의가 설정되어 있지 않다. 일본 (JECRF)의 경우 오렌지 등 0.03-20 mg/kg으로 잔류허용기준이 설정되어 있으며, 농산물 잔류물의 정의는 아사이노나피르 및 대사산물(AP)의 합을 아사이노나피르로 정하여 관리하고 있다. 우리나라에서도 아사이 노나피르 잔류허용기준이 신설될 예정이므로 2020년에 아사이노나피르의 안전관리를 위해 공정시험법을 마련하고자 하였다. 추출용매는 acetonitrile을 사용했고, 정제조건은 d-SPE 방법을 사용하였으며, 분석기기는 LC-MS/MS로 최적 기기조건을 확립하였다. 아사이노나피르의 결정계수(R2)는 0.99 이상으로 높은 직선성을 보여주었고, 대표 농산물 5종(현미, 감자, 대두, 감귤, 고추)에 대한 정량한계는 0.01 mg/kg로 확인되었다. 시험법 검증 결과 회수율은 정량한계의 1배, 10배 및 50배 처리 농도에서 각각 75.2-94.6%, 77.3-104.0%이었고, 상대표준편차(RSD)는 모두 11.2% 이하로 조사되었다. 본 연구는 국제식품규격위원회(CODEX)의 농약 분석법 가이드라인 (CAC/GL 40, 2003)의 잔류농약 분석 기준 및 식품의약품안전평가원의 ‘식품등 시험법 마련 표준 절차에 관한 가이드라인(2016)’에 적합한 수준임을 확인하였고, 향후 공정시험법으로 활용될 예정이다.