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신생아 가사의 신경학적 예후에 대한 혈중 효소들의 예측도
김기혁,김두산,홍성진,오명호,심재건 건국대학교 의과학연구소 1999 건국의과학학술지 Vol.9 No.-
Perinatal asphyxia is one of the most important factors contributing to neonatal morbidity and mortality. However, no clear-cut parameters exist which enable an early identification of neonates who are at risk to develop brain damage. We measured creatine kinase(CK), CK isoenzyme, AST, ALT, LDH in full term asphyxiated(n=35) and healthy(n=39) newborns at 6-10 hours after birth to establish the values of these enzymes in the retrospective diagnosis of asphyxia and if serum levels of these enzymes correlated with the abnormalities of neurosonography or auditory evoked potential. The asphyxiated newborns had significantly increased serum activities of CK-BB(93.5±160.8 IU/L) and CK-BB%(11.1±12.4%) compare to controls(39.2±37.2 IU/L, 3.9±3.4%). However, there were no significant differences in the enzyme activities between normal and abnormal groups of neurosonography or auditory evoked potential. It is concluded that elevated CK-BB and CK-BB% are reliable indicator of the neonatal asphyxia. But the predictive value of specific enzymes for the development of neurologic disorders is not clear. Prospective long-term follow up studies are necessary to evaluate the predictive value of enzyme activities for the neurologic outcome.
호주의 유전자변형생물체(Genetically Modified Organisms) 안정성 심사절차 및 유전자변형식품의 표시제도
김태산,김영미,손성한,김용환,박용환 한국국제농업개발학회 2002 韓國國際農業開發學會誌 Vol.14 No.1
1. 호주는 GMO의 실험 및 상업화를 규제하는 신법 "유전자기술에 관한 법(Gene Technology Act 2000)을 제정 운영중임 2. GMO를 관리 감독하기 위하여 보건후생성산하에 유전자기술 감독국(Office of the Gene Technology Regulator)이 신설됨 3. GMO를 취급(dealings)형태에 따라서 면제(exemption), 위험이 매우적은 취급(notifiable low risk dealing), 면허(licensing), 등록(register)의 4가지로 분류하여 감독함 4. GM식품의 안전성 심사는 호ㆍ뉴식품청(Australia New Zealand Food Authority, ANZFA)에서 관장하며 호주식품 강령 기준 18(Standard A18 of the Australian Food Standards Code)이 근거 법임 5. ANZFA에서는 제초제 저항성 콩, 옥수수, 면화, 감자, 카놀라 등 6작물 12종의 GM작물에 대하여 식품안정성 확인을 완료함 6. 호주에서는 2001년 12월 7일부터 유전자변형식품의 의무 표시제를 시행하고 있으며 비의도적 혼입 허용치는 1%로 설정함 As Australia's new national gene technology regulatory system began on 21 June 2001, the Office of the Gene Technology Regulator (OGTR) was newly established to regulate GMO related research and GM products throughout the nation. "Gene Technology Act 2000" is the statutory basis the new regulatory system. The OGTR is within the Commonwealth Department of Health and Aged Care, responsible for overseeing the gene technology research and development including the GMO field trials across Australia. For the regulation of genetically modified food, the Australia New Zealand Food Authority(ANZFA) is responsible for developing and reviewing national food standards. All foods available for sale in Australia and New Zealand must comply with the relevant national food standards. ANZFA also responsible for carrying out safety assessments of GM foods on behalf of the Commonwealth, State and Territory Governments of Australia and the Government of New Zealand. The ANZFA's safety assessment process for GM foods is based on concepts and principles that have been developed through international organizations such as the World Health Organization(WHO) and the Food and Agriculture Organization(FAO) and the Organization for Economic Co-operation and Development(OECD). Mandatory labelling of GM foods containing either introduced DNA or protein in the final food came into effect on 7 December, 2001.
채성산,김병규 대전대학교 기초과학연구소 1998 自然科學 Vol.9 No.2
본 연구는 p-변량 자료의 구조를 파악하고, 관련이 있는 변수들을 p보다 적은q-차원(p≥q)으로 축소하였을 경우, 자료에 존재하는 군집수의 예측에 어떤 영향이 있는지 비교 분석하였다. q-차원으로 축소시, 주성분인자분석을 사용하였다. Cluster analysis is a primitive technique in which no assumptions are made concerning the data structure. A method predicting the number of cluster by using dimensional reduction is suggested with Rand's(1971) C? k=1,2 …, n-1, statistic. The principal factor analysis is used to reduce original p-variables into new q-variables(p≥q). simulation is conducted to compare the suggested method.
San Seong,Yang Jae Kim,Ju Young Kim,Jin Hae Lee,Hyun Sup Oh,Soon Hyun Kim,Oh Woong Kwon,Yong Sung You 한국망막학회 2018 Journal of Retina Vol.3 No.2
Purpose: To determine the diurnal variation in choroidal thickness and choriocapillaris flow measured by optical coherence tomography (OCT) and optical coherence tomography angiography (OCTA) Methods: This study was a prospective study of 15 normal, young volunteers (30 eyes) who underwent OCT and OCTA examination 5 times a day at 2-hour intervals. Choroidal and choriocapillaris thicknesses were measured with the enhanced depth imaging mode of OCT. The area of flow was measured in 1-, 3-, and 6-mm-diameter areas centered at the fovea and analyzed with the split-spectrum amplitude- decorrelation angiography algorithm of OCTA. Choroidal and choriocapillaris thicknesses and flows were analyzed independently by two vitreoretinal specialists. Results: Choroidal thickness showed a significant diurnal variation. The maximum thickness was 311.31 μm at 9 a.m., and the minimum thickness was 266.75 μm at 5 p.m. (p < 0.001). In contrast, the mean choriocapillaris thickness was 15.14 μm, and remained relatively constant without a significant diurnal variation (p = 0.694). The mean choriocapillaris flow area was 0.45 mm2 (p = 0.238) in a 1 mm area, 4.22 mm2 (p = 0.230) in a 3-mm diameter area, and 16.94 mm2 (p = 0.062) in a 6-mm diameter area. No diurnal variation was observed. Conclusions: Despite significant diurnal variation in choroidal thickness, choriocapillaris thickness and flow remained relatively constant over time.
Novel Findings of Polypoidal Choroidal Vasculopathy via Optical Coherence Tomography Angiography
San Seong,Hun Goo Choo,Yang Jae Kim,Ju Young Kim,Jin Hae Lee,Hyun Sup Oh,Yong Sung You,Soon Hyun Kim,Oh Woong Kwon 대한안과학회 2019 Korean Journal of Ophthalmology Vol.33 No.1
Purpose: To introduce novel findings of polypoidal choroidal vasculopathy (PCV) via optical coherence tomographyangiography (OCTA)Methods: This study is a retrospective chart review of 16 patients (16 eyes) with PCV. OCTA (Avanti RTVue XR)findings were evaluated and selected for analysis after agreement by two retina specialists . Results: Twenty one polyps in 16 eyes (16 patients) with PCV were included in this study. The mean patientage was 67 years (13 men and three women). The shape of polypoidal lesions on OCTA at initial were halo(five polyps), rosette (seven polyps), and vascular network (nine polyps). Eight months after anti-vascular endothelialgrowth factor treatment, in a total of four eyes, seven polyps could be followed up completely, thetwo halo type polypoidal lesions changed to rosette and vascular network type. The lesions of three rosetteand two vascular network type lesions did not change in shape. In addition, the size of the polypoidal lesions(one among two halo types, two among three rosette types, and two among two vascular network types) decreased,but one halo type did not change and one rosette type increased in size on OCTA. Conclusions: En-face OCTA enabled us to categorize novel types of PCV with polypoidal lesions.