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마태오,인용하,변승아,이가영,최민지,이승엽,원은정,최현정,최현우,기승정,김수현,신명근,신종희 대한진단검사의학회 2022 Laboratory Medicine Online Vol.12 No.1
Candida auris is a multidrug-resistant fungal pathogen emerging worldwide that is closely related to the C. haemulonii species complex. The ASTA MicroIDSys (ASTA, Korea) is a new matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) system developed for species-level identification of microorganisms. However, prior to the current study, the reference database of ASTA MicroIDSys did not include C. auris. We expanded the database by adding 20 reference strains of C. auris and three closely related species belonging to C. haemulonii species complex. Further, we compared the performance of the ASTA system using an expanded database (coreDB v1.27.02) to that of the Biotyper system (Bruker Daltonics, USA) using 91 well-characterized Candida isolates from a Korean collection. In addition, we evaluated the ability of the ASTA system to differentiate between clade II and non-clade II isolates of C. auris. The results revealed that both ASTA and Biotyper systems accurately identified all 73 C. auris isolates. Of the 18 isolates of closely related species (nine C. pseudohaemulonii, seven C. haemulonii, and two C. haemulonii var. vulnera), the ASTA and Biotyper systems correctly identified 16 and 14 isolates, respectively, to the species level. Neither system misidentified any of the 91 isolates. Cluster analyses of the ASTA spectra distinctly discriminated clade II Korean C. auris isolates from the non-clade II isolates obtained from other countries. Our results show that the ASTA system with an expanded database is a reliable platform for the identification of C. auris and closely related species.
틀이동변이 RHD 711delC에 의한 D-변이형 증례 1건
마태오,유홍비,전수학,조덕,천세종,신명근 대한수혈학회 2019 大韓輸血學會誌 Vol.30 No.2
D antigens are clinically significant, and routine tests on the D antigen requires the inclusion of weak D testing, which is performed using indirect antihuman immunoglobulin methods. On the other hand, exact typing of the D type of an individual can be done more precisely with RHD genotyping, which is a useful tool in cases where the RHD gene is intact. The majority of weak-D or partial-D cases are from single nucleotide changes or hybridization of RHD and RHCE genes. Nevertheless, frameshift mutations can also result in weak or partial-D. The characteristics of a frameshift mutation is typically a change in protein product after a problematic mutation and early termination of transcription, leading into truncated protein products. This paper reports a D-variant case with RHD 711delC along with a review of the relevant literature. In addition, the results of software analysis are reported. (Korean J Blood Transfus 2019;30:168-173)
마태호,김경아,고선영,이연경,신손문 대한소아청소년과학회 2006 Clinical and Experimental Pediatrics (CEP) Vol.49 No.1
목 적 : 극소저출생체중아의 따라잡기 성장과 이에 미치는 요인을 분석하고, 발달검사를 통한 따라잡기 성장과 발달의 연관성을 알아보고자 하였다. 방 법 : 2000년 1월 1일부터 2001년 12월 31일까지 삼성제일병원 신생아집중치료실에 입원하였던 1,500 g 미만의 극소저출생체중아 114명 중 추적관찰이 가능한 76명을 대상으로 하여 의무기록을 통한 후향적조사를 하였다. 한국소아의 표준성장곡선을 사용하여 각 환아의 교정연령 24개월의 체중에 따라 10 백분위수 이상인 군을 따라잡기 성공군으로, 10 백분위수 미만인 군을 실패군으로 정하였고, 각 군 산모 및 환아의 임상적 특성과 경과 등을 조사하였다. 그리고 각 군의 BSID II 점수를 비교하였다.결 과 : 극소저출생체중아의 따라잡기 성장 성공군은 51명, 실패군은 25명이었다. 각 군 산모의 임상적 특성에서는 산전에 부신피질호르몬의 투여가 의미있는 차이를 보였다. 각 군의 임상적 특성에서는 출생체중과 자궁내성장지연이 유의한 차이를 보였으며, 다른 임상적 특성과 경과에서는 유의한 차이가 없었다. 성공군 51명 중 28명, 실패군 25명 중 22명에서 BSID II를 실시하였고, 발달지연은 실패군에서 더 많았지만, 통계상 유의한 차이는 없었다. BSID II 점수의 평균은 성공군에서 운동발달지수와 정신발달지수가 각각 99.54±14.82, 108.18±12.27이었고, 실패군에서는 각각 98.68±15.24, 103.82±15.17로 성공군의 점수가 더 높았지만, 유의한 차이는 없었다. Purpose : The aim of this study was to analyze the results and contributing factors of catch-up growth in very low birth weight infants(VLBWI) at the corrected age of 2 years. In addition, we looked for a relationship between the catch-up growth and the development by the bayley scales of infant development II(BSID II). Methods : A retrospective analysis by evaluating medical records was done for the 76 VLBWI whose follow-up was possible up to a corrected age of 2 years, out of the 114 who had been treated in the neonatal intensive care unit during the January of 2000 to December of 2001 at Samsung Cheil Hospital. Based on the Standard Korean Infant's Growth Curve, the catch-up growth group was defined over the 10th percentile of weight at 2 years as the corrected age and the failed catch-up growth group was defined under the 10th percentile. We investigated the clinical factors and courses of each group and compared the scores of the BSID II. Results : The catch-up growth group of the VLBWI was 51 infants and the failed catch-up growth group was 25 infants. In comparison with maternal clinical factors, use of antenatal steroids was significantly higher in the catch-up growth group. In comparisn with clinical factors and courses of VLBWI, two clinical factors were significantly different between the two groups : birth weight and intrauterine growth retardation(IUGR). Numbers of delayed development were increased in the failed catch-up growth group but statistically significant differences could not be observed. Conclusion : The catch-up growth of the VLBWI was affected by the use of antenatal steroids, birth weight and IUGR. No significant differences regarding neurodevelopmental outcome were observed between the catch-up and failed catch-up growth groups.