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인간 제대혈의 CD14+ 단핵구 세포 및 CD34+ 조혈모세포에서 유래된 수지상세포의 특성 비교
정민형 ( Min Hyung Jung ),김용만 ( Yong Man Kim ),송하영 ( Ha Young Song ),김종혁 ( Jong Hyeok Kim ),김영탁 ( Young Tak Kim ),목정은 ( Jung Eun Mok ),남주현 ( Joo Hyun Nam ) 대한산부인과학회 2006 Obstetrics & Gynecology Science Vol.49 No.11
Objective: To compare the morphological, phenotypical, and functional characteristics of dendritic cells (DCs) generated from two precursor cell sources (CD 14+ monocyte and CD34+ hematopoietic stem cell) of human umbilical cord blood (UCB) under identical ex vivo generation conditions and to determine the best cellular source for DCs-based anticancer immunotherapy. Methods: CD14+ monocytes and CD34+ hematopoietic stem cells were isolated from human UCB and induced to differentiate into DCs under identical culture conditions using granulocyte macrophage colony stimulating factor (800 U/mL) and IL-4 (500 U/mL). Then maturation of DCs was induced with IFN-γ (1000 U/mL) and LPS (1 ㎍/mL). Morphology was compared with confocal microscopy and phenotypical analysis was done with FACS. The level of IL-12p70 production was determined with ELISA kit and T cell proliferation capacity was assessed with mixed lymphocyte reaction (MLR). Results: Eight-day-old mature DCs from CD14+ monocytes or CD34+ hematopoietic stem cells had identical morphology. Flow cytometric analysis revealed that CD14+ monocyte-derived DCs (M-DCs) and CD34+ hematopoietic stem cell-derived DCs (CD34-DCs) showed similar enhanced expression of CD80, CD83, and CD86 (P>0.05). The level of IL-12p70 production was significantly higher in mature DCs (8-day-old) than immature DCs (6-day-old) of either source (P<0.05), but it was significantly highly elevated in CD34-DCs (P<0.05). DCs of both precursors showed potent stimulation capacity in MLR, with CD34-DCs having a maximum effect at 1:2 ratio and M-DCs at 1:20 ratio, although CD34-DCs had significantly greater proliferative effects at all ratios (P<0.05). Conclusion: These findings suggest that CD34-DCs may be a more attractive source for DC-based immunotherapy. But because of morphologic, phenotypical, and functional similarities between the two cellular sources, both are good sources for generating DCs and one is not superior to the other. Thus cellular availability could be an important factor in determining DC-generation protocol to be used if all other issues are equal. Further comparative testing for these two precursors is in need.
정민형 ( Jung Min-hyung ),신철식 ( Shin Cheol-shik ),정연종 ( Jeong Yeon-jong ),서정은 ( Seo Jeong-eun ),성주현 ( Seong Joo-hyun ) 한국구조물진단유지관리공학회 2019 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.23 No.2
비탈면 붕괴의 한 요소로 동절기 및 해빙기 과정에서 동결-융해에 따른 풍화, 수축-팽창 등의 영향으로 비탈면 안정성에 영향을 미치는 것으로 알려져 있으며, 실제 국내외에서 해빙기 시기에 비탈면 붕괴사고가 빈번히 발생하고 있다. 본 연구에서는 해빙기 비탈면의 안전 확보를 위하여 해빙기 비탈면 유지관리 방안을 제시하였다. 외관조사 및 자료조사를 통한 상세 점검을 바탕으로 고도화된 위험성 평가 여부를 결정하고, 위험성 평가에서도 위험성이 높다고 판단되는 경우, 전기비저항 등을 통해 위험단면을 선정하여 실시간 모니터링을 경제적으로 실시할 수 있도록 유지관리 프로세스를 계획하였다.
외음부 전정염 증후군 환자 30예의 임상병리적 특성 및 치료에 관한 고찰
정민형 ( Min Hyung Chung ),박정훈 ( Jung Hun Park ),김낙인 ( Nack In Kim ),김봉희 ( Bohng Hee Kim ),이주희 ( Juhie Hee Lee ),허주엽 ( Chu Yeop Huh ) 대한산부인과학회 2002 Obstetrics & Gynecology Science Vol.45 No.12
Objective : This study was performed to evaluate and introduce the clinicopathologic characteristics and treatment modalities of vulvar vestibulitis, a subset of vulvodynia, may cause physical disabilities, phycological or emotional distress, sexual dysfu
도심지 개착식 굴착공사 붕괴사고 및 도로함몰 저감을 위한 우선 관리 요소 결정
성주현,정민형,Seong, Joo-Hyun,Jung, Min-Hyung 한국터널지하공간학회 2017 한국터널지하공간학회논문집 Vol.19 No.3
The collapse accidents during a open ground excavation in urban areas not only lead to human injuries and material damages in the construction site, but also lead to road sinks and damages to the adjacent facilities due to settlement of ground around the construction site. Therefore, during a open ground excavation in the urban areas, it is necessary to thoroughly prepare for prevention of collapse accidents, and consider whole construction stage such as planning, design and construction. In this study, the priorities to be managed mainly were obtained in order to prevent collapse accidents during a open ground excavation. After analyzing results from past accidents cases for open ground excavations, priorities were evaluated regarding collapse-inducing elements using the Delphi technique which is a decision-making method by consensus among experts. As a result, insufficient groundwater treatment, bad geotechnical investigation and instability on construction, etc. were obtained as priorities for prevention of collapse accidents. 도심지 개착식 굴착공사 중 발생하는 붕괴사고는 공사장 내에서의 인명 및 물질적 피해를 불러일으킬 뿐만 아니라, 공사장 주변의 지반침하로 인한 도로함몰 및 시설물 피해를 유발한다. 따라서, 도심지에서 개착식 굴착공사를 수행함에 있어서, 계획, 설계 및 시공의 건설 전체 단계에서 굴착공사 붕괴 방지를 위한 철저한 대비가 필요하다. 본 연구에서는 이와 같은 개착식 굴착공사 중 붕괴사고 예방을 위해, 중점적으로 관리되어야 할 우선 요소 결정 연구를 수행하였다. 먼저, 과거 흙막이 굴착공사의 사고사례 조사결과를 분석하고, 전문가 합의에 의한 의사결정 방법인 델파이 기법을 이용하여 붕괴 유발 요소에 대한 중요도를 산정하였다. 그 결과, 지하수 처리, 지반조사의 부실, 시공상의 불안정 등이 흙막이 공사 붕괴 예방을 위한 중점 관리 요소로 도출되었다.
복강경술식을 이용한 자궁절제술에서 창상 관련 합병증 감소를 위해 시행한 추가적인 질소독제의 효용성 비교
이영민 ( Yeong Min Lee ),김신영 ( Shin Young Kim ),정민형 ( Min Hyung Jung ),이보연 ( Bo Yon Lee ),허주엽 ( Chu Yeop Huh ) 대한산부인과학회 2008 Obstetrics & Gynecology Science Vol.51 No.5
Objectives: To compare the efficacy of additional vaginal dressing disinfectants for reduction of wound-related complications in laparoscopic hysterectomy. Methods: From September 2006 to June 2007, 226 of 243 patients underwent laparoscopic hysterectomy were enrolled. The patients were classified into three groups (no additional disinfectant (n=76), povidone-iodine (n=68), and chlorhexidine (n=82) for disinfectants) and the short term postoperative complications related with wound morbidity were recorded by 2 months out-patient follow up. Results: The mean age of all patients was 46.6±7.6 years old, and the mean BMI (body mass index) was 24.2±3.4, mean operation time was, 137.2±48.0 minutes, and the mean estimated blood loss was 451.8±240.2 ml. There was no significant difference among three groups in their mean age, mean BMI, frequency of vaginal culture (+) before surgery, frequency of wound/stump infection after surgery, frequency of wound disruption, and frequency of fever. The significant difference was shown in mean operation time and mean estimated blood loss but those did not affect frequency of vaginal culture (+) before surgery, frequency of wound/stump infection after surgery, frequency of wound disruption, and frequency of fever. Conclusions: We conclude that the kind of disinfectant for additional vaginal dressing for laparoscopic hysterectomy does not matter deeply in causing short term wound-related complications after the surgery.