• Journal of Nutrition and Health
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• 제35권3호
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• pp.322-331
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• 2002

본 연구는 정상만기분만 임신부 (30명)와 그들의 신생아를 대상으로 임신부와 비타민$B_{6}$ 섭취양상과 모체와 신생아 제대혈장 및 태반조직내의 비타민$B_{6}$ 농도를 측정하고 이들 농도와 임신결과와의 상관성을 조사하며, 모체에서 태아로 비타민$B_{6}$가 이동될 때, 태반의 역할을 규명하고자 하였다. 임신부의 평균 연령과 임신 전 체중 및 신장은 각각 25.9세, 53.8kg 및 161 cm 였으며, 임신 전 체중 및 신장은 각각 25.9세, 53.8 kg 및 161cm 였으며, 임신 전 BMI는 20.7kg/$m^2$로 정상 범위였다. 수축기와 이완기 평균 혈압은 122.5 mmHg 와 75.2mmHg의 결과로 안정적인 수준이었으며 헤모글로빈 농도와 헤마토크리트치는 12.1g/dl와 36.1%로 양호하였다. 연구대상자 중 93.3%에 해당하는 임신부가 영양보충제를 복용했으며 이 중 85.7%가 엽산과 철분이 포함된 빈혈 치료제를 이용한 것으로 조사되었다. 영양보충제의 평균 복용기간은 16.3주였다. 임신부가 1일 평균 열량 섭취량은 2189.5kcal로 권장량의 93.2%였으며, 단백질은 79.3g(113.3%)으로 권장량을 상회하였다. 비타민 B$_{6}$의 평균 섭취량은 권장량은 91.4%인 1.7mg이었고, 비타민 $B_{6}$의 평균 섭취량은 권장량은 91.4%인 1.7mg이었고, 비타민 $B_{6}$ 영양밀도와 단백질 g 당 섭취량은 각각 0.8와 0.02mg으로 양호한 결과였다. 그러나, 비타민$B_{6}$의 주된 공급식품이 곡류 및 전분류 (50%)와 야채 및 과일류 (33%)로 식물성 식품이 대부분이었다. 임신 말 모체 혈장과 신생아 제대혈장의 PLP 농도는 각각 16.7$\pm$4.1 nmol/l와 61.3$\pm$19.8 nmol/l로 제대혈장의 PLP 농도가 유의적으로 높았으며, 태반조직의 PLP 농도는 898.6$\pm$159.2ng/g으로 혈장의 PLP 농도에 비해 매우 높은 값을 보였다. 모체와 태반조직 및 신생아 제대혈장간 PLP 농도의 상관성을 조사한 결과, 모체 혈장과 태반 조직간 (p<0.0001), 태반 조직과 신생아 제대혈장간 (p<0.05), 모체 혈 장과 제대혈장간(p<0.05) 유의적인 양의 상관관계가 있었다.

• Clinics in Shoulder and Elbow
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• 제15권2호
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• pp.65-72
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• 2012

목적: 세가지 기원의 줄기 세포 분화능과 면역표현형을 평가하고자 하였다. 대상 및 방법: 견봉하 점액낭과 골수, 탯줄 혈액 세 개의 군에서 세포를 채취하였다. 견봉하 점액낭과 골수는 견관절 수술 환자군에게 임상적 동의 하에 수술중 채취하였다. 각각의 채취된 세포 및 탯줄 혈액에 대하여 계대 배양을 시행하여 신경 분화군, 지방 분화군, 골 분화군을 평가하였으며 세포 표면 항체를 밝히기 위해 유동세포분석법을 이용하였다. 결과: 견봉하 점액낭 유래 세포에서는 신경분화와 지방 분화는 8예 모두 (100%)에서, 골분화는 8례 중 5예 (62.5%)에서 성공할 수 있었으며 골수 유래 세포의 경우 신경 및 지방 분화 유도한 6례 및 5예 모두 (100%) 분화에 성공하였으나 골분화 유도는 5예 중 4예 (80%)에서 얻을 수 있었다. 반면 탯줄 유래 세포 분화 연구의 경우 신경 분화 유도 67례 중 65예 (97%)에서 지방 분화 연구 54예 중 29예 (53.7%)에서 골 분화 연구 57예 중 39예 (68.4%)에서 성공할 수 있었다. 결론: 탯줄 유래 줄기세포의 분화능과 비교하였을 때 견봉하 점액낭 및 골수 유래 줄기세포의 분화능이 우수함을 알 수 있으며 이는 향후 세포 치료에 있어서 안정성 있는 치료 제공자가 될 수 있을 것으로 보이며 향후 생체 실험 연구의 참고 자료로서도 가치가 있을 것으로 보인다.

• Clinical and Experimental Pediatrics
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• 제55권7호
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• pp.219-223
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• 2012

Since the first umbilical cord blood transplantation (CBT) in 1998, cord blood (CB) has now become one of the most commonly used sources of hematopoietic stem cells for transplantation. CBT has advantages of easy procurement, no risk to donor, low risk of transmitting infections, immediate availability and immune tolerance allowing successful transplantation despite human leukocyte antigen disparity. Several studies have shown that the number of cells transplanted is the most important factor for engraftment in CBT, and it limits the wide use of CB in adult patients. New strategies for facilitating engraftment and reducing transplantation-related mortality are ongoing in the field of CBT and include the use of a reduced-intensity conditioning regimen, double-unit CBT, ex vivo expansion of CB, and co-transplantation of CB and mesenchymal stem cells. Recently, the results of two international studies with large sample sizes showed that CB is an acceptable alternative source of hematopoietic stem cells for adult recipients who lack human leukocyte antigen-matched adult donors. Along with the intensive researches, development in banking process of CB will amplify the use of CB and offer the chance for cure in more patients.

• 대한약리학회:학술대회논문집
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• 대한약리학회 2006년도 58th Annual Meeting of The Korean Society of Pharmacology
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• pp.67.2-67.2
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• 2006

• 한국수정란이식학회:학술대회논문집
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• 한국수정란이식학회 2003년도 제3회 발생공학 국제심포지움 및 학술대회
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• pp.78-78
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• 2003

• The Korean Journal of Physiology and Pharmacology
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• 제11권3호
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• pp.129-133
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• 2007

There are growing evidences suggesting a pivotal role of oxidative stress in the pathophysiology of preeclampsia. We investigated oxidative stress in the rat model of preeclampsia, and in clinical cases. Pregnant female rats were injected intraperitoneally with deoxycorticosterone acetate (DOCA) and given 0.9% saline as drinking water during their pregnancy. We assessed plasma $F_2-isoprostane(8-iso-PGF_{2{\alpha})$ and malondialdehyde (MDA) in a rat model, and the same markers in the plasma of maternal blood and fetal cord blood in pregnant women with preclampsia. Blood samples from the umbilical arteries and veins were collected separately. The concentrations of MDA were increased in the preeclampsia groups of animal and humans, compared with the control group; it was significantly increased in the umbilical artery and vein of the preeclampsia group. The concentrations of $F_2-isoprostane$ were elevated in the preeclampsia groups of animal and humans, compared with the control group, and the increase in $F_2-isoprostane$ concentration was prominent in the umbilical vein than umbilical artery of the preeclampsia group. Therefore, it appears that the placenta has an important role in the pathophysiology of preeclampsia, and the $F_2-isoprostane$ of the umbilical vein may serve as a relatively reliable marker for ischemic/hypoxic injury to the fetus during the perinatal period.

• Molecules and Cells
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• 제24권3호
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• pp.343-350
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• 2007

Mesenchymal stem/progenitor cells (MPCs) were isolated from porcine umbilical cord blood (UCB) and their morphology, proliferation, cell cycle status, cell-surface antigen profile and expression of hematopoietic cytokines were characterized. Their capacity to differentiate in vitro into osteocytes, adipocytes and chondrocytes was also evaluated. Primary cultures of adherent porcine MPCs (pMPCs) exhibited a typical fibroblast-like morphology with significant renewal capacity and proliferative ability. Subsequent robust cell growth was indicated by the high percentage of quiescent (G0/G1) cells. The cells expressed the mesenchymal surface markers, CD29, CD49b and CD105, but not the hematopoietic markers, CD45 and CD133 and synthesized hematopoietic cytokines. Over 21 days of induction, the cells differentiated into osteocytes adipocytes and chondrocytes. The expression of lineage specific genes was gradually upregulated during osteogenesis, adipogenesis and chondrogenesis. We conclude that porcine umbilical cord blood contains a population of MPCs capable of self-renewal and of differentiating in vitro into three classical mesenchymal lineages.

• Asian-Australasian Journal of Animal Sciences
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• 제26권4호
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• pp.588-595
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• 2013

Mesenchymal stem cells (MSCs) are often known to have a therapeutic potential in the cell-mediated repair for fatal or incurable diseases. In this study, canine umbilical cord MSCs (cUC-MSCs) were isolated from umbilical cord matrix (n = 3) and subjected to proliferative culture for 5 consecutive passages. The cells at each passage were characterized for multipotent MSC properties such as proliferation kinetics, expression patterns of MSC surface markers and self-renewal associated markers, and chondrogenic differentiation. In results, the proliferation of the cells as determined by the cumulative population doubling level was observed at its peak on passage 3 and stopped after passage 5, whereas cell doubling time dramatically increased after passage 4. Expression of MSC surface markers (CD44, CD54, CD61, CD80, CD90 and Flk-1), molecule (HMGA2) and pluripotent markers (sox2, nanog) associated with self-renewal was negatively correlated with the number of passages. However, MSC surface marker (CD105) and pluripotent marker (Oct3/4) decreased with increasing the number of subpassage. cUC-MSCs at passage 1 to 5 underwent chondrogenesis under specific culture conditions, but percentage of chondrogenic differentiation decreased with increasing the number of subpassage. Collectively, the present study suggested that sequential subpassage could affect multipotent properties of cUC-MSCs and needs to be addressed before clinical applications.

• Molecules and Cells
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• 제22권1호
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• pp.36-43
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• 2006

Mesenchymal stem cells (MSCs) are promising candidates for cell therapy and tissue engineering, but their application has been impeded by lack of knowledge of their core biological properties. In order to identify MSC-specific proteins, the hydrophobic protein fraction was individually prepared from two different umbilical cord blood (UCB)-derived MSC populations; these were then subjected to two-dimensional (2D) gel electrophoresis and peptide mass fingerprinting matrix-assisted laser desorption/ionization (MALDI)-time of flight (TOF)-mass spectrometry (MS). Although the 2D gel patterns differed somewhat between the two samples, computer-assisted image analysis identified shared protein spots. 35 spots were reliably identified corresponding to 32 different proteins, many of which were chaperones. Based on their primary sub-cellular locations the proteins could be grouped into 6 categories: extracellular, cell surface, endoplasmic reticular, mitochondrial, cytoplasmic and cytoskeletal proteins. This map of the water-insoluble proteome may provide valuable insights into the biology of the cell surface and other compartments of human MSCs.

• Korean Journal of Acupuncture
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• 제19권1호
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• pp.1-6
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• 2002

It was proposed that the substance of Kyungrak is a new anatomic-histological system in the living body and entirely different either from the nervous system or blood and lyphatic vessels. This system is covering the whole body, regulating and coordinating the biological processes that lie at the bottom of the vital activity. One of the substance of Kyungrak is acublast. The aim of this study was to isolate and culture the acublast from human placenta or blood of umbilical cord. It was found that particular cell organism isolate from placenta and cultured with RPMI 1640 contaning 10% FBS and hormones was grown for four weeks. Although this organism was different from blood cells morphologically, biochemical study of the organism is required to identify as the acublast.