• 제목/요약/키워드: Red blood cell

검색결과 844건 처리시간 0.027초

개심술시 Cell Saver 를 이용한 자가수혈의 효과 (Effects of Autotransfusion using Cell Saver in Cardiac Surgery)

  • 정경영
    • Journal of Chest Surgery
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    • 제23권2호
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    • pp.260-267
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    • 1990
  • During a eight month period[from December, 1988 to July, 1989], a series of 35 adults undergoing redo-valve replacement or coronary artery bypass grafting was selected to an autotransfusion group[n=10] or a control group[n=25]. The Cell Saver System[Haemonetics Corp., Graintree, Mass] was employed for autotransfusion. With this system, all blood shed in the operative field before and after cardiopulmonary bypass and remained in cardiotomy reservoir after cardiopulmonary bypass was aspirated by means of a locally heparinized collecting system. After the salvaged blood was centrifuged, the resulting red cell concentrate subsequently reinfused. The patients receiving autologous blood required significantly less banked homologous blood than their controls[3213k1020 ml and 506051931 ml, respectively: p=0.001] There were no clinical infections in the autotransfusion group, although 40% of the cultures of processed blood were positive. And there was no apparent intergroup difference of the clinical and the hematologic and hemostatic laboratory findings. We conclude that autotransfusion using cell saver is effective for saving the homologous blood transfusion in cardiac surgery.

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Hemorheological measurements in experimental animals: further consideration of cell size - pore size relations in filtrometry

  • Nemeth, Norbert;Baskurt, Oguz K.;Meiselman, Herbert J.;Furka, Istvan;Miko, Iren
    • Korea-Australia Rheology Journal
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    • 제21권3호
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    • pp.155-160
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    • 2009
  • Micropore filtration of dilute red blood cell (RBC) suspensions is a widely known method for determining red blood cell deformability. Use of this method for cells from various laboratory animal species does require considering the effects of the cell size to pore size ratio and of suspension hematocrit. In general, previous animal studies have utilized 5% hematocrit suspensions and five micron pores, and thus conditions similar to human clinical laboratory practice. However, when used for repeated sampling from small laboratory animals or for parallel multiple samples from different sites in large laboratory animals, the volume of blood sampled and hence the hematocrit of the test suspension may be limited. Our results indicate that hematocrit levels yielding stable values of RBC pore transit time are pore size and species specific: three micron pores = $2{\sim}5%$ for dog and $3{\sim}5%$ for rat; five micron pores $3{\sim}5%$ for dog and $1{\sim}5%$ for rat. An analytical approach using a common expression for calculating transit time is useful for determining the sensitivity of this time to hematocrit alterations and hence to indicate hematocrit levels that may be problematic.

순수적혈구형성부전증 1 례 (A Case of Pure Red Cell Aplasia)

  • 최명숙;이채훈;전창호;김경동;김정숙;현명수
    • Journal of Yeungnam Medical Science
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    • 제5권2호
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    • pp.239-246
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    • 1988
  • 저자들은 diphenylhydantoin의 사용 후 발생하는 것으로 사료되는 용혈성 빈혈과 동반된 순수적혈구형성부전증 1예를 경험하였기에 간단한 문헌고찰과 함께 보고하는 바이다.

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적록사슴에서 뿔 및 경정맥 혈액의 성분비교 (Comparison of Blood Components of the Antler and Jugular Vein in the Red Deer)

  • 이경갑;부태삼
    • 한국임상수의학회지
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    • 제14권2호
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    • pp.254-257
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    • 1997
  • The blood components of not-young (young antler) were examined in the Red Deer. Blood samples were collected from the antler and jugular veins respectively. The hematological and serum chemical values were as follows; 1. RBC count of not-hyul (young antler blood) was significantly higher than that of jugular vein blood (p<0.05). However, fibrinogen concentration of rook hyul was significantly lower than that of jugular vein blood (p<0.01). WBC counts packed cell volume (PCV) and total protein fro) were not significant between nolo-hyul and jugular vein blood. 2. The concentration of phosphorous and magnesium of not-hyul were significantly higher than those of jugular vein blood (p<0.05). Albumin and glutamic oxaloacetic transaminase (GOT) of nolo-hyul were higher than those of jugular vein blood. But globulin and calcium concentration of not-hyul were lower than those of jugular vein blood. Blood urea nitrogen BUN) of rook-hyul was not significant when compared with that of jugular vein blood.

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In vivo와 in vitro에서 김치가 혈액성상과 면역세포배양에 미치는 영향 (The Effects of Kimchi on Hematological and Immunological Parameters in vivo and in vitro)

  • 송영선;김미정;권명자;송영옥;이은경;윤현주
    • 한국식품영양과학회지
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    • 제26권6호
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    • pp.1208-1214
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    • 1997
  • This study was designed to know the effect of kimchi on the hematological and immunological parameters in vivo and in vitro, respectively. To study the effects of kimchi on the hematological parameters, rats(S.D., male) were divided into 4 groups and fed diets containing of 3%, 5% and 10% kimchi or kimchi free diet(control) for 6 weeks. The results of CBC(complete blood cell) tests obtained from the bloods of rates were as follows ; In 10% kimchi group, the level of WBC(white blood cells), RBC(red blood cells), Hgb(hemoglobin), Hct(hematocrit) were increased significantly than those of control group(p<0.05). MCV(mean corpuscular volume), one of the red cell indices, was also increased significantly in the animals fed 10% kimchi(p<0.05). RDW(Red cell distritution width) and PCT(plateletcrit) was lowest in 10% kimchi group(p<0.05). To examine the effects of kimchi on immune cell growth in vitro, three types of mouse immune cells-spleen cells, bone marrow cells, thymus cells-were cultured with extracts of salted Chinese cabbage, fresh kimchi and fermented kimchi(for 1 week) for 12 or 20 days. Control was supplemented with PBS(phosphate buffer saline) excluding kimchi extract. The results of spleen cell, bone marrow cell, and thymus cell cultures showed similar tendency: control medium accelerated death of cells, extracts of salted Chinese cabbage reduced the rate of cell death, and extracts of fresh kimchi and fermented kimchi promoted cell growth. From these results, it could be suggested that kimchi possibly has an effect on the hematopoietic ability and increases immune cell development and growth in vivo.

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광 투사법을 이용한 슬릿 점도계에서의 적혈구 응집성 및 점도 측정에 관한 연구 (Simultaneous measurements of red blood cell aggregation and blood viscosity in a slit rheometry with light transmission analysis)

  • 박명수;구윤희;신세현;서장수
    • 대한기계학회:학술대회논문집
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    • 대한기계학회 2004년도 춘계학술대회
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    • pp.1678-1681
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    • 2004
  • The light-transmission technique has been applied to a slit rheometer for measuring red blood cell aggregation as well as blood viscosity over a range of shear rates. For measurement of blood viscosity and aggregation, instantaneous pressure and transmit-light intensity are measured with time. Using a precision pressure measurement, one can determine the shear stress and shear rate. In addition, a transmitted light through a blood sample indicates degree of RBC aggregation. With abruptly flowing with high shear rate, RBCs rapidly disaggregate and the intensity of the transmitted light becomes low. When continuously flowing with decreasing shear rate, RBCs tend to re-aggregate and the corresponding transmit-intensity gradually increases with time. The light intensity as a degree of RBC aggregation is plotted against shear rate and compared with blood viscosity. The advantages of this design are dual measurement at a time, simplicity, i.e., ease of operation and no moving parts, low cost, short operating time, and the disposable kit which is contacted with blood sample.

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A Genome-wide Association Study of Copy Number Variation in Hematological Parameters in the Korean Population

  • Kim, Ka-Kyung;Cho, Yoon-Shin;Cho, Nam-H.;Shin, Chol;Kim, Jong-Won
    • Genomics & Informatics
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    • 제8권3호
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    • pp.122-130
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    • 2010
  • Abnormal hematological values are associated with various disorders including cancer and cardiovascular, metabolic, infectious, and immune diseases. We report the copy number variations (CNVs) in clinically relevant hematological parameters, including hemoglobin level, red and white blood cell counts, platelet counts, and red blood cell (RBC) volume. We describe CNVs in several loci associated with these hematological parameters in 8,842 samples from Korean population-based studies. The data that we evaluated included four RBC parameters, one platelet parameter, and one associated with total white blood cell (WBC) count, exceeding the genome-wide significance. We show that CNVs in hematological parameters are associated with some loci, different from previously associated loci reported in single nucleotide polymorphism (SNP) association studies.

펄스자기장 자극에 의한 손의 적혈구 형태학적 변화 (Change in Rouleau Formation of Red Blood Cells by Pulse Magnetic Field Stimulus in the Hand)

  • 황도근
    • 한국자기학회지
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    • 제24권1호
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    • pp.28-33
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    • 2014
  • 최대 0.27 T 세기와 0.102 ms 펄스시간을 가지는 자기장 자극시스템을 이용하여 손에 인가한 후에 생혈액 분석을 통해 말초혈관에 흐르는 적혈구의 형태학적 변화를 조사하였다. 펄스자기장 자극 전 피실험자의 적혈구는 10여개 이상씩 서로 붙어있는 연전형성(連錢形成, rouleau formation)이 일어나서 적혈구의 움직임이 느려졌으나, 손에 10분간 자기장 인가한 후에 연전형성이 되었던 적혈구가 대부분 떨어져서 독립적인 움직임을 보이면서 운동이 활발해졌다. 또한 왼쪽 손에 펄스자기장을 10분 자극한 후에 자극받지 않은 오른쪽 손에서 채혈했을 때에도 연전현상이 똑같이 개선되었다. 이는 혈류흐름에 의해 체내에 모든 적혈구의 연전현상이 개선된 것으로 판단할 수 있다.

T subset정량(定量)을 위한 항우적혈구(抗牛赤血球) IgG항체(抗體)의 분리.정제(分離.精製)(I) (Purification of Anti-ox Red Blood Cell IgG Antibody for T subset Assay)

  • 하윤문;이진용;임수덕
    • 대한미생물학회지
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    • 제15권1호
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    • pp.71-75
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    • 1980
  • 사람에 있어서 면역(免疫)담당세포의 하나인 T세포(細胞)는 몇몇 subpoulation으로 나누어지고 있으며 그중 $T_M$$T_G$를 동정(同定)하는 수단으로 사용되는 우적혈구항체(牛赤血球抗體)중에서 우선 순수(純粹) IgG항체(抗體)를 분리(分離) 정제(精製)하였으며, 이 정제(精製)된 IgG항체(抗體)는 표준제품(標準製品)과의 비교실험(比較實驗)에서 $T_G$세포(細胞)의 일치(一致)되는 성적(成績)을 얻을 수 있었다.

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