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相关概念视频

Blood Transfusion01:15

Blood Transfusion

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Blood transfusion is a critical medical procedure that saves lives and treats various medical conditions. It involves transferring blood from a donor to a recipient. This process requires a thorough understanding of the ABO blood group system and its associated antigens and antibodies.
Blood Transfusion Overview
A blood transfusion is a medical procedure used to replace blood lost due to injury, surgery, or to treat conditions such as anemia or cancer. During a transfusion, donor blood is...
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Blood Transfusion and Agglutination02:45

Blood Transfusion and Agglutination

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Blood transfusion is a therapeutic measure to restore the blood volume after extensive blood loss due to an accident or a medical procedure. Blood transfusion involves drawing a certain amount of blood from a suitable donor and infusing it into the recipient.
History
The history of blood transfusion dates back to the 17th century, when early attempts were made in animals. In 1818 James Blundell, a British doctor, performed the first successful human blood transfusion. Later in 1900, Karl...
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The ABO Blood Group01:12

The ABO Blood Group

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The ABO blood group system is a critical element of transfusion medicine, essential for determining blood compatibility in transfusions and organ transplants. It is based on specific antigens, or agglutinogens, present on the surface of red blood cells (RBCs) and corresponding antibodies, or agglutinins, in the blood plasma.
Antigens in the ABO Blood Group System
Antigens are substances that can trigger an immune response, leading to the production of antibodies. In the ABO blood group system,...
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Blood Typing01:10

Blood Typing

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Understanding an individual's blood group is a critical component of transfusion medicine. It ensures compatibility in blood transfusions, organ transplants, and even during pregnancy. Determining these blood groups involves the ABO and Rh blood typing systems, utilizing specific antigens and corresponding anti-sera to identify an individual's blood type.
Antigens are protein molecules that reside on the surface of red blood cells (RBCs). The ABO and Rh blood typing systems target...
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Bone Marrow Sampling and Transplants01:22

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Bone marrow transplant is a potential cure for several diseases, including cancer and specific genetic disorders. Notably, this procedure is applicable for patients suffering from aplastic anemia, certain types of leukemia, severe combined immunodeficiency disease (SCID), Hodgkin's disease, non-Hodgkin's lymphoma, multiple myeloma, thalassemia, sickle-cell disease, and certain cancers.
The transplant begins with high doses of chemotherapy and radiation treatment, which aim to destroy...
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Antigens Protected Functional Red Blood Cells By The Membrane Grafting Of Compact Hyperbranched Polyglycerols
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用于ABO独立血细胞输血的固定酶.

Christina Möller1, Fabian Pohlschröder2, Jan Wesche2

  • 1Department of Biotechnology and Enzyme Catalysis Institute of Biochemistry, University of Greifswald, Felix-Hausdorff-Straße 4, 17487, Greifswald, Germany.

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概括

研究人员开发了一种方法,通过酶去除A和B抗原来制造通用红细胞缩物 (RCC) 和血小板缩物 (PC). 这项创新解决了血液供应方面的挑战,并降低了输血不兼容性风险.

关键词:
生物催化剂的生物催化剂血型抗原是一种抗原.酶固定化 酶固定化甘酸酸盐酸盐酸盐酸盐酸盐酸盐酸盐酸盐酸盐酸盐酸盐酸盐酸盐酸盐酸盐酸盐酸盐酸盐酸盐酸盐酸盐酸盐全面的血液 全面的血液.

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科学领域:

  • 生物技术是生物技术.
  • 血液学 血液学 血液学
  • 酶学 是一种酶学.

背景情况:

  • 由于A和B抗原,ABO兼容性对于输血至关重要.
  • 供体数量的减少和需求的增加使红细胞缩剂 (RCC) 和血小板缩剂 (PC) 的供应受到压力.

研究的目的:

  • 开发一种产生ABO-通用RCC和PC的方法,以克服供应限制.
  • 通过酶去除血液产品中的A和B抗原,同时保持其质量.

主要方法:

  • 使用来自Flavonifractor plautii的酶来酶去除A抗原.
  • 使用Pedobacter panaciterrae和Akkermansia muciniphila的银河酶去除B抗原.
  • 在微粒上固定糖化酶,以便通过输血套过器轻松移除.

主要成果:

  • 在RCC中的B阳性红细胞在48小时内在2-6°C下降到4%以下.
  • 在20-24°C下4小时后,聚合的PC显示B阳性细胞减少了34%,剩余的A阳性血小板数量减少了4%.
  • 该方法有效地产生ABO-通用血液产品,保持质量并减少不兼容性.

结论:

  • 酶性抗原去除是生产通用RCC和PC的可行策略.
  • 固定酶为血液制品中的ABO抗原修饰提供了一种安全的方法.
  • 这种方法提高了血液供应和输血安全.