Long-term leukocyte filtration should be avoided during extracorporeal circulation. 2013

Jiali Tang, and Kaiyu Tao, and Jing Zhou, and Chongwei Zhang, and Lina Gong, and Nanfu Luo, and Lei Du
Department of Anesthesiology and Translational Neuroscience Center, West China Hospital, Sichuan University, 37 Wainan Guoxuexiang, Chengdu, Sichuan 610041, China.

Filtration during extracorporeal circulation (ECC) not only removes but also activates leukocytes; therefore, long-term leukocyte filtration may cause adverse effects. In the present study, we tested this hypothesis by priming ECC with 300 mL of canine blood and examining filtration effects in 3 groups (n = 6 each) during 60 min ECC. In the control group (Group C) blood was filtrated with an arterial filter for 60 min; in long-term (Group L) and short-term (Group S) groups, blood was filtrated with a leukocyte filter for 60 and 5 min. We found that about 90% of leukocytes were removed after 5 min of filtration in both Groups L and S. Although leukocyte count continued to reduce, mean fluorescent intensities of CD11/CD18, free hemoglobin, and neutrophil elastase increased in Group L and were higher than those in Groups C and S at 60 min. Leukocyte rupture, cytoplasmic leakage, and circulating naked nuclei were also found in Group L. The data support our hypothesis that long-term filtration can induce inflammation and lead to leukocyte destruction.

UI MeSH Term Description Entries
D007249 Inflammation A pathological process characterized by injury or destruction of tissues caused by a variety of cytologic and chemical reactions. It is usually manifested by typical signs of pain, heat, redness, swelling, and loss of function. Innate Inflammatory Response,Inflammations,Inflammatory Response, Innate,Innate Inflammatory Responses
D007962 Leukocytes White blood cells. These include granular leukocytes (BASOPHILS; EOSINOPHILS; and NEUTROPHILS) as well as non-granular leukocytes (LYMPHOCYTES and MONOCYTES). Blood Cells, White,Blood Corpuscles, White,White Blood Cells,White Blood Corpuscles,Blood Cell, White,Blood Corpuscle, White,Corpuscle, White Blood,Corpuscles, White Blood,Leukocyte,White Blood Cell,White Blood Corpuscle
D004285 Dogs The domestic dog, Canis familiaris, comprising about 400 breeds, of the carnivore family CANIDAE. They are worldwide in distribution and live in association with people. (Walker's Mammals of the World, 5th ed, p1065) Canis familiaris,Dog
D005112 Extracorporeal Circulation Diversion of blood flow through a circuit located outside the body but continuous with the bodily circulation. Circulation, Extracorporeal,Circulations, Extracorporeal,Extracorporeal Circulations
D005374 Filtration A process of separating particulate matter from a fluid, such as air or a liquid, by passing the fluid carrier through a medium that will not pass the particulates. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed) Filtrations
D006454 Hemoglobins The oxygen-carrying proteins of ERYTHROCYTES. They are found in all vertebrates and some invertebrates. The number of globin subunits in the hemoglobin quaternary structure differs between species. Structures range from monomeric to a variety of multimeric arrangements. Eryhem,Ferrous Hemoglobin,Hemoglobin,Hemoglobin, Ferrous
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D047589 Leukocyte Reduction Procedures The removal of LEUKOCYTES from BLOOD to reduce BLOOD TRANSFUSION reactions and lower the chance of transmitting VIRUSES. This may be performed by FILTRATION or by CYTAPHERESIS. Leukocyte Depletion Procedures,Leukocyte Reduction Filtration,Leukocyte Removal Procedures,Depletion Procedure, Leukocyte,Depletion Procedures, Leukocyte,Filtration, Leukocyte Reduction,Filtrations, Leukocyte Reduction,Leukocyte Depletion Procedure,Leukocyte Reduction Filtrations,Leukocyte Reduction Procedure,Leukocyte Removal Procedure,Procedure, Leukocyte Depletion,Procedure, Leukocyte Reduction,Procedure, Leukocyte Removal,Procedures, Leukocyte Depletion,Procedures, Leukocyte Reduction,Procedures, Leukocyte Removal,Reduction Filtration, Leukocyte,Reduction Filtrations, Leukocyte,Reduction Procedure, Leukocyte,Reduction Procedures, Leukocyte,Removal Procedure, Leukocyte,Removal Procedures, Leukocyte
D018821 CD18 Antigens Cell-surface glycoprotein beta-chains that are non-covalently linked to specific alpha-chains of the CD11 family of leukocyte-adhesion molecules (RECEPTORS, LEUKOCYTE-ADHESION). A defect in the gene encoding CD18 causes LEUKOCYTE-ADHESION DEFICIENCY SYNDROME. Antigens, CD18,Integrin beta2,CD18 Antigen,beta2 Integrin,p150,95 beta-Subunit,Integrin, beta2,beta-Subunit, p150,95,beta2, Integrin,p150,95 beta Subunit
D018845 CD11 Antigens A group of three different integrin alpha chains (CD11a, CD11b, CD11c) that are associated with an invariant integrin beta-2 chain (CD18 ANTIGENS). The three resulting leukocyte-adhesion molecules (RECEPTORS, LEUKOCYTE ADHESION) are LYMPHOCYTE FUNCTION-ASSOCIATED ANTIGEN-1; MACROPHAGE-1 ANTIGEN; and ANTIGEN, P150,95. Antigens, CD11,CD11 Antigen

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