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  1. Article: Influence of AS-7 on the storage lesion in young and old circulating erythrocytes.

    Hsieh, Carl / Prabhu, N C Srinivasa / Rajashekaraiah, Vani

    Transfusion and apheresis science : official journal of the World Apheresis Association : official journal of the European Society for Haemapheresis

    2020  Volume 59, Issue 6, Page(s) 102905

    Abstract: Blood and its components are stored to meet the demands of blood transfusion. Erythrocytes undergo progressive modifications during storage known as storage lesions. Storage solutions were developed to improve shelf life and extend red cell viability. ... ...

    Abstract Blood and its components are stored to meet the demands of blood transfusion. Erythrocytes undergo progressive modifications during storage known as storage lesions. Storage solutions were developed to improve shelf life and extend red cell viability. Therefore, the objective of this study is to analyze the effects of AS-7 on young and old erythrocytes during storage. Blood was collected from the blood bank at Kempegowda Institute of Medical Sciences (KIMS) hospital, Bengaluru. Erythrocytes were isolated from whole blood and separated based on its age using Percoll density gradient. The young and old erythrocytes were stored in AS-7 for 35 days and every 5th day, oxidative stress markers - Hemoglobin (Hb), Oxidative Hemolysis, Mechanical Fragility, Sialic Acid, Superoxides, Glucose, Lactate Dehydrogenase (LDH), Glutathione, antioxidant capacity (TAC
    MeSH term(s) Blood Preservation/methods ; Erythrocytes/cytology ; Erythrocytes/metabolism ; Humans ; N-Acetylneuraminic Acid/metabolism ; Oxidative Stress/drug effects
    Chemical Substances N-Acetylneuraminic Acid (GZP2782OP0)
    Language English
    Publishing date 2020-08-03
    Publishing country England
    Document type Journal Article
    ZDB-ID 2046795-3
    ISSN 1878-1683 ; 1473-0502
    ISSN (online) 1878-1683
    ISSN 1473-0502
    DOI 10.1016/j.transci.2020.102905
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Age-Related Modulations in Erythrocytes under Blood Bank Conditions.

    Hsieh, Carl / Prabhu, N C Srinivasa / Rajashekaraiah, Vani

    Transfusion medicine and hemotherapy : offizielles Organ der Deutschen Gesellschaft fur Transfusionsmedizin und Immunhamatologie

    2019  Volume 46, Issue 4, Page(s) 257–266

    Abstract: Background: During storage of erythrocytes, storage lesions are formed that reduce the safety and efficacy of the stored blood. Thus, there is a need to understand the changes that occur during storage. Most studies have focused on storage of a mixed ... ...

    Abstract Background: During storage of erythrocytes, storage lesions are formed that reduce the safety and efficacy of the stored blood. Thus, there is a need to understand the changes that occur during storage. Most studies have focused on storage of a mixed population of erythrocytes. The aim of this study is to analyze the changes in young and old erythrocytes over the course if storage.
    Materials and methods: Blood was collected from the blood bank at the Kempegowda Institute of Medical Sciences (KIMS) Hospital (Bengaluru, India) and stored for 35 days in CPDA-1 at 4°C. Every 5 days, erythrocytes were separated based on the blood's age using a Percoll-BSA gradient. Young and old erythrocytes obtained were used for analysis of the following oxidative stress (OS) markers: hemoglobin (Hb), hemolysis, mechanical fragility, antioxidant enzymes (superoxide dismutase and catalase [CAT]), superoxides, sialic acid, glutamic oxaloacetate transaminase (GOT), glucose, plasma membrane redox system (PMRS), total antioxidant capacity-cupric ion reducing antioxidant capacity assay (TAC<sub>CUPRAC</sub>), lactate dehydrogenase (LDH), lipid peroxidation products (malondialdehyde [MDA] and conjugate dienes), and protein oxidation products (advanced oxidation protein products and protein sulfhydryls).
    Result: Young cells had higher amounts of Hb, sialic acid, GOT, LDH, TAC<sub>CUPRAC</sub>, CAT, and superoxides compared to old cells. Old cells, however, had higher PMRS and MDA levels with respect to young cells.
    Discussion: Young cells could endure OS during storage more efficiently than old cells. In conclusion, the efficacy of stored blood depends on the ratio of young cells in the population. This study highlights the prospects of storing young erythrocytes for a prolonged shelf life of blood.
    Language English
    Publishing date 2019-07-02
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2100848-6
    ISSN 1660-3818 ; 1660-3796
    ISSN (online) 1660-3818
    ISSN 1660-3796
    DOI 10.1159/000501285
    Database MEDical Literature Analysis and Retrieval System OnLINE

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