Nucleated red blood cells as a novel indicator of CD34 + cell content in umbilical cord blood

Transfusion ◽  
2018 ◽  
Vol 59 (2) ◽  
pp. 681-685
Author(s):  
David Galel ◽  
Clarence Crisostomo ◽  
Jennifer Ortega ◽  
Kirstin Peters ◽  
Sara Neveu ◽  
...  
Keyword(s):  
Cord Blood ◽  
Red Blood Cells ◽  
Umbilical Cord ◽  
Umbilical Cord Blood ◽  
Blood Cells ◽  
Cell Content ◽  
Nucleated Red Blood Cells

scholarly journals Deep learning-based adaptive detection of fetal nucleated red blood cells

2020 ◽  
Author(s):  
Chao Sun ◽  
Ruijie Wang ◽  
Lanbo Zhao ◽  
Lu Han ◽  
Sijia Ma ◽  
...  
Keyword(s):  
Cord Blood ◽  
Red Blood Cells ◽  
Umbilical Cord ◽  
Umbilical Cord Blood ◽  
Blood Cells ◽  
Gradient Centrifugation ◽  
Accurate Method ◽  
Peripheral Blood Cell ◽  
Nucleated Red Blood Cells ◽  
Imaging Characteristics

AbstractAimthis study, we established an artificial intelligence system for rapid identification of fetal nucleated red blood cells (fNRBCs).MethodDensity gradient centrifugation and magnetic-activated cell sorting were used for the separation of fNRBCs from umbilical cord blood. The cell block technique was used for fixation. We proposed a novel preprocessing method based on imaging characteristics of fNRBCs for region of interest (ROI) extraction, which automatically segmented individual cells in peripheral blood cell smears. The discriminant information from ROIs was encoded into a feature vector and pathological diagnosis were provided by the prediction network.ResultsFour umbilical cord blood samples were collected and validated based on a large dataset containing 260 samples. Finally, the dataset was classified into 3,720 and 1,040 slides for training and testing, respectively. In the test set, classifier obtained 98.5% accuracy and 96.5% sensitivity.ConclusionTherefore, this study offers an effective and accurate method for fNRBCs preservation and identification.

scholarly journals Human Leukocyte Antigen and Red Blood Cells Impact Umbilical Cord Blood CD34+ Cell Viability after Thawing

2019 ◽  
Vol 20 (19) ◽  
pp. 4875 ◽  
Author(s):  
Vanegas ◽  
Galindo ◽  
Páez-Gutiérrez ◽  
González-Acero ◽  
Medina-Valderrama ◽  
...  
Keyword(s):  
Human Leukocyte Antigen ◽  
Cell Viability ◽  
Cord Blood ◽  
Red Blood Cells ◽  
Umbilical Cord ◽  
Umbilical Cord Blood ◽  
Blood Cells ◽  
Human Leukocyte ◽  
Hla Typing ◽  
Leukocyte Antigen

Hematopoietic progenitor cell (HPC) transplantation is a treatment option for malignant and nonmalignant diseases. Umbilical cord blood (UCB) is an important HPC source, mainly for pediatric patients. It has been demonstrated that human leukocyte antigen (HLA) matching and cell dose are the most important features impacting clinical outcomes. However, UCB matching is performed using low resolution HLA typing and it has been demonstrated that the unnoticed mismatches negatively impact the transplant. Since we found differences in CD34+ viability after thawing of UCB units matched for two different patients (p = 0.05), we presumed a possible association between CD34+ cell viability and HLA. We performed a multivariate linear model (n = 67), comprising pre-cryopreservation variables and high resolution HLA genotypes separately. We found that pre-cryopreservation red blood cells (RBC), granulocytes, and viable CD34+ cell count significantly impacted CD34+ viability after thawing, along with HLA-B or -C (R2 = 0.95, p = 0.01; R2 = 0.56, p = 0.007, respectively). Although HLA-B*40:02 may have a negative impact on CD34+ cell viability, RBC depletion significantly improves it.

Potential use of autologous umbilical cord blood red blood cells for early transfusion needs of premature infants

Transfusion ◽  
2006 ◽  
Vol 46 (6) ◽  
pp. 1049-1056 ◽  
Author(s):  
Marijke Jansen ◽  
Anneke Brand ◽  
Jeannette S. von Lindern ◽  
Sicco Scherjon ◽  
Frans J. Walther
Keyword(s):  
Cord Blood ◽  
Red Blood Cells ◽  
Umbilical Cord ◽  
Premature Infants ◽  
Umbilical Cord Blood ◽  
Blood Cells ◽  
Potential Use

Performance evaluation of Sysmex XN hematology analyzer in umbilical cord blood: a comparison study with Sysmex XE-2100

2014 ◽  
Vol 52 (12) ◽  
Author(s):  
Hanah Kim ◽  
Mina Hur ◽  
Sang-Gyeu Choi ◽  
Hee-Won Moon ◽  
Yeo-Min Yun ◽  
...  
Keyword(s):  
Cord Blood ◽  
Umbilical Cord ◽  
Umbilical Cord Blood ◽  
Blood Cells ◽  
Complete Blood Count ◽  
White Blood Cells ◽  
Modular System ◽  
Hematopoietic Stem ◽  
Nucleated Red Blood Cells ◽  
Hematology Analyzer

AbstractThe Sysmex XN (XN) modular system (Sysmex, Kobe, Japan) is a new automated hematology analyzer equipped with different principles from its previous version, Sysmex XE-2100. We compared the performances of Sysmex XN and XE-2100 in umbilical cord blood (CB) specimens.In 160 CB specimens, complete blood count (CBC) parameters and white blood cells (WBC) differentials were compared between the two analyzers. Their flagging performances for blasts, abnormal/atypical lymphocytes, immature granulocytes and/or left-shift (IG), and nucleated red blood cells (NRBC) counts were compared with manual counts. For the blast flagging, Q values by Sysmex XN were further compared with manual slide review.Sysmex XN and XE-2100 showed high or very high correlations for most CBC parameters but variable correlations for WBC differentials. Compared with XE-2100, XN showed significantly different flagging performances for blasts, abnormal/atypical lymphocytes, and IG. The flagging efficiency for blasts was significantly better on Sysmex XN than on XE-2100 (85.0% vs. 38.8%): Sysmex XN showed a remarkably increased specificity of blast flag, compromising its sensitivity of blast flag. Among the 24 specimens with blasts (range, 0.5%–1.5%), only one (4.2%) showed a positive Q value.This study highlighted the remarkable differences of flagging performances between Sysmex XN and XE-2100 in CB specimens. The Sysmex XN modular system seems to be a suitable and practical option for the CB specimens used for hematopoietic stem cell transplantation as well as for the specimens from neonates.

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