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Surface marker abnormalities in myelodysplastic syndromes

M T Elghetany1

  • 1Department of Pathology, University of Texas Medical Branch, Galveston 77555-0743, USA. m.tarek.elghetany@utmb.edu

Haematologica
|February 9, 1999
PubMed
Summary

Surface antigen abnormalities in myelodysplastic syndromes (MDS) impact cell function and disease severity. Abnormalities in markers like CD11b, CD13, CD33, CD34, and HLA-DR have prognostic significance for MDS progression and survival.

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Area of Science:

  • Hematology
  • Immunology
  • Cell Biology

Background:

  • Myelodysplastic syndromes (MDS) are clonal stem cell disorders characterized by abnormal mature and maturing cells.
  • Surface antigens on immune cells like granulocytes and monocytes play crucial roles in cell interaction and function.
  • Abnormalities in surface antigens may indicate more severe disease stages and defective cell function in MDS.

Purpose of the Study:

  • To review and synthesize the current understanding of surface antigen abnormalities in myelodysplastic syndromes (MDS).
  • To explore the diagnostic and prognostic significance of these surface antigen changes.
  • To identify challenges and inconsistencies in current research methodologies and suggest avenues for standardization.

Main Methods:

  • Comprehensive literature search of English articles published since 1966 using Medline.
  • Focus on bone marrow changes and surface antigen expression in MDS.
  • Analysis of studies reporting abnormal expression of surface antigens, including intensity and percentage of positive cells.

Main Results:

  • Abnormal surface antigen expression (increased, decreased, or lineage-aberrant) is frequently observed in MDS.
  • Specific markers like CD11b, CD13, CD33, CD34, and HLA-DR show prognostic significance.
  • Low CD11b expression correlates with higher risk of acute myeloid leukemia (AML) evolution and shorter survival.

Conclusions:

  • Surface marker studies in MDS show potential as diagnostic and prognostic tools.
  • Discrepancies in literature highlight the need for standardized methodologies in sample preparation and data interpretation.
  • Mechanisms like defective granulopoiesis and intracellular storage pools contribute to aberrant antigen expression.

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