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Related Experiment Videos

Bone marrow angiogenesis in systemic mast cell disease.

Jin-Young Baek1, Chin-Yang Li, Animesh Pardanani

  • 1Divisions of Hematopathology, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA.

Journal of Hematotherapy & Stem Cell Research
|February 16, 2002
PubMed
Summary

Systemic mast cell disease (SMCD) can involve bone marrow angiogenesis, but this process is not directly linked to mast cells. Increased microvessel density occurred in 62% of patients, independent of mast cell activity.

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Area of Science:

  • Hematology
  • Oncology
  • Immunology

Background:

  • Mast cells are implicated in tumor angiogenesis via cytokine release.
  • The role of mast cells in bone marrow angiogenesis requires further investigation.

Purpose of the Study:

  • To evaluate bone marrow microvessel density in patients with systemic mast cell disease (SMCD).
  • To explore correlations between bone marrow angiogenesis, mast cell cytokine expression, and hematologic status in SMCD.

Main Methods:

  • Semiquantitative measurement of bone marrow microvessel density using CD34 staining.
  • Immunohistochemical analysis of mast cell expression for transforming growth factor-beta and basic fibroblast growth factor.
  • Assessment of correlations with hematologic disorders and mast cell involvement.

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Main Results:

  • Increased microvessel density was observed in 62% of SMCD patients.
  • Bone marrow angiogenesis did not correlate with mast cell cytokine expression or associated hematologic disorders.
  • In patients without hematologic disorders, angiogenesis correlated with abnormal hematopoiesis, not mast cell burden.

Conclusions:

  • Bone marrow angiogenesis is present in a subset of SMCD patients.
  • The pathogenesis of bone marrow angiogenesis in SMCD may not be directly mediated by mast cells.