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Decrease of bone marrow angiogenesis in myeloma patients achieving a remission after chemotherapy.

O Sezer1, K Niemöller, O Kaufmann

  • 1Department of Hematology and Oncology and Institute of Pathology, Universitätsklinikum Charité, Humboldt-Universität zu Berlin, Berlin, Germany. sezer@charite.de

European Journal of Haematology
|May 31, 2001
PubMed
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Chemotherapy significantly reduces bone marrow angiogenesis in multiple myeloma patients, correlating with better remission and longer progression-free survival. This study highlights the impact of angiogenesis in this hematological malignancy.

Area of Science:

  • Hematology
  • Oncology
  • Angiogenesis Research

Background:

  • Angiogenesis is crucial for solid tumor growth but less studied in hematological malignancies.
  • Bone marrow microvessel density (MVD) is a key indicator of angiogenesis.

Purpose of the Study:

  • To evaluate bone marrow microvessel density (MVD) changes before and after chemotherapy in multiple myeloma patients.
  • To correlate MVD changes with treatment response and progression-free survival.

Main Methods:

  • Studied 21 stage III multiple myeloma patients undergoing chemotherapy with autologous stem cell transplantation.
  • Used immunohistochemistry (CD34 staining) on bone marrow biopsies to quantify MVD.
  • Compared pre- and post-treatment MVD, and MVD in responders versus non-responders.

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Main Results:

  • Median MVD decreased from 53.1 vessels/mm² before treatment to 29.3 vessels/mm² after chemotherapy.
  • Post-treatment MVD differed significantly between patients with and without remission (p=0.001).
  • Responders showed a significant MVD decrease; progression-free survival was longer in patients with reduced MVD (P=0.006).

Conclusions:

  • Effective chemotherapy significantly decreases bone marrow angiogenesis in multiple myeloma.
  • Reduced MVD post-chemotherapy correlates with treatment response and improved progression-free survival.
  • This study provides the first evidence of decreased bone marrow angiogenesis following effective chemotherapy in multiple myeloma.