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Respiratory ciliary function in bone marrow recipients.

W Y Au1, J C Ho, A K Lie

  • 1University Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong SAR, China.

Bone Marrow Transplantation
|September 12, 2001
PubMed
Summary
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Bone marrow transplant recipients often have impaired respiratory cilia function, leading to increased infections. This study found significantly lower ciliary beat frequency in BMT patients, especially those with chronic GVHD and bronchiolitis obliterans.

Area of Science:

  • Immunology
  • Pulmonology
  • Cell Biology

Background:

  • Bone marrow transplantation (BMT) recipients frequently experience respiratory issues, including chronic graft-versus-host disease (cGVHD), bronchiolitis obliterans (BO), and recurrent infections.
  • Respiratory cilia are crucial for maintaining lower airway sterility, but their function in BMT recipients remains understudied.

Purpose of the Study:

  • To investigate ciliary beat frequency (CBF) in patients following allogeneic BMT.
  • To determine if CBF is associated with cGVHD, BO, or pulmonary function parameters.

Main Methods:

  • Measured CBF in 36 Chinese patients who underwent allogeneic BMT.
  • Compared CBF between BMT recipients and healthy controls.
  • Correlated CBF with the presence of cGVHD, BO, and pulmonary function tests (FEF, FEV).

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Main Results:

  • BMT recipients exhibited significantly lower CBF compared to controls (P < 0.001).
  • Reduced CBF was more pronounced in patients with cGVHD (P = 0.048) and BO (P = 0.077).
  • CBF showed a significant correlation with forced expiratory flow rate (FEF) (P = 0.024) and forced expiratory volume (FEV) (P = 0.044).

Conclusions:

  • Abnormal ciliary clearance is a common finding in allogeneic BMT recipients.
  • Impaired ciliary function is particularly evident in patients with BO and cGVHD.
  • This dysfunction may contribute to the heightened susceptibility to respiratory infections in BMT survivors.