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Related Experiment Videos

Steroid safety: the endocrinologist's view.

A Grossman1

  • 1Department of Endocrinology, St Bartholomew's Hospital, London, UK.

International Journal of Clinical Practice. Supplement
|May 27, 1999
PubMed
Summary
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Hydrofluoroalkane beclomethasone dipropionate (HFA-BDP) improves lung delivery for asthma control. This enhanced delivery reduces systemic effects and HPA axis suppression compared to older inhalants.

Area of Science:

  • Pharmacology
  • Respiratory Medicine
  • Drug Delivery Systems

Background:

  • Inhaled glucocorticoids (GCS) are recommended for asthma management.
  • High doses of GCS can lead to systemic side effects like HPA axis suppression, reduced bone mass, growth inhibition, and skin thinning.
  • Systemic drug load is influenced by inhaler dose, lung vs. gut delivery, and first-pass metabolism.

Purpose of the Study:

  • To evaluate the efficacy and safety profile of hydrofluoroalkane beclomethasone dipropionate (HFA-BDP) in asthma control.
  • To assess the impact of HFA-BDP's improved lung delivery on systemic absorption and hypothalamic-pituitary-adrenal (HPA) axis suppression.
  • To compare HFA-BDP with chlorofluorocarbon beclomethasone dipropionate (CFC-BDP).

Main Methods:

  • Utilized an extra-fine aerosol formulation (Qvar) of HFA-BDP.

Related Experiment Videos

  • Focused on improving lung delivery efficiency.
  • Assessed HPA axis suppression and asthma control within recommended dosage ranges.

    • Main Results:

    • HFA-BDP demonstrated improved lung delivery.
    • Clinically significant HPA axis suppression was not observed with HFA-BDP within the recommended dose range.
    • HFA-BDP showed comparable HPA suppression to CFC-BDP at equal doses.
    • Lower doses of HFA-BDP were effective for asthma control.

    Conclusions:

    • HFA-BDP offers improved lung delivery, enhancing asthma control.
    • The enhanced delivery of HFA-BDP minimizes systemic side effects, including HPA axis suppression.
    • HFA-BDP represents an effective and safer alternative for inhaled corticosteroid therapy in asthma.