Erythrocyte-mediated delivery of dexamethasone in patients with chronic obstructive pulmonary disease.

Abstract:

:Human erythrocytes from ten patients with chronic obstructive pulmonary disease (COPD) were loaded with increasing amounts of dexamethasone 21-phosphate and were re-infused into the original donors. Drug-loaded erythrocytes acted as circulating bioreactors, converting the non-diffusible dexamethasone 21-phosphate into the diffusible dexamethasone. Pharmacokinetic analyses on these patients showed that a single administration of drug-loaded erythrocytes was able to maintain detectable dexamethasone concentrations in blood for up to seven days. This continuous release of dexamethasone was paralleled by the suspension of beta2-agonist and oral corticosteroid treatments by all of the patients. Thus dexamethasone 21-phosphate-loaded erythrocytes are safe carriers for corticosteroid analogues and are a useful alternative to frequent oral or inhaled drugs in elderly patients with COPD.

authors

Rossi L,Serafini S,Cenerini L,Picardi F,Bigi L,Panzani I,Magnani M

doi

10.1042/ba20000087

subject

Has Abstract

pub_date

2001-04-01 00:00:00

pages

85-9

issue

2

eissn

0885-4513

issn

1470-8744

journal_volume

33

pub_type

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