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Titolo:
Pharmacological similarities and differences between beta(2)-agonists
Autore:
Lotvall, J;
Indirizzi:
Univ Gothenburg, Lung Pharmacol Grp, Dept Resp Med & Allergol, SE-41346 Gothenburg, Sweden Univ Gothenburg Gothenburg Sweden SE-41346 , SE-41346 Gothenburg, Sweden
Titolo Testata:
RESPIRATORY MEDICINE
, volume: 95, anno: 2001, supplemento:, B
pagine: S7 - S11
SICI:
0954-6111(200108)95:<S7:PSADBB>2.0.ZU;2-C
Fonte:
ISI
Lingua:
ENG
Soggetto:
ASTHMATIC-PATIENTS; HEALTHY-SUBJECTS; FORMOTEROL; SALMETEROL; SALBUTAMOL; POTENCY; TURBUHALER(R); TOLERABILITY; DURATION; ONSET;
Keywords:
formoterol; pharmacology; asthma; beta-agonist;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Life Sciences
Citazioni:
15
Recensione:
Indirizzi per estratti:
Indirizzo: Lotvall, J Univ Gothenburg, Lung Pharmacol Grp, Dept Resp Med & Allergol, Guldhedsgatan 10A, SE-41346 Gothenburg, Sweden Univ Gothenburg Guldhedsgatan 10A Gothenburg Sweden SE-41346 n
Citazione:
J. Lotvall, "Pharmacological similarities and differences between beta(2)-agonists", RESP MED, 95, 2001, pp. S7-S11

Abstract

Formoterol and salmeterol are both long-acting bronchodilators that are effective in the treatment of asthma. However, some differences exist in their pharmacology that are reflected in their clinical profiles, Formoterol has a rapid onset of action, whereas salmeterol causes bronchodilation in a somewhat slower manner. However, both of these drugs are long-acting. After single doses clear effects are maintained for 12 h after inhalation, and with high doses effects are observed even at 24 h. Differences between the maximal effects of both drugs are also a consequence of their pharmacologicalproperties. Thus. formoterol has higher intrinsic activity than salmeterol. which means that it is a full agonist, whereas salmeterol is a partial agonist on the beta (2)-receptor, Physicochemical properties of the drugs mayexplain the differences in onset and duration of action. Adequate water solubility and moderate lipophilicity of formoterol ensures rapid diffusion to the beta (2)-receptor on the smooth muscle and rapid bronchodilating activity Salmeterol, on the other hand, may diffuse more slowly to the beta (2)-receptor because of its high lipophilicity, explaining the slower onset ofaction, Unlike salbutamol, which is hydrophilic and has a rapid onset and short duration of action, both formoterol and salmeterol possess adequate lipophilic properties to remain in the airway tissues as a depot in close vicinity to the beta (2)-receptor, explaining their long duration of effect. The long duration of salmeterol has also been suggested to depend on air anchored binding within the beta (2)-receptor (1). The pharmacological evidence for a rapid onset of action of formoterol, but long duration of effect, is supported by several clinical studies. The fast onset of bronchodilationand high intrinsic activity of formoterol therefore suggest that it can beused for relief treatment in patients with asthma if they are concomitantly treated with inhaled glucocorticoids. (C) 2001 Harcourt Publishers Ltd.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 19/01/20 alle ore 14:27:47