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DOI: 10.1055/s-2000-4452
Effekt von Ambroxol auf die Surfactantsekretion und -synthese von isolierten, alveolären Typ-II-Zellen
Publikationsverlauf
Publikationsdatum:
31. Dezember 2000 (online)
Zusammenfassung:
Ein Teil der Wirkung von Ambroxol wird auf eine Stimulation des Surfactantsystems zurückgeführt. Die Untersuchungen, die dem zugrunde liegen, geben eher indirekte Hinweise auf Surfactantsynthese und -sekretion. Ein direkter Nachweis der Stimulation von alveolären Typ II Zellen im Hinblick auf Synthese und Sekretion fehlt.
In dieser Untersuchung wurde eine direkter Effekt von Ambroxol auf die Surfactantsynthese und -sekretion untersucht. Dazu wurde die Freisetzung von markiertem Phosphatidylcholin unter dem Einfluss von Ambroxol in ansteigender Dosierung (10- 8M bis 10- 4M) und mit zunehmender Expositionszeit gemessen. Es fand sich weder mit zunehmender Konzentration noch mit zunehmender Zeit ein signifikanter Effekt des Ambroxol auf die Surfactantsekretion. Als Marker der Surfactantsynthese wurde die Aufnahme von 3H-markiertem Cholin und der Einbau in 3H-Phosphatidylcholin (PC) untersucht. Hier wurden ebenfalls ansteigende Konzentrationen (10- 7M bis 10- 5M) untersucht, und der zelluläre Gehalt an PC über 1, 2, 4, 8, 24 h verfolgt. Zu keinem Zeitpunkt fand sich eine signifikante Stimulation dieses Parameters durch Ambroxol in den getesteten Konzentrationen. Höhere Konzentrationen als die hier getesteten führten zu vermehrter LDH Freisetzung aus den isolierten AT-II-Zellen. Ambroxol, das auch antioxidative und antiinflammatorische Wirkungen besitzt, scheint also keine direkte Wirkung auf isolierte AT-II-Zellen (der Ratte) zu besitzen, wie dies zum Beispiel für die β2-Mimetika zutrifft. Eine spezifische, pharmakologische Möglichkeit der Stimulation des Surfactantsystems gilt es weiterhin zu entwickeln.
Effect of ambroxol on surfactant synthesis and secretion in isolated type II alveolar cells:
The effect of ambroxol is attributed in part to an effect on surfactant synthesis and secretion. Evidence supporting this hypothesis is largely indirect; a direct effect of ambroxol on surfactant synthesis and secretion remains to be demonstrated. In this study a direct effect of ambroxol was evaluated using isolated alveolar type II cells. Secretion of labelled phosphatidylcholine was measured following the addition of increasing concentrations (10- 8M to 10- 4M) of ambroxol to the culture medium for increasing time intervals. There was no significant increase in surfactant secretion with increased ambroxol concentration or prolonged exposure time. Uptake of 3H-choline and synthesis into 3H-phsophatidylcholine was analyzed as an indicator of surfactant synthesis. Again, increasing concentrations of ambroxol (10- 7M to 10- 5M) were followed for 1, 2, 4, 8 and 24 h. There was no significant effect on synthesis at any time point. Concentrations higher than those mentioned here resulted in LDH release from cultured cells. Ambroxol which also has anti-oxidative and anti-inflammatory effects does not exhibit direct stimulatory effects on surfactant synthesis and secretion in isolated (rat) alveolar type II cells as has been demonstrated e. g. for β2-adrenergic stimulation. A specific pharmacologic way to stimulate the surfactant system remains to be developed.
Literatur
- 1 Van Golde L MG, Post M, de Vries A CJ, Batenburg J J. Type II cells isolated from adult and fetal rat lung as a model for studies on the formation of pulmonary surfactant. In: Cosmi EV, Scarpelli EM (Hrsg). Pulmonary surfactant system Elsevier: Amsterdam 1983: 57-72
- 2 Disse B G, Mason R J, Voelker D R. Influence of ambroxol on surfactant lipids of rat alveolar type II cells in primary culture. Eur J Respir Dis. 1987; 71 Suppl 153 288-289
- 3 Dobbs L G. Isolation and culture of alveolar type II cells. Lung Cell Mol Physiol. 1990; 2 L134-L147
- 4 Mason R J. Surfactant secretion. In: Robertson B, Van Golde LMG and Batenburg JJ (Hrsg.). Pulmonary surfactant: from molecular biology to clinical practice Elsevier: Amsterdam 1992: 295-312
- 5 Dobbs L G, Gonzalez R F, Williams M C. An improved method for isolating type II cells in high yield and purity. Am Rev Respir Dis. 1986; 134 141-145
- 6 Wirtz H, Schmidt M. Acute influence of cigarette smoke on secretion of pulmonary surfactant in rat alveolar type II cells in culture. Eur Respir J. 1996; 9 24-32
- 7 Folch J, Lees M, Stanley G HS. A simple method for the isolation and purification of total lipides from animal tissues. J Biol Chem. 1957; 226 497-509
- 8 Fanestil D D, Barrows C H. Aging in the rotifer. J Gerontol. 1965; 20 462-469
- 9 Cerutti P, Kapanci Y. Effects of metabolite VIII of Bromexine (Na872) on type II epithelium of the lung. Respiration. 1979; 37 241-251
- 10 Stanley M W, Henry-Stanley M J, Gajl-Peczalska J, Bitterman P. Hyperplasia of type II pneumocytes in acute lung injury. Am J Clin Pathol. 1992; 97 669-677
- 11 Zavattini G, Leproux B, Daniotti S. Ambroxol. In: Braga PC, Allegra L (Hrsg.). Drugs in bronchial mucology Raven Press Ltd: New York 1989: 262-291
- 12 Felix K, Pairet M, Zimmermann R. The antioxidative activity of the mucoregulatory agents: ambroxol, bromhexine and N-acetyl-L-cysteine. A pulse radiolysis study. Life Sci. 1996; 59 1141-1147
- 13 Gillissen A, Bartling A, Schoen S, Schultze-Werninghaus W G. Antioxidant function of ambroxol in mononuclear and polymorphonuclear cells in vitro. Lung. 1997; 175 235-242
- 14 Gillissen A, Jaworska M, Orth M, Coffiner M, Maes P, App E M, Cantin A M, Schultze-Werninghaus W G. Nacystelyn, a novel lysine salt of N-acetylcysteine, to augment cellular antioxidant defence in vitro. Respir Med. 1997; 91 159-168
- 15 Gillissen A, Scharling B, Jaworska M, Bartling A, Rasche K, Schultze-Werninghaus W G. Oxidant scavenger function of ambroxol in vitro: a comparison with N-acetylsteine. Res Exp Med (Berl). 1997; 196 389-398
- 16 Nowak D, Antczak A, Krol M, Bialasiewicz P, Pietras T. Antioxidant properties of Ambroxol. Free Radic Biol Med. 1994; 16 517-522
- 17 Nowak D, Antczak A, Pietras T, Bialasiewicz P, Krol M. Protective effect of ambroxol against heat- and hydrogen peroxide-induced damage to lung lipids in mice. Eur Respir J. 1994; 7 1629-1634
- 18 Piotrowski W J, Pietras T, Kurmanowska Z, Nowak D, Marczak J, Marks K J, Mazerant P. Effect of paraquat intoxication and ambroxol treatment on hydrogen peroxide production and lipid peroxidation in selected organs of rat. J Appl Toxicol. 1996; 16 501-507
- 19 Suzuki M, Teramoto S, Matsuse T, Ohga E, Katayama H, Fukuchi Y, Ouchi Y. Inhibitory effect of ambroxol on superoxide anion production and generation by murine lung alveolar macrophages. J Asthma. 1998; 35 267-272
- 20 Winsel K. Antioxidative und entzündungshemmende Eigenschaften von Ambroxol. Pneumologie. 1992; 46 461-475
- 21 Post M, Batenburg J J, Schuurmanns E AJM, Oldenborg V, van der Molen A J, van Golde L MG. The perfused rat lung as a model for studies on the formation of surfactant and the effect of ambroxol on this process. Lung. 1983; 161 349-359
- 22 Kapanci Y, Elemer G. Ambroxol and surfactant secretion. Experimental studies on the incorporation of 3H-palmitate into pulmonary surfactant. In: Cosmi ES, Scarpelli EM (Hrsg.). Pulmonary surfactant system Elsevier: Amsterdam 1983: 263-272
- 23 Lachmann B. The effect of ambroxol in newborn and adult animals with surfactant deficiency. In: Cosmi EV, Scarpelli EM (Hrsg.). Pulmonary surfactant system Elsevier: Amsterdam 1983: 237-248
- 24 von Wichert P, Bavendamm U, Teichmann M et al. Increased incorporation of fatty acids into phospholipids of lung and livers of rabbit under the influence of bromhexine and ambroxol. Arch Pharmacol. 1977; 297 269-273
- 25 Prevost M C, Soula G, Douste-Blazy L. Biochemical modifications of pulmonary surfactant after bromhexine derivative injection. Respiration. 1979; 37 215-219
- 26 Heath M F, Jacobson W. The inhibition of lysosomal phospholipase A from rabbit lung by ambroxol, and its consequences for pulmonary surfactant. Lung. 1985; 163 337-344
- 27 Dobbs L G, Mason R J, Williams M C, Benson B J, Sueishi K. Secretion of surfactant by primary cultures of alveolar type II cells isolated from rats. Biochim Biophys Acta. 1982; 713 118-127
- 28 Mason R J, Dobbs L G. Synthesis of phosphatidylcholine and phosphatidylglycerol by alveolar type II cells in primary culture. J Biol Chem. 1980; 255 5101-5107
- 29 Dobbs L G, Williams M C, Brandt A E. Changes in biochemical pattern of lectin binding of alveolar type II cells with time in culture. Biochem Biophys Acta. 1985; 846 155-166
- 30 Dobbs L G, Williams M C, Gonzalez R. Monoclonal antibodies specific to apical surfaces of rat alveolar type I cells bind to surfaces of cultured, but not freshly isolated, type II cells. Biochem Biophys Acta. 1988; 970 146-156
- 31 Mezzetti M, Colombo L, Marini M G, Crusi V, Pierfederici P, Mussini E. A pharmacokinetic study on the pulmonary tropism of ambroxol in patients under thoracic surgery. J Emergency Surg Int Care. 1990; 13 179-185
- 32 Bianchi M, Mantovani A, Erroi A, Dinarello C A, Ghezzi P. Ambroxol inhibits interleukin I and tumor necrosis factor production in human mononuclear cells. Agents Actions. 1990; 31 275-279
- 33 Balibrea-Cantero J L, Arias-Diaz J, Garcia C, Torres-Melero J, Simon C, Rodriguez J M, Vara E. Effect of pentoxifylline on the inhibition of surfactant synthesis induced by TNF-α in human type II pneumocytes. Am J Respir Crit Care Med. 1994; 149 699-706
- 34 Wirtz H RW, Dobbs L G. Calcium mobilization and exocytosis after one mechanical stretch of lung epithelial cells. Science. 1990; 250 1266-1269
Prof. Dr H Wirtz
Medizinische Klinik I und Poliklinik Universität Leipzig
Johannisallee 32 04103 Leipzig
eMail: E-mail: wirtzh@medizin.uni-leipzig.de