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Cuzzocrea, S. et al.

S. Cuzzocrea, T. Genovese, E. Mazzon, E. Esposito, C. Muià, M. Abdelrahman, R. Di Paola, P. Bramanti, C. Thiemermann,

Glycogen synthase kinase-3beta inhibition attenuates the development of bleomycin-induced lung injury.

Glycogen synthase kinase-3 (GSK-3) is an ubiquitous serine-threonine protein kinase that participates in a multitude of cellular processes and has recently been implicated in the pathophysiology of a number of diseases. The aim of this study is to investigate the effects of TDZD-8, a potent and selective GSK-3beta inhibitor, on the development of lung injury caused by administration of bleomycin (BLM). Mice subjected to intra-tracheal administration of BLM developed significant lung injury characterized by marked neutrophil infiltration and tissue edema. An increase in immunoreactivity to nitrotyrosine, iNOS, TNF-alpha and IL-1beta was also observed in the lungs of BLM-treated mice. In contrast, administration of BLM-treated mice with TDZD-8 (1 mg/kg daily) significantly reduced (I) the degree of lung injury, (II) the increase in staining (immunohistochemistry) for myeloperoxidase (MPO), nitrotyrosine, iNOS, TNF-alpha and IL-1beta and (III) the degree of apoptosis, as evaluated by Bax and Bcl-2 immunoreactivity and TUNEL staining. Taken together, these results clearly demonstrate treatment with the GSK-3beta inhibitor TDZD-8 reduces the development of lung injury and inflammation induced by BLM in mice.[1]

References

Glycogen synthase kinase-3beta inhibition attenuates the development of bleomycin-induced lung injury. Cuzzocrea, S., Genovese, T., Mazzon, E., Esposito, E., Muià, C., Abdelrahman, M., Di Paola, R., Bramanti, P., Thiemermann, C. Int. J. Immunopathol. Pharmacol (2007) [Pubmed]

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