Anti- Aspergillus fumigatus Efficacy of Pentraxin 3 Alone and in Combination with Antifungals

Author:

Gaziano Roberta1,Bozza Silvia1,Bellocchio Silvia1,Perruccio Katia1,Montagnoli Claudia1,Pitzurra Lucia1,Salvatori Giovanni2,De Santis Rita2,Carminati Paolo2,Mantovani Alberto3,Romani Luigina1

Affiliation:

1. Department of Experimental Medicine and Biochemical Sciences, Microbiology Section, University of Perugia, Perugia

2. Sigma-Tau Industrie Farmaceutiche Riunite S.P.A, Pomezia, Rome

3. Department of Immunology and Cell Biology, Mario Negri Institute, Milan, Italy

Abstract

ABSTRACT The collectin pentraxin 3 (PTX3) is an essential component of host resistance to pulmonary aspergillosis. Here we examined the protective effects of administration of PTX3 alone or together with deoxycholate amphotericin B (Fungizone) or liposomal amphotericin B (AmBisome) against invasive aspergillosis in a murine model of allogeneic bone marrow transplantation. PTX3, alone or in combination with the polyenes, was given intranasally or parenterally either before, in concomitance with, or after the intranasal infection with Aspergillus fumigatus conidia. Mice were monitored for resistance to infection and parameters of innate and adaptive T-helper immunity. The results showed the following: (i) complete resistance to infection and reinfection was observed in mice treated with PTX3 alone; (ii) the protective effect of PTX3 was similar or superior to that observed with liposomal amphotericin B or deoxycholate amphotericin B, respectively; (iii) protection was associated with accelerated recovery of lung phagocytic cells and T-helper-1 lymphocytes and concomitant decrease of inflammatory pathology; and (iv) PTX3 potentiated the therapeutic efficacy of suboptimal doses of either antimycotic drug. Together, these data suggest the potential therapeutic use of PTX3 either alone or as an adjunctive therapy in A. fumigatus infections.

Publisher

American Society for Microbiology

Subject

Infectious Diseases,Pharmacology (medical),Pharmacology

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