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Antimicrobial Agents and Chemotherapy, November 2004, p. 4414-4421, Vol. 48, No. 11
0066-4804/04/$08.00+0     DOI: 10.1128/AAC.48.11.4414-4421.2004
Copyright © 2004, American Society for Microbiology. All Rights Reserved.

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

Roberta Gaziano,1 Silvia Bozza,1 Silvia Bellocchio,1 Katia Perruccio,1 Claudia Montagnoli,1 Lucia Pitzurra,1 Giovanni Salvatori,2 Rita De Santis,2 Paolo Carminati,2 Alberto Mantovani,3 and Luigina Romani1*

Department of Experimental Medicine and Biochemical Sciences, Microbiology Section, University of Perugia, Perugia,1 Sigma-Tau Industrie Farmaceutiche Riunite S.P.A, Pomezia, Rome,2 Department of Immunology and Cell Biology, Mario Negri Institute, Milan, Italy3

Received 15 April 2004/ Returned for modification 18 June 2004/ Accepted 6 July 2004

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.

* Corresponding author. Mailing address: Department of Experimental Medicine and Biochemical Sciences—Microbiology Section, University of Perugia, Via del Giochetto, 06122 Perugia, Italy. Phone and fax: 039-075-585-7411. E-mail: lromani{at}unipg.it.

Antimicrobial Agents and Chemotherapy, November 2004, p. 4414-4421, Vol. 48, No. 11
0066-4804/04/$08.00+0     DOI: 10.1128/AAC.48.11.4414-4421.2004
Copyright © 2004, American Society for Microbiology. All Rights Reserved.



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