Pharmacological iron-chelation as an assisted nutritional immunity strategy against Piscirickettsia salmonis infection
| Autor: | Madelaine Mejías, Dinka Mandakovic, José M. Yáñez, Jurij Wacyk, Javiera Pérez-Valenzuela, Daniela Ortiz, Liliana Montt, Mario Caruffo, Francisca Vera-Tamargo, Rodrigo Pulgar, Pablo Salgado, Ignacio Chávez-Báez |
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| Přispěvatelé: | Universidad Santo Tomas, Universidad Andrés Bello [Santiago] (UNAB), Universidad Mayor [Santiago de Chile], Universidad de Chile = University of Chile [Santiago] (UCHILE) |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
0301 basic medicine
Piscirickettsia Piscirickettsia salmonis medicine.drug_class Iron 030106 microbiology Antibiotics Salmo salar Biology Microbiology Cell Line 03 medical and health sciences chemistry.chemical_compound Fish Diseases In vivo Immunity Sepsis Deferiprone (DFP) medicine Animals Epizootic Bacterial disease [SDV.BA.MVSA]Life Sciences [q-bio]/Animal biology/Veterinary medicine and animal Health lcsh:Veterinary medicine General Veterinary deferiprone (DFP) medicine.disease Antimicrobial infection 3. Good health Host-directed therapy (HDT) Iron-chelator 030104 developmental biology chemistry iron-chelator Oncorhynchus mykiss Piscirickettsiaceae Infections lcsh:SF600-1100 Animal Nutritional Physiological Phenomena Infection Deferiprone host-directed therapy (HDT) Research Article |
| Zdroj: | Veterinary Research Veterinary Research, Vol 51, Iss 1, Pp 1-12 (2020) Veterinary Research, BioMed Central, 2020, 51 (1), pp.134. ⟨10.1186/s13567-020-00845-2⟩ |
| ISSN: | 1297-9716 0928-4249 |
| DOI: | 10.1186/s13567-020-00845-2⟩ |
| Popis: | Salmonid Rickettsial Septicaemia (SRS), caused by Piscirickettsia salmonis, is a severe bacterial disease in the Chilean salmon farming industry. Vaccines and antibiotics are the current strategies to fight SRS; however, the high frequency of new epizootic events confirms the need to develop new strategies to combat this disease. An innovative opportunity is perturbing the host pathways used by the microorganisms to replicate inside host cells through host-directed antimicrobial drugs (HDAD). Iron is a critical nutrient for P. salmonis infection; hence, the use of iron-chelators becomes an excellent alternative to be used as HDAD. The aim of this work was to use the iron chelator Deferiprone (DFP) as HDAD to treat SRS. Here, we describe the protective effect of the iron chelator DFP over P. salmonis infections at non-antibiotic concentrations, in bacterial challenges both in vitro and in vivo. At the cellular level, our results indicate that DFP reduced the intracellular iron content by 33.1% and P. salmonis relative load during bacterial infections by 78%. These findings were recapitulated in fish, where DFP reduced the mortality of rainbow trout challenged with P. salmonis in 34.9% compared to the non-treated group. This is the first report of the protective capacity of an iron chelator against infection in fish, becoming a potential effective host-directed therapy for SRS and other animals against ferrophilic pathogens. |
| Databáze: | OpenAIRE |
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