Antimicrobial activity of hydralazine against methicillin-resistant and methicillin-susceptible Staphylococcus aureus

Author:

Stefany Aires do Nascimento Francisca B12ORCID,do Amaral Valente Sá Lívia Gurgel123ORCID,de Andrade Neto João B123ORCID,da Silva Lisandra Juvêncio12ORCID,Rodrigues Daniel Sampaio12ORCID,de Farias Cabral Vitória P12ORCID,Barbosa Amanda Dias12ORCID,Almeida Moreira Lara E12ORCID,Braga Vasconcelos Camille R12,Cavalcanti Bruno Coêlho24ORCID,França Rios Maria E24,Silva Jacilene5ORCID,Marinho Emmanuel Silva5ORCID,dos Santos Helcio Silva6ORCID,de Mesquita Jacó RL7,Pinto Lobo Marina Duarte8ORCID,de Moraes Manoel Odorico24ORCID,Nobre Júnior Hélio V12ORCID,da Silva Cecília Rocha12ORCID

Affiliation:

1. School of Pharmacy, Laboratory of Bioprospection of Antimicrobial Molecules (LABIMAN), Federal University of Ceará, Fortaleza, CE, 60430-372, Brazil

2. Drug Research & Development Center, Federal University of Ceará, Fortaleza, CE, 60430-275, Brazil

3. Christus University Center (UNICHRISTUS), Fortaleza, CE, 60190-180, Brazil

4. Department of Physiology & Pharmacology, Federal University of Ceará, Fortaleza, CE, 60430-275, Brazil

5. Department of Chemistry, Group of Theoretical Chemistry & Electrochemistry (GQTE), State University of Ceará, Limoeiro do Norte, Ceará, 62930-000, Brazil

6. Science & Technology Centre, Course of Chemistry, State University Vale do Acaraú, Sobral, CE, 62010-560, Brazil

7. St. Joseph Hospital for Infectious Diseases, Fortaleza, CE, 60455-610, Brazil

8. Department of Biology, Federal University of Ceará, Fortaleza, CE, 60440-900, Brazil

Abstract

Background: Staphylococcus aureus is a human pathogen responsible for high mortality rates. The development of new antimicrobials is urgent. Materials & methods: The authors evaluated the activity of hydralazine along with its synergism with other drugs and action on biofilms. With regard to action mechanisms, the authors evaluated cell viability, DNA damage and molecular docking. Results: MIC and minimum bactericidal concentration values ranged from 128 to 2048 μg/ml. There was synergism with oxacillin (50%) and vancomycin (25%). Hydralazine reduced the viability of biofilms by 50%. After exposure to hydralazine 2× MIC, 58.78% of the cells were unviable, 62.07% were TUNEL positive and 27.03% presented damage in the comet assay (p < 0.05). Hydralazine showed affinity for DNA gyrase and TyrRS. Conclusion: Hydralazine is a potential antibacterial.

Publisher

Informa UK Limited

Subject

Microbiology (medical),Microbiology

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