Cobalt bis-dicarbollide and its ammonium derivatives are effective antimicrobial and antibiofilm agents

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388980%3A_____%2F19%3A00507932" target="_blank" >RIV/61388980:_____/19:00507932 - isvavai.cz</a>

Alternative codes found

RIV/44555601:13440/19:43894898 RIV/60461373:22330/19:43918651

Result on the web

<a href="http://hdl.handle.net/11104/0298894" target="_blank" >http://hdl.handle.net/11104/0298894</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jorganchem.2019.120891" target="_blank" >10.1016/j.jorganchem.2019.120891</a>

Result language

angličtina

Original language name

Cobalt bis-dicarbollide and its ammonium derivatives are effective antimicrobial and antibiofilm agents

Original language description

The failure of currently used antibiotics in infections treatment caused by still often emerging microbial resistance is one of the most important worldwide research items. Based on the proved biological activities of cobalt bis-dicarbollide anion [1]- and its derivatives in many medical fields, we tested the sodium salt of cobalt bis-dicarbollide Na[1], and its two ammonium derivatives 8-NH3-[1], 8- PhNH2-[1] to confirm their antimicrobial and, to the best of our knowledge, to demonstrate as first their antibiofilm action. The representatives of the opportunistic pathogens of gram-positive (Staphylococcus spp. and Enterococcus faecalis) and gram-negative bacteria (Pseudomonas aeruginosa and Escherichia coli), yeast Candida parapsilosis and filamentous fungus Trichosporon cutaneum were chosen. Antimicrobial activity was determined by minimum inhibitory concentrations (MIC80) and antibiofilm activity determination was based on MTT assay, crystal violet staining and visualization by microscopic methods. Cytotoxicity against human embryonic kidney cells HEK 293T was measured using resazurin assay. Antimicrobial activity of Na[1], 8-NH3-[1], 8-PhNH2-[1] was significant for gram-positive bacteria and T. cutaneum at non-cytotoxic concentrations of about 5 μg/mL while other microorganisms were not sensitive up to 90 μg/mL. Significant antibiofilm effect was observed with Na[1] in gram-positive bacteria whose biofilm formation was inhibited by at least 80% at 50 μg/mL. In contrast to the selective antibiofilm activity of 8-PhNH2-[1] which prevents T. cutaneum biofilm formation at 1 μg/mL, other microorganisms were almost unaffected. Our results provided the first evidence about antibiofilm activity of cobalt bis-dicarbollide against gram-positive bacteria as well as the possibility of extending its usage to include the treatment of infections caused by other types of microorganisms by preparing and using its derivatives.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10402 - Inorganic and nuclear chemistry

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2019

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Organometallic Chemistry

ISSN

0022-328X

e-ISSN

—

Volume of the periodical

899

Issue of the periodical within the volume

OCT

Country of publishing house

CH - SWITZERLAND

Number of pages

8

Pages from-to

120891

UT code for WoS article

000485104600001

EID of the result in the Scopus database

2-s2.0-85070886348