In vitro antimicrobial evaluation, effects of halide concentration and hemolysis study of silver-N-heterocyclic carbene complexes

Aher, Sainath Babaji; Das, Anamika; Muskawar, Prashant Narayan; Osborne, Jabez W.; Bhagat, Pundlik Rambhau

doi:10.1007/s11164-017-3216-9

Cited by 4 publications

(1 citation statement)

References 29 publications

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“…Aher et al tested morpholine containing silver complexes tuning the side chain to evaluate the possible changes in antimicrobial effects. (254-258) [74]. The compounds 256 and 255 with butyl and methyl side chain in addition to the morpholine moiety more than other compounds inhibited the bacterial growth with MIC of 12.5 and 6.25 µmolL −1 against S. aureus, respectively, and 50 µM against S. enterica with an efficient growth inhibition up to 21 days with disruption of cell wall as monitored by SEM analysis.…”

Section: Nhc-silver Complex With Ligand In Dual Activitymentioning

confidence: 94%

Structure–Activity Relationships in NHC–Silver Complexes as Antimicrobial Agents

2023

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Silver has a long history of antimicrobial activity and received an increasing interest in last decades owing to the rise in antimicrobial resistance. The major drawback is the limited duration of its antimicrobial activity. The broad-spectrum silver containing antimicrobial agents are well represented by N-heterocyclic carbenes (NHCs) silver complexes. Due to their stability, this class of complexes can release the active Ag+ cations in prolonged time. Moreover, the properties of NHC can be tuned introducing alkyl moieties on N-heterocycle to provide a range of versatile structures with different stability and lipophilicity. This review presents designed Ag complexes and their biological activity against Gram-positive, Gram-negative bacteria and fungal strains. In particular, the structure–activity relationships underlining the major requirements to increase the capability to induce microorganism death are highlighted here. Moreover, some examples of encapsulation of silver–NHC complexes in polymer-based supramolecular aggregates are reported. The targeted delivery of silver complexes to the infected sites will be the most promising goal for the future.

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Section: Nhc-silver Complex With Ligand In Dual Activitymentioning

confidence: 94%