1969
DOI: 10.1038/icb.1969.148
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Bactericidal Action of Selected Phenanthroline Chelates and Related Compounds

Abstract: Summary. Selected 1,10-phenanthroline hydrochlorides, quaternary salts and metal chelates are bactericidal to Staphylococcus aureus. Streptococcus pyogenes (Group A), Clostridium perfringens, Escherichia coli and Proteus vulgaris in serum broth in that general order of decreasing sensitivity; certain hydrochlorides and metal chelates are also bactericidal to Staphylococcus aureus in distilled water in the absence of added metal ion.Metal chelates with similar or identical bactericidal titres following 48 hours… Show more

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Cited by 53 publications
(22 citation statements)
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“…Whereas metal-phen complexes can be bacteristatic (Dwyer et al, 1969) and bactericidal (Butler et al, 1969) towards many Grampositive bacteria they are relatively ineffective against Gram-negative organisms. In addition, dilute aqueous solutions of phen and its Cu(II) and Mn(II) complexes were highly toxic to clinical isolates of Candida species Geraghty et al, 1998).…”
Section: Discussionmentioning
confidence: 99%
See 1 more Smart Citation
“…Whereas metal-phen complexes can be bacteristatic (Dwyer et al, 1969) and bactericidal (Butler et al, 1969) towards many Grampositive bacteria they are relatively ineffective against Gram-negative organisms. In addition, dilute aqueous solutions of phen and its Cu(II) and Mn(II) complexes were highly toxic to clinical isolates of Candida species Geraghty et al, 1998).…”
Section: Discussionmentioning
confidence: 99%
“…1,10-Phenanthroline (phen) and substituted derivatives, both in the metal-free state and as ligands co-ordinated to transition metals, disturb the functioning of a wide variety of biological systems (Butler et al, 1969). Furthermore, when the metal-free N,N-chelating bases are found to be bioactive it is usually assumed that the sequestering of trace metals is involved, and that the resulting metal complexes are the active species (MacLeod, 1952;Dwyer et al, 1969) O (phen=1,10-phenanthroline; malH 2 =malonic acid) inhibit the growth of C. albicans by around 95% at a concentration of 5 mg/ml (Coyle et al, 2003).…”
Section: U N C O R R E C T E D P R O O Fmentioning
confidence: 99%
“…1,10-Phenanthroline (phen) (Figure 1) and substituted derivatives, both in the metal-free state and as ligands co-ordinated to transition metals, disturb the functioning of a wide variety of biological systems (Butler et al 1969). Furthermore, when the metal-free N,N -chelating bases are found to be bioactive it is usually assumed that the sequestering of trace metals in situ is involved, and that the resulting metal complexes are the active species (MacLeod, 1952;Dwyer et al 1969).…”
Section: Introductionmentioning
confidence: 99%
“…DMSO, at the concentration used as a proteolytic inhibitor diluent, did not interfere with bacterial growth behavior (data not shown). PHEN and substituted derivatives, both in the metal-free state and as ligands co-ordinated to transition metals, disturb the functioning of a wide variety of biological systems (26). The in vitro antibacterial action of PHEN has been demonstrated on several species of bacteria, presenting bactericidal action towards many Gram-positive bacteria (27).…”
Section: Resultsmentioning
confidence: 99%