ABSTRACT Background: Oral infections and dental caries are still considered as serious public hea... more ABSTRACT Background: Oral infections and dental caries are still considered as serious public health problem and inflict a costly burden to health care services around the world especially in developing countries. Objectives: In the present study, we evaluated the antibacterial activity of Capsella bursa-pastoris alone and also combined with Glycyrrhiza glabra against Streptococcus mutans, S. sanguis, Actinomyces viscosus, Enterococcus faecalis as oral pathogens. Materials and Methods: The antimicrobial activities of an ethanol extract of C. bursa-pastoris alone and in combination with G. glabra were in vitro tested against six reference strains of oral pathogenic bacteria. The antimicrobial activities of the extracts were examined using disc diffusion method and the minimum inhibitory concentration (MIC) determined by both broth and Agar dilution methods and minimum bactericidal concentration (MBC) by broth dilution methods. Results: In this study, C. bursa-pastoris extract showed good antibacterial activity against six bacteria in using in of the mentioned methods. No strain in this study showed resistance against this extract. Antibacterial activity of mixed extract including C. bursa-pastoris and G. glabra was evaluated and showed that mixed extract was more effective against all bacteria than any of the cases alone that indicate the synergistic effect between these two extracts. Conclusions: C. bursa-pastoris and its mixture with G. glabra are suggested as appropriate candidates to control dental caries and endodontic infections.
In this study, antimicrobial activities of an ethanol extract of Tribulus terrestris aloneand in ... more In this study, antimicrobial activities of an ethanol extract of Tribulus terrestris aloneand in combination with Capsella bursa-pastoris and Glycyrrhiza glabra were examined in vitro against six pathogens namely Streptococcus mutans, Streptococcus sanguis, Actinomyces viscosus, Enterococcus faecalis Staphylococcus aureus, and Escherichia coli. Antibacterial activities of the extracts were examined using disc and well diffusion methods and the minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) of ethanol extracts were determined against these microorganisms using agar and broth dilution methods. Chlorhexidine was used as positive control. Tribulus terrestris extract exhibited good antibacterial activity against all bacteria. Antibacterial activity of mixed extract was evaluated and exhibited that mixed extract was more effective against all bacteria than any of the cases alone which indicates the synergistic effect between these three extracts (p˂0.0...
Heavy metals are the most important pollutants in the environment. The productiion of toxic metal... more Heavy metals are the most important pollutants in the environment. The productiion of toxic metals by human activities has lead to the contamination of soil. The presence of these metals in the soil and their accumulation in plants grown on these soils will have adverse effects on humans and animals. One approach to reduce the accumulation of heavy metals in plants is using of plant hormones. This study was designed to investigate the effects of methyl jasmonate on accumulation of lead on radish (Raphanus sativus L.) in hydroponic conditions. Lead sulfate with four different concentrations (0,250,500 and 750 mg/ L) and methyl jasmonate with three concentrations (0, 0.01 and 0.1 mM) were used. The experiment was conducted as factorial in a completely randomized design with three replications. The contents of chlorophyll a and b, proline and Pb accumulation in shoots and roots of plants were measured. The results showed that the lead reduced chlorophyll content and this reduction with...
Oral infections and dental caries are still considered as serious public health problems and infl... more Oral infections and dental caries are still considered as serious public health problems and inflict a costly burden to health care services around the world and especially in developing countries. In the present study, we evaluated the antibacterial activity of Glycyrrhiza glabra (G. glabra) against oral pathogens by diffusion methods and determined the minimum inhibitory concentration (MIC) by both broth and Agar dilution methods and minimum bactericidal concentration (MBC) by broth dilution methods. In this study, G. glabra extract showed good antibacterial activity against six bacteria. No strain in this study showed resistance against this extract. G. glabrais suggested as an appropriate candidate to help us in order to control dental caries and endodontic infections.
ABSTRACT Background: Oral infections and dental caries are still considered as serious public hea... more ABSTRACT Background: Oral infections and dental caries are still considered as serious public health problem and inflict a costly burden to health care services around the world especially in developing countries. Objectives: In the present study, we evaluated the antibacterial activity of Capsella bursa-pastoris alone and also combined with Glycyrrhiza glabra against Streptococcus mutans, S. sanguis, Actinomyces viscosus, Enterococcus faecalis as oral pathogens. Materials and Methods: The antimicrobial activities of an ethanol extract of C. bursa-pastoris alone and in combination with G. glabra were in vitro tested against six reference strains of oral pathogenic bacteria. The antimicrobial activities of the extracts were examined using disc diffusion method and the minimum inhibitory concentration (MIC) determined by both broth and Agar dilution methods and minimum bactericidal concentration (MBC) by broth dilution methods. Results: In this study, C. bursa-pastoris extract showed good antibacterial activity against six bacteria in using in of the mentioned methods. No strain in this study showed resistance against this extract. Antibacterial activity of mixed extract including C. bursa-pastoris and G. glabra was evaluated and showed that mixed extract was more effective against all bacteria than any of the cases alone that indicate the synergistic effect between these two extracts. Conclusions: C. bursa-pastoris and its mixture with G. glabra are suggested as appropriate candidates to control dental caries and endodontic infections.
In this study, antimicrobial activities of an ethanol extract of Tribulus terrestris aloneand in ... more In this study, antimicrobial activities of an ethanol extract of Tribulus terrestris aloneand in combination with Capsella bursa-pastoris and Glycyrrhiza glabra were examined in vitro against six pathogens namely Streptococcus mutans, Streptococcus sanguis, Actinomyces viscosus, Enterococcus faecalis Staphylococcus aureus, and Escherichia coli. Antibacterial activities of the extracts were examined using disc and well diffusion methods and the minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) of ethanol extracts were determined against these microorganisms using agar and broth dilution methods. Chlorhexidine was used as positive control. Tribulus terrestris extract exhibited good antibacterial activity against all bacteria. Antibacterial activity of mixed extract was evaluated and exhibited that mixed extract was more effective against all bacteria than any of the cases alone which indicates the synergistic effect between these three extracts (p˂0.0...
Heavy metals are the most important pollutants in the environment. The productiion of toxic metal... more Heavy metals are the most important pollutants in the environment. The productiion of toxic metals by human activities has lead to the contamination of soil. The presence of these metals in the soil and their accumulation in plants grown on these soils will have adverse effects on humans and animals. One approach to reduce the accumulation of heavy metals in plants is using of plant hormones. This study was designed to investigate the effects of methyl jasmonate on accumulation of lead on radish (Raphanus sativus L.) in hydroponic conditions. Lead sulfate with four different concentrations (0,250,500 and 750 mg/ L) and methyl jasmonate with three concentrations (0, 0.01 and 0.1 mM) were used. The experiment was conducted as factorial in a completely randomized design with three replications. The contents of chlorophyll a and b, proline and Pb accumulation in shoots and roots of plants were measured. The results showed that the lead reduced chlorophyll content and this reduction with...
Oral infections and dental caries are still considered as serious public health problems and infl... more Oral infections and dental caries are still considered as serious public health problems and inflict a costly burden to health care services around the world and especially in developing countries. In the present study, we evaluated the antibacterial activity of Glycyrrhiza glabra (G. glabra) against oral pathogens by diffusion methods and determined the minimum inhibitory concentration (MIC) by both broth and Agar dilution methods and minimum bactericidal concentration (MBC) by broth dilution methods. In this study, G. glabra extract showed good antibacterial activity against six bacteria. No strain in this study showed resistance against this extract. G. glabrais suggested as an appropriate candidate to help us in order to control dental caries and endodontic infections.
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