Objective: To compare oral hygiene practices, education and social background, food intake and oral malodor of Algerian adults suffering from dental caries with normal controls, and to determine and compare the bacter...Objective: To compare oral hygiene practices, education and social background, food intake and oral malodor of Algerian adults suffering from dental caries with normal controls, and to determine and compare the bacterial composition of the supragingival plaques from the above-mentioned groups.Methods: Participants completed a questionnaire and were clinically examined for dental caries using decayed, missing and filled teeth index according to the criteria laid down by the World Health Organization. Supragingival plaque samples were collected from 50 caries-free adults(CF) and 50 caries-active adults(CA). Standard procedures of culture and identification of aerobic and anaerobic bacteria were used. Data were analyzed using Chi-square test.Results: A total of 117 bacterial strains were isolated from supragingival plaques in CF group subjects, 76(64.96%) of them belonged to 9 aerobic genera, and 41(35.04%) to 9anaerobic genera(P < 0.05). While in the second group, 199 strains were isolated, 119(59.80%) of the strains belonged to 10 aerobic genera and 80(40.20%) to 10 anaerobic bacteria(P < 0.05). Streptococcus mutans, Enterococcus faecium, Aerococcus viridans,Actinomyces meyeri, Lactobacillus acidophilus and Eubacterium limosum showed a significantly higher prevalence in the CA group(P < 0.05). The findings revealed that CA group had a high sugar intake(80%). A significantly higher frequency of tooth brushing(P < 0.000) and a significantly less self-reported oral malodor(P < 0.000) and tooth pain(P < 0.000) were found in CF group, while there was no association of socioeconomic levels and intake of meal snacks with dental caries.Conclusions: This study confirms the association of some aciduric bacteria with caries formation, and a direct association of sugar intake and cultural level with dental caries.Furthermore, oral hygiene practices minimize the prevalence of tooth decay.展开更多
Objective:To evaluate some essential oils in treatment of intractable oral infections,principally caused by hiofilm of multidrug-resistant Enterococcus faecalit(E.faecalis),such as persistent endodontic infections in ...Objective:To evaluate some essential oils in treatment of intractable oral infections,principally caused by hiofilm of multidrug-resistant Enterococcus faecalit(E.faecalis),such as persistent endodontic infections in which their treatment exhibits a real challenge for dentists.Methods:Ten chemically analyzed essential oils by gas chromatography-mass spectrometry were evaluated for antimicrobial activity against sensitive and resistant clinical strains of E.faecalit in both planktonic and hiofilm state using two methods,disk diffusion and broth microdilution.Results:Studied essential oils showed a good antimicrobial activity and high ability in E.faecalit biofilm eradication,whether for sensitive or multidrug-resistant strains,especially those of Origanum glandulosum and Thymbra capitata with interesting minimum inhibitory concentration,biofilm inhibitory concentration,and biofilm eradication concent ration values which doesn't exceed 0.063%,0.75%,and 1.5%,respectively.Conclusions:Findings of this study indicate that essential oils extracted from aromatic plants can be used in treatment of intractable oral infections,especially caused by biofilm of multidrugresistant E.faecalis.展开更多
The chemical composition and antimicrobial potential of Cistus munbyi essential oil were studied for the first time. GC and GC–MS analysis revealed 48 compounds representing 96.98% of the oil. Terpinen-4-ol(23.75%), ...The chemical composition and antimicrobial potential of Cistus munbyi essential oil were studied for the first time. GC and GC–MS analysis revealed 48 compounds representing 96.98% of the oil. Terpinen-4-ol(23.75%), meta-Cymene(17.30%), and Sabinene(12.38%)were the major constituents. Antimicrobial activity was evaluated against nine pathogens using the disc diffusion and broth micro-dilution methods. Results show that C.munbyi essential oil possesses strong antimicrobial activity against all strains, regardless if Gram-positive or Gramnegative bacteria, or yeast, with MICs values not exceeding10(mg/ml). In addition to its efficacy, C. munbyi essential oil has an unusual antimicrobial potency which is attributed to its specific chemical composition. Thus, findings presented here suggest that endemic C. munbyi contains a very interesting essential oil that may be valuable in several areas.展开更多
Background: A number of epidemiological studies around the world have shown that the occurred and the high prevalence of some chronic diseases such as diabetes, obesity, cardiovascular disease, etc. are mainly caused ...Background: A number of epidemiological studies around the world have shown that the occurred and the high prevalence of some chronic diseases such as diabetes, obesity, cardiovascular disease, etc. are mainly caused by a high calorie and unbalanced diet associate with reduced physical activity. In Algeria, as in many emerging countries to improve the standard of living of the population and changes in lifestyle, more westernized characterized by abundant food and sedentary lifestyle especially among young people contribute to the increased incidence of these chronic diseases. Objectives: This work consists of a dietary survey conducted among adolescent boys and girls in Tlemcen (Algeria). Subject and Methods: This is a descriptive cross-sectional study of dietary intake of adolescent aged 10 - 17 years and anthropometric parameters: weight, height, body mass index. Results: Increased fat intake was associated with increased body mass index in both sexes, increased obesity and abdominal obesity in girls, boys are more active than girls and we observed decreased intake of sugar, the nutritient adequacy ratio of folate, niacin, vitamin B6, iron, magnesium. Conclusion: The early prevention of obesity in children and adolescents is essential in the prevention of chronic diseases in adults. We recommended adolescent by healthy diets towards helps regulate their body weight and reduces the risk of cardiovascular disease and some types of cancer and especially the girls by lifestyle more active.展开更多
Objective:To evaluate the antimicrobial potency of Rosmarinus eriocalyx(R.eriocalyx)essential oil and total polyphenols against pathogenic microorganisms.Methods:Antimicrobial activity of R.eriocalyx extracts was asse...Objective:To evaluate the antimicrobial potency of Rosmarinus eriocalyx(R.eriocalyx)essential oil and total polyphenols against pathogenic microorganisms.Methods:Antimicrobial activity of R.eriocalyx extracts was assessed by disc diffusion method and minimum inhibitory concentrations determination.Essential oil obtained from endemic rosemary by hydrodistillation was analysed by gas chromatograph/retention index and gas chromatograph-mass spectrometer.Results:An interesting antimicrobial activity was shown by R.eriocalyx extracts.Polyphenols,constituted mainly by flavonoids,were the most effective extract with very low minimum inhibitory concentrations values,ranged between 0.06 and 8.00 mg/mL,while essential oil was less efficient.It should be noted that antimicrobial activities of both R.eriocalyx extracts were more directed against fungi and Gram-positive bacteria than Gram-negative ones,in which Staphylococcus aureus,Enterococcus faecalis,and Candida albicans were the most sensitive strains.Concerning chemical composition of R.eriocalyx essential oil,camphor(37.8%),1,8-cineole(17.4%),camphene(13.3%),and α-pinene(10.9%)were the major compounds.Conclusions:The findings of the present study indicate that R.eriocalyx extracts possess significant bactericidal and fungicidal activities.Because of its richness in essential oil,and especially flavonoids,R.eriocalyx may be a source for effective and safe antimicrobial agents.展开更多
基金Supported by the National Committee of Research Program and Assessment(Cnepru-code I02020130110)
文摘Objective: To compare oral hygiene practices, education and social background, food intake and oral malodor of Algerian adults suffering from dental caries with normal controls, and to determine and compare the bacterial composition of the supragingival plaques from the above-mentioned groups.Methods: Participants completed a questionnaire and were clinically examined for dental caries using decayed, missing and filled teeth index according to the criteria laid down by the World Health Organization. Supragingival plaque samples were collected from 50 caries-free adults(CF) and 50 caries-active adults(CA). Standard procedures of culture and identification of aerobic and anaerobic bacteria were used. Data were analyzed using Chi-square test.Results: A total of 117 bacterial strains were isolated from supragingival plaques in CF group subjects, 76(64.96%) of them belonged to 9 aerobic genera, and 41(35.04%) to 9anaerobic genera(P < 0.05). While in the second group, 199 strains were isolated, 119(59.80%) of the strains belonged to 10 aerobic genera and 80(40.20%) to 10 anaerobic bacteria(P < 0.05). Streptococcus mutans, Enterococcus faecium, Aerococcus viridans,Actinomyces meyeri, Lactobacillus acidophilus and Eubacterium limosum showed a significantly higher prevalence in the CA group(P < 0.05). The findings revealed that CA group had a high sugar intake(80%). A significantly higher frequency of tooth brushing(P < 0.000) and a significantly less self-reported oral malodor(P < 0.000) and tooth pain(P < 0.000) were found in CF group, while there was no association of socioeconomic levels and intake of meal snacks with dental caries.Conclusions: This study confirms the association of some aciduric bacteria with caries formation, and a direct association of sugar intake and cultural level with dental caries.Furthermore, oral hygiene practices minimize the prevalence of tooth decay.
基金Supported by the Ministry of Higher Education and Scientific Research of People's Democratic Republic of Algeria(Grant No.B05/N125)
文摘Objective:To evaluate some essential oils in treatment of intractable oral infections,principally caused by hiofilm of multidrug-resistant Enterococcus faecalit(E.faecalis),such as persistent endodontic infections in which their treatment exhibits a real challenge for dentists.Methods:Ten chemically analyzed essential oils by gas chromatography-mass spectrometry were evaluated for antimicrobial activity against sensitive and resistant clinical strains of E.faecalit in both planktonic and hiofilm state using two methods,disk diffusion and broth microdilution.Results:Studied essential oils showed a good antimicrobial activity and high ability in E.faecalit biofilm eradication,whether for sensitive or multidrug-resistant strains,especially those of Origanum glandulosum and Thymbra capitata with interesting minimum inhibitory concentration,biofilm inhibitory concentration,and biofilm eradication concent ration values which doesn't exceed 0.063%,0.75%,and 1.5%,respectively.Conclusions:Findings of this study indicate that essential oils extracted from aromatic plants can be used in treatment of intractable oral infections,especially caused by biofilm of multidrugresistant E.faecalis.
基金supported by the Ministry of Higher Education and Scientific Research of People’s Democratic Republic of Algeria(Grant No.F02020110081)
文摘The chemical composition and antimicrobial potential of Cistus munbyi essential oil were studied for the first time. GC and GC–MS analysis revealed 48 compounds representing 96.98% of the oil. Terpinen-4-ol(23.75%), meta-Cymene(17.30%), and Sabinene(12.38%)were the major constituents. Antimicrobial activity was evaluated against nine pathogens using the disc diffusion and broth micro-dilution methods. Results show that C.munbyi essential oil possesses strong antimicrobial activity against all strains, regardless if Gram-positive or Gramnegative bacteria, or yeast, with MICs values not exceeding10(mg/ml). In addition to its efficacy, C. munbyi essential oil has an unusual antimicrobial potency which is attributed to its specific chemical composition. Thus, findings presented here suggest that endemic C. munbyi contains a very interesting essential oil that may be valuable in several areas.
文摘Background: A number of epidemiological studies around the world have shown that the occurred and the high prevalence of some chronic diseases such as diabetes, obesity, cardiovascular disease, etc. are mainly caused by a high calorie and unbalanced diet associate with reduced physical activity. In Algeria, as in many emerging countries to improve the standard of living of the population and changes in lifestyle, more westernized characterized by abundant food and sedentary lifestyle especially among young people contribute to the increased incidence of these chronic diseases. Objectives: This work consists of a dietary survey conducted among adolescent boys and girls in Tlemcen (Algeria). Subject and Methods: This is a descriptive cross-sectional study of dietary intake of adolescent aged 10 - 17 years and anthropometric parameters: weight, height, body mass index. Results: Increased fat intake was associated with increased body mass index in both sexes, increased obesity and abdominal obesity in girls, boys are more active than girls and we observed decreased intake of sugar, the nutritient adequacy ratio of folate, niacin, vitamin B6, iron, magnesium. Conclusion: The early prevention of obesity in children and adolescents is essential in the prevention of chronic diseases in adults. We recommended adolescent by healthy diets towards helps regulate their body weight and reduces the risk of cardiovascular disease and some types of cancer and especially the girls by lifestyle more active.
基金Supported by the Ministry of Higher Education and Scientific Research of People's Democratic Republic of Algeria(Grant No.F02020110081).
文摘Objective:To evaluate the antimicrobial potency of Rosmarinus eriocalyx(R.eriocalyx)essential oil and total polyphenols against pathogenic microorganisms.Methods:Antimicrobial activity of R.eriocalyx extracts was assessed by disc diffusion method and minimum inhibitory concentrations determination.Essential oil obtained from endemic rosemary by hydrodistillation was analysed by gas chromatograph/retention index and gas chromatograph-mass spectrometer.Results:An interesting antimicrobial activity was shown by R.eriocalyx extracts.Polyphenols,constituted mainly by flavonoids,were the most effective extract with very low minimum inhibitory concentrations values,ranged between 0.06 and 8.00 mg/mL,while essential oil was less efficient.It should be noted that antimicrobial activities of both R.eriocalyx extracts were more directed against fungi and Gram-positive bacteria than Gram-negative ones,in which Staphylococcus aureus,Enterococcus faecalis,and Candida albicans were the most sensitive strains.Concerning chemical composition of R.eriocalyx essential oil,camphor(37.8%),1,8-cineole(17.4%),camphene(13.3%),and α-pinene(10.9%)were the major compounds.Conclusions:The findings of the present study indicate that R.eriocalyx extracts possess significant bactericidal and fungicidal activities.Because of its richness in essential oil,and especially flavonoids,R.eriocalyx may be a source for effective and safe antimicrobial agents.
