Genetic diversity of Lactobacillus spp. isolates from oral cavity and their probiotic and antimicrobial properties

Gene Reports ◽  
2021 ◽  
pp. 101231
Author(s):  
Khalil Azizian ◽  
Hamid Owaysee Osquee ◽  
Tala Pourlak ◽  
Rasoul Hosseinpour ◽  
Mohammad Asgharzadeh ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Oral Cavity ◽  
Antimicrobial Properties ◽  
Lactobacillus Spp

scholarly journals Virulence and Pathogenicity Properties of Aggregatibacter actinomycetemcomitans

Pathogens ◽  
2019 ◽  
Vol 8 (4) ◽  
pp. 222 ◽  
Author(s):  
Belibasakis ◽  
Maula ◽  
Bao ◽  
Lindholm ◽  
Bostanci ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Cell Death ◽  
Oral Cavity ◽  
Human Population ◽  
Geographic Origin ◽  
Aggregatibacter Actinomycetemcomitans ◽  
Periodontal Pathogen ◽  
The Individual ◽  
Highly Virulent ◽  
Oral Condition

Aggregatibacter actinomycetemcomitans is a periodontal pathogen colonizing the oral cavity of a large proportion of the human population. It is equipped with several potent virulence factors that can cause cell death and induce or evade inflammation. Because of the large genetic diversity within the species, both harmless and highly virulent genotypes of the bacterium have emerged. The oral condition and age, as well as the geographic origin of the individual, influence the risk to be colonized by a virulent genotype of the bacterium. In the present review, the virulence and pathogenicity properties of A. actinomycetemcomitans will be addressed.

The Antimicrobial Properties of Different Strains of Lactobacillus spp. Isolated from Kefir

2003 ◽  
Vol 26 (3) ◽  
pp. 434-437 ◽  
Author(s):  
A. Santos ◽  
M. San Mauro ◽  
A. Sanchez ◽  
J.M. Torres ◽  
D. Marquina
Keyword(s):  
Antimicrobial Properties ◽  
Different Strains ◽  
Lactobacillus Spp

scholarly journals Genetic diversity of Escherichia coli recovered from the oral cavity of beef cattle and their relatedness to faecal E. coli

2004 ◽  
Vol 39 (6) ◽  
pp. 523-527 ◽  
Author(s):  
M. Aslam ◽  
G.G. Greer ◽  
F.M. Nattress ◽  
C.O. Gill ◽  
L.M. McMullen
Keyword(s):  
Escherichia Coli ◽  
Genetic Diversity ◽  
Oral Cavity ◽  
Beef Cattle ◽  
E Coli

scholarly journals Determining the genetic diversity of lactobacilli from the oral cavity

2010 ◽  
Vol 82 (2) ◽  
pp. 163-169 ◽  
Author(s):  
R. Yang ◽  
S. Argimon ◽  
Y. Li ◽  
X. Zhou ◽  
P.W. Caufield
Keyword(s):  
Genetic Diversity ◽  
Oral Cavity

scholarly journals Phenolic Compounds of Reynoutria sp. as Modulators of Oral Cavity Lactoperoxidase System

Antioxidants ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 676
Author(s):  
Marcin Magacz ◽  
Maria Oszajca ◽  
Izabela Nawrot-Hadzik ◽  
Ryszard Drożdż ◽  
Anna Jurczak ◽  
...  
Keyword(s):  
Oral Cavity ◽  
Antimicrobial Properties ◽  
Oral Diseases ◽  
Compound I ◽  
Bacterial Diseases ◽  
Lactoperoxidase System ◽  
Treatment Support ◽  
Ellman’S Method ◽  
Compound Ii ◽  
Acetone Extracts

Lactoperoxidase (LPO) together with its (pseudo)halogenation cycle substrates, H2O2 and thiocyanate ions oxidized to hypothiocyanite ions, form one of the main systems involved in antimicrobial defense within the oral cavity. In bacterial diseases such as dental caries, lactoperoxidase is oxidized to a form known as Compound II, which is characterized by its inability to oxidize SCN–, resulting in a decreased generation of antimicrobial products. Reynoutria sp. rizome extracts, due to their high polyphenol content, have been tested as a source of compounds able to regenerate the antimicrobial activity of lactoperoxidase through converting the Compound II to the native LPO state. In the presented study, acetone extracts of R. japonica, R. sachalinensis, and R. x bohemica, together with their five fractions and four selected polyphenols dominating in the studied in extracts, were tested toward lactoperoxidase reactivating potential. For this purpose, IC50, EC50, and activation percentage were determined by Ellman’s method. Furthermore, the rate constants for the conversion of Compound I–Compound II and Compound II–native-LPO in the presence of extracts, extracts fractions, and selected polyphenols were determined. Finally, the ability to enhance the antimicrobial properties of the lactoperoxidase system was tested against Streptococcus mutans. We proved that Reynoutria sp. rhizome is the source of lactoperoxidase peroxidation cycle substrates, which can act as activators and inhibitors of the antimicrobial properties of that system. The presented study shows that the reactivation of lactoperoxidase could become a potential therapeutic target in prevention and treatment support in some infectious oral diseases.

scholarly journals Compositions of essential oils with antimicrobial properties against isolates from oral cavities of patients with inflammatory diseases of the periodontium

2018 ◽  
Vol 9 (4) ◽  
pp. 491-494 ◽  
Author(s):  
M. V. Kryvtsova ◽  
Y. Y. Kostenko ◽  
I. Salamon
Keyword(s):  
Oral Cavity ◽  
Essential Oils ◽  
Inflammatory Diseases ◽  
Antibacterial Properties ◽  
Antimicrobial Properties ◽  
Antimicrobial Effect ◽  
Diffusion Method ◽  
Antibiotic Resistant ◽  
Inflammatory Processes ◽  
Opportunistic Pathogenic

The significant spread of antibiotic-resistant microorganisms which are part of microbial associations of the oral cavity is considered one of the main causes for the complications and relapses of inflammatory diseases of the periodontium. This problem underlines the importance of constant monitoring of the circulation of polyantibiotic-resistant isolates, and development of new approaches and means of correction for the microbiocoenosis of the oral cavity affected by inflammatory processes. The paper is dedicated to research of antimicrobial properties of essential oil compositions against opportunistic pathogenic microorganisms, agents of inflammatory diseases of the periodontium. Out of the microorganisms isolated from the nidus of inflammation, the extra antibiotic-resistant ones were chosen. For the purpose of antibiotic susceptibility and antimicrobial activity testing, the disc diffusion method was used. The following compositions were manufactured from essential oils: Hyssopus officinalis L. + Rossmarinus officinalis L.; Menta piperita L. + H. officinalis; R. officinalis + Coriandrum sativum L.; R. officinalis + M. piperita + H. officinalis. The compositions H. officinalis + R. officinalis; M. piperita + H. officinalis were shown to have the highest level of antibacterial activity against clinical and typical isolates. Combinations of essential oils demonstrated a broader spectrum of activity against microorganisms than their components taken separately. Certain essential oils and the compositions H. officinalis + R. officinalis; M. piperita + H. officinalis were ascertained to have a high anti-mycotic activity against Candida genus microscopic fungi. This fact proves the advantage of application of combinations of essential oils compared to the use of their separate components. However, not all variants reviewed showed additive antimicrobial effect of the use of combinations of essential oils. The compositions that showed high antibacterial properties against the reviewed isolates may be used for oral hygiene products.

scholarly journals Physiological and Immunological Changes Associated with Oral Microbiota When Using a Thermoplastic Retainer

Molecules ◽  
2021 ◽  
Vol 26 (7) ◽  
pp. 1948
Author(s):  
Wurood kh. Al-lehaibi ◽  
Khulood A. Al-makhzomi ◽  
Hani Sh. Mohammed ◽  
Hamid Hammad Enezei ◽  
Mohammad Khursheed Alam
Keyword(s):  
Oral Cavity ◽  
Healthy People ◽  
Secretory Iga ◽  
Oral Microbiota ◽  
Bacterial Isolates ◽  
The Third ◽  
Adhesion Ability ◽  
Significant Difference ◽  
Immunological Changes ◽  
Lactobacillus Spp

Background: The study examined the oral microbiota, physiological and immunological changes in patients using thermoplastic retainers during three months of use. Methods: The study included several steps. Firstly, 10 swabs were collected from the buccal and palatal surfaces of the teeth of the patients, approximately 2 mL of saliva was collected from the same patients and 2 mL of saliva was collected from 10 healthy people to measure the pH and secretory IgA level. This was followed by the isolation and identfication of the bacterial isolates in the patient samples. Then, isolate susceptibility toward chlorhexidine (CHX) and their adhesion ability to thermoplastic retainer surfaces was measured. In addition to that the study estimated the numbers of Lactobacillus and Streptooccus mutans colonies during three months and finally, a comparsion of pH acidity and IgA level between the patients and healthy people was performed. The results showed the predominant bacteria during the three months were Lactobacillus spp and Streptococcus spp followed by different rates of other bacteria. Raoultella ornithinolytica showed more resistance to CHX while Lactobacillus spp. showed more sensitivity. Streptococcus mutans colony levels were higher than Lactobacillus spp colonies during the three months, also S. mutans had the highest value in adherence to retainer thermoplastic. Finally, pH acidity showed a highly significant difference (p ≤ 0.05) in the third month, like IgA levels (p ≤ 0.05). Conclusions: According to the results obtained from the current study, the researchers noted that the thermoplastic retainers helped change the oral cavity environment.

Influence of sample type and collection method on Streptococcus mutans and Lactobacillus spp. counts in the oral cavity

2005 ◽  
Vol 50 (3) ◽  
pp. 341-345 ◽  
Author(s):  
Cristiane Motisuki ◽  
Luciana Monti Lima ◽  
Denise Madalena Palomari Spolidorio ◽  
Lourdes Santos-Pinto
Keyword(s):  
Oral Cavity ◽  
Streptococcus Mutans ◽  
Sample Type ◽  
Collection Method ◽  
Lactobacillus Spp

scholarly journals Therapeutic Use of Silver Nanoparticles in the Prevention and Arrest of Dental Caries

2020 ◽  
Vol 2020 ◽  
pp. 1-7
Author(s):  
Claudia Butrón Téllez Girón ◽  
Juan F. Hernández Sierra ◽  
Idania DeAlba‐Montero ◽  
María de los A. Urbano Peña ◽  
Facundo Ruiz
Keyword(s):  
Silver Nanoparticles ◽  
Dental Caries ◽  
Oral Cavity ◽  
Antimicrobial Properties ◽  
The Other ◽  
Dental Practice ◽  
Hard Tissues ◽  
Physical And Chemical ◽  
Antibacterial Capacity

Dental caries is one of the major diseases of the oral cavity affecting humans worldwide. Different alternatives have been used for its control, but its incidence and prevalence are still high. On the other hand, silver has been used for centuries due to its antimicrobial properties. With advances in nanotechnology, the use and research in nanomaterials has increased, recently, and silver nanoparticles have become an essential part of the dental practice, giving materials physical and chemical improvements in their properties, used for their antibacterial capacity preventing and arresting dental caries. The objective of this review was to examine the use of silver nanoparticles, in the treatment of dental caries in the remineralization of teeth hard tissues, as well as the antimicrobial potential, cytotoxicity, and long-term effectiveness.

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