Do Cutibacterium acnes and Staphylococcus aureus define two different types of folliculitis?

2018 ◽  
Vol 32 (7) ◽  
pp. e266-e268 ◽  
Author(s):  
C. Frenard ◽  
M-A. Dagnelie ◽  
A. Khammari ◽  
M. Saint-Jean ◽  
A. Boisrobert ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Cutibacterium Acnes ◽  
Different Types ◽  
And Staphylococcus Aureus

scholarly journals Effect of Different Saudi Honey Types Mixed with Natural Substances on Some Bacterial Strains

2017 ◽  
Vol 24 (1) ◽  
pp. 23-31 ◽  
Author(s):  
Fatimah A. Nashawi ◽  
Hani Y. Abdullah ◽  
Nahlaa A. Khalifa ◽  
Ibrahim A. Alzahrani ◽  
Ahmed A. Al-Ghamdi
Keyword(s):  
Staphylococcus Aureus ◽  
Klebsiella Pneumoniae ◽  
Antibacterial Effect ◽  
Synergistic Effects ◽  
Bacterial Species ◽  
Bacterial Strains ◽  
Natural Substances ◽  
Different Types ◽  
And Staphylococcus Aureus ◽  
Natural Honey

To evaluate the antibacterial eff ects of three types of Saudi honey (Feghra, Sider and Natural honey) alone and mixed with ginger or lemon in comparison to Manuka honey as a potential natural antibacterial agent. Saudi honeys were evaluated against five types of bacterial strains; Klebsiella pneumoniae, Staphylococcus aureus, Pseudomonas aeruginosa, Haemophilus influenzae and Streptococcus pneumoniae. Chocolate agars were prepared first with different concentrations of each type of honey, and then with specific concentrations either of ginger or lemon added to honey. Bacterial species were inoculated on each agar and incubated at 37oC in a CO2 incubator overnight. Significant differences were found between diff erent types of honey and different concentrations of the same honey on bacterial growth. There are no significant differences and synergistic effects when adding ginger to diff erent honey types. Addition of lemon show significant differences and good synergistic effects against all tested bacterial species except Klebsiella pneumoniae and Staphylococcus aureus at 15 and 20% honey concentration. In conclusion, antibacterial effects of different types of honey are type and concentration dependent. Adding lemon to the different types of honey changes the pH and acidity and increases the honey’s antibacterial effect.

scholarly journals Effect of two cosmetic compounds on the growth, biofilm formation activity, and surface properties of acneic strains of Cutibacterium acnes and Staphylococcus aureus

2018 ◽  
Vol 8 (3) ◽  
pp. e00659 ◽  
Author(s):  
Andrei V. Gannesen ◽  
Valerie Borrel ◽  
Luc Lefeuvre ◽  
Alexander I. Netrusov ◽  
Vladimir K. Plakunov ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Surface Properties ◽  
Biofilm Formation ◽  
Cutibacterium Acnes ◽  
And Staphylococcus Aureus

Interaction of implant infection-related commensal bacteria with mesenchymal stem cells: A comparison between Cutibacterium acnes and Staphylococcus aureus

2021 ◽  
Author(s):  
Taghrid S El-Mahdy ◽  
Céline Mongaret ◽  
Jennifer Varin-Simon ◽  
Fabien Lamret ◽  
Véronique Vernet-Garnier ◽  
...  
Keyword(s):  
Stem Cells ◽  
Staphylococcus Aureus ◽  
Bone Marrow ◽  
Mesenchymal Stem Cells ◽  
Regenerative Process ◽  
Bacterial Biofilm ◽  
Biofilm Production ◽  
Cutibacterium Acnes ◽  
Live Bacteria ◽  
And Staphylococcus Aureus

Abstract Staphylococcus aureus and Cutibacterium acnes are involved in several tissue infections and can encounter mesenchymal stem cells (MSCs) during their role in tissue regenerative process. C. acnes and S. aureus internalization by three types of MSCs derived from bone marrow, dental pulp and Wharton's jelly; and bacterial biofilm production were compared. Internalization rates ranged between 1.7%-6.3% and 0.8%-2.7% for C. acnes and S. aureus, respectively. While C. acnes strains exhibited limited cytotoxic effect on MSCs, S. aureus were more virulent with marked effect starting after only three hours of interaction. Both bacteria were able to produce biofilms with respectively aggregated and monolayered structures for C. acnes and S. aureus. The increase in C. acnes capacity to develop biofilm following MSCs’ internalization was not linked to the significant increase in number of live bacteria, except for bone marrow-MSCs/C. acnes CIP 53.117 with 79% live bacteria compared to the 36% before internalization. On the other hand, internalization of S. aureus had no impact on its ability to form biofilms composed mainly of living bacteria. The present study underlined the complexity of MSCs-bacteria cross-interaction and brought insights into understanding the MSCs behaviour in response to bacterial infection in tissue regeneration context.

scholarly journals Mathematical Modeling for the Growth of Salmonella spp. and Staphylococcus aureus in Cake at Fluctuating Temperatures

2021 ◽  
Vol 11 (6) ◽  
pp. 2475
Author(s):  
Heeyoung Lee ◽  
Jin Hwa Park ◽  
Yu Kyoung Park ◽  
Hyun Jung Kim
Keyword(s):  
Staphylococcus Aureus ◽  
Dynamic Models ◽  
Lag Phase ◽  
Salmonella Spp ◽  
Phase Duration ◽  
Microbial Risk ◽  
Cell Counts ◽  
Different Types ◽  
And Staphylococcus Aureus ◽  
Fluctuating Temperatures

This study aimed to develop dynamic mathematical models to predict the growth of Salmonella spp. and Staphylococcus aureus in a cake under fluctuating temperatures. Among the nine different types of cakes frequently served during school meals, one type of cake was selected based on bacterial growth and water activity. Cocktails of Salmonella spp. and S. aureus were inoculated in the samples and stored at 4–35 °C for up to 336 h. The growth of Salmonella spp. and S. aureus was observed above 20 and 15 °C, respectively. The bacterial cell counts were fitted in the Baranyi model, and the maximum specific growth rate (μmax; log CFU/g/h) and lag phase duration (LPD; h) were analyzed using a polynomial model as a function of temperature (R2 = 0.968–0.988), and the performance of the developed models was appropriate. Furthermore, dynamic models were developed, and the predictions were acceptable in changing the temperature, indicating that the developed dynamic models can successfully predict the outcomes of Salmonella spp. and S. aureus in cake. These results provide useful information for assessing and managing microbial risk in foods by predicting the behavior of Salmonella spp. and S. aureus in cake, especially in changing temperature.

DECONTAMINATION OF VETERINARY SURVEILLANCE OBJECTS BY NEW GENERATION MEDICINE

1970 ◽  
pp. 64-67
Author(s):  
М. S. Saypullaev ◽  
А. U. Koychuev ◽  
Т. B. Mirzoeva
Keyword(s):  
Staphylococcus Aureus ◽  
Inhalation Exposure ◽  
Gram Negative Bacteria ◽  
Hazard Class ◽  
E Coli ◽  
Highly Efficient ◽  
Mucous Membranes ◽  
Environmentally Safe ◽  
New Generation ◽  
And Staphylococcus Aureus

The successful conduct of disinfection measures largely depends on the availability of veterinary practice a highly efficient, environmentally safe disinfectants. In this regard, finding new highly efficient disinfectant remains relevant. Studies found that the "Polied" (OOO "Razvitie XXI Vek, Russia) can be attributed to the highly efficient and environmentally friendly means. Solutions "Polied" have a high disinfectant activity against smooth and rough surfaces in the laboratory against gram-positive, gram-negative bacteria, mycobacteria and spores of microorganisms. Studies have established that solutions should be "Polied" obezzarajivatmi E. coli (EA 1257) concentrations of 0.1% on smooth surfaces and Staphylococcus aureus concentration of 0.05% in 1 hour from the calculation of 0.25-0.3 litres/m2. Disinfection of rough test surfaces against Escherichia coli and Staphylococcus aureus occurred after treatment with 0,3% solution of 3-hour exposure, at a rate of 0.5 l/m2. It was also found that 1.0% solution "Polied" fully obezzarazhivatel test the surface of mycobacteria (PCs-5) and at double the 0.6% concentration for 24 hours. Disinfection of rough test surfaces contaminated with spores of B. cereus (PCs 96) was achieved with a 4.0% solution at twice the irrigation rate of 0.5 l/m2 at an exposure of 24 hours. Toxicity solutions of the drug "Polied" refer to "moderate" threat (hazard class 3) and low-hazard substances (4 hazard class) when applied to the skin, mucous membranes of the eyes, and inhalation exposure on the respiratory system.

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