scholarly journals The Effects of Turmeric Infusion and Turmeric Juice (Curcuma Domestica) on The Staphylococcus Aureus Growth in Vitro

2021 ◽  
Vol 2 (2) ◽  
pp. 54-60
Author(s):  
Renny Novi Puspitasari ◽  
Handayani Handayani ◽  
Ratna Sofaria
Keyword(s):  
Staphylococcus Aureus ◽  
Pearson Correlation ◽  
Food Poisoning ◽  
Average Growth ◽  
Phenol Derivatives ◽  
Group I ◽  
The One ◽  
Insect Bites ◽  
Growth Of Bacteria

Background: Turmeric is a plant that grows in tropical areas and functions as medicine. The chemical compounds contained in turmeric have a role as antioxidants, antimicrobials, anti-cancer, indigestion, smallpox, insect bites. The curcumin content in turmeric has antibacterial activity against various types of Gram negative, Gram positive, antiviral and anti-tumor bacteria. Essential oils can be used as antibacterial because they contain hydroxyl and carbonyl functional groups which are phenol derivatives. Flavonoids can interfere with cell wall formation with peptidoglycan transpeptidase activity which will break down cell walls and damage cell membranes so that important components such as proteins, nucleic acids, nucleotides will be lysis. Staphylococcus bacteria are normal flora on the skin, respiratory tract, and digestive tract of food in humans. These bacteria can cause disease when they reach 1,000,000 or 106 per gram, an amount sufficient to produce the toxin. S. aureus bacteria can cause various types of infections ranging from minor skin infections, food poisoning to systemic infections. The aim of our study was to analyze the effects of infusion and turmeric juice (Curcuma domestica val) on the growth of bacteria Staphylococcus aureus through invitro. Method: This study is a laboratory experimental study with the aim of analyzing turmeric infusion (Curcuma domestica val) and turmeric juice effect on the growth of staphylococcus aureus by invitro. This research was conducted in an integrated laboratory, FK UNUSA. The samples in this study were 4 replications per treatment. The independent variables in this study were turmeric infusion and turmeric juice (with a concentration of 10%, 30%, 50% while the dependent variable in this study was the growth of Staphylococcus aureus bacteria. Data analysis used was the one way ANOVA test and Pearson correlation to determine the effect of giving turmeric infusion and turmeric juice on the growth of bacteria staphylococcus aureus through invitro. Result: The average growth of bacteria in the turmeric infusion in group I (control), 10%, 30% and 50% of turmeric infusion was 4.89 ± 0.4425 log CFU / ml, 3.07 ± 0.61330 log CFU / ml, 2.99 ± 0.63986 log CFU. / ml and 3.02 ± 0.22650 log CFU / ml. The average growth of this bacteria in giving turmeric juice in group I (control), giving 10%, 30% and 50% turmeric infusion was 4.89 ± 0.04425 log CFU / ml, 4.40 ± 0.18355log CFU / ml, 3.10 ± 0.58926 log CFU / ml and 3.02 ± 0.38206 log CFU / ml. Conclusion: In this study, found that there was an effect of giving turmeric infusion and turmeric juice (Curcuma domestica val) on Staphylococcus aureus growth and there was an effect of giving multilevel doses of turmeric infusion and turmeric juice (Curcuma domestica val) on Staphylococcus aureus growth through invitro.

scholarly journals Uji Daya Hambat Air Perasan Buah Jeruk Nipis (Citrus aurantifolia s.) Terhadap Pertumbuhan Bakteri Staphylococcus Aureus Secara In Vitro

2013 ◽  
Vol 2 (1) ◽  
pp. 05 ◽  
Author(s):  
Abdul Razak ◽  
Aziz Djamal ◽  
Gusti Revilla
Keyword(s):  
Staphylococcus Aureus ◽  
Wound Healing ◽  
Contact Time ◽  
Experimental Methods ◽  
Control Group ◽  
Control Group Design ◽  
Citrus Aurantifolia ◽  
Group Design ◽  
Growth Of Bacteria

AbstrakJeruk Nipis (Citrus aurantifolia S.) merupakan salah satu tanaman obat keluarga yang banyak terdapat ditengah masyarkat dan banyak digunakan sebagai ramuan tradisional. Bagian yang sering digunakan adalah air perasannya, dengan salah satu manfaat dapat digunakan untuk menghilangkan jerawat serta penyembuhan luka agar tidak terjadi abses. Jerawat dan abses pada luka merupakan salah satu infeksi yang disebabkan oleh bakteri Staphylococcus aureus.Tujuan Penelitian ini adalah untuk mengetahui daya hambat air perasan buah jeruk nipis (Citrus aurantifolia S.) terhadap pertumbuhan bakteri Staphylococcus aureus secara invitro. Penelitian dilakukan dengan metoda eksperimental laboratorium dengan desain postest only control group design yang dilakukan di Laboratorium Mikrobiologi Fakultas Kedokteran Universitas Andalas.Hasil penelitian menunjukan bahwa air perasan buah jeruk nipis memiliki daya hambat terhadap pertumbuhan bakteri Staphylococcus aureus dengan berbagai konsentrasi yaitu 25%, 50%, 75%, dan 100% dan terdapat pengaruh lama kontak terhadap pertumbuhan bakteri dimana bakteri tidak tumbuh seteleh kontak 5 menit pertama dan diikuti menit-menit berikutnya dengan air perasan buah jeruk nipis konsentrasi 100%. Jadi, semakin tinggi konsentrasi air perasan buah jeruk nipis dan semakin lama kontak dengan bakteri Staphylococcus aureus maka daya hambatnya semakin baik.Kata kunci: Uji Daya Hambat, Air Perasan Buah Jeruk Nipis, Staphylococcus aureus.Abstract Lime (Citrus aurantifolia S.) is kind of family’s herbal medicine, most using in the community is widely used as a traditional herb. The most common used part is the lime fruit squeeze with one of the function is used for removing acne and wound healing to prevent the form of abscess. Pimples and abscesses of the wound is one of the infections caused by the bacterium Staphylococcus aureus.The purpose of this study was to determine the inhibition of lime fruit (Citrus aurantifolia S.) squeeze towards the growth of the bacteria Staphylococcus aureus in vitro condition. The study was conducted with laboratory experimental methods to the design of control group design postest only performed at the Laboratory of Microbiology Faculty of Medicine, University of Andalas.The results showed that the lime fruit (Citrus aurantifolia S.) squeeze has the ability to inhibite the bacterial growth of Staphylococcus aureus with various concentrations of 25%, 50%, 75%, and 100% and there is the effect of contact time on the growth of bacteria which the bacteria do not grow after contact the first 5 minutes and the next minute followed by lime fruit squeeze with 100% concentration lime fruit squeeze. Thus, the higher the concentration of lime fruit squeeze and the longer the contact with the bacteria Staphylococcus aureus is the better towards.Keywords:Inhibition test, The Lime Fruit Squeeze, Staphylococcus Aureus.

POTENSI EKSTRAK DAUN TANAMAN KARAMUNTING (Melastoma malabathricum L.) DI DAERAH KALIMANTAN SEBAGAI ANTIBAKTERI Staphylococcus aureus

2018 ◽  
Vol 4 (1) ◽  
pp. 36
Author(s):  
Rakhmadhan Niah ◽  
Riki Nirwan Baharsyah
Keyword(s):  
Staphylococcus Aureus ◽  
Bacterial Infection ◽  
In Vitro Studies ◽  
Plant Leaf ◽  
Extract Concentration ◽  
Melastoma Malabathricum ◽  
Agar Method ◽  
Microbiology Research ◽  
Growth Of Bacteria

The year 2008 recorded the death toll reached 16,769 soul due to infection. Infection is one of the diseases caused by bacteria or parasites. Staphylococcus aureus is one of the bacteria causes infection of the skin that is often the case in Indonesia. Staphylococcus aureus bacterial infection can be treated naturally, one of the plants that can be utilized is plant karamunting. Plant leaf karamunting (Melastoma malabathricum l.) contain flavonoids and alkaloids that have activity as antibacterial. The purpose of this research is to know the power of drag karamunting folium of extract against the growth of Staphylococcus aureus. In vitro studies were conducted with diffusion agar method. The extraction of leaf maceration method done with karamunting solvent ethanol 96%. Concentration of karamunting folium of extract used are: 25%, 50%, 75%, and 100%. Microbiology research results indicate that karamunting folium of extract have drag against the growth of bacteria Staphylococcus aureus with extract concentration 50% yield of 5.34 mm; the concentration of extract 75% of 9.40 mm; the concentration of extract 100% of 12.43 mm.

scholarly journals Dalbavancin, Vancomycin and Daptomycin Alone and in Combination with Cefazolin against Resistant Phenotypes of Staphylococcus aureus in a Pharmacokinetic/Pharmacodynamic Model

Antibiotics ◽  
2020 ◽  
Vol 9 (10) ◽  
pp. 696 ◽  
Author(s):  
Jacinda C. Abdul-Mutakabbir ◽  
Razieh Kebriaei ◽  
Kyle C. Stamper ◽  
Zain Sheikh ◽  
Philip T. Maassen ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Bactericidal Activity ◽  
Inhibitory Concentration ◽  
Pharmacodynamic Model ◽  
In Vitro Tests ◽  
Beta Lactam ◽  
Fold Reduction ◽  
The One ◽  
Time Kill

The most efficacious antimicrobial therapy to aid in the successful elimination of resistant S. aureus infections is unknown. In this study, we evaluated varying phenotypes of S. aureus against dalbavancin (DAL), vancomycin (VAN), and daptomycin (DAP) alone and in combination with cefazolin (CFZ). The objective of this study was to observe whether there was a therapeutic improvement in adding a beta-lactam to a glycopeptide, lipopeptide, or a lipoglycopeptide. We completed a series of in vitro tests including minimum inhibitory concentration testing (MIC) of the antimicrobials in combination, time-kill analysis (TKA), and a 168 h (7-day) one-compartment pharmacokinetic/pharmacodynamic (PK/PD) model on two daptomycin non-susceptible (DNS), vancomycin intermediate S. aureus strains (VISA), D712 and 6913. Results from our MIC testing demonstrated a minimum 2-fold and a maximum 32-fold reduction in MIC values for DAL, VAN, and DAP in combination with CFZ, in contrast to either agent used alone. The TKAs completed on four strains paralleled the enhanced activity demonstrated via the combination MICs. In the one-compartment PK/PD models, the combination of DAP plus CFZ or VAN plus CFZ resulted in a significant (p < 0.001) improvement in bactericidal activity and overall reduction in CFU/ml over the 7-day period. While the addition of CFZ to DAL improved time to bactericidal activity, DAL alone demonstrated equal and more sustained overall activity compared to all other treatments. The use of DAL alone, with or without CFZ and the combinations of VAN or DAP with CFZ appear to result in increased bactericidal activity against various recalcitrant S. aureus phenotypes.

scholarly journals Evaluation of the bending strength of rigid internal fixation with absorbable and metallic screws in mandibular ramus sagittal split osteotomy: in vitro study

2003 ◽  
Vol 17 (3) ◽  
pp. 267-272 ◽  
Author(s):  
Petrus Pereira Gomes ◽  
Rubens Guimarães Filho ◽  
Renato Mazzonetto
Keyword(s):  
Internal Fixation ◽  
Bending Strength ◽  
Pearson Correlation ◽  
In Vitro Study ◽  
Mandibular Ramus ◽  
Sagittal Split Osteotomy ◽  
Group I ◽  
Strength Tests ◽  
Student’S T

The aim of this study was to evaluate, in vitro, the bending strength of internal fixation with absorbable and metallic screws in mandibular ramus sagittal split osteotomy in sheep hemimandibles. The screws were inserted as lag screws, with an inverted "L" configuration, and the set was submitted to bending strength tests. The load and displacement of the peak and final load averages were, respectively, 18.45 kgf, 8.19 mm and 14.38 kgf for Group I, and 16.67 kgf, 6.73 mm and 13.98 kgf for Group II. The results were submitted to statistical analysis by Student’s t test and by the Pearson correlation analysis. The groups showed no statistically significant differences, indicating the feasibility of both for osteosynthesis in mandibular ramus sagittal split osteotomies.

scholarly journals Pengaruh Ozonated Water sebagai Antiseptik dalam Menghambat Pertumbuhan Staphilococcus Aureus (in vitro)

2012 ◽  
Vol 19 (1) ◽  
pp. 25
Author(s):  
Yulita Kristanti ◽  
D. Dessy
Keyword(s):  
Staphylococcus Aureus ◽  
Antibacterial Effect ◽  
Negative Control ◽  
Strong Negative Correlation ◽  
Group I ◽  
Significant Difference ◽  
Group Ii ◽  
One Way Anova ◽  
Ozonated Water

Latar Belakang. Penelitian seputar ozonazed water akhir-akhir ini cukup banyak diminati karena bahan ini mempunyai potensi antibakteria yang menjanjikan. Tujuan Penelitian ini adalah untuk mengetahui pengaruh ozonated water pada pertumbuhan bakteri Staphylococcus Aureus. Metode Penelitian. Penelitian ini dilakukan dengan cara mencampurkan 1 ml larutan bakteri 106 CFU/ml dengan 10 ml ozonated water konsentrasi 4 ppm selama 10 detik (kelompok I), 20 detik (kelompok II), 30 detik  (kelompok III), dan 40 detik (kelompok IV), akuades (kontrol negatif) kemudian semua diencerkan dengan akuabides 10ml. selanjutnya dari masing-masing kelompok diambil 0,01 ml untuk ditanam pada MHA, inkubasi 24 jam pada suhu 370 C dalam anaerobic jar kemudian dilakikan perhitungan koloni. Data dianalisis dengan Avana satu jalur dilanjutkan dengan uji LSD. Hasil. Avana satu jalur memperlihatkan adanya perbedaan yang bermakna antar kelompok perlakuan. Uji LSD menunjukkan perbedaan rerarta yang bermakna (p<0,05) antar kelompok I, II, III, IV dengan kelompok V (akuedes) terdapat perbedaan rerata yang bermakna antara kelompok I dan kelompok VI (iod). Tidak terdapat perbedaan bermakna antara kelompok II, III, IV terdapat kelompok VI (oid). Uji korelasi Produk Momen Pearson menunjukkan adanya korelasi negatif yang sangat kuat. Kesimpulan. Ozonated Water 4 ppm memiliki daya antibakreri dalam menghambat pertumbuhan Staphylococcus Aureus. Semakin lama waktu kontak, daya anti bakterinya semakain besar. Background. Some previous research show that the antibacterial effect of ozonated water is very promi-sing. The aim of this study was to know the antibacterial effect of ozonated water on staphylococcus aureus. Method. One ml of 106 CFU/ ml S. aureus suspension was mixed with 10 ml ozonated water for 10 second (group I), 20 second (group II), 30 second (group III), 40 second (group IV)As negative control S. aureus was mixed with aquadest (group V), and as positive control S. aureus was mixed with iod (groupVI). Furthermore, 0,01 ml from each group was cultivated on MHA, incubated for 24 hours-37C followed by colony caunting. Data was analyzed using one way anova followed by LSD. Result. One way anova show significant difference among the group and LSD test show significant mean different between group I, II, III, IV, and V. Significant difference can also be seen between group I and V. No significant difference between group II, III, IV and VI. Product momen test show strong negative correlation. Conclusion. Ozonated water 4 ppm has antibacterial effect on S. aureus. The longer the contact time, the stronger the antibacterial effect.

scholarly journals Remineralizing Effect of Xilitol, Juniperus Communis and Camellia Sinensis Added to a Toothpaste: An In Vitro Study

2018 ◽  
pp. 97-105
Author(s):  
Sandra I. Jiménez-Gayosso DDS ◽  
Edith Lara-Carrillo DDS, MSc, PhD ◽  
Rogelio J. Scougall-Vilchis DDS, MSc, PhD ◽  
Raúl A. Morales-Luckie BS Chem, PhD ◽  
Carlo E. Medina Solís DDS, MSc ◽  
...  
Keyword(s):  
Camellia Sinensis ◽  
Pearson Correlation ◽  
In Vitro Study ◽  
Control Group ◽  
Sem Images ◽  
Juniperus Communis ◽  
Pearson Correlation Test ◽  
Pre Treatment ◽  
The One

The aim of this study was to explore the remineralizing effect of toothpastes based on Xilitol, Camellia Sinensis and Juniperus Communis. An in vitro experimental study was carried out in an 18 human premolars sample, which were treated with one of the 3 evaluated toothpastes and a control fluoride one. The atomic percentages of Ca and P were evaluated by Energy Dispersive X-ray Spectroscopy (EDS). In addition, the enamel surface of treated teeth was visualized by Scanning Electron Microscopy (SEM). The evaluations were carried out in three stages: pre-treatment, after an artificial demineralization process and after the treatment with the toothpastes. In the statistical analysis, the one-way ANOVA and Pearson correlation tests were used. Xilitol and Juniperus Communis showed the greatest gain of P ions compared to the control group (p<0.01). As for Ca, the group treated with xylitol-based toothpaste showed more ion gain compared with the control group (p<0.01). In the Pearson correlation test between Ca and P, statistically significant correlations were observed in all groups (p<0.01), ranging between r=0.7413 (Xylitol Group) and r=0.9510 (Control Group). We concluded that Xylitol paste showed the highest remineralizing property, both in the EDS analysis and in the SEM images.

Isolation of Phages and Study of their In vitro Efficacy on Staphylococcus aureus Isolates Originating from Bovine Subclinical Mastitis

2021 ◽  
Author(s):  
A.S. Srujana ◽  
J. Sonalika ◽  
D.S. Akhila ◽  
M.R. Juliet ◽  
P. Sheela
Keyword(s):  
Staphylococcus Aureus ◽  
Bovine Mastitis ◽  
Subclinical Mastitis ◽  
Global Market ◽  
Host Susceptibility ◽  
Health Concept ◽  
Disk Diffusion Assay ◽  
Potential Strategy ◽  
The One

Background: India leads the global market in milk production. However, bovine mastitis, which is the mammary gland inflammation in dairy cattle characterized by physical, chemical, bacteriological changes in milk results in commercial losses. Staphylococcus aureus, is the major causative agent. The treatment of mastitis caused by this pathogen is mainly by antibiotics. Emphasizing on the one health concept, phage therapy is an appropriate alternative to antibiotic. The present study was aimed to isolate and characterize bacteriophages against Staphylococcus aureus associated with bovine mastitis.Methods: Thirty two isolates of S. aureus obtained from the milk of mastitis cows were characterized by phenotypic and genotypic methods. Antibiotic susceptibility of the isolates was carried out by disk diffusion assay. Milk and cow shed wastewater were used for phage isolation. Phages were characterized by host susceptibility and RAPD assay.Result: Nineteen phages were isolated from the cowshed waste water. All the milk samples showed negative for the presence of phage. The phage 24 (A2) which had the broadest host range, was selected for the CFU drop assay. The phage was able to clear the lawn of S. aureus culture when grown on agar at different time points thus indicating that topical application of this phage would be a potential strategy to control S. aureus infection leading to mastitis. This study provides a basis to continue the exploration of the potential of PSA2 phage as a candidate for the treatment of Staphylococcal mastitis.

PENGARUH PEMBERIAN EKSTRAK ETHANOL BIJI BUAH PINANG (ARECA CATECHU L.) TERHADAP PERTUMBUHAN STAPHYLOCOCUS AUREUS SECARA IN VITRO

2018 ◽  
Vol 6 (1) ◽  
pp. 10-19 ◽  
Author(s):  
MIftakhul Baiti ◽  
Solha Elfrida ◽  
Lipinwati Lipinwati
Keyword(s):  
Staphylococcus Aureus ◽  
Ethanol Extract ◽  
Positive Control ◽  
Negative Control ◽  
Test Statistic ◽  
Group I ◽  
Areca Catechu ◽  
Amoxicillin Clavulanate ◽  
Post Hoc

ABSTRACT Background: Infectious disease is known as a global concern because of the irrational, excessive and long term use of antibiotics especially in Staphylococcus aureus infection. The unecessarily use of antibiotics can creat a resistance issue such as MSSA, MRSA, VISA and VRSA. So as a new alternative that is being developed in medicine, herbal plants are used. Areca nut (Areca catechu. L) is a herbal plant that is found in Indonesia, especially in Province of Jambi, betel nut is one of the best in the world. The aim of this study are to investigate phytochemical components and inhibition effect Staphylococcus aureus ATCC 25923 using dry ethanol extract of betel nuts at concentrations 20%, 30%, 40% and 50% in vitro. Method: Antibacterial sensitivity tests against Staphylococcus aureus ATCC 25923 were performed using dry ethanol extract of betel nuts (Areca catechu. L) with various concentrations on each group. Group I is treated nut with a concentration of 20%, Group II with a concentration of 30%, Group III with a concentration of 40%, Group IV with a concentration of 50%, the group V as a negative control (distilled) and group VI as a positive control that was given amoxicillin clavulanate 30μg. Then the inhibitory effects of these treatments are measeure and classified by the Davis and Stout classification in 1971. The data analysis began with Saphiro Wilk test and then with levent test statistic. Because distributed data is not normal, the analysis continued with Kruskal Wallis test and Post Hoc test. Results: Results of this study showed that the ethanol extract of betel nuts can inhibit the growth of S. aureus, which is a concentration of 20% with a diameter of 13,63mm, concentration of 30% with a diameter of 15mm, concentration of 40% with a diameter of 15,5mm, concentration of 50% with a diameter of 14,7mm compared to the positive control 30μg amoxicillin clavulanate in inhibiting the growth of S. aureus with a diameter of 34,25mm. Conclusion: The ethanol  extract of betel nuts can inhibit the growth of Staphylococcus aureus in vitro. Areca seed extract with concentration of 40% is the optimum concentration to inhibit the growth of Staphylococcus aureus. Keywords: Staphylococcus aureus, Areca catechu. L,  Sensitivity Test.   ABSTRAK Latar Belakang : Penyakit infeksi merupakan masalah yang menjadi perhatian global, oleh karena penggunaan antibiotik yang irasional, berlebihan dan dalam jangka waktu yang lama, terurama infeksi yang disebabkan oleh Staphylococcus aureus. Hal ini dapat menimbulkan masalah baru resistensi antibiotik seperti MSSA, MRSA, VISA dan VRSA. Maka sebagai alternatif baru yang sedang dikembangkan dalam pengobatan yaitu dengan menggunakan tanaman herbal. Pinang (Areca catechu. L) merupakan tanaman herbal yang banyak ditemukan di Indonesia terutama Propinsi Jambi, pinang ini merupakan salah satu pinang terbaik di dunia. Tujuan dari penelitian ini adalah untuk mengetahui komponen fitokimia dan daya hambat ekstrak ethanol biji buah pinang terhadap pertumbuhan Staphylococcus  aureus ATCC 25923 secara in vitro pada konsentrasi 20%, 30%, 40% dan 50%. Metode : Ekstrak ethanol biji buah pinang kering (Areca catechu. L) dilakukan uji sensitifitas antibakteri terhadap Staphylococcus  aureus ATCC 25923 dengan berbagai konsentrasi pada masing – masing kelompok. Kelompok I yaitu perlakuan pinang dengan konsentrasi 20%, kelompok II dengan konsentrasi 30%, kelompok III dengan konsentrasi 40%, kelompok IV dengan konsentrasi 50%, kelompok V sebagai kontrol negatif (Aquades) dan kelompok VI sebagai kontrol positif dengan diberikan Amoksisilin Klavulanat 30µg. Kemudian diukur efek inhibisi dari perlakuan tersebut dan digolongkan berdasarkan penggolongan Davis and Stout 1971. Analisis data diawali dengan uji Saphiro-Wilk dan dilanjutkan dengan uji Levene, oleh karena data terdistribusi tidak normal maka dilakukan uji Kruskal Wallis  dan uji  Post Hoc. Hasil : Hasi penelitian menunjukkan bahwa ekstrak ethanol  biji buah pinang dapat menghambat pertumbuhan S. aureus, yaitu konsentrasi 20%  dengan diameter 13,63mm, konsentrasi 30%  dengan diameter 15mm, konsentrasi 40%  dengan diameter 15,5mm, konsentrasi 50% dengan diameter 14,7mm. Terdapat pengaruh  Areca catechu. L dalam menghambat pertumbuhan Staphylococcus  aureus ATCC 25923. Kesimpulan : Ekstrak ethanol biji buah pinang dapat menghambat pertumbuhan Staphylococcus aureus secara in vitro. Konsentrasi ekstrak biji buah pinang 40% merupakan konsentrasi optimum dalam menghambat pertumbuhan Staphylococcus aureus. Kata Kunci : Staphylococcus aureus, Areca catechu. L,  Uji Sensitifitas.

Clofoctol-Induced Ultrastructural Changes In Staphylococcus Aureus

1999 ◽  
Vol 5 (S2) ◽  
pp. 1138-1139
Author(s):  
Beverly E. Maleeff ◽  
Stewart C. Pearson ◽  
David J. Payne ◽  
Timothy K. Hart
Keyword(s):  
Staphylococcus Aureus ◽  
Food Poisoning ◽  
Ultrastructural Changes ◽  
Upper Respiratory Tract ◽  
Butyl Phenol ◽  
Dividing Cells ◽  
Life Threatening ◽  
In Vitro Effects ◽  
Tract Infections

Clofoctol [2-(2,4-dichlorobenzyl)-4-(tetramethyl-l,l,3,3-butyl) phenol] is a synthetic antibacterial compound with activity against both Gram-positive1 and Gram-negative2 microorganisms. Although the specific mechanism of Clofoctol action has not been fully elucidated, it is reported to alter the permeability of the cytoplasmic membrane in Bacillus subtilis, and is used clinically to treat upper respiratory tract infections in humans. Staphylococcus aureus is a major human Grampositive pathogen that causes a variety of human diseases ranging from localized skin suppuration and food poisoning to life threatening presentations such as septicemia and endocarditis. Several clinical isolates of S. aureus have recently been identified that are resistant to all currently available antibacterial therapies. Consequently, the identification of new antimicrobial targets in this organism is of paramount importance. The purpose of this study was to investigate the in vitro effects of Clofoctol on S. aureus.Ultrastructural examination of S. aureus revealed a population of actively dividing cells.

scholarly journals Strategies to Prevent Biofilm Infections on Biomaterials: Effect of Novel Naturally-Derived Biofilm Inhibitors on a Competitive Colonization Model of Titanium by Staphylococcus aureus and SaOS-2 Cells

2020 ◽  
Vol 8 (3) ◽  
pp. 345 ◽  
Author(s):  
Inés Reigada ◽  
Ramón Pérez-Tanoira ◽  
Jayendra Z. Patel ◽  
Kirsi Savijoki ◽  
Jari Yli-Kauhaluoma ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Mammalian Cells ◽  
Experimental Models ◽  
High Serum ◽  
Clinical Scenario ◽  
Implanted Medical Devices ◽  
Potential Applicability ◽  
Colonization Model ◽  
The One

Biofilm-mediated infection is a major cause of bone prosthesis failure. The lack of molecules able to act in biofilms has driven research aimed at identifying new anti-biofilm agents via chemical screens. However, to be able to accommodate a large number of compounds, the testing conditions of these screenings end up being typically far from the clinical scenario. In this study, we assess the potential applicability of three previously discovered anti-biofilm compounds to be part of implanted medical devices by testing them on in vitro systems that more closely resemble the clinical scenario. To that end, we used a competition model based on the co-culture of SaOS-2 mammalian cells and Staphylococcus aureus (collection and clinical strains) on a titanium surface, as well as titanium pre-conditioned with high serum protein concentration. Additionally, we studied whether these compounds enhance the previously proven protective effect of pre-incubating titanium with SaOS-2 cells. Out of the three, DHA1 was the one with the highest potential, showing a preventive effect on bacterial adherence in all tested conditions, making it the most promising agent for incorporation into bone implants. This study emphasizes and demonstrates the importance of using meaningful experimental models, where potential antimicrobials ought to be tested for the protection of biomaterials in translational applications.

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