The Effectiveness of Chocolate in Reducing the Number of Methicillin-Resistant Staphylococcus aureus Colonies in Rattus norvegicus

2021 ◽  
Vol 19 (2) ◽  
pp. 154-161
Author(s):  
Edy Suwandi ◽  
Ari Nuswantoro ◽  
Sugito Sugito ◽  
Desi Wahyumarniasari ◽  
Muhammad Reza Setiawan ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Rattus Norvegicus ◽  
Positive Emotions ◽  
Methicillin Resistant Staphylococcus Aureus ◽  
Short Chain Fatty Acids ◽  
Control Group ◽  
Adequate Intake ◽  
Methicillin Resistant ◽  
Human Digestive System ◽  
Epithelial Wall

Chocolate has long been understood to provide positive emotions and a good mood if consumed in moderation. Chocolate contains prebiotics naturally from its constituent ingredients produced during the production process. Prebiotics, frequently oligosaccharides, are substances which cannot be metabolized by the human digestive system but can be employed by a group of bacteria in the gut, understood as probiotics. The positive relationship among them provides benefits for the host in eliminating pathogens. One of the well-known pathogens which frequently cause infection either in the community or in hospitals is methicillin-resistant Staphylococcus aureus (MRSA). Since it was first identified in 1960, MRSA has caused health problems until today. Research conducted on two groups of Rattus norvegicus infected with MRSA and then fed chocolate revealed a decrease in the average number of bacterial colonies on the skin compared to the control group. In the group fed chocolate at a dose of 50 mg/day, the bacterial colonies decreased to 1.28 x 108 CFU/cm2 in 7 days, lower than in the control group (1.46 x 108 CFU/cm2) at the same time. While those fed 75 mg/day chocolate decreased to 2.70 x 107 CFU/cm2 and the three groups were significantly different (0.000<0.05). Prebiotics fermented by probiotics release short-chain fatty acids (SCFA), which compete with the pathogens for attaching to the epithelial wall so that pathogens lose space and nutrients to survive. However, the adverse effect of chocolate may occur because it contains sugar which is a nutrient for bacteria, but if the balance of normal flora and adequate intake of prebiotics are administered, the pathogen could be eliminated.

COMMUNITY ACQUIRED METHICILLIN RESISTANT STAPHYLOCOCCUS AUREUS HAND INFECTIONS: A SOUTH PACIFIC PERSPECTIVE — CHARACTERISTICS AND IMPLICATIONS FOR ANTIBIOTIC COVERAGE

Hand Surgery ◽  
2012 ◽  
Vol 17 (03) ◽  
pp. 317-324 ◽  
Author(s):  
Derek Buchanan ◽  
Wolfgang Heiss-Dunlop ◽  
Jon A. Mathy
Keyword(s):  
Staphylococcus Aureus ◽  
Antibiotic Treatment ◽  
Methicillin Resistant Staphylococcus Aureus ◽  
The United States ◽  
Control Group ◽  
Methicillin Resistant ◽  
Empiric Treatment ◽  
Sensitivity Data ◽  
Culture Positive ◽  
Antibiotic Coverage

Purpose: Community acquired methicillin resistant Staphylococcus aureus (CA-MRSA) infections are reported to be increasing worldwide. In the United States when rates exceed 15% empiric treatment is suggested. The aim of our study was to determine local rates and treatment of CA-MRSA within our region. Methods: Nine hundred and forty-two patients were admitted to our service during a six-year period with culture-positive hand infections identified from operative cultures at the time of surgery. Results: Sixty-six (7.0%) patients had CA-MRSA positive cultures identified. Thirty-two (48.5%) patients were noted to have remained on antibiotic treatment that did not reflect their MRSA positive status after cultures returned. Despite this, re-admission and re-operation rates were low and comparable to our non-MRSA control group. Conclusions: Within our CA-MRSA group, current rates do not support automatic empiric treatment for CA-MRSA. Based on sensitivity data, co-trimoxazole and intravenous vancomycin are appropriate and effective antibiotic treatment within our region. Our data supports the importance of drainage of pyogenic infections in helping to resolve complicated hand infections.

scholarly journals Utilizing Pharmacy Records to Assess Antibiotic Prescribing Patterns on the Incidence of Community-Acquired Methicillin-Resistant Staphylococcus aureus Infections in Children

2007 ◽  
Vol 12 (2) ◽  
pp. 91-101
Author(s):  
Peter N. Johnson ◽  
Robert P. Rapp ◽  
Christopher T. Nelson ◽  
J.S. Butler ◽  
Sue Overman ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Antibiotic Therapy ◽  
Methicillin Resistant Staphylococcus Aureus ◽  
Prescribing Patterns ◽  
Control Group ◽  
Antibiotic Prescribing ◽  
Antibiotic Exposure ◽  
Pharmacy Records ◽  
Methicillin Resistant ◽  
Prior Antibiotic Therapy

OBJECTIVE To assess the effect of prior antibiotic therapy on the incidence of community-acquired methicillin-resistant Staphylococcus aureus (CA-MRSA) infections in children. METHODS This was a concurrent and retrospective review of antibiotic records for children &lt; 18 years of age with documented CA-MRSA infection identified between January 1, 2004, and December 31, 2005. Antibiotic records were compared against a control group. The primary outcome was the incidence of CA-MRSA using linear regression as a function of age and prior antibiotic therapy (i.e., 3 months prior to admission). Secondary objectives included a comparison of antibiotic courses and classes and a description of antibiotic susceptibilities in patients with CA-MRSA RESULTS Data from 26 patients were included. Nine out of 51 patients (18%) with CA-MRSA were included. Another 17 children were enrolled in the control group. The median age was approximately 1.75 years (0.08–14 years) in the CA-MRSA group versus 2.75 years (0.005-15 years) in the control group. A statistical difference was noted in the number of patients with prior antibiotic exposure between the CA-MRSA and control group, 8 (88.9%) versus 6 (35.3%), respectively (P = .01). Antibiotic exposure was found to be a significant independent risk factor (P = .005; 95% CI, 0.167–0.846) for the development of CA-MRSA. The interaction between antibiotic exposure and age &lt; 3 was the most significant predictor of CA-MRSA (P = .019; 95% CI, 0.139–1.40). CONCLUSIONS Prior antibiotic therapy in patients &lt; 3 years of age was associated with a significant risk of developing CA-MRSA. A comprehensive assessment of CA-MRSA patients should include objective methods of measuring prior antibiotic exposure such as pharmacy records.

scholarly journals Eradication of a Mature Methicillin-Resistant Staphylococcus aureus (MRSA) Biofilm From Acrylic Surfaces

2013 ◽  
Vol 24 (5) ◽  
pp. 487-491 ◽  
Author(s):  
Karen Tereza Altieri ◽  
Paula Volpato Sanitá ◽  
Ana Lucia Machado ◽  
Eunice Teresinha Giampaolo ◽  
Ana Cláudia Pavarina ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Microwave Irradiation ◽  
Sodium Hypochlorite ◽  
Biofilm Formation ◽  
Methicillin Resistant Staphylococcus Aureus ◽  
Acrylic Resin ◽  
Positive Control ◽  
Chlorhexidine Gluconate ◽  
Control Group ◽  
Methicillin Resistant

Methicillin-resistant Staphylococcus aureus (MRSA) can grow as structured biofilm in different surfaces, including oral mucosa and denture surfaces. Such biofilms can be released into the oral fluids and aspirated, causing systemic infections such as aspiration pneumonia. This study evaluated the efficacy of two disinfectant solutions and microwave irradiation in disinfecting acrylic specimens contaminated with MRSA biofilm. Thirty-six acrylic specimens were made, sterilized and contaminated with MRSA (107 cfu/mL). After incubation (37 °C/48 h), the specimens were divided into 4 groups: not disinfected (positive control); soaking in 1% sodium hypochlorite for 10 min; soaking in 2% chlorhexidine gluconate for 10 min; and irradiating by microwave for 3 min at 650 W. The viability of cells was evaluated by XTT reduction method. All specimens from the positive control group showed biofilm formation after 48 h incubation. The mean absorbance value of the control specimens was 1.58 (OD at 492 nm). No evidence of biofilm formation was observed on specimens after the disinfection methods. Disinfection by soaking in 1% sodium hypochlorite and 2% chlorhexidine gluconate and irradiating by microwaves resulted in 100% reduction of MRSA biofilm metabolism. The use of chemical solutions and microwave irradiation was shown to be effective for eradicating mature MRSA biofilms on acrylic resin specimens.

scholarly journals Immunomodulatory Effect of Nigella sativa Extract through the Improvement of IL-1β Level in Balb-c Mice Infected by Methicillin-resistant Staphylococcus aureus

2020 ◽  
Vol 31 (2) ◽  
pp. 85
Author(s):  
Galuh Yulieta Nitihapsari ◽  
Octavia Permata S ◽  
Miko Ferine
Keyword(s):  
Staphylococcus Aureus ◽  
Methicillin Resistant Staphylococcus Aureus ◽  
Nigella Sativa ◽  
Statistical Tests ◽  
The Body ◽  
Control Group ◽  
Control Group Design ◽  
Methicillin Resistant ◽  
Anova Test ◽  
Black Cumin

<p>Nigella sativa (NS) has been used for many years as an anti-bacterial herbal treatment, such as Methicillin-resistant Staphylococcus aureus, but the mechanism in bacterial elimination is still unknown. IL-1β is a proinflammatory cytokine that helps the immune system eliminate microbes when it enters the body. The purpose of this study was to prove the immunomodulatory effects of Nigella sativa extract through increased IL-1β in dealing with MRSA infections. The design of this study was post-test only control group design using 25 male Balb-c mice infected with MRSA and randomly divided into five groups. Group K was infected with MRSA without being treated. All treatment groups were given NS extracts in different doses for 7 days before being infected with MRSA. P1 was given N. sativa extract 0.05ml, P2 (was given NS extract 0.25ml, P3 was given 0.5ml NS extract, and P4 was given 0.75ml NS. On the 8th day, blood was taken from the retroorbital plexus for IL-1β level examination using ELISA. Statistical tests were done using the One Way ANOVA test. The results showed the mean of IL-1β levels in group K was 11.65ng/L, P1 was 14.07ng/L, P2 was 16.66ng/L, P3 was 18.54ng/L, and P4 was 19.49ng/L which showed an increase in IL-1β levels along with the addition of black cumin dose although there was no difference between groups (p=0.578: ANOVA test). Nigella sativa extract is not proven effective in increasing IL-1β levels of Balb-c mice infected with MRSA.</p>

scholarly journals Treatment of experimental endocarditis due to methicillin-susceptible or methicillin-resistant Staphylococcus aureus with trimethoprim-sulfamethoxazole and antibiotics that inhibit cell wall synthesis.

1995 ◽  
Vol 39 (4) ◽  
pp. 953-957 ◽  
Author(s):  
M de Górgolas ◽  
P Avilés ◽  
C Verdejo ◽  
M L Fernández Guerrero
Keyword(s):  
Staphylococcus Aureus ◽  
Methicillin Resistant Staphylococcus Aureus ◽  
Pneumocystis Carinii ◽  
Control Group ◽  
Cell Wall Synthesis ◽  
Control Groups ◽  
Methicillin Resistant ◽  
The Mean ◽  
High Concentrations ◽  
Overall Mortality

Using two strains of Staphylococcus aureus, one susceptible and one heterogeneously resistant to methicillin, for which MICs and MBCs of trimethoprim-sulfamethoxazole (TMP-SMX) were 0.06 and 0.06 micrograms/ml and 0.06 and 0.25 microgram/ml, respectively (concentrations are those of TMP), we studied the efficacies of TMP-SMX and cloxacillin, teicoplanin, and vancomycin for treatment of experimental staphylococcal endocarditis. Rabbits were treated with dosages of TMP-SMX selected to achieve concentrations in serum equivalent to that obtained in humans treated for Pneumocystis carinii pneumonia. The overall mortality rate of rabbits treated with TMP-SMX was 84% at day 3, not different from that of the control groups (P > 0.1). No sterile vegetations were observed to be present in control groups or in animals treated with TMP-SMX. However, 26, 60, and 75% of rabbits treated with teicoplanin, cloxacillin, and vancomycin, respectively, showed sterile vegetations. For methicillin-susceptible S. aureus (MSSA), the mean vegetation counts were not significantly different between the control group and the group treated with TMP-SMX (P > 0.1). For methicillin-resistant S. aureus (MRSA), treatment with TMP-SMX was more effective than no therapy, decreasing the number of organisms in vegetations (P < 0.01). For both strains, therapy with cloxacillin and therapy with teicoplanin or vancomycin were significantly more effective than therapy with TMP-SMX. Despite high concentrations of teicoplanin in serum which exceeded MBCs for staphylococci more than 50 times at the peak and 10 times at the trough, therapy with cloxacillin or vancomycin was superior to therapy with teicoplanin against both MSSA and MRSA. These data do not support the use of TMP-SMX in treatment of endocarditis and other severe staphylococcal infections with high bacterial counts.

Methicillin‐resistant Staphylococcus aureus in urban Norway rat ( Rattus norvegicus ) populations: Epidemiology and the impacts of kill‐trapping

2018 ◽  
Vol 66 (3) ◽  
pp. 343-348 ◽  
Author(s):  
Michael J. Lee ◽  
Kaylee A. Byers ◽  
Christina M. Donovan ◽  
Erin Zabek ◽  
Craig Stephen ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Rattus Norvegicus ◽  
Methicillin Resistant Staphylococcus Aureus ◽  
Methicillin Resistant ◽  
Norway Rat

scholarly journals Nasal carriage of methicillin resistant Staphylococcus aureus among medical students of a private institution in Ilishan-Remo, Ogun State, Nigeria

2020 ◽  
Vol 21 (4) ◽  
pp. 311-317
Author(s):  
T.A. Ajani ◽  
C.J. Elikwu ◽  
V. Nwadike ◽  
T. Babatunde ◽  
C.G. Anaedobe ◽  
...  
Keyword(s):  
Risk Factors ◽  
Staphylococcus Aureus ◽  
Medical Students ◽  
Methicillin Resistant Staphylococcus Aureus ◽  
Health Workers ◽  
Meca Gene ◽  
Nasal Carriage ◽  
Control Group ◽  
Study Group ◽  
Methicillin Resistant

Background: Nasal carriage of methicillin resistant Staphylococcus aureus (MRSA) is a major factor for its transmission especially from the health workers and medical students to their patients. There are a number of published data on the prevalence of MRSA among health workers but data on nasal colonization of medical students by MRSA are sparse in Nigeria. The objectives of this study are to determine the prevalence of nasal carriage of MRSA among medical students of the Ben Carson School of Medicine, Babcock University, Ilishan-Remo, Ogun State, Nigeria, and identify risk factors associated with this nasal carriage. Methodology: A case control study involving 100 clinical (study group) and 100 pre- clinical (control group) medical students was undertaken between March 2018 and October 2019. Structured questionnaire was administered to obtain socio-demographic information and potential risk factors. Nasal swab was collected from each student and cultured for isolation of S. aureus by standard microbiology techniques. Phenotypic MRSA was detected by the cefoxitin 30μg disk diffusion method according to the guideline of Clinical and Laboratory Standards Institute. The mecA gene was detected by conventional polymerase chain reaction (PCR) assay. Results: The prevalence of S. aureus nasal carriage among the study group was 14% (14/100) while the prevalence among the control group was 6% (6/100) (p=0.097). The prevalence of phenotypic MRSA among the study group was 4% (4/100) and 1% (1/100) among the control group (p=0.3687) while mecA gene was detected in 3 of the 4 (75%) phenotypic MRSA positive study participants and in the only (100%) phenotypic MRSA positive (1%) control group. Antibiotics usage without prescription, antibiotic treatment of common cold, and use of antibiotics in the previous one year, were significantly associated with MRSA carriage among the study group. Conclusion: Although the prevalence of nasal carriage of S. aureus and MRSA among clinical and pre-clinical medical students was not statistically significant, the risk factors identified with carriage of MRSA among the study group indicates the need for antimicrobial stewardship program to reduce carriage and transmission of MRSA by medical students. Keywords: methicillin resistant, Staphylococcus aureus, mecA gene, nasal carriage, medical students

scholarly journals The Effects of Thyme on IL-6 Level and the Bacterial Count in the Brain and Spleen of Mice Infected by Methicillin-Resistant Staphylococcus aureus (MRSA)

2020 ◽  
Vol 31 (1) ◽  
pp. 1
Author(s):  
Lisayani Prasetyowati ◽  
Muchlis Achsan Adji Sofro ◽  
Helmia Farida ◽  
Galuh Yulieta
Keyword(s):  
Staphylococcus Aureus ◽  
Bacterial Resistance ◽  
Methicillin Resistant Staphylococcus Aureus ◽  
Bacterial Count ◽  
Thymus Vulgaris ◽  
Control Group ◽  
Microbial Count ◽  
Methicillin Resistant ◽  
Post Test ◽  
The Brain

<p>The extensive and irrational use of antibiotics causes resistance problems such as Methicillin-Resistant Staphylococcus aureus (MRSA). Widespread bacterial resistance to the existing antibiotics promotes the importance of discovering antibacterial sources or modulating the immune response from natural ingredients. This study aimed to reveal the potential of thyme (Thymus vulgaris) extract in reducing IL-6 level and MRSA bacterial count in the brain and spleen of Balb c mice infected by MRSA. The design of this study was a randomized post-test control group. This study used 30 male BALB/c mice infected by MRSA and randomly divided into six groups. Measurement of IL-6 level was carried out using ELISA. The MRSA count was done by assessing the number of CFU per gram of tissue. There were no bacteria in the spleen tissue of all the groups. The IL-6 level in BALB/c mice infected with MRSA and treated with Thymus vulgaris was higher compared to those without Thymus vulgaris (p&lt;0,005). The greatest decrease in microbial count in the brain was among groups that were given the combination of thyme and amoxicillin. Thymus vulgaris extract can elevate the antibacterial effectiveness of amoxicillin. </p>

scholarly journals Treatment of experimentally induced diabetic wound infected with methicillin-resistant Staphylococcus aureus using Aloe vera, Apium graveolens, and Sauropus androgynus extracts in rats

2019 ◽  
pp. 99-106 ◽  
Author(s):  
Yos Adi Prakoso ◽  
Kurniasih Kurniasih ◽  
Agustina Dwi Wijayanti ◽  
Yuli Purwandari Kristianingrum
Keyword(s):  
Staphylococcus Aureus ◽  
Methicillin Resistant Staphylococcus Aureus ◽  
Aloe Vera ◽  
Apium Graveolens ◽  
Control Group ◽  
Diabetic Wound ◽  
Diabetic Ulcer ◽  
Methicillin Resistant ◽  
Group I ◽  
Skin Collagen

Background and Aim: One of the complications of diabetes mellitus is diabetic ulcer. Diabetic ulcer is commonly infected by infectious agents, especially methicillin-resistant Staphylococcus aureus (MRSA). This study aimed to evaluate the potential effects of alcoholic extracts of Aloe vera, Apium graveolens, and Sauropus androgynus on promoting wound healing in a diabetic wound infected with MRSA. Materials and Methods: A total of 60 male Sprague-Dawley rats (6 months old, weighing 250-300 g) were injected with 65 mg/kg body weight of streptozotocin to induce diabetes. On day 7, the backs of the rats were shaved, and two circular wounds (4 mm in diameter) were created on their back, which were infected with MRSA. The rats were divided into six groups: Group I = control, Group II = treated with cream base without extract, Group III = treated with 2% A. vera cream, Group IV = treated with 2% A. graveolens cream, Group V = treated with 2% S. androgynus cream, and Group VI = treated with 2% A. vera + 2% A. graveolens + 2% S. androgynus cream. The wounds were treated twice a day for 14 days. The data were collected on days 7 and 14. Results: The results showed that all three herbal extracts and their combination decreased wound area and percentage of the wound, increased tensile strength of skin, collagen deposition, vascular endothelial growth factor expression, and skin thickness, and depressed the C-reactive protein profile and cyclooxygenase-2 expression. Conclusion: A. vera, A. graveolens, and S. androgynus creams can be used as herbal therapies against diabetic wounds infected with MRSA, both as a single and combination treatment.

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