scholarly journals IDENTIFIKASI BAKTERI Staphylococcus aureus PADA PREPUTIUM DAN VAGINA KUDA (Equus caballus) (Identification of Staphylococcus aureus in Preputium and Vagina of Horses (Equus caballus))

2015 ◽  
Vol 9 (2) ◽  
Author(s):  
Yulina Rahmi ◽  
Darmawi Darmawi ◽  
Mahdi Abrar ◽  
Faisal Jamin ◽  
Fakhrurrazi Fakhrurrazi ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Equus Caballus ◽  
Nutrient Broth ◽  
Gram Positive ◽  
Gram Staining ◽  
Bright Yellow ◽  
Reaction Tube ◽  
The Media ◽  
The Village

This research aims to identify the Staphylococcus aureus (S. aureus) bacteria from preputium and vagina of horses. Five swabs preputium and 5 swabs vagina samples from 3-9 years olds horse in the village of Bebangka, Gelelungi, Reloop, and Kelapeng, Pegasing Aceh Tengah District were used in this study. Preputium and vagina swabs of horses were dipped into reaction tube containing Nutrient Broth (NB). Staphylococcus aureus was identified on manitol salt agar (MSA). Separated colony colored bright yellow on the media were tested for Gram staining, hemolysis, catalase, and sugar test (glucose and manitol). The result showed that the isolates growth on MSA were colored bright yellow, Gram positive, β hemolisis, and catalase positive. The isolates fermented manitol and glucose. Isolates identified from horses preputium and vagina showed the characteristic of S. aureus. In conclusion S. aureus bacteria were positively identified from all of swabs samples, both in preputium and vagina of horses.Key words: Staphylococcus aureus, horse, preputium, vagina

scholarly journals Identifikasi Staphylococcus aureus Pada Abon Sapi Di Pasar Pahing Kota Kediri

2019 ◽  
Vol 5 (2) ◽  
pp. 99-105
Author(s):  
Mastuti Widianingsih ◽  
Dian Catur Setyorini
Keyword(s):  
Staphylococcus Aureus ◽  
Gastrointestinal Tract ◽  
Manufacturing Process ◽  
Sampling Technique ◽  
Colony Morphology ◽  
Positive Staining ◽  
Dirty Hands ◽  
Gram Positive ◽  
Gram Staining ◽  
Fermentation Test

Contamination of processed beef foods such as abon can be caused by various types of microbes, one of which is Staphylococcus aureus. Staphylococcus aureus can cause various infections, both on the skin, gastrointestinal tract, or endocarditis. The objective of this research was to determine the presence of Staphylococcus aureus in beef abon sold in Pahing Market, Kediri. Abon used is non-branded beef abon which is as many as 10 samples obtained by total sampling technique. Samples were tested by observation of colony morphology through Gram staining, mannitol fermentation test, catalase and coagulase test, and acetoin test. The samples were inoculated on Broth NaCl (ink. 24 hour-37°C), then inoculated on MSA (ink. 24 hour-37°C), and VP (ink. 2x24 hours-37°C). Catalase and coagulase tests were carried out by taking colonies on MSA media. The results showed that there were 9 abon samples contaminated with Staphylococcus aureus as indicated by Gram positive staining results, positive (perfect) mannitol fermentation, and positive acetoin, catalase, and coagulase test. The causes of contamination are contaminated abon ingredients, the manufacturing process using less sterile tools, poor handling and processing, processing food with dirty hands, food stored without cover, sick food processors, and dirty markets

scholarly journals EFFECT OF SILICATE ON GRAM STAINING AND VIABILITY OF PNEUMOCOCCI AND OTHER BACTERIA

1956 ◽  
Vol 103 (4) ◽  
pp. 453-463 ◽  
Author(s):  
Colin M. MacLeod ◽  
Amy S. Roe
Keyword(s):  
Serum Albumin ◽  
Nutrient Broth ◽  
Alkaline Solutions ◽  
Gram Negative Bacteria ◽  
Viridans Streptococci ◽  
Gram Positive ◽  
Gram Negative ◽  
Negative State ◽  
Gram Staining ◽  
Ammonium Compounds

Application of silicate solutions to living or heat-killed pneumococci and to certain "viridans" streptococci causes their conversion from a Gram-positive to a Gram-negative state. The original staining properties can be restored by suspending the silicate-treated bacteria in alkaline solutions of various salts but not by simple washing in water. Living pneumococci and the strains of streptococci whose staining properties are similarly affected are killed when suspended in silicate solutions. In other Gram-positive species silicate causes conversion to Gram negativity but restoration to positivity occurs upon washing in water. In a third group of Gram-positive organisms silicate has no effect on the Gram reaction. The viability of organisms in these two groups is unaffected by silicate under the conditions employed. No effect on staining or viability of Gram-negative bacteria has been observed. The effects of silicate on staining and viability are inhibited by nutrient broth or whole serum but not by purified serum albumin. Lecithin, choline, and other substituted ammonium compounds also inhibit the effects of silicate on pneumococci.

ESTIMATE THE PROPORTION OF MRSA AMONG STAPHYLOCOCCUS AUREUS ISOLATED FROM PATIENTS OF URINARY TRACT INFECTION ALONG WITH ITS ANTIBIOGRAM IN TERTIARY CARE HOSPITAL AT AGARTALA, TRIPUR

2021 ◽  
pp. 51-53
Author(s):  
Puja Ghosh ◽  
Lija Ghosh ◽  
Tapan Majumdar
Keyword(s):  
Staphylococcus Aureus ◽  
Culture Media ◽  
Tertiary Care ◽  
Northeast India ◽  
Urine Samples ◽  
Diffusion Method ◽  
Care Hospital ◽  
Gram Positive ◽  
Gram Staining ◽  
Uropathogenic Bacteria

Background: Generally, gram-negative bacteria are the most common uropathogenic bacteria causing UTI, as per recent ndings gram-positive bacteria also equally responsible for the UTI. As they have a plethora of pathogenic virulence factors that are highly responsible to give rise to severe UTI infection. Moreover, a betalactamase-producing gram-positive organism such as Staphylococcus aureus is often associated with high resistance to a wide class of antibiotics. There are few studies regarding the UTI infection-causing by the multi-drug resistant strain of Staph aureus called MRSA in Tripura Northeast India. This study aimed to determine the proportion of MRSA causing UTI in Tertiary care hospitals at Agartala Tripura. Materials and method – Mid-stream urine specimens were collected from patients suspected to be having UTI. Well, the mixed sample of urine was inoculated on specic culture media and all the isolates were identied as staphylococci by Gram staining, catalase test, coagulase test, and other biochemical reactions required for the identication of S.aureus and as per the CLSI guidelines we have studied the antibiogram of S.aureus and we have detected the MRSA by cefoxitin disc diffusion method. Result: in our present study 650 midstream urine samples were collected and processed. Out of the total 650 urine samples 91(14%) yielded growth on culture media and out of the 91 positive cases Staphylococcus aureus infected UTI cases were 12(13%) and among the 12 S.aureus positive isolates 6(50%) isolates were MSSA and other 6(50%) isolates were MRSA. Here in our study vancomycin(100%), doxycycline(83%), Nitrofurantoin(100%), Linezolid(83%) found to be very effective drugs for the treatment of MRSA, and most importantly here in this region of northeast only 6.5% of the total UTI patients affected by the MRSA which means the ratio of UTI infection by MRSA is low in this region. CONCLUSION: This study will be useful to update the policy of the empirical drugs in our hospital and at the same time, it will also help to control the unnecessary use of antibiotics to treat UTI patients

scholarly journals 87. Utilization of Methicillin-Sensitive/Resistant Staphylococcus aureus Nares Screen to Decrease Vancomycin and Linezolid Use in Hospitalized Patients with Respiratory Infections

2020 ◽  
Vol 7 (Supplement_1) ◽  
pp. S60-S60
Author(s):  
Noor F Zaidan ◽  
Rachel S Britt ◽  
David Reynoso ◽  
R Scott Ferren
Keyword(s):  
Staphylococcus Aureus ◽  
Respiratory Infections ◽  
Intervention Group ◽  
Kidney Injury ◽  
Post Intervention ◽  
Gram Positive ◽  
Stewardship Program ◽  
Screening Protocol ◽  
The Impact ◽  
Post Intervention Group

Abstract Background Pharmacist-driven protocols for utilization of methicillin-resistant Staphylococcus aureus (MRSA) nares screenings have shown to decrease duration of empiric gram-positive therapy and rates of acute kidney injury (AKI) in patients with respiratory infections. This study evaluated the impact of a pharmacist-driven MRSA nares screening protocol on duration of vancomycin or linezolid therapy (DT) in respiratory infections. Methods Patients aged 18 years and older with a medication order of vancomycin or linezolid for respiratory indication(s) were included. The MRSA nares screening protocol went into effect in October 2019. The protocol allowed pharmacists to order an MRSA nares polymerase chain reaction (PCR) for included patients, while the Antimicrobial Stewardship Program (ASP) made therapeutic recommendations for de-escalation of empiric gram-positive coverage based on negative MRSA nares screenings, if clinically appropriate. Data for the pre-intervention group was collected retrospectively for the months of October 2018 to March 2019. The post-intervention group data was collected prospectively for the months of October 2019 to March 2020. Results Ninety-seven patients were evaluated within both the pre-intervention group (n = 50) and post-intervention group (n = 57). Outcomes for DT (38.2 hours vs. 30.9 hours, P = 0.601) and AKI (20% vs. 14%, P = 0.4105) were not different before and after protocol implementation. A subgroup analysis revealed a significant reduction in DT within the pre- and post-MRSA PCR groups (38.2 hours vs. 24.8 hours, P = 0.0065) when pharmacist recommendations for de-escalation were accepted. Conclusion A pharmacist-driven MRSA nares screening protocol did not affect the duration of gram-positive therapy for respiratory indications. However, there was a reduction in DT when pharmacist-driven recommendations were accepted. Disclosures All Authors: No reported disclosures

scholarly journals Hospital Microbiologic Culture Results to Predict the Use of Anti–methicillin-Resistant Staphylococcus aureus (MRSA)

2020 ◽  
Vol 41 (S1) ◽  
pp. s40-s40
Author(s):  
Hsiu Wu ◽  
Tyler Kratzer ◽  
Liang Zhou ◽  
Minn Soe ◽  
Jonathan Edwards ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Risk Adjustment ◽  
Negative Binomial ◽  
Average Length ◽  
Negative Binomial Regression ◽  
Drug Resistant ◽  
Gram Positive ◽  
Average Length Of Stay ◽  
Control And Prevention ◽  
Hospital Characteristics

Background: To provide a standardized, risk-adjusted method for summarizing antimicrobial use (AU), the Centers for Disease Control and Prevention developed the standardized antimicrobial administration ratio, an observed-to-predicted use ratio in which predicted use is estimated from a statistical model accounting for patient locations and hospital characteristics. The infection burden, which could drive AU, was not available for assessment. To inform AU risk adjustment, we evaluated the relationship between the burden of drug-resistant gram-positive infections and the use of anti-MRSA agents. Methods: We analyzed data from acute-care hospitals that reported ≥10 months of hospital-wide AU and microbiologic data to the National Healthcare Safety Network (NHSN) from January 2018 through June 2019. Hospital infection burden was estimated using the prevalence of deduplicated positive cultures per 1,000 admissions. Eligible cultures included blood and lower respiratory specimens that yielded oxacillin/cefoxitin–resistant Staphylococcus aureus (SA) and ampicillin-nonsusceptible enterococci, and cerebrospinal fluid that yielded SA. The anti-MRSA use rate is the total antimicrobial days of ceftaroline, dalbavancin, daptomycin, linezolid, oritavancin, quinupristin/dalfopristin, tedizolid, telavancin, and intravenous vancomycin per 1,000 days patients were present. AU rates were modeled using negative binomial regression assessing its association with infection burden and hospital characteristics. Results: Among 182 hospitals, the median (interquartile range, IQR) of anti-MRSA use rate was 86.3 (59.9–105.0), and the median (IQR) prevalence of drug-resistant gram-positive infections was 3.4 (2.1–4.8). Higher prevalence of drug-resistant gram-positive infections was associated with higher use of anti-MRSA agents after adjusting for facility type and percentage of beds in intensive care units (Table 1). Number of hospital beds, average length of stay, and medical school affiliation were nonsignificant. Conclusions: Prevalence of drug-resistant gram-positive infections was independently associated with the use of anti-MRSA agents. Infection burden should be used for risk adjustment in predicting the use of anti-MRSA agents. To make this possible, we recommend that hospitals reporting to NHSN’s AU Option also report microbiologic culture results.Funding: NoneDisclosures: None

scholarly journals 1554. Epidemiology of Adult Bacterial Hand Infections at Two Urban Hospitals

2020 ◽  
Vol 7 (Supplement_1) ◽  
pp. S777-S778
Author(s):  
Arsheena Yassin ◽  
Christine Stavropoulos ◽  
Krystina L Woods ◽  
Jiashan Xu ◽  
Justin Carale ◽  
...  
Keyword(s):  
New York ◽  
Staphylococcus Aureus ◽  
Antibiotic Regimen ◽  
Gram Positive ◽  
Gram Negative ◽  
Streptococcus Species ◽  
Urban Hospitals ◽  
Haemophilus Parainfluenzae ◽  
Empiric Antibiotic ◽  
Gram Negative Organisms

Abstract Background Hand infections represent a major source of morbidity, which can result in hand stiffness and amputation. Early appropriate empiric antibiotic regimen may reduce the associated morbidity, hence the importance to examine local epidemiology. The aim of this study was to define the current epidemiology of adult hand infections at two urban hospitals in New York City. Methods We performed a double center, retrospective study of adult patients hospitalized from March 2018 to May 2020. Patients with positive cultures associated with the hand infections were included. Retrospectively, 100 patients were reviewed. Data on baseline demographic, clinical, surgical, microbiology, and treatment parameters were collected. Results Of the 100 patients, 76% were male, with median age of 47.5 years (35, 58.25) and average C-reactive protein (CRP) of 50.66 mg/L (± 64.64) on admission (see Table 1). Previous hospitalization within 1 year (38%), previous surgical procedures (39%) and recent IV medication use (26%) were common. 130 bacterial isolates were identified (see Table 2). The most frequent organisms were Gram-positive, with Methicillin susceptible Staphylococcus aureus (MSSA, 25.38%), Streptococcus species (20.08%), and Methicillin resistant Staphylococcus aureus (MRSA, 15.38%) being the most common. Gram-negative organisms were infrequent, with Haemophilus parainfluenzae (3.85%), Enterobacter cloacae (3.85) and Pseudomonas aeruginosa (3.08%) being the most prevalent. Of the 100 patients, 27% had polymicrobial infections, associated with trauma (6%), illicit IV use (6%) and unknown (7%) etiologies. Table 1: Baseline demographics and co-morbid conditions Table 2: Types and numbers of organisms in relation to etiologies Conclusion Within our population, the most common organisms associated with hand infections were Gram-positive, with Staphylococcus aureus and Streptococcus species being the most prevalent. Gram-negative pathogens were infrequently isolated. The results within this study can provide guidance to clinicians on assessing the appropriate empiric antibiotic regimen in patients with hand infections, and can serve as a basis for further studies identifying risk factors associated with isolation of organisms associated with hand infections. Disclosures All Authors: No reported disclosures

scholarly journals In Vitro activity of a Novel Benzoquinolizine Antibiotic, Levonadifloxacin (WCK 771) against Blood Stream Gram-Positive Isolates from a Tertiary Care Hospital

2020 ◽  
Vol 12 (03) ◽  
pp. 230-232
Author(s):  
Dhruv Mamtora ◽  
Sanjith Saseedharan ◽  
Ritika Rampal ◽  
Prashant Joshi ◽  
Pallavi Bhalekar ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Tertiary Care Hospital ◽  
Tertiary Care ◽  
Blood Stream ◽  
Tolerability Profile ◽  
Care Hospital ◽  
Coagulase Negative Staphylococci ◽  
Gram Positive ◽  
Methicillin Resistant

Abstract Background Blood stream infections (BSIs) due to Gram-positive pathogens such as methicillin-resistant Staphylococcus aureus (MRSA) are associated with high mortality ranging from 10 to 60%. The current anti-MRSA agents have limitations with regards to safety and tolerability profile which limits their prolonged usage. Levonadifloxacin and its oral prodrug alalevonadifloxacin, a novel benzoquinolizine antibiotic, have recently been approved for acute bacterial skin and skin structure infections including diabetic foot infections and concurrent bacteremia in India. Methods The present study assessed the potency of levonadifloxacin, a novel benzoquinolizine antibiotic, against Gram-positive blood stream clinical isolates (n = 31) collected from January to June 2019 at a tertiary care hospital in Mumbai, India. The susceptibility of isolates to antibacterial agents was defined following the Clinical and Laboratory Standard Institute interpretive criteria (M100 E29). Results High prevalence of MRSA (62.5%), quinolone-resistant Staphylococcus aureus (QRSA) (87.5%), and methicillin-resistant coagulase-negative staphylococci (MR-CoNS) (82.35%) were observed among bacteremic isolates. Levonadifloxacin demonstrated potent activity against MRSA, QRSA, and MR-CoNS strains with significantly lower minimum inhibitory concentration MIC50/90 values of 0.5/1 mg/L as compared with levofloxacin (8/32 mg/L) and moxifloxacin (2/8 mg/L). Conclusion Potent bactericidal activity coupled with low MICs support usage of levonadifloxacin for the management of BSIs caused by multidrug resistant Gram-positive bacteria.

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