Occurrence of Multiple-Drug Resistance bacteria and their antimicrobial resistance patterns in burn infections from southwest of Iran

Author(s):  
Mohammad Hashemzadeh ◽  
Reza Heydari ◽  
Aram Asareh Zadegan Dezfuli ◽  
Morteza Saki ◽  
Hossein Meghdadi ◽  
...  

Abstract Background Burn infection continues to be a major issue of concern globally and causes more harm to developing countries. This study aimed to identify the aerobic bacteriological profiles and antimicrobial resistance patterns of burn infections in three hospitals in Abadan, southwest Iran. Methods The cultures of various clinical samples obtained from 325 burn patients were investigated from January to December 2019. All bacterial isolates were identified based on the standard microbiological procedures. Antibiotic susceptibility tests were performed according to the CLSI. Results A total of 287 bacterial species were isolated burn patients.P. aeruginosa was the most frequent bacterial isolate in Gram-negative bacteria and S. epidermidis was the most frequent species isolated in Gram-positive bacteria. The maximum resistance was found to ampicillin, gentamicin, ciprofloxacin, while in Gram-negative bacteria, the maximum resistance was found to imipenem, gentamicin, ciprofloxacin, ceftazidime, and amikacin. The occurrence of multidrug resistance phenotype was as follows: P. aeruginosa (30.3 %), Enterobacter spp (11.1 %), Escherichia coli (10.5 %), Citrobacter spp (2.1 %), S. epidermidis (2.8 %), S. aureus, and S. saprophyticus (0.7 %). Conclusion Owing to the diverse range of bacteria that because burn wound infection, regular investigation, and diagnosis of common bacteria and their resistance patterns is recommended to determine the proper antibiotic regimen for appropriate therapy.

2020 ◽  
Vol 114 (12) ◽  
pp. 962-973
Author(s):  
Dereje Nigussie ◽  
Eyasu Makonnen ◽  
Belete Adefris Legesse ◽  
Abebaw Fekadu ◽  
Gail Davey

Abstract Background Lymphoedema is caused by dysfunction of the lymphatic system resulting in accumulation of high-protein content fluid in the interstitial space. To date, the bacteria associated with wound infections of patients with lower limb lymphoedema in Ethiopia have not been studied. This study identified pathogenic bacteria involved in wound infection and assessed antimicrobial susceptibility patterns in patients with lymphoedema in Ethiopia. Methods Swab samples were collected from the wounds of patients with lymphoedema and cultured using standard microbiological techniques. Micro-organisms were identified by colony morphology followed by identification and antimicrobial susceptibility testing using the automated VITEK 2 COMPACT Microbial Detection System. Results Swabs were collected from 103 patients and 84 were culture positive: 44 (52.4%) culture-positive samples showed polymicrobial growth and 40 (47.6%) grew single bacterial isolates. In total, 134 isolates were obtained, of which 26 gram-negative and 12 gram-positive bacterial species were identified. A total of 28/63 (44.4%) gram-negative isolates and 3/57 (5.3%) gram-positive isolates were multiple drug resistant. There was no resistance to ciprofloxacin, moxifloxacin or gentamycin among gram-negative or gram-positive bacteria. Conclusion In this study, many infections were polymicrobial and showed multiple drug resistance. Fluoroquinolones and gentamycin, however, seemed to be effective against bacterial wound infection in this setting.


2018 ◽  
Author(s):  
Stephen Kasenda ◽  
Donnie Mategula ◽  
Geoffrey Elihu Manda ◽  
Tilinde Keith Chokotho

ABSTRACTIntroductionInfections are responsible for up to 85% of deaths in patients with burn injuries. Proper management of infections in patients with burns requires knowledge of local microbial landscape and antimicrobial resistance patterns. Most burns units in low to middle income countries lack this data to guide patient management.Methods and resultsWe conducted a retrospective audit of adult (≥17 years) patient records admitted between at 1st June 2007 and May 2017 at Queen Elizabeth Central Hospital Burns unit in Blantyre Malawi with an index complaint of burn injury. Descriptive statistical analysis was performed to determine antibiotic prescription patterns, microbial isolates and antimicrobial resistance patterns on the 500 patient files that met the inclusion criteria. Cephalosporin’s and Penicillin’s constituted 72.3% of the 328 antibiotic prescriptions given to 212 patients and 84% of all prescriptions were potentially inappropriate. A total of 102 bacterial isolates were identified and a majority (30.4%; n=31) were resistant to Aminoglycosides and Aminocyclitols (23.5%; n=24); seconded by Penicillin’s at 19.6% (n=20). Pseudomonas, staphylococcus and streptococcus species constituted 36.1%, 25% and 16.7% of all resistant bacteria that were isolated and they were thus the most common bacterial isolates. Drug resistance was more common among gram negative bacteria (48.8% versus 26.2%) and a greater proportion of patients (74.1%) that had antibiotic sensitivity testing were affected by drug resistant gram negative bacteria which appear on the World Health Organisation list of priority pathogens.ConclusionThe results of our preliminary study point towards nosocomial gram negative bacteria which appear on the World Health Organisations list of priority pathogens as the more common sources of antibiotic resistance. This scenario is potentially driven by inappropriate antibiotic prescriptions as well as clinical and laboratory diagnostic imprecision in addition to the universally recognised post burn pathophysiological changes of hypermetabolism and immunosuppression. Improvements in the areas of antimicrobial stewardship, diagnostic capacity and burns related research are needed in order to achieve optimal therapeutic outcomes and resource utilisation.


Animals ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 43
Author(s):  
Luminita Costinar ◽  
Viorel Herman ◽  
Elena Pitoiu ◽  
Ionica Iancu ◽  
Janos Degi ◽  
...  

Bacterial contamination of boar semen occurs with some frequency in artificial insemination centers and may have a negative effect on the quality of the semen as well as on the sows’ reproductive capacity. Normally, the source of bacterial contamination in pig seminal doses is the own boar. However, distilled water or laboratory equipment used to elaborate the seminal doses can be an important source of bacterial contamination. This study focused on the identification of gram-negative bacteria in boar semen, and impact on the quality of ejaculates obtained from boar, as well as on the establishment of antimicrobial resistance patterns of isolated gram-negative bacteria. Semen samples were collected from 96 boars, ranging in age from 12–36 month, from three artificial insemination centers from the North-West of Romania. Bacterial species were identified by two methods: matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) mass spectrometry and API 20 E (BioMerieux, France). The main bacteria isolated from the doses diluted semen were gram-negative bacteria (47.91%), with a majority of the contaminant bacteria belonging to the family Enterobacteriaceae: Seratia marcescens 19.56%, Proteus mirabilis 15.21% and Escherichia coli 10.86% and to the family Pseudomonaceae: Ralstonia picketii 17.39%, Burkholderia cepacia 10.86%, Pseudomonas aeruginosa 8.69%, and Pseudomonas fluorescens 4.34%, respectively. More than half of these isolates (56.52%) were resistant to gentamycin and 58.69% were resistant to penicillin. These antibiotics are very frequently added in sperm diluent in the centers for the processing of sperm from boars in Romania. Regular monitoring for bacterial contamination is an important aspect of a control program.


2021 ◽  
Author(s):  
Jignasha T. Thumar ◽  
Nisha Trivedi

The overuse of antibiotics has resulted in the development of drug resistant, a major problem in disease curing processes i.e. development of drug resistance. The World Health Organization (WHO) released its first list of the most concerning pathogens for human health in 2017 which suggested that there are total 12 bacterial families which have developed multiple drug resistance and for which novel antibiotics are required immediately (WHO 2017). There is a requirement to explore some novel compounds to overcome this issue. Thus our study aimed at exploration of marine actinomycetes as a valuable resource for novel products with antimicrobial properties. The halophilic actinomycete Nocardiopsis_sp. Al-H10-1 (KF384482) was isolated from saline water (20 m away from shore) of Alang coast (Gulf of Khambhat), Bhavnagar, Gujarat, India. The isolate Al-H10-1 was identified as Nocardiopsis sp. through rigorous morphological and cultural characteristics; the species was confirmed through 16s rRNA phylogenetic analysis. The antimicrobial potential of Nocardiopsis sp. Al-H10-1 was assessed against a range of Gram-positive and Gram-negative bacteria as well as three fungi, there it demonstrated antimicrobial activity against four Gram negative bacteria and one Gram positive bacteria. Further active antimicrobial compounds present in ethyl acetate extract was identified using Gas Chromatography-Mass Spectroscopy (GC-MS). GC-MS analysis showed the presence of 17 compounds which included antimicrobial compounds like 2, 4-bis (1, 1-dimethylethyl)-Phenol, Dibutyl phthalate as well as various types of alkanes and their derivatives.


2018 ◽  
Vol 10 (04) ◽  
pp. 432-436 ◽  
Author(s):  
Nidhi Bhardwaj ◽  
Surbhi Khurana ◽  
Minu Kumari ◽  
Rajesh Malhotra ◽  
Purva Mathur

ABSTRACT INTRODUCTION: Antimicrobial resistance is an increasing problem worldwide especially among the surgical site infections (SSIs). SSI is becoming more serious due to hospital-acquired infections/nosocomial infections, which further leads to the overuse of broad-spectrum antibiotics. To investigate the antimicrobial resistance patterns among Gram-negative bacteria in SSI in in- and out-patients the present study was designed. METHODOLOGY: During the 4 years (January 2013–December 2016), the antimicrobial resistant pattern was studied in the admitted patients and in the patients who were followed up to the outpatients department (OPD) after discharge. Antimicrobial resistance pattern testing was done by the disk diffusion method on Mueller-Hinton agar and by E-test for ten antibiotics according to The Clinical and Laboratory Standards Institute guidelines for Gram-negative bacilli. RESULTS: A total of 2,447 strains were isolated from the studied population on over the period of 4 years. Of 2447, 1996 (81%) were isolated from patients who had SSI during the hospital stay, and 451 (18%) were from patients who attended the OPD after discharge. In the outpatients, who followed up in the OPD for the SSI, Escherichia coli (148), and Pseudomonas aeruginosa (93), whereas in the patients who develop SSI during their hospital stay, Acinetobacter baumannii (622), E. coli (424), and Klebsiella pneumoniae (315) were found to be common. A very high resistance pattern was observed in both the studied groups; however, a higher resistance pattern was seen in in-patients as compared to outpatients. CONCLUSION: In our study, we have reported resistance pattern in Gram-negative bacteria isolated from the patients who were came for the follow as well as in the inpatients. For the outpatients, it can be concluded that it could be a community-acquired infection which is also an alarming condition for our society.


2021 ◽  
Author(s):  
Sudhakar P Awandkar ◽  
Mahesh B Kulkarni

Abstract Mastitis, most often udder infection of dairy animals attracted concerns due to heavy economic loss to dairy industry and public health. This study was conducted to determine the cultivable bacterial species associated with bovine clinical mastitis and their resistance patterns to different antimicrobials. The milk samples from 272 quarters of cows suffering from clinical mastitis were investigated. A total of 110 bacterial isolates belonging to 14 different genera were isolated and identified. Aminoglycosides and Quinolones were found to be most effective antibiotics. We demonstrated Extended Spectrum β Lactamases (ESBL), Cephalosporins, Tetracyclines, Vancomycin and Chloramphenicol resistant Gram-positive and Gram-negative bacteria along with Vancomycin Resistant Enterococci (VRE), Multiple Drug Resistant Gram-Negative Rods (MDR-GNR), MDR-Pseudomonas (MDR-P) and MDR Acinetobacter (MDR-A). The ESBLs and cephalosporins resistant S. aureus isolates showed resistance to Vancomycin. Wide spread of resistance among Streptococcus uberis against ESBLs and Cephalosporins, widely used antibiotics in bovine mastitis, was documented. Variable MDR patterns were recorded for every species. MDR transfer from non-pathogens to emerging foodborne and established mastitis pathogens could be potential problem to dairy industry as well as public health.


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