Enterobacter cloacae demonstrating reduced susceptibility to third generation cephalosporins and ertapenem on a Level 3 Neonatal Unit

2011 ◽  
Vol 63 (6) ◽  
pp. e12-e13
Author(s):  
Nimal Wickramasinghe ◽  
Michael Weinbren ◽  
Kathryn Blake
Keyword(s):  
Enterobacter Cloacae ◽  
Neonatal Unit ◽  
Third Generation ◽  
Level 3 ◽  
Third Generation Cephalosporins

scholarly journals Wide Distribution and Specific Resistance Pattern to Third-Generation Cephalosporins of Enterobacter cloacae Complex Members in Humans and in the Environment in Guadeloupe (French West Indies)

2021 ◽  
Vol 12 ◽  
Author(s):  
Matthieu Pot ◽  
Yann Reynaud ◽  
David Couvin ◽  
Célia Ducat ◽  
Séverine Ferdinand ◽  
...  
Keyword(s):  
West Indies ◽  
Enterobacter Cloacae ◽  
Farm Animals ◽  
Resistance Pattern ◽  
Third Generation ◽  
French West Indies ◽  
Produce Water ◽  
Human Samples ◽  
Resistant Strains ◽  
Third Generation Cephalosporins

Species belonging to Enterobacter cloacae complex have been isolated in numerous environments and samples of various origins. They are also involved in opportunistic infections in plants, animals, and humans. Previous prospection in Guadeloupe (French West Indies) indicated a high frequency of E. cloacae complex strains resistant to third-generation cephalosporins (3GCs) in a local lizard population (Anolis marmoratus), but knowledge of the distribution and resistance of these strains in humans and the environment is limited. The aim of this study was to compare the distribution and antibiotic susceptibility pattern of E. cloacae complex members from different sources in a “one health” approach and to find possible explanations for the high level of resistance in non-human samples. E. cloacae complex strains were collected between January 2017 and the end of 2018 from anoles, farm animals, local fresh produce, water, and clinical human samples. Isolates were characterized by the heat-shock protein 60 gene-fragment typing method, and whole-genome sequencing was conducted on the most frequent clusters (i.e., C-VI and C-VIII). The prevalence of resistance to 3GCs was relatively high (56/346, 16.2%) in non-human samples. The associated resistance mechanism was related to an AmpC overproduction; however, in human samples, most of the resistant strains (40/62) produced an extended-spectrum beta-lactamase. No relation was found between resistance in isolates from wild anoles (35/168) and human activities. Specific core-genome phylogenetic analysis highlighted an important diversity in this bacterial population and no wide circulation among the different compartments. In our setting, the mutations responsible for resistance to 3GCs, especially in ampD, were diverse and not compartment specific. In conclusion, high levels of resistance in non-human E. cloacae complex isolates are probably due to environmental factors that favor the selection of these resistant strains, and this will be explored further.

scholarly journals The role of prophylactic antibiotics in hepatitis B virus-related acute-on-chronic liver failure patients at risk of bacterial infection: a retrospective study

2021 ◽  
Vol 10 (1) ◽  
Author(s):  
Xiao-Qin Liu ◽  
Xue-Yun Zhang ◽  
Yue Ying ◽  
Jian-Ming Zheng ◽  
Jian Sun ◽  
...  
Keyword(s):  
Hepatitis B Virus ◽  
Hepatitis B ◽  
Clinical Course ◽  
Prophylactic Antibiotics ◽  
Third Generation ◽  
Chronic Liver Failure ◽  
Free Survival ◽  
B Virus ◽  
Third Generation Cephalosporins

Abstract Background Acute-on-chronic liver failure (ACLF) is characterized by an excessive systemic inflammatory response and organ failure and has high mortality. Bacterial infections (BIs) worsen the clinical course of ACLF and carry a poor prognosis in ACLF patients. The efficacy of third-generation cephalosporins has been challenged in recent years. The aim of this study was to characterize the difference between ACLF patients with and without BIs and to provide a reference for medical intervention. Methods A total of 140 patients with hepatitis B virus-related ACLF (HBV-ACLF) hospitalized at the Department of Infectious Diseases, Huashan Hospital, Fudan University (Shanghai, China) between May 2013 and January 2020 were enrolled. Mann-Whitney U test was used to compare the baseline characteristics of HBV-ACLF patients with and without BIs. Univariate and multivariate analyses were performed to find predictors of BIs. The characteristics of BIs and the role of prophylactic antibiotics were profiled. Results A total of 97 episodes of BIs occurred in patients during the course of HBV-ACLF. Patients with and without BIs differed in clinical characteristics. The incidence of BIs showed a positive correlation with the ACLF grade (P = 0.003) and the clinical course (P = 0.003). The 90-day transplant-free survival of patients with BIs was lower than those without BIs (P < 0.0001). Patients administered prophylactic antibiotics showed a lower incidence of BIs and had a higher transplant-free survival probability than those who did not (P = 0.046). No statistical differences in antibiotic efficacy between third-generation and other antibiotics were observed (P = 0.108). Conclusions BIs affected the clinical course and prognosis of patients with HBV-ACLF. Prophylactic antibiotics were of potential clinical importance in the prevention of BIs and improving the clinical course and prognosis in HBV-ACLF patients. Third-generation cephalosporins were qualified for use in antibiotic prophylaxis.

scholarly journals Effect of educational intervention on the appropriate use of oral antimicrobials in oral and maxillofacial surgery: a retrospective secondary data analysis

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Junya Kusumoto ◽  
Atsushi Uda ◽  
Takeshi Kimura ◽  
Shungo Furudoi ◽  
Ryosuke Yoshii ◽  
...  
Keyword(s):  
Educational Intervention ◽  
Oral Surgery ◽  
Maxillofacial Surgery ◽  
Antibiotic Use ◽  
Oral And Maxillofacial Surgery ◽  
Third Generation ◽  
Oral Antibiotics ◽  
Appropriate Use ◽  
Before And After ◽  
Third Generation Cephalosporins

Abstract Background In Japan, oral third-generation cephalosporins with broad-spectrum activity are commonly prescribed in the practices of dentistry and oral surgery. However, there are few reports on the appropriate use of antibiotics in the field of oral surgery. This study aimed to evaluate the appropriateness of antibiotic use before and after an educational intervention in the Department of Oral and Maxillofacial Surgery, Kobe University Hospital. Methods The use of oral antibiotics was investigated among inpatients and outpatients before and after an educational intervention conducted by the antimicrobial stewardship team. Additionally, the frequency of surgical site infection after the surgical removal of an impacted third mandibular molar under general anesthesia and the prevalence of adverse effects of the prescribed antibiotics were comparatively evaluated between 2013 and 2018. Results After the educational intervention, a remarkable reduction was noted in the prescription of oral third-generation cephalosporins, but increased use of penicillins was noted among outpatients. There was reduced use of macrolides and quinolones in outpatients. Although a similar trend was seen for inpatients, the use of quinolones increased in this population. Despite the change in the pattern of antibiotic prescription, inpatients who underwent mandibular third molar extraction between 2013 and 2018 did not show a significant increase in the prevalence of surgical site infections (6.2% vs. 1.8%, p = .336) and adverse effects of drugs (2.1% vs. 0%, p = .466). Conclusions This study suggests that the judicious use of oral antibiotics is possible through conscious and habitual practice of appropriate antibiotic use. However, further investigation is required to develop measures for appropriate use of oral antibiotics.

Third-Generation and Investigational Cephalosporins: I. Structure-Activity Relationships and Pharmacokinetic Review

1983 ◽  
Vol 17 (7-8) ◽  
pp. 507-515 ◽  
Author(s):  
Pamela Garzone ◽  
James Lyon ◽  
Victor L. Yu
Keyword(s):  
Classification Scheme ◽  
Third Generation ◽  
Serum Concentrations ◽  
New Agents ◽  
The Third ◽  
Structure Activity ◽  
Pharmacokinetic Properties ◽  
Fluid Penetration ◽  
Third Generation Cephalosporins ◽  
Antibacterial Spectrum

The structure-relationships and pharmacokinetic properties of the new second- and third-generation cephalosporins are reviewed. The new second-generation cephalosporins include ceforanide, cefotiam, and cefuroxime. The third-generation cephalosporins include cefmenoxime, cefoperazone, cefotaxime, cefsulodin, ceftazidime, ceftizoxime, ceftriaxone, and moxalactam. These new cephalosporins are semisynthetic analogs with different chemical substitutions on a 7-aminocephalosporanic nucleus. As a result of these chemical modifications, improvements in the antibacterial spectrum as well as pharmacokinetic properties have occurred. In general, the new cephalosporins have longer half-lives, higher and prolonged serum concentrations, and increased cerebrospinal fluid penetration. Selected cephalosporins also have increased biliary tract concentrations. A classification scheme for these new agents, based on generation and susceptibility to Pseudomonas aeruginosa, is presented.

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