Abstract:
BACKGROUND:Biofilm formation inside inserted medical devices leads to their failure and acts as a source of refractory infections. The ultraviolet C (UVC) light is a potential therapy that can be used against the biofilm of bacterial pathogens. OBJECTIVE:We evaluated the efficacy of sublethal dose of UVC light with anti-staphylococcal antibiotics against biofilms made from 30 isolates of methicillin-susceptible Staphylococcus aureus and methicillin-resistant S. aureus and S. epidermidis on vascular catheters. MATERIALS AND METHODS:A novel biofilm device was used to assess the combined approach. The biofilms on the catheters were irradiated with the UVC light at 254 nm and irradiance of 6.4 mW followed by treatment with vancomycin or quinupristin/dalfopristin at twice their minimum bactericidal concentrations or with linezolid at 64 µg/mL for 24 hours. The catheters were cut into segments and sonicated, and the number of the sessile cells was determined colorimetrically using XTT viable cells assay. The effect of UVC radiation followed by treatment with an antistaphylococcal antibiotic on the viability of the bacteria in the biofilm was visualized using LIVE/DEAD BacLight bacterial viability stain and confocal laser scanning microscopy. RESULTS:Exposure of the bacterial biofilms to the UVC light or each of the antibiotics alone was ineffective in killing the bacteria. Treatment of the biofilms with the antibiotics following their exposure to UVC light significantly (P<0.001) reduced the number of viable cells within the biofilms but did not completely eradicate them. CONCLUSION:To our knowledge, this combinatorial approach has not been investigated before. The combined approach can be used as a therapeutic modality for managing biofilm-associated infections by preventing the establishment of biofilms and/or disrupting the formed biofilms on the inserted medical devices with the goal of increasing their usefulness and preventing infectious complications. Further investigations are needed to assess the effectiveness of the combined approach in the clinical settings.
journal_name
Infect Drug Resistjournal_title
Infection and drug resistanceauthors
El-Azizi M,Khardori Ndoi
10.2147/IDR.S109343subject
Has Abstractpub_date
2016-08-19 00:00:00pages
181-9issn
1178-6973pii
idr-9-181journal_volume
9pub_type
杂志文章abstract:Background and objective:Acinetobacter baumannii (A. baumannii) is a common nosocomial pathogen, which developed multi-drug-resistance to different classes of antibiotics including carbapenems. This study examined ten common carbapenemase genes among 32 carbapenem-resistant A. baumannii clinical isolates recovered from...
journal_title:Infection and drug resistance
pub_type: 杂志文章
doi:10.2147/IDR.S206691
更新日期:2019-10-03 00:00:00
abstract::A systematic review was conducted to determine the distribution and prevalence of antibiotic-resistant bacteria (ARB), antimicrobial-resistant genes (ARGs), and antimicrobial-resistant gene determinants (ARGDs) in clinical, environmental, and farm settings and to identify key knowledge gaps in a bid to contain their s...
journal_title:Infection and drug resistance
pub_type: 杂志文章,评审
doi:10.2147/IDR.S170715
更新日期:2018-10-17 00:00:00
abstract::While methicillin-resistant Staphylococcus aureus (MRSA) bacteremia has poor outcomes, we describe our experience with Ceftobiprole mainly as a combination therapy for the treatment of MRSA bacteremia. All the cases of MRSA bacteremia in our center at the King Abdulaziz Medical City (KAMC), Riyadh, that had undergone ...
journal_title:Infection and drug resistance
pub_type:
doi:10.2147/IDR.S254395
更新日期:2020-08-03 00:00:00
abstract:Purpose:To characterize the genetic feature of the carbapenems resistant Acinetobacter johnsonii strain Acsw19 isolated from municipal sludge. This strain was found to carry two copies of blaNDM-1,cmlB1-like gene, and blaOXA-211-like gene along with other 8 antimicrobial resistance genes, 3 plasmids, 15 genomic islands...
journal_title:Infection and drug resistance
pub_type: 杂志文章
doi:10.2147/IDR.S236200
更新日期:2020-03-23 00:00:00
abstract:Background:Staphylococcus aureus is among the most common causes of health care- and community-associated infections worldwide. The distributions of different S. aureus clones change over time and also vary geographically. The purpose of this study was to determine the molecular type and antimicrobial resistance profil...
journal_title:Infection and drug resistance
pub_type: 杂志文章
doi:10.2147/IDR.S202906
更新日期:2019-06-20 00:00:00
abstract:Purpose:To investigate the occurrence and genetic characteristics of the blaIMP-26-positive plasmid from a multidrug-resistant clinical isolate, Enterobacter hormaechei L51. Methods:Species identification was determined by MALDI-TOF MS and Sanger sequencing. Antimicrobial susceptibility testing was performed by the ag...
journal_title:Infection and drug resistance
pub_type: 杂志文章
doi:10.2147/IDR.S232514
更新日期:2020-02-20 00:00:00
abstract::Echinocandin antifungal agents have become the first-line therapy for invasive candidiasis (IC) in many countries. Despite their increasing use, resistance to this class of drug is, overall, still uncommon. Here, we report two patients from the People's Republic of China with IC, one with infection caused by pan-echin...
journal_title:Infection and drug resistance
pub_type: 杂志文章
doi:10.2147/IDR.S152785
更新日期:2018-01-23 00:00:00
abstract::Background: The widespread use of antibiotics has resulted in a high incidence of antibiotic-associated diarrhea (AAD); moreover, the AAD-associated mortality rates have also increased. The effect of combined antibiotic administration on AAD in critically ill patients was analyzed to assist in antibiotic selection for...
journal_title:Infection and drug resistance
pub_type: 杂志文章
doi:10.2147/IDR.S194715
更新日期:2019-05-01 00:00:00
abstract:Introduction:Surgical site infections (SSIs) are one of the most frequently reported hospital acquired infections associated with significant spread of antibiotic resistance. Purpose:We aimed to evaluate a bundle-based approach in reducing SSI at acute surgical intensive care unit of the Emergency Hospital of Cairo Un...
journal_title:Infection and drug resistance
pub_type: 杂志文章
doi:10.2147/IDR.S236814
更新日期:2020-01-28 00:00:00
abstract:Introduction:Intravenous (IV) β-lactam antibiotics, excreted through bile into the gastrointestinal (GI) tract, may disrupt the gut microbiome by eliminating the colonization resistance from beneficial bacteria. This increases the risk for Clostridium difficile infection (CDI) and can promote antimicrobial resistance b...
journal_title:Infection and drug resistance
pub_type: 杂志文章
doi:10.2147/IDR.S260258
更新日期:2020-07-22 00:00:00
abstract:Background:The ability of biofilm formation is an effective way for Acinetobacter baumannii survival from stressed conditions. This present study was aimed to evaluate the association between biofilm formation, structure, the expression levels of genes related to biofilm formation and biofilm-specific resistance of A. ...
journal_title:Infection and drug resistance
pub_type: 杂志文章
doi:10.2147/IDR.S228981
更新日期:2019-12-12 00:00:00
abstract:Background:The risks of gastrointestinal disorders and cancer are higher in chronic kidney disease (CKD) patients than the general population. There are only a few published reports on the association of helicobacter pylori (H. pylori) infection, endoscopic findings, and histology in these patients. This study was desi...
journal_title:Infection and drug resistance
pub_type: 杂志文章
doi:10.2147/IDR.S228026
更新日期:2019-11-29 00:00:00
abstract:Background:The aim of this study was to evaluate the clinical performance of the BD Kiestra InoqulA automated specimen processing system with commonly encountered clinical microbiology specimens. Materials and Methods:Four types of clinical specimens (sputum, urine, normally sterile body fluids, and feces) were inocul...
journal_title:Infection and drug resistance
pub_type: 杂志文章
doi:10.2147/IDR.S245173
更新日期:2020-04-01 00:00:00
abstract:BACKGROUND:Candida spp. are a frequent cause of nosocomial bloodstream infections worldwide. OBJECTIVE:To evaluate the use patterns and outcomes associated with intravenous (IV) fluconazole therapy in intensive care units in Spain and Germany. PATIENTS AND METHODS:The research reported here was a prospective multicen...
journal_title:Infection and drug resistance
pub_type: 杂志文章
doi:10.2147/IDR.S38945
更新日期:2013-01-01 00:00:00
abstract::A lung abscess is an infectious pulmonary disease characterized by pus-filled cavity formation and often an air-fluid level. In this article, we described an indolent community-acquired lung abscess suspected as a tumor previously. A 56-year-old male presented with cough and expectoration for 2 months and hemoptysis f...
journal_title:Infection and drug resistance
pub_type: 杂志文章
doi:10.2147/IDR.S218921
更新日期:2019-08-08 00:00:00
abstract::The rapid detection of carbapenemase allows implementation of infection control measures and adaptation of antibiotic therapy. We evaluated the performances of the Xpert Carba-R V2® assay for the direct detection and identification of carbapenemase on positive blood cultures. We focused our evaluation on its detection...
journal_title:Infection and drug resistance
pub_type: 杂志文章
doi:10.2147/IDR.S204436
更新日期:2019-10-23 00:00:00
abstract:Purpose:Complicated urinary tract infections (cUTIs) are among the most frequent health-care-associated infections. In patients with cUTI, Pseudomonas aeruginosa deserves special attention, since it can affect patients with serious underlying conditions. Our aim was to gain insight into the risk factors and prognosis o...
journal_title:Infection and drug resistance
pub_type: 杂志文章
doi:10.2147/IDR.S185753
更新日期:2018-12-18 00:00:00
abstract:Background:Tachyplesin I is a cationic antimicrobial peptide with a typical cyclic antiparallel β-sheet structure. We previously demonstrated that long-term continuous exposure to increased concentration of tachyplesin I can induce resistant Gram-negative bacteria. However, no significant information is available about...
journal_title:Infection and drug resistance
pub_type: 杂志文章
doi:10.2147/IDR.S226687
更新日期:2020-01-16 00:00:00
abstract:Objective:An ultra performance liquid chromatography tandem mass spectrometry (UPLC-MS/MS) method for the determination of selinexor was established to investigate the effects of isavuconazole, itraconazole and fluconazole on the pharmacokinetics of selinexor in rats, respectively. Methods:Twenty-four healthy male rat...
journal_title:Infection and drug resistance
pub_type: 杂志文章
doi:10.2147/IDR.S269831
更新日期:2020-09-14 00:00:00
abstract:Introduction:Management of ventilator-associated pneumonia (VAP), the most common infection in patients on mechanical ventilation, should be tailored to local microbiological data. The aim of this study was to determine susceptibility patterns of organisms causing VAP to develop a treatment algorithm based on these fin...
journal_title:Infection and drug resistance
pub_type: 杂志文章
doi:10.2147/IDR.S145827
更新日期:2017-12-22 00:00:00
abstract::One of the main fundamental mechanisms of antibiotic resistance in Gram-negative bacteria comprises an effective change in the membrane permeability to antibiotics. The Gram-negative bacterial complex cell envelope comprises an outer membrane that delimits the periplasm from the exterior environment. The outer membran...
journal_title:Infection and drug resistance
pub_type: 杂志文章,评审
doi:10.2147/IDR.S144299
更新日期:2017-08-30 00:00:00
abstract:Purpose:The activity of the cationic antimicrobial peptide WLBU2 was evaluated against planktonic cells and biofilms of multi-drug resistant (MDR) Acinetobacter baumannii and Klebsiella pneumoniae, alone and in combination with classical antimicrobial agents. Methods:Control American Type Culture Collection (ATCC) str...
journal_title:Infection and drug resistance
pub_type: 杂志文章
doi:10.2147/IDR.S215084
更新日期:2019-07-09 00:00:00
abstract:Background:Acinetobacter baumannii has emerged as an important pathogen associated with hospital- and community-acquired infections. Community-acquired A. baumannii pneumonia is characterized by a fulminant course and high mortality rates. In this study, we report the identification of a community-acquired carbapenem-r...
journal_title:Infection and drug resistance
pub_type: 杂志文章
doi:10.2147/IDR.S202803
更新日期:2019-06-06 00:00:00
abstract::Ceftaroline is an advanced-generation cephalosporin antibiotic recently approved by the US Food and Drug Administration for the treatment of complicated skin and skin-structure infections (cSSSIs). This intravenous broad-spectrum antibiotic exerts potent bactericidal activity by inhibiting bacterial cell wall synthesi...
journal_title:Infection and drug resistance
pub_type: 杂志文章
doi:10.2147/IDR.S17432
更新日期:2012-01-01 00:00:00
abstract:Aim:Plasmodium falciparum malaria predominantly affects children residing in endemic areas. However, recently a significant number of Malawian adults, who otherwise should have attained some malaria-specific immunity, have been observed to succumb to either uncomplicated malaria (UM) or severe malaria (SM). In addition...
journal_title:Infection and drug resistance
pub_type: 杂志文章
doi:10.2147/IDR.S230112
更新日期:2020-01-07 00:00:00
abstract::Purpose:Mycoplasma pneumoniae is an important cause of community-acquired pneumonia (CAP). Information on the prevalence of M. pneumoniae in pediatric patients with CAP in Mexico is limited. The aim of this study was to detect M. pneumoniae in hospitalized pediatric patients with CAP. Patients and methods: We performe...
journal_title:Infection and drug resistance
pub_type: 杂志文章
doi:10.2147/IDR.S193076
更新日期:2019-04-18 00:00:00
abstract:Background:Tuberculosis is a communicable disease that is a major cause of ill health, one of the top 10 causes of death worldwide, and the leading cause of death from a single infectious agent, even ranking above human immuno-deficiency virus (HIV/AIDS). Objective:To assess the prevalence and associated risk factor...
journal_title:Infection and drug resistance
pub_type: 杂志文章
doi:10.2147/IDR.S248059
更新日期:2020-05-21 00:00:00
abstract:Purpose:To develop a rapid EDTA-modified carbapenem inactivation method (reCIM) combined with modified rapid carbapenem inactivation method (mrCIM) to detect carbapenemase and distinguish metallo-β-lactamases from carbapenemases in Enterobacteriaceae in 4 hrs. Materials and Methods:The sensitivities and specificities ...
journal_title:Infection and drug resistance
pub_type: 杂志文章
doi:10.2147/IDR.S249570
更新日期:2020-06-23 00:00:00
abstract:Introduction:Despite the moderate incidence of tuberculosis (TB) in many parts of Iran, Golestan province had a permanently higher TB incidence rate than the national average. Moreover, Golestan province receives immigrants, mainly from TB-endemic areas of Iran and neighbor countries. Here, we aimed to characterize the...
journal_title:Infection and drug resistance
pub_type: 杂志文章
doi:10.2147/IDR.S255889
更新日期:2020-07-01 00:00:00
abstract:Background and purpose:Invasive nontyphoidal salmonellosis, mostly caused by serovars Typhimurium and Enteritidis of Salmonella enterica, has emerged as a major public health problem in sub-Saharan Africa. The aim of this study was the clinical and microbiological characterization of nontyphoidal salmonellosis episodes...
journal_title:Infection and drug resistance
pub_type: 杂志文章
doi:10.2147/IDR.S147243
更新日期:2018-01-31 00:00:00