Investigation of the synergistic effect of ceftazidime-avibactam and aztreonam combination on carbapenem-resistant Klebsiella pneumoniae isolates with 3 different methods.

Treatment options are limited for infections caused by carbapenem-resistant Klebsiella pneumoniae (CRKP) isolates due to the production of metallo-β-lactamase (MBL). The ceftazidime-avibactam (CZA)/ aztreonam (ATM) combination represents a new therapeutic approach in MBL-positive isolates. Our study aims to determine distribution of carbapenemase genes in CRKP isolates and to investigate the in vitro synergistic effect of the CZA/ATM combination.

The Effect of Using Perioperative Platelet-Rich Plasma on Wound Healing Rate and Prevention of Salivary Fistula Formation in Patients Undergoing Partial Parotidectomy.

Objectives: This study aims to examine the effects of autologous platelet-rich plasma (PRP), which increases new connective tissue synthesis and revascularisation, on healing in parotid surgery wounds, prevention of salivary fistula formation, drain removal time and hospitalisation in the postoperative period.

Materials And Methods: Fifty-four patients who had an operation on partial parotidectomy were randomised, and then two groups were created. PRP was obtained by centrifuging the blood taken from the patients in the study group at the end of the surgery.

Comparison of intra-assay and inter-assay reproducibility and positive detection times of two different (BacT/Alert 3D and Autobio BC) commercial blood culture systems.

Purpose: In our study, we aimed to compare the performance of the BacT/Alert 3D (bioMerieux, France) system, which is currently used in our laboratory, and the Autobio BC (Autobio, China) system, which was newly introduced in our country, using standard and clinical isolates.

Methods: Bacterial suspension was prepared by two technicians on the same day and three consecutive days from five different standard strains with 0.5 McFarland turbidity, then serial dilution to a final concentration was adjusted and was simultaneously inoculated in aerobic blood culture bottles.

Risk factors for carbapenem-resistant infections in Intensive Care Units: a multicentre case-control study with a competing-risks analysis.

Aim: This study investigated the risk factors for the development of carbapenem-resistant Klebsiella pneumoniae (CRKP) infections in adult patients in Intensive Care Units (ICUs).

Methods: A multicentre case-control study was conducted in ICUs in three tertiary hospitals in Turkey. The cases were patients culture-confirmed CRKP and a condition associated with healthcare-associated infections.

Carbapenem-resistant Klebsiella pneumoniae outbreak with monoclonal spread: Evaluation of resistance genes and ceftazidime-avibactam susceptibility.

Purpose: The aim of this study was to investigate ceftazidime-avibactam (CAZ-AVI) susceptibility, carbapenemase genes, and clonal relationship in carbapenem-resistant Klebsiella pneumoniae (CrKp) isolates.

Methods: A total of 28 non-repetitive CrKp isolates with positive carbapenemase production determined by the modified carbapenem inactivation method (mCIM), were included in the study. Identification of the isolates was performed with MALDI-TOF MS (VITEK-MS, bioMerieux, France).

[A Case of Mycobacterium abscessus Identified by Suspicious Gram Staining in the Blood Culture of a Patient with Chronic Renal Failure].

Mycobacterium abscessus (M.abscessus), which is from the group of non-tuberculosis mycobacteria and is widely found in the natural environment, has been reported with increasing frequency as the causative agent of various infections; especially in the lower respiratory tract and in immuncompromised people. In this report, a case of M.

A new risk scoring system for early prediction of surgical need in patients with adhesive small bowel obstruction: a single-center retrospective clinical study.

Purpose: Cases of adhesive small bowel obstruction are a nuisance to surgeons. There have been years of ongoing discussions, and various guidelines have been published for the management of this disease. Both surgical and conservative approaches can have their own complications.

[Evaluation of In vitro Efficacy of Meropenem/Colistin and Meropenem/Fosfomycin Combinations on Multidrug Resistant Gram-Negative Bacilli].

The rate of extensively drug-resistant and pan-resistant gram-negative rods isolated as infectious agents is increasing around the world and in Türkiye. One of the important options in the treatment of these infections is the combined use of antibiotics. Therefore, the aim of this study was to investigate the in vitro effect of meropenem/colistin and meropenem/fosfomycin combinations on carbapenem-resistant gram-negative bacilli isolated as infectious agents.

The Effect of Total Laboratory Automation on Urine Culture Result Times in a Consolidated Laboratory.

Background: The Provincial Health Directorate of Istanbul province (Turkey) established a consolidated laboratory network consisting of four regional central laboratories to reduce general laboratory costs and increase laboratory efficiency and quality in all affiliated hospitals. As part of the consolidation project, the Total Laboratory Automation (TLA) system was installed in the microbiology department of the ISLAB-2 central laboratory. In this study, the turnaround time (TAT) of urine samples of a satellite laboratory where the system was not installed and the ISLAB-2 central laboratory were compared to evaluate the effect of consolidation and the TLA.

Investigation of in vitro efficacy of meropenem/polymyxin B and meropenem/fosfomycin combinations against carbapenem resistant Klebsiella pneumoniae strains.

The incidence of infections caused by carbapenem-resistant Klebsiella pneumoniae (CRKP) is increasing worldwide, and very limited number of effective antibiotics are available for therapy. In our study, the in vitro efficacy of meropenem/polymyxin B and meropenem/fosfomycin combinations against CRKP strains was investigated. The efficiency of meropenem/polymyxin B and meropenem/fosfomycin combinations was tested by checkerboard microdilution and checkerboard agar dilution methods, respectively, against 21 CRKP strains containing major carbapenem resistant genes (7 blaKPC, 7 blaOXA-48 gene, and 7 blaOXA-48+ blaNDM), and seven additional CRKP strains without carbapenemase genes.

The Prevalence of Positive Donor Corneoscleral Rim Culture and its Association with Ocular Infection After Transplantation.

Objectives: The aim of the study was to determine the prevalence of positive corneoscleral donor rim cultures and to report keratitis and endophthalmitis after keratoplasty.

Methods: Eye bank records and medical records of patients who underwent keratoplasty between September 1, 2015, and December 31, 2019, were retrospectively reviewed. Patients who had routine donor-rim culture taken during surgery and followed up for at least 1 year in the post-operative period were included in the study.

Evaluation of Broth Disk Elution Method to Determine Colistin Resistance in Klebsiella pneumoniae and Escherichia coli Strains.

Background: The reference broth microdilution (rBMD) method for the determination of colistin resistance is very laborious and time consuming, and many manual errors can occur. There are also limitations in detection of colistin heteroresistance. Therefore, alternative methods with satisfactory performance are required for routine laboratory work.

Comparison of syphilis seropositivity between non-immigrant and immigrant populations in the Anatolian side of Istanbul, Turkiye: Results of five-years retrospective study.

Objective: Our study aimed to evaluate the seropositivity for syphilis in non- immigrant and immigrant populations and compare the results regarding demographic data.

Methods: In accordance with the reverse algorithm, syphilis tests were performed between May 2014 and December 2018 in hospitals in our service zone for syphilis screening or symptomatic disease.

Results: A total of 135.

Comparison of performance of LIAISON SARS-CoV-2 antigen assay with RT-PCR during the Omicron wave.

Due to the newly emerging Omicron variant, there is a need to re-evaluate the performance of automated antigen tests. Our study aim was to evaluate the performance of the automated Liaison SARS-CoV-2 antigen assay against reverse transcriptase polymerase chain reaction (RT-PCR) in samples with Omicron variant.A prospective study was performed on 373 combined oro-nasopharyngeal samples (NPS) randomly collected from symptomatic patients.

Distribution of respiratory viruses: Evaluation of multiplex PCR results of 3074 patients.

Objective: Early and accurate diagnosis of acute respiratory infections is important because these diseases negatively affect public health and can lead to loss of workforce and an increase in health expenditures. In this study, we aimed to determine the respiration panel multiplex polymerase chain reaction (PCR) test results and seasonal distribution in our region.

Methods: Three thousand and seventy-four patients samples multiplex PCR (Anatolia, Bosphore Respiratory Pathogens Panel Kit v1) test results, which were sent to our laboratory, from 13 hospitals in our region between January 2018 and December 2018, were evaluated retrospectively.

Cardiac surgery with cardiopulmonary bypass markedly lowers SARS-COV-2 antibody titer.

Background: This study aims to investigate the effect of cardiopulmonary bypass on antibody titers in patients vaccinated against the severe acute respiratory syndrome-coronavirus 2 (SARS-CoV-2) undergoing cardiac surgery with cardiopulmonary bypass.

Methods: Between October 2021 and October 2022, a total of 70 patients (44 males, 26 females; mean age 59.9±10.

Performance of the Rapidec®Carba NP assay for the detection of different carbapenemases in Klebsiella pneumoniae and Escherichia coli strains.

Purpose: The spread of infections caused by Enterobacterales strains resistant to carbapenems is a global public health problem, and early detection of carbapenemases is very important to prevent their spread. The rapid detection of carbapenemase production with the new commercial assay Rapidec® Carba NP test is based on the biochemical detection of imipenem hydrolysis. Our study aims to evaluate the performance of the Rapidec® Carba NP test in OXA-48 positive isolates highly prevalent in our country and also in isolates with more than one carbapenemase gene that have an increased prevalence and to examine whether it can be used for confirmation of carbapenemase positivity in the routine laboratory.

[One-Year Candida Data of the Central Mycology Laboratory: Which Sample, Which Species, How Resistant?].

The incidence of fungal infections particularly Candida species, is increasing gradually as a result of the increased life expectancy associated with the advances in the diagnosis and treatment of diseases, and increased number of patients in the risk group over the years. In addition, the incidence of fungal infection types that are resistant to antifungal drugs has been increasing, and rare fungal species have been reported to be isolated more frequently. For this reason, it is indicated that identification to the species level will contribute to the early initiation of an accurate and effective treatment.

Phenotypic detection of carbapenemase production in carbapenem-resistant isolates with the rapid carbapenemase detection method (rCDM).

Introduction: Carbapenem antibiotics are widely used for the treatment of infections caused by multidrug-resistant bacteria. As a result of this, resistance to carbapenems is gradually increasing. Identification of carbapenemase production, one of the reasons for resistance, through molecular methods is expensive and time-consuming.

Microorganisms isolated from the bile of the patients who have undergone cholecystectomy and their antibiotic resistance pattern: multicenter prospective study.

Background: Gallbladder and biliary tract infections are diseases with high mortality rates if they are not treated properly. Microbiological evaluation of perioperatively collected samples both ensures proper treatment of patients and guides empirical treatment due to the determination of microorganism susceptibility.

Aims: This study aimed to isolate the microorganisms in bile cultures from patients who underwent cholecystectomy and to determine sensitivity results of these microorganisms.

Hepatitis E Infection in Solid Organ Transplant Recipients in Turkey.

Background: Hepatitis E virus is a re-emerging pathogen with an increase in human cases that can lead to chronic infection in immunosuppressed patients. Turkey is located between Asia and Europe, 2 regions with distinct epidemiological and clinical features of hepatitis E virus infection. This multicenter cross-sectional study aimed to investigate the prevalence of hepatitis E virus infection in liver and kidney transplant recipients in Turkey and to determine the role of possible transmission factors.

The investigation of biochemical and microbiological properties of four different honey types produced in turkey and the comparison of their effects with silver sulfadiazine on wound healing in a rat model of burn injury.

Background: To determine and compare the effects of different honey types on wound healing in an animal model, with silver sulfadiazine as the standard treatment.

Materials And Methods: Five different groups were created with eight rats in each group. Partial-depth burns were created, and different types of honey and silver sulfadiazine were applied to the respective groups.

Rapid detection of fosfomycin resistance in Escherichia coli and Klebsiella spp. strains isolated from urinary tract infections.

This study evaluates whether the rapid fosfomycin resistance (fosfomycin NP) method can be used for detecting fosfomycin resistance in routine laboratory work. Results from the disk diffusion and rapid fosfomycin NP methods were compared with the reference agar dilution method for Escherichia coli and Klebsiella spp. strains isolated from urinary tract infections.

Molecular characterization and antimicrobial susceptibility of methicillin-resistant isolates from clinical samples and asymptomatic nasal carriers in Istanbul (Turkey).

Background: Methicillin-resistant Staphylococcus aureus (MRSA) has been a widespread problem in Turkish hospitals.

Aims: The aim of this study was to investigate the staphylococcal toxin genes of the clinical and nasal MRSA isolates, and their antibiotic resistance profiles.

Materials And Methods: Isolation of nasal and clinical bacteria was done following standard microbiological methods.

Evaluation of the performance of rapid antibiotic susceptibility test results using the disk diffusion directly from the positive blood culture bottles.

Purpose: In this study, we aimed to evaluate the compliance of rapid antibiotic susceptibility test (RAST) and conventional laboratory procedures.

Methods: The RAST was performed directly from the blood cultures of 71 Gram negative bacilli (GNB) and 38 Gram positive cocci (GPC) isolates. The results were evaluated at fourth, sixth and eighth hour.