Publications by authors named "Iftihar Koksal"

Introduction: Changing population demographics places a premium on optimizing older adult health. Vaccine-preventable diseases represent a substantial clinical and economic burden in older adults (≥65 years).

Areas Covered: This narrative review summarizes the adult immunization landscape in three countries; Saudi Arabia, the United Arab Emirates and Türkiye, informed by literature searches; PubMed (23-27 September 2023) supplemented by citation tracking via Google Scholar).

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Data in the literature on the use of ceftazidime-avibactam (CAZ-AVI) in carbapenem-resistant Klebsiella pneumoniae bloodstream infections (CRKP-BSIs) are limited especially in OXA-48 (Oxacillinase-48) predominant regions. Our study aimed to evaluate the effect of CAZ-AVI use on outcomes in CRKP-BSIs in Turkey, where OXA-48 is endemic. A multicenter retrospective observational study was conducted between January 2017 and September 2021.

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Viral hepatitis are infections that can cause liver damage, become chronic, lead to cirrhosis, hepatocellular carcinoma and ultimately result in death due to their ability to spread in the community through blood and infected body fluids. The aim of this study was to determine the seroprevalence of hepatitis B (HBV), hepatitis C (HCV), and hepatitis D (HDV) transmitted through blood among individuals living in Trabzon province and to examine the factors potentially associated with seroprevalence. This cross-sectional study was conducted in Trabzon province, located in the northeast of Türkiye, including a total of 10 districts, including the central district.

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Background: Catheter-Associated Urinary Tract Infections (CAUTIs) frequently occur in the intensive care unit (ICU) and are correlated with a significant burden.

Methods: We implemented a strategy involving a 9-element bundle, education, surveillance of CAUTI rates and clinical outcomes, monitoring compliance with bundle components, feedback of CAUTI rates and performance feedback. This was executed in 299 ICUs across 32 low- and middle-income countries.

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Objectives: To identify urinary catheter (UC)-associated urinary tract infections (CAUTI) incidence and risk factors (RF) in nine Middle Eastern countries.

Methods: We conducted a prospective cohort study between 1 January 2014 and 2 December 2022 in 212 intensive care units (ICUs) of 67 hospitals in 38 cities in nine Middle Eastern countries (Bahrain, Egypt, Jordan, Kuwait, Lebanon, Morocco, Saudi Arabia, Turkey, and the UAE). To estimate CAUTI incidence, we used the number of UC days as denominator and the number of CAUTIs as numerator.

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Objective: To identify urinary catheter (UC)-associated urinary tract infection (CAUTI) incidence and risk factors.

Design: A prospective cohort study.

Setting: The study was conducted across 623 ICUs of 224 hospitals in 114 cities in 37 African, Asian, Eastern European, Latin American, and Middle Eastern countries.

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Crimean-Congo Hemorrhagic Fever Virus (CCHFV) causes a life-threatening disease with up to a 40% mortality rate. With no approved medical countermeasures, CCHFV is considered a public health priority agent. The non-neutralizing mouse monoclonal antibody (mAb) 13G8 targets CCHFV glycoprotein GP38 and protects mice from lethal CCHFV challenge when administered prophylactically or therapeutically.

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Background: People who inject drugs (PWID) should be treated in order to eliminate hepatitis C virus in the world. The aim of this study was to compare direct-acting antivirals treatment of hepatitis C virus for PWID and non-PWID in a real-life setting.

Methods: We performed a prospective, non-randomized, observational multicenter cohort study in 37 centers.

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Article Synopsis
  • Ventilator-associated pneumonia from Pseudomonas aeruginosa in hospitalized patients leads to high mortality, prompting the testing of the bispecific monoclonal antibody MEDI3902 (gremubamab) to prevent this condition in patients who are colonized with the bacteria.
  • The EVADE study (NCT02696902) was a double-blind, placebo-controlled trial that recruited mechanically ventilated adults colonized with Pseudomonas aeruginosa and randomized them to receive either MEDI3902 or a placebo, focusing on the incidence of pneumonia over 21 days post-treatment.
  • Results showed no significant difference in the incidence of pneumonia between the MEDI3902 and placebo groups, with 22.4
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Background: The number and proportion of elderly patients living with chronic hepatitis C are expected to increase in the coming years. We aimed to compare the real-world efficacy and safety of direct-acting antiviral treatment in elderly and younger Turkish adults infected with chronic hepatitis C.

Methods: In this multicenter prospective study, 2629 eligible chronic hepatitis C patients treated with direct-acting antivirals between April 2017 and December 2019 from 37 Turkish referral centers were divided into 2 age groups: elderly (≥65 years) and younger adults (<65 years) and their safety was compared between 2 groups in evaluable population.

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Objective: To evaluate the rate of pneumococcal pneumonia (PP) among patients with community-acquired pneumonia (CAP) in Turkey and to investigate and compare features of PP and non-PP CAP patients.

Material And Methods: This multicenter, non-interventional, prospective, observational study included adult CAP patients (age ≥ 18 years). Diagnosis of PP was based on the presence of at least 1 positive laboratory test result for Streptococcus pneumoniae (blood culture or sputum culture or urinary antigen test [UAT]) in patients with radiographic findings of pneumonia.

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Introduction: Sunitinib is a tyrosine kinase inhibitor that binds to vascular endothelial factor receptor currently used for the treatment of renal cell carcinoma, as well as for several other conditions such as gastrointestinal stromal tumors and pancreatic neuroendocrine tumors. We present a patient with invasive diarrhea who was treated with sunitinib for metastatic renal cell carcinoma.

Case Report: Drug induced colitis was confirmed with colonoscopy from histopathological specimens.

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The aim of this study was to determine the in-vitro activity of fosfomycin against () and () isolates and the frequency of OXA-48, NDM, KPC, VIM, IMP types of carbapenemases in the carbapenem-resistant (CR) groups. A total of 346 isolates (126 and 220  from nosocomial bloodstream infections were included. Carbapenem and fosfomycin susceptibility were tested by Etest (bioMerieux, France) and agar dilution methods, respectively and evaluated in accordance with EUCAST criteria.

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Background: CoronaVac, an inactivated whole-virion SARS-CoV-2 vaccine, has been shown to be well tolerated with a good safety profile in individuals aged 18 years and older in phase 1/2 trials, and provided a good humoral response against SARS-CoV-2. We present the interim efficacy and safety results of a phase 3 clinical trial of CoronaVac in Turkey.

Methods: This was a double-blind, randomised, placebo-controlled phase 3 trial.

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Concentrations of fluoroquinolones, which are used in the treatment of many bacterial infections, should be monitored in biological fluids as they exhibit concentration-dependent bactericidal activity. In this study, a liquid chromatography method for the determination of levofloxacin, ciprofloxacin, moxifloxacin and gemifloxacin in human urine and plasma was developed for the first time. The efficiency of five different columns for the separation of these fluoroquinolones was compared.

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Background/aims: Hepatitis C virus (HCV) infection is a common disease that causes liver cirrhosis, hepatocellular carcinoma, and extra hepatic manifestations with high mortality and morbidity rates. This study aimed to present real-life experiences and results of treatment of HCV infection with direct-acting antiviral agents (DAAs) from the Euro-Asian region, including Turkey and Azerbaijan.

Materials And Methods: A total of 1224 patients with chronic HCV infection were treated with DAAs in accordance with the international guidelines for the management of HCV infection.

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Purpose: To develop a practical scoring system to assist clinicians in differentiating leptospirosis and hantavirus infections, whose epidemiological, clinical, and laboratory characteristics are literally like identical twins.

Methods: The study population consisted of 162 patients admitted to hospital with a confirmed diagnosis of leptospirosis (LG group, n = 92) and hantavirus infections (HG, group = 70) between January 2000 and January 2019. The two groups were compared in terms of demographic, clinical and laboratory features.

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Background: The β-lactamase inhibitor relebactam can restore imipenem activity against imipenem-nonsusceptible gram-negative pathogens. We evaluated imipenem/relebactam for treating imipenem-nonsusceptible infections.

Methods: Randomized, controlled, double-blind, phase 3 trial.

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The aims of the present study were to evaluate the efficacy and tolerability of ledipasvir/sofosbuvir (LDV/SOF) with or without ribavirin in the treatment of chronic hepatitis C (CHC) in patients with advanced liver disease and to analyse whether the use of LDV/SOF treatment is associated with a new occurrence of hepatocellular carcinoma (HCC) during and after LDV/SOF treatment. The Turkish Early Access Program provided LDV/SOF treatment to a total of 200 eligible CHC patients with advanced liver disease. The median follow-up period was 22 months.

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Background/aims: The hepatitis C virus (HCV) infection is important cause of chronic hepatitis. Liver biopsy is considered the gold standard for assessment of fibrosis but this procedure is an invasive procedure. We aimed to evaluate the diagnostic efficiency of non-invasive serum biomarkers, separately and in combinations, on liver fibrosis in treatment-naive chronic hepatitis C (CHC) patients.

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This consensus report includes expert opinions and recommendations regarding the screening, and if necessary, the follow-up, prophylaxis, and treatment of hepatitis B before the treatment in patients who will undergo immunosuppressive therapy due to an emergency risk of hepatitis B reactivation. To increase awareness regarding the risk of hepatitis B reactivation in immunosuppressive patients, academicians from several university health research and training centers across Turkey came together and discussed the importance of the subject, current status, and issues in accordance with the current literature data and presented solutions.

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Pneumococcal disease is responsible for significant morbidity and mortality. All over the world, 1.6 million people die of pneumococcal disease every year; this estimate includes the deaths of 1 million children aged less than 5 years and the deaths of 600.

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Background/aim: Healthcare-associated infections (HCAIs) are increasing due to the growing numbers of elderly people requiring long-term care and immunosuppressive therapies. The purpose of this study was to examine HCAIs occurring in elderly inpatients in our hospital.Materials and methods: This study prospectively investigated HCAIs developing in all patients hospitalized over a 1-year period.

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