Yazar "Baltaci, Sevgi" seçeneğine göre listele
Listeleniyor 1 - 4 / 4
Sayfa Başına Sonuç
Sıralama seçenekleri
Öğe Klebsiella pneumoniae Infections in the Intensive Care Unit: Risk Factors Related to Carbapenem Resistance and Patient Mortality(Ankara Microbiology Soc, 2020) Buyuktuna, Seyit Ali; Hasbek, Mursit; Celik, Cem; Unlusavuran, Meltem; Avci, Onur; Baltaci, Sevgi; Topcu, Kubra FirtinaKlebsiella pneumoniae is the cause of complicated and difficult-to-treat nosocomial infections such as sepsis, urinary tract infection, catheter related infections, pneumonia and surgical site infections in intensive care units. The biggest problem in infections with K.pneumoniae is that treatment options are limited due to multiple antibiotic resistance and consequently the increased morbidity and mortality. The widespread and improper use of carbapenems can lead to epidemics that are difficult to control, especially in intensive care units because of the acquired resistance to this group of antibiotics. Outbreaks and sporadic cases caused by carbapenem resistant K.pneumoniae (CRKP) species have been reported all over the world in recent years with increased frequency. The aim of this study was to determine the risk factors related to carbepenem resistance and mortality caused by K.pneumoniae infections in a university hospital anesthesia intensive care unit. The study was conducted between January 1st, 2016, and December 31st, 2018. Retrospective data were obtained from the patient and laboratory-based surveillance records. Adult patients (>= 18 years) with K.pneumoniae growth in the blood, urine, abscess and tracheal aspirate samples collected 48 hours after admission to the intensive care unit were considered as the relevant infection locus-related agent and treated with antibacterial therapy. Clinical samples collected from patients were inoculated onto 5% sheep blood and eosin-methylene-blue (EMB) agar except the blood samples. Blood samples were cultured in blood culture bottles and incubated in an automated system. Gram staining was performed for the samples showing growth signal within five days and then inoculated onto 5% sheep blood and EMB agar media and were incubated for 18-24 hours at 35.5-37 degrees C. Identification of the isolates was performed using Bruker IVD MALDI Biotyper 2.3 (Bruker Daltonik GmbH, Bremen, Almanya) based on matrix-assisted laser desorption/ionization time-of-mass spectrometry (MALDI-TOF MS). K.pneumoniae isolates were identified by obtaining reliability scores of 2.0 and above in the study. Antibiotic susceptibility tests were performed with Phoenix 100 (BD, New Jersey, ABD) automated system. Interpretations were made according to the European Committee on Antimicrobial Susceptibility Testing (EUCAST) guidelines. Combination disk diffusion test and polymerase chain reaction based tests were used to show the presence of carbapenemase in CRKP isolates. A total of 88 patients with K.pneumoniae infection were included in the study. The mean age of the patients was 74 +/- 15 (range= 21-93) years and 60.2% were female. CRKP was detected in 32 patients (36.4%) and carbapenem-sensitive K.pneumoniae (CSKP) was detected in 56 patients. The presence of OXA-48 was found to be 68.8% in the carbapenem screening test performed by combination disc method in patients with CRKP. Multivariate logistic regression analysis showed that previous use of colistin [Odds ratio (OR)= 19.108; 95% confidence interval (CI). 2.027-180.133; p= 0.010] and aminoglycoside (OR= 12.189; 95% CI= 1.256-118.334; p= 0.031) was an independent risk factor in terms of CRCP among the patients with K.pneumoniae infection. The 28-day mortality rates were 71.9% in the CRKP group (23/32) and 37.5% in the CSKP group (21/56). Presence of CRKP in terms of 28-day mortality (OR= 5.146; 95% CI= 1.839-14.398; p= 0.002) was an independent risk factor. The data obtained in this study will guide for conducting effective and continuous surveillance studies and implementing rational antibiotic programs to prevent the increase in CRKP.Öğe RNA N6-Methyladenosine Pathway Writer Genes Expression Levels and Clinical Severity of Infection in Covid-19 Patients(Pleiades Publishing Inc, 2023) Arslan, Badel; Baltaci, Sevgi; Bayyurt, Burcu; Sahin, Nil Ozbilum; Akyurek, Murat Eser; Bakir, Mehmet; Arslan, SerdalEpigenetic modifications are known to be effective in the severity and mortality rate of SARS-CoV-2 infection. N6-methyladenosin (m6A) is a posttranscriptional modification that is carried out by m6A methyltransferases (METTL3, METTL14, and WTAP). This modification is effective in the formation of a natural immune response in the relationship between the viral genome and the host cell. In this study, the relationship between clinical severity and METTL3, METTL14, WTAP expression levels in Covid-19 patients was studied for the first time. Also, patients' D-dimer, ferritin, and C-reactive protein values were compared with these gene expression levels. Total RNA was extracted from blood samples of 100 volunteers and gene expressions were measured using a quantitative real-time polymerase chain reaction. It was determined that METTL3 (p < 0.001) and METTL14 (p = 0.005) genes were statistically significant between case and control. In addition, METTL14 (p = 0.007) and WTAP (p = 0.015) gene expressions were significantly increased in patients with severe disease. METTL14 was statistically significant between the male patients and the control (fold change = 63.87, p = 0.015). Overexpression of the METTL14 gene may have resulted in higher clinical severity in males. Our results demonstrate that host N6-methyladenosine (m6A) methyltransferases may be effective in the development of SARS-CoV-2 infection and prognosis of the disease.Öğe Spontaneous bacterial peritonitis due to Brucella in an HBV-positive cirrhotic patient(Elsevier, 2025) Kiymaz, Yasemin Cakir; Yesildag, Sumeyye Kara; Baltaci, Sevgi; Baysal, Aysenur Comez; Baysal, Cihad; Keskin, Ertugrul; Bozkurt, SunaSpontaneous bacterial peritonitis (SBP) is a severe complication of cirrhosis, occurring in approximately 15 % of cirrhotic patients. The most common causative pathogens of SBP are Escherichia coli and Klebsiella pneumoniae. Although brucellosis can cause various complications, it is a rare cause of peritonitis. Herein, we report a case of a 30-year-old male with chronic hepatitis B who presented with fever, night sweats, weight loss, abdominal pain, and distension. Brucella spp. was isolated from blood and peritoneal fluid cultures. The patient fully recovered following six weeks of treatment with oral doxycycline (100 mg twice daily) and rifampicin (600 mg/day). No relapses or complications were observed during follow-up.Öğe Two Cases of Brucellosis Spondylodiscitis Mimicking Plasmacytoma(Doc Design Informatics Co Ltd, 2021) Buyuktuna, Seyit Ali; Hasbek, Mursit; Baltaci, Sevgi; Kara, Sumeyye; Comez, Aysenur; Bakir, MehmetBrucellosis, which is a zoonotic disease. can mimic many other diseases due to its various clinical symptoms and its ability to involve any organ or system in the body. Spondylodiscitis associated with brucellosis can be confused with plasmacytoma radiologically, clinically, and pathologically. In this paper, two cases of spondylodiscitis associated with brucellosis mimicking plasmacytoma are presented.
