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Öğe Evaluation of the clinical characteristics, laboratory parameters, and antibiotic treatment in patients diagnosed with tularemia(Elsevier, 2025) Kiymaz, Yasemin cakir; Bolat, Serkan; Katirci, Bilge; Aldemir, Ozlem; Altinkaya, Isik; Ozcan, Merdan Mustafa; Hopoglu, Serhat MuratIntroduction: This retrospective, cross-sectional, multi-center study aimed to evaluate the impact of laboratory results and treatments on the treatment response in patients diagnosed with tularemia. Methods: The study included 190 adult patients diagnosed with tularemia between November 2023 and June 2024. Results: 67.9 % were female, mean age was 45.8 +/- 14.9 years. The most frequently detected symptoms were sore throat (74.2 %), fatigue (71.6 %), and neck swelling (56.3 %). The most common form of tularemia was oropharyngeal (82.6 %) and glandular (14.2 %). The most used monotherapy was ciprofloxacin (80.5 %, n = 136), and combination therapy was streptomycin-ciprofloxacin (81.0 %, n = 17). Treatment failure was observed in 29 patients (15.2 %). No difference was found between patients who responded and didn't respond to treatment regarding laboratory parameters. Lymph node drainage or excision was performed in 47 patients (23 %). Suppurative lymphadenitis, abscess, necrosis, and conglomerate lymphadenopathy were more common in the lymph node drainage group. Reactive lymph nodes were more common in the group without lymph node drainage. There was no difference between the two groups regarding laboratory parameters of patients with and without lymph node drainage. The duration of antibiotic treatment was longer in patients who underwent lymph node drainage than in those who didn't. Conclusion: Radiological evaluation of lymph nodes upon hospital admission, in addition to antibiotic therapy during treatment, may help predict which patients are more likely to require surgical drainage. Laboratory parameters may not provide significant benefits in predicting the need for lymph node drainage and long-term treatment did not affect the treatment response.Öğe Investigation of hsa-miR-1908 and hsa-miR-144 Expression Levels in Crimean-Congo Hemorrhagic Fever Patients(Ankara Microbiology Soc, 2024) Aldemir, Ozlem; Engin, Aynur; Bayyurt, Burcu; Arslan, SerdalCrimean-Congo hemorrhagic fever (CCHF) is a tick-borne zoonotic viral disease. MicroRNAs (miRNAs), which play an important role in the regulation of gene expression, are involved in many processes essential for cell life such as development, differentiation, survival, apoptosis and aging. If miRNAs fail to fulfill their functions, they cause susceptibility to many diseases, including viral infections or cause the disease to be experienced in different clinical situations, such as severe or mild. In this study, we aimed to determine the expression levels of hsa-miR-144 and hsa-miR-1908 in CCHF patients and to compare the results in different clinical courses of CCHF disease. In this study, expression levels of hsa-miR-144 and hsa-miR-1908 were detected by quantitative reverse transcription polymerase chain reaction (RT-qPCR) in blood samples obtained from 60 CCHF patients and 40 healthy individuals. We also investigated the differences in the expression levels of the microRNAs between patients with severe and non-severe disease or between patients who died and survived. Quantitative polymerase chain reaction data were uploaded to the Data Analysis Center (Qiagen, Germany) and analyzed using the Delta Delta Cq (Delta Delta Ct) method. p value was calculated according to Student's t test for genes in the study groups. The expression level of hsa-miR-144 decreased (fold change= 0.09) and the expression level of hsa-miR-1908 increased 1.44-fold in CCHF patients compared to the control group. The expression of hsa-miR-144 and hsa-miR-1908 increased 2 and 2.36-fold, respectively, in severe patients compared to non-severe patients. The expression levels of hsa-miR-144 and hsa-miR-1908 were 16.3- and 14.3-fold higher, respectively, in fatal cases compared to surviving patients and these results were statistically significant. In addition, the expression level of hsa-miR-144 was significantly decreased in patients with low leukocyte counts and the expression level of hsa-miR-1908 was significantly increased in patients with prolonged prothrombin time (PT). This is the first study in the literature investigating the expression level of hsa-miR-1908 in CCHF patients. In conclusion, the data of this study suggest that hsa-miR-144 and hsa-miR-1908 may be important biomarkers in predicting the prognosis and clinical course of CCHF disease.Öğe Isolation and Antibiotic Resistance Rates of Mycobacterium tuberculosis complex in Mycolor TK® System(Doc Design Informatics Co Ltd, 2024) Yildirim, Dilara; Aldemir, Ozlem; Yanik-Yalcin, Tugba; Parlak, MesutObjective: Tuberculosis (TB) is a public health problem. This study aimed to determine the growth rates and drug susceptibility levels of patients with Mycobacterium tuberculosis complex (MTC) growth in cultures obtained and to compare the results with the growth rates and drug susceptibility levels found in our country and other countries. It also aimed to evaluate the results of supplementing classical methods such as Lowenstein-Jensen (LJ) with liquid TK MEDIUM (R) and to determine the relationship between the growth rates obtained with both methods. Materials and Methods: The study included patients who were Erlich Ziehl Neelsen (EZN) positive or negative and whose samples showed MTC growth in culture and susceptibility to the main drugs used in the treatment of TB, including streptomycin (SM), isoniazid (INH), rifampicin (RIF) and ethambutol (EMB). Patient samples were inoculated simultaneously into liquid TK (R) MEDIUM based on color change and LJ solid medium. TB identification and antimicrobial susceptibility testing were performed using the TK ANTI TB and PNB KIT (R) for the Mycolor TK (R) automated mycobacterial culture system. Results: The study found resistance to dual drugs at 5.4%, INH+RIF at 1.35%, INH at 6.8%, RIF at 14.8%, EMB at 17.6%, and SM at 1.35%. Out of 69 samples cultured in LJ medium, three failed to grow in liquid TK (R) MEDIUM, and two of 71 samples cultured in liquid TK (R) MEDIUM gave negative results in solid LJ medium. Conclusion: We found that the drug resistance rates we obtained in our study were similar to the results of the Republic of T & uuml;rkiye Ministry of Health and other studies conducted in our country. In a joint study conducted with liquid and solid media, no difference was found in the detection of TB bacilli. Mycolor TK (R) automated system can enable rapid mycobacterial culture in laboratories with limited resources.Öğe Mortality rates and risk factors associated with mortality in patients with stenotrophomonas maltophilia primary Bacteraemia and Pneumonia(Elsevier Science Inc, 2025) Hasbek, Mursit; Aldemir, Ozlem; Kiymaz, Yasemin cakir; Baysal, Cihad; Yildirim, Dilara; Buyuktuna, Seyit AliThis study aims to evaluate the risk factors associated with the mortality of S. maltophilia infections. Patients aged 18 years and older with S. maltophilia infection. Patients were divided into two groups primary bacteraemia and pneumonia. Of 176 S. maltophilia infections, 85 (48.2 %) were classified as bacteremia and 91 (51.8 %) as pneumonia. The mortality rate was 56 %, with no significant difference observed between the groups. Invasive mechanical ventilation, history of carbapenem use, and high Charlson Comorbidity Index (CCI) were significantly higher in the pneumonia group. In univariate analysis, higher Acute Physiology and Chronic Health Evaluation (APACHE) II score, higher Sequential Organ Failure Assessment (SOFA) score, and use of total parenteral nutrition (TPN) were identified as independent risk factors for 28-day mortality. This study demonstrates a mortality rate of 56 % in S. maltophilia infections and provides concrete data on risk factors for mortality.Öğe The great tularemia outbreak in Sivas: Evaluation of 205 cases(Elsevier Science Inc, 2025) Kiymaz, Yasemin Cakir; Bolat, Serkan; Katirci, Bilge; Aldemir, Ozlem; Altinkaya, Isik; Ozcan, Merdan Mustafa; Hopoglu, Serhat MuratThis study aimed to report a tularemia outbreak in Sivas and describe the epidemiological and diagnostic characteristics of the patients. Patients aged 18 and over followed up with a diagnosis of tularemia in Sivas Cumhuriyet University Hospital, Sivas Numune State Hospital, and Sivas State Hospital Infectious Diseases Outpatient Clinics and wards between November 2023 and May 2024 were evaluated. 205 adult patients with tularemia were included. The most common symptoms were sore throat (73.2 %, n=150), swelling in the neck (70.2 %, n = 144), and fatigue (55.1 %, n = 113). The most common form was oropharyngeal (82.4 %, n = 169) and glandular (14.6 %, n = 30). Lymphadenopathy was detected in 182 (88.8 %) patients, the most is cervical lymphadenopathy (60 %, n = 123). Lymph node drainage/excision was performed on 50 patients (24.3 %). There have been no deaths in this outbreak. This study presents patient data from the tularemia outbreak in Sivas.
