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Ozger HS, Aysert Yildiz P, Tombul N, Yildiz M, Yildiz Y, Buyukkoruk M, Gulbahar O, Hizel K. Evaluation of the Relationship Between COVID-19 Clinical Features and Serum 25(OH) Vitamin D Levels. mjima 2021. [DOI: 10.4274/mjima.galenos.2021.2021.28] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Özger HS, Aysert Yıldız P, Gaygısız Ü, Uğraş Dikmen A, Demirbaş Gülmez Z, Yıldız M, Şenol E, Hizel K, Güzel Tunçcan Ö, Çağlar K, Bozdayı G, Köktürk N, Ulukavak Çiftçi T, Aygencel Bıkmaz ŞG, Türkoğlu M, Aydoğdu M, Karabıyık L, Tufan A, Erbaş G, Kılıç HK, Keleş A, Bildik F, Kılıçaslan İ, Karamercan MA, Aslaner MA, Demircan A, Kavutçu M, Gülbahar Ö, Arhan M, Bostancı H, Tutar H, Boyacı Dündar N, Oğuzülgen İK, Dizbay M. The factors predicting pneumonia in COVID-19 patients: preliminary results from a university hospital in Turkey. Turk J Med Sci 2020; 50:1810-1816. [PMID: 32599972 PMCID: PMC7775687 DOI: 10.3906/sag-2005-385] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Accepted: 06/27/2020] [Indexed: 01/08/2023] Open
Abstract
Background/aim Pneumonia is the most serious clinical presentation of COVID-19. This study aimed to determine the demographic, clinical, and laboratory findings that can properly predict COVID-19 pneumonia. Materials and methods This study was conducted in the Gazi University hospital. All hospitalized patients with confirmed and suspected SARS-CoV-2 infection between 16 March 2020 and 30 April 2020 were analyzed retrospectively. COVID-19 patients were separated into two groups, pneumonia and nonpneumonia, and then compared to determine predicting factors for COVID-19 pneumonia. Variables that had a P-value of less than 0.20 and were not correlated with each other were included in the logistic regression model. Results Of the 247 patients included in the study 58% were female, and the median age was 40. COVID-19 was confirmed in 70.9% of these patients. Among the confirmed COVID-19 cases, 21.4% had pneumonia. In the multivariate analysis male sex (P = 0.028), hypertension (P = 0.022), and shortness of breath on hospital admission (P = 0.025) were significant factors predicting COVID-19 pneumonia. Conclusion Shortness of breath, male sex, and hypertension were significant for predicting COVID-19 pneumonia on admission. Patients with these factors should be evaluated more carefully for diagnostic procedures, such as thorax CT.
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Affiliation(s)
- Hasan Selçuk Özger
- Department of Infectious Diseases and Clinical Microbiology, Faculty of Medicine, Gazi University, Ankara, Turkey
| | - Pınar Aysert Yıldız
- Department of Infectious Diseases and Clinical Microbiology, Faculty of Medicine, Gazi University, Ankara, Turkey
| | - Ümmügülsüm Gaygısız
- Department of Anesthesiology and Reanimation, Faculty of Medicine, Gazi University, Ankara, Turkey
| | - Asİye Uğraş Dikmen
- Department of Public Health, Faculty of Medicine, Gazi University, Ankara, Turkey
| | - Zehra Demirbaş Gülmez
- Department of Infectious Diseases and Clinical Microbiology, Faculty of Medicine, Gazi University, Ankara, Turkey
| | - Mehmet Yıldız
- Department of Infectious Diseases and Clinical Microbiology, Faculty of Medicine, Gazi University, Ankara, Turkey
| | - Esin Şenol
- Department of Infectious Diseases and Clinical Microbiology, Faculty of Medicine, Gazi University, Ankara, Turkey
| | - Kenan Hizel
- Department of Infectious Diseases and Clinical Microbiology, Faculty of Medicine, Gazi University, Ankara, Turkey
| | - Özlem Güzel Tunçcan
- Department of Infectious Diseases and Clinical Microbiology, Faculty of Medicine, Gazi University, Ankara, Turkey
| | - Kayhan Çağlar
- Department of Clinical Microbiology, Faculty of Medicine, Gazi University, Ankara, Turkey
| | - Gülendam Bozdayı
- Department of Clinical Microbiology, Faculty of Medicine, Gazi University, Ankara, Turkey
| | - Nurdan Köktürk
- Department of Chest Diseases, Faculty of Medicine, Gazi University, Ankara, Turkey
| | | | | | - Melda Türkoğlu
- Department of Internal Disease, Faculty of Medicine, Gazi University, Ankara, Turkey
| | - Müge Aydoğdu
- Department of Chest Diseases, Faculty of Medicine, Gazi University, Ankara, Turkey
| | - Lale Karabıyık
- Department of Anesthesiology and Reanimation, Faculty of Medicine, Gazi University, Ankara, Turkey
| | - Abdurrahman Tufan
- Department of Internal Diseases, Rheumatology, Faculty of Medicine, Gazi University, Ankara, Turkey
| | - Gonca Erbaş
- Department of Radiology, Faculty of Medicine, Gazi University, Ankara, Turkey
| | - Hüseyin Koray Kılıç
- Department of Radiology, Faculty of Medicine, Gazi University, Ankara, Turkey
| | - Ayfer Keleş
- Department of Emergency Medicine, Faculty of Medicine, Gazi University, Ankara, Turkey
| | - Fikret Bildik
- Department of Emergency Medicine, Faculty of Medicine, Gazi University, Ankara, Turkey
| | - İsa Kılıçaslan
- Department of Emergency Medicine, Faculty of Medicine, Gazi University, Ankara, Turkey
| | | | - Mehmet Ali Aslaner
- Department of Emergency Medicine, Faculty of Medicine, Gazi University, Ankara, Turkey
| | - Ahmet Demircan
- Department of Emergency Medicine, Faculty of Medicine, Gazi University, Ankara, Turkey
| | - Mustafa Kavutçu
- Department of Medical Biochemistry, Faculty of Medicine, Gazi University, Ankara, Turkey
| | - Özlem Gülbahar
- Department of Medical Biochemistry, Faculty of Medicine, Gazi University, Ankara, Turkey
| | - Mehmet Arhan
- Department of Internal Diseases, Gastroenterology, Faculty of Medicine, Gazi University, Ankara, Turkey
| | - Hasan Bostancı
- Department of General Surgery, Faculty of Medicine, Gazi University, Ankara, Turkey
| | - Hakan Tutar
- Department of Otolaryngology, Faculty of Medicine, Gazi University, Ankara, Turkey
| | | | | | - Murat Dizbay
- Department of Infectious Diseases and Clinical Microbiology, Faculty of Medicine, Gazi University, Ankara, Turkey
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Ozger HS, Dizbay M, Corbacioglu SK, Aysert P, Demirbas Z, Tunccan OG, Hizel K, Bozdayi G, Caglar K. The prognostic role of neopterin in COVID-19 patients. J Med Virol 2020; 93:1520-1525. [PMID: 32860465 DOI: 10.1002/jmv.26472] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2020] [Revised: 08/22/2020] [Accepted: 08/25/2020] [Indexed: 12/15/2022]
Abstract
In Coronavirus disease-2019 (COVID-19) cases, hyper inflammation is associated with the severity of the disease. High levels of circulating cytokines were reported in severe COVID-19 patients. Neopterin produced by macrophages on stimulation with interferon-gamma, which is an important cytokine in the antiviral immune response, hence it can be used to predict the severity of disease in COVID-19 cases. In this study, it was aimed to determine the prognostic value of the neopterin for the prediction of severe disease in patients with COVID-19. This single-center, prospective study was conducted in hospitalized COVID-19 patients and healthy volunteers. Severe and mild COVID-19 cases were compared in terms of clinical and laboratory findings as well as serum neopterin levels on hospital admission. To assess the prognostic utility of neopterin between the severe and mild COVID-19 groups, a receiver-operating characteristic (ROC) curve was generated, and the area under the curve (AUC) was calculated. The median serum neopterin level was four times higher in COVID-19 patients than the healthy controls (46 vs. 12 nmol/L; p < .001). The AUC value of serum neopterin was 0.914 (95% confidence interval, 0.85-0.97). The sensitivity and specificity of serum neopterin for the cut-off value of 90 nmol/L to identify severe COVID-19 cases were 100% and 76%, respectively. Serum neopterin levels on hospitalization were significantly higher in severe COVID-19 disease than mild COVID-19 patients. Neopterin levels can be used as an early prognostic biomarker for COVID-19 on admission.
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Affiliation(s)
- Hasan Selcuk Ozger
- Infectious Disease and Clinical Microbiology, Gazi University School of Medicine, Ankara, Turkey
| | - Murat Dizbay
- Infectious Disease and Clinical Microbiology, Gazi University School of Medicine, Ankara, Turkey
| | | | - Pinar Aysert
- Infectious Disease and Clinical Microbiology, Gazi University School of Medicine, Ankara, Turkey
| | - Zehra Demirbas
- Infectious Disease and Clinical Microbiology, Gazi University School of Medicine, Ankara, Turkey
| | - Ozlem Guzel Tunccan
- Infectious Disease and Clinical Microbiology, Gazi University School of Medicine, Ankara, Turkey.,Emergency Department, Keçiören Training and Research Hospital, Ankara, Turkey.,Clinical Microbiology, Gazi University School of Medicine, Ankara, Turkey
| | - Kenan Hizel
- Infectious Disease and Clinical Microbiology, Gazi University School of Medicine, Ankara, Turkey
| | - Gulendam Bozdayi
- Clinical Microbiology, Gazi University School of Medicine, Ankara, Turkey
| | - Kayhan Caglar
- Infectious Disease and Clinical Microbiology, Gazi University School of Medicine, Ankara, Turkey.,Emergency Department, Keçiören Training and Research Hospital, Ankara, Turkey.,Clinical Microbiology, Gazi University School of Medicine, Ankara, Turkey
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4
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Guz G, Colak B, Hizel K, Reis KA, Erten Y, Bali M, Sindel S. Procalcitonin and Conventional Markers of Inflammation in Peritoneal Dialysis Patients and Peritonitis. Perit Dial Int 2020. [DOI: 10.1177/089686080602600221] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Objectives To determine the significance of a newly described marker of inflammation procalcitonin (PCT), and to investigate its relationship to conventional markers of inflammation, such as C-reactive protein (CRP), fibrinogen, and erythrocyte sedimentation rate (ESR), in patients on peritoneal dialysis (PD) and with peritonitis. Design A prospective, observational clinical study. Setting The Nephrology Division of a University-affiliated teaching hospital. Patients and Methods 51 consecutive patients on PD were included in the study. Of this number, 16 developed peritonitis during the observational period. Baseline PCT, CRP, and fibrinogen concentrations and ESR of 51 PD patients were determined at a time point (TB) prior to any evidence of infection. These results were compared with laboratory values from 74 hemodialysis patients and 34 nonuremic control subjects. All PD patients then were followed prospectively for evidence of peritonitis. In addition to routine blood tests, including hemoglobin and leukocyte count, and routine biochemical tests, blood samples were taken to measure PCT, CRP, and fibrinogen concentrations and ESR at the time (T0) when patients first were diagnosed with PD peritonitis and also on the 4th (T4) and the 14th (T14) days after treatment for peritonitis was initiated. PCT was assayed by immunoluminometry. Results No significant difference was observed between baseline median serum PCT concentrations in PD and hemodialysis patients; however, in both groups, baseline median PCT concentrations were significantly higher than those of nonuremic controls ( p < 0.05). The 16 patients on PD who developed peritonitis had 21 PD peritonitis episodes during the study period. The increased PCT concentration observed at T0 in PD peritonitis episodes decreased with therapy, and this change was statistically significant ( p < 0.05). In a receiver operating characteristic curve analysis for peritonitis, the area under the curve (AUC) for PCT was 0.80, which was significantly lower than the AUC for CRP and greater than the AUCs for fibrinogen and ESR. The sensitivity of PCT for peritonitis was lower than the sensitivity of conventional markers of inflammation; however, the specificity of PCT was higher. Conclusions Median serum PCT concentration in PD patients was significantly higher than in nonuremic controls but not hemodialysis patients. Serum PCT concentrations may serve as a useful adjunct to traditional markers of inflammation in detecting and monitoring inflammation and peritonitis in PD patients.
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Affiliation(s)
- Galip Guz
- Department of Nephrology Gazi
University Faculty of Medicine Cankaya, Ankara, Turkey
| | - Bulent Colak
- Department of Nephrology Gazi
University Faculty of Medicine Cankaya, Ankara, Turkey
| | - Kenan Hizel
- Department of Infectious Disease,
Gazi University Faculty of Medicine Cankaya, Ankara, Turkey
| | - Kadriye A. Reis
- Department of Nephrology Gazi
University Faculty of Medicine Cankaya, Ankara, Turkey
| | - Yasemin Erten
- Department of Nephrology Gazi
University Faculty of Medicine Cankaya, Ankara, Turkey
| | - Musa Bali
- Department of Nephrology Gazi
University Faculty of Medicine Cankaya, Ankara, Turkey
| | - Sukru Sindel
- Department of Nephrology Gazi
University Faculty of Medicine Cankaya, Ankara, Turkey
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5
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Hasanreisoglu M, Mahajan S, Ozdal PC, Hizel K, Ucgul AY, Onol M, Nguyen QD. Tick- borne infection revealing human immunodeficiency virus (HIV) positivity in a young adult. Am J Ophthalmol Case Rep 2019; 16:100559. [PMID: 31650087 PMCID: PMC6804791 DOI: 10.1016/j.ajoc.2019.100559] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Revised: 06/24/2019] [Accepted: 09/24/2019] [Indexed: 11/25/2022] Open
Abstract
Purpose To describe a patient whose retinal findings suggestive of tick-borne disease but evaluations led to early diagnosis and treatment of human immunodeficiency virus (HIV) infection. Observation A young patient presented with bilateral uveitis, branch retinal artery occlusion and retinal findings suggestive of infective/inflammatory etiology. Laboratory evaluations revealed that the patient was positive for co-infection with Rickettsia conorii and Bartonella henselae. On further investigation, the patient tested positive for HIV infection. The patient was treated with doxycycline as well as highly active anti-retroviral therapy (HAART) to control both opportunistic infections as well as HIV infection. Conclusion and Importance Patients with HIV infection are at risk for multiple, simultaneous opportunistic co-infections, including those with tick-borne diseases.
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Affiliation(s)
- Murat Hasanreisoglu
- Department of Ophthalmology, School of Medicine, Gazi University, Ankara, Turkey.,Byers Eye Institute, Stanford University, Palo Alto, CA, United States
| | - Sarakshi Mahajan
- Byers Eye Institute, Stanford University, Palo Alto, CA, United States
| | - Pinar Cakar Ozdal
- Ulucanlar Eye Training and Research Hospital, University of Health Sciences, Ankara, Turkey
| | - Kenan Hizel
- Department of Infectious Disease, School of Medicine, Gazi University, Ankara, Turkey
| | - Ahmet Yucel Ucgul
- Department of Ophthalmology, School of Medicine, Gazi University, Ankara, Turkey
| | | | - Quan Dong Nguyen
- Byers Eye Institute, Stanford University, Palo Alto, CA, United States
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Tabak F, Yurdaydın C, Kaymakoğlu S, Akarsu M, Akıncı EG, Akkız H, Alkım C, Çekin AH, Çuvalcı NÖ, Demir K, Değertekin B, Dökmetaş İ, Ersöz G, Hizel K, Kandemir FÖ, Önlen Y, Sonsuz A, Şenateş E, Tosun S, Tözün N, Idilman R, Guidelines Study Group VH. Diagnosis, management and treatment of hepatitis B virus infection: Turkey 2017 Clinical Practice Guidelines. Turk J Gastroenterol 2018; 28:73-83. [PMID: 29303103 DOI: 10.5152/tjg.2017.19] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Fehmi Tabak
- Turkish Association for the Study of the Liver, Istanbul, Turkey; Viral Hepatitis Society, Ankara, Turkey
| | - Cihan Yurdaydın
- Turkish Association for the Study of the Liver, Istanbul, Turkey; Viral Hepatitis Society, Ankara, Turkey
| | - Sabahattin Kaymakoğlu
- Turkish Association for the Study of the Liver, Istanbul, Turkey; Viral Hepatitis Society, Ankara, Turkey
| | - Mesut Akarsu
- Turkish Association for the Study of the Liver, Istanbul, Turkey; Viral Hepatitis Society, Ankara, Turkey
| | - Esra G Akıncı
- Turkish Association for the Study of the Liver, Istanbul, Turkey; Viral Hepatitis Society, Ankara, Turkey
| | - Hikmet Akkız
- Turkish Association for the Study of the Liver, Istanbul, Turkey; Viral Hepatitis Society, Ankara, Turkey
| | - Canan Alkım
- Turkish Association for the Study of the Liver, Istanbul, Turkey; Viral Hepatitis Society, Ankara, Turkey
| | - Ayhan H Çekin
- Turkish Association for the Study of the Liver, Istanbul, Turkey; Viral Hepatitis Society, Ankara, Turkey
| | - Nefise Ö Çuvalcı
- Turkish Association for the Study of the Liver, Istanbul, Turkey; Viral Hepatitis Society, Ankara, Turkey
| | - Kadir Demir
- Turkish Association for the Study of the Liver, Istanbul, Turkey; Viral Hepatitis Society, Ankara, Turkey
| | - Bülent Değertekin
- Turkish Association for the Study of the Liver, Istanbul, Turkey; Viral Hepatitis Society, Ankara, Turkey
| | - İlyas Dökmetaş
- Turkish Association for the Study of the Liver, Istanbul, Turkey; Viral Hepatitis Society, Ankara, Turkey
| | - Galip Ersöz
- Turkish Association for the Study of the Liver, Istanbul, Turkey; Viral Hepatitis Society, Ankara, Turkey
| | - Kenan Hizel
- Turkish Association for the Study of the Liver, Istanbul, Turkey; Viral Hepatitis Society, Ankara, Turkey
| | - Fatma Ö Kandemir
- Turkish Association for the Study of the Liver, Istanbul, Turkey; Viral Hepatitis Society, Ankara, Turkey
| | - Yusuf Önlen
- Turkish Association for the Study of the Liver, Istanbul, Turkey; Viral Hepatitis Society, Ankara, Turkey
| | - Abdullah Sonsuz
- Turkish Association for the Study of the Liver, Istanbul, Turkey; Viral Hepatitis Society, Ankara, Turkey
| | - Ebubekir Şenateş
- Turkish Association for the Study of the Liver, Istanbul, Turkey; Viral Hepatitis Society, Ankara, Turkey
| | - Selma Tosun
- Turkish Association for the Study of the Liver, Istanbul, Turkey; Viral Hepatitis Society, Ankara, Turkey
| | - Nurdan Tözün
- Turkish Association for the Study of the Liver, Istanbul, Turkey; Viral Hepatitis Society, Ankara, Turkey
| | - Ramazan Idilman
- Turkish Association for the Study of the Liver, Istanbul, Turkey; Viral Hepatitis Society, Ankara, Turkey
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Yurdaydın C, Tabak F, Kaymakoğlu S, Akarsu M, Akıncı EG, Akkız H, Alkım C, Çekin AH, Çuvalcı NÖ, Demir K, Değertekin B, Dökmetaş İ, Ersöz G, Hizel K, Kandemir FÖ, Önlen Y, Sonsuz A, Şenateş E, Tosun S, Tözün N, Idilman R, Guidelines Study Group VH. Diagnosis, management and treatment of hepatitis delta virus infection: Turkey 2017 Clinical Practice Guidelines. Turk J Gastroenterol 2018; 28:84-89. [PMID: 29303104 DOI: 10.5152/tjg.2017.20] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Cihan Yurdaydın
- Turkish Association for the Study of the Liver, İstanbul, Turkey; Viral Hepatitis Society, Ankara, Turkey
| | - Fehmi Tabak
- Turkish Association for the Study of the Liver, İstanbul, Turkey; Viral Hepatitis Society, Ankara, Turkey
| | - Sabahattin Kaymakoğlu
- Turkish Association for the Study of the Liver, İstanbul, Turkey; Viral Hepatitis Society, Ankara, Turkey
| | - Mesut Akarsu
- Turkish Association for the Study of the Liver, İstanbul, Turkey; Viral Hepatitis Society, Ankara, Turkey
| | - Esra G Akıncı
- Turkish Association for the Study of the Liver, İstanbul, Turkey; Viral Hepatitis Society, Ankara, Turkey
| | - Hikmet Akkız
- Turkish Association for the Study of the Liver, İstanbul, Turkey; Viral Hepatitis Society, Ankara, Turkey
| | - Canan Alkım
- Turkish Association for the Study of the Liver, İstanbul, Turkey; Viral Hepatitis Society, Ankara, Turkey
| | - Ayhan H Çekin
- Turkish Association for the Study of the Liver, İstanbul, Turkey; Viral Hepatitis Society, Ankara, Turkey
| | - Nefise Ö Çuvalcı
- Turkish Association for the Study of the Liver, İstanbul, Turkey; Viral Hepatitis Society, Ankara, Turkey
| | - Kadir Demir
- Turkish Association for the Study of the Liver, İstanbul, Turkey; Viral Hepatitis Society, Ankara, Turkey
| | - Bülent Değertekin
- Turkish Association for the Study of the Liver, İstanbul, Turkey; Viral Hepatitis Society, Ankara, Turkey
| | - İlyas Dökmetaş
- Turkish Association for the Study of the Liver, İstanbul, Turkey; Viral Hepatitis Society, Ankara, Turkey
| | - Galip Ersöz
- Turkish Association for the Study of the Liver, İstanbul, Turkey; Viral Hepatitis Society, Ankara, Turkey
| | - Kenan Hizel
- Turkish Association for the Study of the Liver, İstanbul, Turkey; Viral Hepatitis Society, Ankara, Turkey
| | - Fatma Ö Kandemir
- Turkish Association for the Study of the Liver, İstanbul, Turkey; Viral Hepatitis Society, Ankara, Turkey
| | - Yusuf Önlen
- Turkish Association for the Study of the Liver, İstanbul, Turkey; Viral Hepatitis Society, Ankara, Turkey
| | - Abdullah Sonsuz
- Turkish Association for the Study of the Liver, İstanbul, Turkey; Viral Hepatitis Society, Ankara, Turkey
| | - Ebubekir Şenateş
- Turkish Association for the Study of the Liver, İstanbul, Turkey; Viral Hepatitis Society, Ankara, Turkey
| | - Selma Tosun
- Turkish Association for the Study of the Liver, İstanbul, Turkey; Viral Hepatitis Society, Ankara, Turkey
| | - Nurdan Tözün
- Turkish Association for the Study of the Liver, İstanbul, Turkey; Viral Hepatitis Society, Ankara, Turkey
| | - Ramazan Idilman
- Turkish Association for the Study of the Liver, İstanbul, Turkey; Viral Hepatitis Society, Ankara, Turkey
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Karasahin O, Civil F, Ozger S, Hizel K. Measles-mumps-rubeola (MMR), varicella, and hepatitis A (HAV) seroprevalances among healthcare workers and their compliance to vaccination. Int J Infect Dis 2014. [DOI: 10.1016/j.ijid.2014.03.945] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Tuncbilek S, Aydin K, Hizel K. Vitamin D and Tumor Necrosis Factor-Alpha Receptor Gene Polymorphisms in Various Hepatitis B Clinical Conditions in Turkey. Gastroenterology Res 2013; 6:185-190. [PMID: 27785252 PMCID: PMC5051094 DOI: 10.4021/gr544e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 09/17/2013] [Indexed: 11/25/2022] Open
Abstract
Background The aim is to define the role of single nucleotide polymorphism on the progress of hepatitis B virus (HBV) infection. We evaluated polymorphisms of TNF-α-308, Vitamin D receptor Apa I and Taq I gene in patients with HBV infection. Methods All subjects included were older than 18 years old. Sixty three patients had chronic HBV infection, 61 were HBsAg positive carriers and 59 were positive for anti-HBs and anti-HBc. Gene polymorphisms were evaluated by Amplification Refractory Mutation System PCR. For patients with chronic hepatitis, viral load, ALT levels, and histopathological evaluation of the liver were also compared. Results Gender distribution was not different among groups; however, anti-HBs positive patients were significantly older than the other patients. ALT levels and viral load were significantly higher in chronic hepatitis group than the asymptomatic carriers group. Vitamin D receptor Apa I gene and Taq I gene and TNF-α -308 gene variant alleles were not different in all three groups. Variant alleles of three genes were not different in subgroups of chronic hepatitis patients formed according to ALT levels, viral load, histological activity index, and fibrosis score. Conclusions Role of single nucleotide polymorphism in clinical status of various HBV infection states was not shown in this study. Considering the other studies performed with this aim, which strengthens the notion that ethnicity is an important factor, future studies with more patients from different ethnic groups may help to clear the role of polymorphisms in the clinical progress of HBV infection.
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Affiliation(s)
- Semra Tuncbilek
- Infectious Diseases and Clinical Microbiology Department, Ufuk University Medical School, Turkey
| | - Kemalettin Aydin
- Infectious Diseases and Clinical Microbiology Department, Karadeniz Technical University Medical School, Turkey
| | - Kenan Hizel
- Infectious Diseases and Clinical Microbiology Department, Gazi University Medical School, Turkey
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Yilmaz Karadag F, Hizel K, Gelisen O. Colonization of Group B Streptococci In Pregnant Women At Delivery. Turk J Obstet Gynecol 2013. [DOI: 10.5505/tjod.2013.80947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Dizbay M, Tunccan OG, Sezer BE, Hizel K. Nosocomial imipenem-resistant Acinetobacter baumannii infections: epidemiology and risk factors. ACTA ACUST UNITED AC 2011; 42:741-6. [PMID: 20500117 DOI: 10.3109/00365548.2010.489568] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
The incidence, clinical characteristics, risk factors, antimicrobial susceptibility, and outcomes of nosocomial imipenem-resistant A. baumannii (IRAB) infections during a 5-y period (2003-2007) were retrospectively analyzed. A total of 720 patients with 925 episodes of A. baumannii infection were included in the study. A. baumannii infections were seen mostly in intensive care units. The incidence was 6.2 per 1000 admissions. The most common infections were pneumonias and bloodstream infections. Imipenem resistance among Acinetobacter strains increased significantly each y of the study (from 43.3% to 72.9%). Mortality was related to the presence of imipenem resistance, stay in intensive care unit, female gender, old age, and pneumonia. Haemodialysis, malignancy, and mechanical ventilation were significant risk factors for IRAB infections. Imipenem resistance was higher in strains isolated from patients with pneumonia. IRAB strains showed higher resistance rates to other antibiotics than imipenem-susceptible strains. The most active antimicrobial agents against A. baumannii were cefoperazone-sulbactam and netilmicin. The incidence of A. baumannii infections and imipenem resistance increased during the study period. IRAB infections should be considered in patients on mechanical ventilation and haemodialysis and in patients with malignancies.
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Affiliation(s)
- Murat Dizbay
- Department of Clinical Microbiology and Infectious Diseases, Gazi University School of Medicine, Besevler, Ankara, Turkey.
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12
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Aydogdu M, Gursel G, Hizel K, Ozis TN. Comparison of the serial surveillance with quantitative and non-quantitative tracheal aspirate in predicting ventilator-associated pneumonia etiology in patients receiving antibiotic therapy. Minerva Anestesiol 2010; 76:600-608. [PMID: 20661200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
BACKGROUND The aim of this study was to investigate the value of serial quantitative (QC) and non-quantitative (NQC) endotracheal aspirate (ETA) surveillance cultures in predicting the causative pathogen of ventilator associated pneumonia (VAP) in patients receiving antibiotic therapy and the factors associated with their predictive value. This was a prospective observational cohort study carried out in the Intensive Care Unit of a tertiary hospital. METHODS The study enrolled 109 patients receiving mechanical ventilation for at least four days. Tracheal surveillance cultures were obtained routinely thrice weekly. Each sample was processed non-quantitatively and quantitatively (103 and 105 cfu/mL). The sensitivity, specificity and predictive values (true positives plus true negatives) of these cultures for the development of VAP were evaluated, and the causative pathogens were assessed. RESULTS Sixty-eight VAP episodes were detected during this period. The NQCs and QCs detected the responsible pathogens of VAP in 63% and 28% of the VAP patients, respectively. Surveillance with NQC and QC were negative in 78% and 85% of the patients without VAP, respectively. Compared with the QC-ETAs (47%), NQC-ETAs (65%) were more predictive in all of the 109 patients. The NQC-ETA and QC-ETA predicted the causative pathogens at 3.3+/-2.7 days and 2.5+/-1.7 days prior to the development of VAP episodes, respectively. Both NQC and QC surveillance cultures were less predictive in older patients, and QCs were less predictive in A. baumannii infections. CONCLUSION These results suggest that surveillance with NQ-ETA is better than the Q-ETA in predicting the development and causative pathogen of VAP in patients who have already been receiving antibiotic therapy.
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Affiliation(s)
- M Aydogdu
- Respiratory Medicine Department of PCCM, Gazi University School of Medicine, Ankara, Turkey.
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13
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Gogus F, Günendi Z, Karakus R, Erdogan Z, Hizel K, Atalay F. Comparison of tuberculin skin test and QuantiFERON-TB gold in tube test in patients with chronic inflammatory diseases living in a tuberculosis endemic population. Clin Exp Med 2009; 10:173-7. [DOI: 10.1007/s10238-009-0082-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2009] [Accepted: 11/16/2009] [Indexed: 10/20/2022]
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14
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Abstract
Lactococcus lactis is a gram-positive bacterium, commonly used in the dairy industry. Although Lactococcus lactis is known to be non-pathogenic for humans, it can cause infection in immunocompromised patients. We report a case of peritonitis due to L. lactis in a continuous ambulatory peritoneal dialysis patient, which is the second reported case in the literature.
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Affiliation(s)
- Galip Guz
- Department of Nephrology, Gazi University Faculty of Medicine, Ankara, Turkey
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15
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Abstract
The in vitro efficacy and synergistic activity of tigecycline in comparison with other antimicrobials used in brucellosis, were tested for 16 Brucella melitensis strains by the E-test method. Tigecycline had the lowest minimal inhibitory concentration levels, and rifampin the highest, in the study. Tigecycline also provided the better synergistic activity compared to doxycycline according to the fractional inhibitory concentration index. The results of this in vitro study suggest tigecycline as a therapeutic alternative for brucellosis. These observations need to be supported with clinical studies.
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Affiliation(s)
- Murat Dizbay
- Department of Clinical Microbiology and Infectious Diseases, Gazi University School of Medicine, Ankara, Turkey.
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16
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Karakus R, Aral AL, Kanat DO, Hizel K, Caglar K, Sindel S, Yetkin I, Aybay C. Determinants of Protection Against Diphtheria in Adult Hemodialysis Patients. Ren Fail 2009; 29:829-34. [DOI: 10.1080/08860220701573533] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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17
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Nadir Oziş T, Ozcan Kanat D, Oğuzülgen IK, Aydoğdu M, Hizel K, Gürsel G. [The clinical and microbiological comparison of the use of heated humidifiers and heat and moisture exchanger filters with Booster in mechanically ventilated patients]. Tuberk Toraks 2009; 57:259-267. [PMID: 19787464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023] Open
Abstract
Ventilator associated pneumonia (VAP) is the most frequent nosocomial infection in intensive care units that is associated with prolonged mechanical ventilation, hospitalization and increased health-care costs. Various humidifiers can be used for humidification during mechanical ventilation. Many studies were conducted to identify the effects of two different humidifiers, i.e. heated humidifiers and heat and moisture exchanger filters (HME), on VAP development; and HME filters were found to decrease the VAP frequency. In this study we aimed to compare the efficacy and safety of heated humidifiers and HME-Booster. Heated humidifier with conventional microbiologic filter (CMF-HH) or HME-Booster were used in randomization to 41 mechanically ventilated patients of our intensive care unit, and patients were divided into two groups as group 1 receiving CMF-HH (20 patients) and group 2 (21 patients) receiving HME-Booster. Daily secretion scores, endotracheal tube occlusion due to secretions, VAP development rate for the assessment of microbiological safety of humidifiers and differences in PETCO(2) and PaCO(2) values for the assessment of their effect on arterial blood gas were recorded prospectively. The measurement of PETCO(2) and PaCO(2) values were performed with the presence of humidifiers and after removing them in both groups. In both groups with the removal of CMF-HH and HME-Booster, a decrease in PETCO(2) value was identified, but the decrease in group 2 was statistically significant (p= 0.016). The decrease in PaCO(2) after removal of humidifiers was greater in group 2 than in group 1, but the difference was not significant (p> 0.05).The rate of VAP and endotracheal tube occlusion was not significantly different between the groups. The mean secretion score was lower in group 1 (p= 0.041). In conclusion, although both humidifiers have similar microbiological effects, heated humidifiers could be preferred particularly for the patients with an underlying chronic lung disease due to its positive effects on PETCO(2) values and secretion scores.
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Affiliation(s)
- Türkan Nadir Oziş
- Department of Chest Diseases, Faculty of Medicine, Gazi University, Ankara, Turkey
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Kilic S, Dizbay M, Hizel K, Arman D. In vitro synergistic activity of antibiotic combinations against Brucella melitensis using E-test methodology. Braz J Microbiol 2008; 39:233-7. [PMID: 24031207 PMCID: PMC3768412 DOI: 10.1590/s1517-83822008000200006] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2007] [Revised: 09/22/2007] [Accepted: 01/20/2008] [Indexed: 11/22/2022] Open
Abstract
The treatment of brucellosis is still problematic, because of high rates of treatment failure or relapses. As the microorganism is an intracellular pathogen, treatment requires combined regimens. However, limited existing data on in vitro combinations are avaliable for Brucellae. The aim of this study was to investigate the in vitro efficacy of various traditional and new antibiotic combinations against 16 Brucella melitensis strains. The combination effect of antimicrobial agents was evaluated by E-test synergy method to obtain a fractional inhibitory concentration (FIC) index. Co-Trimoxazole (SXT) and moxifloxocin (MXF) exhibited the lowest MIC, while Rifampin (RIF) had the highest MIC in the study. Combinations with RIF showed the best synergistic activity (100% of RIF-tetracycline (TET), and 87.5% of RIF-SXT). Synergistic activity was also detected at seven (43.7%) of ciprofloxocin (CIP)-SXT, four (25%) of TET-MXF, and two (12.5%) of TET-SXT combinations. The combinations that demonstrated additivity were TET-SXT, CIP-SXT and TET-MXF. Antagonism was observed only with the TET-Streptomycin (STR) combination in three strains (18.8%). Further work including randomized controlled clinical trials is required to fully evaluate the usefulness of these data.
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Affiliation(s)
- Selcuk Kilic
- Refik Saydam National Hygiene Center, Department of Communicable Diseases Research
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19
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Adişen E, Dizbay M, Hizel K, Ilter N. Leukocytoclastic vasculitis during pegylated interferon and ribavirin treatment of hepatitis C virus infection. Indian J Dermatol Venereol Leprol 2008; 74:60-2. [PMID: 18187830 DOI: 10.4103/0378-6323.38414] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Dizbay M, Hizel K, Kilic S, Mutluay R, Ozkan Y, Karakan T. Brucella peritonitis and leucocytoclastic vasculitis due to Brucella melitensis. Braz J Infect Dis 2008; 11:443-4. [PMID: 17874004 DOI: 10.1590/s1413-86702007000400017] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2007] [Indexed: 11/22/2022] Open
Abstract
Brucellosis is a multisystemic disease that rarely leads to a fatal outcome. While reticuloendothelial system organs are mostly affected, peritonitis and posthepatitic cirrhosis are also complications of brucellosis, though they are very rare. Brucella spp. can also trigger immunological reactions. We report a case of brucellosis with peritonitis, renal failure and leucocytoclastic vasculitis caused by Brucella melitensis, which led to a fatal outcome. Brucellosis should be considered in the differential diagnosis of vasculitic diseases, especially in endemic areas.
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Affiliation(s)
- Murat Dizbay
- Department of Clinical Microbiology and Infectious Diseases, School of Medicine, Gazi University, Ankara, Turkey.
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21
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Gursel G, Aydogdu M, Hizel K, Ozis T. Comparison of the surveillance with quantitative and nonquantitative ETA cultures in predicting ventilator-associated pneumonia etiology in patients receiving antibiotic therapy. Crit Care 2008. [PMCID: PMC4088424 DOI: 10.1186/cc6274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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22
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Nas T, Kalkanci A, Fidan I, Hizel K, Bolat S, Yolbakan S, Yilmaz E, Ozkan S, Kustimur S. Expression of ALS1, HWP1 and SAP4 genes in Candida albicans strains isolated from women with vaginitis. Folia Microbiol (Praha) 2008; 53:179-183. [PMID: 18837169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Total mRNA of Candida strains( isolated form whole vaginal swabs) was investigated and the in vivo expression of C. albicans secreted aspartyl proteinase (SAP4), aglutinin-like sequence (ALS1) and hyphal wall protein (HWP1) genes was determined. A spectrum of gene expression profiles of strain isolated from vulvovaginal candidiasis(VVC) cases consisting of 10 pregnant, 4 postmenopausal, and 15 reproductive age (12 primary and 3 recurrent) 9 women with different estrogen level. Expression of SAP4, ALS1 and HWP1 genes was evaluated by reverse-transcriptase polymerase chain reaction using specific primer sets. The expression of ALS1, HWP1, and SAP4 was detected as 69, 62, and 38 %, respectively, in all cases. In pregnant, postmenopausal, and reproductive age women with VVC, the expression of ALS1 was observed as 70, 75, 67%, and HWP 60, 25, 73% respectively . Expression of SAP4 was found in pregnant, postmenopausal, and reproductive age women as 40, 50, and 33% respectively. Expression of teh adhesion genes in VVC does not correlate with estrogen level of patients.
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Affiliation(s)
- T Nas
- Department of Gynecology and Obstetrics, Gazi University, Ankara, Turkey
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Hizel K, Guzel O, Dizbay M, Karakus R, Senol E, Arman D, Aktas F, Ulutan F. Age and duration of disease as factors affecting clinical findings and sacroiliitis in brucellosis. Infection 2007; 35:434-7. [PMID: 17906836 DOI: 10.1007/s15010-007-6361-z] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2006] [Accepted: 06/11/2007] [Indexed: 11/27/2022]
Abstract
OBJECTIVE Brucellosis may be seen in any age group, but it still involves young and middle aged adults more frequently. Our aim was to investigate the relationship between age and the duration of disease on clinical findings of brucellosis in adults in this study. PATIENTS AND METHOD One hundred and sixty-three patients with brucellosis, treated in our hospital, between 1997 and 2003, were evaluated retrospectively. RESULTS Fever was found in 60.7% of the patients, and it was significantly higher when the duration of disease was less than one month (p = 0.03). Fever was significantly lower in the > or = 65 age group (p = 0.01). Sacroiliitis was detected in 44.1% of patients. Sacroiliitis was significantly higher in the 15-35 age group (p = 0.03). There were no differences between age groups and other clinical and laboratory findings. CONCLUSIONS Sacroiliac involvement was noted particularly in young adults who manifested lumbar pain and fever, but this might not be a major symptom of brucellosis in the elderly, or in patients showing symptoms for more than a month.
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Affiliation(s)
- K Hizel
- Clinical Microbiology and Infectious Diseases, Gazi University School of Medicine, Besevler, 06510, Ankara, Turkey.
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24
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Kalkanci A, Berk E, Aykan B, Caglar K, Hizel K, Arman D, Kustimur S. Epidemiology and antifungal susceptibility of Candida species isolated from hospitalized patients. J Mycol Med 2007. [DOI: 10.1016/j.mycmed.2006.11.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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25
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Güz G, Yeğin ZA, Doğan I, Hizel K, Bali M, Sindel S. Portal vein thrombosis and liver abscess due to Lactococcus lactis. Turk J Gastroenterol 2006; 17:144-7. [PMID: 16830302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
A 26-year-old man was admitted with fever and abdominal pain. Abdominal ultrasonography and Doppler ultrasound eventually revealed portal vein thrombosis and a pyogenic liver abscess (17x11x11 cm). Lactococcus lactis was isolated from a culture of the abscess material. This organism is not a common pathogen in humans. This is the first published description of portal vein thrombosis and pyogenic liver abscess due to L. lactis.
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Affiliation(s)
- Galip Güz
- Department of Internal Medicine, Faculty of Medicine, Gazi University, Ankara, Turkey.
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26
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Guz G, Colak B, Hizel K, Reis KA, Erten Y, Bali M, Sindel S. Procalcitonin and conventional markers of inflammation in peritoneal dialysis patients and peritonitis. Perit Dial Int 2006; 26:240-8. [PMID: 16623432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/08/2023] Open
Abstract
OBJECTIVES To determine the significance of a newly described marker of inflammation procalcitonin (PCT), and to investigate its relationship to conventional markers of inflammation, such as C-reactive protein (CRP), fibrinogen, and erythrocyte sedimentation rate (ESR), in patients on peritoneal dialysis (PD) and with peritonitis. DESIGN A prospective, observational clinical study. SETTING The Nephrology Division of a University-affiliated teaching hospital. PATIENTS AND METHODS 51 consecutive patients on PD were included in the study. Of this number, 16 developed peritonitis during the observational period. Baseline PCT, CRP, and fibrinogen concentrations and ESR of 51 PD patients were determined at a time point (TB) prior to any evidence of infection. These results were compared with laboratory values from 74 hemodialysis patients and 34 nonuremic control subjects. All PD patients then were followed prospectively for evidence of peritonitis. In addition to routine blood tests, including hemoglobin and leukocyte count, and routine biochemical tests, blood samples were taken to measure PCT, CRP, and fibrinogen concentrations and ESR at the time (T0) when patients first were diagnosed with PD peritonitis and also on the 4th (T4) and the 14th (T14) days after treatment for peritonitis was initiated. PCT was assayed by immunoluminometry. RESULTS No significant difference was observed between baseline median serum PCT concentrations in PD and hemodialysis patients; however, in both groups, baseline median PCT concentrations were significantly higher than those of nonuremic controls (p < 0.05). The 16 patients on PD who developed peritonitis had 21 PD peritonitis episodes during the study period. The increased PCT concentration observed at T0 in PD peritonitis episodes decreased with therapy, and this change was statistically significant (p < 0.05). In a receiver operating characteristic curve analysis for peritonitis, the area under the curve (AUC) for PCT was 0.80, which was significantly lower than the AUC for CRP and greater than the AUCs for fibrinogen and ESR. The sensitivity of PCT for peritonitis was lower than the sensitivity of conventional markers of inflammation; however, the specificity of PCT was higher. CONCLUSIONS Median serum PCT concentration in PD patients was significantly higher than in nonuremic controls but not hemodialysis patients. Serum PCT concentrations may serve as a useful adjunct to traditional markers of inflammation in detecting and monitoring inflammation and peritonitis in PD patients.
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Affiliation(s)
- Galip Guz
- Department of Nephrology, Gazi University Faculty of Medicine Cankaya, Ankara, Turkey.
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Hizel K, Maral I, Karakus R, Aktas F. The influence of BCG immunisation on tuberculin reactivity and booster effect in adults in a country with a high prevalence of tuberculosis. Clin Microbiol Infect 2004; 10:980-3. [PMID: 15522000 DOI: 10.1111/j.1469-0691.2004.00970.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The relationship of age and previous BCG vaccination with tuberculin skin test (TST) reactivity was investigated to assess the interpretation of TST results in the adult population of Turkey, where there is a high prevalence of tuberculosis and a routine BCG vaccination programme. The influences of age and BCG vaccine status on booster reaction were also evaluated. TST was applied (5 tuberculin units of purified protein derivative intradermally) to two healthy adult groups, namely 98 medical students and 187 elderly people in a retirement home. The TST was considered positive if an induration > or = 10 mm in diameter was produced. Subjects (41 elderly people and 39 students) with a reaction < 10 mm in diameter were retested 1 week later. There was no significant difference between the students (59.1%) and elderly subjects (58.8%) with respect to positive TST response. No influence of BCG scars on TST reactivity was observed in either group. The booster effect was seen more commonly in the elderly, but the presence of a BCG scar did not influence the booster effect in either group. It was concluded that a positive TST response and booster reaction in adults in high-prevalence countries may be caused by latent tuberculosis rather than previous vaccination.
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Affiliation(s)
- K Hizel
- Infectious Diseases Department, Gazi University Medical Faculty, Besevler, Ankara, Turkey.
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Abstract
In the present study, we present a patient with invasive pulmonary aspergillosis caused by Aspergillus fumigatus diagnosed by polymerase chain reaction (PCR) technique on blood and bronchoalveolar lavage fluid samples of the patient. The value of PCR in the diagnosis of aspergillosis is discussed.
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Affiliation(s)
- Kenan Hizel
- Department of Infectious Diseases, Gazi University Faculty of Medicine, Ankara, Turkey. .tr
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Abstract
An outbreak of aseptic meningitis due to echovirus 30 occurred in Ankara and Antalya in Turkey, during June to September 1999, with 176 cases fitting the clinical case definition. Cases were ascertained from attendees of the three hospitals in Ankara and one in Antalya. Medical files were reviewed and evaluated retrospectively. Clinical presentation and laboratory findings were typical of viral meningitis. Cerebrospinal fluid and/or stool samples of 86 patients were cultured for enteroviruses. Echovirus type 30 was isolated in 38 patients (44%). This is the first report and epidemiologic data about an aseptic meningitis outbreak due to echovirus type 30 from Turkey.
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Affiliation(s)
- E Ozkaya
- Virology Department of Refik Saydam Central Institute of Hygiene, Ankara, Turkey.
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Hizel K, Güzel O, Altunçekiç A, Gür D, Arman D. [Case report: difficulty in treating one event of Streptococcus pneumoniae meningitis]. MIKROBIYOL BUL 2003; 37:65-9. [PMID: 12838680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2023]
Abstract
Streptococcus pneumoniae is one of the leading causes of acute bacterial meningitis and the emergence of antibiotic resistant pneumococci is an increasing problem worldwide. In this report, a 22-years-old woman was presented with pneumococcal meningitis occurring twice in a 5 months period. After the first meningitis attack, the patient had been vaccinated by 23-valent polysaccharide vaccine but the illness has relapsed. Although S. pneumoniae which was isolated from the patient has been found intermediate resistant to penicillin and susceptible to ceftriaxone by E-test, the patient could be treated only with meropenem. The case has been presented and discussed for ceftriaxone failure in spite of in-vitro susceptibility. On the other hand, this case indicated that vaccination might fail to prevent recurrence.
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Affiliation(s)
- Kenan Hizel
- Gazi Universitesi Tip Fakültesi, Klinik Bakteriyoloji ve Enfeksiyon Hastaliklari Anabilim Dali, Ankara
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Abstract
Nocardiosis is an opportunistic infection especially in immunocompromised patients. Lungs are the most common infection sites and therapy poses some difficulties. We describe a case of pulmonary infection with Nocardia asteroides in a non-Hodgkin's lymphoma patient. Although the mortality from pulmonary nocardiosis is high in immunocompromised patients, our patient was successfully treated with trimethoprim-sulfamethoxazole (TMP/SMZ) and amikacin. Maintenance therapy with TMP/SMZ was continued for 1 year. This case supports the importance of the long-term maintenance treatment after the initial combination therapy.
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Affiliation(s)
- K Hizel
- Dept. of Clinical Bacteriology and Infectious Diseases, Ankara, Turkey.
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Cirak MY, Hizel K. [The value of polymerase chain reaction methods targeting two different gene regions for the diagnosis of brucellosis]. MIKROBIYOL BUL 2002; 36:271-6. [PMID: 12838660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2023]
Abstract
The conventional laboratory diagnosis of brucellosis, a worldwide zoonotic infection, depends on the isolation of organisms in cultures and serological methods. Recently, polymerase chain reaction (PCR) which is a widely used method for the identification of especially fastidious or slowly growing organisms, has been introduced for use in the diagnosis of brucellosis. The aim of this study was to evaluate the molecular diagnostic value of PCR method targeting two different gene regions in Brucella. For this purpose, the blood samples of 29 acute brucellosis patients (of them 13 were blood culture positive) whose serum agglutination titers were > or = 1/160, and 10 cases whose serum agglutination titers were 1/80 with negative blood culture, have been searched by PCR, targeting two different gene regions of Brucella DNA, and the sensitivities of the methods were compared. As a result, 51.7% of the patients were found to be positive by amplification of IS6501 gene (an insertion sequence of Brucella spp) and 48.3% of the patients were positive by amplification of 223-basepair region of the gene encoding 31-kDa Brucella abortus protein, by semi-nested PCR. In conclusion, the diagnostic application of PCR in brucellosis may be a good alternative compared to conventional methods by providing results in a short period of time, however its disadvantages such as low detection limit of bacterial DNA in blood samples, increased risk of carry-over contamination and higher cost must be further evaluated.
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Affiliation(s)
- Meltem Yalinay Cirak
- Gazi Universitesi Tip Fakültesi, Mikrobiyoloji ve Klinik Mikrobiyoloji Anabilim Dali, Ankara
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