Esra Tanyel
Ondokuz Mayıs University
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Publication
Featured researches published by Esra Tanyel.
Fitoterapia | 2009
Nuriye Tasdelen Fisgin; Yeliz Tanriverdi Cayci; Ahmet Yilmaz Coban; Düzgün Özatlı; Esra Tanyel; Belma Durupinar; Necla Tulek
The in vitro antimicrobial activity of Ankaferd Blood Stopper (ABS) was assessed on 102 clinical isolates from both Gram negative and Gram positive bacteria and four standard strains, including MRSA ATCC 43300, MSSA ATCC 25923, P. aeruginosa ATCC 27853 and E. coli ATCC 35218. ABS was significantly active against all bacteria investigated.
Tropical Doctor | 2009
Nuriye Tasdelen Fisgin; Esra Tanyel; Levent Doganci; Necla Tulek
Crimean-Congo haemorrhagic fever (CCHF) is a potentially fatal viral disease. In this study, the aim was to investigate the prognostic factors affecting the patients survival and risk factors to fatality. At Ondokuz Mayis University Faculty of Medicine, a tertiary referral centre near the CCHF epidemic region, patients with typical clinical findings and indicative microbiological results for IgM and/or reverse transcriptase-polymerase chain reaction of CCHF virus were enrolled in the study, from 2004 to 2007. Patients were divided into two subgroups according to their survival outcomes; group I (n = 44) survived patients and group II (n = 6) consisted of fatal cases. The median platelet count was significantly lower in the fatal group (11000/mm3) when compared to the survived group (49500/mm3). Aspartate transferase and alanine transferase (ALT) levels were significantly higher in group II, when compared to group I. Also, the median range of serum lactic dehydrogenase (LDH) and creatinine phosphokinase (CPK) levels were much more elevated, and prothrombin time (PT) and activated partial thromboplastin time (aPTT) were prolonged in fatal cases. There was also a significant difference in median age of these two groups. Advanced age, late admission, low platelet count, increased AST, ALT, CPK and LDH levels, and prolonged PT and aPTT could be an early indicator of poor prognosis in patients with CCHF.
Journal of Chemotherapy | 2012
Aydin Deveci; Ahmet Yilmaz Coban; Ozlem Acicbe; Esra Tanyel; Görkem Yaman; Belma Durupinar
Abstract Treatment of multidrug resistant (MDR) Acinetobacter baumannii infections causes some problems as a result of possessing various antibacterial resistance mechanisms against available antibiotics. Combination of antibiotics, acting by different mechanisms, is used for the treatment of MDR bacterial infections. It is an important factor to determine synergy or antagonism between agents in the combination for the constitution of effective therapy. The study aimed to determine in vitro interactions interpreted according to calculated fractional inhibitory concentration (FIC) index between sulbactam and ceftazidime, ceftriaxone, cefepime, ciprofloxacin, gentamicin, meropenem, tigecycline, and colistin. Ten clinical isolates of A. baumannii were tested for determination of synergistic effects of sulbactam with different antimicrobial combinations. Minimal inhibitory concentration (MIC) values of both sulbactam and combined antibiotics decreased 2- to 128-fold. Synergy and partial synergy were determined in combination of sulbactam with ceftazidime and gentamicin (FIC index: ≤0·5 or >0·5 to <1) and MIC values of both ceftazidime and gentamicin for five isolates fell down below the susceptibility break point. Similarly, MIC value of ciprofloxacin for six ciprofloxacin resistant isolates was determined as below the susceptibility break point in combination. However, all isolates were susceptible to colistin and tigecycline, MIC values of both were decreased in combination with sulbactam. Although synergistic and partial synergistic effects were observed in the combination of sulbactam and ceftriaxone, all isolates remained resistant to ceftriaxone. The effect of cefepime–sulbactam combination was synergy in five, partial synergy in one and indifferent in four isolates. Meropenem and sulbactam showed a partial synergistic effect (FIC index: >0·5 to <1) in three, an additive effect (FIC index: 1) in one and an indifferent effect (FIC index: >1–2) in six isolates. Antagonism was not determined in any combination for clinical A. baumannii isolates in the study. In conclusion, sulbactam is a good candidate for combination treatment regimes for MDR A. baumannii infections.
Southern Medical Journal | 2010
Nuriye Tasdelen Fisgin; Yuksel Aliyazicioglu; Esra Tanyel; Ahmet Yilmaz Coban; Fatma Ulger; Muammer Zivalioglu; Saban Esen; Hakan Leblebicioglu
Objective: Neopterin (NT) is a compound of low molecule-based pteridine. It is secreted by macrophages as a response to the stimulation of cytokines such as interferon-γ, interferon-1β, tumor necrosis factor α or bacteria compounds such as lipopolysaccharides. Procalcitonin (PCT) levels may increase in the course of bacterial, parasitic, and fungal infections. Therefore, it can be used for the differential diagnosis of the infection, especially in cases of serious inflammation. In this study, the role of NT, and PCT in sepsis as a prognostic factor, and the relationship between the two parameters are examined. Methods: From November 1, 2005 through December 31, 2005, fifty patients with sepsis admitted to the Department of the Infectious Diseases and Clinical Microbiology and/or Department of Anaesthesiology and Reanimation were enrolled in the study. Patients were divided in two subgroups according to their survival: group I (n = 23) nonsurviving patients and group II (n = 27) surviving patients. Results: Serum NT levels have been found to be increased in group I (median: 15 ng/mL, range: 2–69) when compared to group II (median: 5 ng/mL, range: 2–130). The difference was statistically significant (P = 0.03). Other laboratory parameters and PCT levels (group I median: 0.13; group II median: 0.08; P < 0.05) were not different between the two groups. Conclusions: NT was found to be a prognostic factor in patients with sepsis.
American Journal of Dermatopathology | 2008
Esra Tanyel; Nuriye Tasdelen Fisgin; Levent Yildiz; Hakan Leblebicioglu; Levent Doganci; Necla Tulek
Here, we describe a 38-year-old male with an abrupt manifestation acute panniculitis as unusual presentation of brucellosis. Brucellosis is a reemerging disease in Turkey, and the disease is primarily transmitted from farm animals to humans. Farmers and shepherds are the major risk groups for brucellosis in Anatolia. Brucellosis may involve almost all systems and organs, including the skin, and may mimic a wide range of illness and syndromes. Although the cutaneous manifestation of brucellosis is not disease specific, but it occurs in about 6%-13% of patients with brucellosis. Some of these lesions including rashes, papules, ulcers, abscess, erythema nodosum, ecchymosed skin rash, purpura, and vasculitis may be seen frequently in brucellosis, but panniculitis is rarely described. The case confirmed by positive blood culture had manifest skin lesion as an initial finding represented by lobular panniculitis with vasculitis.
Epidemiology and Infection | 2010
N. Tasdelen Fisgin; Levent Doganci; Esra Tanyel; Necla Tulek
Crimean Congo haemorrhagic fever (CCHF) has been an emerging tick-borne infection in some parts of Turkey since 2002, with a number of fatalities. Many of the initial non-specific symptoms of CCHF can mimic other common infections. Additionally, the seasonal pattern of the epidemic, and the waning attention of healthcare workers to the yearly index cases caused some delays in appropriate patient care and treatment. Between March 2004 and August 2008, 140 confirmed adult cases were evaluated retrospectively for initial diagnosis and treatment delays. This study clearly demonstrated that there are particular delays (4.8 days) in the referral system to initiate effective antiviral treatment in the tertiary-care centre which significantly affect fatality rates (P>0.05). A large number of patients (n=95, 68%) received an initial misdiagnosis of various infections other than CCHF. In conclusion, continuous medical education regarding CCHF in the epidemic area is essential in order to achieve a better survival rate from this deadly infection.
American Journal of Forensic Medicine and Pathology | 2009
Berna Aydın; Esra Tanyel; Başar Çolak; Nuriye Tasdelen Fisgin; Necla Tulek
Because forensic medicine workers have a greater occupational risk for infectious diseases, strict rules and measures against infections must be implemented at every stage of forensic medicine practices. In this study, we aim to evaluate the infection control implementations in forensic medicine practices in Turkey. A questionnaire survey was mailed to forensic medicine specialists and residents between April and June 2005. The questionnaire consisted of 36 questions whose designed was based on standard precautions and protective barriers against infectious risks. In all, 111 doctors from 27 different cities responded to the questionnaire. Of those doctors who responded, 43.2% reported performing external examination anywhere. The percentage of doctors performing external examinations who regularly wore gloves, masks, and gowns, and washed hands with a disinfectant were 81.5%, 24.7%, 30.9%, and 81.5%, respectively. The percentage of doctors performing autopsies who regularly wore masks, protective eye-wear, gloves, special gloves, and special boots were 59.6%, 10.6%, 98.9%, 71.3%, and 36.2%, respectively. Only 2 negative pressure rooms were reported. According to these results, precautionary measures against infectious risks in forensic medicine practice in our country are insufficient. Conditions to facilitate and to improve the compliance with infection control procedures must be prepared.
International Journal of Infectious Diseases | 2015
Esra Tanyel; Nil Guler; Murat Hokelek; Fatma Ulger; Mustafa Sunbul
Babesiosis is a zoonotic disease that may be asymptomatic or result in severe clinical conditions, with severe hemolysis, hepatic, and renal failure, in humans. Clinical symptoms depend on the species and immune status of the host. The disease is especially severe in those of advanced age, those with an immune deficiency, and the splenectomized. A severe case of babesiosis that developed in a splenectomy patient is presented here; the patient was admitted from a rural region with severe anemia and a deterioration in her general condition, with an initial diagnosis of malaria. In such situations, an exchange transfusion (ET), in addition to antimicrobial treatment, could be lifesaving.
Pathogens and Global Health | 2016
Esra Tanyel; Mustafa Sunbul; Tom E. Fletcher; Hakan Leblebicioglu
Crimean–Congo hemorrhagic fever (CCHF) is a potentially fatal tick-borne viral infection that is widely distributed worldwide. The diagnosis is frequently missed due to the non-specific initial symptoms and the differential diagnosis included many infectious and non-infectious causes. This retrospective study describes the clinical features and final diagnoses of 116 suspect CCHF cases that were admitted to a tertiary CCHF center in Turkey, and were CCHF IgM and PCR negative.
Tropical Doctor | 2008
Levent Doganci; Esra Tanyel; Hakki Basıbuyuk; Özge Darka
SUMMARY In daily medical practice, streptococcal toxic shock syndrome is an infrequent clinical entity which carry a very high risk of fatality. Early recognition of this toxin mediated immunopathological disease is very important to apply necessary invasive procedures such as an prompt amputation of the effected areas to save the patient. Here, we report a 47 year-old male farmer with a fatal streptococcal toxic shock syndrome to highlight the importance of emergency care and aggresive surgical intervention in similar situations.