Publications by authors named "Sig A"

Objective: Recent research has suggested that fungemia may demonstrate an epidemiologic shift in etiologic agents. This study focuses on the agents causing fungemia and antifungal resistance in a tertiary hospital.

Patients And Methods: We evaluated all-age fungemia cases admitted to Balikesir Ataturk City Hospital in 2017-2021.

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Introduction: Clinical presentation of brucellosis is variable. Therefore, it must be confirmed with laboratory findings. Standard tube agglutination test (STAT) is commonly used for diagnosis of brucellosis.

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Article Synopsis
  • - The study aimed to determine the prevalence of azole resistance in Aspergillus fumigatus strains from clinical and environmental sources in Turkey, involving 21 centers over a 16-month period.
  • - A total of 1.3% of environmental isolates and 3.3% of clinical isolates showed azole resistance, with specific TR34/L98H mutations found in nearly half of the resistant samples.
  • - Although the overall rate of azole resistance was low, the presence of wild-type cyp51A in over half of the strains suggests that other resistance mechanisms may be developing.
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The frequency of invasive fungal infections shows a rising trend as well as a high morbidity and mortality. Among the causative agents, a shift toward the non-albicans species including species complex is being observed in several centers. Echinocandin resistance is increasingly published; however, isolates presenting with an in vitro resistance have not yet been reported from Turkey.

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The frequency and variety of infections caused by fungi are increasing. However, changes and intercenter and regional differences are observed in the distribution of fungal species over the years. It is important to update the epidemiological data in order to enable early and appropriate treatment.

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Background/aim: Cystic fibrosis is an autosomal recessive disease with a defect in mucociliary activity that is characterized by recurrent pulmonary infections. Bacterial agents frequently implicated in airway colonization are Haemophilus influenzae, Staphylococcus spp., and Pseudomonas spp.

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Background: Bloodstream infections are one of the major causes of healthcare-associated morbidity and mortality. The present study aims to investigate the prevalence of the microorganisms isolated from blood cultures and to evaluate susceptibilities to antimicrobial agents in a tertiary center, Gulhane Training and Research Hospital, Ankara, Turkey.

Methods: Blood cultures (BCs) were incubated in BACTEC/9050 (Becton Dickinson, USA) (2007 - 2015) and BacT/ALERT (bio-Merieux, France) (2014 - 2016) automated systems.

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Streptomycin (STR) and ethambutol (EMB) are important drugs used for the treatment of tuberculosis. There is a need for fast, reliable and inexpensive methods for detecting resistance to these drugs. The aim of this study was to evaluate the performance of the crystal violet decolorization assay (CVDA) for the detection of STR and EMB resistance that is important drugs in tuberculosis treatment.

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Superficial fungal infections caused by species are common skin diseases. Therefore, this study aimed to develop a new formulation containing oxiconazole nitrate, which is an azole group derivative for antifungal treatment, as a thermosensitive gel since there has been no literature study until now. MIC value of the novel thermosensitive formulation against three species was calculated and time-dependent antifungal activity analysis was performed.

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Complementary medicine methods have a long history, but modern medicine has just recently focused on their possible modes of action. Medicinal leech therapy (MLT) or hirudotherapy, an old technique, has been studied by many researchers for possible effects on various diseases such as inflammatory diseases, osteoarthritis, and after different surgeries. has widest therapeutic usage among the leeches, but worldwide, many different species were tested and studied.

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Objective: The present study aimed to evaluate the performances of the BACTEC MGIT 960 SL DST kit and the GenoType MTBDRsl test for detecting second-line antituberculosis drug resistance in Multidrug-resistant TB (MDR-TB) cases.

Materials And Methods: Forty-six MDR-TB strains were studied. Second-line antituberculosis drug resistances were detected using the BACTEC MGIT 960 SL DST kit and the GenoType MTBDRsl test.

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Background: It has been approximately 70 years since the discovery of the Zika virus (ZIKV). It had been established that the virus causes mild infections and is confined to Africa and Asia; however, major changes in the clinical and epidemiologic patterns of ZIKV infection have occurred in recent years. The virus has attracted intense interest because of the possible association of several autoimmune and neurodevelopmental disorders.

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The aim of this multicenter study was to evaluate the performance of the crystal violet decolorization assay (CVDA) for detection of multidrug resistant tuberculosis (MDR-TB). This study was performed in 11 centers in two phases. A total of 156 isolates were tested for INH and RIF resistance.

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Multidrug-resistant tuberculosis (MDR-TB) is defined as resistance to at least isoniazid (INH) and rifampicin (RIF), and it complicates the implementation of tuberculosis control programmes. The rapid detection of MDR-TB is crucial to reduce the transmission of disease. The nitrate reductase assay (NRA) is one of the colorimetric susceptibility test methods for rapid detection of MDR-TB and based on the ability of reduction of nitrate to nitrite by Mycobacterium tuberculosis.

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