Browsing by Author "Altindis, Mustafa"

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Covıd-19 Enfeksiyonlarında Dizi Analizi Yöntemlerine Genel Bakış
(2022) Kılbaş, Elmas Pınar Kahraman; Aslan, Ferhat Gürkan; Altindis, Mustafa
Şiddetli akut solunum sendromu koronavirüs 2 (SARS-CoV-2), koronavirüs hastalığı 2019'un (COVID-19) etkeni olarak tanımlandı ve genomik veriler ilk olarak 10 Ocak 2020'de Çin tarafından paylaşıldı. O tarihten itibaren, dünya genelinde toplanan örneklerden viral genomu dizilemek için çok büyük çaba harcandı. Yakın geçmişte, kökenleri izlemek ve bulaşıcı ajanların evrimini anlamak, salgınların yayılma zincirlerini araştırmak, hem etkili ve hızlı moleküler tanı testlerinin geliştirilmesini kolaylaştırmak hem de tedavi ve aşıların araştırılmasına katkıda bulunmak için, yeni nesil dizileme (NGS) stratejileri, başarıyla kullanılmıştır. Teknoloji ve bilimdeki son gelişmeler, COVID-19'un etkeni olan ağır akut solunum sendromu koronavirüsü-2'nin (SARS-CoV-2) genomlarının, bir vakanın tanımlanmasından sonraki saatler veya günler içinde dizilenmesine olanak sağlamıştır. Bu sayede, ilk kez, bir pandeminin halk sağlığı ve epidemi boyutu gerçek zamanlı olarak izlenebilmektedir. SARS-CoV-2 genom dizilerinin erken paylaşımı, moleküler tanı testlerinin hızla geliştirilmesine olanak sağlayarak, küresel hazırlığa ve karşı önlemlerin tasarımına katkıda bulunmuştur. Hızlı, büyük ölçekli virüs genom dizilimi, viral salgınların dinamiklerini anlama ve kontrol önlemlerinin etkinliğini değerlendirmede oldukça önemlidir. SARS-CoV-2 gen dizilimi, gelişmiş tanılar, karşı önlemlerin geliştirilmesi ve hastalık epidemiyolojisinin araştırılması dahil olmak üzere birçok farklı alanda kullanılabilir. COVID-19'un etiyolojik ajanının genomik dizisini tam olarak tanımlamak için etkili ve hızlı dizileme yöntemlerinin geliştirilmesi, tanısal moleküler testlerin tasarımı ve pandemi yayılımını azaltmada etkili önlemlerin alınması ve stratejilerin belirlenmesinde temel olmuştur. Mevcut dizilerin sayısından anlaşıldığı gibi, SARS-CoV-2 genomlarına, farklı yaklaşımlar ve dizileme yöntemleri uygulanabilir. Bununla birlikte, her teknoloji ve dizileme yaklaşımının kendi avantajları ve sınırlamaları vardır. Bu derlemede, SARS-CoV-2 genomlarının dizilenmesi için şu andaki mevcut platformlar ve metodolojik yaklaşımlardan bahsedilecektir.
Citation - WoS: 0
Investigation of the Synergic Effect of the Colistin/Sulbactam Combination in Carbapenem-Resistant acinetobacter Baumannii Complex Strains With Time-Kill and Checkerboard Methods
(Bilimsel Tip Yayinevi, 2021) Kahraman Kılbaş, Elmas Pınar; Hatipoglu, Huseyin; Kilic, Umit; Kahraman Kilbas, Elmas Pinar; Koroglu, Mehmet; Altindis, Mustafa; Tıbbi Hizmetler ve Teknikler Bölümü
Introduction: Infections caused by carbapenem-resistant Acinetobacter strains have become very common in recent years, and the most frequently used medicinal treatment is colistin. Combination treatments should also be applied to prevent development of resistance to colistin. This study examines the in vitro synergic effect of the colistin/sulbactam combination in carbapenem-resistant Acinetobacter strains with the time-kill and checkerboard methods. Materials and Methods: Twenty carbapenem-resistant Acinetobacter baumannii-calcoaceticus complex strains, which were isolated from various clinical samples, were included in this study. Strains were identified with mass spectrometry, and antibiotic sensitivity results were determined with the VITEK 2 (R) system. The in vitro effect and synergic activity of the colistin, sulbactam, and colistin/sulbactam combination on the carbapenem-resistant strains were determined using the time-kill and checkerboard methods. Seventeen strains were examined with the time-kill method, and twenty strains were examined using the checkerboard method. The fractional inhibitory concentration index of strains was calculated for detection of synergic effect. Results: Using the time-kill method applied on the colistin/sulbactam combination showed that the combination had a synergic effect on all 17 strains, while sulbactam alone did not have a bactericidal effect in the studied concentrations. When applying the checkerboard method, it was determined that the colistin/sulbactam combination had a synergic effect on 17 of the strains (85%) and an additive effect on 3 strains (15%), sulbactam had a low effect alone (15%), and colistin was effective on all strains. Conclusion: Study results indicated that the colistin/sulbactam combination had a high level of synergic effect on all studied strains using both methods.
Citation - WoS: 8
Citation - Scopus: 10
Managing Viral Emerging Infectious Diseases Via Current and Future Molecular Diagnostics
(Mdpi, 2023) Kahraman Kılbaş, Elmas Pınar; Kilbas, Elmas Pinar Kahraman; Tıbbi Hizmetler ve Teknikler Bölümü
Emerging viral infectious diseases have been a constant threat to global public health in recent times. In managing these diseases, molecular diagnostics has played a critical role. Molecular diagnostics involves the use of various technologies to detect the genetic material of various pathogens, including viruses, in clinical samples. One of the most commonly used molecular diagnostics technologies for detecting viruses is polymerase chain reaction (PCR). PCR amplifies specific regions of the viral genetic material in a sample, making it easier to detect and identify viruses. PCR is particularly useful for detecting viruses that are present in low concentrations in clinical samples, such as blood or saliva. Another technology that is becoming increasingly popular for viral diagnostics is next-generation sequencing (NGS). NGS can sequence the entire genome of a virus present in a clinical sample, providing a wealth of information about the virus, including its genetic makeup, virulence factors, and potential to cause an outbreak. NGS can also help identify mutations and discover new pathogens that could affect the efficacy of antiviral drugs and vaccines. In addition to PCR and NGS, there are other molecular diagnostics technologies that are being developed to manage emerging viral infectious diseases. One of these is CRISPR-Cas, a genome editing technology that can be used to detect and cut specific regions of viral genetic material. CRISPR-Cas can be used to develop highly specific and sensitive viral diagnostic tests, as well as to develop new antiviral therapies. In conclusion, molecular diagnostics tools are critical for managing emerging viral infectious diseases. PCR and NGS are currently the most commonly used technologies for viral diagnostics, but new technologies such as CRISPR-Cas are emerging. These technologies can help identify viral outbreaks early, track the spread of viruses, and develop effective antiviral therapies and vaccines.
Citation - WoS: 0
Citation - Scopus: 0
Saliva in the Diagnosis of Covid-19
(Galenos Publ House, 2021) Kahraman Kılbaş, Elmas Pınar; Altindis, Mustafa; Tıbbi Hizmetler ve Teknikler Bölümü
The use of saliva samples for the diagnosis of severe acute respiratory syndrome-Coronavirus-2 (SARS-CoV-2) provides several advantages over the use of nasopharyngeal (NP) swabs, such as comfort, ease of self-collection, less use of personal protective equipment, and protection of healthcare personnel from transmission. This review included current studies using saliva samples for the detection of SARS-CoV-2, comparing its sensitivity, cycle threshold, and specificity with those of NP swab. In the literature, the sensitivity rates of saliva samples in the diagnosis of SARS-CoV-2 ranged from 70% to 98%. Despite different opinions, we concluded that saliva is a reliable sample for the detection of SARS-CoV-2. However, studies with large samples and comparing different diagnostic methods are needed to reach precise and reliable results and include saliva collection in diagnostic guidelines.
Citation - WoS: 0
The Use of Probiotics in the Treatment and Prophylaxis of Various Diseases in Turkiye: a Systematic Review
(Bilimsel Tip Yayinevi, 2023) Kahraman Kılbaş, Elmas Pınar; Altindis, Mustafa; Tıbbi Hizmetler ve Teknikler Bölümü
The aim of this study is to analyze the available information on the use of probiotics containing different microorganisms, singly or in combination, in order to investigate the effect of probiotics on the treatment, prophylaxis and microbiota of various diseases. In addition to Pubmed, Google Scholar, SCOPUS, EMBASE, Cochrane Library of Systematic Reviews, CINAHL, AMED, Turkish Medline electronic da- tabases, the gray literature was searched to cover the years 2004-2021. Randomized controlled studies (RCTs) included in the specified selection criteria were brought together. RCTs were evaluated using the Cochrane risk of bias tool. Of the 32 RCTs included in total, only yeast (Saccharomyces spp.) was administered in fourteen, only Lactobacillus spp. in six, Bifidobacterium spp. only in four, and probiotic supplementation containing more than one bacterial strain in six. Only 10/32 of the included studies fully reported the probiotic strain, and 22/32 reported only at the species level. In all nine studies using probiotics for the treatment of diarrhea, probiotics were reported to shorten the duration of diarrhea and length of hospital stay. Four of the five studies reporting the use of probiotics in the treatment of necrotizing enterocolitis reported that probiotics were not effective in reducing the incidence of necrotizing enterocolitis, but could improve nutritional tolerance. In two of the four RCTs investigating the use of probiotics in the treatment of Helicobacter pylori infec- tion, it was stated that the side effects associated with eradication therapy decreased. In both studies conducted for prophylaxis, it was reported that probiotics prevent antibiotic-associated diarrhea. This study shows that probiotics have positive results for the treatment indications and prophylaxis of various diseases. For the sustainability of these health benefits and the safe administration of probiotics, more research is needed that includes strain information and side effect reports.