31 results on '"MUTLU, Esvet"'
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2. Investigation of dense fine speckled pattern and anti-dense fine speckled 70 antibody by a single step assay
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Onarer, Pelin, primary, Mutlu, Esvet, additional, Öngüt, Gözde, additional, and Gültekin, Meral, additional
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- 2022
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3. Comparison of a novel antigen detection test with reverse transcription polymerase chain reaction assay for laboratory diagnosis of SARS-CoV-2 infection
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Cirit, Osman Sezer, primary, Mutlu, Esvet, additional, Sancak, Banu, additional, Kocagöz, Tanil, additional, Can, Özge, additional, Çicek, Candan, additional, Arzu Sayiner, Ayca, additional, Appak, Özgür, additional, Uyar, Neval Yurttutan, additional, Külah, Canan, additional, Çiçek, Aysegül Çopur, additional, Özgümüs, Osman Birol, additional, Ay Altintop, Yasemin, additional, Saatçi, Esma, additional, Karsligil, Tekin, additional, Zer, Yasemin, additional, Özen, Nevgün Sepin, additional, Çekin, Yesim, additional, Karahan, Zeynep Ceren, additional, Evren, Ebru, additional, Karakoç, Ayse Esra, additional, Orhan, Sultan Gülbahçe, additional, Mutlu, Derya, additional, Bozdemir, Tugba, additional, Çayci, Yeliz Tanriverdi, additional, Çinar, Canberk, additional, Tasbakan, Meltem, additional, Mert, Merve, additional, Çinar, Ece, additional, Kutsoylu, Oya Özlem Eren, additional, Kocagöz, Sesin, additional, Ertürk, Ayse, additional, Çelik, Ilhami, additional, Mete, Ayse Özlem, additional, Günalp Eneyli, Müge, additional, Akdemir, Irem, additional, Karakök, Taliha, additional, Inan, Dilara, additional, Atilla, Aynur, additional, Taflan, Şevket Onur, additional, and Yörük, Kağan Etka, additional
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- 2022
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4. Gargle and mouthwash can replace nasopharyngeal swab sampling when concentrated with a new method for diagnosis of COVID-19
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Sancak, Banu, primary, Mutlu, Esvet, additional, Cirit, Osman Sezer, additional, Kocagöz, Tanil, additional, Can, Özge, additional, Çicek, Candan, additional, Sayiner, Ayça Arzu, additional, Appak, Özgür, additional, Uyar, Neval Yurttutan, additional, Külah, Canan, additional, Çiçek, Aysegül Çopur, additional, Özgümüs, Osman Birol, additional, Altintop, Yasemin Ay, additional, Saatçi, Esma, additional, Karsligil, Tekin, additional, Zer, Yasemin, additional, Özen, Nevgün Sepin, additional, Çekin, Yesim, additional, Karahan, Zeynep Ceren, additional, Evren, Ebru, additional, Karakoç, Ayse Esra, additional, Gülbahçe, Sultan, additional, Mutlu, Derya, additional, Bozdemir, Tugba, additional, Çayci, Yeliz Tanriverdi, additional, Çinar, Canberk, additional, Tasbakan, Meltem, additional, Mert, Merve, additional, Çinar, Ece, additional, Kutsoylu, Oya Özlem Eren, additional, Kocagöz, Sesin, additional, Ertürk, Ayse, additional, Çelik, Ilhami, additional, Mete, Ayse Özlem, additional, Eneyli, Müge Günalp, additional, Akdemir, Irem, additional, Karakök, Taliha, additional, Inan, Dilara, additional, and Atilla, Aynur, additional
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- 2022
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5. Relationship of HLA-B alleles on susceptibility to and protection from HIV infection in Turkish population.
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Darbas, Sule, Inan, Dilara, Kilinc, Yahya, Arslan, Habibe Sema, Ucar, Fahri, Boylubay, Ozaydin, Koksoy, Sadi, Mutlu, Esvet, Yucel, Burcu, and Ekinci, Nurten Sayin
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ALLELES ,HIV infection complications ,HLA histocompatibility antigens ,AIDS - Abstract
OBJECTIVE: Many human leukocyte antigen (HLA)-B alleles are associated with an increased risk of Acquired Immune Deficiency Syndrome (AIDS) and Human Immunodeficiency Virus (HIV) progression; however, their distribution varies among different racial/ethnic groups. Abacavir used in the treatment of AIDS significantly increases the risk of hypersensitivity reactions in patients with HLA-B*57:01. The aim of this study was to determine the distribution of HIV-associated HLA-B subgroups (high and low resolution) and HLA-B*57:01 associated with Abacavir sensitivity in Turkiye. METHODS: This retrospective case-control study consisted of 416 (F/M:111/305) HIV positive patients and 416 (F/M:111/305) healthy controls. HLA-B alleles were identified using Luminex based low-resolution method and further subgrouped by sequence-based high-resolution typing. RESULTS: Our data showed that in patients with HIV-1 infection, HLA-B*15, *35, and *51 allele frequencies were higher, while the HLA-B*07, *14 and *55 allele frequencies were lower as compared to the controls. It was determined that HLA-B*15:01, *35:01, *35:08, and *51:01 alleles frequencies were higher in the patients with HIV-1 infection compared to the controls as HLA-B*07:02, *14:01, *44:01, and *55:01 allele frequencies were detected low. HLA-B*57:01 allele positivity, which is important in Abacavir hypersensitivity, was lower than controls, and this difference was not statistically significant. CONCLUSION: Our results suggest that, HLA-B*07, *14, and *55 alleles and HLA-B*07:02, *14:01, *44:01, and *55:01 subgroups might have a protective effect, while HLA-B*15, *35, and *51 alleles and HLA-B*15:01, *35:01, *35:08, and *51:01 subgroups might play a role in susceptibility to HIV-1 infection. [ABSTRACT FROM AUTHOR]
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- 2023
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6. Gargle and Mouthwash Can Replace Nasopharyngeal Swab Sampling When Concentrated with a New Method for the Diagnosis of COVID-19
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APPAK, ÖZGÜR, ATİLLA, AYNUR, İNAN, DİLARA, Karakök, Taliha, AKDEMİR KALKAN, İREM, Günal Eneyli, Müge, METE, AYŞE ÖZLEM, ÇELİK, İLHAMİ, ERTÜRK, AYŞE, KOCAGÖZ, AYŞE SESİN, EREN KUTSOYLU, OYA ÖZLEM, ÇINAR, ECE, MERT, MERVE, TAŞBAKAN, MELTEM, Çinar, Canberk, TANRIVERDİ ÇAYCI, YELİZ, BOZDEMİR, TUĞBA, MUTLU, DERYA, Gülbahçe Orhan, Sul, KARAKOÇ, AYŞE ESRA, EVREN, EBRU, KARAHAN, ZEYNEP CEREN, ÇEKİN, YEŞİM, Sepin Özen, Nevgün, ZER, YASEMİN, KARSLIGİL, TEKİN, Saatci, Esma, AY ALTINTOP, YASEMİN, ÖZGÜMÜŞ, OSMAN BİROL, ÇOPUR ÇİÇEK, AYŞEGÜL, KÜLAH, CANAN, YURTTUTAN UYAR, NEVAL, SAYINER, AYÇA ARZU, ÇİÇEK, CANDAN, CAN, ÖZGE, CİRİT, OSMAN SEZER, MUTLU, ESVET, SANCAK, BANU, and KOCAGÖZ, ZÜHTÜ TANIL
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- 2021
7. Comparison of a novel antigen detection test with reverse transcription PCR (RT- PCR) assay for laboratory diagnosis of SARS-CoV-2 infection
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KOCAGÖZ, AYŞE SESİN, CİRİT, OSMAN SEZER, MUTLU, ESVET, EREN KUTSOYLU, OYA ÖZLEM, ERTÜRK, AYŞE, APPAK, ÖZGÜR, GÜNAL ENEYLI, Müge, METE, AYŞE ÖZLEM, YÖRÜK, Kagan Etka, ÇELİK, İLHAMİ, TAFLAN, Sevket Onur, ATİLLA, AYNUR, İNAN, DİLARA, KARAKÖK, Taliha, AKDEMİR, İREM, TAŞBAKAN, MELTEM, MERT, MERVE, ÇINAR, Canberk, TANRIVERDİ ÇAYCI, YELİZ, MUTLU, DERYA, BOZDEMİR, TUĞBA, GÜLBAHÇE ORHAN, Sultan, KARAKOÇ, AYŞE ESRA, EVREN, EBRU, KARAHAN, ZEYNEP CEREN, ÇEKİN, YEŞİM, SEPIN ÖZEN, Nevgün, ZER, YASEMİN, KARSLIGİL, TEKİN, SAATÇI, Esma, AY ALTINTOP, YASEMİN, ÖZGÜMÜŞ, OSMAN BİROL, ÇOPUR ÇİÇEK, AYŞEGÜL, KÜLAH, CANAN, YURTTUTAN UYAR, NEVAL, SAYINER, AYÇA ARZU, ÇİÇEK, CANDAN, KOCAGÖZ, ZÜHTÜ TANIL, SANCAK, BANU, ÇINAR, ECE, and CAN, ÖZGE
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- 2021
8. Ülseratif Kolit ve Crohn Hastalığı Ayırımında Serolojik Belirteçlerin Tanısal Değeri
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BAKIRTAŞ, Mehmet, primary, TAZEGÜL, Gökhan, additional, MUTLU, Esvet, additional, GÜLTEKİN, Meral, additional, and YILDIRIM, Bülent, additional
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- 2021
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9. Systemic antibody response to Clostridium difficile in colonized patients with and without symptoms and matched controls
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Sánchez-Hurtado, Karla, Corretge, Maria, Mutlu, Esvet, McIlhagger, Rowan, Starr, John M., and Poxton, Ian R.
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- 2008
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10. Molecular characterization and antimicrobial susceptibility patterns of Clostridium difficile strains isolated from hospitals in south-east Scotland
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Mutlu, Esvet, Wroe, Allison J., Sanchez-Hurtado, Karla, Brazier, Jon S., and Poxton, Ian R.
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- 2007
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11. Evaluation of the Two Different Real Time Polymerase Chain Reaction Methods Used for BK Virus (BKV) Quantification and BKV Genotype Assignment
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ERMAN DALOĞLU, Aylin, primary, MUTLU, Derya, additional, SAĞLIK, İmran, additional, CAN SARINOĞLU, Rabia, additional, MUTLU, Esvet, additional, G.M. NIESTERS, Hubert, additional, and ÇOLAK, Dilek, additional
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- 2019
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12. Evaluation of Samples with DFS Staining Pattern Detected by Indirect Immunofluorescence Assay
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Togay, Alper, primary, Mutlu, Esvet, additional, Ongut, Gozde, additional, Mutlu, Derya, additional, Colak, Dilek, additional, and Gultekin, Meral, additional
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- 2018
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13. BK Virüs (BKV) Kantitasyonunda Kullanılan İki Farklı Gerçek Zamanlı Polimeraz Zincir Reaksiyonu Yönteminin Karşılaştırması ve BKV Genotip Tayini.
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ERMAN DALOĞLU, Aylin, MUTLU, Derya, SAĞLIK, İmran, CAN SARINOĞLU, Rabia, MUTLU, Esvet, NIESTERS, Hubert G. M., and ÇOLAK, Dilek
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- 2019
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14. Measuring of BKV specific immune response by ELISPOT method in renal transplant patients
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Mutlu, Esvet, Gültekin, Meral, and Tıbbi Mikrobiyoloji Anabilim Dalı
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Kidney transplantation ,Allerji ve İmmünoloji ,Kidney diseases ,Enzyme-linked immunosorbent assay ,viruses ,Allergy and Immunology ,Immunity ,virus diseases ,Kidney failure-chronic ,Polyomavirus - Abstract
RENAL TRANSPLANT HASTALARINDA BKV SPESİFİK İMMÜN YANITIN ELISPOT YÖNTEMİ İLE ÖLÇÜLMESİBKV, böbrek nakil hastalarında geri dönüşü olmayan allograft hasarına neden olabilen en sık viral etkenlerden biridir. BKV seroprevalansı sağlıklı bireylerde %90'lara ulaşmaktadır. Asemptomatik seyreden ve genellikle erken çocukluk döneminde geçirilen primer enfeksiyonun ardından BKV böbrek ve ürotelyal hücrelerde latent olarak kalır. İmmün sistemi sağlam bireylerin %10-40'ında reaktivasyon ve asemptomatik virüriler görülebilir. BKV böbrek transplant hastalarında immün supresyonla birlikte kendi kendini sınırlayan reaktivasyonlara neden olabilir veya BKVN oluşturabilir. BKVN nakilden sonraki ilk yılda hastaların %1-10'unda görülür ve bu hastaların %50-90'ında greft kaybına neden olur. Çalışmamızda Prof. Dr. Tuncer Karpuzoğlu Organ Nakli Enstitüsünde böbrek nakli yapılan 31 olgudan nakilden önce ve nakli takiben +1 ay, +3 ay ve +6 ay sonra kan örnekleri alındıktan sonra PKMN izole edildi ve saklandı. PKMN'de BKV spesifik T hücre sıklığı ELISPOT yöntemi kullanılarak araştırıldı. Hastaların plazma veya idrar BKV viral yük tayinleri gerçek zamanlı PZR ile ölçüldü. Nakilden sonra 7. ayda reaktivasyon gelişen bir hasta da çalışmaya dahil edildi ve reaktivasyon sonrası toplam 4 kez BKV spesifik T hücre yanıtları ölçüldü.Çalışmaya dahil edilen hastaların tüm örneklerinde BKV spesifik T hücre yanıtı ölçülebilir düzeyde bulundu. Kontrol grubunun ortalama spot sayıları ile hastaların transplantasyon öncesi elde edilen spot sayıları arasında anlamlı fark saptanmadı. Hastaların BKV spesifik immün yanıtları karşılaştırıldığında, yanıtın immün supresyonun en yoğun olduğu 1. ayda en düşük olduğu saptandı. İzlem sırasında reaktivasyon gelişen hastalarla; reaktivasyon gelişmeyen hastaların nakil öncesi spot sayıları arasında fark gözlenmedi. İzlem süresince 8 hastada reaktivasyon gelişti. Reaktivasyon gelişen ve BKV DNA'ları 2 ve 3 kez bakılan 2 hastada reaktivasyon zamanında BKV spesifik T hücre yanıtının düştüğü ve immün yanıtta artışın BKV viral yükünde azalma veya temizlenme ile uyumlu olduğu gözlendi. Sonuç olarak, böbrek nakil hastalarında idrar veya kanda BKV DNA yükleri ile eş zamanlı olarak, BKV spesifik immün yanıtın ELISPOT yöntemi kullanılarak izlenmesinin, BKV reaktivasyonunun prognozu ile ilgili ön bilgi verebileceği böylece BKVN gelişiminin önlenebileceği ve tedavi sırasında immün yanıtta oluşan değişikliklerin değerlendirilebileceği düşünülmektedir.Anahtar sözcükler: BKV, Böbrek Nakli, Hücresel İmmünite, ELISPOT. MEASURING OF BKV SPECIFIC IMMUNE RESPONSE BY ELISPOT METHOD IN RENAL TRANSPLANT PATIENTSBKV is one of the most frequent viral agents causing irreversible allograft failure in kidney translant patients. The seroprevalence of BKV reaches up to 90% in healthy population. After primary infection which is asymptomatic and occurs generally in early childhood, BKV remains latent in renal and urothelial cells. In 10-40% of immunocompetent individuals, reactivation and asymptomatic viruria can be seen. In renal transplant patients, BKV can cause self limited BKV reactivation or BK virus nephritis. After renal transplantation, BKV nephritis occurs in 1-10% of patients and leads to graft loss in 50-90% of them. In our study, after blood samples from 31 cases who had renal transplantation in Prof. Dr. Tuncer Karpuzoğlu Organ Nakli Enstitüsü were collected before transplantation and +1, +3, +6 months following transplantation, peripheral blood mononuclear cells (PBMC) were isolated and cryopreserved. In PBMC, BKV specific T cell frequency was analyzed bu using ELISPOT method. Plazma or urine viral loads of patients were measured by real time PCR. A patient who developed reactivation 7 months after transplantation was included in the study and BKV specific T cell responses were measured 4 times in total after reactivation. All the samples from patients included in the study had detectable levels of BKV specific T cell response. Mean spot numbers obtained from the patients prior to transplantation were not significantly different from the mean spot numbers of the control group. When BKV specific immune responses of patiens were compared, it was found that immune response was lowest in the first month in which immune suppression was highest. No difference was observed in the pretransplantation spot numbers between the the patients who developed reactivation and who did not have reactivation during the monitorization. Eight patients developed reactivation during the monitorization. In the two patients who had reactivation, with 2 and 3 BKV DNA results each, it was observed that BKV specific T cell immunity decreased during reactivation and increase in the immune response was correlated with the decrease or clearance of BKV viral load. In conclusion, it is thought that monitorization of BKV specific immune response by using ELISPOT method with plasma or urine BKV DNA viral loads in renal transplant patients can give us predictive information about prognosis of BKV reactivation, hence leading to prevention of BKVN development and evaluation of changes in immune responses during therapy. Key words: BKV, Renal Transplantation, Cellular Immunity, ELISPOT. 97
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- 2014
15. Monitoring of Cytomegalovirus-Specific CD4+ and CD8+ T Cell Responses by Cytokine Flow Cytometry in Renal Transplant Recipients
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KILINÇKAYA DOĞAN, Hafize, primary, MUTLU, Esvet, additional, KÖKSOY, Sadi, additional, YILMAZ, Vural T., additional, KOÇAK, Hüseyin, additional, ÇOLAK, Dilek, additional, MUTLU, Derya, additional, GÜNSEREN, Filiz, additional, DİNÇKAN, Ayhan, additional, ALİOSMANOĞLU, İbrahim, additional, SÜLEYMANLAR, Gültekin, additional, and GÜLTEKİN, Meral, additional
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- 2016
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16. Successful Granulocyte Colony-stimulating Factor Treatment of Relapsing Candida albicans Meningoencephalitis Caused by CARD9 Deficiency
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Celmeli, Fatih, primary, Oztoprak, Nefise, additional, Turkkahraman, Doga, additional, Seyman, Derya, additional, Mutlu, Esvet, additional, Frede, Natalie, additional, Köksoy, Sadi, additional, and Grimbacher, Bodo, additional
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- 2016
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17. Confirmation of anti-DFS70 antibodies is needed in routine clinical samples with DFS staining pattern
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Mutlu, Esvet, primary, Eyigör, Mete, additional, Mutlu, Derya, additional, and Gültekin, Meral, additional
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- 2016
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18. Data Analysis in Flow Cytometry
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MUTLU, Esvet, primary and GÜLTEKİN, Meral, additional
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- 2016
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19. Quantitative analysis of BKV-specific CD4+ T cells before and after kidney transplantation
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Mutlu, Esvet, primary, Köksoy, Sadi, additional, Mutlu, Derya, additional, Yılmaz, Vural T., additional, Koçak, Hüseyin, additional, Dinçkan, Ayhan, additional, Süleymanlar, Gültekin, additional, and Gültekin, Meral, additional
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- 2015
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20. Klinik örneklerden soyutlanan anaerop bakterilerde beta-laktamaz aktivitesi ve antibiyotik direncinin belirlenmesi
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Mutlu, Esvet, Yücesoy, Mine, and Mikrobiyoloji ve Klinik Mikrobiyoloji Ana Bilim Dalı
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Mikrobiyoloji ,Microbiology - Abstract
1. ÖZET Klinik Örneklerden Soyutlanan Ânaerop Bakterilerde p-Iaktamaz Aktivitesî ve Antibiyotik Direncinin Belirlenmesi Anaerop bakterilerde identifikasyon ve duyarlılık sonuçları tedavi başladıktan günler sonra sonuçlandığından, sağaltıma genellikle ampirik olarak başlanmaktadır. Bu sebeple, klinik laboratuvarlarda anaeropların antibiyotik duyarlılıkları rutin olarak yapılmadığından, referans merkezleri tarafından belirli aralıklarla yapılan testlerle antibiyotik direnç paternlerini izlemek önemlidir. Çalışmamızda klinik örneklerden soyutlanan 27 anaerop bakterinin gram reaksiyonu, koloni morfolojisi ile Vitek cihazı ve `An-iden t diskleri ile identifikasyonları yapılmıştır. Bunun yanında tüm suşların amoksisilin klavulanat, siprofloksasin, sefoksitin, imipenem, klindamisin ve metronidazole duyarlılıkları referans yöntem olan agar dilüsyon ve E test ile belirlenmiştir. NCCLS standartları doğrultusunda çalışılan agar dilüsyon sonuçları ile üretici firma önerilerine göre uygulanan E test sonuçları karşılaştırmıştır. İki yöntemde de besiyeri olarak K vitamini ve hemin eklenmiş Brucella agar kullanılmıştır. Ayrıca suşların (3-laktamaz aktiviteleri de nitrosefin çubukları kullanılarak araştırılmıştır, vitek otomatizasyon sistemi ile suşların altısı B. uniformis, üçü B. fragilis, ikisi B. ureolyticus, ikisi S. ovatus, biri B. vulgatus, biri B. eggerthîi, biri Ö. caccae, ikisi P. melaninogenica, biri P. buccae, biri P. oris, ikisi C. perfringens, ikisi C. tertium, ikisi C. sporogenes ve biri P. anaerobius olarak tanımlanmıştır. Vitek sistemi ile tüm suşlarda %85.7, Bacteroides türlerinde %93.8 tutarlılığa sahip `An-idenf disklerinin, Bacteroides türlerini tanımlamada yüksek oranda başarılı olduğu saptanmıştır. Hastanemizde soyutlanan suşlar genel olarak metronidazol, imipenem, amoksisilin klavulanat, sefoksitin, klindamisin ve siprofloksasine sırası ile %100, %96.3, %88.9, %81.5, %81.5, %48.1 oranlarında duyarlı bulunmuştur. Anaerop izolatların duyarlılıkları göz önüne alındığında, her iki yöntem arasındaki tutarlılık IVİİK değerleri ±2 dilüsyon sınırları içinde ele alındığında %88.6, kategoriler ele alındığında ise %95.8 olarak belirlenmiştir.Sonuç olarak anaerop bakterilerin tanımlanmasında özellikle kısıtlı olanakların bulunduğu laboratuvarlarda `An-idenf disklerin kullanılabileceğini düşünmekteyiz. Hastanemiz açısından izolatların sonuçları değerlendirildiğinde metronidazol ve imipenemin en etkin ilaçlar oldukları saptanmıştır. Bunların yanında bulgularımız doğrultusunda anaerop bakterilerin antibiyotik duyarlılıklarının rutin olarak araştırılmasında, referans yöntem ile uyumlu sonuçlar veren E test yönteminin uygun, pratik ve güvenilir bir yöntem olduğunu söyleyebiliriz. Anahtar kelimeler: Anaerop bakteriler, Antibiyotik duyarlılığı, p-laktamaz, E test, agar dilüsyon 2. SUMMARY Determination of p-lactamase Activity and Antibiotic Resistance Rates in Anaerobic Bacteria Isolated From Clinical Specimens In general empiric therapy is used in anaerobic infections, because precise identifications and susceptibility results of anaerobic bacteria are usually generated days after therapy has been initiated. Because antibiotic susceptibility testing of anaerobes is not generally routinely performed in clinical laboratories, periodic monitoring of resistance patterns in reference laboratories is esentially important. In our study, we identified 27 anaerobic bacteria which were isolated from clinical specimens with gram reaction, colony morphology, `An-idenf disks and Vitek system. Susceptibilities of all our isolates to amoxicillin/clavulanate, ciprofloxacin, cefoxitin, imipenem, clindamycin and metronidazole were also determined by reference agar dilution and E test methods. Results obtained by agar dilution method which was performed as recommended by NCCLS were compared with results of E test, performed according to the manufacturer's instructions. In both methods Brucella agar supplemented with vitamin K and hemin was used as media. Then we tested B-lactamase production of our isolates by using nitrocefin sticks. Vitek system identified 6 of isolates as B. uniformis, 3 as B. fragilis, 2 as B. ureolyticus, 2 as B. ovatus, 1 as B. vulgatus, 1 as B. eggerthii, 1 as B. caccae, 2 as P. melaninogenica, 1 as P. buccae, 1 as P. oris, 2 as C. perfringens, 2 as C. tertium, 2 as C. sporogenes and 1 as P. anaerobius. It was clear that `An-idenf disks were highly successful for identification of Bacteroides species with an agreement rate of 93.75%. `An-idenf disk results agreed with Vitek findings with a rate of 85.7% for all species. Susceptibility rates of anaerobic bacteria isolated from our hospital to metronidazole, imipenem, amoxicillin/clavulanate, cefoxitin, clindamycin and ciprofloxacin were 100%, 96.3%, 88.9%, 81.5%, 81.5%, 48.1%, respectively. The agreement of MICs by both methods was found to be 88.6% within two-fold dilutions while categorical agreement was 95.8%.As a result, we conclude that `An-idenf disks are useful for identification of anaerobic bacteria especially in small laboratories. According to the susceptibility rates of our isolates, metronidazole and imipenem were found to be the most active agents. According to our findings, we can say that suitable, practical and reliable E test, which gives consistent results with the reference test, may be an alternative method for routine susceptibility testing of anaerobic bacteria. Key words: Anaerobic bacteria, antibiotic susceptibility, p-lactarnase, E test, agar dilution 69
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- 2002
21. Candida albicans suşlarının fluconazole duyarlılığının disk difüzyon yöntemi ile saptanması
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Yücesoy, Mine, Güldaş, Nevcivan, Mutlu, Esvet, and Yuluğ, Nuran
- Published
- 2000
22. BK Virus Infections in Pediatric Kidney Transplant Recipients
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MUTLU, Derya, primary, SAĞLIK, İmran, additional, KOYUN, Mustafa, additional, ÇOMAK, Elif, additional, MUTLU, Esvet, additional, USLU GÖKÇEOĞLU, Arife, additional, ÇAĞLA DOĞAN, Serpil, additional, DİNÇKAN, Ayhan, additional, AKBAŞ, Sakine Halide, additional, AKKAYA, Bahar, additional, AKMAN, Sema, additional, SÜLEYMANLAR, Gültekin, additional, and ÇOLAK, Dilek, additional
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- 2013
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23. Böbrek Nakil Hastalarında Sitomegalovirusa Özgül CD4+ ve CD8+ T Hücre Yanıtının Sitokin Akım Sitometri Yöntemiyle İzlemi.
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KILINÇKAYA DOĞAN, Hafize, MUTLU, Esvet, KÖKSOY, Sadi, YILMAZ, Vural T., KOÇAK, Hüseyin, ÇOLAK, Dilek, MUTLU, Derya, GÜNSEREN, Filiz, DİNÇKAN, Ayhan, ALİOSMANOĞLU, İbrahim, SÜLEYMANLAR, Gültekin, and GÜLTEKİN, Meral
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- 2016
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24. Quantitative analysis of BKV-specific CD4 + T cells before and after kidney transplantation.
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Mutlu, Esvet, Köksoy, Sadi, Mutlu, Derya, Yılmaz, Vural T., Koçak, Hüseyin, Dinçkan, Ayhan, Süleymanlar, Gültekin, and Gültekin, Meral
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- *
KIDNEY transplant complications , *BK virus diseases , *T cells , *CD4 antigen , *IMMUNE response , *PATIENT monitoring - Abstract
Background BK virus (BKV) is the main infectious cause of renal allograft dysfunction. Although recent studies showed an inverse correlation between BKV-specific T-cell responses and viral load after transplantation, the importance of pre-transplant response in the process of virus reactivation has only been studied once. In this study, we aimed to determine whether pre-transplant CD4 + T-cell response can be used for prediction of BKV reactivation and BKV nephropathy (BKVN), by a method that can practically be used in routine patient monitoring. Methods BKV-specific CD4 + T-cell responses of 31 kidney recipients (all from live donors) were measured by an IFN-γ-enzyme-linked-immunospot (ELISPOT) method using mixture of peptides, at day 0 and + 1, + 3, and + 6 months posttransplant. Additionally, seven other reactivation patients as another group were also analyzed. BKV viral loads in plasma were measured by real-time polymerase chain reaction (PCR). Responses of 10 healthy people were also included as controls in the analysis. Results All but one patient and all of the controls had detectable CD4 + T-cell responses. Reactivation occurred in 8 out of 31 patients. There was no significant association between pretransplant BKV-specific CD4 + T-cell responses and BKV reactivation and between BKV DNA levels and CD4 + T-cell responses. In the additional group consisting of reactivation patients, four patients who had BKVN showed negative correlation between BKV-DNA levels and BKV-specific CD4 + T-cell responses (p < 0.05). One patient who developed BKVN, however, was not able to mount a similar CD4 + T-cell response to viral reactivation despite immunosuppressive reduction. Conclusion Even though our cohort is small, our results may suggest that pre-transplant measurement of BKV specific CD4 + T-cell response may not be necessary, and that post-transplant monitoring, particularly during reactivation, may be more helpful in the management of the infection. [ABSTRACT FROM AUTHOR]
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- 2015
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25. Successful Granulocyte Colony-stimulating Factor Treatment of Relapsing Candida albicansMeningoencephalitis Caused by CARD9 Deficiency
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Celmeli, Fatih, Oztoprak, Nefise, Turkkahraman, Doga, Seyman, Derya, Mutlu, Esvet, Frede, Natalie, Köksoy, Sadi, and Grimbacher, Bodo
- Abstract
Caspase-associated recruitment domain-9 (CARD9) deficiency is an autosomal-recessive primary immunodeficiency with genetic defects in Th17 immunity marked by susceptibility to recurrent and invasive Candidainfections. We present a case of relapsing Candida albicansmeningoencephalitis over 1-year period despite appropriate antifungal therapy. We detected a homozygous p.Q295X mutation in CARD9as well as a defective interleukin-17 and interferon gamma synthesis in Enzyme-Linked ImmunoSpot tests. We achieved complete clinical remission, and improvement of interleukin-17 secretion with subcutaneous granulocyte colony-stimulating factor) treatment.
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- 2016
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26. Pediatrik Renal Transplant Alıcılarında BK Virus Enfeksiyonları.
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MUTLU, Derya, SAĞLIK, Imran, KOYUN, Mustafa, ÇOMAK, Elif, MUTLU, Esvet, USLU GÖKÇEOĞLU, Arife, ÇAĞLA DOĞAN, Serpil, DİNÇKAN, Ayhan, AKBAŞ, Sakine Halide, AKKAYA, Bahar, AKMAN, Sema, SÜLEYMANLAR, Gültekin, and ÇOLAK, Dilek
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- 2013
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27. Diagnostic Value of Serological Markers in Discriminating Ulcerative Colitis and Crohn's Disease
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BAKIRTAŞ, Mehmet, TAZEGÜL, Gökhan, MUTLU, Esvet, GÜLTEKİN, Meral, and YILDIRIM, Bülent
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Ulcerative Colitis,Crohn's Disease,Inflammatory bowel diseases,Autoantibodies,Differential diagnosis ,Ülseratif kolit,Crohn Hastalığı,İnflamatuar bağırsak hastalıkları,Otoantikorlar,Ayırıcı tanı - Abstract
Objective: The role of noninvasive serological markers is increasing in the diagnosis of inflammatory bowel diseases IBD . In this study, we aimed to evaluate the use of four different autoantibodies in the differential diagnosis in patients diagnosed with ulcerative colitis UC and Crohn's Disease CD .Material and Methods: 122 patients with IBD were included in the study. Seventy patients 57.3% were diagnosed with UC and 52 42.7% were diagnosed with CD. Demographic and clinical data were recorded; anti-neutrophil cytoplasmic antibody ANCA , anti-intestinal goblet antibody AIGA , anti Saccharomyces cerevisiae antibody, ASCA and anti-exocrine pancreatic antibody AEPA were studied using immunofluorescence. Data were analyzed with the SPSS 17.0 program.Results: ANCA, ASCA and AEPA antibodies had high specificities 96.1%, 94.2% and 98.5%, respectively . The highest test accuracy was seen in ASCA with 73.7%, and the lowest test accuracy was seen in ANCA with 55.7%. In addition, ANCA-positive UC patients had experienced more attacks than ANCA-negative patients ANCA-positive 7.61±3.3 attacks, ANCA-negative 4.98 ± 3.3 attacks ; similarly, ASCA positive CD patients also had more attacks than ASCA negatives ASCA positive 5.04±3.5 attacks, ASCA negative 3.3±1.9 attacks .Conclusion: ANCA, ASCA and AEPA have high specificity and positive predictive values in the differential diagnosis of UC and CD. However, their clinical use is limited due to the low positivity rates of antibodies in patient populations. The positivity of ANCA and ASCA antibodies has also been associated with the number of UC and CH attacks, and may have prognostic significance for the course of severe disease, Amaç: İnflamatuvar bağırsak hastalıklarının İBH tanısında noninvazif serolojik belirteçlerin rolü artmaktadır. Bu çalışmada, ülseratif kolit ÜK ve Crohn Hastalığı CH hastalığı tanılı hastalarda dört farklı otoantikorun ayırıcı tanıda kullanımının değerlendirilmesi amaçlanmıştır.Gereç ve Yöntemler: Çalışmaya 122 İBH tanılı hasta dahil edildi. Hastaların 70’i %57,3 ÜK, 52’si %42,7 CH tanılıydı. Hastaların demografik ve klinik verileri kaydedildi, anti nötrofil sitoplazmik antikor ANCA , anti-intestinal goblet antikoru AİGA , anti Saccharomyces cerevisiae antikoru ASCA ve anti-ekzokrin pankreatik antikoru AEPA immünflöresans yöntemi ile çalışıldı ve değerlendirildi. Veriler SPSS 17.0 programı ile analiz edildi. Bulgular: ANCA, ASCA ve AEPA antikorları ayırıcı tanıda yüksek özgüllüğe sırası ile %96,1, %94,2 ve %98,5 sahiptir. En yüksek test doğruluğu %73,7 ile ASCA’da izlenmekte olup, en düşük test doğruluğu %55,7 ile ANCA’da izlenmiştir. Ayrıca, ANCA pozitif ÜK hastalarının, ANCA negatif hastalardan ANCA pozitif 7,61±3,3 atak, ANCA negatif 4,98±3,3 atak ; ASCA pozitif CH hastaların da ASCA negatiflere oranla daha fazla sayıda atak geçirdiği ASCA pozitif 5,04±3,5 atak, ASCA negatif 3,3±1,9 atak izlenmektedir. Sonuç: ÜK ve CH ayırıcı tanısında ANCA, ASCA ve AEPA yüksek özgüllük ve pozitif prediktif değerlere sahiptir. Ancak, antikorların hasta popülasyonlarında pozitiflik oranlarının düşük olması nedeniyle klinik kullanımları kısıtlıdır. ANCA ve ASCA antikorlarının pozitifliği aynı zamanda ÜK ve CH atak sayısı ile ilişkili bulunmuş olup, şiddetli hastalık seyri hakkında prognostik öneme sahip olabilir
28. Klinik örneklerde dfs paterninin ve anti-dfs70 antikorunun araştırılması
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Onarer, Pelin, Mutlu, Esvet, and Tıbbi Mikrobiyoloji Anabilim Dalı
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Mikrobiyoloji ,Autoimmune diseases ,Microbiology ,Autoantibodies - Abstract
Klinik Örneklerde DFS Paterninin ve Anti-DFS70 Antikorunun AraştırılmasıANA sistemik otoimmün romatizmal hastalıklar için (SARD) tanı, takip ve prognozda yol göstericidir. ANA tanımlanmasında IIF yöntemi altın standart yöntem olup, tarama amaçlı kullanılmaktadır. Hücrenin hangi yapısına karşı antikor oluştuğu ise doğrulama testleri ile belirlenmektedir. DFS paterni de dahil olmak üzere ANA'nın duyarlı bir tarama testi sonrası yüksek özgüllüğe sahip bir doğrulama testi ile doğrulanması önerilmektedir. Bu yaklaşıma refleks test yöntemi adı verilmektedir. Anti-DFS70 antikor varlığında doğrulamada sıklıkla ELISA, LIA gibi yöntemler kullanılmakla birlikte, son yıllarda hem DFS paterninin tanınmasındaki zorlukların önüne geçmek için hem de doğrulamanın tek basamakta yapılabilmesi için yeni IIF yöntemleri geliştirilmeye çalışılmıştır.Biz bu çalışmada ortada HEp-2 hücresi, yanında bulunan DFS70 antijeni içeren Dotların bir araya getirilmesiyle oluşan CytoBead (Generic Assays, Germany) yöntemini, rutin iki basamaklı test stratejisi ile karşılaştırdık. Çalışmamızda rutin uygulamada ANA IIF testinde yoğun ince benekli çıkan örnekler, doğrulama yöntemi olarak LIA testi ile çalışılmıştır. IIF ve LIA sonuçlarına göre dört gruba ayrılan 479 örnek, CytoBead IIF yöntemi ile, bunların arasından seçilen 264 örnek ELISA testi ile çalışılmıştır.IIF yöntemi ile DFS paterni saptanan 329 örneğin sadece %54.4'ü CytoBead HEp-2 testi ile pozitif saptanmıştır. IIF (+) LIA (+) ELISA (+) olan 106 örnekte CytoBead HEp-2+Dot testi 105'ini (%99.1) pozitif olarak bularak oldukça yüksek bir oran vermiştir. Sonuç olarak, CytoBead IIF yöntemi ile hem yoğun ince benekli patern tanımlanabilmekte, hem de tarama ve doğrulama tek basamakta yapılabilmektedir. Böylelikle daha maliyet etkin bir yaklaşım sunmaktadır. CytoBead HEp-2 hücre substratının geliştirilmesi ile yakın bir gelecekte rutin tanıda yerini alabileceği düşünülmektedir. Anahtar Sözcükler: Anti-DFS70, AARD, CytoBead Investigation of DFS Pattern and Anti-DFS70 Antibody in Clinical SamplesANA is a guide in the diagnosis, follow-up and prognosis of systemic autoimmune rheumatic diseases (SARD). The IIF method is the gold standard method for the identification of ANA and is used for screening purposes. The nature of the antibody against the cell is determined by confirmatory tests.It is recommended that the ANA, including the DFS pattern, should be verified with a highly specific confirmatory test after a sensitive screening test. This approach is called reflex test method. Although methods such as ELISA and LIA are often used to confirm the presence of anti-DFS70 antibodies, new IIF methods have been developed in recent years in order to prevent the difficulties in the recognition of the DFS pattern and to carry out the confirmatory test in a single step. In this study, we compared the CytoBead (Generic Assays, Germany) method with the HEp-2 cell and the Dot with DFS70 antigen, to the routine two-step test strategy. In our study, the samples which were DFS pattern in ANA IIF test in routine practice were studied with LIA test as a confirmatory method. Four hundred seventy nine samples were divided into four groups according to the results of IIF and LIA. They were studied by CytoBead IIF method and 264 among them were studied by ELISA.Only 54.4% of 329 samples with DFS pattern determined by IIF method were found positive by CytoBead HEp-2 test. In 106 samples with IIF (+) LIA (+) ELISA (+), CytoBead HEp-2 + Dot test found 105 (99.1%) positive and gave a very high ratio.Conclusively, both the scanning of DFS pattern the and verification of anti-DFS70 antibody and can be done in one step With the CytoBead IIF method. Thus, it offers a more cost-effective approach. With the development of CytoBead HEp-2 cell substrate it is thought that it will be able to take its place in routine diagnosis in the near future.Key Words: Anti-DFS70, AARD, CytoBead 100
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- 2019
29. Relationship of HLA-B alleles on susceptibility to and protection from HIV infection in Turkish population.
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Darbas S, Inan D, Kilinc Y, Arslan HS, Ucar F, Boylubay O, Koksoy S, Mutlu E, Yucel B, and Ekinci NS
- Abstract
Objective: Many human leukocyte antigen (HLA)-B alleles are associated with an increased risk of Acquired Immune Deficiency Syndrome (AIDS) and Human Immunodeficiency Virus (HIV) progression; however, their distribution varies among different racial/ethnic groups. Abacavir used in the treatment of AIDS significantly increases the risk of hypersensitivity reactions in patients with HLA-B*57:01. The aim of this study was to determine the distribution of HIV-associated HLA-B subgroups (high and low resolution) and HLA-B*57:01 associated with Abacavir sensitivity in Turkiye., Methods: This retrospective case-control study consisted of 416 (F/M:111/305) HIV positive patients and 416 (F/M:111/305) healthy controls. HLA-B alleles were identified using Luminex based low-resolution method and further subgrouped by sequence-based high-resolution typing., Results: Our data showed that in patients with HIV-1 infection, HLA-B*15, *35, and *51 allele frequencies were higher, while the HLA-B*07, *14 and *55 allele frequencies were lower as compared to the controls. It was determined that HLA-B*15:01, *35:01, *35:08, and *51:01 alleles frequencies were higher in the patients with HIV-1 infection compared to the controls as HLA-B*07:02, *14:01, *44:01, and *55:01 allele frequencies were detected low. HLA-B*57:01 allele positivity, which is important in Abacavir hypersensitivity, was lower than controls, and this difference was not statistically significant., Conclusion: Our results suggest that, HLA-B*07, *14, and *55 alleles and HLA-B*07:02, *14:01, *44:01, and *55:01 subgroups might have a protective effect, while HLA-B*15, *35, and *51 alleles and HLA-B*15:01, *35:01, *35:08, and *51:01 subgroups might play a role in susceptibility to HIV-1 infection., Competing Interests: No conflict of interest was declared by the authors., (© Copyright 2023 by Istanbul Provincial Directorate of Health.)
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- 2022
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30. [Monitoring of cytomegalovirus-specific CD4+ and CD8+ T cell responses by cytokine flow cytometry in renal transplant recipients].
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Kılınçkaya Doğan H, Mutlu E, Köksoy S, Yılmaz VT, Koçak H, Çolak D, Mutlu D, Günseren F, Dinçkan A, Aliosmanoğlu İ, Süleymanlar G, and Gültekin M
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- Adolescent, Adult, Aged, Antiviral Agents classification, Antiviral Agents therapeutic use, CD4 Lymphocyte Count, Case-Control Studies, Cytomegalovirus genetics, Cytomegalovirus Infections epidemiology, DNA, Viral analysis, Female, Flow Cytometry, Humans, Immunity, Cellular, Immunosuppression Therapy methods, Interferon-gamma metabolism, Male, Middle Aged, Viral Load, Young Adult, CD4-Positive T-Lymphocytes cytology, CD8-Positive T-Lymphocytes cytology, Cytomegalovirus immunology, Cytomegalovirus Infections immunology, Kidney Transplantation
- Abstract
In spite of the improvements in the clinical management of solid organ transplant (SOT) recipients provided by immunosuppresion and universal prophylaxis, human cytomegalovirus (CMV) infections continue to be one of the most leading causes of morbidity and mortality. Cell-mediated immunity specific to CMV (CMV-CMI) plays an important role in the control of CMV replication. Therefore, monitoring of CMV-specific T-cell response can be used to predict individuals at increased risk of CMV disease. The aim of this study was to investigate the levels of CMV-specific interferon (IFN)-γ producing CD4(+) and CD8(+) T cells in kidney transplant recipients before and after the transplantation, by cytokine flow cytometry. A total of 21 kidney transplant recipients (14 male, 7 female; age range: 18-66 years, mean age: 34.5 ± 9.9) who were all CMV seropositive have been evaluated in the study. Blood samples from the patients were obtained before and at the 1(st), 3(rd) and 6(th) months after transplantation. CMV seropositive healthy kidney donors (n= 20) constituted the control group. The main stages of our procedure were as follows; isolation of peripheral blood mononuclear cells from whole blood, freezing and storing of the samples, later on thawing the samples, ex vivo stimulation of lymphocytes with pooled CMV peptides and counting CMV-specific IFN- producing CD4(+) and CD8(+) T cells by flow cytometry following surface and intracellular cytokine staining. Monitoring of the viral load (CMV-DNA) was performed in 10 days intervals in the first 3 months followed by 3 week intervals until 6 months using COBAS AmpliPrep/COBAS TaqMan CMV test system (Roche Diagnostics, USA). The frequencies of pretransplant CMV-specific IFN-γ producing CD8(+) T cells in patient (3.53 ± 4.35/µl) and control (4.52 ± 5.17/µl) groups were not statistically different (p= 0.266). The difference between the number of virus-specific CD4(+) T cells in patients (8.84 ± 9.56/µl) and those in the control group (8.23 ± 11.98/µl) was at the borderline of significance (p= 0.057). The age and gender of the patients and type of antiviral prophylaxis protocols [valgancyclovir (n= 4); valacyclovir (n= 17)] did not have any significant effect on CMV-CMI (p> 0.05). Similarly, induction therapy administered to four patients did not show any effect on CMV-CMI (p> 0.05). CMV-specific immune responses of patients who received different immunosuppression protocols [tacrolimus + mycophenolate mofetil (MMF) + steroid (n= 17); cyclosporine + MMF + steroid (n= 2); mTOR inhibitor + MMF + steroid (n= 2)] were not different (p> 0.05). The number of CMV-specific CD4(+) T cells in all patients were significantly decreased in the 3rd month compared to the 1st month after the transplantation (p=0.003), indicating a relationship with the period of immunosuppressive therapy. In one of the patients who did not have CMV-specific CD4+ T-cell response but had cytotoxic T-cells (CD8(+) T= 0.6%) before transplantation, CD4(+) T-cell response have developed during monitorization (1.4%, 1.5% and 0.5% in 1st, 3rd and 6th months, respectively), and no viral reactivation was detected. Out of the two patients who had no CD4(+) and CD8(+) T cell response in the 3rd month, one of them developed low level viremia (150 copies/ml) in the 6th month. In this patient the level of CMV-CMI in the 6th month (CD4(+)T + CD8(+)T= 0.9%), have reached higher values than the values obtained before the transplantation (CD4(+) T + CD8(+) T= 0.5%). The viremia was cleared spontaneously in this patient and no antiviral therapy was required. In conclusion, our results suggested that pretransplant and posttransplant monitoring of CMV-specific T-cell responses might be helpful as well as viral load in the clinical management of CMV infection in SOT patients.
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- 2016
31. Confirmation of anti-DFS70 antibodies is needed in routine clinical samples with DFS staining pattern.
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Mutlu E, Eyigör M, Mutlu D, and Gültekin M
- Abstract
Background: Recognition of nuclear dense fine speckled (DFS) pattern by indirect immunofluorescence (IIF) is not easy. Thus, confirming the presence of these antibodies might be needed. In this study, we aimed to determine the frequency of DFS pattern in our diagnostic laboratory and to investigate the presence of anti-DFS70 antibodies in samples showing DFS pattern by two commercially available research kits retrospectively., Material and Methods: Seventy-four sequential serum samples with DFS pattern on HEp2010 cell substrates by IIF were included in this study. The semiquantitative DFS70 ELISA Kit (MBL International Corporation, Woburn, UK) was used for detection of anti-DFS70 antibodies in these samples. Twenty selected samples were tested for the presence of anti-DFS70 antibodies using ANA Line Immunoassay (LIA) (Immco Diagnostics, New York, USA)., Results: Sixty-two (83.8%) of 74 serum samples were found positive with ELISA, when 15 U/ml was taken as a reference value. Among 18 samples that were found positive by ELISA, five were negative for anti-DFS70 antibodies by LIA, while 13 were found positive. The lowest ELISA result of the sample that was positive by LIA was found to be 45.3 U/ml. When 45.3 U/ml was considered as a reference value, 45 (60.8%) of 74 serum samples were positive by ELISA. Nineteen of 20 patients had no SARD, while one had systemic lupus erythematosus (SLE)., Conclusions: DFS pattern should be confirmed with an objective method such as ELISA, LIA, or IB. We think that confirmation tests for detection of anti-DFS70 antibodies should be included in diagnostic algorithms.
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- 2016
- Full Text
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