SÖSelin Özkan-Kotiloğlu

Selin Özkan-Kotiloğlu

*This is an algorithmically generated author record based on publicly available information.

Current Organizations / Institutes

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Previous Organizations / Institutes

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Selin Özkan-Kotiloğlu has a total of 52 co-authors. Here are the top co-authors by number of shared publications:


Latest Publications

  • Open Access

    FAAH rs324420 Polymorphism in People With Opioid and Methamphetamine Use Disorders: Psychological Associations

    by Özlem Erekli‐Arat, Meltem Tepe, Selin Özkan‐Kotiloğlu, Mustafa Danışman, Dilek Kaya‐Akyüzlü

    Purpose: The global increase in the prevalence of substance use disorders (SUD) has resulted in higher mortality rates. While heroin use has decreased or stabilized, methamphetamine use is increasing, and the combined use of opioids and methamphetamine is becoming more common. FAAH is an enzyme that hydrolyzes endocannabinoid substances and plays a role in neurobehavioral processes. The aim of this study was to investigate the effect of the FAAH rs324420 polymorphism on SUD. Method: The study included 562 individuals who used methamphetamine (MUD, n = 148), opioids (OUD, n = 114), or both methamphetamine and opioids (OMCU, n = 150), as well as 150 healthy volunteers. The FAAH rs324420 polymorphism was analyzed by PCR‐RFLP. All participants completed the Barratt Impulsiveness Scale‐11 (BIS‐11), Clinical Opiate Withdrawal Scale (COWS), Substance Craving Scale (SCS), Beck Anxiety Inventory (BAI), and Beck Depression Inventory‐II (BDI‐II). Finding: The frequencies of the variant allele (A) were 21%, 13%, 16%, and 19% in OUD, MUD, OMCU, and controls, respectively. Genotype frequencies in all four groups were in Hardy–Weinberg equilibrium ( p > 0.05). The CA genotype significantly reduced the risk of the disease compared to the reference genotype (OR = 0.578, 95% CI:0.343–0.973, adjusted p = 0.039). Craving scale score was higher in individuals who concurrently used opioids and methamphetamine (20.0; 13.0–28.0) than in those who only used opioids (18.0; 14.0–28.0) ( p = 0.009). Conclusion: This study showed that the rs324420 CA genotype of the FAAH gene may confer a protective effect against methamphetamine use disorder. Future studies with larger sample sizes and additional phenotypic traits are recommended to further explore these findings in other populations.

  • Open Access

    Metastatic and Proliferative Effects of Zinc Pyrithione on Breast Cancer and Cervical Cancer and Caspase-3 Gene Expression Levels

    by Semen Sarıgül, Zuhal Günay, Sevinç Akçay, Serap Yalcin, Selin Özkan Kotiloğlu, Bayram Furkan Coşkun

    Breast cancer and cervical cancer are among the most common malignancies affecting women worldwide, accounting for a significant burden of morbidity and mortality. Despite advancements in treatment, aggressive subtypes such as triple-negative breast cancer and metastatic cervical cancer remain challenging to manage. Zinc pyrithione (ZnPT), a compound widely known for its antimicrobial properties, has gained attention as a promising anti-cancer agent because of its capacity to trigger apoptosis and suppress cell growthThis stu. dy investigates the cytotoxic, anti-metastatic, and apoptotic effects of ZnPT on MDA-MB-231 breast cancer and HeLa cervical cancer cell lines. Cytotoxicity assays revealed IC50 values of 16.2 µM and 8.3 µM for MDA-MB-231 and HeLa cells, respectively, indicating a dose-dependent cytotoxic effect. Migration assays demonstrated significant inhibition of cell motility in both cell lines, highlighting ZnPT’s potential to suppress metastasis. Additionally, quantitative PCR was used to evaluate changes in caspase 3 gene expression, a key marker of apoptosis. Results showed an upregulation of caspase 3 in MDA-MB-231 cells and a downregulation in HeLa cells following ZnPT treatment, though these changes were not statistically significant. In silico toxicity profiling using ProTox-3.0 identified ZnPT as orally toxic (Class 3), with no predicted carcinogenic or mutagenic effects. These findings suggest that ZnPT exerts promising anti-cancer effects by reducing cell viability and motility. However, the variability in its impact on apoptotic pathways across different cancer cell lines underscores the need for further investigation. This study supports the potential repurposing of ZnPT as a therapeutic agent for aggressive breast and cervical cancers.

  • Polikistik Over Sendromlu Kadınlarda Plazma Açilli Ghrelin Düzeylerine GHRL rs696217 Gen Polimorfizminin Etkisi

    by Dilek Kaya Akyüzlü, Selin Özkan Kotiloğlu, Mukaddes Asena Yıldırım, Ceylan Bal, Gamze Gök, Raziye Desdicioğlu, Ayşe Filiz Yavuz

    ÖZAmaç: Polikistik over sendromu (PKOS), doğurganlık çağındaki kadınlar arasında sık karşılaşılan, çok faktörlü, sosyal yaşamı ileri derecede etkileyen, belirti ve bulguları bireyler arasında farklılık gösteren önemli bir halk sağlığı problemidir. Son yıllarda insülin düzeyi ve kan şekeri üzerindeki etkisi yapılan çalışmalarda gösterilen ghrelin hormonunun, PKOS etiyopatogenezinde rol oynayabileceği ileri sürülmektedir. Türk PKOS hastalarında ghrelin hormonunu kodlayan GHRL rs696217 gen polimorfizminin PKOS duyarlılığına ve plazma açilli ghrelin düzeylerine etkisinin araştırılması amaçlanmıştır.Gereç ve Yöntemler: Çalışmaya Kadın Doğum Kliniği’ne başvuran Rotterdam (2003) kriterlerine göre PKOS Fenotip I tanısı alan 51 kadın ile siklusları düzenli, klinik ve laboratuvar olarak hiperandrojenizm bulguları göstermeyen, ultrasonografik görüntülemede overleri polikistik görünümde olmayan, insülin direnci, tip 2 diyabet ve glukoz intoleransı gibi metabolik bir hastalığı olmayan 48 sağlıklı kadın dahil edilmiştir. GHRL rs696217 gen polimorfizmi PCR-RFLP, plazma açilli ghrelin düzeyleri ise ELISA yöntemiyle belirlenmiştir. Bulgular: PKOS hastalarında GHRL rs696217 G ve T alel frekansları sırasıyla %91 ve %9, karşılaştırma grubunda ise %95 ve %5 olarak hesaplanmıştır. Plazma açilli ghrelin düzeyi PKOS hastalarında 18,3 pg/ml ve karşılaştırma grubunda 18,6 pg/ml olarak ölçülmüştür. İki grup arasında alel frekansları ve plazma açilli ghrelin düzeyleri açısından istatistiksel olarak anlamlı bir farklılık gözlenmemiştir (sırasıyla p=0,739 ve p=0,923). PKOS tanılı kadınlarda GT+TT genotipli bireylerde plazma açilli ghrelin düzeyinin (25,08 pg/ml) GG genotipli bireylere (18,01 pg/ml) göre istatistiksel olarak anlamlı bir şekilde daha yüksek olduğu belirlenmiştir (p=0,026). Sonuçlar: Türk PKOS hastalarında GHRL rs696217 polimorfizmi variant aleli ile yüksek plazma açilli ghrelin düzeyi arasındaki ilişki ilk kez gösterilmiştir.

  • Chlorpyrifos causes histopathological changes and modulates vitellogenin levels in zebrafish (Danio rerio)

    by Ümran Öztürk, Selin Özkan-Koti̇lOğlu, Pınar Arslan Yüce, Aylin Sepi̇cİ Di̇nÇel, Aysel Çağlan Günal, Figen Erkoç

  • Exploring the toxicity of fluoxastrobin: a combined computational and experimental approach

    by Sibel Çelik, Selin Özkan-Kotiloğlu, Serap Yalçın-Azarkan

    Fluoxastrobin (FLUO) is a fungicide from strobilurin family used widely worldwide. The use of FLUO pesticide is on the rise and this phenomenon is accompanied by a series of concerns such as endocrine disruption. In order to determine the potential toxic effects of FLUO, cell culture, gene expression and molecular docking assays were conducted as it is crucial to determine the interaction between chemicals and nuclear receptors in order to estimate and understand the impact of the chemical. This study analyzed the quantum properties of FLUO at the molecular quantum mechanical level using Density Functional Theory (DFT) with the B3LYP/6-311 + + G(d, p) and cc-pVDZ basis sets including the HOMO-LUMO energy gap, chemical reactivity descriptors, molecular electrostatic potential (MEP) surface calculation. In order to investigate molecular characteristics, topological (AIM, RDG) and Natural Bonding Orbitals (NBO) investigations were conducted. Molecular docking studies were performed with the title compound in the active sites of the proteins selected because of their role in xenobiotic metabolism. The docking result was determined to be a significant factor in bioactivity, a finding that is corroborated by the cytotoxic analysis of the FLUO compound. Density Functional Theory (DFT) computations are used to support molecular docking analysis. Toxicity of FLUO was tested on MDA-MB-231 cells using XTT and wound healing assays. IC50 value of FLUO was determined as 6,9 µg/ml. The impact of FLUO exposure at molecular level was assessed using qRT-PCR by determining the expression levels of PPARy, AhR and PXR genes where no statistically significant change was found.


  • Top Cited Papers

    Increasing microplastics pollution: An emerging vector for potentially pathogenic bacteria in the environment

    by Ülkü Nihan Tavşanoğlu, Gülçin Akca, Tülay Pekmez, Gökben Başaran Kankılıç, Tamer Çırak, Ali Serhan Çağan, Selin Özkan Kotiloğlu, Hans-Peter Grossart


  • Open Access

    Adli Uygulamalarda Yeni Nesil Dizileme Teknolojilerinin Yeri ve Önemi

    by Tuğba Tezcan, Mukaddes Asena Yıldırım, Selin Özkan Kotiloğlu, Dilek Kaya-Akyüzlü

    Günümüzde tüm dünyada adli kimliklendirmede otozomal STR (Short Tandem Repeat; Kısa Ardışık Tekrarlar) analizi altın standart olarak kabul edilmektedir ve birçok adli vaka için STR tiplemesi yeterli ayrım gücü sağlamaktadır. Özellikle can kaybının çok olduğu, vücut bütünlüğünün bozulduğu ve DNA örneğinin az ya da karışmış veya parçalanmış olduğu felaket kurbanlarının kimliklendirilmesinde X ve Y kromozomu STR belirteçleri (X-STR ve Y-STR) ve mitokondriyal DNA analizi gibi ilave belirteçlerden de yararlanılmaktadır. Vücut sıvılarının kimliklendirilmesi, monozigotik ikizlerin ayrılması ve ölüm zamanının belirlenmesinde ise DNA metilasyon kalıpları ve miRNA analizleri gibi epigenetik değişiklikler değerlendirilmektedir. Tüm bu adli belirteçlerin yetersiz kaldığı vakalarda son yıllarda Yeni nesil dizileme (YND) teknolojilerinden de yararlanılmaktadır. YND tüm ekzom ya da tüm genomu hızlı bir şekilde dizileyen ve genom hakkında geniş çaplı bilgi edinmemizi sağlayan bir teknolojidir. Adli kimliklendirme ve vücut sıvılarını kimliklendirmenin yanı sıra adli entomolojik çalışmalar, kimerizm tespiti, soy ve fenotipik çıkarım araştırmaları da YND teknolojileri sayesinde hızlı ve güvenilir bir şekilde yapılabilmektedir. Bu derleme YND teknolojilerinin adli kimliklendirme ve diğer adli uygulamalardaki yeri ve önemine odaklanmaktadır.

  • OPRM1 rs2075572 has potential to affect plasma buprenorphine level in opioid users, but not OPRM1 rs562859

    by Dilek Kaya-Akyüzlü, Selin Özkan-Kotiloğlu, Mustafa Danışman, Ceylan Bal