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Correlation Between Plasma Ccfdna, Mtdna Changes, Ctcs, And Epithelial-Mesenchymal Transition In Breast Cancer Patients Undergoing Nact, Betül Çeli̇k, İrem Peker Eyüboğlu, Si̇nan Koca, Mustafa Ümi̇t Uğurlu, Özkan Alan, Gökçe Güllü Amuran, Tuğba Akin Telli̇, Fulden Yumuk, Mustafa Akki̇pri̇k
Correlation Between Plasma Ccfdna, Mtdna Changes, Ctcs, And Epithelial-Mesenchymal Transition In Breast Cancer Patients Undergoing Nact, Betül Çeli̇k, İrem Peker Eyüboğlu, Si̇nan Koca, Mustafa Ümi̇t Uğurlu, Özkan Alan, Gökçe Güllü Amuran, Tuğba Akin Telli̇, Fulden Yumuk, Mustafa Akki̇pri̇k
Turkish Journal of Medical Sciences
Background/aim: Breast cancer is the most prevalent cancer in women, emphasizing need for noninvasive blood biomarkers to aid in treatment selection. Previous studies have demonstrated elevated levels of plasma circulating cell-free DNA (ccfDNA) in breast cancer patients. Both ccfDNA and mitochondrial DNA (mtDNA) are fragments released into the bloodstream. In this study, we investigated effectiveness of ccfDNA and mtDNA as indicators of treatment response and explored their potential as monitoring biomarkers. Additionally, we compared these markers with circulating tumor cell (CTC) data and assessed their relationship with epithelial-mesenchymal transition (EMT).Materials and methods: Thirty-six female breast cancer patients and 21 healthy …
New Imidazolidindionedioximes And Their Pt(Ii) Complexes: Synthesis And Investigation Of Their Antitumoral Activities On Breast Cancer Cells, Emrah Karahan, Tuğba Gençoğlu Katmerli̇kaya, Emel Önal, Aydan Dağ, Ayşe Gül Gürek, Vefa Ahsen
New Imidazolidindionedioximes And Their Pt(Ii) Complexes: Synthesis And Investigation Of Their Antitumoral Activities On Breast Cancer Cells, Emrah Karahan, Tuğba Gençoğlu Katmerli̇kaya, Emel Önal, Aydan Dağ, Ayşe Gül Gürek, Vefa Ahsen
Turkish Journal of Chemistry
Breast cancer is one of the most common types of cancer worldwide and has the most lethality ratio for females among all cancers. Although current cancer therapeutics have made considerable advancements, there is still room for improvement in terms of efficacy. Many anticancer drugs have a risk of causing serious adverse effects due to their non-specific cytotoxic effects on both tumor and healthy cells. New therapeutics might have a greater ability to kill cancer cells, reduce the volume of tumors, and improve overall therapy response rates. Herein, we report the efficient synthesis and characterization of three amphi vic-dioximes and their …
Deep Learning-Based Breast Cancer Diagnosis With Multiview Of Mammography Screening To Reduce False Positive Recall Rate, Meryem Altın Karagöz, Özkan Ufuk Nalbantoğlu, Derviş Karaboğa, Bahriye Akay, Alper Baştürk, Halil Ulutabanca, Serap Doğan, Damla Coşkun, Osman Demi̇r
Deep Learning-Based Breast Cancer Diagnosis With Multiview Of Mammography Screening To Reduce False Positive Recall Rate, Meryem Altın Karagöz, Özkan Ufuk Nalbantoğlu, Derviş Karaboğa, Bahriye Akay, Alper Baştürk, Halil Ulutabanca, Serap Doğan, Damla Coşkun, Osman Demi̇r
Turkish Journal of Electrical Engineering and Computer Sciences
Breast cancer is the most prevalent and crucial cancer type that should be diagnosed early to reduce mortality. Therefore, mammography is essential for early diagnosis owing to high-resolution imaging and appropriate visualization. However, the major problem of mammography screening is the high false positive recall rate for breast cancer diagnosis. High false positive recall rates psychologically affect patients, leading to anxiety, depression, and stress. Moreover, false positive recalls increase costs and create an unnecessary expert workload. Thus, this study proposes a deep learning based breast cancer diagnosis model to reduce false positive and false negative rates. The proposed model has …
Mir-770-5p-Induced Cellular Switch To Sensitize Trastuzumab Resistant Breast Cancer Cells Targeting Her2/Egfr/Igf1r Bidirectional Crosstalk, Senem Noyan, Bala Gür Dedeoğlu
Mir-770-5p-Induced Cellular Switch To Sensitize Trastuzumab Resistant Breast Cancer Cells Targeting Her2/Egfr/Igf1r Bidirectional Crosstalk, Senem Noyan, Bala Gür Dedeoğlu
Turkish Journal of Biology
Background/aim: Studies highlighted the bidirectional crosstalk between the HER family members in breast cancer as resistance mechanism to anti-HER agents. Cross-signaling between HER2/EGFR and ER/IGF1R could play role in the development of resistance to therapeutics hence stimulating cell growth. To overcome this resistance, combined therapies targeting both pathways simultaneously have been proposed as an effective strategy. The involvement of miRNAs in resistance of targeted therapies like trastuzumab was demonstrated in recent studies. Hence the regulation of miRNAs in resistance state could reverse the cell behaviour to drugs. Previously we found that overexpression of miR-770-5p downregulated AKT and ERK expression through …
Theranostic Potential Of A Novel Aptamer Specifically Targeting Her2 In Breast Cancer Cells, Fulya Küçükcankurt, Samet Uçak, Nedret Altiok
Theranostic Potential Of A Novel Aptamer Specifically Targeting Her2 In Breast Cancer Cells, Fulya Küçükcankurt, Samet Uçak, Nedret Altiok
Turkish Journal of Biology
Background/aim: The overexpression of HER2 is correlated with poorer outcomes and therapeutic resistance in breast cancer patients. While HER2-targeted therapies have shown improvement, prognosis remains poor for HER2-positive breast cancer patients, and these treatments have limitations. Therefore, it is crucial to explore effective molecular strategies for early detection and treatment of HER2-positive breast cancers. Materials and methods: In this study, we employed the cell-SELEX method to generate a selective aptamer capable of recognizing HER2 in its native conformation within breast cancer cells, for theranostic applications. Utilizing an adherent cell-SELEX approach, we developed and explored a DNA aptamer, named HMAP7, which …
The Effect Of Parity, Breastfeeding History, And Duration On Clinical And Pathological Characteristics Of Breast Cancer Patients, Naziye Ak, Zeynep Tuz, Esra Aydin, Ferhat Ferhatoğlu, Murat Sari, Nail Paksoy, İzzet Doğan, Anıl Yildiz, Rian Di̇şçi̇, Pınar Mualla Sai̇p
The Effect Of Parity, Breastfeeding History, And Duration On Clinical And Pathological Characteristics Of Breast Cancer Patients, Naziye Ak, Zeynep Tuz, Esra Aydin, Ferhat Ferhatoğlu, Murat Sari, Nail Paksoy, İzzet Doğan, Anıl Yildiz, Rian Di̇şçi̇, Pınar Mualla Sai̇p
Turkish Journal of Medical Sciences
The study is aimed to determine the relationship between the delivery and breastfeeding history of the patients andthe clinicopathological properties of breast cancer.Materials and methods: A questionnaire was utilized for the study, which included the age of diagnosis, the number of children at thetime of diagnosis, the age of the children, and the breastfeeding period of each child.Results: The study included 828 patients. The median age at diagnosis was 47 years for parous women and 42 years for nonparouswomen (p < 0.001). The tumor size of the patients diagnosed within the breastfeeding period was significantly larger compared to theother patients. Estrogen and progesterone receptor positivity were lower in patients diagnosed during breastfeeding. Additionally, themean number of positive lymph nodes, dissected lymph nodes, and positive lymph node/dissected lymph node ratio in parous andbreastfed patients with a nonmetastatic disease were statistically significantly higher in multivariable analysis than those patients whowere nulliparous and have not breastfed.Conclusion: Breast cancer is seen at a later age in patients who are parous than those who have never given birth. Patients who areparous and have breastfed tend to present with a higher stage of the disease.
Dynamic Contrast-Enhanced Mammography And Breast Mri In The Diagnosis Of Breast Cancer And Detection Of Tumor Size, Muhammed Teki̇nhatun, Nuran Sabi̇r, Ergun Erdem, Sevda Yilmaz, Furkan Ufuk
Dynamic Contrast-Enhanced Mammography And Breast Mri In The Diagnosis Of Breast Cancer And Detection Of Tumor Size, Muhammed Teki̇nhatun, Nuran Sabi̇r, Ergun Erdem, Sevda Yilmaz, Furkan Ufuk
Turkish Journal of Medical Sciences
The aim of this study is to evaluate the performance of contrast-enhanced mammography (CEM) and dynamic breast MRI techniques for diagnosing breast lesions, assess the diagnostic accuracy of CEM’s using histopathological findings, and compare lesion size measurements obtained from both methods with pathological size.Materials and methods: This prospective study included 120 lesions, of which 70 were malignant, in 104 patients who underwent CEM and MRI within a week. Two radiologists independently evaluated the MR and CEM images in separate sessions, using the BI-RADS classification system. Additionally, the maximum sizes of lesion were measured. Diagnostic accuracy parameters and the receiver operating …
A Comparative Study Of Yolo Models And A Transformer-Based Yolov5 Model For Mass Detection In Mammograms, Damla Coşkun, Dervi̇ş Karaboğa, Alper Baştürk, Bahri̇ye Akay, Özkan Ufuk Nalbantoğlu, Serap Doğan, İshak Paçal, Meryem Altin Karagöz
A Comparative Study Of Yolo Models And A Transformer-Based Yolov5 Model For Mass Detection In Mammograms, Damla Coşkun, Dervi̇ş Karaboğa, Alper Baştürk, Bahri̇ye Akay, Özkan Ufuk Nalbantoğlu, Serap Doğan, İshak Paçal, Meryem Altin Karagöz
Turkish Journal of Electrical Engineering and Computer Sciences
Breast cancer is a prevalent form of cancer across the globe, and if it is not diagnosed at an early stage it can be life-threatening. In order to aid in its diagnosis, detection, and classification, computer-aided detection (CAD) systems are employed. You Only Look Once (YOLO)-based CAD algorithms have become very popular owing to their highly accurate results for object detection tasks in recent years. Therefore, the most popular YOLO models are implemented to compare the performance in mass detection with various experiments on the INbreast dataset. In addition, a YOLO model with an integrated Swin Transformer in its backbone …
Synthesis Of New Imine-/Amine-Bearing Imidazo[1,2-A]Pyrimidine Derivatives And Screening Of Their Cytotoxic Activity, Tuğba Güngör, Hazal Nazlican Atalay, Yakup Berkay Yilmaz, Tuğba Tümer, Mehmet Ay
Synthesis Of New Imine-/Amine-Bearing Imidazo[1,2-A]Pyrimidine Derivatives And Screening Of Their Cytotoxic Activity, Tuğba Güngör, Hazal Nazlican Atalay, Yakup Berkay Yilmaz, Tuğba Tümer, Mehmet Ay
Turkish Journal of Chemistry
Imidazo[1,2-a]pyrimidine derivatives bearing imine groups (3a-e) were successfully synthesized in moderate to good yields using microwave-assisted heating. Corresponding amine derivatives (4a-e) were also obtained by the reduction reaction of the imine derivatives (3a-e). All synthesized products were characterized by FT-IR, 1 H NMR, 13C NMR, and LC-MS spectroscopic techniques. In silico ADMET, Lipinski, and drug-likeness studies of the compounds were conducted and all were found to be suitable drug candidates. The cytotoxicity of the potential drug molecules was screened against the breast cancer cell lines MCF-7 and MDA-MB-231 and the healthy model HUVEC by the sulforhodamine B method. According to …
Synthesis Of Alnustone-Like Diarylpentanoids Via A 4 + 1 Strategy And Assessment Of Their Potential Anticancer Activity, Nesli̇han Çelebi̇oğlu, Özlem Özdemi̇r Tozlu, Hasan Türkez, Hasan Seçen
Synthesis Of Alnustone-Like Diarylpentanoids Via A 4 + 1 Strategy And Assessment Of Their Potential Anticancer Activity, Nesli̇han Çelebi̇oğlu, Özlem Özdemi̇r Tozlu, Hasan Türkez, Hasan Seçen
Turkish Journal of Chemistry
Twelve compounds with a 1,5-diaryl-1-penten-3-one structure were synthesized and their cytotoxic activities were evaluated. The 1,5-diaryl-1-penten-3-one compounds were obtained via in situ enaminations of 4-phenyl-2-butanone and 4-(4-hydroxyphenyl)-2- butanone in the presence of pyrrolidine-AcOH, followed by condensation with six different benzaldehydes. The synthesized compounds were tested for their cytotoxic activity against human glioblastoma (U87-MG), breast (MCF-7), and prostate (PC-3) cancer cell lines. Some of the novel compounds exhibited remarkable cytotoxic action, especially against MCF-7 cancer cells.
Acetone Extracts Of Berberis Vulgaris And Cornus Mas L. Induce Apoptosis In Mcf-7 Breast Cancer Cells, Burcu Uslu, Mustafa Yaman, Tuba Özdemi̇r Sanci, Mustafa Güngörmüş, Çağla Zübeyde Köprü, Fatma Esra Güneş
Acetone Extracts Of Berberis Vulgaris And Cornus Mas L. Induce Apoptosis In Mcf-7 Breast Cancer Cells, Burcu Uslu, Mustafa Yaman, Tuba Özdemi̇r Sanci, Mustafa Güngörmüş, Çağla Zübeyde Köprü, Fatma Esra Güneş
Turkish Journal of Medical Sciences
Background/aim: This study aimed to determine the proliferation and apoptotic effects of extracts from Cornus mas L. and Berberis vulgaris fruits on human breast cancer cells (MCF-7). Materials and methods: The Cornus mas L. and Berberis vulgaris fruits, which constitute the herbal material of the study, were turned into 80% acetone extract after washing. The total phenolic content in Berberis vulgaris fruit extracts was determined calorimetrically using Folin-Ciocalteu reagent. The spectrophotometric method was used to determine the total flavonoid amount of the extracts. In order to measure the antioxidant capacity of Cornus mas L. and Berberis vulgaris fruits and extracts, …
Soloxolone Methyl Induces Apoptosis And Oxidative/Er Stress In Breast Cancer Cells And Target Cancer Stem Cell Population, Eli̇f Ertürk, Oğuzhan Akgün, Yaren Yildiz, Pinar Kalkan, Oksana V. Salomatina, Nariman F. Salakhutdinov, Engi̇n Ulukaya, Ferda Ari
Soloxolone Methyl Induces Apoptosis And Oxidative/Er Stress In Breast Cancer Cells And Target Cancer Stem Cell Population, Eli̇f Ertürk, Oğuzhan Akgün, Yaren Yildiz, Pinar Kalkan, Oksana V. Salomatina, Nariman F. Salakhutdinov, Engi̇n Ulukaya, Ferda Ari
Turkish Journal of Biology
One of the most prevalent malignancies in women and one of the leading causes of cancer-related death is breast cancer. There is a need for new treatment approaches and drugs for breast cancer. Many studies show the high potential of triterpene compounds and their semisynthetic derivatives as anticancer agents due to their ability to induce apoptosis and suppress tumorigenesis. The effects of soloxolone methyl (SM), a semisynthetic derivative of 18-H-glycyrrhetinic acid, on the cytotoxicity and apoptosis of human breast cancer cell line (T-47D) and cancer stem cell (CSCs) population (mammospheres; CD44+/CD24-antigen) derived from breast cancer cells, were examined in this …
An Experimental Study: The Effect Of S. Boulardii On Abemaciclib-Induced Diarrhea, İbrahi̇m Ethem Cakcak, Yusuf Emre Ayti̇n, Sezi̇n Sayin, Ahmet Küçükarda, Ali̇ Gökyer, İvo Gökmen, Erkan Özcan, Selçuk Korkmaz, Ebru Taşteki̇n, İrfan Çi̇çi̇n
An Experimental Study: The Effect Of S. Boulardii On Abemaciclib-Induced Diarrhea, İbrahi̇m Ethem Cakcak, Yusuf Emre Ayti̇n, Sezi̇n Sayin, Ahmet Küçükarda, Ali̇ Gökyer, İvo Gökmen, Erkan Özcan, Selçuk Korkmaz, Ebru Taşteki̇n, İrfan Çi̇çi̇n
Turkish Journal of Medical Sciences
Background/aim: In our study, we aimed to investigate the protective effects of Saccharomyces boulardii on abemaciclib-induced diarrhea model, which is a commonly used drug in breast cancer. Materials and methods: Thirty rats were divided into 3 groups as control (Group 1), abemaciclib (Group 2), and abemaciclib + Saccharomyces boulardii (Group 3) groups. The clinical status, body weight, and defecation status were monitored daily. At the end of the 15-day experiment period, the rats were killed with high-dose anesthesia and the resected small intestine segments were evaluated histopathologically. Lesions were classified according to thickening of the villus, inflammation and edema of …
Lag-3 Expression In Tumor Microenvironment Of Triple-Negative Breast Cancer, Gözde Tahtaci, Nazan Günel, Aysu Sadi̇oğlu, Nalan Akyürek, Oğulcan Boz, Aytuğ Üner
Lag-3 Expression In Tumor Microenvironment Of Triple-Negative Breast Cancer, Gözde Tahtaci, Nazan Günel, Aysu Sadi̇oğlu, Nalan Akyürek, Oğulcan Boz, Aytuğ Üner
Turkish Journal of Medical Sciences
Background/aim: This study aimed to evaluate the expression of lymphocyte activation gene-3 (LAG-3) and its relationship with programmed cell death ligand-1 (PD-L1) in triple-negative breast cancer (TNBC). Materials and methods: LAG-3 and PD-L1 was evaluated in tumor-infiltrating lymphocytes (TILs) using immunohistochemistry (IHC). The chi-square test was used to estimate the associations between LAG-3, PD-L1 and clinicopathological characteristics. Correlation between LAG-3 stromal TIL (sTIL), LAG-3 intraepitelial TIL (iTIL) and PD-L1 was assessed with using the Spearman's correlation coefficient. Survival analysis was performed using the Kaplan-Meier method. Results: The percentages of LAG-3 sTIL+, LAG-3 iTIL+, PD-L1+ tumor cells and PD-L1+ inflammatory cells …
Pectoralis Muscle Index Might Be A Factor Associated With Frailty In Older Women With Breast Cancer, Muhammet Cemal Kizilarslanoğlu, M. Ali̇ Eryilmaz, Betül Çi̇ğdem Yortanli, İlknur Rahi̇me Ünal, Bariş Can Ünal, Nahi̇de Baran, Ayşegül Altunkeser, Nergi̇s Aksoy
Pectoralis Muscle Index Might Be A Factor Associated With Frailty In Older Women With Breast Cancer, Muhammet Cemal Kizilarslanoğlu, M. Ali̇ Eryilmaz, Betül Çi̇ğdem Yortanli, İlknur Rahi̇me Ünal, Bariş Can Ünal, Nahi̇de Baran, Ayşegül Altunkeser, Nergi̇s Aksoy
Turkish Journal of Medical Sciences
Background/aim: To investigate the possible relationship between pectoralis muscle (PM) measurement and frailty in older women with breast cancer (BC) (preoperatively defined as stage 1, 2, and 3 diseases). Materials and methods: This retrospective, observational study was conducted at Konya Training and Research Hospital between June and December 2020. A total of 102 patients [median age 62.5 years, median follow-up period two years] were included in the study. PM measurements were obtained from thorax computerized tomography (CT). Pectoralis muscle index (PMI) was calculated by dividing the PM area by the height square of the patients (cm2/m2). Pectoralis muscle density (PMD) …
Mir-216b-5p Promotes Late Apoptosis/Necroptosis In Trastuzumab-Resistant Sk-Br-3 Cells, İştar Burcu Dolapçi, Senem Noyan, Ayşegül Yücel Polat, Hakan Gürdal, Bala Gür Dedeoğlu
Mir-216b-5p Promotes Late Apoptosis/Necroptosis In Trastuzumab-Resistant Sk-Br-3 Cells, İştar Burcu Dolapçi, Senem Noyan, Ayşegül Yücel Polat, Hakan Gürdal, Bala Gür Dedeoğlu
Turkish Journal of Biology
Breast cancer is the most common cancer in women. The human epidermal growth factor receptor 2 (HER2) overexpressing subtype is related to poor prognosis with an aggressive phenotype and is reported as one of the most commonly seen subtypes. Trastuzumab is prevalently used as a treatment method for HER2+ breast cancer however, resistance to the drug frequently occurs following the treatment. MicroRNAs (miRNAs) are 19-23 nucleotide long small RNAs, which regulate gene expression at posttranscriptional level and studies show that there are differentially expressed miRNAs between drug sensitive and resistant groups, indicating that they might have some key roles in …
Breast Cancer-Caps: A Breast Cancer Screening System Based On Capsule Network Utilizing The Multiview Breast Thermal Infrared Images, Devanshu Tiwari, Manish Dixit, Kamlesh Gupta
Breast Cancer-Caps: A Breast Cancer Screening System Based On Capsule Network Utilizing The Multiview Breast Thermal Infrared Images, Devanshu Tiwari, Manish Dixit, Kamlesh Gupta
Turkish Journal of Electrical Engineering and Computer Sciences
This paper proposed an accurate and fully automated breast cancer early screening system called the "Breast Cancer-Caps". The capsule network is used in this approach for the cancer detection in breast utilizing the thermal infrared images for the first time. This capsule network is trained with the help of Dynamic as well as Static breast thermal images dataset consisting of left, right, frontal views along with a new multiview thermal images. These multiview breast thermal images are fabricated by concatenating the conventional left, frontal and right view breast thermal images. The other current and popular deep transfer learning models such …
The Use Of Fulvestrant Before Chemotherapy Improves Survival In Hormone-Positive Breast Cancer: A Real-Life Study, Deni̇z Can Güven, Hasan Çağri Yildirim, Enes Erul, Taha Koray Şahi̇n, İbrahi̇m Yahya Çakir, Oktay Hali̇t Aktepe, Neyran Kertmen, Ömer Di̇zdar, Sercan Aksoy
The Use Of Fulvestrant Before Chemotherapy Improves Survival In Hormone-Positive Breast Cancer: A Real-Life Study, Deni̇z Can Güven, Hasan Çağri Yildirim, Enes Erul, Taha Koray Şahi̇n, İbrahi̇m Yahya Çakir, Oktay Hali̇t Aktepe, Neyran Kertmen, Ömer Di̇zdar, Sercan Aksoy
Turkish Journal of Medical Sciences
Background/aim: We aimed to evaluate the efficacy of fulvestrant and its affecting clinical factors, including the optimal sequencing of fulvestrant and chemotherapy in a real-life cohort. Methods: The data of 256 metastatic hormone-positive breast cancer patients treated with fulvestrant were evaluated. The association of clinical factors with survival was analyzed with Kaplan-Meier and Cox-regression analyses. Results: The median age of patients was 57 years. More than half of the patients used fulvestrant in later lines and after chemotherapy (75.8%). The median progression-free (PFS) and overall survival (OS) of all cohort were 6.05 ± 0.56 and 29.70 ± 1.61 months, respectively. …
Circular Rna Circprmt5 Is Upregulated In Breast Cancer And Is Required For Cellproliferation And Migration, Xiaofeng Li, Dairong Zhang, Zuxi Feng, Xiangjing Xu, Jihong Zhang, Aiping Yu, Li Zhu, Jie Xiao, Junhua Du, Min Chen
Circular Rna Circprmt5 Is Upregulated In Breast Cancer And Is Required For Cellproliferation And Migration, Xiaofeng Li, Dairong Zhang, Zuxi Feng, Xiangjing Xu, Jihong Zhang, Aiping Yu, Li Zhu, Jie Xiao, Junhua Du, Min Chen
Turkish Journal of Medical Sciences
Background/aim: To evaluate the role of cyclic protein arginine methyltransferase 5 (circPRMT5) in the occurrence and development of breast cancer (BC). Materials and methods: A total of 90 BC patients who underwent radical mastectomy and 40 age-matched healthy female controls were recruited in the Second People's Hospital of China Three Gorges University, Yichang Second People's Hospital from 2017 to 2020. Quantitative reverse transcription polymerase chain reaction (RT-qPCR) was used to detect the expression levels of circPRMT5 in BC tissues, serum, normal breast cell line (MCF-10A), and BC cell line (T47D, MCF-7, BT549, Hs-578T, and MDA-MB-231, MDAMB-468). The associations between circPRMT5 …
The Comparison Of Differentially Expressed Micrornas In Bag-1 Deficient And Wild Type Mcf-7 Breast Cancer Cells By Small Rna Sequencing, Peli̇n Özfi̇li̇z Kilbaş, Gi̇zem Alkurt, Pinar Obakan Yerli̇kaya, Ajda Çoker Gürkan, Gi̇zem Di̇nler Doğanay, Eli̇f Damla Arisan
The Comparison Of Differentially Expressed Micrornas In Bag-1 Deficient And Wild Type Mcf-7 Breast Cancer Cells By Small Rna Sequencing, Peli̇n Özfi̇li̇z Kilbaş, Gi̇zem Alkurt, Pinar Obakan Yerli̇kaya, Ajda Çoker Gürkan, Gi̇zem Di̇nler Doğanay, Eli̇f Damla Arisan
Turkish Journal of Biology
The multifunctional BAG-1 (Bcl-2 athanogene-1) protein promotes breast cancer survival through direct or indirect interaction partners. The number of the interacting partners determines its cellular role in different conditions. As well as interaction partner variability, the amount of BAG-1 protein in the cells could cause dramatic alterations. According to previous studies, while the transient silencing of Bag-1 enhanced drug-induced apoptosis, deletion of BAG-1 could induce stemness properties and Akt-mediated actin remodeling in MCF-7 breast cancer cells. Considering the heterogeneity of breast cancer and the variability of BAG-1 -mediated cell response, it has become essential to determine microRNA (miRNA) functions in …
Predictors Of Lymphovascular Invasion In Estrogen Receptor Positive/Her-2 Negative Breast Cancer Patients Treated With Neoadjuvant Chemotherapy, Eyyüp Çavdar, Yakup İri̇ağaç
Predictors Of Lymphovascular Invasion In Estrogen Receptor Positive/Her-2 Negative Breast Cancer Patients Treated With Neoadjuvant Chemotherapy, Eyyüp Çavdar, Yakup İri̇ağaç
Turkish Journal of Medical Sciences
Background/aim: Lymphovascular invasion (LVI) is considered a high-risk factor for recurrence in early-stage breast cancer, hence examination of LVI in pathological samples is an absolute recommendation. We aim to investigate predictive factors of LVI in preneoadjuvant chemotherapy (NAC) patients with estrogen receptor positive (ER+) and human epidermal growth factor receptor 2 negative (HER2-) molecular subtypes of breast cancer. Materials and methods: One hundred and thirty-four patients treated with NAC were included in this study who were ER+/HER2-. The clinical characteristics of the patients, the data obtained from the core needle biopsy before NAC and the LVI status in the pathology …
The Validity And Clinical Utility Of Axillary Ultrasonography-Guided Fine Needle Aspiration Biopsy In Detection Of Nodal Metastasis In Early-Stage Breast Cancer Patients: A Retrospective Single-Center Experience, Fi̇li̇z Taşçi, Yavuz Meti̇n, Nurgül Orhan Meti̇n, Maksude Esra Kadioğlu, Meli̇h Gaffar Gözükara, Si̇bel Kul
The Validity And Clinical Utility Of Axillary Ultrasonography-Guided Fine Needle Aspiration Biopsy In Detection Of Nodal Metastasis In Early-Stage Breast Cancer Patients: A Retrospective Single-Center Experience, Fi̇li̇z Taşçi, Yavuz Meti̇n, Nurgül Orhan Meti̇n, Maksude Esra Kadioğlu, Meli̇h Gaffar Gözükara, Si̇bel Kul
Turkish Journal of Medical Sciences
Background/aim: Assessing the validity and clinical utility of axillary ultrasonography (AUS)-guided fine needle aspiration biopsy (FNAB) in detection of nodal metastasis during preoperative axillary investigation in comparison to the histopathologic diagnosis in early-stage breast cancer. Materials and methods: A total of 279 operated primary breast cancer patients (age: 55.3 ± 12.8, ranged 17-90 years) were included. Data on AUS findings at the time of initial diagnosis (first look AUS), second-look AUS findings performed by the breast radiologist during breast biopsy procedure and the AUS-guided FNAB findings were evaluated with respect to the final histopathology report obtained through axillary surgery via …
Metformin Promotes Apoptosis In Primary Breast Cancer Cells By Downregulation Ofcyclin D1 And Upregulation Of P53 Through An Ampk-Alpha Independent Mechanism, Güven Yenmi̇ş, Nai̇l Beşli̇, Eli̇f Yaprak Saraç, Fatma Si̇nem Hocaoğlu Emre, Kazim Şenol, Gönül Kanigür
Metformin Promotes Apoptosis In Primary Breast Cancer Cells By Downregulation Ofcyclin D1 And Upregulation Of P53 Through An Ampk-Alpha Independent Mechanism, Güven Yenmi̇ş, Nai̇l Beşli̇, Eli̇f Yaprak Saraç, Fatma Si̇nem Hocaoğlu Emre, Kazim Şenol, Gönül Kanigür
Turkish Journal of Medical Sciences
Background/aim: In the present study we aimed to figure out the effect of metformin on the expression of AMPK-alpha, cyclin D1, and Tp53, and apoptosis in primary breast cancer cells (PBCCs). Materials and methods: PBCCs were treated with two doses of metformin (0 mM, 25 mM). Proliferation was determined by BrdU assay. Real-time PCR was used to assess AMPK-alpha, cyclin D1, and Tp53 gene expressions; apoptotic indexes of PBCCs were analyzed using flow-cytometry. Results: Twenty-four-hour incubation with 25 mM metformin reduced the proliferation of PBCCs. AMPK-alpha gene expression in PBCCs was not affected by 25 mM metformin treatment compared with …
Retrospective Analysis Of The Effect Of Breast Surgery On Body Posture In Patients Withearly-Stage Breast Cancer After Cancer Treatment (Venus Study)(Breast Cancer And Body Posture), Özgür Tanriverdi̇, Ahmet Ozan Çeti̇n, Ali̇ Alkan
Retrospective Analysis Of The Effect Of Breast Surgery On Body Posture In Patients Withearly-Stage Breast Cancer After Cancer Treatment (Venus Study)(Breast Cancer And Body Posture), Özgür Tanriverdi̇, Ahmet Ozan Çeti̇n, Ali̇ Alkan
Turkish Journal of Medical Sciences
Background/aim: The aim of this study was to determine whether breast surgery changes body posture in patients with early-stage breast cancer. Materials and methods: Study variables include age, side and localization of the tumor in the breast, applied breast surgery, axillary interference, pathological tumor size, axillary lymph node metastasis, body mass index, bone density, adjuvant therapies, and histological type. Thoracic kyphosis angle due to the anatomically affected primary region to detect changes in body posture and Cobb's method were used to measure this. Results: There was a statistically significant difference in the mean Cobb's angle between the follow-up times of …
Green Biosynthesis, Characterization, And Cytotoxic Effect Of Magnetic Iron Nanoparticles Using Brassica Oleracea Var Capitata Sub Var Rubra (Red Cabbage) Aqueous Peel Extract, Ömer Erdoğan, Sali̇h Paşa, Gülen Meli̇ke Demi̇rbolat, Özge Çevi̇k
Green Biosynthesis, Characterization, And Cytotoxic Effect Of Magnetic Iron Nanoparticles Using Brassica Oleracea Var Capitata Sub Var Rubra (Red Cabbage) Aqueous Peel Extract, Ömer Erdoğan, Sali̇h Paşa, Gülen Meli̇ke Demi̇rbolat, Özge Çevi̇k
Turkish Journal of Chemistry
The green method of nanoparticle synthesis, which is an environment and living-friendly method, is an updated subject that has appeared as an alternative to conventional methods such as physical and chemical synthesis. In this presented study, the green synthesis of magnetic iron oxide nanoparticles (IONPs) from iron (III) chloride by using Brassica oleracea var. capitata sub.var. rubra aqueous peel extract has been reported. The prepared IONPs were characterized with fourier-transform infrared spectroscopy (FT-IR), ultraviolet-visible spectroscopy (UV-VIS), zeta potential, scanning electron microscopy (SEM), and energy-dispersive X-ray spectroscopy (EDX). The cytotoxic effects of IONPs on MCF-7 breast cancer cell line were studied …
The Association Between Mrna Expression Of Resistin, Tnf- Α, Il-6, Il-8, And Er-Α Inperipheral Blood Mononuclear Cells And Breast Cancer, Masome Zare-Moayedi, Fatame Ahmmadpour, Mojtaba Rashidi, Ahmad Ahmadzadeh, Amirahmad Salmasi, Ghorban Mohammadzadeh
The Association Between Mrna Expression Of Resistin, Tnf- Α, Il-6, Il-8, And Er-Α Inperipheral Blood Mononuclear Cells And Breast Cancer, Masome Zare-Moayedi, Fatame Ahmmadpour, Mojtaba Rashidi, Ahmad Ahmadzadeh, Amirahmad Salmasi, Ghorban Mohammadzadeh
Turkish Journal of Medical Sciences
Background/aim: Adipocytokines, adipose tissue-derived proteins, were demonstrated to be involved in the pathogenesis of breast cancer. We assessed the mRNA expression of resistin, tumor necrosis factor-alpha (TNF-α), interleukins 6 and 8 (IL-6, and IL-8), and estrogen receptor alpha (ER-α) in peripheral blood mononuclear cells (PBMCs) of women with and without breast cancer. Materials and methods: The PBMCs were isolated from the whole blood of 32 women with breast cancer and 18 women without breast cancer using density gradient centrifugation. The mRNA expression of the target genes was measured by reverse-transcription polymerase chain reaction (RT-PCR). Body mass index was calculated, additionally, …
The Study Of Sirtuins In Breast Cancer Patients Before And After Radiotherapy, Nazli Helvaci, Hati̇ce Saraçoğlu, Oğuz Gali̇p Yildiz, Eser Kiliç
The Study Of Sirtuins In Breast Cancer Patients Before And After Radiotherapy, Nazli Helvaci, Hati̇ce Saraçoğlu, Oğuz Gali̇p Yildiz, Eser Kiliç
Turkish Journal of Medical Sciences
Background/aim: Targeting the new and unique proteins is an important medical strategy for treating breast cancer. It is quite important to find out proteins that have a role in the development of cancer. Sirtuins (SIRT) are well related in different physiological activities and connected with cancer. We aimed to determine the effect of radiotherapy on SIRT1 and SIRT2, which have not been yet been clarified as a tumor suppressor or promoter. Materials and methods: Twenty-two women with nonmetastatic breast cancer enrolled in the study. Blood samples were taken before and after radiotherapy, soluble SIRT1 and SIRT2 levels were determined with …
The Evaluation Of Breast Findings Detected Through Different Visualisation Techniques Inacromegaly Patients ? A Retrospective Study, Pinar Akhanli, Sema Hepşen, Beki̇r Uçan, Hakan Düğer, Hayri̇ Bostan, Muhammed Kizilgül, Muhammed Erkam Sencar, Erman Çakal
The Evaluation Of Breast Findings Detected Through Different Visualisation Techniques Inacromegaly Patients ? A Retrospective Study, Pinar Akhanli, Sema Hepşen, Beki̇r Uçan, Hakan Düğer, Hayri̇ Bostan, Muhammed Kizilgül, Muhammed Erkam Sencar, Erman Çakal
Turkish Journal of Medical Sciences
Background/aim: It is known that the increased growth hormone (GH) and insulin-like growth factor-1 (IGF-1) have mitogenic and antiapoptotic properties in breast cells in acromegaly. Our study aims to evaluate breast findings in patients with acromegaly by comparing them to the control group. Materials and methods: Sixty-one patients followed with acromegaly diagnosis and 180 healthy controls were included in our study. Demographic data, laboratory results, Breast Imaging-Reporting and Data System (BI-RADS) scores, and breast density evaluated via mammography, malign and benign breast lesions evaluated via mammography, breast ultrasonography (USG), and breast magnetic resonance imaging (MRI) of patients were compared to …
Investigation Of The Efficacy Of Paclitaxel On Some Mirnas Profiles In Breast Cancer Stem Cells, Eli̇f Ertürk, Ferda Ari, Oğuzhan Akgün, Engi̇n Ulukaya, Cem İsmai̇l Küçükali̇, Şaki̇r Ümi̇t Zeybek
Investigation Of The Efficacy Of Paclitaxel On Some Mirnas Profiles In Breast Cancer Stem Cells, Eli̇f Ertürk, Ferda Ari, Oğuzhan Akgün, Engi̇n Ulukaya, Cem İsmai̇l Küçükali̇, Şaki̇r Ümi̇t Zeybek
Turkish Journal of Biology
Understanding of the functions of microRNAs in breast cancer and breast cancer stem cells have been a hope for the development of new molecular targeted therapies. Here, it is aimed to investigate the differences in the expression levels of let-7a, miR-10b, miR-21, miR-125b, miR-145, miR-155, miR-200c, miR-221, miR-222 and miR-335, which associated with gene and proteins in MCF-7 (parental) and MCF-7s (Mammosphere/stem cell-enriched population/CD44+/CD24-cells) cells treated with paclitaxel. MCF-7s were obtained from parental MCF-7 cells. Cytotoxic activity of paclitaxel was determined by ATP assay. Total RNA isolation and cDNA conversion were performed from the samples. Changes in expression levels of …
Endoplasmic Reticulum Stress And Oncomir-Associated Chemotherapeutic Drug Resistance Mechanisms In Breast Cancer Tumors, Leila Mehdizadehtapeh, Pinar Obakan Yerli̇kaya
Endoplasmic Reticulum Stress And Oncomir-Associated Chemotherapeutic Drug Resistance Mechanisms In Breast Cancer Tumors, Leila Mehdizadehtapeh, Pinar Obakan Yerli̇kaya
Turkish Journal of Biology
Breast cancer, as a heterogenous malign disease among the top five leading causes of cancer death worldwide, is defined as by far the most common malignancy in women. It contributes to 25% of all cancer-associated deaths after menopause. Breast cancer is categorized based on the expression levels of cell surface and intracellular steroid receptors [estrogen, progesterone receptors, and human epidermal growth factor receptor (HER2)], and the treatment approaches frequently include antiestrogen, aromatase inhibitors, and Herceptin. However, the management and prevention strategies due to adverse side effects stress the patients. The unsuccessful treatments cause to raise the drug levels, leading to …