Burçak Şaziye Karaca

Dr. Burçak Şaziye Karaca


Research Focus & Metrics

Academic Career Length

22Years (2005-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

View All Publications
3 June 2013 in European Journal of Cancer Care
Verified
Journal Article
Closed access
PDF file
MEM. Ergun
M. Ergun
SES. Eyigor
S. Eyigor
BKBurçak Şaziye Karaca
Burçak Şaziye Karaca
AKA. Kisim
A. Kisim
RUR. Uslu
R. Uslu
The aim of this study was to explore the effects of exercise on angiogenesis and apoptosis-related molecules, quality of life, fatigue and depression in patients who completed breast cancer treatment. Sixty breast cancer patients were randomised into three groups, as supervised exercise group, home exercise group and education group. Angiogenesis and apoptosis-related cytokine levels and quality of life (EORTC QOL-C30: European Organisation for Research and Treatment of Cancer Quality of Life C30), fatigue (Brief Fatigue Inventory) and depression (BDI: Beck Depression Inventory) scores were compared before and after a 12-week exercise programme. After the exercise programme, statistically significant decreases were found in interleukin-8 and neutrophil activating protein-78 levels in the home exercise group (P < 0.05). The education group showed a statistically significant increase in monocyte chemoattractant protein-1 level (P < 0.05). Functional score and global health score of EORTC QOL-C30 in the supervised exercise group and functional score of EORTC QOL-C30 in the home exercise group increased significantly after exercise programme (P < 0.05). BDI score was significantly lower in the supervised exercise group after the exercise programme (P < 0.05). Changes in angiogenesis and apoptosis-related molecules in the study groups suggest a possible effect of exercise on these parameters. Exercise programmes are safe and effective on quality of life and depression in breast cancer patients whose treatments are complete.


19 November 2012 in Nutrition and Cancer
Verified
Journal Article
Closed access
EBEmir Bozkurt
Emir Bozkurt
HAHarika Atmaca
Harika Atmaca
AKAsli Kisim
Asli Kisim
SUSelim Uzunoglu
Selim Uzunoglu
RURuchan Uslu
Ruchan Uslu
BKBurçak Şaziye Karaca
Burçak Şaziye Karaca
Thymus (T.) serpyllum (wild thyme) is an aromatic medicinal plant due to its several biological properties, including anticancer activity. Breast cancer is one of the most common malignancies and increasing evidence supports that it is not only a genetic but also an epigenetic disease. Epigenetics investigates changes in gene expression caused by mechanisms that do not involve alterations in DNA sequence. DNA methylation and histone acetylation are the most widely studied epigenetic changes in cancer cells. This study evaluated the effects of T. serpyllum on apoptosis and epigenetic events in breast cancer cells. XTT cell viability assay was used to determine cytotoxicity. DNA fragmentation and caspase 3/7 activity assays were used in the assesment of apoptosis. DNA methyltransferase (DNMT) and histone deacetylase (HDAC) activities were evaluated by ELISA and verified by qRT-PCR. T. serpyllum extract induced significant cytotoxicity in breast cancer cells (MCF-7 and MDA-MB-231) but not in normal cells. It also induced apoptosis and inhibited the DNMT and HDAC activities in MDA-MB-231 cells. In the present study, the first preliminary data on the effects of the methanolic extract of T. serpyllum in normal and breast cancer cells were obtained and suggest that T. serpyllum may be a promising candidate in the development of novel therapeutic drugs for breast cancer treatment.

21 May 2010 in Toxicology Mechanisms and Methods
Verified
Journal Article
Closed access
PDF file
SUSelim Uzunoglu
Selim Uzunoglu
BKBurçak Şaziye Karaca
Burçak Şaziye Karaca
HAHarika Atmaca
Harika Atmaca
AKAsli Kisim
Asli Kisim
CSCanfeza Sezgin
Canfeza Sezgin
RURuchan Uslu
Ruchan Uslu
This study compared the two different commercially available in vitro viability assays: XTT and Alamar blue (AB), to detect anti-proliferative effects of AT-101, a cotton plant extract, on six different human carcinoma cell lines including: prostate (PC-3 and DU-145), breast (MCF-7 and MDA-MB-231), and ovary (OVCAR-3 and MDAH 2774) in a time- and dose-dependent manner. Cells were exposed to AT-101 in the concentration range of 2.5–40 µM for 24, 48, and 72 h. The AB assay was slightly more sensitive than the XTT assay in the evaluation of AT-101 at 24 h, suggesting that the AB assay might be used for detecting early changes in cell viability as compared to the XTT assay. Moreover, the AB assay showed less intra-assay variability as compared to the XTT. The non-toxic, non-radioactive AB metabolism assay allows rapid assessment of large numbers of samples, with simple equipment and at reduced cost for continuous monitoring of cancer cell viability, and, thus, should be accepted as a suitable alternative viability method.

1 August 2013 in Toxicology Letters
Verified
Journal Article
Closed access
HAHarika Atmaca
Harika Atmaca
EBEmir Bozkurt
Emir Bozkurt
SUSelim Uzunoglu
Selim Uzunoglu
RURuchan Uslu
Ruchan Uslu
BKBurçak Şaziye Karaca
Burçak Şaziye Karaca

16 March 2025 in Clinical and Translational Oncology
Verified
Journal Article
Open access
PDF file
CACaner Acar
Caner Acar
HYHaydar Çağatay Yüksel
Haydar Çağatay Yüksel
GŞGökhan Şahin
Gökhan Şahin
FAFatma Pinar Açar
Fatma Pinar Açar
DGDamla Gunenc
Damla Gunenc
BKBurçak Şaziye Karaca
Burçak Şaziye Karaca
Background: Despite the success of immune checkpoint inhibitors (ICIs) in metastatic melanoma, many patients fail to derive meaningful benefit, underscoring the urgent need for accessible prognostic biomarkers. The C-reactive protein (CRP)–albumin–lymphocyte (CALLY) index, an immunonutritional index, has shown prognostic value in various cancers. Previous studies indicate that systemic inflammation and nutritional status influence ICI efficacy, suggesting the potential relevance of the CALLY index in metastatic melanoma. This study evaluates the CALLY index’s role in metastatic melanoma patients treated with anti-PD-1 therapy. Methods: This retrospective study analysed 92 patients with metastatic melanoma who were treated with anti-PD-1 monotherapy at Ege University’s Faculty of Medicine between 2015 and 2023. The CALLY index was calculated using the pre-treatment CRP, albumin and lymphocyte levels. Kaplan–Meier analysis was used to estimate survival outcomes, and univariate and multivariate Cox regression models were employed to identify independent prognostic factors. A predictive nomogram incorporating the CALLY index and other significant variables was then developed. Results: The optimal CALLY index cutoff was determined to be 2. Patients with a low CALLY index (≤ 2) had worse median overall survival (OS) and progression-free survival (PFS) when compared with those who had a high CALLY index (> 2) (median OS: 9.6 vs 31.3 months, p < 0.001; median PFS: 3.8 vs 10.6 months, p = 0.001). Multivariate analysis identified the CALLY index, lactate dehydrogenase above the upper limit of normal, Eastern Cooperative Oncology Group score ≥ 2, M1c/M1d staging and acral/mucosal melanoma subtypes to be independent predictors of OS. A nomogram was then constructed based on these factors, yielding a concordance index of 0.705 (95% confidence interval: 0.634–0.776). This model stratified patients into low-, intermediate- and high-risk groups, with the high-risk group showing significantly worse OS than the intermediate- and the low-risk groups (p < 0.001). Conclusion: The CALLY index is a cost-effective and independent prognostic biomarker that can aid in risk stratification and guide treatment decisions in patients with metastatic melanoma receiving anti-PD-1 therapy.