Fakülteler
https://hdl.handle.net/20.500.12294/1383
Faculties
2024-03-28T12:01:18Z
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Aberrant miR-3135b and miR-1273g-3p expression in the peripheral blood samples of BRCA1/2 (±) ovarian cancer patients
https://hdl.handle.net/20.500.12294/4079
Aberrant miR-3135b and miR-1273g-3p expression in the peripheral blood samples of BRCA1/2 (±) ovarian cancer patients
Tuncer, Seref Bugra); Celik, Betul; Erciyas, Seda Kilic; Erdogan, Ozge Sukruoglu; Pasin, Ozge; Avsar, Mukaddes; Gultaslar, Busra Kurt; Ghafour, Arash Adamnejad; Uyaroglu, Gamze; Odemis, Demet Akdeniz; Yazici, Hulya
Ovarian cancer (OC) ranks as the eighth most prevalent malignancy among women globally. The short non-coding RNA molecules, microRNAs (miRNAs) target multiple mRNAs and regulate the gene expression. Here in this study, we aimed to validate miR-3135b and miR-1273g-3p as novel biomarkers for prognostic and diagnostic factor OC. After RNA isolation, we analyzed the miR-3135b and miR-1273g-3p expression in peripheral blood samples derived from 150 OC patients. Subsequently, we compared their expression levels with 100 healthy controls. The differences of miR-3135b and miR-1273g-3p expression were detected using the Quantitative Real Time-PCR (qRT-PCR) technique following miRNA-specific cDNA synthesis pursing miRNA separation. The miR-3135b and miR-1273g-3p were higher in OC patients who tested positive for BRCA1/2 compared to BRCA-negative patients, and healthy cases. The level of miR-3135b demonstrated a roughly 4.82-fold increase in OC patients in comparison to the healthy cases, while miR-1273g-3p expression exhibited a roughly 6.77-fold increase. The receiver operating characteristic (ROC) analysis has demonstrated the potential of miR-3135b and miR-1273g-3p as markers for distinguishing between OC patients and healthy controls. The higher expressions of miR-3135b and miR-1273g-3p could be associated with OC development. Moreover, miR-3135b may have a diagnostic potential and miR-1273g-3p may have both diagnostic and prognostic potential in OC cell differentiation. The string analysis has revealed an association between miR-1273g-3p and the MDM2 gene, suggesting a potential link to tumor formation through the proteasomal degradation of the TP53 tumor suppressor gene. Additionally, the analysis indicates an association of miR-1273g-3p with CHEK1, a gene involved in checkpoint-mediated cell cycle arrest. String analysis also indicates that miR-3135b is associated with the MAPK1 gene, causing activation of the oncogenesis cascade. In conclusion, miR-1273g-3p, and miR-3135b exhibit significant potential as diagnostic markers. However, further research is needed to comprehensively investigate these miRNAs diagnostic and predictive characteristics in a larger cohort. © 2023 The Authors
2024-01-01T00:00:00Z
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Temporary external skin plication
https://hdl.handle.net/20.500.12294/4078
Temporary external skin plication
Cologlu, H.; Eyüboğlu, Atilla Adnan
– OBJECTIVE: The aim of this study was to elucidate the external temporary skin plication (ETSP) technique in gynecomastia surgery and evaluate its role in mitigating complications and enhancing cosmetic outcomes. PATIENTS AND METHODS: This study was conducted on patients diagnosed with gynecomastia, explicitly falling under Rohrich Grades IIB and III, with dermal quality being a crucial determinant. Between September 2018 and November 2021, surgical interventions were performed on 96 qualifying patients by the senior author. The operative protocol consisted of ultrasonic and suction-assisted liposuction, supplemented by lateral periareolar piecemeal gland excision. Within the cohort, 42 patients were subjected to the novel ETSP technique. In contrast, the remaining 54 patients underwent standard treatment, serving as the control group for subsequent comparative assessment. RESULTS: One patient required revisions for contour irregularities, while partial nipple necrosis was observed in two patients but healed without surgical intervention. However, saucer-like deformity and total nipple necrosis were not observed in our series. The overall complication rate in our series was 19%, with 9.5% of cases requiring revision. In our control group, the overall complication rate in our series was found to be 22%, with 13% of cases requiring revision. CONCLUSIONS: ETSP provides a homogeneous spread of the excess skin and greatly reduces or eliminates the amount of skin fold formation. ETSP reduces the need for possible skin excision and reduces visible scars and incisions, and it helps improve the results of skin-protective surgeries that are widespread today. © 2024 Verduci Editore s.r.l. All rights reserved.
2024-01-01T00:00:00Z
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Germline mutational variants of Turkish ovarian cancer patients suspected of Hereditary Breast and Ovarian Cancer (HBOC) by next-generation sequencing
https://hdl.handle.net/20.500.12294/4077
Germline mutational variants of Turkish ovarian cancer patients suspected of Hereditary Breast and Ovarian Cancer (HBOC) by next-generation sequencing
Tuncer, Seref Bugra; Celik, Betul; Erciyas, Seda Kilic; Erdogan, Ozge Sukruoglu; Gultaslar, Busra Kurt; Odemis, Demet Akdeniz; Avsar, Mukaddes; Sen, Fatma; Saip, Pinar Mualla; Yazici, Hulya
Hereditary Breast and Ovarian Cancer (HBOC) syndrome is characterized by an increased risk of developing breast cancer (BC) and ovarian cancer (OC) due to inherited genetic mutations. Understanding the genetic variants associated with HBOC is crucial for identifying individuals at high risk and implementing appropriate preventive measures. The study included 630 Turkish OC patients with confirmed diagnostic criteria of The National Comprehensive Cancer Network (NCCN) concerning HBOC. Genomic DNA was extracted from peripheral blood samples, and targeted Next-generation sequencing (NGS) was performed. Bioinformatics analysis and variant interpretation were conducted to identify pathogenic variants (PVs). Our analysis revealed a spectrum of germline pathogenic variants associated with HBOC in Turkish OC patients. Notably, several pathogenic variants in BRCA1, BRCA2, and other DNA repair genes were identified. Specifically, we observed germline PVs in 130 individuals, accounting for 20.63% of the total cohort. 76 distinct PVs in genes, BRCA1 (40 PVs), BRCA2 (29 PVs), ATM (1 PV), CHEK2 (2 PVs), ERCC2 (1 PV), MUTYH (1 PV), RAD51C (1 PV), and TP53 (1PV) and also, two different PVs (i.e., c.135–2 A>G p.? in BRCA1 and c.6466_6469delTCTC in BRCA2) were detected in a 34-year-old OC patient. In conclusion, our study contributes to a better understanding of the genetic variants underlying HBOC in Turkish OC patients. These findings provide valuable insights into the genetic architecture of HBOC in the Turkish population and shed light on the potential contribution of specific germline PVs to the increased risk of OC. © 2024 Elsevier GmbH
2024-01-01T00:00:00Z
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Marine Streptomyces sp. PGC 39
https://hdl.handle.net/20.500.12294/4076
Marine Streptomyces sp. PGC 39
Ahmad, Rabbia; Tousif, Muhammad Imran; Nazir, Mamona; Yaqoob, Asma; Shah, Syed Adnan Ali; Zengin, Gokhan; Uba, Abdullahi Ibrahim; Muhammad, Shabbir
Macrolidycin (1) and pyrachlomycin (2) were isolated from the culture broth of the marine bacterium Streptomyces sp. GSCWU 39. The isolates were characterized due to 1D and 2D-NMR spectral analyses and high resolution mass spectrometry, and were evaluated for their anti-bacterial and anti-fungal activities. At a concentration of 30 μg/mL, the compounds 1 and 2 inhibited the growth of a gram positive bacterium Streptomyces viridochromogenes and the fungus Mucor miehei. Further in order to deep the understanding for antibacterial and antifungal activities the isolates were docked against methyltransferase AviRb and ergosterol. Compounds 1 and 2 had strong binding energies of −7.32 and −6.32 kcal/mol, respectively, for the methyltransferase AviRb. Additionally, our findings for antifungal activities are further corroborated by the docking results of ergosterol with compounds 1 and 2. © 2024 Elsevier Ltd
2024-01-01T00:00:00Z