10 results on '"Sak S"'
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2. EP.04E.06 The Prediction of Spread Through Air Spaces with Preoperative 18F-FDG PET/CT in Clinical Stage I Lung Cancer.
- Author
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Kocaman, G., Soydal, C., Dursun, S., Kahya, Y., Dizbay Sak, S., and Kayı Cangır, A.
- Published
- 2024
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3. Wound healing effect of polydeoxyribonucleotide derived from Hibiscus sabdariffa callus via Nrf2 signaling in human keratinocytes.
- Author
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Kim E, Choi S, Kim SY, Jang SJ, Lee S, Kim H, Jang JH, Seo HH, Lee JH, Choi SS, and Moh SH
- Subjects
- Humans, Antioxidants pharmacology, Matrix Metalloproteinase 9 metabolism, Matrix Metalloproteinase 9 genetics, Skin Aging drug effects, HaCaT Cells, Keratinocytes drug effects, Keratinocytes metabolism, Hibiscus chemistry, NF-E2-Related Factor 2 metabolism, NF-E2-Related Factor 2 genetics, Wound Healing drug effects, Polydeoxyribonucleotides pharmacology, Signal Transduction drug effects
- Abstract
There has been a growing interest in skin recovery in both the medical and cosmetics fields, leading to an increasing number of studies reporting diverse materials being utilized for this purpose. Among them, polydeoxyribonucleotide (PDRN) is known for its efficacy in skin repair processes, while Hibiscus sabdariffa (HS) is recognized for its antioxidant, hypolipidemic, and wound healing properties, including its positive impact on mammalian skin and cells. We hypothesized that these characteristics may have a germane relationship during the healing process. Consequently, we induced calli from HS and then extracted PDRN for use in treating human keratinocytes. PDRN (5 μg/mL) had considerable wound healing effects and wrinkle improvement effects. To confirm its function at the molecular level, we performed real-time polymerase chain reaction, western blotting, and immunocytochemistry. Furthermore, genes related to wound healing (MMP9, Nrf2, KGF, VEGF, SOD2, and AQP3) were significantly upregulated. Additionally, the protein expression of MMP9, AQP3, and CAT, which are closely related to wound healing and antioxidant cascades, was considerably enhanced. Based on cellular morphology and molecular-level evidence, we propose that PDRN from calli of HS can improve wound healing in human keratinocytes. Furthermore, its potential to serve as a novel material in cosmetic products is demonstrated., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024. Published by Elsevier Inc.)
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- 2024
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4. Clinical impacts of concomitant left atrial appendage occlusion during mitral valve surgery in patients with mitral regurgitation.
- Author
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Seo J, Lee HJ, Cho I, Suh YJ, Lee SH, Lee S, Hong GR, Ha JW, Kim YJ, and Shim CY
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- Humans, Male, Female, Aged, Middle Aged, Retrospective Studies, Thromboembolism etiology, Thromboembolism prevention & control, Treatment Outcome, Cardiac Surgical Procedures adverse effects, Cardiac Surgical Procedures methods, Mitral Valve Insufficiency surgery, Mitral Valve Insufficiency complications, Atrial Appendage surgery, Mitral Valve surgery, Atrial Fibrillation surgery
- Abstract
Surgical occlusion of the left atrial appendage (LAA) during cardiac surgery in patients with atrial fibrillation (AF) is known to reduce thromboembolism. However, data on the clinical significance of LAA occlusion (LAAO) in patients with mitral regurgitation (MR) are lacking. A total of 237 AF patients with chronic severe MR who underwent mitral valve (MV) surgery were retrospectively analyzed. Patients were divided into two groups according to concomitant LAAO or LAA preservation. The primary outcome was a composite of all-cause death and thromboembolic events (ischemic stroke or systemic embolism). The LAA was surgically occluded in 98 (41%) patients and preserved in 139 (59%) patients. During the follow-up period (median, 37 months), 29 primary outcomes occurred. In the Kaplan-Meyer analysis, the LAA preservation group showed a greater cumulative incidence of the primary outcome (P = 0.002) and thromboembolic events (P = 0.003) than the LAAO group. In the univariate Cox regression analysis, coronary artery disease, CHA
2 DS2 -VASc score, a cauliflower-shaped LAA, Maze, and no LAAO were significantly associated with the primary outcome. In the multivariate Cox regression analysis, concomitant LAAO was significantly linked to the primary outcome (hazard ratio [HR]: 0.30, 95% confidence interval [CI]: 0.10-0.91, P = 0.033) and thromboembolic events (HR: 0.19, 95% CI: 0.04-0.87, P = 0.032). These benefits from LAAO were consistent, even after propensity score-matched analysis. For patients undergoing surgery for chronic MR who also have AF, concomitant surgical LAAO is associated with favorable clinical outcome., (© 2024. The Author(s).)- Published
- 2024
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5. Effects of dexmedetomidine on renal function after cardiac surgery for infective endocarditis: An interim analysis of a randomized controlled trial.
- Author
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Ham SY, Shim JK, Lee S, Ko SH, Soh S, and Kwak YL
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- Humans, Male, Female, Middle Aged, Aged, Infusions, Intravenous, Norepinephrine blood, Interleukin-6 blood, Epinephrine, Incidence, Adrenergic alpha-2 Receptor Agonists administration & dosage, Adult, Kidney drug effects, Dexmedetomidine administration & dosage, Cardiac Surgical Procedures adverse effects, Acute Kidney Injury etiology, Acute Kidney Injury prevention & control, Postoperative Complications prevention & control, Postoperative Complications epidemiology, Endocarditis
- Abstract
Background: Patients undergoing cardiac surgery for infective endocarditis (IE) are at a high risk of postoperative acute kidney injury (AKI) owing to heightened systemic inflammation. Therefore, we aimed to investigate the effect of dexmedetomidine on postoperative AKI in patients who underwent cardiac surgery for IE., Methods: A total of 63 patients who underwent cardiac surgery for IE were randomly assigned to receive either intravenous dexmedetomidine infusion of 0.4 μg kg
-1 h-1 (DEX group) or normal saline infusion (control group) for 24 h after induction of anesthesia. The occurrence of AKI within seven days postoperation, epinephrine, norepinephrine, and interleukin-6 levels, as well as postoperative morbidities, were assessed. An intertrim analysis was conducted using Pocock's alpha spending function at α = 0.05 and β = 0.2., Results: This trial was early terminated according to the results of interim analysis performed when 60 % of the pre-set number of patients have been collected. The incidence of AKI was significantly lower in the DEX group than in the control group (32.3 % vs. 9.4 %, p = 0.025). Patients in the DEX group had significantly lower epinephrine levels than those in the control group, whereas norepinephrine and interleukin-6 levels were similar. Perioperative mean arterial pressure or heart rate did not differ between the groups., Conclusions: Dexmedetomidine administration for 24 h starting from induction of anesthesia significantly reduced the incidence of postoperative AKI after cardiac surgery for IE (by 29 % vs. control) without hemodynamic side effects. This was accompanied by a significant attenuation of postoperative increase in serum epinephrine levels., Competing Interests: Declaration of competing interest None., (Copyright © 2024 Asian Surgical Association and Taiwan Society of Coloproctology. Published by Elsevier B.V. All rights reserved.)- Published
- 2024
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6. Long-term Outcomes of Mitral Valve Repair for Atrial Functional Mitral Regurgitation.
- Author
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Shin JH, Lee SH, Joo HC, Youn YN, Kim JH, and Lee S
- Abstract
Background: Atrial functional mitral regurgitation (AFMR), defined by normal left ventricular function, enlarged left atrium, and a dilated mitral valve annulus, has been a concept discussed for >10 years. However, there are still no established guidelines for its treatment in the American College of Cardiology/American Heart Association recommendations. This study aimed to determine the long-term outcomes of mitral annuloplasty as a treatment for AFMR., Methods: We analyzed 1435 patients who underwent mitral valve repair at our institution between 2005 and 2020, with 162 classified as having AFMR. Exclusion criteria for AFMR were established based on preoperative echocardiography and operative notes. The primary outcome was overall mortality, and the secondary outcome was MR recurrence, which was defined as moderate or greater mitral regurgitation observed on echocardiography during the follow-up period, analyzed using our hospital's medical records and data from the National Statistical Office., Results: The median follow-up duration for the entire patient cohort was 6.1 years (interquartile range, 3.2-11.2 years). Patients had a 5-year survival rate of 86% and a 10-year survival rate of 73%, with freedom from MR recurrence rates of 89% and 80% at 5 and 10 years, respectively. Although all 162 patients had moderate or greater MR before surgery, most experienced trivial or mild MR after mitral valve repair throughout the follow-up period., Conclusions: In summary, mitral valve repair effectively treats patients with AFMR, addressing survival and mitigating MR recurrence., Competing Interests: Disclosures The authors have no conflicts of interest to disclose., (Copyright © 2024 The Society of Thoracic Surgeons. Published by Elsevier Inc. All rights reserved.)
- Published
- 2024
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7. Mitotically Active Follicular Nodule in Early Childhood: A Case Report with a Novel Mutation in the Thyroglobulin Gene
- Author
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Kızılcan Çetin S, Aycan Z, Şıklar Z, Dizbay Sak S, Ceylaner S, Özsu E, and Berberoğlu M
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- Humans, Female, Child, Mitosis, Thyroid Neoplasms genetics, Thyroid Neoplasms diagnosis, Thyroid Neoplasms pathology, Thyroidectomy, Adenocarcinoma, Follicular genetics, Adenocarcinoma, Follicular diagnosis, Adenocarcinoma, Follicular pathology, Thyroglobulin genetics, Thyroid Nodule genetics, Thyroid Nodule diagnosis, Thyroid Nodule pathology, Mutation
- Abstract
Dyshormonogenesis (DG) is the failure of thyroid hormone production due to a defect in thyroid hormonogenesis. Loss-of-function mutations in the thyroglobulin ( TG ) gene are a cause of DG, leading to gland stimulation by thyroid-stimulating hormone (TSH), resulting in goiter. We report a mitotically active follicular nodule in an 11-year-old female with a novel mutation in the TG gene. The patient had been under follow-up for congenital hypothyroidism (CH) since the neonatal period, and she had normal TSH levels on replacement therapy. Genetic test revealed a novel compound heterogeneous mutation [c.2149C>T (p.R717*) (P.Arg717Ter) / c.5361_5362delCCinsG (p.H1787Qfs*3) (p.His1787GlnfsTer3)] in the TG gene. She underwent total thyroidectomy for a thyroid nodule that was reported as Bethesda IV on fine needle aspiration biopsy (FNAB) and noted as suspicious for noninvasive follicular thyroid neoplasm with papillary-like nuclear features (NIFTP). Pathological examination revealed a 16 mm, well-demarcated follicular nodule with a solid/insular pattern. Mitotic activity and Ki67 proliferation index were unusually high (10 mitoses/mm2 and 10%, respectively). Marked cellular pleomorphism and nuclear atypia are well-known diagnostic pitfalls in patients with dyshormonogenetic goiter. However, high mitotic activity is a feature that is less commonly reported in dyshormonogenetic goiter and may raise suspicion of poorly differentiated carcinoma when observed together with a solid pattern. The absence of signs of invasion, history of CH, and awareness of the presence of mutations compatible with dyshormonogenetic goiter can prevent the overinterpretation of such lesions. The risk of cancer development in the dyshormonogenetic thyroid gland is possible in childhood. The close follow-up is life-saving and prevents morbidities and possible mortality., Competing Interests: Conflict of interest: None declared., (©Copyright 2024 by Turkish Society for Pediatric Endocrinology and Diabetes / The Journal of Clinical Research in Pediatric Endocrinology published by Galenos Publishing House.)
- Published
- 2024
- Full Text
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8. Long-term results of atrial fibrillation surgery concomitant with mitral valve surgery: A propensity score-matched multicenter study.
- Author
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Kim MS, Kim HJ, Je HG, Cho YH, Kim JB, Lee S, and Lee SH
- Subjects
- Humans, Female, Male, Middle Aged, Aged, Retrospective Studies, Time Factors, Treatment Outcome, Postoperative Complications mortality, Postoperative Complications etiology, Postoperative Complications epidemiology, Risk Factors, Heart Valve Prosthesis Implantation adverse effects, Heart Valve Prosthesis Implantation mortality, Risk Assessment, Atrial Fibrillation mortality, Atrial Fibrillation complications, Atrial Fibrillation surgery, Propensity Score, Mitral Valve surgery, Heart Valve Diseases surgery, Heart Valve Diseases mortality, Heart Valve Diseases complications
- Abstract
Objective: The aim of the study was to elucidate the long-term outcomes of atrial fibrillation surgery in patients with atrial fibrillation and mitral valve disease by comparing the patients who underwent mitral valve surgery with and without atrial fibrillation surgery., Methods: Between 2005 and 2017, 2680 patients with atrial fibrillation who underwent mitral valve surgery (mitral valve surgery with atrial fibrillation surgery, n = 1841; mitral valve surgery without atrial fibrillation surgery, n = 839) at 5 centers were included. After propensity score matching, 1442 patients were extracted (atrial fibrillation surgery group, n = 721; non-atrial fibrillation surgery group, n = 721). All-cause mortality, cardiac mortality, major adverse cardiac and cerebrovascular events, stroke or transient ischemic attack, and permanent pacemaker implantation were compared between the atrial fibrillation surgery and non-atrial fibrillation surgery groups., Results: Overall survivals at 5 and 10 years postoperatively were 91.0% and 80.7% in the atrial fibrillation surgery group and 86.5% and 75.9% in the non-atrial fibrillation surgery group, respectively (P = .013). Cardiac mortality-free survivals at 5 and 10 years postoperatively were 96.9% and 91.7% in the atrial fibrillation surgery group and 90.9% and 83.7% in the non-atrial fibrillation surgery group, respectively (P < .001). Cumulative incidence of reoperation, major adverse cardiac and cerebrovascular events, and stroke or transient ischemic attack was lower in the matched atrial fibrillation surgery group compared with the matched non-atrial fibrillation surgery group up to 15 years postoperatively (P = .010, P < .001, and P = .012, respectively). Cumulative incidence of permanent pacemaker implantation was higher in the matched atrial fibrillation surgery group compared with the matched non-atrial fibrillation surgery group (P < .001)., Conclusions: In patients with atrial fibrillation and mitral valve disease, mitral valve surgery concomitant with atrial fibrillation surgery was associated with lower mortality, cardiac mortality, major adverse cardiac and cerebrovascular events, and stroke or transient ischemic attack up to 15 years after surgery when compared with mitral valve surgery without atrial fibrillation surgery., Competing Interests: Conflict of Interest Statement The authors reported no conflicts of interest. The Journal policy requires editors and reviewers to disclose conflicts of interest and to decline handling or reviewing manuscripts for which they may have a conflict of interest. The editors and reviewers of this article have no conflicts of interest., (Copyright © 2024 The Authors. Published by Elsevier Inc. All rights reserved.)
- Published
- 2024
- Full Text
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9. Risk factors of posterior reversible encephalopathy syndrome in patients with preeclampsia or eclampsia: A retrospective review.
- Author
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Tulin Gesoglu D, Murat C, Dilek A, Ozlem E, and Sibel S
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- Humans, Female, Pregnancy, Retrospective Studies, Adult, Risk Factors, Blood Pressure, Posterior Leukoencephalopathy Syndrome diagnostic imaging, Posterior Leukoencephalopathy Syndrome etiology, Posterior Leukoencephalopathy Syndrome physiopathology, Pre-Eclampsia blood, Pre-Eclampsia physiopathology, Eclampsia diagnostic imaging
- Abstract
Background and Purpose:
Posterior reversible encephalopathy syndrome (PRES) is characterized by vasogenic edema, usually reversible, with the prominent involvement of the parietal and occipital lobes. The exact etiopathogenesis leading to PRES is unknown. Because signs of eclampsia and preeclampsia in neuroimaging often overlap and manifest as PRES, we aimed to evaluate whether demographic, clinical, and laboratory parameters predict PRES in patients with preeclampsia or eclampsia.
., Methods:213 pre-eclampsia or eclampsia patients with cranial imaging were retrospectively examined. We recorded the patients’ demographic information, systolic blood pressure (SBP), diastolic blood pressure (DBP), mean arterial pressure (MAP), hemogram, biochemical indicators, clinical symptoms, and imaging features.
., Results:Of all patients, 69% (n = 147) had preeclampsia while 31% (n = 66) had eclampsia, and 24.4% (n = 53) were diagnosed with PRES. The mean age of patients who developed PRES was 25.81 ± 6.07 years and thus significantly less than that of patients who did not develop PRES (p = .000). Patients with PRES had significantly higher mean SBP (p = .015), DBP (p = .009), and MAP (p = .003) than patients without PRES, along with significantly higher aspartate aminotransferase (ASAT; p = .001), alanine aminotransferase (ALAT; p = .001) blood urea nitrogen (BUN; p = .001), white blood cell (WBC; p = .003), neutrophil (p = .001), and hemoglobin (Hb; p = .027) levels, but significantly lower albumin (p = .000) levels.
., Conclusion:Age, high blood pressure, and BUN, neutrophil, and WBC levels were predictors of the development of PRES in patients with preeclampsia and eclampsia. Early neuroimaging considering those predictors should be performed to diagnose PRES in patients with preeclampsia and eclampsia.
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- 2024
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10. Microcomputed tomography as a diagnostic tool for detection of lymph node metastasis in non-small cell lung cancer: A decision-support approach for pathological examination "A pilot study for method validation".
- Author
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Kayı Cangır A, Güneş SG, Orhan K, Özakıncı H, Kahya Y, Karasoy D, and Dizbay Sak S
- Abstract
Background: Non-small cell lung cancer (NSCLC) patients without lymph node (LN) metastases (pN0) may exhibit different survival rates, even when their T stage is similar. This divergence could be attributed to the current pathology practice, wherein LNs are examined solely in two-dimensional (2D). Unfortunately, adhering to the protocols of 2D pathological examination does not ensure the exhaustive sampling of all excised LNs, thereby leaving room for undetected metastatic foci in the unexplored depths of tissues. The employment of micro-computed tomography (micro-CT) facilitates a three-dimensional (3D) evaluation of all LNs without compromising sample integrity. In our study, we utilized quantitative micro-CT parameters to appraise the metastatic status of formalin-fixed paraffin-embedded (FFPE) LNs., Methods: Micro-CT scans were conducted on 12 FFPEs obtained from 8 NSCLC patients with histologically confirmed mediastinal LN metastases. Simultaneously, whole-slide images from these FFPEs underwent scanning, and 47 regions of interest (ROIs) (17 metastatic foci, 11 normal lymphoid tissues, 10 adipose tissues, and 9 anthracofibrosis) were marked on scanned images. Quantitative structural variables obtained via micro-CT analysis from tumoral and non-tumoral ROIs, were analyzed., Result: Significant distinctions were observed in linear density, connectivity, connectivity density, and closed porosity between tumoral and non-tumoral ROIs, as indicated by kappa coefficients of 1, 0.90, 1, and 1, respectively. Receiver operating characteristic analysis substantiated the differentiation between tumoral and non-tumoral ROIs based on thickness, linear density, connectivity, connectivity density, and the percentage of closed porosity., Conclusions: Quantitative micro-CT parameters demonstrate the ability to distinguish between tumoral and non-tumoral regions of LNs in FFPEs. The discriminatory characteristics of these quantitative micro-CT parameters imply their potential usefulness in developing an artificial intelligence algorithm specifically designed for the 3D identification of LN metastases while preserving the FFPE tissue., Competing Interests: The authors declare no conflict of interest., (© 2024 The Authors.)
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- 2024
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