TR-Dizin İndeksli Yayınlar Koleksiyonu
Permanent URI for this collectionhttps://hdl.handle.net/11727/4808
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Item Relapsed acute myeloid leukemia presenting with myocardial hypertrophy and constrictive pericardial physiology(2019) Acibuca, Aynur; Yeral, Mahmut; Kocer, Nazim Emrah; Koc, Zafer; Gullu, Hakan; 0000-0002-3444-8845; 31062759; ABG-4047-2020; ABC-4148-2020Item Non-Hematologic Malignancies Metastasing to the Bone Marrow: A Record-Based Descriptive Study From A Tertiary Center(2019) Aytan, Pelin; Kocer, Nazim Emrah; Yeral, Mahmut; Gereklioglu, Cigdem; Kasar, Mutlu; Buyukkurt, Nur Hilal; Asma, Suheyl; Ozdogu, Hakan; Boga, CanThe aim of this study is to assess the cases of nonhematologic maiignancies that had bone marrow (BM) metastasis with respect to hematologic abnormalities, radiologic findings and pathologic findings. All of the patients with BM investigation were retrospectively evaluated. The patients with BM metastasis by a non-hematologic malignancy were assessed. Data regarding patient characteristics including peripheral blood evaluation findings, imaging findings, BM evaluation results and survival were obtained from patient files and computer based electronic database. 30 cases were detected among 1831 BM aspirations and biopsies. The most common malignancies were breast (36.7%), prostate (13.3%), gastric(13.3%) and lung (13.3%) adenocarcinomas. 90.9% and 75% of the cases had positive radiologic findings with PET/CT and CT respectively. 43.3% of the patients died during the study period and the median time from BM assessment to death was 2 months. Anemia, thrombocytopenia and leukopenia were present in 90%, 73.3% and 20% respectively. Lactate dehydrogenase and alkaline phosphatase were elevated in 90% and 80% respectively. In 76.2% a leukoerythroblastic blood picture was present. All the cases were diagnosed with biopsy and aspiration detected infiltration in 40% and in 4 metastatic patients (13.3%) the aspiration was false negative. In 46.7% the aspiration resulted with dry tap. Grade 3 fibrosis was present in 76.7%. BM assessment is a minimally invasive technique and provides very beneficial clinical data, however, because the survival is very short after BM assessment and the PET/CT has a considerable sensitivity it is not necessary to confirm BM metastasis in patients whose tumor stage is already known.Item Use of Mesenchymal Cells to Modulate Immune Suppression and Immune Reconstruction in a Patient with Aplastic Anemia Complicated by Invasive Sino-Orbital Aspergillosis(2014) Ozdogu, Hakan; Yeral, Mahmut; Boga, Can; Kozanoglu, IlknurCultured human bone marrow mesenchymal cells (MSCs) have immunomodulatory and tissue regenerative properties. This report summarizes the result of post-transplant treatment with MSCs of a 26-year-old patient with aplastic anemia complicated by invasive sino-orbital aspergillosis. The patient was treated with MSCs to benefit from the dual effects of MSCs in immune reconstitution: suppression against alloreactive T cells and facilitation of the re-engraftment process. The patient did not develop acute or chronic graft-versus-host disease. The aspergillus infection healed completely. The engraftment failure was also ended without any complications. During his last visit in his fourth year after transplantation, the patient was in hematological remission. Human bone marrow-derived MSCs seem to have an important role in preventing or overcoming immunological complications in patients who undergo stem cell transplantation.Item Tunnelled Central Venous Catheter-Related Problems in the Early Phase of Haematopoietic Stem Cell Transplantation and Effects on Transplant Outcome(2015) Yeral, Mahmut; Boga, Can; Oguzkurt, Levent; Aliskan, Hikmet Eda; Ozdogu, Hakan; Demiroglu, Yusuf Ziya; 25805675Objective: Haematopoietic stem cell recipients need central venous catheters (CVCs) for easy administration of intravenous fluid, medications, apheresis, or dialysis procedures. However, CVCs may lead to infectious or non-infectious complications such as thrombosis. The effect of these complications on transplantation outcome is not clear. This manuscript presents the complication rates of double-lumen tunnelled CVCs and their effect on transplantation outcome. Materials and Methods: Data from 111 consecutive patients, of whom 75 received autologous and 36 received allogeneic peripheral blood stem cell transplantations, were collected retrospectively. The data were validated by the Record Inspection Group of the related JACIE-accredited transplantation centre. Results: Thrombosis developed in 2.7% of recipients (0.9 per 1000 catheter days). Catheter-related infection was identified in 14 (12.6%) patients (3.6 per 1000 catheter days). Coagulase-negative Staphylococcus was the most common causative agent. Engraftment time, rate of 100-day mortality, and development of grade II-IV graft-versus-host disease were not found to be associated with catheter-related complications. Conclusion: These results indicate that adverse events related with tunnelled CVCs are manageable and have no negative effects on transplant outcome.Item A Rare Complication Developing After Hematopoietic Stem Cell Transplantation: Wernicke's Encephalopathy(2015) Solmaz, Soner; Gereklioglu, Cigdem; Tan, Meliha; Demir, Senay; Yeral, Mahmut; Korur, Asli; Boga, Can; Ozdogu, Hakan; 25912759Thiamine is a water-soluble vitamin. Thiamine deficiency can present as a central nervous system disorder known as Wernicke's encephalopathy, which classically manifests as confusion, ataxia, and ophthalmoplegia. Wernicke's encephalopathy has rarely been reported following hematopoietic stem cell transplantation. Herein, we report Wernicke's encephalopathy in a patient with acute myeloid leukemia who had been receiving prolonged total parenteral nutrition after haploidentical allogeneic hematopoietic stem cell transplantation. To the best of our knowledge, this is the first case reported from Turkey in the literature.Item Red blood cell alloimmunization in patients with sickle cell disease in Turkey: a single center retrospective cohort study(2016) Solmaz, Soner; Karacaoglu, Pelin; Gereklioglu, Cigdem; Asma, Suheyl; Korur, Asli; Buyukkurt, Nurhilal; Kasar, Mutlu; Yeral, Mahmut; Kozanoglu, Ilknur; Boga, Can; Ozdogu, Hakan; 0000-0002-5086-5593; 0000-0002-8902-1283; 0000-0003-3856-7005; 0000-0002-0895-4787; 0000-0002-5268-1210; 0000-0002-9680-1958; AAD-5616-2021; AAD-5542-2021; AAL-3906-2021; AAE-1457-2021; ABC-4148-2020; AAD-6222-2021; AAE-1241-2021Purpose: We aimed to investigate erythrocyte alloimmunization frequency and related factors in our region where SCD is common Material and Methods: This study was planned as a single center, cross-sectional and retrospective cohort study. A total of 216 patients who had been followed up due to SCD [Hemoglobin (Hb) SS, Hb S-beta thalassemia, Hb S-alpha thalassemia] were included in this study. Patients were divided to two groups according to amount of transfusion. The patients who had received less than 6 transfusions per year and who did not have the history of erythropheresis were allocated to Group 1, and the patients who had received 6 or more simple transfusion per year or who had undergone erythrocyte exchange were allocated to Group 2 Results: Of 216 SCD patients included in the study. Alloimmunization was detected in 67 (31.0%) out of 216 patients who underwent transfusion, and in 17 (30.4%) out of 56 patients in Group 1 and in 50 (31.3%) out of 160 patients in Group 2. When the patients were analyzed according to alloimmunization development, our study revealed that neither SCD complications are a risk factor for alloimmunization nor alloimmunization increases mortality rates Conclusion: High alloimmunization frequency found in our study suggests the insufficient adherence of alloimmunization-prevention policies in RBC transfusions performed except experienced institutions. Therefore alloimmunization may be reduced or prevented through performing extended red cell typing among SCD patientsItem Is the Game Over or Starting Again? The Role of the Transplant Team in Genetic Counseling for Adult Sickle Cell Disease Recipients(2017) Aytan, Pelin; Gereklioglu, Cigdem; Yeral, Mahmut; Korur, Asli; Asma, Suheyl; Kozanoglu, Ilknur; Ozdogu, Hakan; Boga, Can; 0000-0002-5086-5593; 0000-0002-5268-1210; 0000-0001-5335-7976; 0000-0002-8902-1283; 0000-0002-2553-7715; 0000-0002-9680-1958; 0000-0002-9580-628X; 27956368; AAD-5616-2021; AAE-1241-2021; AAL-6544-2020; ABC-4148-2020; AAI-7831-2021; AAD-5542-2021; AAE-3833-2019; AAD-6222-2021Item Isolated Tuberculous Epididymoorchitis Developing After Allogeneic Haematopoietic Stem Cell Transplantation: A Case Report(2017) Yeral, Mahmut; Demiroglu, Yusuf Ziya; Gul, Umit; Aytan, Pelin; 0000-0002-2553-7715; 0000-0003-3249-0895; 0000-0002-9866-2197; AAE-3833-2019; AAK-8394-2021; AAZ-9711-2021; ABC-4148-2020We report a case of isolated tuberculous epididymoorchitis developing in a patient after haematopoietic stem cell transplantation (HSCT). Forty-four-year-old male was admitted to the hospital with scrotal pain and swelling 6 months after an allogeneic HSCT using a fullymatched sibling donor because of his acute myeloid leukemia. There were scrotal tenderness, thickening and erythema on the right side. Brucella standard tube agglutination test was negative. Increased scrotal skin thickening, edema in the right epididymis and increased testicular vascularization were detected on ultrasonography. He was readmitted to our hospital with recurrent scrotal pain after 3 months of partial improvement with oral ciprofloxacin administered for a diagnosis of right epididymoorchitis. Pelvic magnetic resonance imaging revealed bilateral epididymoorchitis and scrotal abscess. Acid fast bacilli were detected on Ehrlich-Ziehl-Neelsen staining of the content of abscesses drained under local anesthesia. Mycobacterium tuberculosis complex was isolated on the 24th day of quadruple anti-tuberculosis therapy. Scrotal fistula developed on the first month of therapy which healed spontaneously after discontinuation of immunosuppressive agents. Full recovery was achieved after six months of antituberculosis therapy. As a result, tuberculous epididymoorchitis should be kept in mind in the presence of chronic epididymoorchitis developing in patients receiving immunosuppressive therapy.Item Effectiveness of Visual Methods in Information Procedures for Stem Cell Recipients and Donors(2017) Gereklioglu, Cigdem; Sariturk, Cagla; Konur, Asli; Asma, Suheyl; Yeral, Mahmut; Solmaz, Soner; Buyukkurt, Nurhilal; Tepebasi, Songul; Kozanoglu, Ilknur; Boga, Can; Ozdogu, Hakan; 0000-0002-0895-4787; 0000-0002-5086-5593; 0000-0002-5268-1210; 0000-0002-8902-1283; 0000-0001-5335-7976; 0000-0002-9680-1958; 0000-0002-9580-628X; 27476890; ABC-4148-2020; AAE-1457-2021; AAS-7129-2021; AAD-5616-2021; AAD-6222-2021; AAE-1241-2021; AAL-6544-2020; AAI-7831-2021Objective: Obtaining informed consent from hematopoietic stem cell recipients and donors is a critical step in the transplantation process. Anxiety may affect their understanding of the provided information. However, use of audiovisual methods may facilitate understanding. In this prospective randomized study, we investigated the effectiveness of using an audiovisual method of providing information to patients and donors in combination with the standard model. Materials and Methods: A 10-min informational animation was prepared for this purpose. In total, 82 participants were randomly assigned to two groups: group 1 received the additional audiovisual information and group 2 received standard information. A 20-item questionnaire was administered to participants at the end of the informational session. Results: A reliability test and factor analysis showed that the questionnaire was reliable and valid. For all participants, the mean overall satisfaction score was 184.8 +/- 19.8 (maximum possible score of 200). However, for satisfaction with information about written informed consent, group 1 scored significantly higher than group 2 (p=0.039). Satisfaction level was not affected by age, education level, or differences between the physicians conducting the informative session. Conclusion: This study shows that using audiovisual tools may contribute to a better understanding of the informed consent procedure and potential risks of stem cell transplantation.Item Use of Plerixafor to Mobilize a Healthy Donor Infected with Influenza A(2018) Yeral, Mahmut; Aytan, Pelin; Boga, Can; 0000-0002-2553-7715; 0000-0002-9680-1958; 0000-0002-9580-628X; 0000-0002-8902-1283; 29391335; ABC-4148-2020; AAD-6222-2021; AAE-3833-2019; AAD-5542-2021