Prof. Dr. Sema Aktaş

Prof. Dr. Sema Aktaş is a specialist in organ transplantation (general surgery) with experience in diagnosing and treating a wide range of conditions related to this field. She provides care at İstinye University Gaziosmanpaşa Hospital, focusing on accurate medical management in line with the latest clinical practices to support patient health and quality of life.

Education

1993-1999: Osmangazi University, Faculty of Medicine
2003-2008: Ankara Başkent University, Faculty of Medicine, Department of General Surgery

Professional Experience

2017: Associate Professor Doctor, Medipol University, Faculty of Medicine
2022: Professor Doctor, Yeni Yüzyıl University, Faculty of Medicine
2010-2012: Başkent University, Faculty of Medicine, Department of General Surgery
2012-2013: Private Gaziosmanpaşa Hospital
2013-2017: Medipol University, Faculty of Medicine, Department of General Surgery
2017-2025: Yeni Yüzyıl University, Faculty of Medicine, Department of General Surgery
2025: İstinye University Gaziosmanpaşa Hospital

Foreign Language

English

Professional Memberships

Turkish Surgical Association
Turkish Medical Association
Turkish Transplantation Society

A. Articles Published in International Peer-Reviewed Journals

A1. R. Emiroğlu, Ö. Başaran, S. Pehlivan, F.N. Özdemir, T. Çolak, G. Moray, T. Noyan, M. Haberal. Effect of Amyloidosis on Long-Term Survival in Kidney Transplantation. Transplant Proc. 2005;37:2967-8.
A2. Karakayali H, Pehlivan S, Ekici Y, Sevmis S, Colak T, Ozdemir N, Haberal M. Acute Rejection Rates and Survival of Renal Transplant Recipients With Alport’s Syndrome. Transplant Proc. 2008 Jan-Feb;40(1):120-2.
A3. Sevmis S, Pehlivan S, Shabazov R, Karakayali H, Ozcay F, Haberal M. Posttransplant lymphoproliferative disease in pediatric liver transplant recipients. Transplant Proc. 2009 Sep;41(7):2881-3.
A4. Sayin B, Karakayali H, Colak T, Sevmis S, Pehlivan S, Demirhan B, Haberal M. Conversion to sirolimus for chronic allograft nephropathy and calcineurin inhibitor toxicity and the adverse effects of sirolimus after conversion. Transplant Proc. 2009 Sep;41(7):2789-93.
A5. Karakayali H, Pehlivan S, Yagmurdur MC, Savas N, Coskun M, Tarhan C, Haberal M. Effect of graft type on postoperative liver function recovery in living liver donors. Transplant Proc. 2009 Sep;41(7):2855-9.
A6. Aydogan C, Sevmis S, Aktas S, Karakayali H, Demirhan B, Haberal M. Steroid-resistant acute rejections after liver transplant. Exp Clin Transplant. 2010 Jun;8(2):172-7.
A7. Karakayali H, Aktas S, Karakayali FY, Yildirim AE, Sevmis S, Moray G, Haberal M. Factors associated with hyperbilirubinemia after living donor hepatectomy. Transplant Proc. 2011 Mar;43(2):427-30.
A8. Aktas S, Colak T, Baskin E, Sevmis S, Ozdemir H, Moray G, Karakayali H, Haberal M. Comparison of basiliximab and daclizumab with triple immunosuppression in renal transplantation. Transplant Proc. 2011 Mar;43(2):453-7.
A9. Aktas S, Boyvat F, Sevmis S, Moray G, Karakayali H, Haberal M. Analysis of vascular complications after renal transplantation. Transplant Proc. 2011 Mar;43(2):557-61.
A10. Karakayali H, Sevmis S, Boyvat F, Aktas S, Ozcay F, Moray G, Arslan G, Haberal M. Diagnosis and treatment of late-onset portal vein stenosis after pediatric living-donor liver transplantation. Transplant Proc. 2011 Mar;43(2):601-4.
A11. Sevmis S, Aktas S, Zia HH, Atiq A, Akbas E, Selcuk H, Karakayali H, Haberal M. Long-term results of hepatitis B immunoglobulin and lamuvidine for hepatitis B prophylaxis after liver transplantation. Transplant Proc. 2011 Mar;43(2):598-600.
A12. Aktas S, Karakayali H, Moray G, Haberal N, Bilezikci B, Haberal M. Long-term results of incidental hepatocellular carcinoma after liver transplant. Exp Clin Transplant. 2011 Jun;9(3):187-90.
A13. Aktas S, Sevmis S, Karakayali H, Ozcay F, Coskun M, Bilezikci B, Haberal M. Acute appendicitis after diaphragmatic hernia after pediatric liver transplant. Exp Clin Transplant. 2011 Feb;9(1):63-7.
A14. Aktas S, Karakayali H, Moray G, Ozdemir H, Haberal M. Effects of risk factors and Ki-67 on rates of recurrence on patients who have undergone liver transplant for hepatocellular carcinoma. Transplant Proc. 2011 Dec;43(10):3807-12.
A15. Ozer O, Bilezikci B, Aktas S, Sahin FI. Methylation profile analysis of DNA repair genes in hepatocellular carcinoma with MS-MLPA. Diagn Mol Pathol. 2013 Dec;22(4):222-7. doi: 10.1097/PDM.0b013e31828ed856.
A16. Aktaş S, Sevmiş S, Özgür S, Erol C, Karakayalı H. Four separate hepatic vein reconstructions in the right lobe living donor liver transplantation: A case report. Transplantation Proceedings. 2015 Dec;47(10):3020-2. doi: 10.1016/j.transproceed.2015.10.047.
A17. Özyüksel A, Aktaş S, Çalış E, Erol C, Sevmiş S. Ex Vivo Resection and Renal Autotransplantation for the Treatment of a Large Renal Vein Aneurysm Causing Recurrent Pulmonary Embolism and a Coexisting Vascular Malformation: A Case Report. Vasc Endovascular Surg. 2016 Aug;50(6):415-20. doi: 10.1177/1538574416655893.
A18. Murat Sevmis, Ozkan Onuk, Sema Aktas, Utku Alkara, Ozgur Merhametsiz, Sinasi Sevmis. Two Renal Transplants From Living Donors With Horseshoe Kidneys. Urology. 2020 Jul;144:230-233.
A19. Sevmis M, Sevmis S, Aktas S, Khalilov M, Demir ME. Kidney Transplantation From Donors with Resectable Renal Cell Carcinoma: Two Case Reports. Transplant Proc. 2020 Apr;52(3):737-739. doi: 10.1016/j.transproceed.2020.01.014.
A20. Sevmis M, Aktas S, Alkara U, Kilercik H, Uyar M, Sevmis S. Risk Factors, Diagnosis, and Treatment of Lymphocele After Renal Transplantation: A Retrospective Study. Transplant Proc. 2021 Apr;53(3):1040-1047. doi: 10.1016/j.transproceed.2021.01.028.
A21. Sevmis M, Demir ME, Merhametsiz O, Aktas S, Sevmis S, Uyar M. Grafts With Multiple Renal Arteries in Kidney Transplantation. Transplant Proc. 2021 Apr;53(3):933-940. doi: 10.1016/j.transproceed.2020.07.019.
A22. Sevmis M, Kilercik H, Aktas S, Alkara U, Demir ME, Sevmis S. Results of Haberal’s Corner-Saving Ureteral Anastomosis Technique for Renal Transplantation: A Retrospective Study. Transplant Proc. 2021 Apr;53(3):814-817. doi: 10.1016/j.transproceed.2020.10.019.
A23. Demir ME, Merhametsiz Ö, Yurttutan Uyar N, Uyar M, Sevmis M, Sevmis S, Aktas S, Hacisalihoglu UP, Baba ZF. COVID-19 Disease in a Kidney Transplant Recipient With Diffuse Intrarenal Hemorrhage. Exp Clin Transplant. 2021 Jun 17. doi: 10.6002/ect.2020.0529.
A24. Mehmet Emin Demir, Murathan Uyar, Özgur Merhametsiz, Murat Sevmiş, Sema Aktaş, Şinasi Sevmiş. Outcomes of mTORi-involving minimized immunosuppression protocols in renal transplantation. J Health Sci Med. 2021;4(1):71-77.
A25. Özgür Merhametsiz, Mehmet Emin Demir, Murat Sevmiş, Murathan Uyar, Sema Aktaş, Şinasi Sevmiş. First-year mortality in living donor kidney transplantation: Twelve-year experience from a single center. J Health Sci Med. 2021;4(3):252-256.
A26. Zarbaliyev E, Sevmiş M, Kilercik H, Çelik S, Aktaş S, Çağlıkülekçi M, Sevmiş Ş. Is the incision type important for the development of hernia in liver transplant patients? Clin Transplant. 2022 Jan;36(1):e14497. doi: 10.1111/ctr.14497.
A27. Aktas S, Alkara U, Sevmis M, Kilercik H, Yıldız H, Sevmis S. Analysis of Hepatic Arterial Reconstruction Technique Using Surgical Loupes for Living-Donor Liver Transplantation: Results From a Single Center. Transplant Proc. 2021 Dec;53(10):2929-2933. doi: 10.1016/j.transproceed.2021.09.024.
A28. Sevmis M, Aktas S, Alkara U, Kilercik H, Göksoy HS, Uyar M, Sevmis S. Sequential Liver, Kidney, and Autologous Stem Cell Transplant for AL Amyloidosis: A Case Report. Transplant Proc. 2022 Jan-Feb;54(1):197-201. doi: 10.1016/j.transproceed.2021.11.009.
A29. Sevmis M, Zarbaliyev E, Yildiz H, Alkara U, Aktas S, Sevmis S. Factors Affecting Bile Complications After Liver Transplantation: Single-Center Experience. Sisli Etfal Hastan Tip Bul. 2022 Jun 28;56(2):227-231.
A30. Sevmiş M, Zarbaliyev E, Yıldız H, Alkara U, Aktaş S, Sevmiş Ş. Asymptomatic synthetic vascular graft migration to duodenum after living donor liver transplantation: Report of two cases. Acta Chir Belg. 2023 Apr;123(2):195-198.
A31. Kilercik H, Akbulut S, Elsarawy A, Aktas S, Alkara U, Sevmis S. Factors Affecting Intraoperative Blood Transfusion Requirements during Living Donor Liver Transplantation. J Clin Med. 2024 Sep 27;13(19):5776.
A32. Kilercik H, Akbulut S, Aktas S, Alkara U, Sevmis S. Effect of Hemodynamic Monitoring Systems on Short-Term Outcomes after Living Donor Liver Transplantation. Medicina (Kaunas). 2024 Jul 16;60(7).
A33. Elsarawy A, Akbulut S, Aktas S, Kilercik H, Alkara U, Sevmis S. Living donor liver transplantation for patients with portal vein thrombosis: High-volume single center experience. Eur Rev Med Pharmacol Sci. 2024 Jun;28(11):3752-3760.
A34. Kilercik H, Akbulut S, Elsarawy A, Aktas S, Alkara U, Sevmis S. Effect of Complex Venous Outflow Drainage Reconstruction on Postoperative Graft Function in Right-Lobe Living Donor Liver Transplantation. J Clin Med. 2025 Mar.

D. Articles Published in National Peer-Reviewed Journals

D1. Y. Ekici, S. Pehlivan, FY. Karakayalı, Ş. Sevmiş, MC. Yağmurdur, G. Moray, M. Haberal. Effectiveness of subtotal parathyroidectomy in the treatment of secondary hyperparathyroidism: Results from a single center. Ulusal Cerrahi Dergisi. 2007 Jun;23(2):41-45.
D2. Feza Karakayalı, Yahya Ekici, Şinasi Sevmiş, Sema Pehlivan, Zübeyde Arat, Gökhan Moray. The Gail model for breast cancer risk assessment. Ulusal Cerrahi Dergisi. 2007 Oct-Nov;23(4):129-135.
D3. Sema Aktaş, Aydıncan Akdur, Gökhan Moray, Mehmet Haberal. Gastrointestinal perforations following pediatric liver transplantation. Ulusal Cerrahi Dergisi. 2012;28(1):34-37.
D4. Aktaş S, Sevmiş S, Şeker M, Korkut E, Karakayalı H. Analysis of risk factors affecting coagulopathy after donor hepatectomy in a newly established liver transplant center. Turk J Surg. 2017 Jun 1;33(2):69-75. doi: 10.5152/turkjsurg.2017.3352.
D5. Özgür MERHAMETSİZ, Murathan UYAR, Mehmet Emin DEMİR, Murat SEVMİŞ, Sema AKTAŞ, Şinasi SEVMİŞ. Does Diltiazem Provide Benefits on Allograft Functions in Kidney Transplant Recipients? Journal of Harran University Medical Faculty. 2020;17(3):425-430. doi: 10.35440/hutfd.815458.