PROF.DR.NURDAN TÖZÜN’ÜN BİLİMSEL  ÇALIŞMALARI
BİLİMSEL YAYINLARI
1.  Uluslararası  hakemli dergilerdeki yayınlar:
1,The  effect of chronic guanfacİne administration on high plasma vasopressin levels  in essential hypertension.
         Berkman, K., Tözün, N., Taga,  Y., Dedeoğlu, A., Onat, F., Bekiroğlu, N.
         Int J Pharmacol Ther Toxıcol 28:  67-71,1990.
2.Effect of diltiazem  on renal functions in patients with liver cirrhosıs.
           Tözün,  N., Berkman, K.,  Tankurt, E., Kalaycı, C., Özdoğan, O., Aran, S.,Taga,Y.
         Int J Clin Pharmacol Ther Toxıcol  29: 208-213, 1991.
3.Safety  of alcohol after viral hepatitis.
         Tözün, N., Forbes, A.,  Anderson, M.G., Murray-Lyon, I.M.
         Lancet 337: 1079-1080, 1991.
4.Cerebral  echinococcosis multilocularis: Case report.
         Pamir, MN., Özer AF., Keleş GE., Tözün  N., Gürmen N., Küllü S.
         J.Neurosurg Sci 35: 161-164, 1991.
5..Endoscopic  removal of swallowed endotracheal tubes from two patients. An 
    unusual  complication of coronary by-pass surgery.
         Kalaycı C., Tözün n., Ulusoy  N.B.
         Endoscopy 26: 364, 1994.
6. The effect  of endothelin-1 on vena jugularis thrombus model in rabbits
         Ulutin  T,Bayram C,Okar I,Ozluk K,Tözün N,Ulutin ON
         J Basic Clin Physiol Pharmacol 1995;6:296-302
7.Refractory  duodenal ulcer healing and relapse: Comparison of omeprazole versus
  helicobacter pylori eradication.
         Avşar E., Kalaycı C., Tözün N.,  Gültekin O., Kızıltaş Ş., Ulusoy N.B.
         Eur J Gastroenterol 1996 8: 449-452.
8.Clostridium  Difficile acquisition rate and its role in nosocomial diarrhea at a 
   University Hospital in Turkey.
         Söyletir G., Eskitürk A., Kılıç G.,  Korten V., Tözün N.
         Eur J Epidemiol 12: 391-394, 1996.
9.Toothpick  impaction: treatment by colonoscopy
         Över H., Tözün N., Avşar E.
         Endoscopy 29: 560-561, 1997.
10.Long  term efficacy of Interferon alpha and Ursodeoxycholic Acid in the treatment 
    of chronic  type C hepatitis.
         Şentürk H., Uzunalimoğlu Ö., Batur  Y., Şimşek I and Tözün N.
         Dig Dis Sci 42: 1438-1444, 1997.
11.Successful treatment of polyarteritis nodosa related to hepatitis B  virus 
     with interferon alpha as first line therapy.
         Avşar E., Savaş B., Tözün N.,  Ulusoy N., Kalaycı C.
         J Hepatol 28: 525-26, 1998.
12. Thrombophylia  and Inflammatory Bowel Disease:does Factor V Leiden 
      mutation have a role ? 
         Över Hamzaoğlu H Ülgen S.,.,  Tuğlular T., Avşar E., Kalaycı C., Tözün N.
         Eur J Gastroenterol Hepatol 1998  ;10: 827-9.
13.The distribution  of HLA-DRB alleles in ulcerative colitis patients in Turkey
         Uyar  FA,Imeryüz N, Dreskeneli Çeken H,Özdoğan O,Tözün N
         J  Immunogenetics  1998; 25:293-296
14.Influence of the metabolic complications of liver cirrhosis  on dietary intake
         Tözün N
         Med Sci  Monit 2000; 6:46-50 
15.Risk factors for hepatocellular carcinoma in Turkey
         Uzunalimoğlu Ö,Yurdaydın  C,Çetinkaya H,Bozkaya H,Şahin T,Çolakoğlu S,
         Tankurt E, Sarıoğlu M,Özenirler  S,Akkız H,Tözün N, Değertekin H,Ökten A
         Dig Dis Sci 2001,46:1022-1028
16.Role of Endothelin in a cirrhotic rat model with  endotoxin induced acute renal failure.
         Özdoğan O,Gören Z,Ratip S,Giral A ,Bilsel  S,. Moini H,Enç ,FBerkman K and Tözün N
         Hepatology Research,2002,  24:114-124
17.Clinical and epidemiological data on Inflammatory bowel  disease, colorectal 
     cancer  and  helicobacter pylori infection in Turkey (Invited Review)
         Tözün N
         Ann of Gastroenterol  2002,15:364-371
18. Epidemiology of Viral hepatitis in the Mediterranean  basin
         Tözün N
         Iatriki  2002,6:21-31
19.Causes and risk factors for liver injury following bone  marrow transplantation 
         Özdoğan O,Ratip  S,Al -Ahdab Y, Dane F,Al-Ahdab H,İmeryüz N,Tözün N
         J Clin Gastroenterol ,2003: 36:421-26
20.Clinical outcome of Crohn’s disease treated with  Infliximab
         Arslan S,Kav T,Beşışık  F,Kaymakoğlu S,Pınarbaşı B,Tözün N, Hamzaoglu H,
         Duman D,Ülker A,Parlak  E,Palabıyıkoğlu M,Dökmeci A
         Hepatogastroenterology  2003,50:952-956
21. Antral  hyperplastic polyp causing intermittent gastric outlet obstruction: Case  report.
         Gencosmanoglu  R, Sen-Oran E, Kurtkaya-Yapicier O, Tozun N.
         BMC Gastroenterol. 2003 Jun 27;3(1):16. 
   
22.  Percutaneous endoscopic  gastrostomy: results of 115 cases.
         Gencosmanoglu  R, Koc D, Tozun N.
         Hepatogastroenterology. 2003  May-Jun;50(51):886-8. 

23.  Effects of selective COX-2  inhibitors on the gastric permeability of sucrose: a
         controlled study with placebo and ibuprofen.
         Ekenel  M, Avsar E, Imeryuz N, Yuksel M, Haklar G, Kocakaya O, Tozun N.
         Eur J Gastroenterol Hepatol.  2003 Apr;15(4):403-6.
24. Gastric polypoid lesions: Analysis of 150 endoscopic polypectomy  specimens 
      from 91 patients
         Gencosmanoglu R, Sen-Oran E,  Kurtkaya-Yapicier O, Avsar E, Sav A,Tozun N. 
         World J Gastroenterol 2003 ;9:2236-2239
25.Adrenomedullin  in cirrhotic and non cirrhotic portal hypertension
         Tahan V,Avsar E,Karaca Ç,Uslu E,eren F,Aydın S, Uzun  H,
         Hamzaoglu HO,Beşışık F,Kalaycı C,Ökten A, Tözün N
         World J Gastroenterol 2003 ;9:2325-2327
26.  Epidemiology of viral hepatitis in the Mediterranean basin.   
         Tahan V,Ozdogan O,Tözün N 
         Rocz Akad Med Bialymst. 2003;48:11-7. Review.
27.The  Buried Bumper Syndrome:Migration of the internal bumper of  percutaneous 
         endoscopic gastrostomy tube into the  abdominal wall;case report. 
         Gencosmanoglu R, Koc D, Tozun N.    
         J Gastroenterol. 2003;38(11):1077-80.
28..Xantelasmas  of the upper GI tract
         Gencosmanoglu  R, Sen-Oran E, Kurtkaya-Yapicier O, Tozun N.
         J Gastroenterol
29. Bouveret’s syndrome complicated by a distal gallstone ileus: case report
         Gençosmanoğlu R, İnceoğlu  R, Baysal Ç, Akansel S, Tözün  N 
         World J Gastroenterol 2003  Dec;9(12):2873-5.  
30.  The utility of cytokeratins 7 and 20 (CK7/20) immunohistochemistry in the  distinction 
       of short-segment Barrett esophagus from gastric intestinal  metaplasia: Is it reliable?
       Kurtkaya-Yapicier  O, Gencosmanoglu R, Avsar E, Bakirci N, Tozun N, Sav A.
         BMC Clin Pathol. 2003 Dec 2;3(1):5. 
31.  Anti-HCV Seroprevalence in Chronic HCV Patients' Children in Turkey.
         J Clin Gastroenterol. 2004 Jan;38(1):90-1
32.  Prothrombotic gene mutations and Crohn’s disease ;Is there any association ?
         Over  H,Abacı N,Türe F,Alkın C,Tezel A,Tözün 
         Hepatogastroenterology. 2005 Sep-Oct;52(65):1467-9. 
33. Oral  glucose tolerance deteriorates in rats fed with methionine choline deficient  diet. 
         Tahan V,  Yavuz D, Imeryuz N, Avsar E, Tozun N.
         J Hepatol.  2004 Aug;41(2):352; 
34.  Mid-esophageal ulceration and  candidiasis-associated distal esophagitis as two 
       distinct clinical patterns of  tetracycline or doxycycline-induced esophageal injury.
         Gencosmanoglu  R, Kurtkaya-Yapicier O, Tiftikci A, Avsar E, Tozun N, Oran ES.
         J Clin Gastroenterol. 2004 Jul;38(6):484-9. 
35. Effect  of Helicobacter pylori eradication on anti-thrombotic dose aspirin-induced  
      gastroduodenal mucosal injury. 
         Giral A,  Ozdogan O, Celikel CA, Tozun N, Ulusoy NB, Kalayci C.
         J  Gastroenterol Hepatol. 2004 Jul;19(7):773-7. 
36. The  prevalence of hepatic granulomas in chronic hepatitis C.
         Ozaras R,  Tahan V, Mert A, Uraz S, Kanat M, Tabak F, Avsar E,
         Ozbay G, Celikel CA, Tozun  N, Senturk H. 
         J Clin  Gastroenterol. 2004 May-Jun;38(5):449-52. 
37. Xanthelasmas  of the upper gastrointestinal tract.
         Gencosmanoglu  R, Sen-Oran E, Kurtkaya-Yapicier O, Tozun N 
         J  Gastroenterol. 2004;39(3):215-9. 
38.  Botulinum toxin injection versus lateral  internal sphincterotomy in the treatment 
       of chronic anal fissure: a non-randomized  controlled trial.
         Giral A, Memisoglu K, Gultekin Y, Imeryuz N,  Kalayci C, Ulusoy NB, Tozun N. 
         BMC  Gastroenterol. 2004 Mar 22;4(1):7. 
39. The  efficacy, safety and tolerability of pantoprazole-based one-week triple 
      therapy  in H. pylori eradication and duodenal ulcer healing.
         Sivri B,  Simsek I, Hulagu S, Kadayifci A, Tozun N, Akarsu M, 
         Uraz S, Savas MC, Koruk M,  Bozbas A.
         Curr Med  Res Opin. 2004 Aug;20(8):1301-7. 
40.  Hepatology issues in Asia:Perspectives from regional leaders
         Khan M,Dong  JJ,AcharyaSK,Dhagwadorj Y,Abbas Z,Jafri W SM,
         Mulyono DH,Tozun N, Sarin SK
         J  Gastroenterol Hepatol 2004 ;19: S419-S430
41. Sexual  transmission of HCV between spouses.
         Tahan V,  Karaca C, Yildirim B, Bozbas A, Ozaras R, Demir K, Avsar E, Mert A, 
         Besisik F,  Kaymakoglo S, Senturk H, Cakaloglu Y, Kalayci C, Okten A, Tozun N.
         Am J  Gastroenterol. 2005 Apr;100(4):821-4.
42.  Octreotide in liver cirrhosis: a salvage for  variceal bleeding can be a gunshot for kidneys
         Guney Duman  D, Tuney D, Bilsel S, Benli F, Karan S, Avsar E, Ozdogan O, Tozun 
         Liver Int.  2005 Jun;25(3):527-38. 
43.  Prothrombotic gene mutations and Crohn’s disease ;Is there any association ?
         Over  H,Abacı N,Ture F,Alkın C,Tezel A, Tozun N
         Hepatogastroenterology  October 2005,52:1467-1469
44. Impact  of Helicobacter pylori eradication on the anti-secretory efficacy of  lansoprazole 
     in gastroesophageal reflux disease patients.
         Giral A,  Celikel CA, Ozdogan O, Tozun N, Ulusoy NB, Kalayci C.
         J  Gastroenterol Hepatol. 2005 Dec;20(12):1886-91
45.  Computed tomography in nonalcoholic fatty liver disease: a useful tool for  
       hepatosteatosis assessment?
         Duman DG,  Celikel C, Tüney D, Imeryüz N, Avsar E, Tözün N. 
         Dig Dis  Sci. 2006 Feb;51(2):346-51.  
46.  Distribution of Common CARD15 Variants in Patients with Sporadic 
       Crohn's  Disease: Cases from Turkey.
           Uyar FA, Over-Hamzaoglu H, Ture F, Gul A, Tozun N, Saruhan-Direskeneli 
           G.Dig Dis Sci. 2006  Apr;51(4):706-10.
47.  Epidemiology and Risk Factors in Hepatocellular Carcinoma. 
          Tozün N.  Ann. Gastroenterology. 2005 Apr-June:18 (2):  212-214.
48. Colloid scintigraphy in non-alcoholic  steatohepatitis: a conventional 
     diagnostic method for an emerging disease. 
           Duman DG, Dede F, Akin H, Sen F, Turoglu HT, Celikel C, Tozun N.
         Nucl Med Commun. 2006  Apr;27(4):387-93.
49. Determination  of hepatitis B genotypes in patients with chronic 
     hepatitis B virus infection  in Turkey.
           Ozdemir FT, Duman D, Ertem D, Avsar E, Eren F, Ozdogan O, Kalayci C, 
           Aslan N, Bozdayi AM, Tozun N.Turk J Gastroenterol. 2005 Dec;16(4):183-187. 
Special article
50 . Women  in Gastroenterology, Turkey
         World  Gastroenterology News  vol 8:33-35, 2003
 
2.. Uluslararası  Konferanslarda sunulan sözlü bildiriler
1.Diagnostic  value of peritoneoscopy in exudative ascites.
         Ökten, A., Tözün, N., Yıldır,  C., Yalçın, S., Ulagay, I.
         The world Congress of Gastroenterology, 7th  Congress, June 14-19, 1982,    
         Stockholm,  Sweden Abstract No: 11.
2.Enzymatic  and ultrastructural alterations of jejunal mucosa in relation to giardiasis.
         Erol, N., Erbengi, T., Sezr, R.,  Canberk, Y., Yeğinsu, O., Yıldır, C., Tözün, N.
         The World Congress of  Gastroenterology, 7th Congress, June 14-19, 1982, 
         Stockholm, Sweden Abstract No: 652.
3.Congenital  cystic disease of the liver.
         Tözün, N., Ökten, A.,  Yeğinsu, O., Yıldır, C., Özdil, S., Gürakar, M.
         IV.Seminar über Leberkrankheiten,  I.Seminar über Ultraschalldiagnostik in der 
         Gastroenterologie, İstanbul, Juni  18-19, 1982, Abstract p.33-34.
4.The  importance of high protein and calorie intake in cases of Crohn’s disease  
   with  growth retardation.
         Erol, N., Sezer, R., Tözün, N.,  Yeğinsu, O.
         IV.Asian Congress on Nutrition, November 1-4, 1983, Bangkok,  
         Thailand, Abstract Book, p. 212.
5.Splenic  vein thrombosis.
         Ökten, A., Emre, A., Yalçın, S.,  Arıoğul, O., Yeğinsu,O., Tözün, N., Ulagay, I.
         Hepato-Pancreatico-Biliary Surgery,  First World Congress, Lund, Sweden, 
         June  9-13 1986, Abstract No: 211.
6.Relation  between plasma protein C activity and thrombus formation in cases of 
   presinusodial portal hypertension.
         Tözün, N., Ökten, A.,  Yardımcı, T.
         VII. International Congress of Liver Diseases, Basel Liver  Week, October 16-  18 1986,
         Poster Abstracts, No: 280.
7.The  effect of guanfacine on high plasma vasopressin levels in patients with  essential hypertension.
         Berkman, K., Tözün, N., Taga,  Y., Oral, U.
         Euro J Clin Pharma 36: A209, 1989.
         Europ.  Congress of Pharmacology, Mannheim Heidelberg  July 23-28, 1989.
8.The  effect of captopril on plasma vasopressin levels in essential hypertension.
         Berkman, K., Tözün, N., Taga,  Y., Oral, U.
         XIe Session des Journées Médicales  Balkaniques, 25-27 Mai 1989, İstanbul, 
         Résumés p.117.
9.The  central/portal blood ratio of carcinoembryogenic antigen levels in patients  with colorectal cancer.
         Yalın, R., Yeğen, C., Aktan, Ö.,  Güllüoğlu, BM, Tözün, N.
         XVth Biennial Congress of  International Society of University colon and rectal 
         surgeons, 2-6 July 1994, Singapore,  Abstract Book. s.266.
10.The effect of  endothelin-1 on vena jugularis thrombus model in rabbits.
         Bayram, Ç., Ulutin, T., Okar, I.,  Özlük, Tözün, N., Ulutin, ON.
         First  International Meeting on Pharmacy and Pharmaceutical Sciences, 4-7   Sept 1994,
         İstanbul ,Abstract Book. s.247.
11.Epidemiology  of inflammatory bowel diseases in Turkey 
         N.Tözün
         Workshop of Mediterranean Medical Society IBD group 27 April  1998 İstanbul.
12.  Amebic colitis versus ulcerative colitis
         7th United European Digestive Disease  Week ,Roma November 12-15 1999
         Gut 1999;45 S:74 (Lecture notes )
13.   Epidemiology of HCV in the Eastern  Mediterranean Region
         Tözün N
         Innovations in the  management of HCV infection
         Monte Carlo, 3rd-5th  February 2003
         Abstract Book p 15
15.Pregnancy and the liver 
         Tözün N ,Akın H
         15th ASİAN Pasific  Association for the Study of the Liver,,August 18-21,2005
         Liver İnternational  1821/VIII, p 64-66
3. Uluslararası konferanslarda  sunulan poster tebliğler 
1.Endoscopic  findings in symptomatic patients after operation for peptic ulcer.
         Sezer, R., Erol, N., Yeğinsu, O.,  Yıldır, C., Özdil, S., Tözün, N.
         The World Congress of Gastroenterology, 7th  Congress, June 14-19, 1982,  
         Stockholm,Sweden Abstract No:340.
2.Synchronous and  metachronous polyps in patients with colorectal carcinoma.
         Tözün, N., Ulusoy, N. B.,  Kalaycı, C.
         Holland Digestive Disease Week, Amsterdam, 21-24 June 1989,  Abstract  No:119
3.Refractory  duodenal ulcer healing and relapse: Comparison of omeprazole versus  
   helicobacter pylori eradication.
         Avşar, E., Kalaycı, C., Tözün, N.,  Gültekin, O., Kızıltaş, Ş., Ulusoy N. B.
         Digestive Disease Week, May 9-12, Boston, 1994      Gastroenterology 1994;106: A42
4.Does  eradication of H.Pylori reduce low dose aspirin induced gastrodoudenal
         injury ?
         Giral, A., Özdoğan, O., Çelikel, Ç.,  Ulusoy NB, Tözün, N., Kalaycı, C.
         Gastroenterology 1997;117:127.
5.Endothelin-1  in hepatorenal syndrome: Is Endothelin antagonist (Bosenthan) effective ?
         Özdoğan, O., Tözün, N., Gören, Z., Moini, H.,  Kızıltaş, Ş., Çelikle, Ç.,  Berkman, K.
         EASL Congress 9-12 April 1997,  London
         J Hepatol 26 (suppl): 100, 1997.
6.Factor  V Leiden mutation in inflammatory bowel disease.
         Ülgen, SK., Hamzaoğlu, H., Tuğlular,  T., Avşar, E., Kalaycı, C., Tözün, N.
         V International symposium on  inflammatory bowel diseases Falk symposium No:101, 
         Jerusalem, September 22-24,  1997, Abstracts. No:53.
7.Relation  of  HGV to Non-Hodgkin’s Lymphoma.
         Ülgen, SK., Sayhan,  N., Büyükbeşe, M., Geyik, G., Akdoğan, M.,  Şentürk, H., 
         Kalaycı, C., Tözün, N.
         International  symposium on viral hepatitis and pespectives from the Asean  region, 
         10-12  September  1997, Bangkok, Thailand  Syllabus and Abstracts. P.85.
8. Hepatitis B and C  serology by Turks living in Germany. A comparison to Turkey and   
    Germany in view of migration.
         Akıncı, A., Şen, C., Bilgin, Y.,  Erkal, MZ., Geyik, G., Tözün, N., Klör, UH.
         Postgraduate Course of  European Association for the Study of the  Liver, 
         26  June 1998, İstanbul, Abstracts p.122.
9. Association  of HGV in Ankylosing spondilitis.
         Başgül,  S., Ülgen, SK., Sayhan, N., Geyik, G., Fresko, E., Demiralp, E., Direskeneli,
         H., Sonsuz, A., Gül, A., Aral, A.,  Yazıcı, H., Tözün, N., Kalaycı, C.
         Postgraduate Course of European  Association for the Study of the Liver, 
         26  June 1998, İstanbul, Abstracts p.144.
9. Chromoendoscopy  for diminutıve polyps  of colon 
         Hamzaoğlu  H,Kurtkaya Ö,Avşar E,Giral A,Enç F,Sav A,Tözün N
         !st  Mediterranean Congress,Samos,1998 
10. Etiology of  Hepatocellular carcinoma in Turkey
         Uzunalimoğlu  Ö,Sarıoğlu M,Çetinkaya H,Ökten A,Şahin T,çolakoğlu S,
         Değertekin H,Tankurt E,Tözün  N,Yurdaydın C
         Hepatology  1998 ;28:769A
11. Hepa titis B and  C virus serology.A comparison to Turkey and Germany in view of migration
         Akıncı  A,Bilgin Y,Erkal MZ,Tözün N,Bödecker R,Bretzel G,Klör U 
         33th Congress of European  Association for the Study of the Liver,15-18 April 1998,Lisbon
         Hepatology  1998 ;28:767 A
12.Therapeutic  vaccination with a pre-S2 containing vaccine in chronic hepatitis B:A promising  approach.
         Şentürk  H,Tabak F, Akdoğan M, Mert A, Erdem L, Türkoğlu S, Özbay G, Badur S,Tözün N 
         33th Congress of European  Association for the Study of the Liver,15-18 April 1998,Lisbon
         Hepatology  1998 ;28:588A
13.Thrombophilia in inflammatory bowel disease. 
         Hamzaoğlu H, Ülgen  S,Tuğlular T, Tözün N.
         World Congress of  Gastroenterology,September 6-11,1998 Vienna
         Digestion   1998; 59S;110
14.Hepatitis G infection in patients with Lichen Planus. 
         Avşar E, Ülgen S, Yücelten  D, Tözün N
         World Congress of  Gastroenterology,September 6-11,1998 Vienna
         Digestion  1998; 59S;282
15.Combination of IFN and recombinant vaccine for the treatment of  chronic hepatitis B patients. 
         Enç F, Avşar E. Tözün N 
         Hepatology 30S:645A  1999
16.  Comparison of thrombopoietin levels in patients with  chronic liver disease
         Tuğlular T,Avşar E, Ekenel  M, Uras F,Tözün N
         35th Congress of European  Association for the Study of the Liver,29 April-3 May 2000 Rotterdam
         J Hepatol 2000;32 (suppl  2):149
17. Transfusion  transmitted virus in IVD abusers in Turkey
         Avşar  M,Türe F,Avşar E,Tamar M,Akkiprik M,Geyik G,Hamzaoğlu H,Çırakoğlu B,Tözün N
         35th Congress of European  Association for the Study of the Liver,29 April-3 May 2000 Rotterdam,
         J Hepatol 2000;32 (suppl  2):196 
18. Helicobacter pylori:The bacterium of the millenium
         Tözün N
         6th Mediterranean  Medical Congress & 2nd Mediterranean Summer School
         5-7 September  2000 Malta.Book of Abstracts.p39
19. Hepatitis B:New trends in management
         Tözün N
         6th Mediterranean  Medical Congress & 2nd Mediterranean Summer School
         5-7 September  2000 Malta.Book of Abstracts s.91
20..IBD and the liver:Eastern Mediterranean Experience
         Tözün N
         6th Mediterranean  Medical Congress & 2nd Mediterranean Summer School
         5-7 September  2000 Malta.Book of Abstracts s.98
21.Renal effects of Octreotide in cirrhosis as estimated by duplex  ultrasonography and plasma-urine nitrate levels
         Duman  D, Tüney D,Bilsel S,Avşar E,Tözün N
         6th Mediterranean  Medical Congress & 2nd Mediterranean Summer School
         5-7 September  2000 Malta.Book of Abstracts. S.166
22. Students perception about medical education in Marmara  University School of Medicine
         Kalaça S,Kan  B,Çakın SA, Güney İ,Tözün N
         6th Mediterranean  Medical Congress & 2nd Mediterranean Summer School
         5-7 September  2000 Malta.Book of Abstracts s.194
23.Incidence and risk  factors for liver injury following bone marrow transplantation
         ÖzenY,Ahdab H,Dane F,Özdoğan  O,İmeryüz N, Ratip S,Tözün N
         8th United European Gastroenterology  Week,25-30 November 2000,Brussels
         Gut,2000;47 S:A 172
24.Does amebiasis  cause flare up of inflammatory bowel disease ?
         Güney D,Över U,Hamzaoğlu H,Özdoğan  O,İmeryüz N,Söyletir G,Tözün N
         8th United European Gastroenterology  Week,25-30 November 2000,Brussels
         Gut,2000;47 S:A 224
25.Value of computed  tomography in nonalcoholic steatohepatitis (NASH) .Comparison with liver biopsy
         Duman DG,Tüney D,Çelikel Ç,Avşar  E,Akpınar İ,Bekiroğlu N,Tözün N
         36th Congress of European  Association for the Study of the Liver,18-22 April 2001, Prague
         J Hepatol 2001;34 (suppl  1): p.195
26. Comparison of Botulinum Toxin  Injection and Lateral Internal Sphincterotomy i
      n the Treatment of Chronic Anal  Fissure
         Giral A, Gültekin Y, Memisoglu K,  Parmaksizoglu T,İmeryuz N, Ozdogan O, Kalayci C, 
         Tozun N, Ulusoy N
         Gastrenterology 2002,122:M2045 
27. Topoisomerase I and  II-alpha immunoexpression in metaplastic and neoplastic                           
     gastric mucosa
         Avsar E, Celikel C, Sezgin S, Bozbas  A, Duman D, Hamzaoglu H, Tozun N
         Gut 2002; 51(suppl III) A 199
28.Gastrointestinal  tract cancer in southeastern Europe: A multinational study with the  
     participation of seven countries
         Yurdaydın  C, Krastev Z, Bulajic M, Resuli B, Tsianos E V, Serafimoski V, Zildzic M,  
          Mechkov G, Tözün N,
         Gut  2002; 51(suppl III) A 263
29. Effects of  selective COX-2 inhibitors on gastric permeability: A controlled study with  
      placebo and ibuprofen
         Avsar E, Ekenel M, İmeryüz N, Yüksel  M, Haklar G, Tözün N
         Gut 2002; 51(suppl III) A 312
30.Appendectomy  and inflammatory bowel disease in the Turkish population. 
         Bozbaş  A, Tahan V, Över Hamzaoğlu H, Tozun  N. Falk symposium No 134 Trends 
         and controversies in 
         IBD-Evidence based  approach or individual management. P90,   2003 Berlin-Almanya    
31.Seasonal  influence in exacerbations of inflammmatory bowel disease. Falk symposium 
     No  134 Trends and controversies in IBD-Evidence based approach or individual  management. 
         Yılmaz  M, Tahan V, Bozbaş A, Hamzaoğlu HO, Tozün N 
         P  53, 2003 Berlin-Almanya   

32.Role of  transforming growth factor beta-1   in course of chronic hepatitis C infection.
     Bozbas  A, Eren F, Tahan V, Duman D, Tiftikci A, Tozun N                                      
     CTC & EASGLD-            Inauguration             Conference 2004; abstract 158
         
33The prevalence of hepatic  granulomas in chronic hepatitis C
         Ozaras R, Tahan V,Mert A Tabak  F,Avsar E,Ozbay G,Celikel C,Tözün N
         Senturk H
         13th European Congress of Clinical  Microbiology and Infectious Diseases. 
         10-13 May, 2003, Glasgow, UK
         Clinical Microbiology and Infection  2003,9: suppl 1,279
34.Assessment of nutrition in liver  cirrhosis
         Tasan G, Tozun N Tahan V, Enc F,  Giral A ,Imeryuz N, Avsar E, Kalayci C
        38Th Meeting of the European  Assocation for the Study of the Liver,Geneva 
        July 2nd -6 th, 2003 , J Hepatol  2003, suppl 2: 201
         
35.Sexual Transmission of HCV  between spouses
         Tahan V, Karaca Ç,Yıldırım B,Bozbas  A, Demir K,Avşar E, Mert A,Tabak F, 
         Beşışık F,Kaymakoglu S,Cakaloglu Y, Kalayi  C,Okten A, Tozun N
         38Th Meeting of the European  Assocation for the Study of the Liver,Geneva 
         July 2nd -6 th, 2003 , J Hepatol  2003, suppl 2: 176
         
36.Rosiglitazone attenuates Liver  Inflammation In A Rat Model Of Non-Alcoholic Steatohepatitis
         Tahan V, Eren F, Yavuz D, Emekli E,  Yuksel M , Goren Z, Celikel C, Haklar G, 
         Avsar  E, Tozun N
         38Th Meeting of the European  Assocation for the Study of the Liver,Geneva July 
         2nd -6 th, 2003 , J Hepatol  2003, suppl 2:202
         
37.Clinical and demographic  characteristics of patients with non alcoholic steatohepatitis.
     A multicenter  study
         Sarıoğlu MK,Akarca S, Sonsuz A,  Duman D,Tankut E, Degertekin      
         H,Suleymanlar I, Tozun N,Yurdaydin C,Uzunalimoglu O
         38Th Meeting of the European  Assocation for the Study of the Liver,Geneva   
         July 2nd -6 th, 2003 , J Hepatol 2003, suppl 2:200
         
38.Adrenomedullin: A Trigger or  Bystander in Cirrhotic and Non-Cirrhotic Portal Hypertension?
         Tahan V, Karaca C, Uslu E, Eren F.,  Aydin S, Uzun H Hamzaoglu HO,. Besisik F, 
         Avsar E., Kalayci C, Okten A, Tozun  N. 
         6th African Association for Study of  Liver Disease, March 3-6, 2003, p 32, Cairo, Egypt. 
         
39.Common CARD15/NOD2 mutations in  Turkish population: 
    no association with Behçet’s disease.
         Uyar FA, Over Hamzaoğlu H, Ture F,  Tozun N, Saruhan –Direskeneli G, Gul A 
         15th European Immunology Congress 2003  Rhodes - Greece   
         
40. Fatty liver and non alcoholic  steatohepatitis:Knowledge is the past hope is the future 
         Tozun N
         The 8th International Congress of  the Egyptian Society of Hepatology, 
         Gastroenterology  and Infectious Diseases.
         12-16 October 2003, Cairo. Abstract  Book p.3-4
         
41. Anti-HCV Seroprevalence in Chronic  HCV Patient’s  Children in Turkey       
      Tahan V., Yildirim B., Ture F.,. Giral  A,. Ozdogan O,. Imeryuz N,. Avsar E, 
      Mert A, Senturk H, Kalayci C, Tozun N.
       XII Falk Liver Week 2003 October  17-19, Freiburg; Germany.
         
42. Awareness Of Transmission Route  Of HCV among Health Care Professionals
      HCV-Infected Patients And Their Relatives
         Tiftikci A, Zeytinoglu D, Sagnic S,  Taneroglu S, Arer I, Bekiroglu N, Tahan V, Tozun N. 
         7th Mediterranean Medical  Congress & 3dr Mediterranean Medical School
         7-9 November 2003,Vilamoura,Portugal. Abstract  Book p.32
         
43.Leading Cause Of Non-Variceal  Upper Gastrointestinal Bleeding Is Peptic Ulcer 
     Tiftikci A, Zeytinoglu D,  Sagnic S, Taneroglu S, Arer I, Bekiroglu N, Tahan V, Tozun N. 
     7th Mediterranean  Medical Congress & 3dr Mediterranean Medical School.
     7-9 November  2003,Vilamoura,Portugal .Abstract Book p.9
         
44. Fatty Liver and  Non Alcoholic Steatohepatitiis
         Tozun N
         7th Mediterranean Medical Congress & 3dr  Mediterranean Medical School.7-9              
         November 2003,Vilamoura,Portugal .Abstract Book p.52-54
         
45. Is serum hyaluronic acid a  surrogate marker predicting liver fibrosis in NAFLD
        Duman D,Tahan V,Alpay  N,Taninmiş H,Haklar G,Celikel C,Avsar E,Kalayci C, Tozun N
         Advances in the Management of GI  Cancer.13th World Congress of the 
         International Associatons of Surgeons and  Gastroenterologists, 3-6 December 2003-12-14 
         Estoril,Portugal Abstracts  Hepatogastroenterology 2003, 50 suppl p126
         
46.Bouveret’s syndrome complicated  by a distal gallstone ileus: case report       
         Gençosmanoğlu R, Inceoğlu  R,  Baysal Ç, Akansel S, Tozun N
         Advances in the Management of GI  Cancer.13th World Congress of the 
         International Associatons of Surgeons and  Gastroenterologists, 3-6 December 2003-12-14
         Estoril,Portugal Abstracts  Hepatogastroenterology 2003, 50 suppl.p.154
         
47.The Buried Bumper  Syndrome:Migration of the internal bumper of   percutaneous
      endoscopic  gastrostomy tube into the abdominal wall;case report 
         Gencosmanoglu R, Koc D, Tozun N.  
         Advances in the Management of GI  Cancer.13th World Congress of the 
         International Associatons of Surgeons and  Gastroenterologists, 3-6 December 2003-12-14 
         Estoril,Portugal Abstracts  Hepatogastroenterology 2003, 50 suppl OP 21  
         
48. Pentoxyfillin (PO)inhibits  TNF-alpha production by peripheral blood mononuclear cells 
     .n patients with Non  Alcoholic Steatohepaitis (NASH)
         Duman DG,Ozdemir FT,Demiralp E, Celikel  C,Kalayci O,Tozun N, Kalayci C
         39.th  Annual Meeting of the Eurppean Association for the Study of the Liver
         April 14-18 2004, Berlin.J Hepatol  2004; 40 S1:171
49.Role of transforming growth  factor beta-1 in course of chronic hepatitis C infection.
        Bozbas A, Eren F, Tahan  V, Duman D, Tiftikci A, Tozun N
        CTC & EASGLD-     Inauguration  Conference 2004; Abstract 158
         
50. The effect of rosıglıtazone on  methıonıne and cholıne defıcıent dıet model of 
     non-  alcoholıc steatohepatıtıs ın rats
         Tahan V , Avşar E, Eren F, Yavuz D,  Emekli E,  Yüksel M, Gören Z, Imeryuz N,  
         Çelikel Ç, Haklar G, Tozun N. 39.th Annual Meeting of the European Association 
         for the Study of the Liver
         April 14-18 2004, Berlin .J Hepatol 2004; 40 S1:172
         
51.Barghi I. Unal O. Turgut D. Nazlı  A. Saglam B. Tiftikci A. İmeryüz N. Ovunc O. Abut E. Tozun N. 
    Alternative  medicine in gastroenterologic patients: their interest and knowledge. 
     J. Of  Gastro& Hepato Vol. 19 (suppl) APASL abstract 304
         
52. Awareness of health care staff,  HCV infected patients and household contacts of     
      HCV transmission routes:
         Tiftikci A, Zeytinoglu D, Sagnic S, Taneroglu S,  Arer I, Bekiroglu N , Tahan V,   Tozun N.   
         40th Annual Meeting of the European Association for the Study of  the     
         Liver. April 13-17 , 2005, Paris  .J Hepatol 2005; 42 S2:223
         
53.Rosiglitazone shows an  anti-inflammatory effect by decreasıng interleukin- 6  
     in a rat model of non-alcoholic  steatohepatitis
         Tahan V,Imeryuz N,Uzun H,Eren F,Gogas  D,Barhghi ,Celikel C, Avsar E,Tozun N
         40th Annual Meeting of  the European Association for the Study of the Liver.
         April 13-17 , 2005, Paris  .J Hepatol 2005; 42 S2:254
         
54. Role of Ursodeoxycholic  Acid in the prevention of methotrexate  induced liver toxicity
         40th Annual Meeting of the European  Association for the Study of the Liver. 
         April 13-17 , 2005, Paris .J Hepatol  2005; 42 S2:255
         
55. .Rosiglitazone has an  antiinflammatory effect by decreasing inflammatory cytokines in a rat model of  NASH
      Tahan V,İmeryüz N,Eren F,Uzun H,Gogas D,Celikel C,Avsar E,Tozun N
       Poster 0794,World Congress of  Gastroenterology Montreal Canada ,
       September 8-11 2005 Presidential poster
4.Excerpta Medica Ya Da Diğer  Ulusal/Uluslararsı Endekslerde Taranan Dergilerdeki Yayınlar

1. Mirizzi  syndrome (Report of three cases)
         Ökten, A., Tözün, N., Yalçın, S.,  Arıoğul, O., Yeğinsu, O., Ulagay, I.
         Med Bull  İstanbul 17: 137-143, 1984.
         
2. Growth retardation in Crohn’s  disease
         Tözün,  N., Erol, N., Yıldır, C., Emre, A., Yalçın, S., Sezer, R., Yeğinsu, O.
         Med Bull İstanbul 17:  144-154, 1984.
         
3..  Diagnostic accuracy of  ERCP:  Comparison with ultrasonography and  computed  tomography.
         Ulusoy, N.  B., Tözün, N., Kalaycı, C., Gürmen, N., Minareci, Ö., 
         Dolunay, F., Calay, M.,  Bayram, M., Kuşculu, N., Yakın, G.
         Med Bull  Istanbul 21: 179-188, 1988.
         
4. Plasma atrial natriuretic factor  in chronic liver disease.
         Tözün,  N., Ulusoy, N. B., Taga, Y., Kalaycı, C., Ökten, A., Berkman, K.
         Marmara Med J 2: 82-86, 1989.
         
5.  Colorectal polyps with early invasive cancer. Endoscopic removal or resection ?
         Tankurt, E., Tözün, N., Kalaycı, C.,  Ulusoy, N. B.,
         Marmara Med J 3: 156-161, 1990.
6.  Hyperplastic polyps of the large bowel: A possible marker role for adenomas.
         Tankurt, E., Tözün, N., Direskeneli,  H., Kalaycı, C., Ulusoy, N. B.
         Turk J Gastroenterology 2: 99-102,  1991.
7.  Prevelance of   helicobacter pylori infection among patients with end-stage chronic  renal  
     failure on hemodialysis  programme.
         Tankurt, E., Tözün, N., Kalaycı, C.  Gültekin, OSG., Ulusoy NB.
         Turk   J  Gastroenterohepatol 3: 206-208,  1992.
8.  Cholelithiasis and acute cholecystitis in patients with chronic liver disease.
         Tözün, N., Alpdoğan, Ö., Avşar,  E.,Tankurt, E., Kalayı, C., İnceoğlu, R., 
         Yalın, R.
         Marmara Med J 8: 88-91, 1995.
9. A case  of glycogen storage disease type III.
         Kırış, S., Özdoğan, O., Avşar, E.,  Kalaycı, C., Tözün, N., Ulusoy, NB.
         Marmara  Med J 9: 28-31, 1996.
10.  Prevalance of helicobacter pylori in endoscopists.
         Tözün, N.,  Durademir, A., Avşar, E., Özdoğan, O., Kalaycı, C., Tankurt, E., Ulusoy, NB.,  Bekiroğlu, N.
         Marmara Med J 10: 33-35, 1997
11. Five  cases of carcinoma of the papilla of Vater with double primary malignancies 
         Kalaycı C,  Özdoğan O, Küllü S, Tözün N, Ulusoy N.
         Marmara  Med J .1998;11:43-47
12.  Hepatitis G virus: Structure, epidemiology and clinical significance.
         Avşar, E., Tözün, N
         Marmara  Med J 1998; 11:113-16
13.  Student’s perception about medical education   at Marmara University School of Medicine
         Kalaça S,Kan B,Çakın A,Güney İ,Tözün  N
         Marmara  Med J 2000:13:131-137
14. Percutaneous  endoscopic gastrostomy:results of 50 cases
         Gençosmanoğlu R,Şad O,Avşar E,Hamzaoğlu  H,Özdoğan O,Kalaycı C,Tözün N
         Marmara Med J  2000;13:212-219
15. The Buried Bumper Syndrome: A  Rare Complication of Percutaneous Endoscopic Gastrostomy (Case Report)
         Gençosmanoğlu R, Şad O, Hamzaoğlu  HÖ, Avşar E, Tözün N.
         Clinical & Experimental Surgery, 8(3), 149-152 (2000).
         
16.The effect of sedation with  intravenous midazolam in 100 patients undergoing upper gastrointestinal  endoscopy
        Koç  D,Gençosmanoğlu R,Şad O,Tözün N
        Marmara Med J 2001;14:96-101 
         
5. Uluslararası kitaplarda basılı yayınlar (Tam makale)
1.Role of protein C  in Thrombus formation in cases of presinusoidal and postsinusoidal 
   portal  hypertension.
         Tözün N., Ökten A., Yardımcı  T.
         İn  Thrombosis and Hemorrhagic Disease. O.N.Ulutin and H. Vinazzer (eds).   
         Proceedings of IV th International Meeting  of 
         Danubian League Against Thrombosis  and hemorrhagic Diseases, 
         Sept.  25-28 1985, p. 404-408.
2.Medical management  of  upper GI bleeding.
         Tözün N.
         Proceedings  of the symposium on recent advances in Cardiovascular Surgery, 
         Pulmonary  Disease, Gastroenterology and Urology.
         July 1-2, 1993, İstanbul, p.  111-117.
3.Extrahepatic  manifestations of viral hepatitis.
         Tözün N.
         Syllabus of  Postgraduate Course of European Association  for the Study of the 
         Liver, 26 June 1998, İstanbul,  p.14-24.
4.Medical therapy of inflammatory bowel disease
         Tözün N
         Mediterranean Medical  Society
         Syllabus of 1 st  Mediterranean Summer School 1998
         Edit  D.Tsantoulas,Samos Greece
         p.122-129,1998
 
6. Uluslararası kitaplarda Editör/editor yardımcılığı
VI International Symposium on  Inflammatorty Bowel Diseases
         D Rachmilewitz,R Modigliani,DB Sachar,  DK Podolsky and N.Tözün Eds
Kluver Academic Publishers, 2002