1. Nalcacioglu H, Ozkaya O, Baysal K, Kafali CH, Avci B, Tekcan D, Genc G. The Role of Bioelectrical Impedance Analysis, NT-ProBNP and Inferior Vena Cava Sonography in the Assessment of Body Fluid Volume in Children with Nephrotic Syndrome (Nephrologia, basım aşamasında)
  2. Deschênes G, Vivarelli M, Peruzzi L; ESPN Working Group on Idiopathic Nephrotic Syndrome.. Alpay H, Alvaro Madrid A, Andersen R, Bald M, Benetti E, Berard E, Bockenhauer D, Boyer O, Brackman D, Dossier C, Ekinci Z, Emma F, Enneman B, Espinosa-Roman L, Fila M, Ghio L, Groothoff JW, Guigonis V, Jankauskiene A, Kagan M, Kovacevic M, Kemper MJ, Levtchenko E, Maringhini S, Mir S, Mitsioni A, Mizerska-Wasiak M, Wasiak K, Moczulska A, Montini G, Murer L, Nuutinen M, Obukhova V, Oh J, Ozkaya O, Papalia T, Peco Antic A, Pecoraro C, Pena-Carrion A, Petrossian E, Pietrement C, Prikhodina L, Querfeld U, Rittig S, Saleem MA, Saraga M, Savenkova N, Sever L, Tullus K, Ulinski T, Vande Walle J, Vara J, Webb N, Weber LT, Zurowska A. Variability of diagnostic criteria and treatment of idiopathic nephrotic syndrome across European countries. Eur J Pediatr. 2017 Mar 16. doi: 10.1007/s00431-017-2891-2. [Epub ahead of print]
  3. Korkmaz E, Lipska-Ziętkiewicz BS, Boyer O, Gribouval O, Fourrage C, Tabatabaei M, Schnaidt S, Gucer S, Kaymaz F, Arici M, Dinckan A, Mir S, Bayazit AK, Emre S, Balat A, Rees L1, Shroff R, Bergmann C, Mourani C, Antignac C1, Ozaltin F, Schaefer F; PodoNet Consortium. Collaborators (67) Azocar M, Quiroz L, Serna Higuita LM, Dušek J, Ranchin B, Fischbach M, Davitaia T, Gellermann J, Oh J, Melk A, Schaefer F, Wigger M, Fotios P, Sallay P, Gheissari A, Remuzzi G, Pasini A, Ghiggeri GM, Ardissino G, Benetti E, Emma F, Aoun B, Abou-Jaoudé P, Jankauskiene A,Wasilewska A, Hyla-Klekot L, Zurowska A, Drozdz D, Tkaczyk M, Borzecka H, Silska M, Jarmolinski T, Firszt-Adamczyk A, Ksiazek J, Kuzma-Mroczkowska E, Medynska A, Szczepanska M, Afonso AC, Jardim H, Peco-Antic A, Bogdanovic R, Krmar RT, Simonetti GD, Saeed B, Anarat A,Bakkaloglu A, Balat A, Baskin ZE, Cakar N, Erdogan O, Özcakar B, Ozaltin F, Sakallioglu O, Soylemezoglu O, Akman S, Gok F, Caliskan S,Candan C, Emre S, Mir S, Akil I, Ertan P, Özkaya O, Kalyoncu M, Simkova E, Alhammadi E, Sobko R. ADCK4-Associated Glomerulopathy Causes Adolescence-Onset FSGS. J Am Soc Nephrol. 2016 Jan;27(1):63-8.
  4. Lipska BS, Ranchin B, Iatropoulos P, Gellermann J, Melk A, Ozaltin F, Caridi G, Seeman T,   Tory K, Jankauskiene A, Zurowska A, Szczepanska M, Wasilewska A, Harambat J, Trautmann A, Peco-Antic A, Borzecka H, Moczulska A, Saeed B, Bogdanovic R, Kalyoncu M, Simkova E, Erdogan O, Vrljicak K, Teixeira A, Azocar M, Schaefer F; PodoNet Consortium. Collaborators: Azocar M, Higuita LM, Ranchin B, Fischbach M, Davitaia T, Gellermann J, Oh J, Melk A, Schaefer F, Wigger M, Printza N, Sallay P, Gheissari  A, Noris M, Pasini A, Marco Ghiggeri G, Ardissino G, Benetti E, Emma F, Aoun B, Abou-Jaoudé P, Jankauskiene A, Wasilewska A, Gacka E, Zurowska A, Drozdz D, Tkaczyk M, Borzecka H, Silska M, Jarmolinski T, Firszt-Adamczyk A, Ksiazek J, Kuzma-Mroczkowska E, Medynska A, Szczepanska M, Caldas Afonso A, Jardim H, Bogdanovic R, Krmar RT, Simonetti GD, Saeed B, Anarat A, Balat A, Baskin ZE, Cakar N, Erdogan O, Ozcakar B, Ozaltin F, Sakallioglu O, Soylemezoglu O, Akman S, Gok F, Caliskan S, Candan C, Emre S, Mir S, Akil I, Ertan P, Ozkaya O, Kalyoncu M, Simkova E, Alhammadi E, Sobko R. Genotype-phenotype associations in WT1 glomerulopathy. Kidney Int. 2014 May;85(5):1169-78. doi: 10.1038/ki.2013.519. Epub 2014 Jan 8. PubMed PMID: 24402088.-Associated Glomerulopathy Causes Adolescence-Onset FSGS. J Am Soc Nephrol. 2016 Jan;27(1):63-8.
  5. Illeez OG, Ozkan FU, Ozkaya O, Aktas I, Ozkan K. Bilateral Idiopathic Carpal Tunnel Syndrome in a 4-Year-Old Girl. J Trop Pediatr. 2017 Feb;63(1):78-81.
  6. Bıçakcı Ü, Genç G, Tander B, Günaydın M, Demirel D, Özkaya O, Rızalar R, Arıtürk E, Bernay F. Single port laparoscopic and open surgical accesses of chronic peritoneal dialysis in children: A single center experience over 12years. J Minim Access Surg. 2016 Apr-Jun;12(2):162-6.
  7. Ucakturk A, Avci B, Genc G, Ozkaya O, Aydin M. Kidney injury molecule-1 and neutrophil gelatinase associated lipocalin in normoalbuminuric diabetic children. J Pediatr Endocrinol Metab. 2016, Feb;29(2):145-51
  8. Soylemezoglu O, Kandur Y, Duzova A, Ozkaya O, Kasapcopur O, Baskin E, Fidan K, Yalcinkaya F. Familial Mediterranean fever with a single MEFV mutation:comparison of rare and common mutations in a Turkish paediatric cohort. Clin Exp   Rheumatol. 2015;33(6 Suppl 94):S152-5.
  9. Trautmann A, Bodria M, Ozaltin F, Gheisari A, Melk A, Azocar M, Anarat A, Caliskan S, Emma F, Gellermann J, Oh J, Baskin E, Ksiazek J, Remuzzi G, Erdogan O, Akman S, Dusek J, Davitaia T, Özkaya O, Papachristou F, Firszt-Adamczyk A, Urasinski T, Testa S, Krmar RT, Hyla-Klekot L, Pasini A, Özcakar ZB, Sallay P, Cakar N, Galanti M, Terzic J, Aoun B, Caldas Afonso A, Szymanik-Grzelak H, Lipska BS, Schnaidt S, Schaefer F; PodoNet Consortium. Spectrum of steroid-resistant and congenital nephrotic syndrome in children: the PodoNet registry cohort. Clin J Am Soc Nephrol. 2015 7;10(4):592-600.
  10. Baskin E, Gulleroglu K, Kantar A, Bayrakci U, Ozkaya O. Success of eculizumab in the treatment of atypical hemolytic uremic syndrome. Pediatr Nephrol. 2015,;30(5):783-9.
  11. Lipska BS, Ranchin B, Iatropoulos P, Gellermann J, Melk A, Ozaltin F, Caridi, G, Seeman T, Tory K, Jankauskiene A, Zurowska A, Szczepanska M, Wasilewska A, Harambat J, Trautmann A, Peco-Antic A, Borzecka H, Moczulska A, Saeed B, Bogdanovic R, Kalyoncu M, Simkova E, Erdogan O, Vrljicak K, Teixeira A, Azocar M, Schaefer F; PodoNet Consortium. Collaborators: Azocar M, Higuita LM, Ranchin B, Fischbach M, Davitaia T, Gellermann J, Oh J, Melk A, Schaefer F, Wigger M, Printza N, Sallay P, Gheissari  A, Noris M, Pasini A, Marco Ghiggeri G, Ardissino G, Benetti E, Emma F, Aoun B, Abou-Jaoudé P, Jankauskiene A, Wasilewska A, Gacka E, Zurowska A, Drozdz D, Tkaczyk M, Borzecka H, Silska M, Jarmolinski T, Firszt-Adamczyk A, Ksiazek J, Kuzma-Mroczkowska E, Medynska A, Szczepanska M, Caldas Afonso A, Jardim H, Bogdanovic R, Krmar RT, Simonetti GD, Saeed B, Anarat A, Balat A, Baskin ZE, Cakar N, Erdogan O, Ozcakar B, Ozaltin F, Sakallioglu O, Soylemezoglu O, Akman S, Gok F, Caliskan S, Candan C, Emre S, Mir S, Akil I, Ertan P, Ozkaya O, Kalyoncu M, Simkova E, Alhammadi E, Sobko R. Genotype-phenotype associations in WT1 glomerulopathy. Kidney Int. 2014;85(5):1169-78
  12. Bek K, Ozkaya O, Açıkgöz Y, Bedir A, Altuntaş A, Genc G. Plasma cell free DNA levels in children with Henoch Shonlein Purpura. Turkish Journal of Biochemistry. 2014  39(3): 397-400,
  13. Genc G,Kilinc V, Bedir A, Ozkaya O.Effect of creatine and pioglitazone on Hk-2 cell line cisplatin nephrotoxicity.Ren Fail. 2014;36(7):1104-7
  14. Genc G, Okuyucu A, Meydan BC, Yavuz O, Nisbet O, Hokelek M, Bedir A, Ozkaya O.Effect of free creatine therapy on cisplatin-induced renal damage.Ren Fail. 2014;36(7):1108-13
  15. Ozen S, Demirkaya E, Duzova A, Erdogan O, Erken E, Gul A, Kasapcopur O, Kasifoglu T, Kisacik B, Ozdogan H, Tunca M, Acikel C; Direskeneli H, Basbozkurt G, Sayarlioglu M, Yuksel S, Yildiz F, Donmez O, Berdeli A, Senel S, Ayaz N, Polat A, Sozeri B, Tabel Y, Akar S, Onat A, Ozkaya O, Emre S, Akinci N, Ozcelik G, Yavuz S, Yesilkaya S, Ugurlu S, Gok F, Poyrazoglu H, Bakkaloglu S, Erten S, Tufan A, Goker B,Kavukcu S, Cakar N, Saldir M, Delibas A, Makay B, Kısaarslan A, Unsal S, Topaloglu R, Erdem H. FMF Arthritis Vasculitis and Orphan disease Research in pediatric rheumatology (FAVOR) and Turkish FMF study group. FMF50: a score for assessing outcome in familial Mediterranean fever. Ann Rheum Dis. 2014;73(5):897-901.
  16. Borte S, Celiksoy MH, Menzel V, Ozkaya O, Ozen FZ, Hammarström L, Yildiran A. Novel NLRP12 mutations associated with intestinal amyloidosis in a patient diagnosed with common variable immunodeficiency. Clin Immunol. 2014;154(2):105-11.
  17. Acikgoz Y, Can B, Bek K, Acikgoz A, Ozkaya O, Genç G, Sarikaya S. The effect of simvastatin and erythropoietin on renal fibrosis in rats with unilateral ureteral obstruction. Ren Fail. 2014 Mar;36(2):252-7
  18. Alayli G, Durmus D, Ozkaya O, Sen HE, Nalcacioglu H, Bilgici A, Kuru O. Functional capacity, strength, and quality of life in children and youth with familial Mediterranean fever. Pediatr Phys Ther. 2014;26(3):347-52.
  19. Ozkaya O, Nalcacioglu H, Tekcan D, Genc G, Meydan BC, Ozdemir BH, Baysal MK,Keceligil HT. Eculizumab therapy in a patient with dense-deposit disease associated with partial lipodystropy. Pediatr Nephrol. 2014;29(7):1283-7.
  20. Lipska BS, Iatropoulos P, Maranta R, Caridi G, Ozaltin F, Anarat A, Balat A, Gellermann J, Trautmann A, Erdogan O, Saeed B, Emre S, Bogdanovic R, Azocar M, Balasz-Chmielewska I, Benetti E, Caliskan S, Mir S, Melk A, Ertan P, Baskin E, Jardim H, Davitaia T, Wasilewska A, Drozdz D, Szczepanska M, Jankauskiene A, Higuita LM, Ardissino G, Ozkaya O, Kuzma-Mroczkowska E, Soylemezoglu O, Ranchin B, Medynska A, Tkaczyk M, Peco-Antic A, Akil I, Jarmolinski T, Firszt-Adamczyk A, Dusek J, Simonetti GD, Gok F, Gheissari A, Emma F, Krmar RT, Fischbach M, Printza N, Simkova E, Mele C, Marco Ghiggeri G, Schaefer F. Genetic screening in adolescents with steroid-resistant nephrotic syndrome. Kidney Int. 2013;84(1):206-13.
  21. Ekinci Z.Candan C, Alpay H, Canpolat N, Akyüz S, Gündüz Z, Dursun H, Isıyel E, Öktem F, Tabel Y, Akil İ, Delibaş A, Güleroğlu K, akıncı N, Dincel N, Ozkaya O, Söylemezoğlu O.  Hemolytic uremic syndrome outbreak in Turkey in 2011. Turk J Pediatr 2013;55(3):246-52
  22. Genc G, Avci B, Aygun C, Ozkaya O, Kücüködük S. Urinary NGAL in septic preterm babies: A preliminary study, Am J Perinatol. 2013;30(8):655-60.
  23. Genc G, Ozkaya O, Avci B, Aygun C, Kücükodük S. Kidney Injury Molecule-1 as a  promising biomarker for acute kidney injury in premature babies  2013;30(3):245-52
  24. Aires I, Santos AR,Bogarin R, Genc G,Prates J, Ozkaya O, Carvalho.Disruption of urate transport in familial renal glucosuria and report on SGLT2 expression in normal and pathological kidney. Port J Nephrol Hypert .2013, vol.27, :.4
  25. Nalcacioglu H, Tekcan D, Genc G, Comba A, Can Meydan B, Caltepe G, Ozkaya O,  Kalayci AG. A rare cause of nephrotic syndrome in a 14-year-old boy: Questions. Pediatr Nephrol. 2014 Jul;29(7):1283-7.
  26. Nalcacioglu H, Tekcan D, Genc G, Comba A, Can Meydan B, Caltepe G, Ozkaya O,  Kalayci AG. A rare cause of nephrotic syndrome in a 14-year-old boy: Answers. Pediatr Nephrol. 2012 Aug 24. [Epub ahead of print]
  27. Nalcacioglu H, Ozden E, Genc G, Yakupoglu YK, Sarikaya S, Ozkaya O. An uncommon cause of acute kidney injury in young children: Cystinuria. J Pediatr Urol. 2013 Feb;9(1):e58-63.
  28. Genc G, Ozkaya O, Aygun C, Yakupoglu YK, Nalcacioglu H. Vaccination status of      children considered for renal transplants: missed opportunities for vaccine preventable diseases. Exp Clin Transplant. 2012;10(4):314-8.
  29. Asilioglu N, Acikgoz Y, Paksu MS, Gunaydin M, Ozkaya O. Is Serum Cystatin C a Better Marker than Serum Creatinine for Monitoring Renal Function in Pediatric Intensive Care Unit? J Trop Pediatr. 2012;58(6):429-34
  30. Genc G, Bicakci U, Gunaydin M, Tander B, Aygun C, Ozkaya O, Rizalar R, Ariturk E,  Kucukoduk S, Bernay F. Temporary peritoneal dialysis in newborns and children: a single-center experience over five years. Ren Fail. 2012;34(9):1058-61.
  31. Alayli G, Durmus D, Ozkaya O, Sen HE, Genc G, Kuru O. Frequency of juvenile fibromyalgia syndrome in children with familial Mediterranean fever: effects on depression and quality of life. Clin Exp Rheumatol. 2011; 29(6 Suppl 69):S127-32.
  32. Akpolat T, Özkaya O, Özen S. Homozygous M694V as a risk factor for amyloidosis  in  Turkish FMF patients. Gene. 2012 ; 15;492(1):285-9.
  33. Özden E, Mercimek MN, Yakupoğlu YK, Özkaya O, Sarıkaya S. Modified Clavien             classification in percutaneous nephrolithotomy: assessment of complications in children. J Urol. 2011; 185(1):264-8
  34. Nalcacıoglu H, Genc G, Meydan BC, Ozkaya O. Hyperkalaemia in a female patient with systemic lupus erythematosus: answers. Pediatr Nephrol. 2012 27(9):1499-503.
  35. Süllü Y, Yıldıran A, Sullu Y, Helek D, Özkaya O. Sarcoid uveitis simulating birdshot chorioretinopathy in a child. Retinal cases  brief reports 2012, 6(1):7-10
  36. Açıkgöz Y, Özkaya O, Bek K, Genç G, Sensoy SG, Hökelek M.Cryptosporidiosis: A rare and severe infection in a pediatric renal transplant recipient. Pediatr Transplant. Jun;16(4):E115-9.
  37. Düzova A, Bakkaloglu A,Kalyoncu M,Poyrazoglu H, Delibas A, Ozkaya O,Peru Alpay H, Soylemezoglu O,Gur-Guven ABak M, Bircan Z,Cengiz N,Akil İ, Ozcakar B, Uncu N, Karabay-Bayazit A,  Sonmez D and on behalf of The Turkish Society for Pediatric Nephrology Acute Kidney Injury Study Group. Etiology and outcome of acute kidney injury in children.Pediatr Nephrol 2010; 25(8):1453-61
  38. Ozkaya O,  Yavuz O,    Can B,  Dilek M,  Savlı E,  Acikgoz Y,  Akpolat T. Effect of Rosiglitazone on cisplatin-induced nephrotoxicity. Ren Fail. 2010;32(3):368-71
  39. Özkaya O, Genc G, Bek K, Süllü Y. A case of acetaminophen (paracetamol) causing renal failure without liver damage in a child and review of literature. Ren Fail. 2010;32(9):1125-7
  40. Genc G, Ozkaya O, Bek K, Acikgoz Y, Danaci M. Rare Cause of Recurrent Hematuria in Children: Nutcracker Syndrome. J Trop Pediatr 2010;56(4):275-7
  41. Genc G,  Ozkaya O, Açıkgöz Y, Yapıcı O, Bek K, Şensoy SG, Özyürek E. Acute renal failure with acyclovir treatment in a child with leukemia. Drug Chem Toxicol 2010 ;33(2):217-9
  42. Buyan N, Turkmen MA, Bilge I, Baskin E, Haberal M,  Bilginer Y, Mir S, Emre S, Akman S, Ozkaya O, Fidan K, Alpay H, Kavukcu S, Sever L,Ozçakar B, Dogrucan N- Turkısh Pediatric Kidney Transplantation Study Group. Quality of Life in Children with Chronic Kidney Disease (with child and parent assessments). Pediatr Nephrol 2010 25(8):1487-96
  43. Ozkaya O, Bek K, Bedir A, Açıkgöz Y,Özdemir T. Plasma cell-free DNA levels in children  on peritoneal dialysis. Nephron Clin Prac 2009, 15;113(4):c258-c261
  44. Erol I, Buyan N, Ozkaya O, Sahin F, Beyazova U, Söylemezoğlu O, Hasanoğlu Reference values for urinary calcium, sodium and potassium in healthy newborns, infants and children. Turk J Pediatr. 2009;51(1):6-13.
  45. Söylemezoglu O, Ozkaya O,  Ozen S, Bakkaloglu A,  Dusunsel R, Peru H,  Çetinyurek A, Yıldız N, Donmez O, Buyan N, Mir S, Arısoy N Gur-Guven A, Alpay H, Ekim M, Aksu N, Soylu A, Gok F, Poyrazoglu H,  Sonmez F; Turkish Pediatric Vasculitis Study Group Henoch-Schönlein Nephritis: a nationwide study. Nephron Clin Pract. 2009;112(3):c199-204
  46. Soylemezoglu O, Peru H, Gonen  S,  Cetinyurek A,      Ozkaya O, Bakkaloğlu S,  Buyan N, Hasanoglu  E. CTLA-4 +49 A/G genotype and HLA-DRB1 polymorphisms in Turkish patients with Henoch Schonlein Purpura. Pediatr Nephrol 2008 23(8):1239-44.
  47. Senturk N, Ozkaya O, AytekinS, Bek K, Açikgöz Y, Aydin F, Yuksel Bek, Turanli A.Y. Characteristics of pruritus in children on peritoneal dialysis.  Nephron Clin Pract. 2008;109(3):c168-72.
  48. Bek K, Ozkaya O, Mutlu B, Dağdemir A, Sungur M, Açikgöz Y, Işlek I, Baysal K. Charcoal haemoperfusion in amitriptyline poisoning: experience in 20 children. Nephrology. 2008; 13(3):193-7.
  49. Alaylı G, Ozkaya O, Bek K, Calmaşur A, Diren B, Bek Y, Cantürk F.  Physical function, muscle strength and muscle mass in children on peritoneal dialysis.Pediatr Nephrol. 2008; 23(4):639-644.
  50. Yigit S, Bagci H, Ozkaya O, Ozdamar K, Cengiz K, Akpolat T.  MEFV mutations in patients with familial Mediterranean fever in the Black Sea region of Turkey: Samsun experience J Rheumatol. 2008; 35(1):106-13.
  51. Haciomeroglu P, Ozkaya O, Gunal N, Baysal K. An echocardiographic assessment of cardiac functions and structure in children on dialysis.Ren Fail. 2008;30(2):147-53.
  52. Sakallioğlu EE, Lütfioğlu M, Ozkaya O, Aliyev E, Açikgöz G, Firatli E.  Fluid dynamics of gingiva and gingival health in children with end stage renal failure. Arch Oral Biol. 2007; 52(12):1194-
  53. Haciomeroglu P, Ozkaya O, Gunal N, Baysal K. Venous collapsibility index changes in children on dialysis.Nephrology. 2007;12(2):135-9
  54. Bilen C, Koçak B, Kıtırcı G, Özkaya O, Sarıkaya S. Percutaneous Nephrolithotomy in children: Lessons learned in 5 years at a single Institution . J Urol  2007; 177: 1867-1871
  55. Ozkaya O, Buyan N,  Bideci A, Gonen S, Ortac E, Fidan K,  Cinaz P,   Söylemezoğlu O. Osteoprotegerin and RANKL serum levels and their relationship with serum Ghrelin in children with chronic renal failure and on dialysis. Nephron Clin Prac 2007;105(4): 153-8
  56. Bek K, Ozkaya O, Fisgin T, Aliyazicioglu Y, Paksu MS, Ozgen T, Albayrak D,Baysal K. Protein Z and natural anticoagulants in children on peritoneal  dialysis and hemodialysis.Pediatr Nephrol 2007;22(6):881-6
  57. Kalman S, Bakkaloğlu S, Dalgiç B, Ozkaya O, Söylemezoğlu O, Buyan N. Recurrent hemolytic uremic syndrome associated with intestinal lymphangiectasia. J Nephrol. 2007; 20(2):246-9.
  58. Bek K, Koçak S, Ozkaya O, Yilmaz Y, Aydin OF, Taşdöven CS. Carbamazepine poisoning managed with haemodialysis and haemoperfusion in three adolescents. Nephrology 2007;12(1):33-5
  59. Özkaya O, Bek K, Alaca N, Ceyhan M, Açıkgöz Y, Taşdemir HA. Cerebral vasculitis in a child with Henoch-schönlein purpura and familial Mediterranean fever Clin Rheumatol. 2007; 26(10):1729-32
  60. Bilen C, Aygün C, Özkaya O, Aydin O, Sarıkaya S, Gürmen N. Percutaneous ureterostomy as an effective diverson in a Newborn. Int J Urol 2006; 13(5):622-4.
  61. Bilen C, Özkaya O,  Sarıkaya Ş, Aşcı R, Büyükalpelli R. Laparoscopic excision of renal hydatid cyst in a preadolescent . J Pediatr Urol 2006 2 :210-213, 2006
  62. Aygün C, Özkaya O,  Ayyıldız S, Güngör O, Mutlu B,  Küçüködük Ş. An unusual cause of acute renal failure in newborn: hydrometrocolpos Pediatr Nephrol, 2006, 21(4):572-3
  63. Ozkaya O, Paksu MS, Bek K, Yıldız L, Fısgın T, Gürmen N, Karagoz F.  Renal amyloidosis due to pulmonary tuberculosis in a patient with Down syndrome. Eur J Pediatr. 2006; 165(2):134-135
  64. Ortaç E, Ozkaya O, Saraymen R, Yıldız N,  Bedir A, Buyan N, Bek K, Okuyucu A, Baysal K. Low hair selenium and plasma glutathıone peroxidase in children with chronic renal failure. Pediatr Nephrol. 2006 21(11):1739-45
  65. Ozkaya O, Bek, Fışgın T, Aliyazıcıoğlu Y,  Sultansuyu S,  Açıkgöz YS, Albayrak D, Baysal K. Low protein Z levels in children wıth nephrotic syndrome. Pediatr Nephrology 2006 ,21; 1122-6
  66. Aliyazicioglu Y, Özkaya O, Yakut H, İşlek İ, Alvur M. Leptin levels in Henoch-schonlein purpura. Clin Rheumatol  2007 ; 26 (3),371-5
  67. On behalf of Turkish Pediatric Vasculitis Study Group; Ozen S, Bakkaloglu A,Dusunsel R, Soylemezoglu O, Ozaltin F, Poyrazoglu H, Kasapcopur O, Ozkaya O, Yalcinkaya F, Balat A, Kural N, Donmez O, Alpay H, Anarat A, Mir S, Gur-Guven A, Sonmez F, Gok F.  Childhood vasculitides in Turkey: a nationwide survey. Clin Rheumatol. 2007; 26 (2),196-200
  68. Buyan N, Bideci A, Özkaya O, Ortac E, Bakkaloglu SA, Gönen S, Peru H, Söylemezoğlu O, Cinaz P. Leptin and resistin levels and their relationships with glucose metabolism in children wıth chronic renal insufficiency and undergoing dialysis. Nephrology, 2006, 11(3):192-6.
  69. Özkaya O, Söylemezoğlu O, Gönen S, Mısırlıoğlu M,  Tuncer S,  Kalman S,  Buyan N,   Hasanoğlu E. Renin-Angiotensin System genes polymorphisms: association with susceptibility to Henoch-Schonlein Purpura and renal involvement Clin Rheumatol 2006, 25(6):861-5
  70. Kalman S, Buyan N, Yürekli M, Özkaya O, Bakkaloglu S, Söylemezoglu O.  Plasma and urinary adrenomedullin levels in children with acute pyelonephritis. Nephrology 2005 10(5):487-90.
  71. Elli M, Söylemezoğlu O, Erbas D, Bakkaloglu SA, Buyan N, Özkaya O, Hasanoğlu E.  Plasma and urine nitric oxide levels in healthy Turkish children. Pediatr Nephrol. 2005;20(11): 1605-9
  72. Kalman S, Buyan N, Yurekli M, Özkaya O, Bakkaloglu S, Soylemezoglu O.  Plasma and urinary adrenomedullin levels in children with renal parenchymal scar and vesicoureteral reflux. Pediatr Nephrol. 2005 20(8):1111-5
  73. Özkaya O, Buyan N, Erol I, Atalay Y, Beyazova U, Sahin F, Soylemezoglu O.  The relationship between urinary calcium, sodium, and potassium excretion in full-term healthy newborns. Turk J Pediatr. 2005;47(1):39-45.
  74. Saglıker Y, Balal M, Sagliker Ozkaynak P, Paydas S, Sagliker C, Sabit Sagliker H, Kiralp N, Mumin Adam S, Tuncer I, Gonlusen G, Esenturk M, Gocmez E, Taskapan H, Yeksan M, Kobaner E, Özkaya O, Yuksekgonul M, Emir I, Cengiz N, Onder Isik I, Bilginer O, Guler T, Yakar H, Sarsmaz N, Dilaver S, Akoglu B, Basgumus M, Chirik E.  Sagliker syndrome: uglifying human face appearance in late and severe secondary hyperparathyroidism in chronic renal failure. Semin Nephrol. 24(5):449-55.
  75. Atasever T, Özkaya O, Abamor E, Soylemezoglu O, Buyan N, Unlu M,  99mTc ethylene dicysteine scintigraphy for diagnosing cortical defects in acute pyelonephritis: a comparative study with 99mTc dimercaptosuccinic acid. Nucl Med Commun. 2004 25(9):967-70.
  76. Tunca M, Akar S, Onen F, Ozdogan H, Kasapcopur O, Yalcinkaya F, Tutar E, Ozen S, Topaloglu R, Yilmaz E, Arici M, Bakkaloglu A, Besbas N, Akpolat T, Dinc A, Erken S Arslan, Y Balaban, F Batman, Y Bayraktar, S Apras, M Calguneri, A Duzova, T Kav, F Ozaltin, H Simsek, B Sivri, GTatar. N Akkoc, S Kavukcu, A Soylu, M Turkmen, E Unsal. N Arisoy, S Caliskan, F Gogus, S Masatlioglu, L Sever. N Akkok, N Cakar, N Kara, H Kocak, S Ozalp. I Bilge, S Emre, A Gul, S Kamali, B Sadikoglu, F Selcukbiricik, A Sirin, A Sucu. K Bek, M Bulbul, A Delibaş, G Demircin, O Erdogan, A Oner. M Ekim, N Ozkaya, Ma Tekin. E Demirkaya, HErdem, F Gok, SPay. I Islek, Y Kabasakal, G Keser, M Ozmen. EAkoglu, Atagunduz, HDireskeneli, M Temel, S Tuglular. NBuyan, S Bakkaloglu, U Derici, B Goker, S Kalman, O Ozkaya, R Dusunsel, Z Gunduz, M Poyrazoglu. C Korkmaz. E Baskin, H K Koseoglu, U Saatci, E Yucel. E Coban, G Yakupoglu. F Oktem, E Tunc. Familial Mediterranean Fever (FMF) in Turkey Results of a Nationwide Multicenter Study, Medicine, 2005;  84 (1):1-11
  77. Söylemezoğlu O, Özkaya O, Gönen S, Mısırlıoğlu, M, Kalman S, Buyan N.  Vitamin D receptor gene polymorphism in hypercalciuric children. Pediatr Nephrol. 2004 19(7):724-7.
  78. Özkaya O, Derici U, Buyan N, Dalgic A, Dalgic B, Cingi E, Kitapci M, Sindel S, Hasanoglu E.   Gastric emptying time in renal transplant recipients treated with cyclosporine. Transplant Proc. 2003; 35(8),2927-30
  79. Buyan N, Özkaya O, Bideci A, Söylemezoğlu O, Cinaz P, Gonen S, Kalman S, Bakkaloğlu S, Hasanoglu E.  Leptin, soluble leptin receptor, and transforming growth factor-beta1 levels in minimal change nephrotic syndrome. Pediatr Nephrol. 2003;18(10):1009-14.
  80. Özkaya O, Söylemezoğu O, Mısırlıoğlu M, Gönen S, Buyan N, Hasanoglu E.  Polymorphisms in the vitamin D receptor gene and the risk of calcium nephrolithiasis in children. Eur Urol. 2003 44(1):150-4.
  81. Söylemezoglu O, Özkaya O, Erbas D, Akkok N, Buyan N, Hasanoglu E.  Nitric oxide in Henoch-Schonlein purpura. Scand J Rheumatol. 2002;31(5):271-4.
  82. Söylemezoğlu O, Derici U, Arınsoy T, Hasanoglu A, Özkaya O, DalgıçA, Bideci A, Buyan N, Hasanoglu E.  Changes in bone mineral density, insulin-like growth fact or-1 and insulin-like growth factor binding protein-3 in kidney transplant recipients. A longitudinal study. Nephron. 2002;91(3):468-73.
  83. Özkaya O, Canturk F, Alaylı G,  Akpolat I, Belet U, Diren B.  An unusual presentation of familial Mediterranean fever with prolonged hip pain and amyloidosis. Scand J Rheumatol. 2004;33(2):123-5
  84. Kalman S, Bakkaloglu SA, Özkaya O, Buyan N, Söylemezoğlu O.  Measles: a rare communicable disease in a child with renal transplantation. Pediatr Transplant;6(5):432-4.
  85. Derici U, Özkaya O, Arinsoy T, Erbas D, Sindel S, Bali M, Buyan N, Hasanoglu E, Söylemezoğlu O.  Increased plasma nitrate levels in patients with crush syndrome in the Marmara earthquake. Clin Chim Acta. 2002: 322(1-2):99-103.
  86. Özkaya O, Kalman S, Bakkaloglu S, Buyan N, Soylemezoglu O.  Cyclosporine-associated facial paralysis in a child with renal transplant. Pediatr Nephrol 2002; 17(7):544-6
  87. Söylemezoglu O, Özkaya O, Derici U, Memis L, Kalman S, Buyan N.  A 10-year-old girl with renal failure and granulomas.Am J Kidney Dis. 2002 39(6):1323-7.
  88. Karadeniz A, Oğuz A, Atoğlu Ö, Çitak C, Buyan N, Pınarlı G, Özkaya O, Kapucu Ö.Primary renal lymphoma and xanthogranulomatous pyelonephritis in children. J Nephrol.2002;30 (15):1597-600
  89. Türktaş I, Özkaya O, Bostanci I, Bideci A, Cinaz P.  Safety of inhaled corticosteroid therapy in young children with asthma. Ann Allergy Asthma Immunol. 2001 86(6):649-54

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