Araştırma Makalesi
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Koroner arter bypass greft ameliyatı geçiren hastalarda serum YKL-40, HMGB1, BDNF, NGF düzeyleri ve bilişsel disfonksiyonlar arasındaki ilişkinin incelenmesi

Yıl 2025, Cilt: 15 Sayı: 4, 374 - 381, 15.12.2025
https://doi.org/10.16919/bozoktip.1597904

Öz

ÖZET
Amaç: Postoperative bilişsel disfonksiyon (POBD) demans, dikkat eksikliği, hafıza ve davranışsal bozulmalar gibi planlama yapamama gibi semptomlarla karakterize bir tablodur. Pek çok cerrahi işlem sonrası rastlanabilmekle beraber kardiak cerrahi sonrası görülme sıklığı fazladır. Bu çalışmada, nöroinflamasyon ve nörotrofik faktör parametreleri ile kognitif test arasındaki korelasyon varlığını göstermeyi amaçladık.
Gereç ve yöntemler: Elektif koroner arter bypass greft ameliyatı olan 24 hasta prospektif olarak incelendi. Preoperatif 2.gün ve postoperatif 5-7.gün serum örnekleri alındı ve eş zamanlı olarak kognitif test uygulandı.YKL-40, BDNF, NGF ve HMGB1 ile kognitif test skorları arasındaki korelasyon değerlendirildi.
Bulgular: Çalışma sonucunda NGF değerinde postoperatif anlamlı düşüklük bulunmuştur. (p=0.006). NGF ile postoperatif kognitif test arasında pozitif korelasyon saptanmıştır. (r=0.542, p=0.006).Bellek puanı postoperatif artmış (p<0.0001),oryantasyon ve uyanıklık ise postoperatif azalmış olarak bulundu. (p=0.032 ve p=0.022, sırasıyla).Preoperatif ve postoperatif HMGB1 (r=0.529, p=0.008), NGF (r=0.454, p=0.026) ve kognitif test skorları (r=0.825, p <0.0001) arasında ise pozitif korelasyon saptandı. Postoperatif kognitif test skorları ile yaş (r=-0.447, p=0.029), kardiyopulmoner bypass (r=-0.403, p=0.039) ve operasyon süresi (r=-0.506, p=0.012) arasında ise negatif korelasyon görüldü.
Sonuç: Çalışmamız sonucunda NGF ‘nin POBD değerlendirmesinde önemli bir parametre olabileceğine dair veri elde edilmiştir. HMGB1’in kardiak hastalıklarda bir marker olarak araştırılması gündeme gelmiştir. Kognitif fonksiyonlar ile nöroinflamasyon ve nörotrofik parametreler arasındaki ilişkinin detaylandırılmasının uygun tanı ve tedavi stratejilerinin belirlenmesi açısından önemli olduğunu düşünüyoruz.

Proje Numarası

01/2020-05_5856.

Kaynakça

  • 1. Melly L, Torregrossa G, Lee T, Jansens JL, Puskas JD: Fifty years of coronary artery bypass grafting. J Thorac Dis 2018;10(3):1960-7.
  • 2. Fox, JP, Suter LG, Wang K, Wang Y, Krumholz HM,Ross JS. Hospitalbased, acute care use among patients within 30 days of discharge after coronary artery bypass surgery. Ann Thorac Surg. 2013; 96(1):96-104.
  • 3. Hannan EL, Zhong Y, Lahey SJ, Culliford AT, Gold JP, Smith CR, et al.30-day readmissions after coronary artery bypass graft surgery in New York State. JACC Cardiovasc Interv. 2011;4(5), 569-76.
  • 4. Li Z, Amstrong EJ, Parker JP, Danielsen B, Romano PS. Hospital variation in readmission after coronary artery bypass surgery in California. Circ Cardiovasc Qual Outcomes. 2012;5(5):729-37.
  • 5. Ramponi F, Seco M, Brereton RJL, Gaudino MFL, Puskas JD, Calafiore AM,et al. Toward stroke-free coronary surgery: The role of the anaortic off-pump bypass technique. J Card Surg. 2021; 36(4): 1499-510.
  • 6. Gao L, Taha R, Gauvin D, Othmen LB, Wang Y, Blaise G. Postoperative cognitive dysfunction after cardiac surgery. Chest. 2005 Nov;128(5):3664-70.
  • 7. Kok WF, van Harten AE, Koene BM, Mariani MA, Koerts J, Tucha O, et al. A pilot study of cerebral tissue oxygenation and postoperative cognitive dysfunction among patients undergoing coronary artery bypass grafting randomised to surgery with or without cardiopulmonary bypass* Anaesthesia. 2014 Jun;69(6):613-22.
  • 8. Bedford PD. Adverse cerebral effects of anaesthesia on old people. Lancet. 1955 Aug 6;269(6884):259-63.
  • 9. Rocco ML, Soligo M, Manni L, Aloe L. Nerve growth factor: early studies and recent clinical trials. Curr Neuropharmacol. 2018;16(10):1455-65.
  • 10. Shigeno T, Mima T, Takakura K, Graham DI, Kato G, Hashimoto Y, et al. Amelioration of delayed neuronal death in the hippocampus by nerve growth factor. J Neurosci. 1991; 11(9): 2914-9.
  • 11. Barde YA, Edgar D, Thoenen H. Purification of a new neurotrophic factor from mammalian brain. The EMBO J. 1982;1(5):549-53.
  • 12. Zhang F, Zhu ZQ, Liu DX, Zhang C, Gong QH, Zhu YH. Emulsified isoflurane anesthesia decreases brain-derived neurotrophic factor expression and induces cognitive dysfunction in adult rats. Exp Ther Med. 2014 Aug;8(2):471-7.
  • 13. Penadés R, López-Vílchez I, Catalán R, Arias B, GonzálezRodríguez A, García-Rizo C,et al. BDNF as a marker of response to cognitive remediation in patients with schizophrenia: a randomized and controlled trial. Schizophr Res. 2018; 197:458-64.
  • 14. Fink MP. Bench-to-bedside review: High-mobility group box 1 and critical illness. Crit Care. 2007;11(5):229.
  • 15. Goldstein RS, Gallowitsch-Puerta M, Yang L, Rosas-Ballina M, Huston JM, Czura CJ, et al. Elevated high-mobility group box 1 levels in patients with cerebral and myocardial ischemia. Shock. 2006;25(6): 571-4.
  • 16. He HJ, Wang Y, Le Y, Duan KM, Yan XB, Liao Q, et al. Surgery Upregulates High Mobility Group Box-1 and Disrupts the Blood-Brain Barrier Causing Cognitive Dysfunction in Aged Rats. CNS Neurosci Ther. 2012;18(12): 994-1002.
  • 17. Lananna BV, McKee CA, King MW, Del-Aguila JL, Dimitry JM, Farias FH, et al. Chi3l1/YKL-40 is controlled by the astrocyte circadian clock and regulates neuroinflammation and Alzheimer’s disease pathogenesis. Sci Transl Med. 2020;12(574): eaax3519.
  • 18. Melah KE, Lu SYF, Hoscheidt SM, Alexander AL, Adluru N, Destiche DJ,et al. Cerebrospinal fluid markers of Alzheimer’s disease pathology and microglial activation are associated with altered white matter microstructure in asymptomatic adults at risk for Alzheimer’s disease. J Alzheimers Dis. 2016;50(3):873-86.
  • 19. Craig-Schapiro R, Perrin RJ, Roe CM, Xiong C, Carter D, Cairns NJ, et al. YKL-40: a novel prognostic fluid biomarker for preclinical Alzheimer's disease. Biol Psychiatry. 2010;68(10):903-12.
  • 20. Alcolea D, Vilaplana E, Pegueroles J, Montal V, Sanchez-Juan P, Gonzalez-Suarez A, et al. Relationship between cortical thicknessand cerebrospinal fluid YKL-40 in predementia stages of Alzheimer’s disease. Neurobiol Aging. 2015;36(6):2018-23.
  • 21. Deng Y, Li G, Chang D, Su X. YKL-40 as a novel biomarker in cardio metabolic disorders and inflammatory diseases. Clin Chim Acta. 2020; 511:40-6.
  • 22. Nasreddine ZS, Phillips NA, Bédirian V, Charbonneau S, Whitehead V, Collin I, et al. The Montreal Cognitive Assessment, MoCA: a brief screening tool for mild cognitive impairment. J Am Geriatr Soc. 2005;53(4):695-9.
  • 23. Ozdilek B, Kenangil G.Validation of the Turkish Version of the Montreal Cognitive Assessment Scale (MoCA-TR) in patients with Parkinson’s disease. Clin Neuropsychol. 2014; 28(2):333-43.
  • 24. Kang JM, Cho YS, Park S, Lee BH, Sohn BK, Choi CH, et al. Montreal cognitive assessment reflects cognitive reserve. BMC Geriatr. 2018; 18(1):1-8.
  • 25. Aiello, EN, Gramegna C., Esposito A, Gazzaniga V, Zago S, Difonzo T, et al. The Montreal Cognitive Assessment (MoCA): updated norms and psychometric insights into adaptive testing from healthy individuals in Northern Italy. Aging Clin Exp Res. 2022;1-8.
  • 26. Ramos OV, Torterolo P, Lim V, Chase MH, Sampogna S, Yamuy J. The role of mesopontine NGF in sleep and wakefulness. Brain Res. 2011;1413:9-23.
  • 27. Vingerhoets G, Jannes C, Soete GD, Nooten GV. Prospective evaluation of verbal memory performance after cardiopulmonary bypass surgery. J Clin Exp Neuropsychol. 1996; 18(2): 187-96.
  • 28. Bokeriia LA, Golukhova EZ, Polunina AG, Davydov DM, Begachev AV. Neural correlates of cognitive dysfunction after cardiac surgery. Brain Res Rev. 2005;50/2 pp. 266-74.
  • 29. Selnes OA, Grega MA, Borowicz Jr LM, Royall RM, McKhann GM, Baumgartner WA. Cognitive changes with coronary artery disease: a prospective study of coronary artery bypass graft patients and nonsurgical controls. Ann Thorac Surg. 2003; 75(5): 1377-86.
  • 30. Steinmetz J, Christensen KB, Lund T, Lohse N, Rasmussen LS; ISPOCD Group. Long-term consequences of postoperative cognitive dysfunction. Anesthesiology. 2009 Mar;110(3):548-55.
  • 31. Saunderson EA, Spiers H, Mifsud KR, Gutierrez-Mecinas M, Trollope AF, Shaikh A, et al. Stress-induced gene expression and behavior are controlled by DNA methylation and methyl donor availability in the dentate gyrus. Proc Natl Acad Sci U S A. 2016 ;113(17):4830-5.
  • 32. Pettigrew C, Soldan A. Defining cognitive reserve and implications for cognitive aging. Curr Neurol Neurosci Rep. 2019; 19(1):1.
  • 33. Patron E, Benvenuti SM, Zanatta P, Polesel E, Palomba D. Preexisting depressive symptoms are associated with long-term cognitive decline in patients after cardiac surgery. Gen Hosp Psychiatry. 2013;35(5): 472-9.
  • 34. Liu D, Ghani D, Wain J, Szeto WY, Laudanski K. Concomitant elevated serum levels of tenascin, MMP-9 and YKL-40, suggest ongoing remodeling of the heart up to 3 months after cardiac surgery after normalization of the revascularization markers. Eur J Med Res. 2022; 27(1):208.
  • 35. Malmeström C, Axelsson M, Lycke J, Zetterberg H, Blennow K, Olsson B. CSF levels of YKL-40 are increased in MS and decrease with immunosuppressive treatment. J Neuroimmunol. 2014; 269(1-2):87- 9.

Evaluation of the relationship between serum YKL-40, HMGB1, BDNF, NGF levels, and cognitive functions in patients undergoing coronary artery bypass grafting

Yıl 2025, Cilt: 15 Sayı: 4, 374 - 381, 15.12.2025
https://doi.org/10.16919/bozoktip.1597904

Öz

ABSTRACT
Objective: Postoperative cognitive dysfunction (POCD) is characterized by symptoms that may inhibit planning, such as dementia, memory loss, attention deficiency, and behavioral impairment. Although it is frequently in cardiac surgery, all manner of surgery can cause POCD. In this manuscript, we aimed to show the existence of a correlation among neuroinflammation markers High-mobility group box 1 (HMGB1) and YKL-40 and neurotrophic factors; brain-derived neurotrophic factor (BDNF) and Nerve growth factor (NGF), with the cognitive functions.
Material and methods: Twenty-four patients who underwent coronary artery bypass graft (CABG) were analyzed prospectively. Preoperative 2nd and postoperative 5-7th day blood samples were collected, and we performed cognitive test synchronously. Correlations between YKL-40, BDNF, NGF, HMGB1, and cognitive test score (CTS) were examined.
Results: We found a significant postoperative decrease in NGF (p=0.006). There was a positive correlation between NGF and postoperative CTS (r=0.542, p=0.006). Postoperative memory score was increased (p<0.0001), but orientation and vigilance scores were decreased (p=0.032 and p=0.022, respectively). There were also self-reliant positive correlations between preoperative and postoperative CTS (r=0.825, p <0.0001), preoperative and postoperative HMGB1 (r=0.529, p=0.008) and preoperative and postoperative NGF scores (r=0.454, p=0.026). Postoperative CTS had a negative correlation with age (r=-0.447, p=0.029), duration of operation (r=-0.506, p=0.012), and cardiopulmonary bypass (CPB) (r=-0.403, p=0.039).
Conclusion: Data in this study suggested that NGF can be a notable parameter in POCD, and HMGB1 may be a crucial marker in heart disorders. To define appropriate diagnosis and treatment strategies, it is essential to detail the relationship between cognitive functions, neuroinflammation, and neurotrophic factors.

Etik Beyan

The authors declare that they have no competing interests.

Destekleyen Kurum

Gazi University Scientific Investment Project Department supported this study within the scope of Project number 01/2020-05_5856.

Proje Numarası

01/2020-05_5856.

Teşekkür

-

Kaynakça

  • 1. Melly L, Torregrossa G, Lee T, Jansens JL, Puskas JD: Fifty years of coronary artery bypass grafting. J Thorac Dis 2018;10(3):1960-7.
  • 2. Fox, JP, Suter LG, Wang K, Wang Y, Krumholz HM,Ross JS. Hospitalbased, acute care use among patients within 30 days of discharge after coronary artery bypass surgery. Ann Thorac Surg. 2013; 96(1):96-104.
  • 3. Hannan EL, Zhong Y, Lahey SJ, Culliford AT, Gold JP, Smith CR, et al.30-day readmissions after coronary artery bypass graft surgery in New York State. JACC Cardiovasc Interv. 2011;4(5), 569-76.
  • 4. Li Z, Amstrong EJ, Parker JP, Danielsen B, Romano PS. Hospital variation in readmission after coronary artery bypass surgery in California. Circ Cardiovasc Qual Outcomes. 2012;5(5):729-37.
  • 5. Ramponi F, Seco M, Brereton RJL, Gaudino MFL, Puskas JD, Calafiore AM,et al. Toward stroke-free coronary surgery: The role of the anaortic off-pump bypass technique. J Card Surg. 2021; 36(4): 1499-510.
  • 6. Gao L, Taha R, Gauvin D, Othmen LB, Wang Y, Blaise G. Postoperative cognitive dysfunction after cardiac surgery. Chest. 2005 Nov;128(5):3664-70.
  • 7. Kok WF, van Harten AE, Koene BM, Mariani MA, Koerts J, Tucha O, et al. A pilot study of cerebral tissue oxygenation and postoperative cognitive dysfunction among patients undergoing coronary artery bypass grafting randomised to surgery with or without cardiopulmonary bypass* Anaesthesia. 2014 Jun;69(6):613-22.
  • 8. Bedford PD. Adverse cerebral effects of anaesthesia on old people. Lancet. 1955 Aug 6;269(6884):259-63.
  • 9. Rocco ML, Soligo M, Manni L, Aloe L. Nerve growth factor: early studies and recent clinical trials. Curr Neuropharmacol. 2018;16(10):1455-65.
  • 10. Shigeno T, Mima T, Takakura K, Graham DI, Kato G, Hashimoto Y, et al. Amelioration of delayed neuronal death in the hippocampus by nerve growth factor. J Neurosci. 1991; 11(9): 2914-9.
  • 11. Barde YA, Edgar D, Thoenen H. Purification of a new neurotrophic factor from mammalian brain. The EMBO J. 1982;1(5):549-53.
  • 12. Zhang F, Zhu ZQ, Liu DX, Zhang C, Gong QH, Zhu YH. Emulsified isoflurane anesthesia decreases brain-derived neurotrophic factor expression and induces cognitive dysfunction in adult rats. Exp Ther Med. 2014 Aug;8(2):471-7.
  • 13. Penadés R, López-Vílchez I, Catalán R, Arias B, GonzálezRodríguez A, García-Rizo C,et al. BDNF as a marker of response to cognitive remediation in patients with schizophrenia: a randomized and controlled trial. Schizophr Res. 2018; 197:458-64.
  • 14. Fink MP. Bench-to-bedside review: High-mobility group box 1 and critical illness. Crit Care. 2007;11(5):229.
  • 15. Goldstein RS, Gallowitsch-Puerta M, Yang L, Rosas-Ballina M, Huston JM, Czura CJ, et al. Elevated high-mobility group box 1 levels in patients with cerebral and myocardial ischemia. Shock. 2006;25(6): 571-4.
  • 16. He HJ, Wang Y, Le Y, Duan KM, Yan XB, Liao Q, et al. Surgery Upregulates High Mobility Group Box-1 and Disrupts the Blood-Brain Barrier Causing Cognitive Dysfunction in Aged Rats. CNS Neurosci Ther. 2012;18(12): 994-1002.
  • 17. Lananna BV, McKee CA, King MW, Del-Aguila JL, Dimitry JM, Farias FH, et al. Chi3l1/YKL-40 is controlled by the astrocyte circadian clock and regulates neuroinflammation and Alzheimer’s disease pathogenesis. Sci Transl Med. 2020;12(574): eaax3519.
  • 18. Melah KE, Lu SYF, Hoscheidt SM, Alexander AL, Adluru N, Destiche DJ,et al. Cerebrospinal fluid markers of Alzheimer’s disease pathology and microglial activation are associated with altered white matter microstructure in asymptomatic adults at risk for Alzheimer’s disease. J Alzheimers Dis. 2016;50(3):873-86.
  • 19. Craig-Schapiro R, Perrin RJ, Roe CM, Xiong C, Carter D, Cairns NJ, et al. YKL-40: a novel prognostic fluid biomarker for preclinical Alzheimer's disease. Biol Psychiatry. 2010;68(10):903-12.
  • 20. Alcolea D, Vilaplana E, Pegueroles J, Montal V, Sanchez-Juan P, Gonzalez-Suarez A, et al. Relationship between cortical thicknessand cerebrospinal fluid YKL-40 in predementia stages of Alzheimer’s disease. Neurobiol Aging. 2015;36(6):2018-23.
  • 21. Deng Y, Li G, Chang D, Su X. YKL-40 as a novel biomarker in cardio metabolic disorders and inflammatory diseases. Clin Chim Acta. 2020; 511:40-6.
  • 22. Nasreddine ZS, Phillips NA, Bédirian V, Charbonneau S, Whitehead V, Collin I, et al. The Montreal Cognitive Assessment, MoCA: a brief screening tool for mild cognitive impairment. J Am Geriatr Soc. 2005;53(4):695-9.
  • 23. Ozdilek B, Kenangil G.Validation of the Turkish Version of the Montreal Cognitive Assessment Scale (MoCA-TR) in patients with Parkinson’s disease. Clin Neuropsychol. 2014; 28(2):333-43.
  • 24. Kang JM, Cho YS, Park S, Lee BH, Sohn BK, Choi CH, et al. Montreal cognitive assessment reflects cognitive reserve. BMC Geriatr. 2018; 18(1):1-8.
  • 25. Aiello, EN, Gramegna C., Esposito A, Gazzaniga V, Zago S, Difonzo T, et al. The Montreal Cognitive Assessment (MoCA): updated norms and psychometric insights into adaptive testing from healthy individuals in Northern Italy. Aging Clin Exp Res. 2022;1-8.
  • 26. Ramos OV, Torterolo P, Lim V, Chase MH, Sampogna S, Yamuy J. The role of mesopontine NGF in sleep and wakefulness. Brain Res. 2011;1413:9-23.
  • 27. Vingerhoets G, Jannes C, Soete GD, Nooten GV. Prospective evaluation of verbal memory performance after cardiopulmonary bypass surgery. J Clin Exp Neuropsychol. 1996; 18(2): 187-96.
  • 28. Bokeriia LA, Golukhova EZ, Polunina AG, Davydov DM, Begachev AV. Neural correlates of cognitive dysfunction after cardiac surgery. Brain Res Rev. 2005;50/2 pp. 266-74.
  • 29. Selnes OA, Grega MA, Borowicz Jr LM, Royall RM, McKhann GM, Baumgartner WA. Cognitive changes with coronary artery disease: a prospective study of coronary artery bypass graft patients and nonsurgical controls. Ann Thorac Surg. 2003; 75(5): 1377-86.
  • 30. Steinmetz J, Christensen KB, Lund T, Lohse N, Rasmussen LS; ISPOCD Group. Long-term consequences of postoperative cognitive dysfunction. Anesthesiology. 2009 Mar;110(3):548-55.
  • 31. Saunderson EA, Spiers H, Mifsud KR, Gutierrez-Mecinas M, Trollope AF, Shaikh A, et al. Stress-induced gene expression and behavior are controlled by DNA methylation and methyl donor availability in the dentate gyrus. Proc Natl Acad Sci U S A. 2016 ;113(17):4830-5.
  • 32. Pettigrew C, Soldan A. Defining cognitive reserve and implications for cognitive aging. Curr Neurol Neurosci Rep. 2019; 19(1):1.
  • 33. Patron E, Benvenuti SM, Zanatta P, Polesel E, Palomba D. Preexisting depressive symptoms are associated with long-term cognitive decline in patients after cardiac surgery. Gen Hosp Psychiatry. 2013;35(5): 472-9.
  • 34. Liu D, Ghani D, Wain J, Szeto WY, Laudanski K. Concomitant elevated serum levels of tenascin, MMP-9 and YKL-40, suggest ongoing remodeling of the heart up to 3 months after cardiac surgery after normalization of the revascularization markers. Eur J Med Res. 2022; 27(1):208.
  • 35. Malmeström C, Axelsson M, Lycke J, Zetterberg H, Blennow K, Olsson B. CSF levels of YKL-40 are increased in MS and decrease with immunosuppressive treatment. J Neuroimmunol. 2014; 269(1-2):87- 9.
Toplam 35 adet kaynakça vardır.

Ayrıntılar

Birincil Dil İngilizce
Konular Kalp ve Damar Cerrahisi
Bölüm Araştırma Makalesi
Yazarlar

Başak Koçak 0000-0002-3767-0687

Erkan İriz 0000-0003-4754-733X

Sureyya Barun 0000-0003-3726-8177

Özlem Gülbahar Zengin 0000-0003-0450-4305

Mustafa Arslan 0000-0003-4882-5063

Proje Numarası 01/2020-05_5856.
Gönderilme Tarihi 11 Aralık 2024
Kabul Tarihi 4 Eylül 2025
Yayımlanma Tarihi 15 Aralık 2025
Yayımlandığı Sayı Yıl 2025 Cilt: 15 Sayı: 4

Kaynak Göster

APA Koçak, B., İriz, E., Barun, S., … Gülbahar Zengin, Ö. (2025). Evaluation of the relationship between serum YKL-40, HMGB1, BDNF, NGF levels, and cognitive functions in patients undergoing coronary artery bypass grafting. Bozok Tıp Dergisi, 15(4), 374-381. https://doi.org/10.16919/bozoktip.1597904
AMA Koçak B, İriz E, Barun S, Gülbahar Zengin Ö, Arslan M. Evaluation of the relationship between serum YKL-40, HMGB1, BDNF, NGF levels, and cognitive functions in patients undergoing coronary artery bypass grafting. Bozok Tıp Dergisi. Aralık 2025;15(4):374-381. doi:10.16919/bozoktip.1597904
Chicago Koçak, Başak, Erkan İriz, Sureyya Barun, Özlem Gülbahar Zengin, ve Mustafa Arslan. “Evaluation of the relationship between serum YKL-40, HMGB1, BDNF, NGF levels, and cognitive functions in patients undergoing coronary artery bypass grafting”. Bozok Tıp Dergisi 15, sy. 4 (Aralık 2025): 374-81. https://doi.org/10.16919/bozoktip.1597904.
EndNote Koçak B, İriz E, Barun S, Gülbahar Zengin Ö, Arslan M (01 Aralık 2025) Evaluation of the relationship between serum YKL-40, HMGB1, BDNF, NGF levels, and cognitive functions in patients undergoing coronary artery bypass grafting. Bozok Tıp Dergisi 15 4 374–381.
IEEE B. Koçak, E. İriz, S. Barun, Ö. Gülbahar Zengin, ve M. Arslan, “Evaluation of the relationship between serum YKL-40, HMGB1, BDNF, NGF levels, and cognitive functions in patients undergoing coronary artery bypass grafting”, Bozok Tıp Dergisi, c. 15, sy. 4, ss. 374–381, 2025, doi: 10.16919/bozoktip.1597904.
ISNAD Koçak, Başak vd. “Evaluation of the relationship between serum YKL-40, HMGB1, BDNF, NGF levels, and cognitive functions in patients undergoing coronary artery bypass grafting”. Bozok Tıp Dergisi 15/4 (Aralık2025), 374-381. https://doi.org/10.16919/bozoktip.1597904.
JAMA Koçak B, İriz E, Barun S, Gülbahar Zengin Ö, Arslan M. Evaluation of the relationship between serum YKL-40, HMGB1, BDNF, NGF levels, and cognitive functions in patients undergoing coronary artery bypass grafting. Bozok Tıp Dergisi. 2025;15:374–381.
MLA Koçak, Başak vd. “Evaluation of the relationship between serum YKL-40, HMGB1, BDNF, NGF levels, and cognitive functions in patients undergoing coronary artery bypass grafting”. Bozok Tıp Dergisi, c. 15, sy. 4, 2025, ss. 374-81, doi:10.16919/bozoktip.1597904.
Vancouver Koçak B, İriz E, Barun S, Gülbahar Zengin Ö, Arslan M. Evaluation of the relationship between serum YKL-40, HMGB1, BDNF, NGF levels, and cognitive functions in patients undergoing coronary artery bypass grafting. Bozok Tıp Dergisi. 2025;15(4):374-81.
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