Published January 31, 2023 | Version https://impactfactor.org/PDF/IJPCR/15/IJPCR,Vol15,Issue1,Article53.pdf
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A Cross Sectional Study on Correlation of Serum C-Reactive Protein Level with Cognitive Deficits in Patients with Schizophrenia

  • 1. Senior Resident, Department of Psychiatry, Government Karur Medical College, Karur
  • 2. Senior Resident, Department of Psychiatry, Government Ariyalur Medical College
  • 3. Senior Resident, Department of Psychiatry, Srinivasan Medical College and Hospital, Samayapuram, Trichy
  • 4. Senior Resident, Department of Psychiatry, Thanjavur Medical College, Thanjavur

Description

Background: Serum levels of C-reactive protein (CRP) were thought to be altered in schizophrenia, the association between autoimmunity, chronic inflammation, and psychosis is not new. Hence this study was planned to confirm the association between CRP level and cognitive performance and to determine whether CRP was a new biological indicator with the potential clinical applications in Schizoprenia patients. Methods: This study was done as a Cross sectional study, in 60 cases of schizophrenia for period of one year done after obtaining ethical clearance, from the Institutional Ethics Committee, Government Mohan Kumaramangalam Medical College, Salem. The neurocognitive assessment tools used in this study are: a). Attention – digit span. b) Verbal memory – Rey auditory verbal learning test. C) Visual memory – Rey Osterrieth complex figure test d) Verbal fluency – COWAT – controlled oral word association test. For executive functions – Stroop colour test, Trail Making Test, were used. Assesment of CRP done by Nephelometry. Results: There were significant differences in the cognitive subdomain analyses among the two groups based on CRP level. Serum CRP levels were found positively correlated with neurocognitive assessment tools. Conclusion: This study supports the Neuroinflammatory theory of schizophrenia as evidenced by the rise in serum C – reactive protein values in the course of illness and there exists a positive correlation between serum C – reactive protein level and Cognitive deficits. Serial measurements of serum C – reactive protein and cognitive deficits are to be assessed, to know their fate longitudinally, over the period of time.

 

 

 

Abstract (English)

Background: Serum levels of C-reactive protein (CRP) were thought to be altered in schizophrenia, the association between autoimmunity, chronic inflammation, and psychosis is not new. Hence this study was planned to confirm the association between CRP level and cognitive performance and to determine whether CRP was a new biological indicator with the potential clinical applications in Schizoprenia patients. Methods: This study was done as a Cross sectional study, in 60 cases of schizophrenia for period of one year done after obtaining ethical clearance, from the Institutional Ethics Committee, Government Mohan Kumaramangalam Medical College, Salem. The neurocognitive assessment tools used in this study are: a). Attention – digit span. b) Verbal memory – Rey auditory verbal learning test. C) Visual memory – Rey Osterrieth complex figure test d) Verbal fluency – COWAT – controlled oral word association test. For executive functions – Stroop colour test, Trail Making Test, were used. Assesment of CRP done by Nephelometry. Results: There were significant differences in the cognitive subdomain analyses among the two groups based on CRP level. Serum CRP levels were found positively correlated with neurocognitive assessment tools. Conclusion: This study supports the Neuroinflammatory theory of schizophrenia as evidenced by the rise in serum C – reactive protein values in the course of illness and there exists a positive correlation between serum C – reactive protein level and Cognitive deficits. Serial measurements of serum C – reactive protein and cognitive deficits are to be assessed, to know their fate longitudinally, over the period of time.

 

 

 

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Additional details

Dates

Accepted
2022-12-20

References

  • 1. Taylor M. A., & Abrams R. Cognitive impairment in schizophrenia. The American Journal of Psychiatry. 1984;141(2): 196-201. 2. Erin Walling, MSIV and Phebe Tucker MD. Inflammation, Immune Function, and Schizophrenia: An Overview Psychiatric Times. May 19, 2017; 34(5). 3. Pepys M. B., & Hirschfield G. M. Creactive protein: a critical update. Journal of Clinical Investigation. 2003;111(12): 1805–1812. 4. Yolken RH, Torrey EF. Viruses, schizophrenia and bipolar disorder. Clin Microbial Rev. 1995; 8:1311-1345. 5. Nazila Diyanoosh, Omid Rezaei, Saeede Masafi, Ali Nazeri, Hadis Hoseynzade. Relationship of Blood C- reactive Protein level and Cognitive deficit in patients with Schizophrenia. International Journal of Collaborative Research on Internal Medicine and Public Health 6. Weuve J, Ridker PM, Look NR, Buring JE, Grodstein F. Epidemiology. High and sensitivity C- reactive protein and cognitive function in older women. 2006; 17: 183- 189 7. Dickerson F., Stallings C., Origoni A., Vaughan C., Khushalani S., Yang S., & Yolken R. C-reactive protein is elevated in schizophrenia. Schizophrenia Research. 2013;143(1):198–202 8. Shagiv shifman et al. AJHG. A Highly Significant Association between a COMT Haplotype and Schizophrenia. December 2002; 71(6):1296-1302. 9. Seymour S. Kety. The significance of genetic factors in the etiology of schizophrenia: Results from the national study of adoptees in Denmark J Psychiatr Res 1987;21(4):423-9. 10. Graham Robertson and Pamela J Taylor. Some cognitive correlates of schizophrenic illnesses. Psychological Medicine. 15(01): 81.11. Thompson, D., Pepys, M. B., & Wood, S. P. The physiological structure of human C-reactive protein and its complex with phosphocholine. 1999. 12. Brian J. Miller, Nick Culpepper, Mark H. Rapaport. C-Reactive Protein Levels in Schizophrenia. A Review and MetaAnalysis. Clinical Schizophrenia & Related Psychoses. 7(4): 223–230. 13. Yaggffe K, Lindquist K, Penninx BW, Simonsick EM, Pahor N, kritchevsky S, et. Inflammatory markers and cognition in well-functioning African American and white elders. Neurology 2003;61:76- 80.