Abnormal gene and protein expression of inflammatory cytokines in the postmortem brain of schizophrenia patients

Immune function abnormalities have been implicated in the pathophysiology of schizophrenia (SZ). This is primarily based on the observation that the levels of proinflammatory cytokines are significantly increased in the serum of SZ patients compared with normal control (NC) subjects. However, it is...

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Bibliographic Details
Published in:Schizophrenia research Vol. 192; pp. 247 - 254
Main Authors: Pandey, Ghanshyam N., Rizavi, Hooriyah S., Zhang, Hui, Ren, Xinguo
Format: Journal Article
Language:English
Published: Netherlands Elsevier B.V 01.02.2018
Subjects:
Adolescent
Adult
Aged
Aged, 80 and over
Cytokines
Cytokines - genetics
Cytokines - metabolism
Female
Humans
IL-1β
IL-6
Male
Middle Aged
Postmortem brain
Postmortem Changes
Prefrontal Cortex - metabolism
Psychiatry
RNA, Messenger - metabolism
Schizophrenia
Schizophrenia - pathology
Suicide
TNF-α
Young Adult
Cytokines
TNF-α
Schizophrenia
Suicide
IL-1β
Postmortem brain
IL-6
ISSN:0920-9964, 1573-2509, 1573-2509
Online Access:Get full text
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Summary:Immune function abnormalities have been implicated in the pathophysiology of schizophrenia (SZ). This is primarily based on the observation that the levels of proinflammatory cytokines are significantly increased in the serum of SZ patients compared with normal control (NC) subjects. However, it is not known if similar cytokines abnormalities are also present in the brain of SZ patients. To further examine the involvement of inflammatory cytokines in the brain of SZ patients, we determined the protein and mRNA levels of TNF-α, IL-1β, IL-2, IL-6, IL-8, IL-10, IL-13, LTA and IL-1RA in the prefrontal cortex (PFC, Brodmann area 9) of SZ patients. We found that the protein and mRNA expression levels of the cytokines TNF-α and IL-6 are significantly increased and those of IL-10 are significantly decreased in the PFC of SZ patients. No difference in the protein and mRNA levels of IL-1β, IL-13, and IL-1RA was observed between SZ patients and NC subjects. The protein expression levels of IL-8 were significantly decreased and those of LTA were significantly increased in SZ patients, but no significant difference in the mRNA levels of IL-8 and LTA was observed between SZ patients and NC subjects. The levels of IL-2 were undetectable or very low in the postmortem brain of either SZ or NC subjects. These results suggest abnormalities of specific pro- and anti-inflammatory cytokines in the postmortem brain of SZ patients. These observations may have important implications in understanding the role of inflammatory cytokines in the pathophysiology of SZ.
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ISSN:0920-9964
1573-2509
1573-2509
DOI:10.1016/j.schres.2017.04.043