The cerebral microvasculature in schizophrenia: a laser capture microdissection study.

Area of Science:

• Neuroscience
• Genomics
• Vascular Biology

Background:

• Schizophrenia is linked to impaired brain energy supply and microvascular dysfunction.
• These findings suggest potential blood-brain barrier (BBB) dysfunction in schizophrenia patients.
• This study investigates the cerebral vascular endothelium at the transcriptomic level.

Purpose of the Study:

• To investigate molecular alterations in the cerebral vascular endothelium of schizophrenia patients.
• To explore gene expression differences in endothelial cells between schizophrenia patients and healthy controls.

Main Methods:

• Laser capture microdissection was used to isolate microvascular endothelial cells and neurons from post-mortem brain tissue.
• RNA was extracted, amplified, and analyzed using two independent microarray platforms (Affymetrix and CodeLink).
• Gene expression data was compared between schizophrenia patients and controls for both cell types.

Main Results:

• Reproducible differences in gene expression were observed in endothelial samples between schizophrenia patients and controls.
• Functional profiling indicated that the observed gene expression changes were primarily related to inflammatory processes.
• The methodology successfully detected predicted differences between neuronal and endothelial cell types.

Conclusions:

• This study provides preliminary evidence of molecular changes in the cerebral microvasculature of schizophrenia patients.
• Findings suggest a hypo-inflammatory state within the cerebral vascular endothelium in schizophrenia.
• Further research into the blood-brain barrier in schizophrenia is warranted.