Morphine and Its Effect on Blood Vessel Growth Factor in Brain Cells
Author Information
Author(s): Wen Hongxiu Lu, Yaman Yao, Honghong Buch, Shilpa
Primary Institution: Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, Nebraska, United States of America
Hypothesis
Does morphine exposure lead to increased vascular permeability in brain endothelial cells through the induction of PDGF-BB?
Conclusion
Morphine exposure increases PDGF-BB expression in human brain microvascular endothelial cells, leading to disruption of the endothelial barrier.
Supporting Evidence
- Morphine exposure resulted in a time-dependent increase in PDGF-BB expression.
- Naltrexone, an opioid receptor antagonist, abrogated morphine-mediated up-regulation of PDGF-BB.
- PDGF-BB was shown to disrupt the expression of the tight junction protein ZO-1 in endothelial cells.
- Functional assays indicated that morphine increased the permeability of the blood-brain barrier.
Takeaway
When brain cells are exposed to morphine, they produce more of a substance called PDGF-BB, which makes it easier for things to pass through the blood-brain barrier, potentially causing problems.
Methodology
The study involved treating human brain microvascular endothelial cells with morphine and assessing PDGF-BB expression through various biochemical assays.
Limitations
The study primarily focuses on in vitro models, which may not fully replicate in vivo conditions.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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