Methamphetamine Alters Blood Brain Barrier Protein Expression in Mice, Facilitating Central Nervous System Infection by Neurotropic Cryptococcus neoformans
Autor: | Joshua D. Nosanchuk, Eliseo A. Eugenin, Jade M. Greco, Susana Frases, Luis R. Martinez |
---|---|
Rok vydání: | 2013 |
Předmět: |
Central nervous system
Meningitis Cryptococcal Biology Blood–brain barrier Methamphetamine Sepsis Mice Major Articles and Brief Reports chemistry.chemical_compound Parenchyma medicine Animals Immunology and Allergy Cryptococcus neoformans Tight Junction Proteins Tight junction Brain Meth medicine.disease biology.organism_classification Survival Analysis Mice Inbred C57BL Infectious Diseases medicine.anatomical_structure chemistry Blood-Brain Barrier Protein Biosynthesis Immunology Central Nervous System Stimulants Female Cell Adhesion Molecules Immunosuppressive Agents medicine.drug |
Zdroj: | The Journal of Infectious Diseases. 208:699-704 |
ISSN: | 1537-6613 0022-1899 |
Popis: | Methamphetamine (METH) is a drug of abuse that is a potent and highly addictive central nervous system (CNS) stimulant. The blood brain barrier (BBB) is a unique interface that in part functions to prevent microbial invasion of the CNS. The effects of METH on brain vasculature have not been studied extensively. We hypothesized that METH alters the BBB integrity, increasing susceptibility to CNS infection. Using a murine model of METH administration, we demonstrated that METH alters BBB integrity and modifies the expression of tight junction and adhesion molecules. Additionally, we showed that BBB disruption accelerates transmigration of the neurotropic fungus Cryptococcus neoformans into the brain parenchyma after systemic infection. Furthermore, METH-treated mice displayed increased mortality as compared to untreated animals. Our findings provide novel evidence of the impact of METH abuse on the integrity of the cells that comprise the BBB and protect the brain from infection. |
Databáze: | OpenAIRE |
Externí odkaz: |