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Updated: Jun 30, 2026

Induction of Leptomeningeal Cells Modification Via Intracisternal Injection
Published on: May 7, 2020
[Metalloproteinases in meningoencephalitis]
Ewa Pastuszka1, Agata Pabin, Marek Radkowski
1Zakład Immunopatologii Chorób Zakaźnych i Pasozytniczych, Akademii Medycznej w Warszawie. . evp@vp.pl
Abstract:
Meningoencephalitis remains a devastating disease with high morbidity and mortality. Despite advances in antibiotic treatment and critical care, mortality rate in bacterial meningoencephalitis is close to 25%. Moreover, neurological and neuropsychological sequelae emerge in up to 50% of survivors. Adverse outcome is significantly associated with events secondary to meningitis and damage of the blood-brain barrier. Several studies conducted on animals confirmed that matrix-metalloproteinases (MMP), a family of enzymes with major actions in the remodeling of exracellural matrix components facilitate this process which results in acute neurological complications. Gelatinases (MMP-2, MMP-9), the most complex family member, through degradation of gelatine and collagen IV play an important role in the pathogenesis of brain's inflamatory diseases (e.g. Guillian-Barre syndrom) and contribute to spreading the disease beyond the central nervous system. Infection (bacterial, viral or fungal) can lead to increased concentration and activity of metalloproteinases due to excessive enzyme's secretion or decrease in level of its natural inhibitors. A detailed analysis of those enzymes could help in developing new diagnostic and prognostic markers for meningoencephalitis and could facilitate new treatment approaches.
Insights
Matrix-metalloproteinases (MMP) are implicated in the severe neurological damage seen in meningoencephalitis. Understanding MMP activity could lead to better diagnostic markers and treatments for this devastating brain infection.
Area of Science:
- Neuroscience
- Biochemistry
- Pathology
Context:
- Meningoencephalitis is a severe brain infection with high mortality and significant long-term neurological deficits.
- Bacterial meningoencephalitis has a mortality rate of approximately 25%, with up to 50% of survivors experiencing lasting neurological or neuropsychological issues.
Purpose:
- To explore the role of matrix-metalloproteinases (MMP) in the pathogenesis of meningoencephalitis.
- To investigate how MMPs, particularly gelatinases (MMP-2, MMP-9), contribute to blood-brain barrier damage and neurological complications.
Summary:
- Matrix-metalloproteinases (MMP), enzymes involved in extracellular matrix remodeling, are implicated in meningoencephalitis pathogenesis.
- Gelatinases (MMP-2, MMP-9) degrade collagen IV, playing a key role in inflammatory brain diseases and disease spread.
- Infections can elevate MMP levels by increasing secretion or decreasing inhibitor function, highlighting their importance in disease progression.
Impact:
- Identifying MMPs' role may lead to novel diagnostic and prognostic markers for meningoencephalitis.
- Targeting MMP activity could offer new therapeutic strategies to mitigate the severe outcomes of meningoencephalitis.
Related Concept Videos
Encephalitis l: Introduction
Viral Meningitis
Encephalitis ll: Pathophysiology
Bacterial Meningitis II: Pathophysiology
Bacterial Meningitis
Cryptococcal Meningitis

