Journal Article

Dynamics of cerebrospinal fluid levels of matrix metalloproteinases in human traumatic brain injury

Al Nimer, Faiez, Andreasson, Ulf, Minta, Karolina, Tullberg, Mats, Zetterberg, Henrik, Blennow, Kaj, Portelius, Erik, Jeppsson, Anna, Brinkmalm, Gunnar, Piehl, Fredrik, Thelin, Eric P.

2020

Overview

Matrix metalloproteinases (MMPs) are extracellular enzymes involved in the degradation of extracellular matrix (ECM) proteins. Increased expression of MMPs have been described in traumatic brain injury (TBI) and may contribute to additional tissue injury and blood–brain barrier damage. The objectives of this study were to determine longitudinal changes in cerebrospinal fluid (CSF) concentrations of MMPs after acute TBI and in relation to clinical outcomes, with patients with idiopathic normal pressure hydrocephalus (iNPH) serving as a contrast group. The study included 33 TBI patients with ventricular CSF serially sampled, and 38 iNPH patients in the contrast group. Magnetic bead-based immunoassays were utilized to measure the concentrations of eight MMPs in ventricular human CSF. CSF concentrations of MMP-1, MMP-3 and MMP-10 were increased in TBI patients (at baseline) compared with the iNPH group (p < 0.001), while MMP-2, MMP-9 and MMP-12 did not differ between the groups. MMP-1, MMP-3 and MMP-10 concentrations decreased with time after trauma (p = 0.001–0.04). Increased concentrations of MMP-2 and MMP-10 in CSF at baseline were associated with an unfavourable TBI outcome (p = 0.002–0.02). Observed variable pattern of changes in MMP concentrations indicates that specific MMPs serve different roles in the pathophysiology following TBI, and are in turn associated with clinical outcomes.

• Publisher: Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
• Subject: 631/378 / 692/308 / 692/53 / 692/617 / Adult / Aged / Biomarkers - cerebrospinal fluid / Blood-brain barrier / Brain Injuries, Traumatic - cerebrospinal fluid / Brain Injuries, Traumatic - diagnosis / Case-Control Studies / Cerebrospinal fluid / Clinical outcomes / Extracellular enzymes / Extracellular matrix / Female / Follow-Up Studies / Gelatinase A / Gelatinase B / Humanities and Social Sciences / Humans / Hydrocephalus / Immunoassays / Interstitial collagenase / Male / Matrix metalloproteinase / Matrix Metalloproteinases - cerebrospinal fluid / Middle Aged / multidisciplinary / Neurosciences / Neurovetenskaper / Prognosis / Prospective Studies / Science / Science (multidisciplinary) / Stromelysin 1 / Stromelysin 2 / Traumatic brain injury / Ventricle