Publications

Latest publication 11/01/2012

Postnatal administration of IL-1Ra exerts neuroprotective effects following peri

New therapeutic strategies are needed to protect neonates, especially premature newborns, against brain injury and associated neurobehavioral...

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    [title] => Postnatal administration of IL-1Ra exerts neuroprotective effects following peri
    [paragraph] => Postnatal administration of IL-1Ra exerts neuroprotective effects following perinatal inflammation and/or hypoxic-ischemic injuries
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Authors
Sylvie Girard, Hugues Sébire, Marie-Elsa Brochu, Sinziana Briota, Philippe Sarret, Guillaume Sébire

 Lab
Sherbrooke University, Quebec, Canada
Journal
Brain, Behavior, and Immunity
Abstract
New therapeutic strategies are needed to protect neonates, especially premature newborns, against brain injury and associated neurobehavioral deficits. The role of pro-inflammatory cytokines, especially IL-1?, in the pathophysiological pathway leading to neonatal brain damage is increasingly recognized and represents an attractive therapeutic target. We investigated the therapeutic potential of postnatal systemic administration of the interleukin (IL)-1 receptor antagonist (IL-1Ra) in an animal model of perinatal brain injury using the insults most common to human neonates, i.e. prenatal exposure to inflammation and/or postnatal hypoxia-ischaemia (HI). We found that postnatal administration of IL-1Ra preserved motor function and exploratory behavior after either prenatal exposure to inflammatory agent lipopolysaccharide (LPS) or postnatal HI insult. The deleterious effect of combined prenatal LPS and postnatal HI on brain development was also alleviated by administration of IL-1Ra, as seen by the protected neural stem cell population, prevention of myelin loss in the internal capsule, decreased gliosis, and decreased neurobehavioral impairment. This study showed the distinct pattern of functional deficits induced by prenatal inflammation as compared to postnatal HI and the therapeutic potential of IL-1Ra administration against neonatal brain injury. Furthermore, our results highlight the potential for postnatal treatment of prenatal inflammatory stressors.

Highlight:
Using a rat model of perinatal brain injury, we showed that postnatal IL-1Ra, anti-inflammatory treatment, was protective against behavioral deficits and brain injury.

Keywords: Inflammation; IL-1; Behavior; Development; Brain damage
BIOSEB Instruments Used
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An easy way to objectively quantify the muscular strength of mice and rats, and to assess the effect of drugs, toxins, muscular (i.e. myopathy) and neurodegenerative diseases on muscular degeneration. It is widely used in conjunction with the ROTAROD motor coordination test: a normally coordinated rodent will show a decreased latency to fall off the rotating rod if its muscular strength is low. The Grip Strength Test is a must for your research on activity, motor control & coordination, and is particularly well suited for studies on Parkinson's & Huntington's disease.
New features GS4 - 2023: Color display with permanent backlight screen for easier reading, reset by footswitch, Improved battery time, Larger data memory of 500 values, Animal counter, USB port (charging/data transfer)

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