Journal
PEDIATRICS INTERNATIONAL
Volume 62, Issue 7, Pages 770-778Publisher
WILEY
DOI: 10.1111/ped.14215
Keywords
hypoxia-ischemia; inflammation; neuroprotection; therapeutic hypothermia; toll-like receptors
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Funding
- Health Research Council of New Zealand [17/601]
- Barbara Basham Doctoral Scholarship -Auckland Medical Research Foundation [1216004]
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Therapeutic hypothermia is now well established to partially reduce disability in term and near-term infants with moderate-severe hypoxic-ischemic encephalopathy. Preclinical and clinical studies have confirmed that current protocols for therapeutic hypothermia are near optimal. The challenge is now to identify complementary therapies that can further improve outcomes, in combination with therapeutic hypothermia. Overall, anti-excitatory and anti-apoptotic agents have shown variable or even no benefit in combination with hypothermia, suggesting overlapping mechanisms of neuroprotection. Inflammation appears to play a critical role in the pathogenesis of injury in the neonatal brain, and thus, there is potential for drugs with immunomodulatory properties that target inflammation to be used as a therapy in neonates. In this review, we examine the evidence for neuroprotection with immunomodulation after hypoxia-ischemia. For example, stem cell therapy can reduce inflammation, increase cell survival, and promote cell maturation and repair. There are also encouraging preclinical data from small animals suggesting that stem cell therapy can augment hypothermic neuroprotection. However, there is conflicting evidence, and rigorous testing in translational animal models is now needed.
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