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Ascorbic acid combined with ibuprofen in hypoxic ischemic encephalopathy: a randomized controlled trial
H Aly1, L Abd-Rabboh, M El-Dib
1Department of Neonatology, George Washington University and Children's National Medical Center, Washington, District of Columbia, USA. haly@mfa.gwu.edu
Insights
This study found that combining ascorbic acid and ibuprofen did not improve outcomes for newborns with hypoxic ischemic encephalopathy (HIE). Further research is needed to understand why this treatment for HIE was ineffective.
Area of Science:
- Neonatal neurology
- Perinatal medicine
- Biochemistry
Background:
- Hypoxic ischemic encephalopathy (HIE) in neonates is linked to free oxygen radicals and inflammatory cytokines.
- Effective treatments are crucial to mitigate brain injury and improve neurodevelopmental outcomes in affected infants.
Purpose of the Study:
- To investigate if a combination of antioxidants (ascorbic acid) and anti-inflammatory agents (ibuprofen) could reduce brain injury in HIE.
- To determine if this combined therapy improves neurodevelopmental outcomes in term infants treated immediately after birth.
Main Methods:
- A prospective, randomized, double-blinded controlled trial involving 60 asphyxiated term infants.
- Infants received either intravenous ascorbic acid and oral ibuprofen or a placebo for 3 days.
- Cytokine levels were measured, and neurological/developmental assessments were conducted at 6 months.
Main Results:
- No significant differences were observed between the intervention and control groups in HIE severity, mortality, neurological abnormalities, or developmental delay.
- Serum IL-1 beta and IL-6 concentrations correlated with HIE severity, and IL-6 correlated with 6-month neurodevelopmental outcomes.
- No complications were attributed to the ascorbic acid and ibuprofen intervention.
Conclusions:
- Early administration of ascorbic acid and ibuprofen did not alter outcomes for infants experiencing perinatal asphyxia.
- The ineffectiveness may be due to inadequate dosing, route of administration, or the involvement of other potent mediators in HIE brain injury.
Objective:
Free oxygen radicals and proinflammatory cytokines are important causes for brain injury in neonates with hypoxic ischemic encephalopathy (HIE). Our objectives were to test the hypothesis that a combination of antioxidants (ascorbic acid) and anti-inflammatory agents (ibuprofen) can ameliorate the brain injury in HIE and improve neurodevelopmental outcomes when given to term infants immediately after birth.
Study Design:
In a prospective, randomized, double-blinded controlled trial, 60 asphyxiated term infants were assigned to one of two groups, intervention and control. The intervention group (n=30) received intravenous ascorbic acid and oral ibuprofen for 3 days; and the control group (n=30) received similar volumes of a placebo. We measured a panel of cytokines at enrollment and administered the treatment drugs within 2 h after birth. Neurological evaluations and developmental screenings were performed for all survivors at 6 months of age.
Result:
The Intervention and Control groups did not differ in the severity of HIE at enrollment, the concentrations of IL-1 beta and IL-6, the incidence of mortality (37 vs 33%), the incidence of neurological abnormalities at hospital discharge (47 vs 55%) and the incidence of developmental delay at 6 months of age (32 vs 40%), respectively. None of the observed complications were related to intervention. Serum interleukin (IL)-1 beta and IL-6 concentrations correlated positively with the severity of HIE at birth (P<0.01), whereas only serum IL-6 correlated with neurodevelopmental outcome at 6 months (P<0.001).
Conclusion:
Early administration of ascorbic acid and ibuprofen did not affect outcomes in infants with perinatal asphyxia. This study does not explain whether our intervention was not effective in blocking free radicals and inflammatory cytokines, if the dosing and route of administration were inadequate, or if other mediators existed that could have a more powerful role in brain injury during hypoxia-ischemia.
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