Abstract
Therapeutic hypothermia (TH) is now provided as standard care to infants with moderate-severe hypoxic ischemic encephalopathy (HIE). The role of TH in limiting neuronal injury is well recognized, but its effect on hepatic injury which occurs frequently in neonatal HIE is not known. Our objective was to characterize biomarkers of liver injury and function in the setting of neonatal HIE and to describe whether HIE severity and provision of TH influence these hepatic biomarkers. We performed a multicenter retrospective study and compared hepatic biomarkers obtained during the first postnatal week, according to the severity of HIE and whether treated with TH. Of a total of 361 infants with HIE, 223 (62%) received TH and 138 (38%) were managed at normal temperature. Most hepatic biomarkers and C-reactive protein (CRP) were significantly associated with the severity of HIE (p < 0.001). Infants treated with TH had lower peak alanine aminotransferase (ALT) concentrations (p = 0.025) and a delay in reaching peak CRP concentration (p < 0.001).
Conclusion: We observed a significant association between the clinical grade of HIE and biomarkers of liver metabolism and function. Therapeutic hypothermia was associated with delayed CRP responses and with lower ALT concentrations and so may have the potential to modulate hepatic injury.
What is Known: • Ischemic hepatic injury occurs frequently as a part of multiorgan dysfunction in infants with hypoxic ischemic encephalopathy (HIE). • The neuroprotective role of therapeutic hypothermia in management of infants with HIE is well recognized, but the potential hepato-protective effects of hypothermia are unclear. |
What is New/What this study adds: • Therapeutic hypothermia was associated with lower alanine aminotransferase and albumin concentrations and a delayed C-reactive protein (CRP) response and so may have the potential to modulate hepatic injury. • An elevated CRP concentration during the first postnatal week may be regarded as an expected finding in moderate and severe HIE and, in the overwhelming majority of cases, occurs secondary to hepatic hypoxia-ischemia in the absence of blood culture-positive sepsis. |
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Change history
07 August 2017
An erratum to this article has been published.
Abbreviations
- ALB:
-
Albumin
- ALT:
-
Alanine aminotransferase
- AST:
-
Aspartate aminotransferase
- CB:
-
Conjugated bilirubin
- CRP:
-
C-reactive protein
- GGT:
-
Gamma glutaryl transpeptidase
- HIE:
-
Hypoxic ischemic encephalopathy
- NE:
-
Neonatal encephalopathy
- PTT:
-
Partial thromboplastin time
- PT:
-
Prothrombin time
- TH:
-
Therapeutic hypothermia.
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Acknowledgements
The authors sincerely thank the anonymous referees for their helpful constructive comments on an earlier version of the manuscript.
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HM co-designed the study protocol, co-drafted the data collection form, and helped obtain the ethics approval; also collected the local data, co-wrote the first manuscript draft, led on manuscript re-drafting, provided intellectual input, finalized the revised manuscript version, and approved the final submitted manuscript version.
DG collected the data from her center, contributed to manuscript drafting and approved the final submitted manuscript version.
JS provided expert statistical input, performed all the main data analyses, contributed to manuscript drafting and approved of the final submitted manuscript version.
AP collected the data from her center, contributed to manuscript drafting and approved the final submitted manuscript version.
AV collected the data from her center, contributed to manuscript drafting and approved the final submitted manuscript version.
YHC collected the data from her center, contributed to manuscript drafting and approved the final submitted manuscript version.
CC collected the data from her center, contributed to manuscript drafting and approved the final submitted manuscript version.
SS helped collect the data from his center, contributed to manuscript drafting and approved the final submitted manuscript version.
VV collected the data from his center, contributed to manuscript drafting and approved the final submitted manuscript version.
AC obtained local governance approvals and helped collect the data from her center, verified data queries, provided intellectual input, contributed to manuscript drafting, and approved the final manuscript version.
SV obtained local governance approvals and helped collect the data, verified data queries, provided intellectual input, contributed to manuscript drafting, and approved the final submitted manuscript version.
MAT obtained local governance approvals, provided intellectual input, contributed to manuscript drafting, and approved the final submitted manuscript version.
PC conceived the idea for this study. He co-designed the study protocol, co-drafted the data collection form, obtained the ethics approval and also local governance approvals for his center, undertook local data collection, assisted with data analysis, verified data queries, provided intellectual input, and co-wrote the first and final submitted manuscript drafts. PC is the guarantor for this work.
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The authors declare that they have no conflict of interest.
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No specific funding was received for this study.
Ethical approval
This article does not contain any studies with human participants or animals performed by any of the authors, and informed consent was not required for the purpose of the study. This study was done with the approval of the National Research Ethics Service Committee East of England—Cambridge Central (REC reference: 11/EE/0349).
Additional information
Communicated by Patrick Van Reempts
The original version of this article was revised: in this article, the previously misaligned p value columns in Tables 2 and 3 have been corrected so that p values do now properly correspond to their correct respective rows of variables as were present in the authors’ final submitted manuscript version.
An erratum to this article is available at https://doi.org/10.1007/s00431-017-2980-2.
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Muniraman, H., Gardner, D., Skinner, J. et al. Biomarkers of hepatic injury and function in neonatal hypoxic ischemic encephalopathy and with therapeutic hypothermia. Eur J Pediatr 176, 1295–1303 (2017). https://doi.org/10.1007/s00431-017-2956-2
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DOI: https://doi.org/10.1007/s00431-017-2956-2