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Prostanoids in bronchoalveolar lavage fluid do not predict outcome in congenital diaphragmatic hernia patients
H Ijsselstijn1, F J Zijlstra, J C De Jongste
1Department of Paediatric Surgery Erasmus University Rotterdam and University Hospital/Sophia Children's Hospital Rotterdam The Netherlands.
Insights
Prostanoid levels in bronchoalveolar lavage fluid do not predict outcomes in infants with congenital diaphragmatic hernia (CDH) and persistent pulmonary hypertension (PPH). Further research is needed to understand PPH in CDH patients.
Area of Science:
- Neonatal Medicine
- Pulmonary Hypertension Research
- Pediatric Surgery
Background:
- Vasoactive prostanoids are implicated in persistent pulmonary hypertension (PPH) in infants with congenital diaphragmatic hernia (CDH).
- Understanding biomarkers for PPH in CDH is crucial for predicting clinical outcomes.
Purpose of the Study:
- To investigate the relationship between prostanoid levels in bronchoalveolar lavage (BAL) fluid and clinical outcomes in infants with CDH and PPH.
- To determine if specific prostanoid concentrations can predict prognosis in CDH patients.
Main Methods:
- Measured concentrations of 6-keto-prostaglandin F(1alpha) and thromboxane B(2) in BAL fluid from 18 CDH patients and 13 controls.
- Analyzed levels of protein, albumin, total cell count, and elastase-alpha1-proteinase-inhibitor complex.
- Correlated prostanoid levels with clinical outcomes and prognosis in CDH infants.
Main Results:
- CDH patients with PPH showed varied prostanoid concentrations in BAL fluid.
- Infants with poor prognosis had high levels of 6-keto-prostaglandin F(1alpha) and thromboxane B(2), or high 6-keto-prostaglandin F(1alpha) only.
- Thromboxane B(2) levels exhibited significant variability across all CDH patients, regardless of outcome.
Conclusions:
- Prostanoid levels in BAL fluid do not reliably predict clinical outcomes in CDH patients with PPH.
- The role and predictive value of specific prostanoids in CDH-associated PPH require further investigation.
Abstract:
Vasoactive prostanoids may be involved in persistent pulmonary hypertension (PPH) in infants with a congenital diaphragmatic hernia (CDH). We hypothesized that increased levels of prostanoids in bronchoalveolar lavage (BAL) fluid would predict clinical outcome. We measured the concentrations of 6-keto-prostaglandin F(1alpha) (6-keto-PGF(1alpha)), thromboxane B(2) (TxB(2)), protein, albumin, total cell count, and elastase-alpha1-proteinase-inhibitor complex in BAL fluid of 18 CDH patients and of 13 control subjects without PPH. We found different concentrations of prostanoids in BAL fluid of CDH patients with PPH: infants with a poor prognosis had either high levels of both 6-keto-PGF(1alpha) and TxB(2) compared to controls, or high levels of 6-keto-PGF(1alpha) only. TxB(2) levels showed a large variability in all CDH patients irrespective of outcome. We conclude that prostanoid levels in BAL fluid do not predict clinical outcome in CDH patients.
