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Vitamin D-Binding Protein (Gc-Globulin) in Acute Liver Failure in Children
Alina Grama1,2,3, Lucia Burac1,2, Cornel Olimpiu Aldea4
12nd Paediatric Clinic, University of Medicine and Pharmacy "Iuliu Hatieganu", 400177 Cluj-Napoca, Romania.
Insights
Vitamin D-binding protein (Gc-globulin) serum levels are significantly lower in children with acute liver failure (ALF). Lower Gc-globulin levels indicate poor disease outcomes and correlate with ALF severity markers.
Area of Science:
- Pediatric Hepatology
- Clinical Biochemistry
- Biomarker Discovery
Background:
- Acute liver failure (ALF) in children is a critical condition with high mortality.
- Identifying reliable biomarkers for ALF severity and prognosis is crucial for timely intervention.
- Vitamin D-binding protein (Gc-globulin) is involved in various biological processes, but its role in pediatric ALF is not well-established.
Purpose of the Study:
- To analyze serum vitamin D-binding protein (Gc-globulin) levels in children with ALF.
- To evaluate the correlation of Gc-globulin levels with ALF disease outcomes.
- To assess the relationship between Gc-globulin levels and other established ALF severity markers.
Main Methods:
- A cohort study involving 34 children diagnosed with ALF and 30 healthy controls.
- Serum Gc-globulin levels were measured using standard laboratory techniques.
- Statistical analysis was performed to compare Gc-globulin levels between groups and correlate them with clinical outcomes and severity scores.
Main Results:
- Serum Gc-globulin levels were significantly lower in children with ALF compared to controls (151.57 vs. 498.63 mg/L, p < 0.000001).
- Lower Gc-globulin levels were observed in ALF patients with poor outcomes (59.34 mg/L) compared to survivors (216.12 mg/L, p < 0.0001).
- Gc-globulin levels showed significant correlations with established ALF severity markers and varied based on ALF etiology.
Conclusions:
- Serum Gc-globulin is a potential biomarker for identifying children with ALF.
- Decreased Gc-globulin levels are associated with poor prognosis in pediatric ALF.
- Gc-globulin measurement may aid in risk stratification and management of children with acute liver failure.
Abstract:
This study aimed to analyse vitamin d-binding protein (Gc-globulin) serum levels in acute liver failure (ALF) in children in relation to disease outcomes and correlations with other known markers used to evaluate the severity of ALF. Our study included 34 children (mean age 4.87 ± 5.30 years) with ALF of different causes (metabolic, 26.47%; autoimmune, 23.53%; toxic, 20.59%; infection, 17.65%; unknown, 11.76%) and 30 children without any liver injury (mean age 6.11 ± 4.26 years). The outcome was poor in 14 patients (41.18%), including one child with liver transplantation (2.94%). Serum Gc-globulin levels were significantly lower in ALF patients compared to the control group (151.57 ± 171.8 mg/L vs. 498.63 ± 252.50 mg/L; p < 0.000001), with an optimum cut-off of 163.5 mg/L (Area Under the Curve, AUC, 0.8921; sensitivity, 76.50%; specificity, 100%). Levels were also lower in patients with poor outcomes compared to survivors (59.34 ± 33.73 mg/L vs. 216.12 ± 199.69 mg/L; p < 0.0001), with an optimum cut-off 115 mg/L (AUC, 0.7642; sensitivity, 100%; specificity, 50%). Gc-globulin serum levels were variable according to ALF aetiology, i.e., lower in metabolic, infectious, or unknown causes compared to autoimmune and toxic causes. Gc-globulin serum levels were decreased in children with ALF and lower in those with poor outcomes compared with survivors. Gc-globulin serum levels were correlated with other known parameters used to evaluate the severity of ALF and could help to identify patients at high risk for poor outcomes.
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