[Tissue plasminogen activator (t-PA) and plasminogen activator inhibitor-1 (PAI-1) in children with ulcerative
Ewa Grabarczyk1, Anna Szaflarska-Popławska, Krzysztof Góralczyk
1Uniwersytet Mikołaja Kopernika w Toruniu, Collegium Medicum w Bydgoszczy, Katedra Patofizjologii Zakład Zaburzeń Hemostazy.
Insights
Children with ulcerative colitis show elevated levels of plasminogen activator inhibitor-1 (PAI-1), suggesting its role in the inflammatory processes of this condition.
Area of Science:
- Pediatric Gastroenterology
- Hemostasis and Thrombosis
- Inflammatory Bowel Disease
Context:
- Ulcerative colitis (UC) in children presents complex pathogenesis with debated roles of hemostasis disturbances.
- Existing literature shows discrepancies in findings and interpretations regarding coagulation factors in pediatric UC.
Purpose:
- To assess the levels of tissue plasminogen activator (t-PA) and its inhibitor (PAI-1) in children diagnosed with ulcerative colitis.
- To investigate the potential involvement of t-PA and PAI-1 in the inflammatory mechanisms underlying pediatric UC.
Summary:
- This study analyzed 22 children with UC (mean age 15.55 years) and a control group of 22 children with celiac disease.
- Measurements of t-PA and PAI-1 antigen levels were performed using ELISA.
- Results indicated similar concentrations of t-PA antigen between groups, but a statistically significant higher concentration of PAI-1 antigen in children with UC.
Impact:
- The findings suggest that elevated PAI-1 concentrations in pediatric UC patients may indicate its participation in the inflammatory response and disease-induced changes in the colon mucosa.
- This research contributes to understanding the hemostatic alterations in pediatric ulcerative colitis, potentially informing future therapeutic strategies.
Unlabelled:
The analysis of bibliography referring to the role of haemostasis disturbances in pathogenesis of ulcerative colitis in children revealed considerable discrepancies in the obtained findings of the study and some controversies in their interpretation. The aim of the study was the assessment of tissue plasminogen activator (t-PA) and its inhibitor (PAI-1) in children with ulcerative colitis.
Material And Methods:
The 22 children with ulcerative colitis were included in our investigation, there were 7 girls and 15 boys whose mean age was 15, 55 (+/- 3.0) years. The reference group was made up of 22 children suffering from celiac disease covering the period of full compensation in the range of similar age and sex. Blood was drawn from the cubital vein in the morning with minimal stasis into a tube containing 3.2% sodium citrate at the ratio of 1:10. The levels of t-PA and PAI-1 were measured with ELISA.
Results:
In children with ulcerative colitis and in the control group we found out similar concentration of antigen tissue plasminogen activator (t-PA:Ag). In the group of children with ulcerative colitis under investigation a mean concentration of antigen inhibitor plasminogen activator (PAI-1:Ag) was statistically higher.
Conclusions:
Elevation of PAI-1:Ag concentration in plasma of the children suffering from ulcerative colitis may confirm the participation of PAI-1 in inflammatory reaction of disease- induced changes in colon mucosa.
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