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Proteasome and C-reactive protein inflammatory response in children undergoing shorter and longer lasting
Marzena Tylicka1, Ewa Matuszczak2, Maria Karpińska1
1a Department of Biophysics , Medical University of Białystok , Białystok , Poland.
Insights
Surgical procedures trigger inflammatory responses. This study found that while both C-reactive protein (CRP) and 20S proteasome activity increase after pediatric laparoscopic cholecystectomy, only proteasome activity correlates with surgery duration, suggesting a role in healing.
Area of Science:
- Pediatric Surgery
- Inflammatory Response
- Biochemistry
Background:
- Surgical procedures release inflammatory mediators like cytokines.
- These mediators can lead to acute-phase reactions and proteasome system activation.
- Understanding these responses is crucial for patient recovery.
Purpose of the Study:
- To characterize the inflammatory response in children after laparoscopic cholecystectomy.
- To analyze changes in C-reactive protein (CRP) and 20S proteasome activity.
- To correlate these inflammatory markers with surgical procedure duration.
Main Methods:
- Plasma CRP concentration was measured using standard biochemical assays.
- Circulating 20S proteasome activity was assessed using a specific peptide substrate assay.
- Statistical analysis was performed to evaluate changes and correlations.
Main Results:
- A statistically significant increase in plasma proteasome activity and CRP concentration was observed post-surgery (p < .05).
- 20S proteasome activity showed a positive correlation with the duration of the laparoscopic cholecystectomy.
- Children with longer surgeries exhibited higher proteasome activity.
Conclusions:
- Both CRP and 20S proteasome activity increase after pediatric laparoscopic cholecystectomy.
- Only 20S proteasome activity correlates with surgical duration, unlike CRP.
- This suggests proteasomes may play a more complex role in healing and protein repair post-surgery.
Abstract:
Operations of varying duration cause the release of a number of inflammatory mediators, in particular cytokines which lead to proteasome and acute-phase reactions. The purpose of this novel human study, was to characterize inflammatory response in children undergoing laparoscopic cholecystectomy, by analyzing changes in selected inflammatory mediators: C-reactive protein concentration and circulating 20S proteasome activity following surgical injury and to correlate them with the duration of the surgical procedure. Plasma C-reactive protein concentration (CRP) was determined by standard biochemical laboratory procedures. Proteasome activity in the plasma of children was assessed using Suc-Leu-Leu-Val-Tyr-AMC peptide substrate. Statistically significant increase in the plasma proteasome activity and C-reactive protein concentration, was noted (p < .05) in children after laparoscopic cholecystectomy. We found the correlation between the 20S proteasome activity and the length of the procedure. In children undergoing longer lasting laparoscopic cholecystectomy the proteasome activity was much higher than in patients having shorter surgical procedure. The CRP concentration and 20S proteasome activity significantly increase after surgery, but only 20S proteasome activity correlate with the length of the surgery. This may confirm that CRP is only an indicator of pathological state, while the function of the proteasomes is more complex because of their participation in the processes of repair and wound healing, and in the removal of damaged proteins.