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Published on: June 24, 2018
Analysis of Molecular Changes Induced By Mineral Trioxide Aggregate On sPLA2
Murilo B Lopes1, Veronica C G Soares2, Fabio H R Fagundes3
1Department of Restorative Dentistry, UNOPAR - Universidade Norte do Paraná, Londrina, PR, Brazil.
Abstract:
The aim of this study was to analyze the effects of MTA on the structure and enzymatic activity of sPLA2 in order to provide subsidies for improvement in the formulation of the product. MTA powder was incubated for 60 min in the presence of sPLA2 and was analyzed by chromatography, electrospray mass (ESI-MS) and small-angle X-ray scattering (SAXS). It was find that the elution profile, retention time, and fragmentation of sPLA2 were altered after treatment with MTA. Calcium was the MTA component that most amplified the inflammatory signal. Significant interactions were found between MTA and sPLA2, which could aid in our understanding of the mechanisms of action of MTA during the inflammatory process and it may facilitate the structural modification of MTA, thereby improving its biological safety and consequently the rate of the treatment success.
Insights
Mineral trioxide aggregate (MTA) alters the structure and enzymatic activity of secretory phospholipase A2 (sPLA2), with calcium amplifying inflammatory signals. This interaction offers insights for improving MTA
Area of Science:
- Biochemistry
- Materials Science
- Dental Materials
Background:
- Secretory phospholipase A2 (sPLA2) plays a role in inflammatory processes.
- Mineral trioxide aggregate (MTA) is a widely used dental material with known bioactivity.
- Understanding the interaction between MTA and sPLA2 is crucial for optimizing MTA's clinical performance and safety.
Purpose of the Study:
- To investigate the effects of MTA on the structural integrity and enzymatic activity of sPLA2.
- To identify specific MTA components responsible for observed interactions.
- To provide data for improving MTA formulation and enhancing treatment outcomes.
Main Methods:
- Incubation of MTA powder with sPLA2.
- Analysis using chromatography, electrospray mass spectrometry (ESI-MS), and small-angle X-ray scattering (SAXS).
- Assessment of changes in sPLA2 elution profile, retention time, and fragmentation patterns.
Main Results:
- MTA treatment significantly altered the elution profile, retention time, and fragmentation of sPLA2.
- Calcium, a component of MTA, was identified as a key factor amplifying the inflammatory signal.
- Significant molecular interactions were detected between MTA and sPLA2.
Conclusions:
- MTA interacts with sPLA2, influencing its structure and enzymatic activity.
- The findings elucidate MTA's mechanism in inflammatory processes.
- Structural modification of MTA based on these interactions may improve its biological safety and treatment efficacy.
