Related Experiment Video
Updated: Jun 19, 2025
Biological Compatibility Profile on Biomaterials for Bone Regeneration
Published on: November 16, 2018
Assessment of Pyrogenic Response of Medical Devices and Biomaterials by the Monocyte Activation Test (MAT): A
Izabela Gimenes1, Janaína Spoladore1, Bruno Andrade Paranhos2
1Post-Graduation Program in Science and Biotechnology, Fluminense Federal University, Niteroi 24220-900, Brazil.
Abstract:
Pyrogens are fever-inducing substances routinely investigated in health products through tests such as the Rabbit Pyrogen Test (RPT), the Limulus Amebocyte Lysate (LAL), and the Monocyte Activation Test (MAT). However, the applications of the MAT for medical devices and biomaterials remain limited. This work aimed to overview the studies evaluating the pyrogenicity of medical devices and biomaterials using the MAT, highlighting its successes and potential challenges. An electronic search was performed by December 2023 in PubMed, Scopus, and Web of Science, identifying 321 records which resulted in ten selected studies. Data were extracted detailing the tested materials, MAT variants, interferences, and comparisons between methods. Methodological quality was assessed using the ToxRTool, and the results were synthesized descriptively. The selected studies investigated various materials, including polymers, metals, and natural compounds, employing the different biological matrices of the MAT. Results showed the MAT's versatility, with successful detection of pyrogens in most materials tested, though variability in sensitivity was noted based on the material and testing conditions. Challenges remain in optimizing protocols for different material properties, such as determining the best methods for direct contact versus eluate testing and addressing the incubation conditions. In conclusion, the MAT demonstrates significant potential as a pyrogen detection method for medical devices and biomaterials. However, continued research is essential to address existing gaps, optimize protocols, and validate the test across a broader range of materials.
Insights
The Monocyte Activation Test (MAT) shows promise for detecting fever-inducing pyrogens in medical devices and biomaterials. Further research is needed to optimize protocols and validate its use across diverse materials.
Area of Science:
- Biomaterials Science
- Immunotoxicology
- Medical Device Testing
Background:
- Pyrogens, fever-inducing substances, are critical safety concerns for health products.
- Established pyrogen tests like Rabbit Pyrogen Test (RPT) and Limulus Amebocyte Lysate (LAL) have limitations.
- The Monocyte Activation Test (MAT) offers an alternative but its application for medical devices and biomaterials is not fully explored.
Purpose of the Study:
- To review existing studies on the pyrogenicity of medical devices and biomaterials using the MAT.
- To highlight the successes and challenges of employing MAT in this field.
- To identify areas for future research and protocol optimization.
Main Methods:
- Systematic electronic literature search conducted in PubMed, Scopus, and Web of Science up to December 2023.
- Inclusion of 10 studies from 321 identified records based on predefined criteria.
- Data extraction on materials tested, MAT variants, interferences, and comparative analyses; methodological quality assessed using ToxRTool.
Main Results:
- The MAT demonstrated versatility in detecting pyrogens across various materials, including polymers, metals, and natural compounds.
- Successful pyrogen detection was reported in most tested materials, indicating MAT's efficacy.
- Variability in sensitivity was observed, influenced by material type and specific testing conditions, alongside challenges in protocol optimization.
Conclusions:
- The Monocyte Activation Test presents significant potential for pyrogen detection in medical devices and biomaterials.
- Addressing challenges in protocol optimization for diverse material properties is crucial for broader adoption.
- Continued research and validation are essential to fully establish MAT as a reliable method in this domain.
