Biomaterial Immune Response
Biomaterial Immune Response - Related Videos
01:36
Humoral Immune Responses
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2019
Overview The humoral immune response, also known as the antibody-mediated immune response, targets pathogens circulating in “humors,” or extracellular fluids, such as blood and lymph. Antibodies target invading pathogens for destruction via multiple defense mechanisms, including neutralization, opsonization, and activation of the complement system. Patients that are impaired in the production of antibodies suffer from severe and frequent infections by common pathogens and unusual pathogens. B...
07:44
Overview of Biomaterials
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2023
Biomaterials are materials engineered to interact favorably with biological organisms or molecules. These materials can be derived from or produced by an organism, or can even be a synthesized polymer. Engineers use these novel materials in a wide range of applications, such as tissue engineering, biosensing and drug delivery. This video introduces common biologically derived materials, and provides examples of common techniques used to process them. Key challenges in the field are discussed,...
07:58
Electrospinning of Silk Biomaterials
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2023
Silk fibers have been processed and used to create fabrics and threads for centuries. However, the solubilizing of silk fibers, thereby turning it into a versatile pre-polymer solution is a much newer technology. Solubilized silk can be processed in many different ways to create a biocompatible material with controllable mechanical properties. This video introduces the processing of silk from silk worm cocoons, and shows how the silk solution can be used to create a fiber mat via...
09:46
Accessing the Cytotoxicity and Cell Response to Biomaterials
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Cited by 15 •
2021
This methodology aims to evaluate biomaterial cytotoxicity through the preparation of soluble extracts, using viability assays and phenotypic analysis, including flow cytometry, RT-PCR, immunocytochemistry, and other cellular and molecular biology techniques.
11:28
A Coupled Experiment-finite Element Modeling Methodology for Assessing High Strain Rate Mechanical Response of Soft Biomaterials
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Cited by 8 •
2015
The current study prescribes a coupled experiment-finite element simulation methodology to obtain the uniaxial dynamic mechanical response of soft biomaterials (brain, liver, tendon, fat, etc.). The multiaxial experimental results that arose because of specimen bulging obtained from Split-Hopkinson Pressure Bar testing were rendered to a uniaxial true stress-strain behavior when simulated through iterative optimization of the finite element analysis of the biomaterial.
FAQs
The material surface becomes biologically active almost immediately because proteins adsorb onto it after implantation. These adsorbed proteins help recruit innate immune cells, including neutrophils and macrophages. Their interactions with the surface shape subsequent signaling, so surface characterization is essential for explaining why two materials can produce different host responses.
Persistent signaling can shift a short-lived inflammatory reaction toward a chronic foreign-body response. Macrophages may participate in the formation of foreign body giant cells, while ongoing inflammation can be associated with fibrous encapsulation around the device. This distinction matters because an encapsulating layer may interfere with tissue integration or long-term device performance.
Surface chemistry, material structure, and degradation are central design variables. Adjusting them can alter how the implanted material interacts with adsorbed proteins and recruited immune cells. The objective is not simply to eliminate immune activity, but to reduce adverse inflammation while preserving tissue integration and the intended function of the construct.
Evaluation focuses on the response sequence and its consequences: protein adsorption, recruitment of neutrophils and macrophages, persistent signaling, giant-cell formation, and fibrous encapsulation. Relating these events to a material’s surface chemistry, structure, and degradation helps bioengineers identify design features associated with adverse reactions or poor integration. The analysis then informs refinement of medical materials.
This framework applies across several bioengineering platforms, including implants, tissue-engineering scaffolds, biosensors, and drug-delivery systems. In each case, immune signaling can affect safety, tissue integration, or sustained therapeutic performance. Considering the response during design helps researchers select and refine materials that support the intended medical function rather than evaluating device performance separately from host interactions.
Control is important because the desired outcome combines reduced adverse immune reactions with continued tissue integration and long-term therapeutic function. Surface chemistry, structure, and degradation provide distinct design levers for pursuing that balance. This systems-level view is useful when optimizing an implant, scaffold, biosensor, or drug-delivery system for its intended use.