Porous Enteron Sorbent Polymers to Mitigate Radiation GI Injury
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Solution Overview
Problem
Current medical therapies are inadequate for preventing or treating radiation-induced conditions such as oral mucositis, esophagitis, enteritis, colitis, and gastrointestinal acute radiation syndrome (GI-ARS), which cause high morbidity and mortality due to intestinal damage and bacterial translocation.
Innovation Solution
Administration of gastrointestinally administered enteron sorbent polymers with specific pore structures and compositions to sequester cytokines and bacterial toxins, reducing intestinal inflammation and permeability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If gastrointestinally administered enteron sorbent polymers are used to sequester cytokines and bacterial toxins, then intestinal inflammation and permeability are reduced, but the complexity of the treatment increases
Solution Approach 1:
The patent employs enteron sorbent polymers with specifically engineered pore structures (pore volumes between 0.4-3.0 cc/g and pore diameters 10-250,000 Å) to sequester cytokines and bacterial toxins in the gastrointestinal tract. The porous structure allows selective adsorption of harmful substances while maintaining polymer stability and biocompatibility, directly resolving the contradiction by providing a physically-based solution that targets inflammation without requiring complex pharmacological interventions
Solution Approach 2:
The patent utilizes composite polymeric materials with specific compositional ratios (e.g., styrene-divinylbenzene copolymers with 70-90 wt% styrene and 10-30 wt% divinylbenzene) to achieve optimal balance between sorption capacity, structural integrity, and gastrointestinal compatibility. This composite approach enables the polymer to simultaneously perform multiple functions: sequestering toxins, maintaining structural stability in GI conditions, and providing controlled porosity, thereby reducing overall treatment complexity while improving reliability
2Object-affected harmful factors
If high energy radiation exposure is received, then cell death and tissue damage occur, but no approved medical therapy or countermeasure exists to prevent or treat radiation toxicity
Solution Approach 1:
The patent applies preliminary anti-action by administering enteron sorbent polymers both prophylactically (before radiation exposure) and as mitigators (after radiation exposure). The polymers are prepared and positioned in the gastrointestinal tract in advance, creating a protective barrier that can immediately sequester radiation-induced toxins and cytokines when exposure occurs, without requiring complex activation or transformation processes
Solution Approach 2:
The enteron sorbent polymers serve as intermediary substances between the harmful radiation effects and the body's biological systems. The polymers physically adsorb cytokines, bacterial toxins, and other harmful mediators, preventing their direct interaction with intestinal tissue and systemic circulation. This intermediary approach provides a bridge that mitigates radiation toxicity through simple gastrointestinal administration rather than requiring complex systemic therapies
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The enteron sorbent polymers mitigate GI-ARS by reducing symptoms like diarrhea and systemic inflammation, potentially increasing survival and minimizing adverse radiation effects.
Implementation Method 1
administration of a therapeutically effective dose of a sorbent that sorbs an inflammatory mediator in said patient
Implementation Method 2
said enteron sorbent polymer is characterized as having a pore structure having a total volume of pore sizes in the range of from 10 Å to 250,000 Å greater than 0.3 cc/g to 3.0 cc/g dry polymer
Data Source
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AI summary
Disclosed herein are compositions and methods for preventing or treating acute or chronic oral mucositis, esophagitis, enteritis, colitis, or gastrointestinal acute radiation syndrome (GI-ARS) caused by radiation exposure, using one or more enteron sorbent polymers administered gastrointestinally (e.g. orally, via feeding or gastric tube, via ostomy, or rectally).