Cerium Oxide Nanoparticles Synthesis for Stroke Therapy

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Solution Overview

Problem

Existing methods for producing cerium oxide nanoparticles for treating free radical-related diseases, such as stroke and cardiovascular disease, face challenges including variability in particle size, surfactant toxicity, and agglomeration issues, which affect their efficacy and biological deliverability.

Innovation Solution

Cerium oxide nanoparticles are formulated using specific synthesis methods that ensure consistent size and low agglomeration, reducing toxicity and improving biological activity, allowing them to act as potent free radical scavengers and mitochondrial protectants.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If sol-gel process is used to produce cerium oxide nanoparticles, then free radical scavenging activity is achieved, but particle size control is poor and batch variability is high

Engineering Contradiction:

Improvefree radical scavenging activityVSAvoidparticle size control

Core Design Contradiction:

ReliabilityVSManufacturing precision

Solution Approach 1:

The patent changes the synthesis parameters by using a co-precipitation method instead of sol-gel, controlling pH, temperature, and reactant ratios to achieve consistent particle sizes of 5-50 nm with narrow distribution across batches, while maintaining free radical scavenging activity

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent implements quality control feedback by measuring particle size distribution for each batch and adjusting synthesis parameters accordingly to maintain consistent nanoparticle characteristics and eliminate batch-to-batch variability

Inventive Principle:

Principle #23Feedback

2Reliability

If sol-gel process is used to produce cerium oxide nanoparticles, then free radical scavenging activity is achieved, but surfactant tailing occurs causing toxicity and agglomeration

Engineering Contradiction:

Improvefree radical scavenging activityVSAvoidsurfactant toxicity

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent extracts and eliminates the harmful surfactant component by using a co-precipitation method that produces surfactant-free cerium oxide nanoparticles, removing the source of toxicity and agglomeration while preserving the therapeutic free radical scavenging activity

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent converts the harmful surfactant residue issue into a benefit by developing a synthesis method that inherently produces pure, surfactant-free nanoparticles, transforming a manufacturing缺陷 into a quality advantage with enhanced biocompatibility

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

3Ease of operation

If cerium oxide nanoparticles are placed in biological media, then biological activity is observed, but valence state changes occur altering free radical scavenging and cellular delivery

Engineering Contradiction:

Improvebiological activityVSAvoidvalence state stability

Core Design Contradiction:

Ease of operationVSStability of the object's composition

Solution Approach 1:

The patent applies beforehand cushioning by pre-stabilizing the cerium oxide nanoparticle surface with protective coatings or surface modifications before introducing them to biological media, preventing unwanted valence state changes and maintaining consistent free radical scavenging activity and cellular delivery throughout the biological process

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

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 cerium oxide nanoparticles demonstrate enhanced neuronal and cardiovascular recovery by reducing free radical damage, improving mitochondrial function, and extending cell lifespan, with significant therapeutic and prophylactic effects in both in vitro and in vivo models.

Implementation Method 1

the cerium oxide nanoparticles were proposed to act as free radical scavengers to bring about the observed results

Methodology Applied

Scientific EffectFree radical scavenging: Oxidation

Implementation Method 2

Damage from ischemic stroke results from generation of free radicals in neurons and other brain cells, which cause in cellular demise and loss of function. Loss of energy production due to damaged mitochondria is also evident.

Methodology Applied

Scientific EffectMitochondrial protection:

Data Source

PatentUS9649337B2Cerium oxide nanoparticles for the treatment and prevention of stroke and cardiovascular disease

Publication Date: 2017.05.16 EDWARD VIA VIRGINIA COLLEGE OF OSTEOPATHIC MEDICINE

AI summary

A method of treating or preventing neurological injury in a subject who has suffered a stroke is described. The method includes administering a therapeutically effective amount of cerium oxide nanoparticles to the subject. Methods for prophylaxis against neurological injury from stroke, and methods for treating or preventing cardiovascular disease by administration of a therapeutically effective amount of cerium oxide nanoparticles are also described.