Study
User-Centred DesignRecentStrong effect

Bioadhesive polymer complexes enhance drug retention in the stomach

Developing bioadhesive interpolyelectrolyte complexes (IPECs) from Eudragit® EPO/L100 can improve gastroretentive drug delivery by prolonging drug presence in the stomach.

Preprints.org · 2023

01

Key Findings

  • 01IPECs maintained their shape during 6 hours of swelling in simulated gastric fluid.
  • 02IPECs exhibited bioadhesive properties comparable to Carbopol.
  • 03Drug release rate increased with the degree of swelling.
  • 04The release of metronidazole and acyclovir was controlled by the relaxation of polymeric chains, following the Peppas-Sahlin model.
02

Application

Design takeaway

Design drug delivery systems using bioadhesive polymers that swell in gastric conditions to increase retention time and control drug release.

How to apply

When designing oral drug delivery systems intended for prolonged action in the stomach, consider using interpolyelectrolyte complexes or similar bioadhesive polymers that swell in acidic environments.

Project actions

  • 01Consider using bioadhesive materials for projects requiring sustained release or localized action.
  • 02Investigate how material swelling affects performance in different environmental conditions.
03

Method & Evidence

AimTo investigate the potential of Eudragit® EPO/L100 interpolyelectrolyte complexes as bioadhesive carriers for gastroretentive drug delivery systems.
MethodExperimental analysis and material characterization
ProcedureInterpolyelectrolyte complexes (IPECs) were formed from Eudragit® EPO and Eudragit® L100 at different pH levels. These IPECs were then subjected to swelling tests in simulated gastric fluid (0.1 M HCl). Their structural changes during swelling were analyzed using FT-IR spectroscopy, thermal analysis, and elemental analysis. Bioadhesive properties were assessed by comparing their interaction with mucin compacts against a positive control (Carbopol). The release rates of metronidazole and acyclovir from the IPEC matrices were measured over 6 hours, and the release mechanisms were analyzed using the Peppas-Sahlin model.
ContextPharmaceutical drug delivery systems

Variables

IV["Type of Eudragit® polymer ratio","pH of complex formation"]
DV["Degree of swelling","Bioadhesion strength","Drug release rate","Drug release mechanism"]
CV["Simulated gastric fluid composition (0.1 M HCl)","Experimental duration (6 hours)","Mucin compact properties","Model drugs (metronidazole, acyclovir)"]
04

Strengths & Limitations

Strengths

  • +Comprehensive material characterization.
  • +Direct assessment of bioadhesion and drug release kinetics.

Limitations

The experiment was conducted in a lab setting using simulated conditions, not in a living organism, so real-world performance might differ.

Reliability & validity

The use of spectroscopic and thermal analysis methods, along with quantitative drug release measurements, provides a degree of reliability. Validity is supported by comparison to a positive control (Carbopol) and adherence to established release models.

Think critically

How might the bioadhesive properties of these polymer complexes be further optimized for different regions of the gastrointestinal tract?

05

Design Principles

"Bioadhesive polymers can be engineered to create localized and sustained drug delivery within specific physiological environments."

This research offers a novel approach to drug delivery system design, focusing on material science to achieve specific functional outcomes. By understanding how polymer properties influence bioadhesion and drug release, designers can create more effective and targeted therapeutic devices.

06

What This Means for Your Design

Researchers made special plastic-like materials that stick to the stomach and release medicine slowly, which is good for treating stomach problems.

How to use in your project

  • 1.Reference this study when exploring material properties for drug delivery or bioadhesive applications in your design project.
07

Add to My Project

08

Quick Cite

(2023). New Carriers for Bioadhesive Gastroretentive Drug Delivery Systems Based on Eudragit® EPO/Eudragit® L100 Interpolyelectrolyte Complexes. Preprints.org. https://doi.org/10.20944/preprints202312.2016.v2 Retrieved from https://designdex.org/study/88d62ecb-6e2d-4049-a358-9bd0b89b0622/bioadhesive-polymer-complexes-enhance-drug-retention-in-the-stomach

Paragraph starter

The development of bioadhesive interpolyelectrolyte complexes, such as those based on Eudragit® EPO/L100, offers a promising avenue for enhancing gastroretentive drug delivery systems. These materials demonstrate significant bioadhesion and controlled swelling in simulated gastric environments, leading to prolonged drug retention and sustained release, as evidenced by studies on metronidazole and acyclovir release mechanisms.

09

Source

Preprints.org

New Carriers for Bioadhesive Gastroretentive Drug Delivery Systems Based on Eudragit® EPO/Eudragit® L100 Interpolyelectrolyte Complexes

journal · 2023

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Questions about this research

What does the research say about bioadhesive polymer complexes enhance drug retention in the stomach?
Design drug delivery systems using bioadhesive polymers that swell in gastric conditions to increase retention time and control drug release. Evidence: Preprints.org (2023).
Why does "Bioadhesive polymer complexes enhance drug retention in the stomach" matter for design?
This research offers a novel approach to drug delivery system design, focusing on material science to achieve specific functional outcomes. By understanding how polymer properties influence bioadhesion and drug release, designers can create more effective and targeted therapeutic devices.
How can designers apply this research?
Design drug delivery systems using bioadhesive polymers that swell in gastric conditions to increase retention time and control drug release.
What were the main findings?
IPECs maintained their shape during 6 hours of swelling in simulated gastric fluid.. IPECs exhibited bioadhesive properties comparable to Carbopol.. Drug release rate increased with the degree of swelling.. The release of metronidazole and acyclovir was controlled by the relaxation of polymeric chains, following the Peppas-Sahlin model.
What research method was used?
Experimental analysis and material characterization.
How strong is the evidence?
Evidence strength is rated Strong effect, based on a 2023 journal from Preprints.org.
What should I do differently in my next project?
When designing oral drug delivery systems intended for prolonged action in the stomach, consider using interpolyelectrolyte complexes or similar bioadhesive polymers that swell in acidic environments.
What are the limitations?
The study focused on specific Eudragit® polymers and two model drugs; results may vary with different polymer combinations or drug types. In vivo efficacy was not assessed.
Is there evidence that drug delivery affects design outcomes?
New polymer complexes designed for stomach retention show good adhesion to stomach lining and control the release of drugs based on how much they swell. This research offers a novel approach to drug delivery system design, focusing on material science to achieve specific functional outcomes. By understanding how polyme Source: Preprints.org (2023).
Where does this polymer complexes research apply?
Pharmaceutical drug delivery systems It sits within user-centred design research on designdex.org.

Related research topics

drug delivery design research · evidence on drug delivery · does drug delivery improve design outcomes · polymer complexes studies for designers · drug delivery and polymer complexes findings · user-centred design research evidence