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Bioavailability Enhancement: Drug Stability Enhancement and GI Retention01:05

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Improving a drug's stability in the gastrointestinal (GI) tract is paramount for enhancing its bioavailability and therapeutic effectiveness. Various strategies are employed to protect the drug from the harsh gastric milieu and to ensure its release and absorption at the desired site within the GI tract.Polymer coatings are one such method used to shield drugs from the stomach's acidic environment. By preventing premature drug release, these coatings improve the bioavailability of unstable...
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Site-targeted drug delivery systems enhance therapeutic efficacy while minimizing systemic toxicity and treatment costs. Unlike conventional methods, these systems ensure precise drug delivery, improving bioavailability and reducing side effects. Targeted drug delivery is classified into three levels. First-order targeting directs drugs to the capillary beds of specific organs or tissues. Second-order targets specific cell types, such as tumor cells, using receptor-mediated interactions.
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After oral administration, poor permeability often limits the rate at which drugs are absorbed through the intestinal epithelium. Enhancing drug permeability is crucial for effective therapy, and several strategies have been developed to overcome this challenge.One effective strategy involves the use of lipid-based formulations. These formulations enhance dissolution and solubility, targeting physiological mechanisms to increase drug absorption. This includes stimulating bile salt secretion,...
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Fabricating Superhydrophobic Polymeric Materials for Biomedical Applications
09:22

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Published on: August 28, 2015

Surface modification and drug delivery for biointegration.

Kyung Jae Jeong1, Daniel S Kohane

  • 1Laboratory for Biomaterials & Drug Delivery, Department of Anesthesiology, Division of Critical Care Medicine, Children's Hospital Boston, Harvard Medical School, 300 Longwood Avenue, Boston, MA 02115, USA.

Therapeutic Delivery
|July 24, 2012
PubMed
Summary

Improving implant biointegration is crucial for preventing device failure. Recent advances in surface chemistry, drug delivery, and antifouling techniques enhance the connection between medical devices and body tissues.

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Area of Science:

  • Biomaterials Science
  • Tissue Engineering
  • Medical Device Technology

Background:

  • Biointegration, the connection between biomedical devices and host tissue, is vital for implant success.
  • Poor biointegration is a common cause of implant failure and adverse medical outcomes.
  • Understanding biological systems and material properties is key to improving implant performance.

Purpose of the Study:

  • To review recent advancements in enhancing implant biointegration.
  • To explore strategies involving surface chemistry modification and drug delivery.
  • To highlight the importance of antifouling methods for successful integration.

Main Methods:

  • Review of current literature on surface chemistry modifications for implants.
  • Analysis of drug delivery systems designed to promote tissue integration.
  • Evaluation of antifouling strategies to prevent adverse biological responses.
  • Discussion of emerging technologies in biomaterials and biointegration.

Main Results:

  • Significant progress has been made in tailoring implant surfaces for better tissue response.
  • Drug-eluting implants show promise in modulating local biological environments for enhanced integration.
  • Antifouling surfaces reduce complications, facilitating a more stable biointerphase.
  • Technological advancements are continuously expanding the possibilities for improved biointegration.

Conclusions:

  • Surface chemistry, drug delivery, and antifouling approaches are critical for successful biointegration.
  • Continued research and technological innovation are essential for overcoming challenges in implant design.
  • Enhanced biointegration strategies promise to reduce implant failure rates and improve patient outcomes.