Strategic Approaches for Colon Targeted Drug Delivery: An Overview of Recent Advancements

Sang Hoon Lee1, Rajiv Bajracharya1, Jeong Youn Min1

  • 1College of Pharmacy, Dongguk University-Seoul, Dongguk-ro 32, Ilsan-Donggu, Goyang 10326, Korea.

Pharmaceutics
|January 19, 2020
PubMed

Insights

Colon targeted drug delivery systems offer a noninvasive approach for treating colonic diseases and delivering sensitive drugs orally. These advanced systems enhance patient compliance and reduce side effects for improved therapeutic outcomes.

Area of Science:

  • Pharmaceutical Sciences
  • Biomedical Engineering

Background:

  • Colon targeted drug delivery systems are crucial for local treatment of colonic diseases, minimizing systemic side effects.
  • They are vital for oral delivery of biologics and macromolecules vulnerable to degradation in the upper gastrointestinal tract.
  • The growing pharmaceutical market for biologics necessitates patient-friendly, noninvasive drug administration methods.

Purpose of the Study:

  • To review recent advancements in colon targeted drug delivery systems.
  • To highlight pharmaceutical applications of these systems, focusing on formulation technologies.
  • To discuss strategies for efficient colonic drug delivery for local and systemic effects.

Main Methods:

  • Exploration of various strategies including pH-dependent, enzyme-triggered, receptor-mediated, and magnetically-driven systems.
  • Review of formulation technologies for colon targeted drug delivery.
  • Analysis of recent advancements and pharmaceutical applications.

Main Results:

  • Colon targeted systems offer improved patient compliance and cost-effectiveness.
  • Various strategies have been developed to achieve efficient drug release in the colon.
  • Formulation technologies are key to successful colon targeted drug delivery.

Conclusions:

  • Colon targeted drug delivery systems are essential for effective treatment of colonic diseases and delivery of macromolecules.
  • Continued research in formulation technologies will enhance the efficacy and patient-friendliness of these systems.
  • Noninvasive colon delivery approaches represent a significant advancement in pharmaceutical drug delivery.

Related Concept Videos

Drug Delivery: Overview01:16

Drug Delivery: Overview

The selection of a drug's delivery route depends upon its physicochemical properties, including lipid or water solubility and ionization, as well as the therapeutic requirement, such as immediate or sustained effect. These routes can be divided into three primary categories: enteral, parenteral, and topical.
Enteral delivery involves administering drugs directly through swallowing, sublingual placement, or buccal application. Orally administered drugs predominantly navigate the...
666
Bioavailability Enhancement: Drug Permeability Enhancement01:27

Bioavailability Enhancement: Drug Permeability Enhancement

Body: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...
149
Bioavailability Enhancement: Drug Stability Enhancement and GI Retention01:05

Bioavailability Enhancement: Drug Stability Enhancement and GI Retention

Body: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...
154
Drug Delivery: Miscellaneous Routes01:22

Drug Delivery: Miscellaneous Routes

Drug delivery methods like oral inhalation, nasal sprays, transdermal patches, eye drops, intravitreal injection,  and rectal administration provide localized effects with reduced toxicity.
Oral inhalation and nasal sprays swiftly transfer drugs across the respiratory epithelium's mucosal layer. Inhaled glucocorticoids and bronchodilators directly target lung conditions such as asthma, while fluticasone nasal spray mitigates allergic rhinitis.
Transdermal patches transport drugs...
678
Bioavailability Enhancement: Determination and Conceptual Approaches in Overcoming Bioavailability Problems01:22

Bioavailability Enhancement: Determination and Conceptual Approaches in Overcoming Bioavailability Problems

Body:Bioavailability is a critical pharmacological concept that measures the extent and rate at which an active drug ingredient or therapeutic moiety enters the systemic circulation, remaining unchanged. It's a pivotal factor in determining a drug's efficacy and safety.The Biopharmaceutics Classification System (BCS) plays an essential role in drug development by categorizing drugs into four classes based on their solubility and permeability. This classification aids in understanding drug...
120
Drug Absorption: Overview01:17

Drug Absorption: Overview

The process of drug absorption signifies the transition of a drug from its site of administration into the plasma. This process is influenced by various factors, including the route of administration, the anatomy of the absorption site, the mechanism of absorption, gut motility, and the drug's physicochemical properties.
When drugs are injected intravenously, they directly enter the systemic circulation. Alternatively, orally administered drugs navigate through the gastrointestinal (GI)...
1.5K