Related Experiment Video

Updated: Jun 2, 2026

Ex Vivo Corneal Organ Culture Model for Wound Healing Studies
06:46

Ex Vivo Corneal Organ Culture Model for Wound Healing Studies

Published on: February 15, 2019

Corneal cell culture models: a tool to study corneal drug absorption

Surajit Dey

    Expert Opinion on Drug Metabolism & Toxicology
    |April 20, 2011
    PubMed

    More Related Videos

    Corneal Epithelial Abrasion with Ocular Burr As a Model for Cornea Wound Healing07:28

    Corneal Epithelial Abrasion with Ocular Burr As a Model for Cornea Wound Healing

    Published on: July 10, 2018

    Models and Methods to Evaluate Transport of Drug Delivery Systems Across Cellular Barriers18:57

    Models and Methods to Evaluate Transport of Drug Delivery Systems Across Cellular Barriers

    Published on: October 17, 2013

    Related Concept Videos

    Methods for Studying Drug Absorption: In vitro01:16

    Methods for Studying Drug Absorption: In vitro

    In vitro experiments are crucial for understanding the transport and absorption of drugs through biological materials. These studies employ varied methods such as the diffusion cell method, the everted sac technique, and the everted ring technique.
    The diffusion cell method uses a two-compartment cell, including a donor compartment with the drug solution, which simulates the environment where the drug is applied, and a receptor compartment with a buffer solution, which simulates the environment...
    Methods for Studying Drug Absorption: In situ01:09

    Methods for Studying Drug Absorption: In situ

    In situ experiments, such as the Doluisio method and Single-Pass Perfusion technique, provide critical insights into drug uptake by simulating in vivo conditions for drug absorption.
    The Doluisio method involves perfusing a prepared segment of a rat's small intestine with a solution of radiolabeled drug and a non-absorbable marker. This helps to differentiate between absorbed and non-absorbed drug concentrations. The intestinal segment is connected at both ends using tubing and syringes,...
    Ophthalmic Drug Delivery Systems01:23

    Ophthalmic Drug Delivery Systems

    Ophthalmic drug delivery faces major limitations due to poor absorption across the corneal membrane. This process is primarily driven by diffusion and is influenced by two main factors: the physicochemical properties of the drug and tear drainage. Most ophthalmic drugs, such as pilocarpine, epinephrine, atropine, and local anesthetics, are weak bases. They are typically formulated at an acidic pH to enhance chemical stability. However, this leads to high ionization, reducing their ability to...
    In Vitro Drug Dissolution: Compendial Testing Models I01:13

    In Vitro Drug Dissolution: Compendial Testing Models I

    Compendial dissolution methods are standardized procedures defined by pharmacopeias to evaluate the rate at which a drug dissolves in a specific medium. These methods ensure batch-to-batch consistency, enable quality control, and support the prediction of drug bioavailability. They are critical for both immediate and modified-release drug products.The apparatuses used for dissolution testing differ in their design and mechanical function, but all aim to simulate the physiological environment of...
    In Vitro Drug Dissolution: Compendial Testing Models II01:09

    In Vitro Drug Dissolution: Compendial Testing Models II

    Various dissolution methods are utilized to assess a drug’s dissolution rate, including the flow-through cell, paddle-over-disk, cylinder, and reciprocating disk methods.The flow-through cell apparatus (USP (United States Pharmacopeia) method 4) comprises a reservoir for the dissolution medium and a pump that propels the medium through the cell containing the test sample. This method is crucial for assessing modified-release dosage forms with minimally soluble active ingredients, maintaining...