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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...

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[In vitro studies on ciprofloxacin-milk interaction using LC-MS methode].

Katalin Pápai1, Krisztina Ludányi, Marianna Budai

  • 1Semmelweis Egyetem Gyógyszerészeti Intézet, Budapest, Hogyes Endre utca 7.-1092.

Acta Pharmaceutica Hungarica
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Dairy products can reduce the absorption of fluoroquinolone antibiotics like ciprofloxacin. This study found that milk significantly decreases the amount of bioavailable ciprofloxacin in vitro.

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Area of Science:

  • Pharmacology
  • Drug absorption studies
  • Analytical chemistry

Context:

  • Fluoroquinolone antibiotics are susceptible to interactions with dietary components.
  • Multivalent ions in foods, particularly dairy, can form complexes with fluoroquinolones.
  • Reduced bioavailability of fluoroquinolones due to food interactions is a known concern.

Purpose:

  • To investigate the in vitro dissolution profile of ciprofloxacin (CPFX) tablets.
  • To assess the impact of a low-fat milky medium on ciprofloxacin bioavailability compared to aqueous media.
  • To analyze CPFX dissolution across three different pH values simulating gastrointestinal conditions.

Summary:

  • The study evaluated ciprofloxacin tablet dissolution in aqueous and low-fat milk media at various pH levels.
  • High-performance liquid chromatography coupled with mass spectrometry (LC-MS) and solid-phase extraction (SPE) were used for analysis.
  • Results indicate that the presence of milk significantly reduces the amount of bioavailable ciprofloxacin.

Impact:

  • Highlights a potential drug-food interaction relevant to ciprofloxacin therapy.
  • Informs clinical practice regarding co-administration of ciprofloxacin with dairy products.
  • Provides in vitro evidence supporting reduced fluoroquinolone bioavailability in the presence of milk.