Design and evaluation of rhubarb total free anthraquinones oral colon-specific drug delivery granules to improve the purgative effect

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Oral colon-specific drug delivery system reduces the nephrotoxicity of rhubarb anthraquinones when they produce purgative efficacy

Rhubarb is commonly used to treat constipation in China and anthraquinones (AQs) are the active components present in rhubarb. However, an increasing number of studies have reported that AQs induce nephrotoxicity. In the present study, rhubarb total free anthraquinones (RTFA) oral colon-specific drug delivery granules (RTFA-OCDD-GN) were prepared to determine whether RTFA-OCDD-GN could reduce t...

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The Research on Effect-Enhancing and Toxicity-Reducing of Rhubarb Total Anthraquinones Caused by Oral Colon-Specific Drug Delivery System When Producing Purgative Efficacy

In the present study, we aimed to prepare rhubarb total anthraquinones oral colon-specific drug delivery granules (RTA-OCDDGN) for delivering rhubarb free anthraquinones to colon. RTA-OCDD-GN was successfully prepared through a double-layer coating process using chitosan as an inner layer and Eudragit S100 as an outer enteric coating layer. The pharmacodynamics and toxicological results showed ...

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Different Approaches to Design and Evaluation of Colon Specific Drug Delivery Systems

Oral administration of different dosage forms is the most commonly used method due to greater flexibility in design of dosage form and high patient acceptance, but the gastrointestinal tract presents several formidable barriers to drug delivery. In oral colon-specific drug delivery system, colon has a large amount of lymphoma tissue (facilitates direct absorption in to the blood), negligible br...

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ژورنال

عنوان ژورنال: Brazilian Journal of Pharmaceutical Sciences

سال: 2019

ISSN: 2175-9790

DOI: 10.1590/s2175-97902019000117110