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Related Concept Videos

Modified-Release Drug Delivery Systems: Site-Targeted01:24

Modified-Release Drug Delivery Systems: Site-Targeted

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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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Site-Targeted Drug Delivery Systems: Polymeric Carriers01:24

Site-Targeted Drug Delivery Systems: Polymeric Carriers

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Polymeric carriers enhance targeted drug delivery by increasing efficacy while minimizing off-target effects. These carriers comprise a biodegradable polymeric backbone integrated with functional elements that enable targeting, improve physicochemical properties, and regulate drug release.Targeting MechanismsThe targeting ability of polymeric carriers is mediated by a homing device, which is a molecular recognition component designed to selectively bind to specific tissues or cells. Monoclonal...
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Modified-Release Drug Delivery Systems: Classification01:23

Modified-Release Drug Delivery Systems: Classification

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Modified-release drug delivery systems improve drug efficacy and minimize side effects by controlling the rate and location of drug release. These systems fall into three categories: rate-programmed, stimuli-activated, and site-targeted.Rate-programmed systems release drugs at a predetermined rate, maintaining consistent therapeutic levels and reducing fluctuations that could lead to toxicity or subtherapeutic effects. These systems use polymeric matrices, reservoir-based designs, or osmotic...
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Drug Elimination by Renal Route: Tubular Secretion01:15

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Once the process of glomerular filtration is completed, blood carrying unfiltered drug molecules traverses through efferent arterioles and makes its way into the peritubular capillaries in the proximal tubule. A variety of carriers play a pivotal role in actively secreting drugs from these peritubular capillaries into the tubular fluid. The organic anion transporter transfers acidic drugs, against an electrochemical gradient, from the peritubular capillaries into the renal tubule cells and...
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Oral Drug Delivery Systems: Continuous-Release Systems01:26

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Continuous-release drug delivery systems offer a strategic approach to maintaining therapeutic drug levels over extended periods following oral administration. By modulating the release rate of active pharmaceutical ingredients, these systems minimize fluctuations in plasma concentrations, which enhances clinical efficacy and reduces the need for frequent dosing. Such characteristics make them particularly advantageous in managing chronic diseases where patient adherence and stable drug...
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Modified-Release Drug Delivery Systems: Rate-Programmed II01:19

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Rate-programmed drug delivery systems release drugs in a controlled manner to maintain therapeutic levels. Three main designs include reservoir, matrix, and hybrid systems.Reservoir systems consist of a drug core enclosed within a membrane that controls drug release. In non-swelling reservoir systems, polymers like ethyl cellulose or polymethacrylates are used. These do not hydrate in aqueous media and control release through membrane thickness, porosity, or insolubility. This type includes...
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Related Experiment Video

Updated: Mar 30, 2026

Direct Drug Delivery to Kidney via the Renal Artery
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Published on: April 17, 2021

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Kidney-targeted drug delivery systems.

Peng Zhou1, Xun Sun1, Zhirong Zhang1

  • 1Key Laboratory of Drug Targeting and Drug Delivery Systems, Ministry of Education, West China School of Pharmacy, Sichuan University, Chengdu 610041, China.

Acta Pharmaceutica Sinica. B
|November 19, 2015
PubMed
Summary

Kidney-targeted drug delivery systems enhance treatment for renal diseases. Macromolecular carriers, prodrugs, nanoparticles, and liposomes are key strategies for effective kidney drug delivery.

Keywords:
Kidney-targetedLiposomesMacromolecular carrierNanoparticlesProdrug

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Area of Science:

  • Pharmacology
  • Biomedical Engineering
  • Drug Delivery

Background:

  • Renal diseases require effective and safe therapeutic strategies.
  • Current drug delivery methods often lack specificity for kidney targets.
  • Improving drug efficacy and reducing side effects in kidney treatment is a significant challenge.

Purpose of the Study:

  • To review strategies for developing kidney-targeted drug delivery systems.
  • To highlight the role of macromolecular carriers and prodrugs in renal targeting.
  • To explore novel technologies for achieving targeted drug delivery to the kidney.

Main Methods:

  • Literature review of existing and emerging kidney-targeted drug delivery strategies.
  • Analysis of the mechanisms of macromolecular carriers and prodrugs in renal targeting.
  • Discussion of advanced delivery systems like nanoparticles and liposomes.

Main Results:

  • Various strategies exist for kidney-targeted drug delivery.
  • Macromolecular carriers and prodrugs are crucial for targeting specific kidney cells.
  • Novel technologies enable the creation of renal targeting conjugates.
  • Nanoparticles and liposomes show promise for kidney drug delivery.

Conclusions:

  • Kidney-targeted drug delivery systems offer a promising approach for treating renal diseases.
  • Advanced delivery systems, including nanoparticles and liposomes, are vital for achieving targeted drug delivery to the kidney.
  • Continued innovation in this field is essential for improving patient outcomes in nephrology.