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Related Concept Videos

Site-Targeted Drug Delivery Systems: Polymeric Carriers01:24

Site-Targeted Drug Delivery Systems: Polymeric Carriers

109
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...
109
Bioplastics01:27

Bioplastics

42
Bioplastics derived from microbial processes present a sustainable alternative to conventional petroleum-based plastics. Among these, polyhydroxyalkanoates (PHAs), particularly polyhydroxybutyrates (PHBs), have emerged as prominent candidates due to their biodegradability and biocompatibility. These polymers are synthesized by a variety of bacteria, such as Cupriavidus necator and Pseudomonas putida, which naturally accumulate PHAs as intracellular carbon and energy reserves, especially under...
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Modified-Release Drug Delivery Systems: Rate-Programmed II01:19

Modified-Release Drug Delivery Systems: Rate-Programmed II

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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...
89
Oral Drug Delivery Systems: Delayed-Release Systems01:11

Oral Drug Delivery Systems: Delayed-Release Systems

139
Delayed-release drug delivery systems are specialized pharmaceutical formulations designed to postpone the release of active compounds until the drug reaches a specific region of the gastrointestinal (GI) tract, typically the intestine. These systems are essential for drugs that may cause gastric irritation, are unstable in acidic environments, or need to exert therapeutic effects locally in the intestinal or colonic regions.The core feature of delayed-release systems is the use of enteric...
139
Modified-Release Drug Delivery Systems: Site-Targeted01:24

Modified-Release Drug Delivery Systems: Site-Targeted

96
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.
96
Modified-Release Drug Delivery Systems: Classification01:23

Modified-Release Drug Delivery Systems: Classification

250
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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Related Experiment Video

Updated: Mar 29, 2026

Polymalic Acid-based Nano Biopolymers for Targeting of Multiple Tumor Markers: An Opportunity for Personalized Medicine?
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From Pathology to Formulation: Designing Biodegradable Polymers for Personalized Drug Delivery.

Mariann Dinya1,2, Elek Dinya3, Gábor M Mórotz1,2

  • 1Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, Semmelweis University, H-1089 Budapest, Hungary.

Pharmaceutics
|March 28, 2026
PubMed
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Biodegradable polymer carriers show disease-specific compatibility, guiding selection for targeted drug delivery. Matching polymer composition to disease pathology enhances therapeutic benefits, enabling personalized medicine approaches.

Keywords:
biodegradable polymersdisease-driven designpathological microenvironment

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Area of Science:

  • Biomaterials Science
  • Drug Delivery
  • Nanotechnology

Background:

  • Polymer carrier selection for drug delivery often overlooks disease-specific evidence, relying instead on material availability or trigger responsiveness.
  • Preclinical formulations may contain implicit design rules linking polymer properties to pathological environments.
  • This study investigates reproducible associations between biodegradable polymers and diseases to guide carrier selection.

Purpose of the Study:

  • To identify material-disease associations across biodegradable polymer systems.
  • To derive formulation-oriented guidance for disease-calibrated carrier selection.
  • To establish a framework for rational carrier choice based on disease microenvironment signatures.

Main Methods:

  • Systematic review of 65 preclinical in vivo studies (2020-2025) on inflammatory bowel disease, arthritis, cardiovascular inflammation, and solid tumors.
  • Extraction of variables: polymer family, backbone chemistry, stimulus responsiveness, disease model, and therapeutic benefit.
  • Analysis of associations using cross-tabulation, chi-square statistics, Cramér's V, and direction-of-effect synthesis.

Main Results:

  • Distinct material-disease clustering observed: ionizable polysaccharides/methacrylates for intestinal inflammation (pH/ion triggers).
  • Enzyme-degradable hyaluronic acid matrices linked to joint disorders (protease overexpression).
  • Oxidation-sensitive polyethers and redox-active hybrids prevalent in atherosclerosis/tumors (oxidative stress); composite systems for tumors (heterogeneity).
  • Therapeutic improvement correlated with alignment of polymer motifs and disease biochemical drivers.

Conclusions:

  • Successful biodegradable polymer carriers demonstrate disease-specific compatibility, not universal applicability.
  • Polymer selection can be informed by pathological context, even without direct outcome comparisons.
  • A formulation-oriented framework supports rational carrier selection for personalized drug delivery based on disease microenvironments.