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Microorganisms in Medicine and Therapeutics01:29

Microorganisms in Medicine and Therapeutics

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Microorganisms play a fundamental role in vaccine development, gene therapy, and therapeutic production. Their biological properties are harnessed to advance medicine and public health. Beyond immunization, microorganisms contribute to gut health, antibiotic synthesis, and genetic disease treatment.Live Attenuated and Inactivated VaccinesLive attenuated vaccines, such as the measles, mumps, and rubella (MMR) vaccine, utilize weakened forms of pathogens to closely resemble natural infections.
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Bioavailability Enhancement: Drug Stability Enhancement and GI Retention01:05

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Body:Improving a drug's stability in the gastrointestinal (GI) tract is paramount for enhancing its bioavailability and therapeutic effectiveness. Various strategies are employed to protect the drug from the harsh gastric milieu and to ensure its release and absorption at the desired site within the GI tract.Polymer coatings are one such method used to shield drugs from the stomach's acidic environment. By preventing premature drug release, these coatings improve the bioavailability of unstable...
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Modified-Release Drug Delivery Systems: Site-Targeted01:24

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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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Modified-Release Drug Delivery Systems: Overview01:19

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Modified-release dosage forms are designed to address the limitations of drugs with short biological half-lives. These forms maintain stable therapeutic drug concentrations over extended periods, reducing the need for frequent dosing. A consistent drug level helps minimize peak-trough fluctuations, which can reduce adverse effects, lower the risk of drug resistance, and improve overall treatment effectiveness.One common type of modified-release form is the extended-release (ER) formulation. ER...
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Site-Targeted Drug Delivery Systems: Polymeric Carriers01:24

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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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Oral Drug Delivery Systems: Delayed-Release Systems01:11

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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...
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Author Spotlight: Process Development for the Spray-Drying of Probiotic Bacteria and Evaluation of the Product Quality
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Next-Generation Microencapsulation Technologies for Probiotic Protection and Precision Delivery.

Yixin Zhu1, Longxian Lv2, Bingbing Du1

  • 1Jinan Microecological Biomedicine Shandong Laboratory, Jinan, Shandong, China.

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Microencapsulation protects beneficial probiotics during oral delivery, enhancing their survival and therapeutic efficacy. This review explores advanced techniques for improved stability and targeted delivery of probiotics.

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Area of Science:

  • Microbiology
  • Biotechnology
  • Materials Science

Background:

  • Probiotics provide health benefits but struggle with oral delivery survival.
  • Gastric acid, bile salts, and gut conditions reduce probiotic viability.
  • Microencapsulation offers a solution to protect probiotics.

Purpose of the Study:

  • To review advanced microencapsulation materials and techniques for probiotics.
  • To examine strategies for enhancing probiotic stability and targeted delivery.
  • To assess safety and scalability for industrial applications.

Main Methods:

  • Comprehensive literature review of microencapsulation technologies.
  • Analysis of materials and techniques for probiotic protection.
  • Evaluation of advanced delivery systems like pH-responsive and inflammation-targeted microcapsules.

Main Results:

  • Cutting-edge materials and techniques significantly improve probiotic stability.
  • Advanced delivery systems ensure precise intestinal release and colonization.
  • Safety and scalability challenges require further investigation.

Conclusions:

  • Next-generation microencapsulation holds promise for safer, effective probiotic therapies.
  • Biocompatible materials and cost-effective production are crucial for scalability.
  • Personalized probiotic treatments can be enabled through advanced delivery systems.