Special Issue "Advances in Pickering-Emulsion-Based Drug Delivery Systems"

A special issue of Pharmaceutics (ISSN 1999-4923). This special issue belongs to the section "Physical Pharmacy and Formulation".

Deadline for manuscript submissions: 30 October 2023 | Viewed by 1074

Special Issue Editors

Faculty of Health Sciences and Sports, Macao Polytechnic University, Macau, China
Interests: drug delivery; nanocrystals; emulsions; nanoparticles
College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China
Interests: oral delivery of poorly water-soluble drugs; nanocrystals
Key Laboratory of Smart Drug Delivery of MOE, School of Pharmacy, Fudan University, Shanghai 201203, China
Interests: drug delivery; micro/nanoparticles
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Special Issue Information

Dear Colleagues,

We are pleased to invite you to submit an article to this Special Issue, entitled “Advances in Pickering-Emulsion-Based Drug Delivery Systems”. Pickering emulsions are surfactant-free emulsions stabilized by solid particles. Their unique structure endows Pickering emulsions with good stability, excellent biocompatibility, and environmental friendliness. Pickering emulsions have displayed great potential in drug delivery, e.g., high drug loading and stability, controlled release, targeted delivery, and adjuvant function. An increased interest in Pickering-emulsion-based drug delivery systems has emerged over the last 15 years.

This Special Issue aims to provide a forum to promote the development and biomedical applications of Pickering emulsions. Original research articles and reviews are welcome. Potential topics include the following: novel solid stabilizers, types, and preparations of Pickering emulsions; mechanisms and factors governing the formation and stability of Pickering emulsions; achievements of Pickering emulsions in terms of enhanced drug delivery via various routes, e.g., oral, dermal, pulmonary, and parenteral administration; the in vivo fates of Pickering emulsions and factors affecting their fates; clinical dosage forms; and quality control. Other submissions that facilitate the development of Pickering emulsions are also welcome.

Dr. Tao Yi
Dr. Jifen Zhang
Dr. Yi Lu
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Pharmaceutics is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2900 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.


  • pickering emulsion
  • drug delivery
  • solid particle stabilizer
  • preparation
  • stability
  • characterization
  • biomedical applications
  • bioavailability
  • permeability
  • controlled release
  • in vivo fate

Published Papers (1 paper)

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Pickering Emulsions Enhance Oral Bioavailability of Curcumin Nanocrystals: The Effect of Oil Types
Pharmaceutics 2023, 15(5), 1341; https://doi.org/10.3390/pharmaceutics15051341 - 26 Apr 2023
Viewed by 840
Nanocrystals (NCs) have the potential to enhance the oral bioavailability of Class IV drugs in the Biopharmaceutical Classification System (BCS) due to the absorption of the intact crystals. The performance is compromised by the dissolution of NCs. Drug NCs have recently been adopted [...] Read more.
Nanocrystals (NCs) have the potential to enhance the oral bioavailability of Class IV drugs in the Biopharmaceutical Classification System (BCS) due to the absorption of the intact crystals. The performance is compromised by the dissolution of NCs. Drug NCs have recently been adopted as solid emulsifiers to prepare nanocrystal self-stabilized Pickering emulsions (NCSSPEs). They are advantageous in high drug loading and low side effects due to the specific drug loading mode and the absence of chemical surfactants. More importantly, NCSSPEs may further enhance the oral bioavailability of drug NCs by impeding their dissolution. This is especially true for BCS IV drugs. In this study, curcumin (CUR), a typical BCS IV drug, was adopted to prepare CUR-NCs stabilized Pickering emulsions using either indigestible (isopropyl palmitate, IPP) or digestible (soybean oil, SO) oils, i.e., IPP-PEs and SO-PEs. The optimized formulations were spheric with CUR-NCs adsorbed on the water/oil interface. The CUR concentration in the formulation reached 20 mg/mL, which was far beyond the solubility of CUR in IPP (158.06 ± 3.44 μg/g) or SO (124.19 ± 2.40 μg/g). Moreover, the Pickering emulsions enhanced the oral bioavailability of CUR-NCs, being 172.85% for IPP-PEs and 152.07% for SO-PEs. The digestibility of the oil phase affected the amounts of CUR-NCs that remained intact in lipolysis and, thus, the oral bioavailability. In conclusion, converting NCs into Pickering emulsions provides a novel strategy to enhance the oral bioavailability of CUR and BCS IV drugs. Full article
(This article belongs to the Special Issue Advances in Pickering-Emulsion-Based Drug Delivery Systems)
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