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Touzout Z, Abdellaoui N, Hadj-Hamou AS. Conception of pH-sensitive calcium alginate/poly vinyl alcohol hydrogel beads for controlled oral curcumin delivery systems. Antibacterial and antioxidant properties. Int J Biol Macromol 2024; 263:130389. [PMID: 38403207 DOI: 10.1016/j.ijbiomac.2024.130389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 02/13/2024] [Accepted: 02/21/2024] [Indexed: 02/27/2024]
Abstract
Curcumin, a bioactive compound derived from the rhizome of Curcuma longa, has gained widespread attention for its potential therapeutic properties, including anti-inflammatory, antioxidant and anticancer effects. However, its poor aqueous solubility, instability and limited bioavailability have hindered its clinical applications. New beads formulations based on sodium alginate biopolymer (SA) and poly vinyl alcohol (PVA) were successfully prepared and evaluated as a potential drug vehicle for extended release of curcumin (Cur). Pristine and curcumin loaded calcium alginate/poly vinyl alcohol beads (CA/PVA and CA/PVA/Cur) at different compositions of SA and PVA were prepared by an ionotropic gelation method of SA followed by two freeze-thawing (FT) cycles for further crosslinking of PVA. Characterization techniques, such as scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), UV-Visible spectroscopy, thermogravimetric analysis (TGA) and x-ray diffraction (XRD) were used to confirm the successful microencapsulation of curcumin within the CA/PVA microcapsules. Furthermore, the swelling of pristine beads, pH-sensitive properties and in vitro release studies of curcumin loaded beads were investigated at 37 °C in simulated gastric fluid (SGF), simulated intestinal fluid (SIF) and simulated colonic fluid (SCF). The effect of the polymer blend ratio, the encapsulation efficiency (EE %) of curcumin, the loading capacity (LC μg/mg), the sphericity factor (SF), the antioxidant activity of the elaborated beads and their antimicrobial properties against bacteria and fungi were just as much evaluated. The obtained results indicate that the swelling and the behavior of the developed beads were influenced by the pH of the test medium and the PVA content. The introduction of PVA into the SA matrix greatly enhanced the physicochemical properties, the encapsulation efficiency and the loading capacity of the elaborated microparticles. Results also suggested that the antioxidant activity of the loaded beads (CA/PVA/Cur) showed a higher DPPH radical scavenging activity while the bacterial and fungal strains proved sensitive to the different formulations used in the assay. Moreover, the important drug encapsulation efficiency and the sustainable drug release of these materials make them promising for the development of new drug carrier systems for colon targeting.
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Affiliation(s)
- Zineb Touzout
- Laboratory of Polymer Materials, Faculty of Chemistry, University of Sciences and Technology Houari Boumediene (USTHB), BP 32, El Alia, Algiers 16111, Algeria
| | - Naima Abdellaoui
- Laboratory of Polymer Materials, Faculty of Chemistry, University of Sciences and Technology Houari Boumediene (USTHB), BP 32, El Alia, Algiers 16111, Algeria.
| | - Assia Siham Hadj-Hamou
- Laboratory of Polymer Materials, Faculty of Chemistry, University of Sciences and Technology Houari Boumediene (USTHB), BP 32, El Alia, Algiers 16111, Algeria
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2
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Xiang H, Zhao W, Jiang K, He J, Chen L, Cui W, Li Y. Progress in regulating inflammatory biomaterials for intervertebral disc regeneration. Bioact Mater 2024; 33:506-531. [PMID: 38162512 PMCID: PMC10755503 DOI: 10.1016/j.bioactmat.2023.11.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 11/04/2023] [Accepted: 11/29/2023] [Indexed: 01/03/2024] Open
Abstract
Intervertebral disc degeneration (IVDD) is rising worldwide and leading to significant health issues and financial strain for patients. Traditional treatments for IVDD can alleviate pain but do not reverse disease progression, and surgical removal of the damaged disc may be required for advanced disease. The inflammatory microenvironment is a key driver in the development of disc degeneration. Suitable anti-inflammatory substances are critical for controlling inflammation in IVDD. Several treatment options, including glucocorticoids, non-steroidal anti-inflammatory drugs, and biotherapy, are being studied for their potential to reduce inflammation. However, anti-inflammatories often have a short half-life when applied directly and are quickly excreted, thus limiting their therapeutic effects. Biomaterial-based platforms are being explored as anti-inflammation therapeutic strategies for IVDD treatment. This review introduces the pathophysiology of IVDD and discusses anti-inflammatory therapeutics and the components of these unique biomaterial platforms as comprehensive treatment systems. We discuss the strengths, shortcomings, and development prospects for various biomaterials platforms used to modulate the inflammatory microenvironment, thus providing guidance for future breakthroughs in IVDD treatment.
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Affiliation(s)
- Honglin Xiang
- Department of Orthopaedics, Laboratory of Biological Tissue Engineering and Digital Medicine, Affiliated Hospital of North Sichuan Medical College, No. 1 The South of Maoyuan Road, Nanchong, Sichuan, 637000, PR China
| | - Weikang Zhao
- Department of Orthopedics, The First Affiliated Hospital of Chongqing Medical University, Orthopedic Laboratory of Chongqing Medical University, No.1 Youyi Road, Yuzhong District, Chongqing, 400016, PR China
| | - Ke Jiang
- Department of Orthopaedics, Laboratory of Biological Tissue Engineering and Digital Medicine, Affiliated Hospital of North Sichuan Medical College, No. 1 The South of Maoyuan Road, Nanchong, Sichuan, 637000, PR China
| | - Jiangtao He
- Department of Orthopaedics, Laboratory of Biological Tissue Engineering and Digital Medicine, Affiliated Hospital of North Sichuan Medical College, No. 1 The South of Maoyuan Road, Nanchong, Sichuan, 637000, PR China
| | - Lu Chen
- Department of Orthopaedics, Laboratory of Biological Tissue Engineering and Digital Medicine, Affiliated Hospital of North Sichuan Medical College, No. 1 The South of Maoyuan Road, Nanchong, Sichuan, 637000, PR China
| | - Wenguo Cui
- Department of Orthopaedics, Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases, Shanghai Institute of Traumatology and Orthopaedics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 197 Ruijin 2nd Road, Shanghai, 200025, PR China
| | - Yuling Li
- Department of Orthopaedics, Laboratory of Biological Tissue Engineering and Digital Medicine, Affiliated Hospital of North Sichuan Medical College, No. 1 The South of Maoyuan Road, Nanchong, Sichuan, 637000, PR China
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3
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Kállai-Szabó N, Farkas D, Lengyel M, Basa B, Fleck C, Antal I. Microparticles and multi-unit systems for advanced drug delivery. Eur J Pharm Sci 2024; 194:106704. [PMID: 38228279 DOI: 10.1016/j.ejps.2024.106704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 01/12/2024] [Accepted: 01/13/2024] [Indexed: 01/18/2024]
Abstract
Microparticles have unique benefits in the formulation of multiparticulate and multi-unit type pharmaceutical dosage forms allowing improved drug safety and efficacy with favorable pharmacokinetics and patient centricity. On the other hand, the above advantages are served by high and well reproducible quality attributes of the medicinal product where even flexible design and controlled processability offer success as well as possible longer product life-cycle for the manufacturers. Moreover, the specific demands of patients can be taken into account, including simplified dosing regimens, flexible dosage, drug combinations, palatability, and ease of swallowing. In the more than 70 years since the first modified-release formulation appeared on the market, many new formulations have been marketed and many publications have appeared in the literature. More unique and newer pharmaceutical technologies and excipients have become available for producing tailor-made particles with micrometer dimensions and beyond. All these have contributed to the fact that the sub-units (e.g. minitablets, pellets, microspheres) that make up a multiparticulate system can vary widely in composition and properties. Some units have mucoadhesive properties and others can float to contribute to a suitable release profile that can be designed for the multiparticulate formula as a whole. Nowadays, there are some available formulations on the market, which are able to release the active substance even for several months (3 or 6 months depending on the type of treatment). In this review, the latest developments in technologies that have been used for a long time are presented, as well as innovative solutions such as the applicability of 3D printing to produce subunits of multiparticulate systems. Furthermore, the diversity of multiparticulate systems, different routes of administration are also presented, touching the ones which are capable of carrying the active substance as well as the relevant, commercially available multiparticle-based medical devices. The versatility in size from 1 µm and multiplicity of formulation technologies promise a solid foundation for the future applications of dosage form design and development.
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Affiliation(s)
- Nikolett Kállai-Szabó
- Department of Pharmaceutics, Semmelweis University, Hőgyes Str. 7, H-1092 Budapest, Hungary
| | - Dóra Farkas
- Department of Pharmaceutics, Semmelweis University, Hőgyes Str. 7, H-1092 Budapest, Hungary
| | - Miléna Lengyel
- Department of Pharmaceutics, Semmelweis University, Hőgyes Str. 7, H-1092 Budapest, Hungary
| | - Bálint Basa
- Department of Pharmaceutics, Semmelweis University, Hőgyes Str. 7, H-1092 Budapest, Hungary
| | - Christian Fleck
- Department of Pharmaceutics, Semmelweis University, Hőgyes Str. 7, H-1092 Budapest, Hungary
| | - István Antal
- Department of Pharmaceutics, Semmelweis University, Hőgyes Str. 7, H-1092 Budapest, Hungary.
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4
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Longre S, Rana D, Rangra S, Jindal AB, Salave S, Vitore J, Benival D. Quality-by-Design Based Development of Doxycycline Hyclate-Loaded Polymeric Microspheres for Prolonged Drug Release. AAPS PharmSciTech 2024; 25:49. [PMID: 38424393 DOI: 10.1208/s12249-024-02760-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2023] [Accepted: 02/06/2024] [Indexed: 03/02/2024] Open
Abstract
This study explores a novel approach to address the challenges of delivering highly water-soluble drug molecules by employing hydrophobic ion-pairing (HIP) complexes within poly (lactic-co-glycolic acid) (PLGA) microspheres. The HIP complex, formed between doxycycline hyclate (DH) and docusate sodium (DS), renders the drug hydrophobic. The development of the microspheres was done using the QbD approach, namely, Box-Behnken Design (BBD). A comprehensive characterization of the HIP complex confirmed the successful conversion of DH. DH and the HIP complex were effectively loaded into PLGA microspheres using the oil-in-water (O/W) emulsion solvent evaporation method. Results demonstrated significant improvements in percentage entrapment efficiency (% EE) and drug loading (% DL) for DH within the HIP complex-loaded PLGA microspheres compared to DH-loaded microspheres alone. Additionally, the initial burst release of DH reduced to 3% within the initial 15 min, followed by sustained drug release over 8 days. The modified HIP complex strategy offers a promising platform for improving the delivery of highly water-soluble small molecules. It provides high % EE, % DL, minimal initial burst release, and sustained release, thus having the potential to enhance patient compliance and drug delivery efficiency.
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Affiliation(s)
- Suraj Longre
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research -Ahmedabad (NIPER-A), Gandhinagar, India
| | - Dhwani Rana
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research -Ahmedabad (NIPER-A), Gandhinagar, India
| | - Shagun Rangra
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research -Ahmedabad (NIPER-A), Gandhinagar, India
| | - Anil B Jindal
- Department of Pharmacy, Birla Institute of Technology and Science Pilani (BITS PILANI), Pilani Campus, Rajasthan, 333031, India
| | - Sagar Salave
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research -Ahmedabad (NIPER-A), Gandhinagar, India
| | - Jyotsna Vitore
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research -Ahmedabad (NIPER-A), Gandhinagar, India
| | - Derajram Benival
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research -Ahmedabad (NIPER-A), Gandhinagar, India.
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5
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Li X, Wu X. The microspheres/hydrogels scaffolds based on the proteins, nucleic acids, or polysaccharides composite as carriers for tissue repair: A review. Int J Biol Macromol 2023; 253:126611. [PMID: 37652329 DOI: 10.1016/j.ijbiomac.2023.126611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 07/31/2023] [Accepted: 08/28/2023] [Indexed: 09/02/2023]
Abstract
There are many studies on specific macromolecules and their contributions to tissue repair. Macromolecules have supporting and protective effects in organisms and can help regrow, reshape, and promote self-repair and regeneration of damaged tissues. Macromolecules, such as proteins, nucleic acids, and polysaccharides, can be constructed into hydrogels for the preparation of slow-release drug agents, carriers for cell culture, and platforms for gene delivery. Hydrogels and microspheres are fabricated by chemical crosslinking or mixed co-deposition often used as scaffolds, drug carriers, or cell culture matrix, provide proper mechanical support and nutrient delivery, a well-conditioned environment that to promote the regeneration and repair of damaged tissues. This review provides a comprehensive overview of recent developments in the construction of macromolecules into hydrogels and microspheres based on the proteins, nucleic acids, polysaccharides and other polymer and their application in tissue repair. We then discuss the latest research trends regarding the advantages and disadvantages of these composites in repair tissue. Further, we examine the applications of microspheres/hydrogels in different tissue repairs, such as skin tissue, cartilage, tumor tissue, synovial, nerve tissue, and cardiac repair. The review closes by highlighting the challenges and prospects of microspheres/hydrogels composites.
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Affiliation(s)
- Xian Li
- Key Laboratory of Medical Cell Biology in Inner Mongolia, Clinical Medical Research Center, Affiliated Hospital of Inner Mongolia Medical University, Hohhot, Inner Mongolia 010050, China
| | - Xinlin Wu
- Department of Gastrointestinal Surgery, The Affiliated Hospital of Inner Mongolia Medical University, Hohhot 010050, Inner Mongolia Autonomous Region, China.
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6
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Lamparelli EP, Marino M, Szychlinska MA, Della Rocca N, Ciardulli MC, Scala P, D’Auria R, Testa A, Viggiano A, Cappello F, Meccariello R, Della Porta G, Santoro A. The Other Side of Plastics: Bioplastic-Based Nanoparticles for Drug Delivery Systems in the Brain. Pharmaceutics 2023; 15:2549. [PMID: 38004530 PMCID: PMC10674524 DOI: 10.3390/pharmaceutics15112549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 10/23/2023] [Accepted: 10/25/2023] [Indexed: 11/26/2023] Open
Abstract
Plastics have changed human lives, finding a broad range of applications from packaging to medical devices. However, plastics can degrade into microscopic forms known as micro- and nanoplastics, which have raised concerns about their accumulation in the environment but mainly about the potential risk to human health. Recently, biodegradable plastic materials have been introduced on the market. These polymers are biodegradable but also bioresorbable and, indeed, are fundamental tools for drug formulations, thanks to their transient ability to pass through biological barriers and concentrate in specific tissues. However, this "other side" of bioplastics raises concerns about their toxic potential, in the form of micro- and nanoparticles, due to easier and faster tissue accumulation, with unknown long-term biological effects. This review aims to provide an update on bioplastic-based particles by analyzing the advantages and drawbacks of their potential use as components of innovative formulations for brain diseases. However, a critical analysis of the literature indicates the need for further studies to assess the safety of bioplastic micro- and nanoparticles despite they appear as promising tools for several nanomedicine applications.
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Affiliation(s)
- Erwin Pavel Lamparelli
- Department of Medicine, Surgery and Dentistry, University of Salerno, 84081 Baronissi, Italy; (E.P.L.); (M.M.); (N.D.R.); (M.C.C.); (P.S.); (R.D.); (A.V.); (A.S.)
| | - Marianna Marino
- Department of Medicine, Surgery and Dentistry, University of Salerno, 84081 Baronissi, Italy; (E.P.L.); (M.M.); (N.D.R.); (M.C.C.); (P.S.); (R.D.); (A.V.); (A.S.)
| | - Marta Anna Szychlinska
- Faculty of Medicine and Surgery, Kore University of Enna, Cittadella Universitaria, 94100 Enna, Italy;
| | - Natalia Della Rocca
- Department of Medicine, Surgery and Dentistry, University of Salerno, 84081 Baronissi, Italy; (E.P.L.); (M.M.); (N.D.R.); (M.C.C.); (P.S.); (R.D.); (A.V.); (A.S.)
| | - Maria Camilla Ciardulli
- Department of Medicine, Surgery and Dentistry, University of Salerno, 84081 Baronissi, Italy; (E.P.L.); (M.M.); (N.D.R.); (M.C.C.); (P.S.); (R.D.); (A.V.); (A.S.)
| | - Pasqualina Scala
- Department of Medicine, Surgery and Dentistry, University of Salerno, 84081 Baronissi, Italy; (E.P.L.); (M.M.); (N.D.R.); (M.C.C.); (P.S.); (R.D.); (A.V.); (A.S.)
| | - Raffaella D’Auria
- Department of Medicine, Surgery and Dentistry, University of Salerno, 84081 Baronissi, Italy; (E.P.L.); (M.M.); (N.D.R.); (M.C.C.); (P.S.); (R.D.); (A.V.); (A.S.)
| | - Antonino Testa
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania “Luigi Vanvitelli”, 81100 Caserta, Italy;
| | - Andrea Viggiano
- Department of Medicine, Surgery and Dentistry, University of Salerno, 84081 Baronissi, Italy; (E.P.L.); (M.M.); (N.D.R.); (M.C.C.); (P.S.); (R.D.); (A.V.); (A.S.)
| | - Francesco Cappello
- Department of Biomedicine, Neuroscience and Advanced Diagnostics, University of Palermo, 90127 Palermo, Italy;
- Euro-Mediterranean Institute of Science and Technology (IEMEST), 90139 Palermo, Italy
| | - Rosaria Meccariello
- Department of Movement and Wellbeing Sciences, Parthenope University of Naples, 80133 Naples, Italy;
| | - Giovanna Della Porta
- Department of Medicine, Surgery and Dentistry, University of Salerno, 84081 Baronissi, Italy; (E.P.L.); (M.M.); (N.D.R.); (M.C.C.); (P.S.); (R.D.); (A.V.); (A.S.)
- Research Centre for Biomaterials BIONAM, University of Salerno, Via Giovanni Paolo II, 84084 Fisciano, Italy
| | - Antonietta Santoro
- Department of Medicine, Surgery and Dentistry, University of Salerno, 84081 Baronissi, Italy; (E.P.L.); (M.M.); (N.D.R.); (M.C.C.); (P.S.); (R.D.); (A.V.); (A.S.)
- Research Centre for Biomaterials BIONAM, University of Salerno, Via Giovanni Paolo II, 84084 Fisciano, Italy
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7
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Rahmani F, Naderpour S, Nejad BG, Rahimzadegan M, Ebrahimi ZN, Kamali H, Nosrati R. The recent insight in the release of anticancer drug loaded into PLGA microspheres. Med Oncol 2023; 40:229. [PMID: 37410278 DOI: 10.1007/s12032-023-02103-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Accepted: 06/21/2023] [Indexed: 07/07/2023]
Abstract
Cancer is a series of diseases leading to a high rate of death worldwide. Microspheres display specific characteristics that make them appropriate for a variety of biomedical purposes such as cancer therapy. Newly, microspheres have the potentials to be used as controlled drug release carriers. Recently, PLGA-based microspheres have attracted exceptional attention relating to effective drug delivery systems (DDS) because of their distinctive properties for a simple preparation, biodegradability, and high capability of drug loading which might be increased drug delivery. In this line, the mechanisms of controlled drug release and parameters that influence the release features of loaded agents from PLGA-based microspheres should be mentioned. The current review is focused on the new development of the release features of anticancer drugs, which are loaded into PLGA-based microspheres. Consequently, future perspective and challenges of anticancer drug release from PLGA-based microspheres are mentioned concisely.
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Affiliation(s)
- Farzad Rahmani
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Saghi Naderpour
- Faculty of Pharmacy, Eastern Mediterranean University, Famagusta, Cyprus
- Functional Neurosurgery Research Center, Shohada Tajrish Comprehensive Neurosurgical Center of Excellence, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Behnam Ghorbani Nejad
- Department of Toxicology and Pharmacology, Faculty of Pharmacy, Kerman University of Medical Sciences, Kerman, Iran
| | - Milad Rahimzadegan
- Functional Neurosurgery Research Center, Shohada Tajrish Comprehensive Neurosurgical Center of Excellence, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Zivar Nejad Ebrahimi
- Cellular and Molecular Research Center, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Hossein Kamali
- Targeted Drug Delivery Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran.
- Department of Pharmaceutics, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.
| | - Rahim Nosrati
- Cellular and Molecular Research Center, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran.
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Xie C, Xiong Q, Wei Y, Li X, Hu J, He M, Wei S, Yu J, Cheng S, Ahmad M, Liu Y, Luo S, Zeng X, Yu J, Luo H. Fabrication of biodegradable hollow microsphere composites made of polybutylene adipate co-terephthalate/polyvinylpyrrolidone for drug delivery and sustained release. Mater Today Bio 2023; 20:100628. [PMID: 37122839 PMCID: PMC10130625 DOI: 10.1016/j.mtbio.2023.100628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 03/18/2023] [Accepted: 04/04/2023] [Indexed: 05/02/2023] Open
Abstract
Sustained drug release has attracted increasing interest in targeted drug therapy. However, existing methods of drug therapy suffer drug action time, large fluctuations in the effective concentration of the drug, and the risk of side effects. Here, a biodegradable composite of polybutylene adipate co-terephthalate/polyvinylpyrrolidone (PBAT/PVP) consisting of electrospun hollow microspheres as sustained-released drug carriers is presented. The as-prepared PBAT/PVP composites show faster degradation rate and drug (Erlotinib) release than that of PBAT. Furthermore, PBAT/PVP composites loaded with Erlotinib provide sustained release effect, thus achieving a better efficacy than that after the direct injection of erlotinib due to the fact that the composites allow a high drug concentration in the tumor for a longer period. Hence, this work provides a potential effective solution for clinical drug therapy and tissue engineering using drug microspheres with a sustained release.
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Affiliation(s)
- Chuan Xie
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, 550014, China
- Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academy of Sciences, Guiyang, 550014, China
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang, 550025, China
| | - Qinqin Xiong
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, 550014, China
- Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academy of Sciences, Guiyang, 550014, China
| | - Yuanzhi Wei
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, 550014, China
- Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academy of Sciences, Guiyang, 550014, China
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang, 550025, China
| | - Xin Li
- Department of Polymer Material and Engineering, College of Materials and Metallurgy, Guizhou University, Guiyang, 550025, China
| | - Jiajun Hu
- Department of Polymer Material and Engineering, College of Materials and Metallurgy, Guizhou University, Guiyang, 550025, China
| | - Min He
- Department of Polymer Material and Engineering, College of Materials and Metallurgy, Guizhou University, Guiyang, 550025, China
| | - Shinan Wei
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, 550014, China
- Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academy of Sciences, Guiyang, 550014, China
| | - Jia Yu
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, 550014, China
- Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academy of Sciences, Guiyang, 550014, China
| | - Sha Cheng
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, 550014, China
- Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academy of Sciences, Guiyang, 550014, China
| | - Mashaal Ahmad
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, 550014, China
- Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academy of Sciences, Guiyang, 550014, China
| | - Yufei Liu
- Department of Polymer Material and Engineering, College of Materials and Metallurgy, Guizhou University, Guiyang, 550025, China
- National Engineering Research Center for Compounding and Modification of Polymeric Materials, Guiyang, 550014, China
- Corresponding author. Department of Polymer Material and Engineering, College of Materials and Metallurgy, Guizhou University, Guiyang, 550025, China.
| | - Sihai Luo
- Department of Chemistry, Norwegian University of Science and Technology (NTNU), 7491, Trondheim, Norway
- Corresponding author.
| | - Xi Zeng
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang, 550025, China
| | - Jie Yu
- Department of Polymer Material and Engineering, College of Materials and Metallurgy, Guizhou University, Guiyang, 550025, China
- National Engineering Research Center for Compounding and Modification of Polymeric Materials, Guiyang, 550014, China
| | - Heng Luo
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, 550014, China
- Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academy of Sciences, Guiyang, 550014, China
- Corresponding author. State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, 550014, China.
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Mihaela Raţă D, Niculina Cadinoiu A, Ionut Atanase L, Calin Mihalache G, Popa M. Design and characterization of dexamethasone phosphate -loaded microcapsules obtained by a double-emulsion method. Int J Pharm 2023; 639:122971. [PMID: 37105242 DOI: 10.1016/j.ijpharm.2023.122971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 04/12/2023] [Accepted: 04/15/2023] [Indexed: 04/29/2023]
Abstract
Polymeric microcapsules are extensively investigated as drug delivery systems for a broad range of applications. In the present study, Dexamethasone-loaded carboxylated chitosan (CCS)/poly (vinyl alcohol) (PVA)-based microcapsules were prepared in view of their potential administration by inhalation for the treatment of lung diseases. The crosslinking between PVA and CCS was activated by [4-(4,6-dimethoxy-1,3,5-triazin-2-yl)-4-methylmorpholinium chloride] (DMT-MM) and the FTIR results proved the formation of ester bonds between the two polymers. The sizes of the obtained microcapsules are influenced by the ratio between the polymers but also by the concentration of the DMT-MM activator. Moreover, the amount of PVA in the system has an important influence on swelling degree, encapsulation efficiency, drug release degree, biodegradation and protein adsorption. The sample with the highest amount of PVA has the highest crosslinking density and thus the lowest swelling degree and encapsulation efficiency. However, an encapsulation degree of 61.3% was obtained for the sample MCP-6 with the lowest PVA content. The same sample showed the lowest BSA adsorption. A controlled and sustained Dexamethasone release of around 90% was observed in PBS at pH 7.4 and 37°C during 24 h. All the obtained samples were hemocompatibles and thus can be used as efficient drug delivery systems.
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Affiliation(s)
- Delia Mihaela Raţă
- "Apollonia" University of Iasi, Pacurari Street, No. 11, 700511, Iasi, Romania
| | | | - Leonard Ionut Atanase
- "Apollonia" University of Iasi, Pacurari Street, No. 11, 700511, Iasi, Romania; Academy of Romanian Scientists, Ilfov Street, No. 3, Sector 5, 050045, Bucharest, Romania
| | | | - Marcel Popa
- "Apollonia" University of Iasi, Pacurari Street, No. 11, 700511, Iasi, Romania; Academy of Romanian Scientists, Ilfov Street, No. 3, Sector 5, 050045, Bucharest, Romania
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10
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Gautam A, Pal K. Gefitinib conjugated PEG passivated graphene quantum dots incorporated PLA microspheres for targeted anticancer drug delivery. Heliyon 2022; 8:e12512. [PMID: 36619399 PMCID: PMC9816785 DOI: 10.1016/j.heliyon.2022.e12512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 07/20/2022] [Accepted: 12/14/2022] [Indexed: 12/24/2022] Open
Abstract
In the present study, polyethylene Glycol passivated Graphene Quantum Dots (PEG-GQDs) were successfully synthesized via the hydrothermal method. Furthermore, for the synthesis of anticancer drug loaded GQD embedded microspheres, the anticancer drug was mixed with synthesized PEG-GQD. As prepared, Gefitinib-PEG-GQDs were incorporated into poly-lactic acid (PLA) microspheres using poly-vinyl-acetate (PVA) as surfactant via solvent evaporation technique and single emulsification method. The successful synthesis of anticancer drug loaded microspheres was confirmed by several characterization techniques, including Field-Emission Scanning Electron Microscopy (FE-SEM), which shows the morphology of microspheres, Fourier Transform Infrared Spectroscopy (FTIR) analysis gives an idea about functional group present in the microspheres. X-ray diffraction (XRD) provides information about the crystallinity of the samples respectively. The drug release characteristics were determined by UV-Vis spectrophotometric analysis. Moreover, the in-vitro cell-based cytotoxicity assay indicated almost insignificant cytotoxicity of the NCI-H522 cell line (Human, Lung, Non-small cell lung cancer).
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Affiliation(s)
- Abhishek Gautam
- Centre for Nanotechnology, Indian Institute of Technology Roorkee, Roorkee, 247667, India
| | - Kaushik Pal
- Centre for Nanotechnology, Indian Institute of Technology Roorkee, Roorkee, 247667, India,Department of Mechanical and Industrial Engineering, Indian Institute of Technology Roorkee, Roorkee, 247667, India,Corresponding author.
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11
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Ambrosio L, Sanchez Terrero C, Prado MO, Parodi L, Zarlenga AC, Cardoso Cúneo J. Anti-tumoral effect of doxorubicin-loaded poly(vinyl alcohol)/poly(vinyl acetate) microspheres in a rat model. IRANIAN POLYMER JOURNAL 2022. [DOI: 10.1007/s13726-022-01121-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
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12
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Progress in the application of sustained-release drug microspheres in tissue engineering. Mater Today Bio 2022; 16:100394. [PMID: 36042853 PMCID: PMC9420381 DOI: 10.1016/j.mtbio.2022.100394] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 08/05/2022] [Accepted: 08/06/2022] [Indexed: 01/22/2023]
Abstract
Sustained-release drug-loaded microspheres provide a long-acting sustained release, with targeted and other effects. There are many types of sustained-release drug microspheres and various preparation methods, and they are easy to operate. For these reasons, they have attracted widespread interest and are widely used in tissue engineering and other fields. In this paper, we provide a systematic review of the application of sustained-release drug microspheres in tissue engineering. First, we introduce this new type of drug delivery system (sustained-release drug carriers), describe the types of sustained-release drug microspheres, and summarize the characteristics of different microspheres. Second, we summarize the preparation methods of sustained-release drug microspheres and summarize the materials required for preparing microspheres. Third, various applications of sustained-release drug microspheres in tissue engineering are summarized. Finally, we summarize the shortcomings and discuss future prospects in the development of sustained-release drug microspheres. The purpose of this paper was to provide a further systematic understanding of the application of sustained-release drug microspheres in tissue engineering for the personnel engaged in related fields and to provide inspiration and new ideas for studies in related fields.
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13
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Kumar M, Kumar D, Kumar S, Kumar A, Mandal UK. A Recent Review on Bio-availability Enhancement of Poorly Water-soluble Drugs by using Bioenhancer and Nanoparticulate Drug Delivery System. Curr Pharm Des 2022; 28:3212-3224. [PMID: 36281868 DOI: 10.2174/1381612829666221021152354] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2022] [Accepted: 08/17/2022] [Indexed: 01/28/2023]
Abstract
BACKGROUND Intravenous route of drug administration has maximum bioavailability, which shows 100% of the drug reaches blood circulation, whereas the oral administration of drugs, are readily undergoing pre-systemic metabolism, which means the poor bioavailability of the drug and limited amount of drug reaches the target site. INTRODUCTION Bioenhancers are substances having medicinal entities which enhance the bioavailability and efficacy of the active constituents of drugs. The enhanced bioavailability of drugs may lead to dose reduction, which may further reduce the cost and undesired side effects associated with the drugs. METHODS The solid lipid nanoparticles (SLNs) loaded with ketoprofen made from carnauba wax and beeswax. It was discovered that when the drug-loaded SLNs were mixed with egg-lecithin and Tween-80, as well as when the total surfactant concentration was increased, the average particle size of the drug-loaded SLNs decreased. RESULTS The drug-loaded nanoparticles, when given in combination with bio-enhancers such as piperine and quercetin, enhanced the drug's effectiveness. The Area Under Curve (AUC) was increased when the drug was coupled with bio-enhancers. Based on the findings, it can be concluded that piperine and quercetin when used with drug-loaded nanoparticles improve their therapeutic effectiveness. CONCLUSION Bioenhancers are crucial to amplifying the bioavailability of many synthetic drugs. These attributes are useful to reduce the dose of drugs and increase the therapeutic efficacy of drugs with poor bioavailability.
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Affiliation(s)
- Mohit Kumar
- Department of Pharmaceutical Sciences and Technology, Maharaja Ranjit Singh Punjab Technical University (MRSPTU), Bathinda, 151001, Punjab, India
| | - Devesh Kumar
- Department of Pharmaceutical Sciences and Technology, Maharaja Ranjit Singh Punjab Technical University (MRSPTU), Bathinda, 151001, Punjab, India
| | - Sumant Kumar
- Department of Pharmaceutical Sciences and Technology, Maharaja Ranjit Singh Punjab Technical University (MRSPTU), Bathinda, 151001, Punjab, India
| | - Akshay Kumar
- Department of Pharmaceutical Sciences and Technology, Maharaja Ranjit Singh Punjab Technical University (MRSPTU), Bathinda, 151001, Punjab, India
| | - Uttam Kumar Mandal
- Department of Pharmaceutical Sciences and Technology, Maharaja Ranjit Singh Punjab Technical University (MRSPTU), Bathinda, 151001, Punjab, India
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14
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Amphiphilic copolymeric stabilizer for the formation of polycaprolactone particles. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-021-03588-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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15
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Giles MB, Hong JKY, Liu Y, Tang J, Li T, Beig A, Schwendeman A, Schwendeman SP. Efficient aqueous remote loading of peptides in poly(lactic-co-glycolic acid). Nat Commun 2022; 13:3282. [PMID: 35676271 PMCID: PMC9177552 DOI: 10.1038/s41467-022-30813-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Accepted: 05/16/2022] [Indexed: 11/29/2022] Open
Abstract
Poly(lactic-co-glycolic acid) (PLGA) long-acting release depots are effective for extending the duration of action of peptide drugs. We describe efficient organic-solvent-free remote encapsulation based on the capacity of common uncapped PLGA to bind and absorb into the polymer phase net positively charged peptides from aqueous solution after short exposure at modest temperature. Leuprolide encapsulated by this approach in low-molecular-weight PLGA 75/25 microspheres slowly and continuously released peptide for over 56 days in vitro and suppressed testosterone production in rats in an equivalent manner as the 1-month Lupron Depot®. The technique is generalizable to encapsulate a number of net cationic peptides of various size, including octreotide, with competitive loading and encapsulation efficiencies to traditional methods. In certain cases, in vitro and in vivo performance of remote-loaded PLGA microspheres exceeded that relative to marketed products. Remote absorption encapsulation further removes the need for a critical organic solvent removal step after encapsulation, allowing for simple and cost-effective sterilization of the drug-free microspheres before encapsulation of the peptide. Encapsulation of bioactive peptides in slow-release particles is complex and relies on organic solvents. Here, the authors absorb peptides in a polymer phase from water, creating a simple low-cost encapsulation process in a class of polymer depot.
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16
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Drug molecules bridge with small gatekeeper to co-block mesoporous silica nanoparticles for drug delivery. Colloids Surf B Biointerfaces 2022; 213:112350. [PMID: 35151045 DOI: 10.1016/j.colsurfb.2022.112350] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 12/16/2021] [Accepted: 01/18/2022] [Indexed: 01/15/2023]
Abstract
In this study, a filter-like blocking system based on MSN with small gatekeeper 5- mercapto-2 nitrobenzoic acid (MNBA) has developed. The MNBA grafted nanoparticle MSN-SS-MNBA shows excellent blocking performance with negligible leakage when loaded with doxorubicin (DOX), and the release profiles illustrate stimuli-responsive property when triggered by GSH. Viability experiments indicate that MSN-SS-MNBA has obvious inhibition for both Hela cells and HCT116 cells, while showing good biocompatibility for L929 cells, which suggests that the modified MNBA has a synergistic effect on cancer cells-killing. Since the small grafted molecule MNBA cannot block the channels of MSN via self-assembly, a filter-like blocking model that the loaded drug bridged with modified MNBA to fulfill the blocking process is proposed. The novel blocking strategy provides a new possible way for pore blocking, and the small nanovalve can be used as synergistic molecule for cancer therapy.
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17
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Journey to the Market: The Evolution of Biodegradable Drug Delivery Systems. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12020935] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Biodegradable polymers have been used as carriers in drug delivery systems for more than four decades. Early work used crude natural materials for particle fabrication, whereas more recent work has utilized synthetic polymers. Applications include the macroscale, the microscale, and the nanoscale. Since pioneering work in the 1960’s, an array of products that use biodegradable polymers to encapsulate the desired drug payload have been approved for human use by international regulatory agencies. The commercial success of these products has led to further research in the field aimed at bringing forward new formulation types for improved delivery of various small molecule and biologic drugs. Here, we review recent advances in the development of these materials and we provide insight on their drug delivery application. We also address payload encapsulation and drug release mechanisms from biodegradable formulations and their application in approved therapeutic products.
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Yuan Y, He N, Dong L, Guo Q, Zhang X, Li B, Li L. Multiscale Shellac-Based Delivery Systems: From Macro- to Nanoscale. ACS NANO 2021; 15:18794-18821. [PMID: 34806863 DOI: 10.1021/acsnano.1c07121] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Delivery systems play a crucial role in enhancing the activity of active substances; however, they require complex processing techniques and raw material design to achieve the desired properties. In this regard, raw materials that can be easily processed for different delivery systems are garnering attention. Among these raw materials, shellac, which is the only pharmaceutically used resin of animal origin, has been widely used in the development of various delivery systems owing to its pH responsiveness, biocompatibility, and degradability. Notably, shellac performs better on encapsulating hydrophobic active substances than other natural polymers, such as polysaccharides and proteins. In addition, specially designed shellac-based delivery systems can also be used for the codelivery of hydrophilic and hydrophobic active substances. Shellac is most widely used for oral administration, as shellac-based delivery systems can form a compact structure through hydrophobic interaction, protecting transported active substances from the harsh environment of the stomach to achieve targeted delivery in the small intestine or colon. In this review, the advantages of shellac in delivery systems are discussed in detail. Multiscale shellac-based delivery systems from the macroscale to nanoscale are comprehensively introduced, including matrix tablets, films, enteric coatings, hydrogels, microcapsules, microparticles (beads/spheres), nanoparticles, and nanofibers. Furthermore, the hotspots, deficiencies, and future perspectives of shellac-based delivery system development are also analyzed. We hoped this review will increase the understanding of shellac-based delivery systems and inspire their further development.
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Affiliation(s)
- Yi Yuan
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
- Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, South China University of Technology, Guangzhou 510640, China
- Engineering Research Center of Starch and Plant Protein Deep Processing, Ministry of Education, South China University of Technology, Guangzhou 510640, China
| | - Ni He
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
- Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, South China University of Technology, Guangzhou 510640, China
- Engineering Research Center of Starch and Plant Protein Deep Processing, Ministry of Education, South China University of Technology, Guangzhou 510640, China
| | - Liya Dong
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
- Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, South China University of Technology, Guangzhou 510640, China
- Engineering Research Center of Starch and Plant Protein Deep Processing, Ministry of Education, South China University of Technology, Guangzhou 510640, China
| | - Qiyong Guo
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
- Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, South China University of Technology, Guangzhou 510640, China
- Engineering Research Center of Starch and Plant Protein Deep Processing, Ministry of Education, South China University of Technology, Guangzhou 510640, China
| | - Xia Zhang
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
- Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, South China University of Technology, Guangzhou 510640, China
- Engineering Research Center of Starch and Plant Protein Deep Processing, Ministry of Education, South China University of Technology, Guangzhou 510640, China
| | - Bing Li
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
- Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, South China University of Technology, Guangzhou 510640, China
- Engineering Research Center of Starch and Plant Protein Deep Processing, Ministry of Education, South China University of Technology, Guangzhou 510640, China
| | - Lin Li
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
- Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, South China University of Technology, Guangzhou 510640, China
- Engineering Research Center of Starch and Plant Protein Deep Processing, Ministry of Education, South China University of Technology, Guangzhou 510640, China
- School of Chemical Engineering and Energy Technology, Dongguan University of Technology, Dongguan 523808, China
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Sheth S, Stealey S, Morgan NY, Zustiak SP. Microfluidic Chip Device for In Situ Mixing and Fabrication of Hydrogel Microspheres via Michael-Type Addition. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:11793-11803. [PMID: 34597052 PMCID: PMC9447845 DOI: 10.1021/acs.langmuir.1c01739] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Hydrogel microspheres are sought for a variety of biomedical applications, including therapeutic and cellular delivery, sensors, and lubricants. Robust fabrication of hydrogel microspheres with uniform sizes and properties can be achieved using microfluidic systems that rely on droplet formation and subsequent gelation to form microspheres. Such systems work well when gelation is initiated after droplet formation but are not practical for timed gelation systems where gelation is initiated prior to droplet formation; premature gelation can lead to device blockage, variable microsphere diameter due to viscosity changes in the precursor solution, and limited numbers of microspheres produced in a single run. To enable microfluidic fabrication of microspheres from timed gelation hydrogel systems, an in situ mixing region is needed so that various hydrogel precursor components can be added separately. Here, we designed and evaluated three mixing devices for their effectiveness at mixing hydrogel precursor solutions prior to droplet formation and subsequent gelation. The serpentine geometry was found to be the most effective and was further improved with the inclusion of a pillar array to increase agitation. The optimized device was shown to fully mix precursor solutions and enable the fabrication of monodisperse polyethylene glycol microspheres, offering great potential for use with timed gelation hydrogel systems.
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Affiliation(s)
- Saahil Sheth
- Department of Biomedical Engineering, Saint Louis University, St. Louis, MO, USA 63103
| | - Samuel Stealey
- Department of Biomedical Engineering, Saint Louis University, St. Louis, MO, USA 63103
| | - Nicole Y. Morgan
- Biomedical Engineering and Physical Science Shared Resource, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda, Maryland, USA 20814
| | - Silviya P. Zustiak
- Department of Biomedical Engineering, Saint Louis University, St. Louis, MO, USA 63103
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Sustained-Release Microspheres of Rivoceranib for the Treatment of Subfoveal Choroidal Neovascularization. Pharmaceutics 2021; 13:pharmaceutics13101548. [PMID: 34683841 PMCID: PMC8538988 DOI: 10.3390/pharmaceutics13101548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 09/16/2021] [Accepted: 09/19/2021] [Indexed: 11/17/2022] Open
Abstract
The wet type of age-related macular degeneration (AMD) accompanies the subfoveal choroidal neovascularization (CNV) caused by the abnormal extension or remodeling of blood vessels to the macula and retinal pigment epithelium (RPE). Vascular endothelial growth factor (VEGF) is known to play a crucial role in the pathogenesis of the disease. In this study, we tried to repurpose an investigational anticancer drug, rivoceranib, which is a selective inhibitor of VEGF receptor-2 (VEGFR2), and evaluate the therapeutic potential of the drug for the treatment of wet-type AMD in a laser-induced CNV mouse model using microsphere-based sustained drug release formulations. The PLGA-based rivoceranib microsphere can carry out a sustained delivery of rivoceranib for 50 days. When administered intravitreally, the sustained microsphere formulation of rivoceranib effectively inhibited the formation of subfoveal neovascular lesions in mice.
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21
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Narayana S, Ahmed MG, Gowda BHJ, Shetty PK, Nasrine A, Thriveni M, Noushida N, Sanjana A. Recent advances in ocular drug delivery systems and targeting VEGF receptors for management of ocular angiogenesis: A comprehensive review. FUTURE JOURNAL OF PHARMACEUTICAL SCIENCES 2021. [DOI: 10.1186/s43094-021-00331-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Abstract
Background
Angiogenic ocular diseases address the main source of vision impairment or irreversible vision loss. The angiogenesis process depends on the balance between the pro-angiogenic and anti-angiogenic factors. An imbalance between these factors leads to pathological conditions in the body. The vascular endothelial growth factor is the main cause of pathological conditions in the ocular region. Intravitreal injections of anti-angiogenic drugs are selective, safe, specific and revolutionized treatment for ocular angiogenesis. But intravitreal injections are invasive techniques with other severe complications. The area of targeting vascular endothelial growth factor receptors progresses with novel approaches and therapeutically based hope for best clinical outcomes for patients through the developments in anti-angiogenic therapy.
Main text
The present review article gathers prior knowledge about the vascular endothelial growth factor and associated receptors with other angiogenic and anti-angiogenic factors involved in ocular angiogenesis. A focus on the brief mechanism of vascular endothelial growth factor inhibitors in the treatment of ocular angiogenesis is elaborated. The review also covers various recent novel approaches available for ocular drug delivery by comprising a substantial amount of research works. Besides this, we have also discussed in detail the adoption of nanotechnology-based drug delivery systems in ocular angiogenesis by comprising literature having recent advancements. The clinical applications of nanotechnology in terms of ocular drug delivery, risk analysis and future perspectives relating to the treatment approaches for ocular angiogenesis have also been presented.
Conclusion
The novel ocular drug delivery systems involving nanotechnologies are of great importance in the ophthalmological sector to overcome traditional treatments with many drawbacks. This article gives a detailed insight into the various approaches that are currently available to be a road map for future research in the field of ocular angiogenesis disease management.
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22
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Recent Advances and Challenges in Nanodelivery Systems for Antimicrobial Peptides (AMPs). Antibiotics (Basel) 2021; 10:antibiotics10080990. [PMID: 34439040 PMCID: PMC8388958 DOI: 10.3390/antibiotics10080990] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 08/10/2021] [Accepted: 08/14/2021] [Indexed: 02/07/2023] Open
Abstract
Antimicrobial peptides (AMPs) can be used as alternative therapeutic agents to traditional antibiotics. These peptides have abundant natural template sources and can be isolated from animals, plants, and microorganisms. They are amphiphilic and mostly net positively charged, and they have a broad-spectrum inhibitory effect on bacteria, fungi, and viruses. AMPs possess significant rapid killing effects and do not interact with specific receptors on bacterial surfaces. As a result, drug resistance is rarely observed with treatments. AMPs, however, have some operational problems, such as a susceptibility to enzymatic (protease) degradation, toxicity in vivo, and unclear pharmacokinetics. However, nanodelivery systems loaded with AMPs provide a safe mechanism of packaging such peptides before they exert their antimicrobial actions, facilitate targeted delivery to the sites of infection, and control the release rate of peptides and reduce their toxic side effects. However, nanodelivery systems using AMPs are at an early stage of development and are still in the laboratory phase of development. There are also some challenges in incorporating AMPs into nanodelivery systems. Herein, an insight into the nanotechnology challenges in delivering AMPs, current advances, and remaining technological challenges are discussed in depth.
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Wu B, Wu L, He Y, Yin Z, Deng L. Engineered PLGA microspheres for extended release of brexpiprazole: in vitro and in vivo studies. Drug Dev Ind Pharm 2021; 47:1001-1010. [PMID: 34032181 DOI: 10.1080/03639045.2021.1934859] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
OBJECTIVE To develop poly(d,l-lactide-co-glycolide) (PLGA) microspheres to achieve controlled and sustained release of brexpiprazole in vivo. METHODS Brexpiprazole microspheres were prepared by oil-in-water emulsion-solvent evaporation method and evaluated for morphology, particle size, encapsulation efficiency, drug loading, conformation and compatibility of drug and polymer, in vitro release, and in vivo pharmacokinetics. By establishing the relationship between in vitro and in vivo release, it helps identify the appropriate in vitro release conditions to explore release profiles of brexpiprazole microspheres. RESULTS Porous PLGA microspheres with near spherical morphology were obtained displaying an average diameter of 20.43 ± 0.06 μm, a drug loading capacity of 27.24 ± 0.33% and an encapsulation efficiency of 81.87 ± 1.07%. Fourier transform infrared spectroscopy (FTIR), powder X-ray diffraction (PXRD), and differential scanning calorimetry (DSC) analysis showed that some drugs encapsulated in the microspheres remained in the amorphous state and some were in the crystalline state. Different release setups resulted in different release kinetics. The dialysis release setup displayed a cumulative release of about 65% within 60 days, while the sample-and-separate setup showed a cumulative release of about 77% within 35 days. Per pharmacokinetic studies in rats, a burst phase in the plasma concentration-time curve was observed after intramuscular injection in the first 2 h followed by a clear zero-order release phase. Overall, brexpiprazole achieved in vivo sustained release from PLGA microspheres for up to 40 days. CONCLUSION A PLGA microsphere loaded with brexpiprazole was successfully developed and demonstrated potential for extended-release of therapeutics for schizophrenia treatment.
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Affiliation(s)
- Bangqing Wu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, China
| | - Lijun Wu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, China
| | - Yingju He
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, China
| | - Zongning Yin
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, China
| | - Li Deng
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, China
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Su Y, Zhang B, Sun R, Liu W, Zhu Q, Zhang X, Wang R, Chen C. PLGA-based biodegradable microspheres in drug delivery: recent advances in research and application. Drug Deliv 2021; 28:1397-1418. [PMID: 34184949 PMCID: PMC8248937 DOI: 10.1080/10717544.2021.1938756] [Citation(s) in RCA: 159] [Impact Index Per Article: 53.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Biodegradable microspheres have been widely used in the field of medicine due to their ability to deliver drug molecules of various properties through multiple pathways and their advantages of low dose and low side effects. Poly (lactic-co-glycolic acid) copolymer (PLGA) is one of the most widely used biodegradable material currently and has good biocompatibility. In application, PLGA with a specific monomer ratio (lactic acid and glycolic acid) can be selected according to the properties of drug molecules and the requirements of the drug release rate. PLGA-based biodegradable microspheres have been studied in the field of drug delivery, including the delivery of various anticancer drugs, protein or peptide drugs, bacterial or viral DNA, etc. This review describes the basic knowledge and current situation of PLGA biodegradable microspheres and discusses the selection of PLGA polymer materials. Then, the preparation methods of PLGA microspheres are introduced, including emulsification, microfluidic technology, electrospray, and spray drying. Finally, this review summarizes the application of PLGA microspheres in drug delivery and the treatment of pulmonary and ocular-related diseases.
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Affiliation(s)
- Yue Su
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, China
| | - Bolun Zhang
- Hunan Zaochen Nanorobot Co., Ltd, Liuyang, China
| | - Ruowei Sun
- Hunan Zaochen Nanorobot Co., Ltd, Liuyang, China
| | - Wenfang Liu
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, China
| | - Qubo Zhu
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, China
| | - Xun Zhang
- Hunan Zaochen Nanorobot Co., Ltd, Liuyang, China
| | | | - Chuanpin Chen
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, China
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Cheng L, Cai Z, Zhao J, Wang F, Lu M, Deng L, Cui W. Black phosphorus-based 2D materials for bone therapy. Bioact Mater 2020; 5:1026-1043. [PMID: 32695934 PMCID: PMC7355388 DOI: 10.1016/j.bioactmat.2020.06.007] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 05/22/2020] [Accepted: 06/08/2020] [Indexed: 02/08/2023] Open
Abstract
Since their discovery, Black Phosphorus (BP)-based nanomaterials have received extensive attentions in the fields of electromechanics, optics and biomedicine, due to their remarkable properties and excellent biocompatibility. The most essential feature of BP is that it is composed of a single phosphorus element, which has a high degree of homology with the inorganic components of natural bone, therefore it has a full advantage in the treatment of bone defects. This review will first introduce the source, physicochemical properties, and degradation products of BP, then introduce the remodeling process of bone, and comprehensively summarize the progress of BP-based materials for bone therapy in the form of hydrogels, polymer membranes, microspheres, and three-dimensional (3D) printed scaffolds. Finally, we discuss the challenges and prospects of BP-based implant materials in bone immune regulation and outlook the future clinical application.
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Affiliation(s)
- Liang Cheng
- Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases, Shanghai Institute of Traumatology and Orthopaedics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, PR China
| | - Zhengwei Cai
- Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases, Shanghai Institute of Traumatology and Orthopaedics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, PR China
- Jiaxing Key Laboratory of Basic Research and Clinical Translation on Orthopedic Biomaterials, Department of Orthopaedics, The Second Affiliated Hospital of Jiaxing University, 1518 North Huancheng Road, Jiaxing 314000, PR China
| | - Jingwen Zhao
- Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases, Shanghai Institute of Traumatology and Orthopaedics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, PR China
| | - Fei Wang
- Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases, Shanghai Institute of Traumatology and Orthopaedics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, PR China
| | - Min Lu
- Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases, Shanghai Institute of Traumatology and Orthopaedics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, PR China
| | - Lianfu Deng
- Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases, Shanghai Institute of Traumatology and Orthopaedics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, PR China
| | - Wenguo Cui
- Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases, Shanghai Institute of Traumatology and Orthopaedics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, PR China
- Jiaxing Key Laboratory of Basic Research and Clinical Translation on Orthopedic Biomaterials, Department of Orthopaedics, The Second Affiliated Hospital of Jiaxing University, 1518 North Huancheng Road, Jiaxing 314000, PR China
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Zheng Y, Sheng F, Wang Z, Yang G, Li C, Wang H, Song Z. Shear Speed-Regulated Properties of Long-Acting Docetaxel Control Release Poly (Lactic- Co-Glycolic Acid) Microspheres. Front Pharmacol 2020; 11:1286. [PMID: 32973517 PMCID: PMC7468411 DOI: 10.3389/fphar.2020.01286] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2020] [Accepted: 08/03/2020] [Indexed: 12/31/2022] Open
Abstract
Advanced drug carriers for the controlled release of chemotherapeutics in the treatment of malignant tumors have drawn significant notice in recent years. In the current study, microspheres (MPs) loaded with docetaxel (DTX) were prepared using polylactic-co-glycolic acid copolymer (PLGA). The double emulsion solvent evaporation method is simple to perform, and results in high encapsulation efficiency. Electron micrographs of the MPs showed that controlling the shear rate can effectively control the size of the MPs. At present, most DTX sustained-release carriers cannot maintain stable and long-term local drug release. The 1.68 μm DTX-loaded microspheres (MP/DTX) with elastase was completely degraded in 14 d. This controlled degradation period is similar to a course of treatment for most cancers. The drug release profile of all kinds of MP/DTX demonstrated an initial rapid release, then slower and stable release to the end. The current study demonstrates that it is possible to create drug-loaded MPs with specific degradation times and drug release curves, which may be useful in achieving optimal treatment times and drug release rates for different diseases, and different drug delivery routes. The initial burst release reaches the effective concentration of the drug at the beginning of release, and then the drug concentration is maintained by stable release to reduce the number of injections and improve patient compliance.
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Affiliation(s)
- Yuhao Zheng
- Department of Sports Medicine, First Hospital of Jilin University, Changchun, China
| | - Fan Sheng
- Klebs Research Center, Department of Dermatology, Yanbian University Hospital, Yanji, China
| | - Zihang Wang
- Department of Traumatology, First Hospital of Jilin University, Changchun, China
| | - Guang Yang
- Department of Traumatology, First Hospital of Jilin University, Changchun, China
| | - Chenguang Li
- Department of Colorectal and Anal Surgery, First Hospital of Jilin University, Changchun, China
| | - He Wang
- Department of Anesthesia, Yanbian University Hospital, Yanji, China
| | - Zhiming Song
- Department of Sports Medicine, First Hospital of Jilin University, Changchun, China
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27
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Synthesis and characterization of curcumin loaded alginate microspheres for drug delivery. J Drug Deliv Sci Technol 2020. [DOI: 10.1016/j.jddst.2020.101796] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Brauner B, Semmler J, Rauch D, Nokaj M, Haiss P, Schwarz P, Wirth M, Gabor F. Trimethoprim-Loaded PLGA Nanoparticles Grafted with WGA as Potential Intravesical Therapy of Urinary Tract Infections-Studies on Adhesion to SV-HUCs Under Varying Time, pH, and Drug-Loading Conditions. ACS OMEGA 2020; 5:17377-17384. [PMID: 32715222 PMCID: PMC7377071 DOI: 10.1021/acsomega.0c01745] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Accepted: 06/24/2020] [Indexed: 06/11/2023]
Abstract
Intravesical therapy, already used to treat bladder cancer, is a potential treatment option for urinary tract infections. However, short dwelling time and washout proved to be challenging obstacles. To circumvent these issues, PLGA 503H and PLGA 2300 nanoparticles were prepared and surface modified with wheat germ agglutinin (WGA). Nanoparticles of both poly(d,l-lactic-co-glycolic acid) (PLGA) types exhibited high inherent adhesion to human uroepithelial cells. Although surface-bound WGA could be easily increased, adhesion did not. Loading the nanoparticles with trimethoprim did not counteract cell adhesion. Varying the medium for instillation revealed highest adhesion in sodium bicarbonate buffer (pH 5). To evaluate dwelling time, nanoparticles were incubated with the cell monolayer for increasing time intervals. A contact time of 15 min seems to be too short for adhesion to the cells as less than 50% particles remained bound after washing. However, after 30 min 70% of the particles added were bound, and afterward, no further increase was observed. WGA only slightly increased the adhesion of the PLGA nanoparticles, but this approach might not be economically viable. However, PLGA nanoparticles displayed a high inherent adhesion to cells that might substantially foster intravesical therapy.
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Affiliation(s)
- Bernhard Brauner
- Department of Pharmaceutical Technology and Biopharmaceutics, University of Vienna, Althanstraße 14, 1090 Vienna, Austria
| | - Johanna Semmler
- Department of Pharmaceutical Technology and Biopharmaceutics, University of Vienna, Althanstraße 14, 1090 Vienna, Austria
| | - Desireé Rauch
- Department of Pharmaceutical Technology and Biopharmaceutics, University of Vienna, Althanstraße 14, 1090 Vienna, Austria
| | - Melinda Nokaj
- Department of Pharmaceutical Technology and Biopharmaceutics, University of Vienna, Althanstraße 14, 1090 Vienna, Austria
| | - Patricia Haiss
- Department of Pharmaceutical Technology and Biopharmaceutics, University of Vienna, Althanstraße 14, 1090 Vienna, Austria
| | - Patrik Schwarz
- Department of Pharmaceutical Technology and Biopharmaceutics, University of Vienna, Althanstraße 14, 1090 Vienna, Austria
| | - Michael Wirth
- Department of Pharmaceutical Technology and Biopharmaceutics, University of Vienna, Althanstraße 14, 1090 Vienna, Austria
| | - Franz Gabor
- Department of Pharmaceutical Technology and Biopharmaceutics, University of Vienna, Althanstraße 14, 1090 Vienna, Austria
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Lewis AL, Caine M, Garcia P, Ashrafi K, Tang Y, Hinchcliffe L, Guo W, Bascal Z, Kilpatrick H, Willis SL. Handling and performance characteristics of a new small caliber radiopaque embolic microsphere. J Biomed Mater Res B Appl Biomater 2020; 108:2878-2888. [PMID: 32578348 PMCID: PMC7496950 DOI: 10.1002/jbm.b.34619] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2019] [Revised: 03/19/2020] [Accepted: 04/13/2020] [Indexed: 12/24/2022]
Abstract
The in vitro and in vivo handling and performance characteristics of a small caliber radiopaque embolic microsphere, 40–90 μm DC Bead LUMI™ (LUMI40‐90), were studied. Microsphere drug loading and elution and effects on size, suspension, and microcatheter delivery were evaluated using established in vitro methodologies. In vivo evaluations of vascular penetration (rabbit renal artery embolization), long‐term biocompatibility and X‐ray imaging properties, pharmacokinetics and local tissue effects of both doxorubicin (Dox) and irinotecan (Iri) loaded microspheres (swine hepatic artery embolization) were conducted. Compared to 70–150 μm DC Bead LUMI (LUMI70‐150), LUMI40‐90 averaged 70 μm versus 100 μm, which was unchanged upon drug loading. Handling, suspension, and microsphere delivery studies were successfully performed. Dox loading was faster (20 min) and Iri equivalent (<10 min) while drug elution rates were similar. Contrast suspension times were longer with no delivery complications. Vascular penetration was statistically greater (rabbit) with no unexpected adverse safety findings (swine). Microspheres ± drug were visible under X‐ray imaging (CT) at 90 days. Peak plasma drug levels and area under the curve were greater for LUMI40‐90 compared to LUMI70‐150 but comparable to 70–150 μm DC BeadM1™ (DC70‐150). Local tissue effects showed extensive hepatic necrosis for Dox, whereas Iri displayed lower toxicity with more pronounced lobar fibrosis. LUMI40‐90 remains suspended for longer and have greater vessel penetration compared to the other DC Bead LUMI sizes and are similarly highly biocompatible with long‐term visibility under X‐ray imaging. Drug loading is equivalent or faster with pharmacokinetics similar to DC70‐150 for both Dox and Iri.
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Affiliation(s)
- Andrew L Lewis
- Biocompatibles UK Ltd., a BTG International Group Company, Camberley, Surrey, UK
| | - Marcus Caine
- Biocompatibles UK Ltd., a BTG International Group Company, Camberley, Surrey, UK
| | - Pedro Garcia
- Biocompatibles UK Ltd., a BTG International Group Company, Camberley, Surrey, UK
| | - Koorosh Ashrafi
- Biocompatibles UK Ltd., a BTG International Group Company, Camberley, Surrey, UK
| | - Yiqing Tang
- Biocompatibles UK Ltd., a BTG International Group Company, Camberley, Surrey, UK
| | - Lorcan Hinchcliffe
- Biocompatibles UK Ltd., a BTG International Group Company, Camberley, Surrey, UK
| | - Wei Guo
- Biocompatibles UK Ltd., a BTG International Group Company, Camberley, Surrey, UK
| | - Zainab Bascal
- Biocompatibles UK Ltd., a BTG International Group Company, Camberley, Surrey, UK
| | - Hugh Kilpatrick
- Biocompatibles UK Ltd., a BTG International Group Company, Camberley, Surrey, UK
| | - Sean L Willis
- Biocompatibles UK Ltd., a BTG International Group Company, Camberley, Surrey, UK
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Brauner B, Schuster C, Wirth M, Gabor F. Trimethoprim-Loaded Microspheres Prepared from Low-Molecular-Weight PLGA as a Potential Drug Delivery System for the Treatment of Urinary Tract Infections. ACS OMEGA 2020; 5:9013-9022. [PMID: 32337466 PMCID: PMC7178804 DOI: 10.1021/acsomega.0c00981] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Accepted: 03/18/2020] [Indexed: 05/09/2023]
Abstract
Commonly, therapy of urinary tract infections suffers from increasing resistance to antibiotics and the ability of uropathogenic Escherichia coli (UPEC) to invade bladder cells and cause recurring infections. As an alternative strategy for instillation into the bladder, trimethoprim-loaded microparticles with poly(d,l-lactic-co-glycolic acid) (PLGA) as a matrix were prepared. To reduce particle loss by washout, their surface was grafted with bioadhesive wheat germ agglutinin, providing biomimicry akin to UPEC. Since PLGA 503H has shown a slow drug release profile, the low-molecular-weight PLGA 2300 was studied. Whereas the drug loading of PLGA 503H particles amounted to 2.8%, the drug content of PLGA 2300 particles was twice as high. Although the drug release pattern started with an initial burst of 30% after 24 h for both PLGA types, half of the trimethoprim content was released after 4 days from PLGA 503H microparticles as opposed to 2 days in the case of PLGA 2300. Higher drug loading and accelerated release render PLGA 2300 a viable alternative to PLGA 503H.
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Affiliation(s)
| | | | | | - Franz Gabor
- . Tel: +43-1-4277-55406. Fax: +43-1-4277-855406
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Mura P. Advantages of the combined use of cyclodextrins and nanocarriers in drug delivery: A review. Int J Pharm 2020; 579:119181. [PMID: 32112928 DOI: 10.1016/j.ijpharm.2020.119181] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2019] [Revised: 02/24/2020] [Accepted: 02/25/2020] [Indexed: 01/09/2023]
Abstract
Complexation with cyclodextrins (CDs) has been widely and successfully used in pharmaceutical field, mainly for enhancing solubility, stability and bioavailability of a variety of drugs. However, some important drawbacks, including rapid removal from the bloodstream after in vivo administration, or possible replacement, in biological media, of the entrapped drug moieties by other molecules with higher affinity for the CD cavity, can limit the CDs effectiveness as drug carriers. This review is focused on combined strategies simultaneously exploiting CD complexation, and loading of the complexed drug into various colloidal carriers (liposomes, niosomes, polymeric nanoparticles, lipid nanoparticles, nanoemulsions, micelles) which have been investigated as a possible means for circumventing the problems associated with both such carriers, when used separately, and join their relative benefits in a unique delivery system. Several examples of applications have been reported, to illustrate the possible advantages achievable by such a dual strategy, depending on the CD-nanocarrier combination, and mainly resulting in enhanced performance of the delivery system and improved biopharmaceutical properties and therapeutic efficacy of drugs. The major problems and/or drawbacks found in the development of such systems, as well as the (rare) case of failures in achieving the expected improvements have also been highlighted.
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Affiliation(s)
- Paola Mura
- Department of Chemistry, Florence University, via Schiff 6, Sesto Fiorentino, Florence, Italy.
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Brauner B, Schwarz P, Wirth M, Gabor F. Micro vs. nano: PLGA particles loaded with trimethoprim for instillative treatment of urinary tract infections. Int J Pharm 2020; 579:119158. [PMID: 32081799 DOI: 10.1016/j.ijpharm.2020.119158] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Revised: 02/11/2020] [Accepted: 02/16/2020] [Indexed: 01/06/2023]
Abstract
Recurring infections and increasing resistances continue to complicate treatment of urinary tract infections. To investigate alternative treatment options, trimethoprim loaded micro- (D[4;3] of 1-9 µm) and nanoparticles (Z-Avg of 200-400 nm) were prepared from two types of poly(d,l-lactic-co-glycolic acid) (PLGA) for instillative therapy. While PLGA 503H microparticles could not be loaded with more than 2.6% trimethoprim, PLGA 2300 entrapped 22%. When preparing nanoparticles, both types displayed an even higher drug load of up to 29% using PLGA 2300, while PLGA 503H drug load stagnated at 10%. After eight hours, drug release from microparticles amounted to 55% (503H) and 35% (2300) whereas total drug release occurred after 8 (503H) and 9 days (2300). In case of nanoparticles, trimethoprim was liberated much faster with 60% after 2 h and a complete release after 24 h from both polymers. PLGA 2300 seems to be the better choice for entrapment of trimethoprim in microparticles considering the drug load. Both polymers, however, seem to be viable options for nanoparticles. Due to the higher overall drug load, nanoparticles seem to be advantageous over microparticles for instillative therapy, especially when prepared with PLGA 2300.
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Affiliation(s)
- Bernhard Brauner
- Department of Pharmaceutical Technology and Biopharmaceutics, University of Vienna, Althanstraße 14, 1090 Vienna, Austria
| | - Patrik Schwarz
- Department of Pharmaceutical Technology and Biopharmaceutics, University of Vienna, Althanstraße 14, 1090 Vienna, Austria
| | - Michael Wirth
- Department of Pharmaceutical Technology and Biopharmaceutics, University of Vienna, Althanstraße 14, 1090 Vienna, Austria
| | - Franz Gabor
- Department of Pharmaceutical Technology and Biopharmaceutics, University of Vienna, Althanstraße 14, 1090 Vienna, Austria.
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Abstract
Glaucoma is the second leading cause of blindness worldwide. Even though significant advances have been made in its management, currently available antiglaucoma therapies suffer from considerable drawbacks. Typically, the success and efficacy of glaucoma medications are undermined by their limited bioavailability to target tissues and the inadequate adherence demonstrated by patients with glaucoma. The latter is due to a gradual decrease in tolerability of lifelong topical therapies and the significant burden to patients of prescribed stepwise antiglaucoma regimens with frequent dosing which impact quality of life. On the other hand, glaucoma surgery is restricted by the inability of antifibrotic agents to efficiently control the wound healing process without causing severe collateral damage and long-term complications. Evolution of the treatment paradigm for patients with glaucoma will ideally include prevention of retinal ganglion cell degeneration by the successful delivery of neurotrophic factors, anti-inflammatory drugs, and gene therapies. Nanotechnology-based treatments may surpass the limitations of currently available glaucoma therapies through optimized targeted drug delivery, increased bioavailability, and controlled release. This review addresses the recent advances in glaucoma treatment strategies employing nanotechnology, including medical and surgical management, neuroregeneration, and neuroprotection.
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34
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Tang Y, Scher HB, Jeoh T. Industrially scalable complex coacervation process to microencapsulate food ingredients. INNOV FOOD SCI EMERG 2020. [DOI: 10.1016/j.ifset.2019.102257] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Abstract
Microparticles, microspheres, and microcapsules are widely used constituents of multiparticulate drug delivery systems, offering both therapeutic and technological advantages. Microparticles are generally in the 1–1000 µm size range, serve as multiunit drug delivery systems with well-defined physiological and pharmacokinetic benefits in order to improve the effectiveness, tolerability, and patient compliance. This paper reviews their evolution, significance, and formulation factors (excipients and procedures), as well as their most important practical applications (inhaled insulin, liposomal preparations). The article presents the most important structures of microparticles (microspheres, microcapsules, coated pellets, etc.), interpreted with microscopic images too. The most significant production processes (spray drying, extrusion, coacervation, freeze-drying, microfluidics), the drug release mechanisms, and the commonly used excipients, the characterization, and the novel drug delivery systems (microbubbles, microsponges), as well as the preparations used in therapy are discussed in detail.
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Cárdenas PA, Jiménez – Kairuz Á, Verlindo de Araujo B, Aragón DM. Development of a dissolution method based on lipase for preclinical level A IVIVC of oral poly(ε-caprolactone) microspheres. J Drug Deliv Sci Technol 2019. [DOI: 10.1016/j.jddst.2019.05.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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37
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Scheiner K, Maas-Bakker RF, Nguyen TT, Duarte AM, Hendriks G, Sequeira L, Duffy GP, Steendam R, Hennink WE, Kok RJ. Sustained Release of Vascular Endothelial Growth Factor from Poly(ε-caprolactone-PEG-ε-caprolactone)- b-Poly(l-lactide) Multiblock Copolymer Microspheres. ACS OMEGA 2019; 4:11481-11492. [PMID: 31460253 PMCID: PMC6681988 DOI: 10.1021/acsomega.9b01272] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Accepted: 06/18/2019] [Indexed: 05/14/2023]
Abstract
Vascular endothelial growth factor (VEGF) is the major regulating factor for the formation of new blood vessels, also known as angiogenesis. VEGF is often incorporated in synthetic scaffolds to promote vascularization and to enhance the survival of cells that have been seeded in these devices. Such applications require sustained local delivery of VEGF of around 4 weeks for stable blood vessel formation. Most delivery systems for VEGF only provide short-term release for a couple of days, followed by a release phase with very low VEGF release. We now have developed VEGF-loaded polymeric microspheres that provide sustained release of bioactive VEGF for 4 weeks. Blends of two swellable poly(ε-caprolactone)-poly(ethylene glycol)-poly(ε-caprolactone)-b-poly(l-lactide) ([PCL-PEG-PCL]-b-[PLLA])-based multiblock copolymers with different PEG content and PEG molecular weight were used to prepare the microspheres. Loading of the microspheres was established by a solvent evaporation-based membrane emulsification method. The resulting VEGF-loaded microspheres had average sizes of 40-50 μm and a narrow size distribution. Optimized formulations of a 50:50 blend of the two multiblock copolymers had an average VEGF loading of 0.79 ± 0.09%, representing a high average VEGF loading efficiency of 78 ± 16%. These microspheres released VEGF continuously over 4 weeks in phosphate-buffered saline pH 7.4 at 37 °C. This release profile was preserved after repeated and long-term storage at -20 °C for up to 9 months, thereby demonstrating excellent storage stability. VEGF release was governed by diffusion through the water-filled polymer matrix, depending on PEG molecular weight and PEG content of the polymers. The bioactivity of the released VEGF was retained within the experimental error in the 4-week release window, as demonstrated using a human umbilical vein endothelial cells proliferation assay. Thus, the microspheres prepared in this study are suitable for embedment in polymeric scaffolds with the aim of promoting their functional vascularization.
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Affiliation(s)
- Karina
C. Scheiner
- Department
of Pharmaceutics, Utrecht Institute of Pharmaceutical Sciences, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
| | - Roel F. Maas-Bakker
- Department
of Pharmaceutics, Utrecht Institute of Pharmaceutical Sciences, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
| | - Thanh T. Nguyen
- InnoCore
Pharmaceuticals B.V., L.J. Zielstraweg 1, 9713 GX Groningen, The Netherlands
| | - Ana M. Duarte
- InnoCore
Pharmaceuticals B.V., L.J. Zielstraweg 1, 9713 GX Groningen, The Netherlands
| | - Gert Hendriks
- InnoCore
Pharmaceuticals B.V., L.J. Zielstraweg 1, 9713 GX Groningen, The Netherlands
| | - Lídia Sequeira
- InnoCore
Pharmaceuticals B.V., L.J. Zielstraweg 1, 9713 GX Groningen, The Netherlands
| | - Garry P. Duffy
- Discipline
of Anatomy, School of Medicine, National
University of Ireland Galway, University Road, H91 TK33 Galway, Ireland
| | - Rob Steendam
- InnoCore
Pharmaceuticals B.V., L.J. Zielstraweg 1, 9713 GX Groningen, The Netherlands
| | - Wim E. Hennink
- Department
of Pharmaceutics, Utrecht Institute of Pharmaceutical Sciences, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
| | - Robbert J. Kok
- Department
of Pharmaceutics, Utrecht Institute of Pharmaceutical Sciences, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
- E-mail: . Phone: +31 620275995. Fax: +31 30 251789
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Singh M, Devi S, Rana VS, Mishra BB, Kumar J, Ahluwalia V. Delivery of phytochemicals by liposome cargos: recent progress, challenges and opportunities. J Microencapsul 2019; 36:215-235. [PMID: 31092084 DOI: 10.1080/02652048.2019.1617361] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Bio-availability is a major concern in delivery of dietary phytochemicals for better bio-efficacy. The reduced bio-availability of food bioactive compounds is evident due to degradation during human digestion process which involves liberation, absorption, distribution, metabolism and elimination. The bio-efficacy of any nutrient can be increased by increasing bio-availability. Different technologies are available for engineered efficient delivery systems; still many challenges remain with advancement of delivery systems. The ease of preparedness and adaptability of liposomes has resulted in wide-range of applicability and acceptability in scientific field, especially as delivery vehicles. In view, of properties like biocompatibility and biodegradability, liposomes have been modified with different usable methodologies for delivery of phytochemicals. The aim of this review is to abridge liposomes, methods of preparation, their application as delivery cargo in dietary phytochemicals, result of using different preparation techniques on properties.
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Affiliation(s)
- Mangat Singh
- a Bioproduct Chemistry Laboratory , Center of Innovative and Applied Bioprocessing , Mohali , India
| | - Shanti Devi
- b Chemistry Division , Forest Research Institute , Dehradun , India
| | - Virendra S Rana
- c Division of Agricultural Chemicals , ICAR-Indian Agricultural Research Institute , New Delhi , India
| | - Bhuwan B Mishra
- a Bioproduct Chemistry Laboratory , Center of Innovative and Applied Bioprocessing , Mohali , India
| | - Jitendra Kumar
- c Division of Agricultural Chemicals , ICAR-Indian Agricultural Research Institute , New Delhi , India
| | - Vivek Ahluwalia
- a Bioproduct Chemistry Laboratory , Center of Innovative and Applied Bioprocessing , Mohali , India
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Zalloum N, Albino de Souza G, Martins TD. Single-Emulsion P(HB-HV) Microsphere Preparation Tuned by Copolymer Molar Mass and Additive Interaction. ACS OMEGA 2019; 4:8122-8135. [PMID: 31459903 PMCID: PMC6648277 DOI: 10.1021/acsomega.9b00824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Accepted: 04/25/2019] [Indexed: 06/10/2023]
Abstract
Herein, we describe the production of poly(hydroxybutyrate-co-hydroxyvalerate) [P(HB-HV)]-based microspheres containing coumarin-6 (C6) or pyrene (Py) fluorophores as additives and models for hydrophobic and hydrophilic drug encapsulation. Their photophysical and morphological properties, as well as encapsulation efficiencies, are studied as this work aims to describe the influence of additive hydrophobicity/hydrophilicity on microparticle formation. These properties were studied by scanning electron microscopy, fluorescence confocal laser scanning microscopy (FCLSM), and steady-state fluorescence spectroscopy. The results show that the surfactant concentration, polymer molar mass, emulsification stirring rate, and the presence of the fluorophore and its nature are determinants of the P(HB-HV) microsphere properties. Also, encapsulation efficiency is shown to be governed by synergic effects of these parameters on the formation of microspheres. Moreover, size distribution is proved to be strongly influenced by the surfactant poly(vinyl alcohol) content. FCLSM showed that the fluorophores were efficiently encapsulated in P(HB-HV) microspheres at distinct distributions within the copolymer matrix. Surprisingly, nanospheres were observed in the microsphere surface, suggesting that microspheres are formed from nanosphere coalescence.
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Affiliation(s)
- Neife
Lilian Zalloum
- Chemistry
Institute, State University of Campinas, P.O. Box 6154, 13083-971 Campinas, São Paulo, Brazil
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Chen Y, Xie Y, Liu M, Hu J, Tang C, Huang J, Qin T, Chen X, Chen W, Shen W, Yin Z. Controlled-release curcumin attenuates progression of tendon ectopic calcification by regulating the differentiation of tendon stem/progenitor cells. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 103:109711. [PMID: 31349489 DOI: 10.1016/j.msec.2019.04.090] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2018] [Revised: 04/19/2019] [Accepted: 04/29/2019] [Indexed: 01/30/2023]
Abstract
Tendon calcification is a common but intractable problem leading to pain and activity limitation when injury or tendinopathy progresses into the late stage. This is because tendon stem/progenitor cells (TSPCs) can undergo aberrant osteogenic differentiation under inflammatory conditions. This study aims to investigate the effect of curcumin, a natural anti-inflammatory agent, on regulating the differentiation of TSPCs in tendon calcification. With inflammatory stimulation, TSPCs showed higher alkaline phosphatase activity and more frequent formation of mineralized nodules which were verified in the culture system; however, curcumin significantly alleviated these pathological changes. In in vivo function analysis, chitosan microsphere-encapsulated curcumin was delivered to injured sites of rat tendon ectopic calcification model. The inflammation in the tendon tissues of the curcumin group was significantly relieved. Controlled-release curcumin partially rescued tendon calcification and enhanced tendon regeneration in animal model. This study demonstrates that controlled-release curcumin can manipulate the fate decision of TSPCs, and that it promotes the tenogenesis and inhibits the osteogenesis of TSPCs in a pathological microenvironment, which provides a possible new therapeutic strategy for tendon disease.
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Affiliation(s)
- Yangwu Chen
- School of Basic Medical Sciences, and Department of Orthopedic Surgery of The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China; Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, Zhejiang University School of Medicine, Hangzhou, China; Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, China; Orthopaedics Research Institute of Zhejiang Univerisity, China
| | - Yubin Xie
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, Zhejiang University School of Medicine, Hangzhou, China; Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, China
| | - Mengfei Liu
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, Zhejiang University School of Medicine, Hangzhou, China; Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, China
| | - Jiajie Hu
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, Zhejiang University School of Medicine, Hangzhou, China; Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, China
| | - Chenqi Tang
- School of Basic Medical Sciences, and Department of Orthopedic Surgery of The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China; Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, Zhejiang University School of Medicine, Hangzhou, China; Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, China; Orthopaedics Research Institute of Zhejiang Univerisity, China
| | - Jiayun Huang
- School of Basic Medical Sciences, and Department of Orthopedic Surgery of The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China; Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, Zhejiang University School of Medicine, Hangzhou, China; Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, China; Orthopaedics Research Institute of Zhejiang Univerisity, China
| | - Tian Qin
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, Zhejiang University School of Medicine, Hangzhou, China; Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, China
| | - Xiao Chen
- School of Basic Medical Sciences, and Department of Orthopedic Surgery of The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China; Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, Zhejiang University School of Medicine, Hangzhou, China; Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, China; Department of Sports Medicine, Zhejiang University School of Medicine, Hangzhou, China; China Orthopedic Regenerative Medicine Group (CORMed), China
| | - Weishan Chen
- School of Basic Medical Sciences, and Department of Orthopedic Surgery of The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China; Orthopaedics Research Institute of Zhejiang Univerisity, China.
| | - Weiliang Shen
- School of Basic Medical Sciences, and Department of Orthopedic Surgery of The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China; Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, Zhejiang University School of Medicine, Hangzhou, China; Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, China; Orthopaedics Research Institute of Zhejiang Univerisity, China; Department of Sports Medicine, Zhejiang University School of Medicine, Hangzhou, China; China Orthopedic Regenerative Medicine Group (CORMed), China.
| | - Zi Yin
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, Zhejiang University School of Medicine, Hangzhou, China; Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, China.
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Soni G, Yadav KS, Gupta MK. Design of Experiments (DoE) Approach to Optimize the Sustained Release Microparticles of Gefitinib. Curr Drug Deliv 2019; 16:364-374. [DOI: 10.2174/1567201816666181227114109] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2018] [Revised: 12/07/2018] [Accepted: 12/12/2018] [Indexed: 01/31/2023]
Abstract
Background:
Gefitinib (GEF), the kinase inhibitor, is presently available as tablets to be taken orally in high doses of 250-500 mg per day due to its poor solubility. The solubility issues affect not only its onset of action but also the bioavailability. These drawbacks foresight the need to have an alternate dosage form, preferably a sustained release formulation.
Methods:
In the present study, microparticles were prepared by emulsion solvent evaporation using PLGA 50:50 (GEF-PLGA MP). A 32 factorial design was used to optimize the critical quality parameters to the set mean particle size in the range of 7.4±2.5 µm and entrapment efficiency of 80%. SEM microscopy of the prepared microparticles confirmed to have a spherical smooth shape. The GEFPLGA- MPs sustained the release of GEF for 72 hours. The first-order kinetics ruled the mechanism of drug release and was predicted to follow Fickian diffusion.
Result:
Anticancer efficacy was judged by the cytotoxicity studies using the L132 lung cancer cells. MTT assay showed 3-fold enhanced cytotoxicity of GEF loaded microparticles against L132 cells as compared to plain GEF.
Conclusion:
It was concluded that gefitinib can be efficiently loaded into the biodegradable polymer PLGA to provide sustained release of the drug.
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Affiliation(s)
- Govind Soni
- Oriental College of Pharmacy and Research, Oriental University, Indore-453555, MP, India
| | - Khushwant S. Yadav
- Shobhaben Pratapbhai Patel School of Pharmacy & Technology Management, SVKM's NMIMS (Deemed to be University), V.L Mehta Road, Vile Parle (W), Mumbai – 400 056, India
| | - Mahesh K. Gupta
- Oriental College of Pharmacy and Research, Oriental University, Indore-453555, MP, India
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Küçükoflaz M, Saraçoğlu Kaya B, Caglayan MO. Determination of mechanical properties of polymeric microspheres used in controlled drug delivery systems by nanoindentation. POLYM-PLAST TECH MAT 2018. [DOI: 10.1080/03602559.2018.1520252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Vannozzi L, Iacovacci V, Menciassi A, Ricotti L. Nanocomposite thin films for triggerable drug delivery. Expert Opin Drug Deliv 2018. [PMID: 29521583 DOI: 10.1080/17425247.2018.1451512] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
INTRODUCTION Traditional drug release systems normally rely on a passive delivery of therapeutic compounds, which can be partially programmed, prior to injection or implantation, through variations in the material composition. With this strategy, the drug release kinetics cannot be remotely modified and thus adapted to changing therapeutic needs. To overcome this issue, drug delivery systems able to respond to external stimuli are highly desirable, as they allow a high level of temporal and spatial control over drug release kinetics, in an operator-dependent fashion. AREAS COVERED On-demand drug delivery systems actually represent a frontier in this field and are attracting an increasing interest at both research and industrial level. Stimuli-responsive thin films, enabled by nanofillers, hold a tremendous potential in the field of triggerable drug delivery systems. The inclusion of responsive elements in homogeneous or heterogeneous thin film-shaped polymeric matrices strengthens and/or adds intriguing properties to conventional (bare) materials in film shape. EXPERT OPINION This Expert Opinion review aims to discuss the approaches currently pursued to achieve an effective on-demand drug delivery, through nanocomposite thin films. Different triggering mechanisms allowing a fine control on drug delivery are described, together with current challenges and possible future applications in therapy and surgery.
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Affiliation(s)
- Lorenzo Vannozzi
- a The BioRobotics Institute , Scuola Superiore Sant'Anna , Pontedera , Italy
| | - Veronica Iacovacci
- a The BioRobotics Institute , Scuola Superiore Sant'Anna , Pontedera , Italy
| | - Arianna Menciassi
- a The BioRobotics Institute , Scuola Superiore Sant'Anna , Pontedera , Italy
| | - Leonardo Ricotti
- a The BioRobotics Institute , Scuola Superiore Sant'Anna , Pontedera , Italy
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Lee SH, Kim HY, Back SY, Han HK. Piperine-mediated drug interactions and formulation strategy for piperine: recent advances and future perspectives. Expert Opin Drug Metab Toxicol 2017; 14:43-57. [PMID: 29250980 DOI: 10.1080/17425255.2018.1418854] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
INTRODUCTION Piperine has various pharmacological effects and can modulate the functional activity of metabolic enzymes and drug transporters. Consequently, there is a great interest in the application of piperine as an alternative medicine or bioavailability enhancer. Areas covered: This review deals with the effects of piperine on metabolizing enzymes and drug transporters. It provides the readers with an update on transporter-mediated and also metabolic enzyme-mediated piperine-drug interactions, with emphasis on its in vivo implications. This article also encompasses recent advances in the formulation approaches and technologies for optimizing the delivery of piperine. Expert opinion: Piperine can influence the pharmacokinetics of coadministered drugs, which may result in a therapeutically beneficial or adverse effect. Given that piperine inhibits or stimulates the activity of metabolic enzymes and transporters depending on the treatment conditions, the clinical significance of piperine-drug interactions should be assessed by varying the dose, dosing frequency, and the duration of treatment. In particular, better understanding the clinical relevance of piperine-drug interactions based on long-term assessments will provide a strong basis for the feasibility and applicability of piperine as a bioenhancer or a health-promoting agent. The development of effective formulations is also critical to facilitate the therapeutic applications of piperine.
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Affiliation(s)
- Sang Hoon Lee
- a College of Pharmacy , Dongguk University-Seoul , Goyang , Korea
| | - Hyeon Young Kim
- a College of Pharmacy , Dongguk University-Seoul , Goyang , Korea
| | - Seung Yun Back
- a College of Pharmacy , Dongguk University-Seoul , Goyang , Korea
| | - Hyo-Kyung Han
- a College of Pharmacy , Dongguk University-Seoul , Goyang , Korea
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Teekamp N, Van Dijk F, Broesder A, Evers M, Zuidema J, Steendam R, Post E, Hillebrands J, Frijlink H, Poelstra K, Beljaars L, Olinga P, Hinrichs W. Polymeric microspheres for the sustained release of a protein-based drug carrier targeting the PDGFβ-receptor in the fibrotic kidney. Int J Pharm 2017; 534:229-236. [DOI: 10.1016/j.ijpharm.2017.09.072] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Revised: 09/27/2017] [Accepted: 09/29/2017] [Indexed: 10/18/2022]
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Cruz-Neves S, Shirosaki Y, Miyazaki T, Hayakawa S. Characterization and degradation study of chitosan-siloxane hybrid microspheres synthesized using a microfluidic approach. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 81:571-579. [DOI: 10.1016/j.msec.2017.08.035] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Revised: 07/20/2017] [Accepted: 08/10/2017] [Indexed: 10/19/2022]
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Chen Y, Dakwar GR, Braeckmans K, Lammers T, Hennink WE, Metselaar JM. In Vitro Evaluation of Anti-Aggregation and Degradation Behavior of PEGylated Polymeric Nanogels under In Vivo Like Conditions. Macromol Biosci 2017; 18. [PMID: 29152858 DOI: 10.1002/mabi.201700127] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2017] [Revised: 05/20/2017] [Indexed: 11/07/2022]
Abstract
The in vivo stability and biodegradability of nanocarriers crucially determine therapeutic efficacy as well as safety when used for drug delivery. This study aims to evaluate optimized in vitro techniques predictive for in vivo nanocarrier behavior. Polymeric biodegradable nanogels based on hydroxyethyl methacrylamide-oligoglycolates-derivatized poly(hydroxyethyl methacrylamide-co-N-(2-azidoethyl)methacrylamide) and with various degrees of PEGylation and crosslinking densities are prepared. Three techniques are chosen and refined for specific in vitro evaluation of the nanocarrier performance: (1) fluorescence single particle tracking (fSPT) to study the stability of nanogels in human plasma, (2) tangential flow filtration (TFF) to study the degradation and filtration of nanogel degradation products, and (3) fluorescence fluctuation spectroscopy (FFS) to evaluate and compare the degradation behavior of nanogels in buffer and plasma. fSPT results demonstrate that nanogels with highest PEGylation content show the least aggregation. The TFF results reveal that nanogels with higher crosslink density have slower degradation and removal by filtration. FFS results indicate a similar degradation behavior in human plasma as compared to that in phosphate buffered saline. In conclusion, three methods can be used to compare and select the optimal nanogel composition, and these methods hold potential to predict the in vivo performance of nanocarriers.
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Affiliation(s)
- Yinan Chen
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, 3584, CG, Utrecht, The Netherlands
| | - George R Dakwar
- Laboratory for General Biochemistry and Physical Pharmacy, Faculty of Pharmaceutical Sciences, Ghent University, 9000, Ghent, Belgium
| | - Kevin Braeckmans
- Laboratory for General Biochemistry and Physical Pharmacy, Faculty of Pharmaceutical Sciences, Ghent University, 9000, Ghent, Belgium
| | - Twan Lammers
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, 3584, CG, Utrecht, The Netherlands.,Department of Nanomedicine and Theranostics, Institute for Experimental Molecular Imaging, RWTH Aachen University Clinic, 52074, Aachen, Germany.,Department of Targeted Therapeutics, MIRA Institute for Biomedical Engineering and Technical Medicine, University of Twente, 7522, NB, Enschede, The Netherlands
| | - Wim E Hennink
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, 3584, CG, Utrecht, The Netherlands
| | - Josbert M Metselaar
- Department of Nanomedicine and Theranostics, Institute for Experimental Molecular Imaging, RWTH Aachen University Clinic, 52074, Aachen, Germany.,Department of Targeted Therapeutics, MIRA Institute for Biomedical Engineering and Technical Medicine, University of Twente, 7522, NB, Enschede, The Netherlands
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Rajwani A, Restall B, Muller NJ, Roebuck S, Willerth SM. An Affordable Microsphere-Based Device for Visual Assessment of Water Quality. BIOSENSORS 2017; 7:E31. [PMID: 28783063 PMCID: PMC5618037 DOI: 10.3390/bios7030031] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/02/2017] [Revised: 07/29/2017] [Accepted: 08/02/2017] [Indexed: 12/20/2022]
Abstract
This work developed a prototype of an affordable, long-term water quality detection device that provides a visual readout upon detecting bacterial contamination. This device prototype consists of: (1) enzyme-releasing microspheres that lyse bacteria present in a sample, (2) microspheres that release probes that bind the DNA of the lysed bacteria, and (3) a detector region consisting of gold nanoparticles. The probes bind bacterial DNA, forming complexes. These complexes induce aggregation of the gold nanoparticles located in the detector region. The nanoparticle aggregation process causes a red to blue color change, providing a visual indicator of contamination being detected. Our group fabricated and characterized microspheres made of poly (ε-caprolactone) that released lysozyme (an enzyme that degrades bacterial cell walls) and hairpin DNA probes that bind to regions of the Escherichiacoli genome over a 28-day time course. The released lysozyme retained its ability to lyse bacteria. We then showed that combining these components with gold nanoparticles followed by exposure to an E. coli-contaminated water sample (concentrations tested-10⁶ and 10⁸ cells/mL) resulted in a dramatic red to blue color change. Overall, this device represents a novel low-cost system for long term detection of bacteria in a water supply and other applications.
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Affiliation(s)
- Azra Rajwani
- Biomedical Engineering program, University of Victoria, Victoria, BC V8W 2Y2, Canada.
| | - Brendon Restall
- Biomedical Engineering program, University of Victoria, Victoria, BC V8W 2Y2, Canada.
| | - Nathan J Muller
- Department of Mechanical Engineering, University of Victoria, Victoria, BC V8W 2Y2, Canada.
| | - Scott Roebuck
- Division of Medical Sciences, University of Victoria, Victoria, BC V8W 2Y2, Canada.
| | - Stephanie M Willerth
- Department of Mechanical Engineering, University of Victoria, Victoria, BC V8W 2Y2, Canada.
- Division of Medical Sciences, University of Victoria, Victoria, BC V8W 2Y2, Canada.
- Centre for Biomedical Research, University of Victoria, Victoria, BC V8W 2Y2, Canada.
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Li H, Lv N, Li X, Liu B, Feng J, Ren X, Guo T, Chen D, Fraser Stoddart J, Gref R, Zhang J. Composite CD-MOF nanocrystals-containing microspheres for sustained drug delivery. NANOSCALE 2017; 9:7454-7463. [PMID: 28530283 DOI: 10.1039/c6nr07593b] [Citation(s) in RCA: 144] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Metal-organic frameworks (MOFs), which are typically embedded in polymer matrices as composites, are emerging as a new class of carriers for sustained drug delivery. Most of the MOFs and the polymers used so far in these composites, however, are not pharmaceutically acceptable. In the investigation reported herein, composites of γ-cyclodextrin (γ-CD)-based MOFs (CD-MOFs) and polyacrylic acid (PAA) were prepared by a solid in oil-in-oil (s/o/o) emulsifying solvent evaporation method. A modified hydrothermal protocol has been established which produces efficiently at 50 °C in 6 h micron (5-10 μm) and nanometer (500-700 nm) diameter CD-MOF particles of uniform size with smooth surfaces and powder X-ray diffraction patterns that are identical with those reported in the literature. Ibuprofen (IBU) and Lansoprazole (LPZ), both insoluble in water and lacking in stability, were entrapped with high drug loading in nanometer-sized CD-MOFs by co-crystallisation (that is more effective than impregnation) without causing MOF crystal degradation during the loading process. On account of the good dispersion of drug-loaded CD-MOF nanocrystals inside polyacrylic acid (PAA) matrices and the homogeneous distribution of the drug molecules within these crystals, the composite microspheres exhibit not only spherical shapes and sustained drug release over a prolonged period of time, but they also demonstrate reduced cell toxicity. The cumulative release rate for IBU (and LPZ) follows the trend: IBU-γ-CD complex microspheres (ca. 80% in 2 h) > IBU microspheres > IBU-CD-MOF/PAA composite microspheres (ca. 50% in 24 h). Importantly, no burst release of IBU (and LPZ) was observed from the CD-MOF/PAA composite microspheres, suggesting an even distribution of the drug as well as strong drug carrier interactions inside the CD-MOF. In summary, these composite microspheres, composed of CD-MOF nanocrystals embedded in a biocompatible polymer (PAA) matrix, constitute an efficient and pharmaceutically acceptable MOF-based carrier for sustained drug release.
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Affiliation(s)
- Haiyan Li
- Center for Drug Delivery System, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 501 Haike Road, Shanghai 201203, China.
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Wang L, Yang Q, Chen Y, Chai Y, Li JJ, Du L, Tan R, Yang S, Tu M, Yu B. A reformative shear precipitation procedure for the fabrication of vancomycin-loaded poly(lactide-co-glycolide) microspheres. J Biomater Appl 2017; 31:995-1009. [PMID: 28068861 DOI: 10.1177/0885328216689199] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
This study reports the encapsulation of vancomycin, as a model hydrophilic drug, into poly(lactide-co-glycolide) microspheres using a novel reformative shear precipitation procedure. In contrast to the external aqueous phase used in the conventional microencapsulation technique based on emulsion solvent evaporation/extraction, the reformative shear precipitation procedure explored in this study uses a shear medium composed of glycerol as the viscous medium and ethanol as polymer antisolvent, which is relatively immiscible with the hydrophilic drug. This limits drug diffusion and leads to rapid microsphere solidification, which allows a large proportion of the hydrophilic drug to be encapsulated within the microspheres. The influence of various processing parameters, including polymer concentration, volume ratio of ethanol to glycerol in the shear medium, volume of aqueous drug solution, initial drug loading, and injecting rate of the drug-polymer emulsion, on the encapsulation efficiency and characteristics of resulting microspheres were investigated. The morphology and release characteristics, as well as mechanical, in vitro and in vivo behaviour of vancomycin-loaded poly(lactide-co-glycolide) microspheres prepared using the novel procedure were also investigated. The results demonstrated that the reformative shear precipitation procedure could achieve the loading of hydrophilic drugs into poly(lactide-co-glycolide) microspheres with high encapsulation efficiency, and the success of the procedure was largely influenced by the volume ratio of ethanol to glycerol in the shear medium. Vancomycin-loaded poly(lactide-co-glycolide) microspheres prepared using this procedure demonstrated favourable mechanical characteristics, antibacterial activity, and in vivo degradation behaviour which suggested their suitability for use as a sustained delivery system.
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Affiliation(s)
- Lei Wang
- 1 Department of Orthopaedics and Traumatology, Nanfang Hospital, Southern Medical University, Guangzhou, People's Republic of China
| | - Qinmeng Yang
- 1 Department of Orthopaedics and Traumatology, Nanfang Hospital, Southern Medical University, Guangzhou, People's Republic of China
| | - Yirong Chen
- 1 Department of Orthopaedics and Traumatology, Nanfang Hospital, Southern Medical University, Guangzhou, People's Republic of China
| | - Yu Chai
- 1 Department of Orthopaedics and Traumatology, Nanfang Hospital, Southern Medical University, Guangzhou, People's Republic of China
| | - Jiao Jiao Li
- 2 Biomaterials and Tissue Engineering Research Unit, School of AMME, University of Sydney, Sydney, NSW, Australia
| | - Lin Du
- 3 Department of Materials Science and Engineering, College of Science and Engineering, Jinan University, Guangzhou, People's Republic of China
| | - Ruizhe Tan
- 3 Department of Materials Science and Engineering, College of Science and Engineering, Jinan University, Guangzhou, People's Republic of China
| | - Shenyu Yang
- 3 Department of Materials Science and Engineering, College of Science and Engineering, Jinan University, Guangzhou, People's Republic of China
| | - Mei Tu
- 3 Department of Materials Science and Engineering, College of Science and Engineering, Jinan University, Guangzhou, People's Republic of China
| | - Bin Yu
- 1 Department of Orthopaedics and Traumatology, Nanfang Hospital, Southern Medical University, Guangzhou, People's Republic of China
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