1
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Ungor I, Apidianakis Y. Bacterial synergies and antagonisms affecting Pseudomonas aeruginosa virulence in the human lung, skin and intestine. Future Microbiol 2024; 19:141-155. [PMID: 37843410 DOI: 10.2217/fmb-2022-0155] [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: 07/07/2023] [Accepted: 09/12/2023] [Indexed: 10/17/2023] Open
Abstract
Pseudomonas aeruginosa requires a significant breach in the host defense to cause an infection. While its virulence factors are well studied, its tropism cannot be explained only by studying its interaction with the host. Why are P. aeruginosa infections so rare in the intestine compared with the lung and skin? There is not enough evidence to claim specificity in virulence factors deployed by P. aeruginosa in each anatomical site, and host physiology differences between the lung and the intestine cannot easily explain the observed differences in virulence. This perspective highlights a relatively overlooked parameter in P. aeruginosa virulence, namely, potential synergies with bacteria found in the human skin and lung, as well as antagonisms with bacteria of the human intestine.
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Affiliation(s)
- Izel Ungor
- Department of Biological Sciences, University of Cyprus, Nicosia, 2109, Cyprus
| | - Yiorgos Apidianakis
- Department of Biological Sciences, University of Cyprus, Nicosia, 2109, Cyprus
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2
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Abdi F, Buzhor MG, Zellweger N, Zhi-Luo, Leroux JC. pH-dependent pressure-sensitive colonic capsules for the delivery of aqueous bacterial suspensions. J Control Release 2024; 365:688-702. [PMID: 38040343 DOI: 10.1016/j.jconrel.2023.11.048] [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: 06/14/2023] [Revised: 11/21/2023] [Accepted: 11/24/2023] [Indexed: 12/03/2023]
Abstract
Microbiome-based therapies hold great promise for treating various diseases, but the efficient delivery of live bacteria to the colon remains a challenge. Furthermore, current oral formulations, such as lyophilized bacterial capsules or tablets, are produced using processes that can decrease bacterial viability. Consequently, high dosages are required to achieve efficacy. Herein, we report the design of pressure-sensitive colonic capsules for the encapsulation and delivery of aqueous suspensions of live bacteria. The capsules consisted of 2 functional thin-films (hydrophobic and enteric) of ethyl cellulose and Eudragit S100 dip-coated onto hydroxypropyl methylcellulose molds. The capsules could be loaded with aqueous media and provide protection against acidic fluids and, to some extent, oxygen diffusion, suggesting their potential suitability for delivering anaerobic bacterial strains. Disintegration and mechanical studies indicated that the capsules could withstand transit through the stomach and upper/proximal small intestinal segments and rupture in the ileum/colon. In vitro studies showed that bacterial cells (anaerobic and aerobic commensals) remained highly viable (74-98%) after encapsulation and exposure to the simulated GI tract conditions. In vivo studies with a beagle dog model revealed that 67% of the capsules opened after 3.5 h, indicating content release in the distal gastrointestinal tract. These data demonstrate that live aqueous bacterial suspensions comprised of both aerobic and anaerobic commensals can be encapsulated and in the future might be efficiently delivered to the distal gastrointestinal tract, suggesting the practical applications of these capsules in microbiome-based therapies.
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Affiliation(s)
- Fatma Abdi
- Institute of Pharmaceutical Sciences, Department of Chemistry and Applied Biosciences, ETH Zürich, 8093 Zürich, Switzerland
| | - Marina Green Buzhor
- Institute of Pharmaceutical Sciences, Department of Chemistry and Applied Biosciences, ETH Zürich, 8093 Zürich, Switzerland
| | - Nadia Zellweger
- Institute of Pharmaceutical Sciences, Department of Chemistry and Applied Biosciences, ETH Zürich, 8093 Zürich, Switzerland
| | - Zhi-Luo
- Department of Biomedical Engineering, Southern University of Science and Technology, 518055 Shenzhen, Guangdong, China
| | - Jean-Christophe Leroux
- Institute of Pharmaceutical Sciences, Department of Chemistry and Applied Biosciences, ETH Zürich, 8093 Zürich, Switzerland.
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3
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Tai Y, Tian M, Chen Y, You P, Song X, Xu B, Duan C, Jin D. Preparation of PLGA microspheres loaded with niclosamide via microfluidic technology and their inhibition of Caco-2 cell activity in vitro. Front Chem 2023; 11:1249293. [PMID: 37780982 PMCID: PMC10537947 DOI: 10.3389/fchem.2023.1249293] [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: 06/28/2023] [Accepted: 09/04/2023] [Indexed: 10/03/2023] Open
Abstract
Niclosamide (NIC) is a multifunctional drug that regulates various signaling pathways and biological processes. It is widely used for the treatment of cancer, viral infections, and metabolic disorders. However, its low water solubility limits its efficacy. In this study, poly(lactic-co-glycolic acid) (PLGA) and hyaluronic acid (HA), which exhibit good biocompatibility, biodegradability, and non-immunogenicity, were conjugated with niclosamide to prepare PLGA-HA-niclosamide polymeric nanoparticles (NIC@PLGA-HA) using microfluidic technology. The obtained microspheres had a uniform size distribution, with an average mean size of 442.0 ± 18.8 nm and zeta potential of -25.4 ± 0.41 mV, indicating their stable dispersion in water. The drug-loading efficiency was 8.70%. The drug-loaded microspheres showed sustained release behavior at pH 7.4 and 5.0, but not at pH 2.0, and the drug release kinetics were described by a quasi-first-order kinetic equation. The effect of the drug-loaded microspheres on the proliferation of Caco-2 cells was detected using the MTT assay. Hydrophilic HA-modified NIC@PLGA-HA microspheres prepared via microfluidic technology increased the cellular uptake by Caco-2 cells. Compared to the same concentration of NIC, the NIC@PLGA-HA microspheres demonstrated a stronger inhibitory effect on Caco-2 cells owing to the combined effect of PLGA, HA, and NIC. Therefore, the pH-responsive NIC@PLGA-HA microspheres synthesized using microfluid technology increased the solubility of NIC and improved its biological activity, thus contributing to the demand for intestinal drug carriers.
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Affiliation(s)
- Yulei Tai
- School Laboratory of Medicine, Hangzhou Medical College, Hangzhou, Zhejiang, China
- Laboratory of Biomarkers and In Vitro Diagnosis Translation of Zhejiang Province, Hangzhou, Zhejiang, China
| | - Menglun Tian
- School Laboratory of Medicine, Hangzhou Medical College, Hangzhou, Zhejiang, China
- Laboratory of Biomarkers and In Vitro Diagnosis Translation of Zhejiang Province, Hangzhou, Zhejiang, China
| | - Yu Chen
- School Laboratory of Medicine, Hangzhou Medical College, Hangzhou, Zhejiang, China
- Laboratory of Biomarkers and In Vitro Diagnosis Translation of Zhejiang Province, Hangzhou, Zhejiang, China
| | - Peijun You
- School Laboratory of Medicine, Hangzhou Medical College, Hangzhou, Zhejiang, China
- Laboratory of Biomarkers and In Vitro Diagnosis Translation of Zhejiang Province, Hangzhou, Zhejiang, China
| | - Xiaojun Song
- School Laboratory of Medicine, Hangzhou Medical College, Hangzhou, Zhejiang, China
- Laboratory of Biomarkers and In Vitro Diagnosis Translation of Zhejiang Province, Hangzhou, Zhejiang, China
| | - Bangting Xu
- School Laboratory of Medicine, Hangzhou Medical College, Hangzhou, Zhejiang, China
| | - Cidong Duan
- School Laboratory of Medicine, Hangzhou Medical College, Hangzhou, Zhejiang, China
- Laboratory of Biomarkers and In Vitro Diagnosis Translation of Zhejiang Province, Hangzhou, Zhejiang, China
| | - Dazhi Jin
- School Laboratory of Medicine, Hangzhou Medical College, Hangzhou, Zhejiang, China
- Laboratory of Biomarkers and In Vitro Diagnosis Translation of Zhejiang Province, Hangzhou, Zhejiang, China
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4
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Moutaharrik S, Maroni A, Neut C, Dubuquoy C, Dubuquoy L, Foppoli A, Cerea M, Palugan L, Siepmann F, Siepmann J, Gazzaniga A. In vitro and in vivo evaluation of a pH-, microbiota- and time-based oral delivery platform for colonic release. Eur J Pharm Biopharm 2023; 183:13-23. [PMID: 36563887 DOI: 10.1016/j.ejpb.2022.12.013] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 12/10/2022] [Accepted: 12/18/2022] [Indexed: 12/24/2022]
Abstract
Several formulation strategies have been proposed for oral colon delivery, particularly for the therapy of inflammatory bowel disease (IBD). However, targeting the large intestine remains a challenging goal. The aim of this study was to develop and evaluate a novel type of drug delivery system, which is based on multiple drug release triggers for reliable performance. The system consists of: (i) a drug core, (ii) an inner swellable low-viscosity hydroxypropyl methylcellulose (HPMC) layer, and (iii) an outer film coating based on a Eudragit® S:high-methoxyl (HM) pectin (7:3 w/w) blend, optionally containing chitosan. Convex immediate release tablets (2 or 4 mm in diameter) containing paracetamol or 5-aminosalicylic acid (5-ASA) were coated in a fluid bed. The double-coated tablets exhibited pulsatile release profiles when changing the release medium from 0.1 N HCl to phosphate buffer pH 7.4. Also, drug release was faster in simulated colonic fluid (SCF) in the presence of fecal bacteria from IBD patients compared to control culture medium from tablets with outer Eudragit® S: HM pectin: chitosan coatings. The latter systems showed promising results in the control of the progression of colitis and alteration of the microbiota in a preliminary rat study.
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Affiliation(s)
- S Moutaharrik
- Università degli Studi di Milano, Dipartimento di Scienze Farmaceutiche (DISFARM), Sezione di Tecnologia e Legislazione Farmaceutiche "Maria Edvige Sangalli", 20133 Milan, Italy.
| | - A Maroni
- Università degli Studi di Milano, Dipartimento di Scienze Farmaceutiche (DISFARM), Sezione di Tecnologia e Legislazione Farmaceutiche "Maria Edvige Sangalli", 20133 Milan, Italy.
| | - C Neut
- University of Lille, Inserm, CHU Lille, U1286 - INFINITE - Institute for Translational Research in Inflammation, F-59000 Lille, France.
| | - C Dubuquoy
- University of Lille, Inserm, CHU Lille, U1286 - INFINITE - Institute for Translational Research in Inflammation, F-59000 Lille, France.
| | - L Dubuquoy
- University of Lille, Inserm, CHU Lille, U1286 - INFINITE - Institute for Translational Research in Inflammation, F-59000 Lille, France.
| | - A Foppoli
- Università degli Studi di Milano, Dipartimento di Scienze Farmaceutiche (DISFARM), Sezione di Tecnologia e Legislazione Farmaceutiche "Maria Edvige Sangalli", 20133 Milan, Italy.
| | - M Cerea
- Università degli Studi di Milano, Dipartimento di Scienze Farmaceutiche (DISFARM), Sezione di Tecnologia e Legislazione Farmaceutiche "Maria Edvige Sangalli", 20133 Milan, Italy.
| | - L Palugan
- Università degli Studi di Milano, Dipartimento di Scienze Farmaceutiche (DISFARM), Sezione di Tecnologia e Legislazione Farmaceutiche "Maria Edvige Sangalli", 20133 Milan, Italy.
| | - F Siepmann
- University of Lille, Inserm, CHU Lille, U1008, F-59000 Lille, France.
| | - J Siepmann
- University of Lille, Inserm, CHU Lille, U1008, F-59000 Lille, France.
| | - A Gazzaniga
- Università degli Studi di Milano, Dipartimento di Scienze Farmaceutiche (DISFARM), Sezione di Tecnologia e Legislazione Farmaceutiche "Maria Edvige Sangalli", 20133 Milan, Italy.
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5
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Doggwiler V, Lanz M, Paredes V, Lipps G, Imanidis G. Tablet formulation with dual control concept for efficient colonic drug delivery. Int J Pharm 2023; 631:122499. [PMID: 36529358 DOI: 10.1016/j.ijpharm.2022.122499] [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: 09/27/2022] [Revised: 12/10/2022] [Accepted: 12/12/2022] [Indexed: 12/23/2022]
Abstract
Aim of this study was to develop a tablet formulation for targeted colonic drug release by implementing two control mechanisms: A pH-sensitive coating layer based on Eudragit® FS 30 D to prevent drug release in the upper gastrointestinal tract, combined with a matrix based on plant-derived polysaccharide xyloglucan to inhibit drug release after coating removal in the small intestine and to allow microbiome triggered drug release in the colon. In vitro dissolution tests simulated the passage through the entire gastrointestinal tract with a four-stage protocol, including microbial xyloglucanase addition in physiologically relevant concentrations as microbiome surrogate to the colonic dissolution medium. Matrix erosion was monitored in parallel to drug release by measurement of reducing sugar equivalents resulting from xyloglucan hydrolysis. Limited drug release in gastric and small intestinal test stages and predominant release in the colonic stage was achieved. The xyloglucan matrix controlled drug release after dissolution of the enteric coating through the formation of a gummy polysaccharide layer at the tablet surface. Matrix degradation was dependent on enzyme concentration in the colonic medium and significantly accelerated drug release resulting in erosion-controlled release process. Drug release at physiologically relevant enzyme concentration was completed within the bounds of colonic transit time. The dual control concept was applicable to two drug substances with different solubility, providing similar release rates in colonic environment containing xyloglucanase. Drug solubility mechanistically affected release, with diffusion of caffeine, but not of 5-ASA, contributing to the overall release rate out of the matrix tablet.
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Affiliation(s)
- Viviane Doggwiler
- School of Life Sciences, University of Applied Sciences Northwestern Switzerland, Hofackerstrasse 30, 4132 Muttenz, Switzerland; Department of Pharmaceutical Sciences, University of Basel, Klingelbergstrasse 50, 4056 Basel, Switzerland
| | - Michael Lanz
- School of Life Sciences, University of Applied Sciences Northwestern Switzerland, Hofackerstrasse 30, 4132 Muttenz, Switzerland
| | - Valeria Paredes
- School of Life Sciences, University of Applied Sciences Northwestern Switzerland, Hofackerstrasse 30, 4132 Muttenz, Switzerland
| | - Georg Lipps
- School of Life Sciences, University of Applied Sciences Northwestern Switzerland, Hofackerstrasse 30, 4132 Muttenz, Switzerland
| | - Georgios Imanidis
- School of Life Sciences, University of Applied Sciences Northwestern Switzerland, Hofackerstrasse 30, 4132 Muttenz, Switzerland; Department of Pharmaceutical Sciences, University of Basel, Klingelbergstrasse 50, 4056 Basel, Switzerland.
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6
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Impact of gastric and bowel surgery on gastrointestinal drug delivery. Drug Deliv Transl Res 2023; 13:37-53. [PMID: 35585472 PMCID: PMC9726802 DOI: 10.1007/s13346-022-01179-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/05/2022] [Indexed: 01/01/2023]
Abstract
General surgical procedures on the gastrointestinal tract are commonly performed worldwide. Surgical resections of the stomach, small intestine, or large intestine can have a significant impact on the anatomy and physiological environment of the gastrointestinal tract. These physiological changes can affect the effectiveness of orally administered formulations and drug absorption and, therefore, should be considered in rational drug formulation design for specific pathological conditions that are commonly associated with surgical intervention. For optimal drug delivery, it is important to understand how different surgical procedures affect the short-term and long-term functionality of the gastrointestinal tract. The significance of the surgical intervention is dependent on factors such as the specific region of resection, the degree of the resection, the adaptive and absorptive capacity of the remaining tissue, and the nature of the underlying disease. This review will focus on the common pathological conditions affecting the gastric and bowel regions that may require surgical intervention and the physiological impact of the surgery on gastrointestinal drug delivery. The pharmaceutical considerations for conventional and novel oral drug delivery approaches that may be impacted by general surgical procedures of the gastrointestinal tract will also be addressed.
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7
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Lee J, Saparbayeva A, Hlaing SP, Kwak D, Kim H, Kim J, Lee EH, Yoo JW. Cupriavidus necator-Produced Polyhydroxybutyrate/Eudragit FS Hybrid Nanoparticles Mitigates Ulcerative Colitis via Colon-Targeted Delivery of Cyclosporine A. Pharmaceutics 2022; 14:pharmaceutics14122811. [PMID: 36559305 PMCID: PMC9787777 DOI: 10.3390/pharmaceutics14122811] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2022] [Revised: 12/07/2022] [Accepted: 12/13/2022] [Indexed: 12/23/2022] Open
Abstract
Polyhydroxybutyrate (PHB) has emerged as a novel material for replacing various plastics used in the medical field. However, its application as a drug-delivery carrier for colitis-targeted delivery has not been explored. In this study, we used biosynthesized PHB combined with Eudragit FS (EFS) and cyclosporine A (CSA) to develop pH-responsive controlled CSA-releasing nanoparticles (CSA-PENPs) for colitis-targeted drug delivery and demonstrated its enhanced therapeutic efficacy in a dextran sulfate sodium (DSS)-induced murine colitis model. PHB was successfully biosynthesized in the bacterium Cupriavidus necator, as demonstrated by 1H-NMR and FT-IR analyses. CSA-PENPs were fabricated via the oil-in-water emulsion solvent evaporation method. Owing to the potent pH-responsive and sustained drug release properties provided by PHB and EFS, CSA-PENPs could deliver a sufficient amount of CSA to inflamed tissues in the distal colon; in contrast, CSA-loaded EFS nanoparticles displayed premature burst release before reaching the target site. Due to enhanced CSA delivery to colitis tissues, CSA-PENPs exhibited potent anti-inflammatory effects in the DSS-induced murine colitis model. Overall, CSA-PENPs could be a promising drug-delivery system for treating ulcerative colitis.
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Affiliation(s)
- Juho Lee
- College of Pharmacy, Pusan National University, Busan 46241, Republic of Korea
| | - Aruzhan Saparbayeva
- College of Pharmacy, Pusan National University, Busan 46241, Republic of Korea
| | - Shwe Phyu Hlaing
- College of Pharmacy, Pusan National University, Busan 46241, Republic of Korea
| | - Dongmin Kwak
- College of Pharmacy, Pusan National University, Busan 46241, Republic of Korea
| | - Hyunwoo Kim
- College of Pharmacy, Pusan National University, Busan 46241, Republic of Korea
| | - Jihyun Kim
- College of Pharmacy, Pusan National University, Busan 46241, Republic of Korea
| | - Eun Hee Lee
- College of Pharmacy, Korea University, Sejong 30019, Republic of Korea
| | - Jin-Wook Yoo
- College of Pharmacy, Pusan National University, Busan 46241, Republic of Korea
- Correspondence: ; Tel.: +82-51-510-2807
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8
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Xu R, Weber MC, Hu X, Neumann PA, Kamaly N. Annexin A1 based inflammation resolving mediators and nanomedicines for inflammatory bowel disease therapy. Semin Immunol 2022; 61-64:101664. [PMID: 36306664 DOI: 10.1016/j.smim.2022.101664] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Inflammatory bowel diseases (IBD) such as Crohn's Disease (CD) and Ulcerative Colitis (UC) are chronic, progressive, and relapsing disorders of the gastrointestinal tract (GIT), characterised by intestinal epithelial injury and inflammation. Current research shows that in addition to traditional anti-inflammatory therapy, resolution of inflammation and repair of the epithelial barrier are key biological requirements in combating IBD. Resolution mediators include endogenous lipids that are generated during inflammation, e.g., lipoxins, resolvins, protectins, maresins; and proteins such as Annexin A1 (ANXA1). Nanoparticles can specifically deliver these potent inflammation resolving mediators in a spatiotemporal manner to IBD lesions, effectively resolve inflammation, and promote a return to homoeostasis with minimal collateral damage. We discuss these exciting and timely concepts in this review.
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Affiliation(s)
- Runxin Xu
- Imperial College London, Department of Chemistry, Molecular Sciences Research Hub, United Kingdom
| | - Marie-Christin Weber
- Technical University of Munich, School of Medicine, Klinikum rechts der Isar, Department of Surgery, Germany
| | - Xinkai Hu
- Imperial College London, Department of Chemistry, Molecular Sciences Research Hub, United Kingdom
| | - Philipp-Alexander Neumann
- Technical University of Munich, School of Medicine, Klinikum rechts der Isar, Department of Surgery, Germany.
| | - Nazila Kamaly
- Imperial College London, Department of Chemistry, Molecular Sciences Research Hub, United Kingdom.
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9
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Varum F, Thorne H, Bravo R, Gilgen D, Hartig C, Nicolas G, Wild D, Liakoni E, Haschke M. Targeted colonic release formulations of mesalazine – A clinical pharmaco-scintigraphic proof-of-concept study in healthy subjects and patients with mildly active ulcerative colitis. Int J Pharm 2022; 625:122055. [DOI: 10.1016/j.ijpharm.2022.122055] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Revised: 07/22/2022] [Accepted: 07/23/2022] [Indexed: 01/13/2023]
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10
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Awad A, Madla CM, McCoubrey LE, Ferraro F, Gavins FK, Buanz A, Gaisford S, Orlu M, Siepmann F, Siepmann J, Basit AW. Clinical translation of advanced colonic drug delivery technologies. Adv Drug Deliv Rev 2022; 181:114076. [PMID: 34890739 DOI: 10.1016/j.addr.2021.114076] [Citation(s) in RCA: 55] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 10/26/2021] [Accepted: 12/02/2021] [Indexed: 12/12/2022]
Abstract
Targeted drug delivery to the colon offers a myriad of benefits, including treatment of local diseases, direct access to unique therapeutic targets and the potential for increasing systemic drug bioavailability and efficacy. Although a range of traditional colonic delivery technologies are available, these systems exhibit inconsistent drug release due to physiological variability between and within individuals, which may be further exacerbated by underlying disease states. In recent years, significant translational and commercial advances have been made with the introduction of new technologies that incorporate independent multi-stimuli release mechanisms (pH and/or microbiota-dependent release). Harnessing these advanced technologies offers new possibilities for drug delivery via the colon, including the delivery of biopharmaceuticals, vaccines, nutrients, and microbiome therapeutics for the treatment of both local and systemic diseases. This review details the latest advances in colonic drug delivery, with an emphasis on emerging therapeutic opportunities and clinical technology translation.
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11
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García MA, Varum F, Al-Gousous J, Hofmann M, Page S, Langguth P. In Vitro Methodologies for Evaluating Colon-Targeted Pharmaceutical Products and Industry Perspectives for Their Applications. Pharmaceutics 2022; 14:pharmaceutics14020291. [PMID: 35214024 PMCID: PMC8876830 DOI: 10.3390/pharmaceutics14020291] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 01/22/2022] [Accepted: 01/24/2022] [Indexed: 02/04/2023] Open
Abstract
Several locally acting colon-targeted products to treat colonic diseases have been recently developed and marketed, taking advantage of gastrointestinal physiology to target delivery. Main mechanisms involve pH-dependent, time-controlled and/or enzymatic-triggered release. With site of action located before systemic circulation and troublesome colonic sampling, there is room for the introduction of meaningful in vitro methods for development, quality control (QC) and regulatory applications of these formulations. A one-size-fits-all method seems unrealistic, as the selection of experimental conditions should resemble the physiological features exploited to trigger the release. This article reviews the state of the art for bio-predictive dissolution testing of colon-targeted products. Compendial methods overlook physiological aspects, such as buffer molarity and fluid composition. These are critical for pH-dependent products and time-controlled systems containing ionizable drugs. Moreover, meaningful methods for enzymatic-triggered products including either bacteria or enzymes are completely ignored by pharmacopeias. Bio-predictive testing may accelerate the development of successful products, although this may require complex methodologies. However, for high-throughput routine testing (e.g., QC), simplified methods can be used where balance is struck between simplicity, robustness and transferability on one side and bio-predictivity on the other. Ultimately, bio-predictive methods can occupy a special niche in terms of supplementing plasma concentration data for regulatory approval.
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Affiliation(s)
- Mauricio A. García
- Department of Biopharmaceutics and Pharmaceutical Technology, Johannes Gutenberg University Mainz, 55099 Mainz, Germany; (M.A.G.); (J.A.-G.)
| | - Felipe Varum
- Pharmaceutical Research and Development, F. Hoffmann-La Roche Ltd., 4070 Basel, Switzerland; (F.V.); (M.H.); (S.P.)
| | - Jozef Al-Gousous
- Department of Biopharmaceutics and Pharmaceutical Technology, Johannes Gutenberg University Mainz, 55099 Mainz, Germany; (M.A.G.); (J.A.-G.)
- Department of Pharmaceutical Sciences, University of Michigan, 428 Church Street, Ann Arbor, MI 48109, USA
| | - Michael Hofmann
- Pharmaceutical Research and Development, F. Hoffmann-La Roche Ltd., 4070 Basel, Switzerland; (F.V.); (M.H.); (S.P.)
| | - Susanne Page
- Pharmaceutical Research and Development, F. Hoffmann-La Roche Ltd., 4070 Basel, Switzerland; (F.V.); (M.H.); (S.P.)
| | - Peter Langguth
- Department of Biopharmaceutics and Pharmaceutical Technology, Johannes Gutenberg University Mainz, 55099 Mainz, Germany; (M.A.G.); (J.A.-G.)
- Correspondence:
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12
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Oral colon delivery platform based on a novel combination approach: Design concept and preliminary evaluation. J Drug Deliv Sci Technol 2021. [DOI: 10.1016/j.jddst.2021.102919] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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13
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Development and In Vitro Evaluation of a Novel Pulsatile Drug Delivery System Containing Dexketoprofen Trometamol. J Pharm Innov 2021. [DOI: 10.1007/s12247-020-09452-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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14
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Tran PHL, Tran TTD. Mucoadhesive Formulation Designs for Oral Controlled Drug Release at the Colon. Curr Pharm Des 2021; 27:540-547. [PMID: 32940169 DOI: 10.2174/1381612826666200917143816] [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] [Received: 03/06/2020] [Accepted: 07/17/2020] [Indexed: 11/22/2022]
Abstract
Mucoadhesive formulations have been demonstrated to result in efficient drug delivery systems with advantages over existing systems such as increased local retention and sustained drug release via adhesiveness to mucosal tissues. The controlled release of colon-targeted, orally administered drugs has recently attracted a number of studies investigating mucoadhesive systems. Consequently, substantial designs, from mucoadhesive cores to shells of particles, have been studied with promising applications. This review will provide an overview of specific strategies for developing mucoadhesive systems for colon-targeted oral delivery with controlled drug release, including mucoadhesive matrices, cross-linked mucoadhesive microparticles, coatings and mucoadhesive nanoparticles. The understanding of the basic principle of these designs and advanced formulations throughout will lead to the development of products with efficient drug delivery at the colon for therapies for different diseases.
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Affiliation(s)
- Phuong H L Tran
- Deakin University, School of Medicine, IMPACT, Institute for Innovation in Physical and Mental Health and Clinical Translation, Geelong, Australia
| | - Thao T D Tran
- Department for Management of Science and Technology Development, Ton Duc Thang University, Ho Chi Minh City, Vietnam
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15
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Measurement of the Intestinal pH in Mice under Various Conditions Reveals Alkalization Induced by Antibiotics. Antibiotics (Basel) 2021; 10:antibiotics10020180. [PMID: 33670214 PMCID: PMC7916911 DOI: 10.3390/antibiotics10020180] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 02/04/2021] [Accepted: 02/08/2021] [Indexed: 12/17/2022] Open
Abstract
The intestinal pH can greatly influence the stability and absorption of oral drugs. Therefore, knowledge of intestinal pH is necessary to understand the conditions for drug delivery. This has previously been measured in humans and rats. However, information on intestinal pH in mice is insufficient despite these animals being used often in preclinical testing. In this study, 72 female ICR mice housed in SPF (specific pathogen-free) conditions were separated into nine groups to determine the intestinal pH under conditions that might cause pH fluctuations, including high-protein diet, ageing, proton pump inhibitor (PPI) treatment, several antibiotic treatment regimens and germ-free mice. pH was measured in samples collected from the ileum, cecum and colon, and compared to control animals. An electrode, 3 mm in diameter, enabled accurate pH measurements with a small amount of gastrointestinal content. Consequently, the pH values in the cecum and colon were increased by high-protein diet, and the pH in the ileum was decreased by PPI. Drastic alkalization was induced by antibiotics, especially in the cecum and colon. The alkalized pH values in germ-free mice suggested that the reduction in the intestinal bacteria caused by antibiotics led to alkalization. Alkalization of the intestinal pH caused by antibiotic treatment was verified in mice. We need further investigations in clinical settings to check whether the same phenomena occur in patients.
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Arévalo-Pérez R, Maderuelo C, Lanao JM. Recent advances in colon drug delivery systems. J Control Release 2020; 327:703-724. [DOI: 10.1016/j.jconrel.2020.09.026] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 09/11/2020] [Accepted: 09/12/2020] [Indexed: 12/12/2022]
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Broesder A, Woerdenbag HJ, Prins GH, Nguyen DN, Frijlink HW, Hinrichs WLJ. pH-dependent ileocolonic drug delivery, part I: in vitro and clinical evaluation of novel systems. Drug Discov Today 2020; 25:1362-1373. [PMID: 32554060 DOI: 10.1016/j.drudis.2020.06.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Revised: 05/18/2020] [Accepted: 06/08/2020] [Indexed: 02/07/2023]
Abstract
After the pH dependency of novel pH-dependent ileocolonic drug delivery systems is confirmed in vitro, their performance should be evaluated in human volunteers.
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Affiliation(s)
- Annemarie Broesder
- University of Groningen, Groningen Research Institute of Pharmacy, Department of Pharmaceutical Technology and Biopharmacy, Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Herman J Woerdenbag
- University of Groningen, Groningen Research Institute of Pharmacy, Department of Pharmaceutical Technology and Biopharmacy, Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Grietje H Prins
- University of Groningen, Groningen Research Institute of Pharmacy, Department of Pharmaceutical Technology and Biopharmacy, Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Duong N Nguyen
- University of Groningen, Groningen Research Institute of Pharmacy, Department of Pharmaceutical Technology and Biopharmacy, Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Henderik W Frijlink
- University of Groningen, Groningen Research Institute of Pharmacy, Department of Pharmaceutical Technology and Biopharmacy, Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Wouter L J Hinrichs
- University of Groningen, Groningen Research Institute of Pharmacy, Department of Pharmaceutical Technology and Biopharmacy, Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands.
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Hua S. Advances in Oral Drug Delivery for Regional Targeting in the Gastrointestinal Tract - Influence of Physiological, Pathophysiological and Pharmaceutical Factors. Front Pharmacol 2020; 11:524. [PMID: 32425781 PMCID: PMC7212533 DOI: 10.3389/fphar.2020.00524] [Citation(s) in RCA: 177] [Impact Index Per Article: 44.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Accepted: 04/03/2020] [Indexed: 12/22/2022] Open
Abstract
The oral route is by far the most common route of drug administration in the gastrointestinal tract and can be used for both systemic drug delivery and for treating local gastrointestinal diseases. It is the most preferred route by patients, due to its advantages, such as ease of use, non-invasiveness, and convenience for self-administration. Formulations can also be designed to enhance drug delivery to specific regions in the upper or lower gastrointestinal tract. Despite the clear advantages offered by the oral route, drug delivery can be challenging as the human gastrointestinal tract is complex and displays a number of physiological barriers that affect drug delivery. Among these challenges are poor drug stability, poor drug solubility, and low drug permeability across the mucosal barriers. Attempts to overcome these issues have focused on improved understanding of the physiology of the gastrointestinal tract in both healthy and diseased states. Innovative pharmaceutical approaches have also been explored to improve regional drug targeting in the gastrointestinal tract, including nanoparticulate formulations. This review will discuss the physiological, pathophysiological, and pharmaceutical considerations influencing drug delivery for the oral route of administration, as well as the conventional and novel drug delivery approaches. The translational challenges and development aspects of novel formulations will also be addressed.
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Affiliation(s)
- Susan Hua
- Therapeutic Targeting Research Group, School of Biomedical Sciences and Pharmacy, University of Newcastle, Callaghan, NSW, Australia
- Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
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Varum F, Freire AC, Fadda HM, Bravo R, Basit AW. A dual pH and microbiota-triggered coating (Phloral™) for fail-safe colonic drug release. Int J Pharm 2020; 583:119379. [PMID: 32360546 DOI: 10.1016/j.ijpharm.2020.119379] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 04/23/2020] [Accepted: 04/24/2020] [Indexed: 02/07/2023]
Abstract
Enteric-coated dosage forms are widely used for targeting the ileo-colonic region of the gastrointestinal (GI) tract. However, accurate targeting is challenging due to intra- and inter-individual variability in intestinal paramaters such as fluid pH and transit times, which occasionally lead to enteric coating failure. As such, a unique coating technology (Phloral™), which combines two independent release mechanisms - a pH trigger (Eudragit® S; dissolving at pH 7) and a microbiota-trigger (resistant starch), has been developed, offering a fail-safe approach to colonic targeting. Here, we demonstrate that the inclusion of resistant starch in the coating does not affect the pH mediated drug release mechanism or the robustness of the coating in the upper GI tract. In order to make the resistant starch more digestible by bacterial enzymes, heat treatment of the starch in the presence of butanol was required to allow disruption of the crystalline structure of the starch granules. Under challenging conditions of limited exposure to high pH in the distal small intestine fluid and rapid transit through the colon, often observed in patients with inflammatory bowel disease, particularly in ulcerative colitis, this dual-trigger pH-enzymatic coating offers a revolutionary approach for site specific drug delivery to the large intestine.
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Affiliation(s)
- Felipe Varum
- Tillotts Pharma AG, Rheinfelden, Switzerland; UCL School of Pharmacy, University College London, London, United Kingdom
| | | | - Hala M Fadda
- UCL School of Pharmacy, University College London, London, United Kingdom
| | | | - Abdul W Basit
- UCL School of Pharmacy, University College London, London, United Kingdom.
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Varum F, Freire AC, Bravo R, Basit AW. OPTICORE™, an innovative and accurate colonic targeting technology. Int J Pharm 2020; 583:119372. [PMID: 32344022 DOI: 10.1016/j.ijpharm.2020.119372] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 04/21/2020] [Accepted: 04/22/2020] [Indexed: 02/08/2023]
Abstract
Inflammatory bowel disease (IBD) is a debilitating condition, estimated to affect 7 million people worldwide. Current IBD treatment strategies are substandard, relying on colonic targeting using the pH gradient along the gastrointestinal tract. Here, we describe an innovative colonic targeting concept, OPTICORE™ coating technology. OPTICORE™ combines two release triggers (pH and enzyme: Phloral™) in the outer layer, with an inner layer promoting a release acceleration mechanism (Duocoat™). The technology comprises an inner layer of partially neutralized enteric polymer with a buffer agent and an outer layer of a mixture of Eudragit® S and resistant starch. 5-aminosalicylic acid (5-ASA) tablets were coated with different inner layers, where the type of polymer, buffer salt concentration and pH of neutralization, were investigated for drug release acceleration. Buffer capacity of polymethacrylate neutralized polymer significantly contributes to the buffer capacity of the inner layer formulation, while buffer salt concentration is a major contributor to dispersion buffer capacity in the case of hypromellose enteric polymer formulations. An interplay between buffer capacity, pH and ionic strength contributes to an accelerated drug release. Resistant starch does not impact the enteric properties but allows for drug release mediated by colonic bacterial enzymes, ensuring complete drug release. Therefore, OPTICORE™ technology is designed to offer significant advantages over standard enteric coatings, particularly allowing for more accurate colonic drug delivery in ulcerative colitis patients.
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Affiliation(s)
- Felipe Varum
- Tillotts Pharma AG, Baslerstrasse 15, CH-4310 Rheinfelden, Switzerland; UCL School of Pharmacy, University College London, Brunswick Square, WC1N 1AX London, UK.
| | - Ana Cristina Freire
- UCL School of Pharmacy, University College London, Brunswick Square, WC1N 1AX London, UK
| | - Roberto Bravo
- Tillotts Pharma AG, Baslerstrasse 15, CH-4310 Rheinfelden, Switzerland
| | - Abdul W Basit
- UCL School of Pharmacy, University College London, Brunswick Square, WC1N 1AX London, UK
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21
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Casati F, Melocchi A, Moutaharrik S, Uboldi M, Foppoli A, Maroni A, Zema L, Neut C, Siepmann F, Siepmann J, Gazzaniga A. Injection Molded Capsules for Colon Delivery Combining Time-Controlled and Enzyme-Triggered Approaches. Int J Mol Sci 2020; 21:ijms21061917. [PMID: 32168895 PMCID: PMC7139580 DOI: 10.3390/ijms21061917] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 03/09/2020] [Accepted: 03/10/2020] [Indexed: 12/23/2022] Open
Abstract
A new type of colon targeting system is presented, combining time-controlled and enzyme-triggered approaches. Empty capsule shells were prepared by injection molding of blends of a high-amylose starch and hydroxypropyl methylcellulose (HPMC) of different chain lengths. The dissolution/erosion of the HPMC network assures a time-controlled drug release, i.e., drug release starts upon sufficient shell swelling/dissolution/erosion. In addition, the presence of high-amylose starch ensures enzyme-triggered drug release. Once the colon is reached, the local highly concentrated bacterial enzymes effectively degrade this polysaccharide, resulting in accelerated drug release. Importantly, the concentration of bacterial enzymes is much lower in the upper gastrointestinal tract, thus enabling site-specific drug delivery. The proposed capsules were filled with acetaminophen and exposed to several aqueous media, simulating the contents of the gastrointestinal tract using different experimental setups. Importantly, drug release was pulsatile and occurred much faster in the presence of fecal samples from patients. The respective lag times were reduced and the release rates increased once the drug started to be released. It can be expected that variations in the device design (e.g., polymer blend ratio, capsule shell geometry and thickness) allow for a large variety of possible colon targeting release profiles.
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Affiliation(s)
- Federica Casati
- Sezione di Tecnologia e Legislazione Farmaceutiche “Maria Edvige Sangalli”, Dipartimento di Scienze Farmaceutiche, Università degli Studi di Milano, 20133 Milano, Italy; (F.C.); (A.M.); (S.M.); (M.U.); (A.F.); (A.M.); (A.G.)
- IMA S.p.a., Ozzana dell’Emilia, 40064 Bologna, Italy
| | - Alice Melocchi
- Sezione di Tecnologia e Legislazione Farmaceutiche “Maria Edvige Sangalli”, Dipartimento di Scienze Farmaceutiche, Università degli Studi di Milano, 20133 Milano, Italy; (F.C.); (A.M.); (S.M.); (M.U.); (A.F.); (A.M.); (A.G.)
| | - Saliha Moutaharrik
- Sezione di Tecnologia e Legislazione Farmaceutiche “Maria Edvige Sangalli”, Dipartimento di Scienze Farmaceutiche, Università degli Studi di Milano, 20133 Milano, Italy; (F.C.); (A.M.); (S.M.); (M.U.); (A.F.); (A.M.); (A.G.)
| | - Marco Uboldi
- Sezione di Tecnologia e Legislazione Farmaceutiche “Maria Edvige Sangalli”, Dipartimento di Scienze Farmaceutiche, Università degli Studi di Milano, 20133 Milano, Italy; (F.C.); (A.M.); (S.M.); (M.U.); (A.F.); (A.M.); (A.G.)
| | - Anastasia Foppoli
- Sezione di Tecnologia e Legislazione Farmaceutiche “Maria Edvige Sangalli”, Dipartimento di Scienze Farmaceutiche, Università degli Studi di Milano, 20133 Milano, Italy; (F.C.); (A.M.); (S.M.); (M.U.); (A.F.); (A.M.); (A.G.)
| | - Alessandra Maroni
- Sezione di Tecnologia e Legislazione Farmaceutiche “Maria Edvige Sangalli”, Dipartimento di Scienze Farmaceutiche, Università degli Studi di Milano, 20133 Milano, Italy; (F.C.); (A.M.); (S.M.); (M.U.); (A.F.); (A.M.); (A.G.)
| | - Lucia Zema
- Sezione di Tecnologia e Legislazione Farmaceutiche “Maria Edvige Sangalli”, Dipartimento di Scienze Farmaceutiche, Università degli Studi di Milano, 20133 Milano, Italy; (F.C.); (A.M.); (S.M.); (M.U.); (A.F.); (A.M.); (A.G.)
- Correspondence: ; Tel.: +39-02-5032-4654
| | - Christel Neut
- University of Lille, Inserm, CHU Lille, UMR1286, F-59000 Lille, France;
| | - Florence Siepmann
- Université of Lille, Inserm, CHU Lille, U1008, F-59000 Lille, France; (F.S.); (J.S.)
| | - Juergen Siepmann
- Université of Lille, Inserm, CHU Lille, U1008, F-59000 Lille, France; (F.S.); (J.S.)
| | - Andrea Gazzaniga
- Sezione di Tecnologia e Legislazione Farmaceutiche “Maria Edvige Sangalli”, Dipartimento di Scienze Farmaceutiche, Università degli Studi di Milano, 20133 Milano, Italy; (F.C.); (A.M.); (S.M.); (M.U.); (A.F.); (A.M.); (A.G.)
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Barros PD, Dias IFT, Zanin GD, Bunhak ÉJ. Development and evaluation of dapsone tablets coated for specific colon release. Drug Dev Ind Pharm 2020; 46:246-252. [PMID: 31951762 DOI: 10.1080/03639045.2020.1716375] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Objective: Drug release systems based on colonic microbiota have been explored with the use of polysaccharides, which are biodegradable. In order to modulate the release into the colon, dapsone tablets were developed, coated with Surelease® and chondroitin sulfate (SC).Methods: The formulation was developed using the wet granulation method, in the form of 9-millimetre circular tablets. The coating was applied in a perforated basin-type coating using different proportions of Surelease® and chondroitin sulfate. The tablets were assessed according to the criteria of mean weight, hardness, and friability. The dissolution test was performed in the dissolver IV apparatus, in media simulating the gastrointestinal system environments (pH 1.2-pH 6.0 and pH 7.2) for 420 min. The results were analyzed by statistical analysis and factorial design.Results: The results of mean weight, hardness, and friability met the pharmacopeial specifications. In the dissolution test, the results obtained demonstrated that Surelease® is able to offer effective protection to the drug, releasing minimum rates when used at 6% or 10% of the tablet's weight gain. The experiments showed that the drug was not able to spread through the coatings manufactured exclusively with Surelease® or even when SC was incorporated in different proportions. Only in the formulation where SC was included in the highest proportion (10%), and the weight gain of the tablet was lower (6%), the release of dapsone increased, reaching 9.5% of drug released. Through factorial planning, it was observed that the drug release rate increases when the weight gain of the tablet remains at the lower level (6%), while the amount of polysaccharide is increased (90:10).Conclusions: The data indicate that the proportion of polysaccharide for ethyl cellulose in the film and the thickness of the coating are the key parameters in controlling the release of the drug from the system.
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Advances in colon-targeted nano-drug delivery systems: challenges and solutions. Arch Pharm Res 2020; 43:153-169. [DOI: 10.1007/s12272-020-01219-0] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Accepted: 01/20/2020] [Indexed: 12/16/2022]
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25
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Hameed HA, Khan S, Shahid M, Ullah R, Bari A, Ali SS, Hussain Z, Sohail M, Khan SU, Htar TT. Engineering of Naproxen Loaded Polymer Hybrid Enteric Microspheres for Modified Release Tablets: Development, Characterization, in silico Modelling and in vivo Evaluation. Drug Des Devel Ther 2020; 14:27-41. [PMID: 32021089 PMCID: PMC6954845 DOI: 10.2147/dddt.s232111] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Accepted: 12/13/2019] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND Naproxen (NP) is a non-steroidal anti-inflammatory drug with poor aqueous solubility and low oral bioavailability, which may lead to therapeutic failure. NP causes crucial GIT irritation, bleeding, and peptic and duodenal ulcers. PURPOSE OF THE STUDY This study aimed to engineer and characterize polymer hybrid enteric microspheres using an integrated (experimental and molecular modelling) approach with further development to solid dosage form with modified drug release kinetics and improved bioavailability. MATERIALS AND METHODS NP loaded polymer hybrid enteric microspheres (PHE-Ms) were fabricated by using a modified solvent evaporation technique coupled with molecular modelling (MM) approach. The PHE-Ms were characterized by particle size, distribution, morphology, crystallinity, EE, drug-polymer compatibility, and DSC. The optimized NP loaded PHE-Ms were further subjected to downstream procedures including tablet dosage form development, stability studies and comparative in vitro-in vivo evaluation. RESULTS The hydrophobic polymer EUD-L100 and hydrophilic polymer HPMC-E5 delayed and modified drug release at intestinal pH while imparting retardation of NP release at gastric pH to diminish the gastric side effects. The crystallinity of the NP loaded PHE-Ms was established through DSC and P (XRD). The particle size for the developed formulations of PEH-Ms (M1-M5) was in the range from 29.06 ±7.3-74.31 ± 17.7 μm with Span index values of 0.491-0.69, respectively. The produced NP hybrid microspheres demonstrated retarded drug release at pH 1.2 and improved dissolution at pH 6.8. The in vitro drug release patterns were fitted to various release kinetic models and the best-followed model was the Higuchi model with a release exponent "n" value > 0.5. Stability studies at different storage conditions confirmed stability of the NP loaded PHE-Ms based tablets (P<0.05). The molecular modelling (MM) study resulted in adequate binding energy of co-polymer complex SLS-Eudragit-HPMC-Naproxen (-3.9 kcal/mol). In contrast to the NP (unprocessed) and marketed formulations, a significant increase in the Cmax of PHE-MT1 (44.41±4.43) was observed. CONCLUSION The current study concludes that developing NP loaded PHE-Ms based tablets could effectively reduce GIT consequences with restored therapeutic effects. The modified release pattern could improve the dissolution rate and enhancement of oral bioavailability. The MM study strengthens the polymer-drug relationship in microspheres.
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Affiliation(s)
- Hajra Afeera Hameed
- Department of Pharmacy, University of Malakand, Chakdara, Khyber Pakhtunkhwa18800, Pakistan
| | - Shahzeb Khan
- Department of Pharmacy, University of Malakand, Chakdara, Khyber Pakhtunkhwa18800, Pakistan
- Discipline of Pharmaceutical Sciences, School of Health Sciences, University of KwaZulu-Natal, Durban4000, South Africa
- Division of Molecular Pharmaceutics and Drug Delivery, College of Pharmacy, The University of Texas at Austin, Austin, TX, USA
| | - Muhammad Shahid
- Department of Pharmacy, Sarhad University of Science and Information Technology, Peshawar, Khyber Pakhtunkhwa, Pakistan
| | - Riaz Ullah
- Medicinal, Aromatic & Poisonous Plants Research Center (MAPPRC), College of Pharmacy, King Saud University, Riyadh11451, Saudi Arabia
| | - Ahmed Bari
- Central Laboratory, College of Pharmacy, King Saud University, Riyadh11451, Saudi Arabia
| | - Syed Saeed Ali
- Central Laboratory, College of Pharmacy, King Saud University, Riyadh11451, Saudi Arabia
| | - Zahid Hussain
- Department of Pharmaceutics and Pharmaceutical Technology, College of Pharmacy, University of Sharjah, Sharjah27272, United Arab Emirates
| | - Muhammad Sohail
- Department of Pharmacy, COMSATS University Islamabad, Abbottabad22060, Pakistan
| | - Shafi Ullah Khan
- School of Pharmacy, Monash University Malaysia, Bandar Sunway, Subang Jaya47500, Malaysia
| | - Thet Thet Htar
- School of Pharmacy, Monash University Malaysia, Bandar Sunway, Subang Jaya47500, Malaysia
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26
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Hossian AKMN, Mackenzie GG, Mattheolabakis G. miRNAs in gastrointestinal diseases: can we effectively deliver RNA-based therapeutics orally? Nanomedicine (Lond) 2019; 14:2873-2889. [PMID: 31735124 DOI: 10.2217/nnm-2019-0180] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Nucleic acid-based therapeutics are evaluated for their potential of treating a plethora of diseases, including cancer and inflammation. Short nucleic acids, such as miRNAs, have emerged as versatile regulators for gene expression and are studied for therapeutic purposes. However, their inherent instability in vivo following enteral and parenteral administration has prompted the development of novel methodologies for their delivery. Although research on the oral delivery of siRNAs is progressing, with the development and utilization of promising carrier-based methodologies for the treatment of a plethora of gastrointestinal diseases, research on miRNA-based oral therapeutics is lagging behind. In this review, we present the potential role of miRNAs in diseases of the GI tract, and analyze current research and the cardinal features of the novel carrier systems used for nucleic acid oral delivery that can be expanded for oral miRNA administration.
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Affiliation(s)
- A K M Nawshad Hossian
- School of Basic Pharmaceutical & Toxicological Sciences, College of Pharmacy, University of Louisiana Monroe, Monroe, LA 71201, USA
| | | | - George Mattheolabakis
- School of Basic Pharmaceutical & Toxicological Sciences, College of Pharmacy, University of Louisiana Monroe, Monroe, LA 71201, USA
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In vivo evaluation of targeted delivery of biological agents using barium sulfate. Int J Pharm 2019; 572:118801. [PMID: 31678529 DOI: 10.1016/j.ijpharm.2019.118801] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Revised: 10/10/2019] [Accepted: 10/13/2019] [Indexed: 12/11/2022]
Abstract
This study was aimed to monitor the transit through the intestine by X-ray imaging using barium sulfate (BS) as tracer. The in vitro features of monolithic tablets were correlated with their in vivo behavior in order to provide a tool for the development of targeted formulations containing macromolecular bioactive agents. The impact of BS on various matrices (neutral, ionic) was studied in simulated fluids using the disintegration time (DT) as main parameter. Dry tablets were characterized by spectroscopic methods (X-ray diffraction and Infra-Red) and scanning electron microscopy (SEM). The selected formulations were followed in a beagle dog model. The in vivo and in vitro DT of tablets formulated with BS were compared. Results: anionic excipients carboxymethylcellulose (CMC) and carboxymethylstarch (CMS) protected the active ingredient from the gastric acidity, ensuring its targeted delivery in the intestine. The SEM analysis, before and after transit in simulated fluids, showed that BS remained in the tablets allowing their good follow-up in vivo. The incorporation of 30% protein in tablets with 40% BS had no impact on their behavior. In conclusion, BS and X-ray imagery could be a good alternative to scintigraphy for development of targeted formulations containing high molecular weight bioactive agents.
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28
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O'Driscoll CM, Bernkop-Schnürch A, Friedl JD, Préat V, Jannin V. Oral delivery of non-viral nucleic acid-based therapeutics - do we have the guts for this? Eur J Pharm Sci 2019; 133:190-204. [PMID: 30946964 DOI: 10.1016/j.ejps.2019.03.027] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Revised: 03/25/2019] [Accepted: 03/28/2019] [Indexed: 12/22/2022]
Abstract
Gene therapy with RNA and pDNA-based drugs is limited by poor enzymatic stability and poor cellular permeation. The delivery of nucleic acids, in particular by the oral route, remains a major hurdle. This review will focus on the barriers to the oral delivery of nucleic acids and the strategies, in particular formulation strategies, which have been developed to overcome these barriers. Due to their very low oral bioavailability, the most obvious and most investigated biomedical applications for their oral delivery are related to the local treatment of inflammatory bowel diseases and colorectal cancers. Preclinical data but not yet clinical studies support the potential use of the oral route for the local delivery of formulated nucleic acid-based drugs.
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Affiliation(s)
| | - Andreas Bernkop-Schnürch
- Department of Pharmaceutical Technology, Institute of Pharmacy, University of Innsbruck, Innrain 80/82, 6020 Innsbruck, Austria.
| | - Julian D Friedl
- Department of Pharmaceutical Technology, Institute of Pharmacy, University of Innsbruck, Innrain 80/82, 6020 Innsbruck, Austria
| | - Véronique Préat
- Universite catholique de Louvain, Louvain Drug Research Institute, Advanced Drug Delivery and Biomaterials, Avenue Mounier, 73 bte B1.73.12, 1200 Brussels, Belgium.
| | - Vincent Jannin
- Gattefossé SAS, 36 chemin de Genas, 69804 Saint-Priest cedex, France.
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29
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Zeeshan M, Ali H, Khan S, Khan SA, Weigmann B. Advances in orally-delivered pH-sensitive nanocarrier systems; an optimistic approach for the treatment of inflammatory bowel disease. Int J Pharm 2019; 558:201-214. [DOI: 10.1016/j.ijpharm.2018.12.074] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2018] [Revised: 12/24/2018] [Accepted: 12/27/2018] [Indexed: 02/07/2023]
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30
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Wahlgren M, Axenstrand M, Håkansson Å, Marefati A, Lomstein Pedersen B. In Vitro Methods to Study Colon Release: State of the Art and An Outlook on New Strategies for Better In-Vitro Biorelevant Release Media. Pharmaceutics 2019; 11:E95. [PMID: 30813323 PMCID: PMC6410320 DOI: 10.3390/pharmaceutics11020095] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Revised: 02/18/2019] [Accepted: 02/21/2019] [Indexed: 12/19/2022] Open
Abstract
The primary focus of this review is a discussion regarding in vitro media for colon release, but we also give a brief overview of colon delivery and the colon microbiota as a baseline for this discussion. The large intestine is colonized by a vast number of bacteria, approximately 1012 per gram of intestinal content. The microbial community in the colon is complex and there is still much that is unknown about its composition and the activity of the microbiome. However, it is evident that this complex microbiota will affect the release from oral formulations targeting the colon. This includes the release of active drug substances, food supplements, and live microorganisms, such as probiotic bacteria and bacteria used for microbiota transplantations. Currently, there are no standardized colon release media, but researchers employ in vitro models representing the colon ranging from reasonable simple systems with adjusted pH with or without key enzymes to the use of fecal samples. In this review, we present the pros and cons for different existing in vitro models. Furthermore, we summarize the current knowledge of the colonic microbiota composition which is of importance to the fermentation capacity of carbohydrates and suggest a strategy to choose bacteria for a new more standardized in vitro dissolution medium for the colon.
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Affiliation(s)
- Marie Wahlgren
- Department of Food technology engineering and nutrition, Lund University, P.O. Box 124, 221 00 Lund, Sweden.
| | - Magdalena Axenstrand
- Department of Food technology engineering and nutrition, Lund University, P.O. Box 124, 221 00 Lund, Sweden.
| | - Åsa Håkansson
- Department of Food technology engineering and nutrition, Lund University, P.O. Box 124, 221 00 Lund, Sweden.
| | - Ali Marefati
- Department of Food technology engineering and nutrition, Lund University, P.O. Box 124, 221 00 Lund, Sweden.
| | - Betty Lomstein Pedersen
- Ferring International PharmaScience Center (IPC), Kay Fiskers Plads 11, 2300 Copenhagen, Denmark.
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Date AA, Halpert G, Babu T, Ortiz J, Kanvinde P, Dimitrion P, Narayan J, Zierden H, Betageri K, Musmanno O, Wiegand H, Huang X, Gumber S, Hanes J, Ensign LM. Mucus-penetrating budesonide nanosuspension enema for local treatment of inflammatory bowel disease. Biomaterials 2018; 185:97-105. [PMID: 30236840 PMCID: PMC6193453 DOI: 10.1016/j.biomaterials.2018.09.005] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Revised: 08/17/2018] [Accepted: 09/04/2018] [Indexed: 02/08/2023]
Abstract
Inflammatory bowel disease (IBD) is a chronic inflammatory gastrointestinal disorder that affects more than 1 million individuals in the USA. Local therapy with enema formulations, such as micronized budesonide (Entocort®), is a common strategy for treating patients with distally active IBD. However, we hypothesize that micronized particulates are too large to effectively penetrate colorectal mucus, limiting the extent of drug delivery to affected tissues prior to clearance. Here, we describe the development of a budesonide nanosuspension (NS) with the appropriate surface coating and size to enhance penetration of colorectal mucus and ulcerated colorectal tissues. We demonstrate that model fluorescent polystyrene (PS) particles ∼200 nm in size with a muco-inert Pluronic F127 coating provide enhanced mucosal distribution and tissue penetration in mice with trinitrobenzenesulfonic acid (TNBS)-induced IBD compared to model 2 μm PS particles coated with polyvinylpyrollidone (PVP), the stabilizer used in the clinical micronized budesonide formulation. We then used a wet-milling process to develop a budesonide NS formulation with a muco-inert Pluronic F127 coating (particle size ∼230 nm), as well as a budesonide microsuspension (MS) stabilized with PVP (particle size ∼2 μm). Using an acute TNBS mouse model of IBD, we show that daily budesonide NS enema treatment resulted in a significant reduction in the macroscopic (decreased colon weight) and microscopic (histology score) symptoms of IBD compared to untreated controls or mice treated daily with the budesonide MS enema. Further, we show that the budesonide NS enema treated mice had a significantly reduced number of inflammatory macrophages and IL-β producing CD11b + cells in colon tissue compared to untreated controls or mice treated with the budesonide MS enema. We conclude that the nano-size and muco-inert coating allowed for enhanced local delivery of budesonide, and thus, a more significant impact on local colorectal tissue inflammation.
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Affiliation(s)
- Abhijit A Date
- The Center for Nanomedicine, The Wilmer Eye Institute, Johns Hopkins University School of Medicine, 400 N Broadway, Baltimore, MD 21231, USA; Department of Ophthalmology, The Wilmer Eye Institute, Johns Hopkins University School of Medicine, 400 N. Broadway, Baltimore, MD 21231, USA
| | - Gilad Halpert
- The Center for Nanomedicine, The Wilmer Eye Institute, Johns Hopkins University School of Medicine, 400 N Broadway, Baltimore, MD 21231, USA; Department of Ophthalmology, The Wilmer Eye Institute, Johns Hopkins University School of Medicine, 400 N. Broadway, Baltimore, MD 21231, USA
| | - Taarika Babu
- The Center for Nanomedicine, The Wilmer Eye Institute, Johns Hopkins University School of Medicine, 400 N Broadway, Baltimore, MD 21231, USA; Department of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Jairo Ortiz
- The Center for Nanomedicine, The Wilmer Eye Institute, Johns Hopkins University School of Medicine, 400 N Broadway, Baltimore, MD 21231, USA; Department of Ophthalmology, The Wilmer Eye Institute, Johns Hopkins University School of Medicine, 400 N. Broadway, Baltimore, MD 21231, USA
| | - Pranjali Kanvinde
- The Center for Nanomedicine, The Wilmer Eye Institute, Johns Hopkins University School of Medicine, 400 N Broadway, Baltimore, MD 21231, USA
| | - Peter Dimitrion
- The Center for Nanomedicine, The Wilmer Eye Institute, Johns Hopkins University School of Medicine, 400 N Broadway, Baltimore, MD 21231, USA
| | - Janani Narayan
- The Center for Nanomedicine, The Wilmer Eye Institute, Johns Hopkins University School of Medicine, 400 N Broadway, Baltimore, MD 21231, USA; Department of Chemical and Biomolecular Engineering, Johns Hopkins University, 3400 N. Charles Street, Baltimore, MD 21218, USA
| | - Hannah Zierden
- The Center for Nanomedicine, The Wilmer Eye Institute, Johns Hopkins University School of Medicine, 400 N Broadway, Baltimore, MD 21231, USA; Department of Chemical and Biomolecular Engineering, Johns Hopkins University, 3400 N. Charles Street, Baltimore, MD 21218, USA
| | - Kalpana Betageri
- The Center for Nanomedicine, The Wilmer Eye Institute, Johns Hopkins University School of Medicine, 400 N Broadway, Baltimore, MD 21231, USA; Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Olivia Musmanno
- The Center for Nanomedicine, The Wilmer Eye Institute, Johns Hopkins University School of Medicine, 400 N Broadway, Baltimore, MD 21231, USA; Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Helen Wiegand
- The Center for Nanomedicine, The Wilmer Eye Institute, Johns Hopkins University School of Medicine, 400 N Broadway, Baltimore, MD 21231, USA; Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Xinglu Huang
- The Center for Nanomedicine, The Wilmer Eye Institute, Johns Hopkins University School of Medicine, 400 N Broadway, Baltimore, MD 21231, USA; Department of Ophthalmology, The Wilmer Eye Institute, Johns Hopkins University School of Medicine, 400 N. Broadway, Baltimore, MD 21231, USA
| | - Sanjeev Gumber
- Division of Pathology, Yerkes National Primate Research Center, Atlanta, GA 30322, USA
| | - Justin Hanes
- The Center for Nanomedicine, The Wilmer Eye Institute, Johns Hopkins University School of Medicine, 400 N Broadway, Baltimore, MD 21231, USA; Department of Ophthalmology, The Wilmer Eye Institute, Johns Hopkins University School of Medicine, 400 N. Broadway, Baltimore, MD 21231, USA; Department of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; Department of Chemical and Biomolecular Engineering, Johns Hopkins University, 3400 N. Charles Street, Baltimore, MD 21218, USA; Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.
| | - Laura M Ensign
- The Center for Nanomedicine, The Wilmer Eye Institute, Johns Hopkins University School of Medicine, 400 N Broadway, Baltimore, MD 21231, USA; Department of Ophthalmology, The Wilmer Eye Institute, Johns Hopkins University School of Medicine, 400 N. Broadway, Baltimore, MD 21231, USA; Department of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; Department of Chemical and Biomolecular Engineering, Johns Hopkins University, 3400 N. Charles Street, Baltimore, MD 21218, USA; Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.
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32
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Local delivery of macromolecules to treat diseases associated with the colon. Adv Drug Deliv Rev 2018; 136-137:2-27. [PMID: 30359631 DOI: 10.1016/j.addr.2018.10.009] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Revised: 10/10/2018] [Accepted: 10/17/2018] [Indexed: 12/15/2022]
Abstract
Current treatments for intestinal diseases including inflammatory bowel diseases, irritable bowel syndrome, and colonic bacterial infections are typically small molecule oral dosage forms designed for systemic delivery. The intestinal permeability hurdle to achieve systemic delivery from oral formulations of macromolecules is challenging, but this drawback can be advantageous if an intestinal region is associated with the disease. There are some promising formulation approaches to release peptides, proteins, antibodies, antisense oligonucleotides, RNA, and probiotics in the colon to enable local delivery and efficacy. We briefly review colonic physiology in relation to the main colon-associated diseases (inflammatory bowel disease, irritable bowel syndrome, infection, and colorectal cancer), along with the impact of colon physiology on dosage form design of macromolecules. We then assess formulation strategies designed to achieve colonic delivery of small molecules and concluded that they can also be applied some extent to macromolecules. We describe examples of formulation strategies in preclinical research aimed at colonic delivery of macromolecules to achieve high local concentration in the lumen, epithelial-, or sub-epithelial tissue, depending on the target, but with the benefit of reduced systemic exposure and toxicity. Finally, the industrial challenges in developing macromolecule formulations for colon-associated diseases are presented, along with a framework for selecting appropriate delivery technologies.
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Hatton GB, Madla CM, Rabbie SC, Basit AW. All disease begins in the gut: Influence of gastrointestinal disorders and surgery on oral drug performance. Int J Pharm 2018; 548:408-422. [PMID: 29969711 DOI: 10.1016/j.ijpharm.2018.06.054] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Revised: 06/23/2018] [Accepted: 06/25/2018] [Indexed: 02/07/2023]
Abstract
The term "disease" conjures a plethora of graphic imagery for many, and the use of drugs to combat symptoms and treat underlying pathology is at the core of modern medicine. However, the effects of the various gastrointestinal diseases, infections, co-morbidities and the impact of gastrointestinal surgery on the pharmacokinetic and pharmacodynamic behaviour of drugs have been largely overlooked. The better elucidation of disease pathology and the role of underlying cellular and molecular mechanisms have increased our knowledge as far as diagnoses and prognoses are concerned. In addition, the recent advances in our understanding of the intestinal microbiome have linked the composition and function of gut microbiota to disease predisposition and development. This knowledge, however, applies less so in the context of drug absorption and distribution for orally administered dosage forms. Here, we revisit and re-evaluate the influence of a portfolio of gastrointestinal diseases and surgical effects on the functionality of the gastrointestinal tract, their implications for drug delivery and attempt to uncover significant links for clinical practice.
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Affiliation(s)
- Grace B Hatton
- UCL School of Pharmacy, University College London, 29 - 39 Brunswick Square, London, WC1N 1AX, United Kingdom
| | - Christine M Madla
- UCL School of Pharmacy, University College London, 29 - 39 Brunswick Square, London, WC1N 1AX, United Kingdom
| | - Sarit C Rabbie
- UCL School of Pharmacy, University College London, 29 - 39 Brunswick Square, London, WC1N 1AX, United Kingdom
| | - Abdul W Basit
- UCL School of Pharmacy, University College London, 29 - 39 Brunswick Square, London, WC1N 1AX, United Kingdom.
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34
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Sardar A, Rout NK, Nath S, Prasad M, Mahanti J, Mondal S, Tarafdar PK. A headgroup linker perturbs pK avia acyl chain migration: designing base-labile supramolecular assemblies. Chem Commun (Camb) 2018; 54:4282-4285. [PMID: 29632932 DOI: 10.1039/c8cc00776d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Acyl chain transfer, which perturbs the protonation equilibrium of amine and reduces the apparent pKa by 2.0-2.5 units, is used to develop a liposome-based drug delivery system.
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Affiliation(s)
- Avijit Sardar
- Indian Institute of Science Education and Research Kolkata, Mohanpur, West Bengal, India.
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35
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Moghimipour E, Dorkoosh FA, Rezaei M, Kouchak M, Fatahiasl J, Angali KA, Ramezani Z, Amini M, Handali S. In vivo evaluation of pH and time-dependent polymers as coating agent for colonic delivery using central composite design. J Drug Deliv Sci Technol 2018. [DOI: 10.1016/j.jddst.2017.09.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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36
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Wong CY, Al-Salami H, Dass CR. Microparticles, microcapsules and microspheres: A review of recent developments and prospects for oral delivery of insulin. Int J Pharm 2017; 537:223-244. [PMID: 29288095 DOI: 10.1016/j.ijpharm.2017.12.036] [Citation(s) in RCA: 153] [Impact Index Per Article: 21.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Accepted: 12/17/2017] [Indexed: 01/02/2023]
Abstract
Diabetes mellitus is a chronic metabolic health disease affecting the homeostasis of blood sugar levels. However, subcutaneous injection of insulin can lead to patient non-compliance, discomfort, pain and local infection. Sub-micron sized drug delivery systems have gained attention in oral delivery of insulin for diabetes treatment. In most of the recent literature, the terms "microparticles" and "nanoparticle" refer to particles where the dimensions of the particle are measured in micrometers and nanometers respectively. For instance, insulin-loaded particles are defined as microparticles with size larger than 1 μm by most of the research groups. The size difference between nanoparticles and microparticles proffers numerous effects on the drug loading efficiency, aggregation, permeability across the biological membranes, cell entry and tissue retention. For instance, microparticulate drug delivery systems have demonstrated a number of advantages including protective effect against enzymatic degradation, enhancement of peptide stability, site-specific and controlled drug release. Compared to nanoparticulate drug delivery systems, microparticulate formulations can facilitate oral absorption of insulin by paracellular, transcellular and lymphatic routes. In this article, we review the current status of microparticles, microcapsules and microspheres for oral administration of insulin. A number of novel techniques including layer-by-layer coating, self-polymerisation of shell, nanocomposite microparticulate drug delivery system seem to be promising for enhancing the oral bioavailability of insulin. This review draws several conclusions for future directions and challenges to be addressed for optimising the properties of microparticulate drug formulations and enhancing their hypoglycaemic effects.
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Affiliation(s)
- Chun Y Wong
- School of Pharmacy and Biomedical Science, Curtin University, Bentley 6102, Australia; Curtin Health Innovation Research Institute, Bentley 6102, Australia
| | - Hani Al-Salami
- School of Pharmacy and Biomedical Science, Curtin University, Bentley 6102, Australia; Curtin Health Innovation Research Institute, Bentley 6102, Australia
| | - Crispin R Dass
- School of Pharmacy and Biomedical Science, Curtin University, Bentley 6102, Australia; Curtin Health Innovation Research Institute, Bentley 6102, Australia.
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37
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Moghimipour E, Rezaei M, Kouchak M, Fatahiasl J, Angali KA, Ramezani Z, Amini M, Dorkoosh FA, Handali S. Effects of coating layer and release medium on release profile from coated capsules with Eudragit FS 30D: an in vitro and in vivo study. Drug Dev Ind Pharm 2017; 44:861-867. [PMID: 29235889 DOI: 10.1080/03639045.2017.1415927] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
The aim of the present research was to evaluate the impact of coating layers on release profile from enteric coated dosage forms. Capsules were coated with Eudragit FS 30D using dipping method. The drug profile was evaluated in both phosphate buffer and Hank's solutions. Utilization X-ray imaging, gastrointestinal transmission of enteric coated capsules was traced in rats. According to the results, no release of the drug was found at pH 1.2, and the extent of release drug in pH 6.8 medium was decreased by adding the coating layers. The results indicated single-layer coated capsules in phosphate buffer were significantly higher than that in Hank's solution. However, no significant difference was observed from capsules with three coating layers in two different dissolution media. X-ray imaging showed that enteric coated capsules were intact in the stomach and in the small intestine, while disintegrated in the colon.
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Affiliation(s)
- Eskandar Moghimipour
- a Nanotechnology Research Center , Ahvaz Jundishapur University of Medical Sciences , Ahvaz , Iran.,b Cellular and Molecular Research Center , Ahvaz Jundishapur University of Medical Sciences , Ahvaz , Iran
| | - Mohsen Rezaei
- c Department of Toxicology, Faculty of Medical Sciences , Tarbiat Modares University , Tehran , Iran
| | - Maryam Kouchak
- a Nanotechnology Research Center , Ahvaz Jundishapur University of Medical Sciences , Ahvaz , Iran
| | - Jafar Fatahiasl
- d Department of Radiographic Technology, Faculty of Paramedicine , Ahvaz Jundishapur University of Medical Sciences , Ahvaz , Iran
| | - Kambiz Ahmadi Angali
- e Department of Biostatistics, School of Public Health , Ahvaz Jundishapur University of Medical Sciences , Ahvaz , Iran
| | - Zahra Ramezani
- a Nanotechnology Research Center , Ahvaz Jundishapur University of Medical Sciences , Ahvaz , Iran
| | - Mohsen Amini
- f Department of Medicinal Chemistry, Faculty of Pharmacy , Tehran University of Medical Sciences , Tehran , Iran
| | - Farid Abedin Dorkoosh
- g Department of Pharmaceutics, Faculty of Pharmacy , Tehran University of Medical Sciences , Tehran , Iran.,h Medical Biomaterial Research Centre (MBRC) , Tehran University of Medical Sciences , Tehran , Iran
| | - Somayeh Handali
- a Nanotechnology Research Center , Ahvaz Jundishapur University of Medical Sciences , Ahvaz , Iran
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Patel MM. Formulation and development of di-dependent microparticulate system for colon-specific drug delivery. Drug Deliv Transl Res 2017; 7:312-324. [PMID: 28138901 DOI: 10.1007/s13346-017-0358-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Colorectal cancer (CRC) is the third most common cancer globally and the second most common cause of cancer-related deaths. Site-specific delivery of drugs leads to an increase in the availability of drugs at the targeted region. The objective of the present investigation was to develop a dually functional microparticulate colon-targeted drug delivery system of meloxicam for potential application in the prophylaxis of colorectal cancer. Chitosan microspheres were prepared by using emulsification-chemical cross-linking technique. Formulation parameters studied include chitosan concentration, drug to polymer ratio, agitation speed, emulsifier concentration, quantity of cross-linking agent and time for cross-linking. In vitro evaluation of microspheres revealed premature release of drug in the upper part of gastrointestinal tract. Since coating of microspheres is difficult to accomplish (with reproducible results), they were compacted to tablets. Enteric coating of tableted microspheres was achieved using Eudragit® S100. In vitro evaluation and SEM studies depict that the microspheres remain intact during compression process. The developed system was further evaluated for in vivo pharmacokinetic and roentgenography studies. In vivo pharmacokinetic evaluation in rabbits reveal that the onset of drug absorption from the coated tableted microspheres (T lag time = 4.67 ± 0.58 h) was significantly delayed compared to uncoated tableted microspheres. In vivo roentgenographic study revealed that the system remained intact, until it reaches to the colonic region (5 h). Thus, from the results of the study, it can be revealed that the developed system could serve as a potential tool for efficient delivery of drug to the colonic region.
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Affiliation(s)
- Mayur M Patel
- Department of Pharmaceutics, Institute of Pharmacy, Nirma University, SG Highway, Chharodi, Ahmedabad, Gujarat, 382 481, India.
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In vitro and in vivo study of pH-sensitive and colon-targeting P(LE-IA-MEG) hydrogel microspheres used for ulcerative colitis therapy. Eur J Pharm Biopharm 2017; 122:70-77. [PMID: 29017953 DOI: 10.1016/j.ejpb.2017.10.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Revised: 10/01/2017] [Accepted: 10/06/2017] [Indexed: 01/10/2023]
Abstract
Hydrocortisone sodium succinate (HSS) is an anti-inflammatory drug, but its application on ulcerative colitis (UC) treatment is limited by its associated side-effects. To solve this problem, a kind of pH-sensitive P(LE-IA-MEG) hydrogel microspheres (HMSs) were prepared as the drug carrier of hydrocortisone sodium succinate (HSS) for the treatment of UC. The P(LE-IA-MEG) HMSs were spherical in shape with good dispersion and the mean particle size was 34.87±0.90μm. HSS was successfully loaded into the P(LE-IA-MEG) HMSs. The in vitro release study of HSS-loaded HMSs (HSS-HMSs) revealed that the HSS-HMSs possessed desirable pH-sensitivity, the cumulative release rate was 4.07% and 94.64% in the solution with pH 1.2 and pH 7.4 solution during 12h, respectively. Furthermore, the study on pharmacokinetic, gastrointestinal drug residue and side-effects were conducted to evaluate the in vivo colon-targeting property of the HSS-HMSs. All the results showed that the HSS-HMSs could deliver HSS to the colon as well as reduce its premature absorption in the upper gastrointestinal tract. Finally, the HSS-HMSs showed better ameliorative effects and therapeutic effects on mice with experimental colitis as compared to HSS. In conclusion, the HSS-HMSs had great potential in the treatment of UC.
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Dodoo CC, Wang J, Basit AW, Stapleton P, Gaisford S. Targeted delivery of probiotics to enhance gastrointestinal stability and intestinal colonisation. Int J Pharm 2017; 530:224-229. [DOI: 10.1016/j.ijpharm.2017.07.068] [Citation(s) in RCA: 68] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Revised: 07/21/2017] [Accepted: 07/21/2017] [Indexed: 01/01/2023]
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41
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Maroni A, Moutaharrik S, Zema L, Gazzaniga A. Enteric coatings for colonic drug delivery: state of the art. Expert Opin Drug Deliv 2017; 14:1027-1029. [PMID: 28749188 DOI: 10.1080/17425247.2017.1360864] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Alessandra Maroni
- a Dipartimento di Scienze Farmaceutiche, Sezione di Tecnologia e Legislazione Farmaceutiche "Maria Edvige Sangalli" , Università degli Studi di Milano , Milan , Italy
| | - Saliha Moutaharrik
- a Dipartimento di Scienze Farmaceutiche, Sezione di Tecnologia e Legislazione Farmaceutiche "Maria Edvige Sangalli" , Università degli Studi di Milano , Milan , Italy
| | - Lucia Zema
- a Dipartimento di Scienze Farmaceutiche, Sezione di Tecnologia e Legislazione Farmaceutiche "Maria Edvige Sangalli" , Università degli Studi di Milano , Milan , Italy
| | - Andrea Gazzaniga
- a Dipartimento di Scienze Farmaceutiche, Sezione di Tecnologia e Legislazione Farmaceutiche "Maria Edvige Sangalli" , Università degli Studi di Milano , Milan , Italy
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42
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Lima IAD, Pomin SP, Cavalcanti OA. Development and characterization of pullulan-polymethacrylate free films as potential material for enteric drug release. BRAZ J PHARM SCI 2017. [DOI: 10.1590/s2175-97902017000300002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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43
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Ammar HO, Makram TS, Mosallam S. Effect of Polymers on the Physicochemical Properties and Biological Performance of Fenoprofen Calcium Dihydrate-Triacetyl-β-Cyclodextrin Complex. Pharmaceutics 2017; 9:E23. [PMID: 28671624 PMCID: PMC5620564 DOI: 10.3390/pharmaceutics9030023] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Revised: 06/15/2017] [Accepted: 06/19/2017] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND Fenoprofen calcium dehydrate (FCD) is counted as a non-steroidal, anti-inflammatory, anti-arthritic drug. FCD is slightly water soluble. It is indicated for mild pain relief, where the suggested dosage is 200 mg orally every 4 to 6 h. AIM Reduce dissolution efficiency, reach an extended therapeutic effect and reduce the frequency of the drug side effects. METHOD Combination of the co-evaporated drug:triacetyl-β-cyclodextrin complex prepared in a ratio of 1:3 and either of two polymers-hydroxylpropylmethyl cellulose (HPMC) or ethyl cellulose (EC)-in the same formulation. Invitro dissolution studies were carried in simulated gastric (pH 1.2) and intestinal (pH 6.8) fluids, by using the USP dissolution tester (rotating paddle apparatus). The FCD in vitro release from EC/drug complex was markedly retarded. Interaction between fenoprofen, TA-β-CD, EC, HPMC in the solid state were confirmed by FT-IR, DSC, XRD and SEM. In vivo studies assessed the anti-inflammatory and analgesic activities and the results were compared with the market product Nalfosab® Capsules. RESULTS Remarkable inhibition of inflammation and nociception after 24 h was attained for EC/drug complex. CONCLUSIONS EC/drug complex has a sustained effect due to high remaining amount after elapsing with remarkable inhibition of inflammation.
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Affiliation(s)
- Hussein O Ammar
- Pharmaceutics and Pharmaceutical Technology Department, Future University, Cairo 11311, Egypt.
| | - Tarek S Makram
- Pharmaceutics Department, October 6 University, Giza 12511, Egypt.
| | - Shaimaa Mosallam
- Pharmaceutics Department, October 6 University, Giza 12511, Egypt.
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44
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Hens B, Corsetti M, Spiller R, Marciani L, Vanuytsel T, Tack J, Talattof A, Amidon GL, Koziolek M, Weitschies W, Wilson CG, Bennink RJ, Brouwers J, Augustijns P. Exploring gastrointestinal variables affecting drug and formulation behavior: Methodologies, challenges and opportunities. Int J Pharm 2017; 519:79-97. [DOI: 10.1016/j.ijpharm.2016.11.063] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Revised: 11/28/2016] [Accepted: 11/29/2016] [Indexed: 12/16/2022]
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45
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Role of synbiotics in polysaccharide assisted colon targeted microspheres of mesalamine for the treatment of ulcerative colitis. Int J Biol Macromol 2017; 95:438-450. [DOI: 10.1016/j.ijbiomac.2016.11.066] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Revised: 11/03/2016] [Accepted: 11/18/2016] [Indexed: 12/22/2022]
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46
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Maher S, Santos A, Kumeria T, Kaur G, Lambert M, Forward P, Evdokiou A, Losic D. Multifunctional microspherical magnetic and pH responsive carriers for combination anticancer therapy engineered by droplet-based microfluidics. J Mater Chem B 2017; 5:4097-4109. [DOI: 10.1039/c7tb00588a] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Drug loaded luminescent porous silicon diatoms and magnetic bacterial nanowires were encapsulated within pH sensitive polymer forming biodegradable microcapsules using droplet-based microfluidics for targeting colorectal cancer.
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Affiliation(s)
- Shaheer Maher
- School of Chemical Engineering
- The University of Adelaide
- Adelaide
- Australia
- Faculty of Pharmacy
| | - Abel Santos
- School of Chemical Engineering
- The University of Adelaide
- Adelaide
- Australia
- Institute for Photonics and Advanced Sensing (IPAS)
| | - Tushar Kumeria
- School of Chemical Engineering
- The University of Adelaide
- Adelaide
- Australia
| | - Gagandeep Kaur
- Discipline of Surgery
- Basil Hetzel Institute
- The University of Adelaide
- Adelaide
- Australia
| | - Martin Lambert
- School of Civil
- Environmental and Mining Engineering
- The University of Adelaide
- Adelaide
- Australia
| | | | - Andreas Evdokiou
- Discipline of Surgery
- Basil Hetzel Institute
- The University of Adelaide
- Adelaide
- Australia
| | - Dusan Losic
- School of Chemical Engineering
- The University of Adelaide
- Adelaide
- Australia
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Reis CBD, Boff DS, Lima IAD, Santos LFD, Calvalcanti OA, Bunhak ÉJ. Eudragit ® FS 30 D polymeric films containing chondroitin sulfate as candidates for use in coating seeking modified delivery of drugs. BRAZ J PHARM SCI 2016. [DOI: 10.1590/s1984-82502016000400007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Jin M, Yu DG, Geraldes CFGC, Williams GR, Bligh SWA. Theranostic Fibers for Simultaneous Imaging and Drug Delivery. Mol Pharm 2016; 13:2457-65. [DOI: 10.1021/acs.molpharmaceut.6b00197] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Miao Jin
- UCL
School of Pharmacy, University College London, 29-39 Brunswick Square, London WC1N 1AX, U.K
| | - Deng-Guang Yu
- School of Materials Science & Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Carlos F. G. C. Geraldes
- Department
of Life Sciences and Coimbra Chemistry Center - CQC, Faculty of Science
and Technology, University of Coimbra, 3000-393 Coimbra, Portugal
| | - Gareth R. Williams
- UCL
School of Pharmacy, University College London, 29-39 Brunswick Square, London WC1N 1AX, U.K
| | - S. W. Annie Bligh
- Department
of Life Sciences, Faculty of Science and Technology, University of Westminster, 115 New Cavendish Street, London W1W 6UW, U.K
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Alvarez-Lorenzo C, Garcia-Gonzalez CA, Bucio E, Concheiro A. Stimuli-responsive polymers for antimicrobial therapy: drug targeting, contact-killing surfaces and competitive release. Expert Opin Drug Deliv 2016; 13:1109-19. [PMID: 27074830 DOI: 10.1080/17425247.2016.1178719] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
INTRODUCTION Polymers can be designed to modify their features as a function of the level and nature of the surrounding microorganisms. Such responsive polymers can endow drug delivery systems and drug-medical device combination products with improved performance against intracellular infections and biofilms. AREAS COVERED Knowledge on microorganism growth environment outside and inside cells and formation of biofilm communities on biological and synthetic surfaces, together with advances in materials science and drug delivery are prompting strategies with improved efficacy and safety compared to traditional systemic administration of antimicrobial agents. This review deals with antimicrobial strategies that rely on: (i) polymers that disintegrate or undergo phase-transitions in response to changes in enzymes, pH and pO2 associated to microorganism growth; (ii) stimuli-responsive polymers that expose contact-killing groups when microorganisms try to adhere; and (iii) bioinspired polymers that recognize microorganisms for triggered (competitive/affinity-driven) drug release. EXPERT OPINION Prophylaxis and treatment of infections may benefit from polymers that are responsive to the unique changes that microbial growth causes in the surrounding environment or that even recognize the microorganism itself or its quorum sensing signals. These polymers may offer novel tools for the design of macrophage-, bacteria- and/or biofilm-targeted nanocarriers as well as of medical devices with switchable antibiofouling properties.
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Affiliation(s)
- Carmen Alvarez-Lorenzo
- a Departamento de Farmacia y Tecnología Farmacéutica , Universidade de Santiago de Compostela , Santiago de Compostela , Spain
| | - Carlos A Garcia-Gonzalez
- a Departamento de Farmacia y Tecnología Farmacéutica , Universidade de Santiago de Compostela , Santiago de Compostela , Spain
| | - Emilio Bucio
- b Departamento de Química de Radiaciones y Radioquímica , Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria , México DF , Mexico
| | - Angel Concheiro
- a Departamento de Farmacia y Tecnología Farmacéutica , Universidade de Santiago de Compostela , Santiago de Compostela , Spain
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Gamma scintigraphic studies on guar gum-based compressed coated tablets for colonic delivery of theophylline in healthy volunteers. J Drug Deliv Sci Technol 2016. [DOI: 10.1016/j.jddst.2016.01.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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