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Tran PHL, Tran TTD. Current Film Coating Designs for Colon-Targeted Oral Delivery. Curr Med Chem 2021; 28:1957-1969. [PMID: 32496984 DOI: 10.2174/0929867327666200604170048] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 05/02/2020] [Accepted: 05/03/2020] [Indexed: 11/22/2022]
Abstract
Colon-targeted oral delivery has recently attracted a substantial number of studies on both systemic and local treatments. Among approaches for colonic delivery, film coatings have been demonstrated as effective elements of the drug delivery systems because they can integrate multiple release strategies, such as pH-controlled release, time-controlled release and enzyme-triggered release. Moreover, coating layer modulations, natural film materials and nanoparticle coatings have been vigorously investigated with promising applications. This review aims to describe the primary approaches for improving drug delivery to the colon in the last decade. The outstanding importance of current developments in film coatings will advance dosage form designs and lead to the development of efficient colon-targeted oral delivery systems.
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Affiliation(s)
| | - 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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2
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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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Zhang J, Akihisa T, Kurita M, Kikuchi T, Zhu WF, Ye F, Dong ZH, Liu WY, Feng F, Xu J. Melanogenesis-Inhibitory and Cytotoxic Activities of Triterpene Glycoside Constituents from the Bark of Albizia procera. JOURNAL OF NATURAL PRODUCTS 2018; 81:2612-2620. [PMID: 30520635 DOI: 10.1021/acs.jnatprod.8b00167] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Five oleanane-type triterpene glycosides including three new ones, proceraosides E-G (1-3), were isolated from a MeOH-soluble extract of Albizia procera bark. The structures of 1-3 were determined by use of NMR spectra, HRESIMS, and chemical methods. Compounds 1-5 exhibited inhibitory activities against the proliferation of the A549, SKBR3, AZ521, and HL60 human cancer cell lines (IC50 0.28-1.8 μM). Additionally, the apoptosis-inducing activity of compound 2 was evaluated by Hoechst 33342 staining and flow cytometry, while the effects of 2 on the activation of caspases-9, -8, and -3 in HL60 cells were revealed by Western blot analysis.
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Affiliation(s)
- Jie Zhang
- Department of Natural Medicine Chemistry, School of Traditional Chinese Pharmacy , China Pharmaceutical University , 24 Tongjiaxiang , Nanjing 210009 , People's Republic of China
- Key Laboratory of Biomedical Functional Materials , China Pharmaceutical University , Nanjing 211198 , People's Republic of China
| | - Toshihiro Akihisa
- College of Science and Technology , Nihon University , 1-8-14 Kanda Surugadai , Chiyoda-ku, Tokyo 101-8308 , Japan
| | - Masahiro Kurita
- College of Science and Technology , Nihon University , 1-8-14 Kanda Surugadai , Chiyoda-ku, Tokyo 101-8308 , Japan
| | - Takashi Kikuchi
- Osaka University of Pharmaceutical Sciences , Nasahara, Takatsuki, Osaka 569-1094 , Japan
| | - Wan-Fang Zhu
- Department of Natural Medicine Chemistry, School of Traditional Chinese Pharmacy , China Pharmaceutical University , 24 Tongjiaxiang , Nanjing 210009 , People's Republic of China
| | - Feng Ye
- Department of Natural Medicine Chemistry, School of Traditional Chinese Pharmacy , China Pharmaceutical University , 24 Tongjiaxiang , Nanjing 210009 , People's Republic of China
| | - Zhen-Huan Dong
- Department of Pharmaceutical Analysis , China Pharmaceutical University , Nanjing 210009 , People's Republic of China
| | - Wen-Yuan Liu
- Department of Pharmaceutical Analysis , China Pharmaceutical University , Nanjing 210009 , People's Republic of China
| | - Feng Feng
- Department of Natural Medicine Chemistry, School of Traditional Chinese Pharmacy , China Pharmaceutical University , 24 Tongjiaxiang , Nanjing 210009 , People's Republic of China
- Key Laboratory of Biomedical Functional Materials , China Pharmaceutical University , Nanjing 211198 , People's Republic of China
- Jiangsu Food and Pharmaceutical Science College , Huaian , Jiangsu 223003 , People's Republic of China
| | - Jian Xu
- Department of Natural Medicine Chemistry, School of Traditional Chinese Pharmacy , China Pharmaceutical University , 24 Tongjiaxiang , Nanjing 210009 , People's Republic of China
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Sipponen MH, Lange H, Ago M, Crestini C. Understanding Lignin Aggregation Processes. A Case Study: Budesonide Entrapment and Stimuli Controlled Release from Lignin Nanoparticles. ACS SUSTAINABLE CHEMISTRY & ENGINEERING 2018; 6:9342-9351. [PMID: 30271691 PMCID: PMC6156105 DOI: 10.1021/acssuschemeng.8b01652] [Citation(s) in RCA: 79] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Revised: 05/18/2018] [Indexed: 05/06/2023]
Abstract
The mechanism of lignin nanoprecipitation and subsequent self-assembly was elucidated by studying generation of lignin nanoparticles (LNPs) from aqueous ethanol. LNP formation was found to follow a kinetically controlled nucleation-growth mechanism in which large lignin molecules formed the initial critical nuclei. Using this information, we demonstrate entrapment of budesonide in LNPs and subsequent pH-triggered and surfactant-responsive release of this synthetic anti-inflammatory corticosteroid. Overall, our results not only provide a promising intestinal delivery system for budesonide but also deliver fundamental mechanistic understanding for the entrapment of actives in LNPs with controlled size and release properties.
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Affiliation(s)
- Mika H. Sipponen
- Department
of Chemical Science and Technologies, University
of Rome Tor Vergata, Via della Ricerca Scientifica, Rome 00133, Italy
- Department
of Bioproducts and Biosystems, Aalto University, Vuorimiehentie 1, Espoo 02150, Finland
| | - Heiko Lange
- Department
of Chemical Science and Technologies, University
of Rome Tor Vergata, Via della Ricerca Scientifica, Rome 00133, Italy
| | - Mariko Ago
- Department
of Bioproducts and Biosystems, Aalto University, Vuorimiehentie 1, Espoo 02150, Finland
| | - Claudia Crestini
- Department
of Chemical Science and Technologies, University
of Rome Tor Vergata, Via della Ricerca Scientifica, Rome 00133, Italy
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Characterization of Native and Graft Copolymerized Albizia Gums and Their Application as a Flocculant. ACTA ACUST UNITED AC 2017. [DOI: 10.1155/2017/3125385] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The functional properties and flocculation efficiency of purified Albizia saman (AS) and Albizia glaberrima (AG) gum exudates modified by graft copolymerization with acrylamide were investigated. The grafting efficiency of AS and AG was 54 and 58%, respectively. The cold water-insoluble gel of native AS and AG was 38.23 and 35.55%, which increased to 39.75 and 40.55% after graft copolymerization. Graft copolymerization of AS and AG gums reduced their oil binding and emulsion capacity from 4.89 and 3.44% to 3.69 and 2.40%, respectively. The dissolution kinetics of the native gums between 40 and 90°C and 0 and 150 min revealed a steady increase in solubility of the native gums from 6.05 to 9.53 g/L (AS) and 5.90 to 8.78 g/L (AG). The flocculation efficiency of the native AS and AG gums at 50 ppm concentration was 74.30 and 74.73%, which increased to 98.46% and 98.29% in the graft copolymerized gums, respectively.
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In Vitro and In Vivo Correlation of Colon-Targeted Compression-Coated Tablets. JOURNAL OF PHARMACEUTICS 2016; 2016:5742967. [PMID: 26989562 PMCID: PMC4773564 DOI: 10.1155/2016/5742967] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/27/2015] [Accepted: 01/17/2016] [Indexed: 11/29/2022]
Abstract
This study was performed to assess and correlate in vitro drug release with in vivo absorption of prednisolone (PDL) from a colon-targeted tablet prepared by compression coating of core tablet. In vivo drug absorption study was conducted using a high performance liquid chromatographic (HPLC) method, which was developed and validated for the estimation of PDL in rabbit plasma. The calibration curve showed linearity in the concentration range of 0.05 to 50 μg/mL with the correlation coefficient (r) of 0.999. The method was specific and sensitive with the limit of detection (LOD) and lower limit of quantification (LLOQ) of 31.89 ± 1.10 ng/mL and 96.63 ± 3.32 ng/mL, respectively. The extraction recovery (ER) of PDL from three different levels of quality control (QC) samples ranged from 98.18% to 103.54%. In vitro drug release study revealed that less than 10% drug was released in 6.34 h and almost complete (98.64%) drug release was achieved in the following 6 h. In vivo drug absorption study demonstrated lower values of Cmax, AUCtotal, and protracted Tmax from compression-coated tablet. The results confirmed the maximum release of drug in the colon while minimizing release in the upper gastrointestinal tract (GIT). An excellent in vitro and in vivo correlation (IVIVC) was also achieved after considering the lag time.
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Liu C, Wu Y, Zhao L, Huang X. Preparation of acetylsalicylic acid-acylated chitosan as a novel polymeric drug for drug controlled release. Int J Biol Macromol 2015; 78:189-94. [DOI: 10.1016/j.ijbiomac.2015.03.063] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Revised: 02/28/2015] [Accepted: 03/30/2015] [Indexed: 10/23/2022]
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