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pH-Dependent Site Specific Dissolution Improvement by Expansion Isolation Layers in Erythromycin Enteric Coated Tablets. J Drug Deliv Sci Technol 2019. [DOI: 10.1016/j.jddst.2019.101233] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Liu H, Zhao W, Hu Q, Zhao L, Wei Y, Pi C, Yang Y, Yang X, Yuan H, Zhang Y, Qu K, Shi X, Huang Y, Shi H. Gastric floating sustained-release tablet for dihydromyricetin: Development, characterization, and pharmacokinetics study. Saudi Pharm J 2019; 27:1000-1008. [PMID: 31997907 PMCID: PMC6978620 DOI: 10.1016/j.jsps.2019.08.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Accepted: 08/07/2019] [Indexed: 02/06/2023] Open
Abstract
Dihydromyricetin (DHM) is a natural dihydroflavonol compound with quite a number of important pharmacological properties. However, its low solubility in water and poor stability in aqueous environment, have compromised drug efficacy of DHM, thus hindering its clinical use. The present study was to develop DHM-loaded gastric floating sustained-release tablet (DHM-GFT) to improve the bioavailability of DHM. DHM-GFT was prepared via powder direct compression. The formulation of tablet was optimized in terms of the floating ability and drug release rate. The optimized DHM-GFT exhibited short floating lag time of less than 10 s and long floating duration of over 12 h in acidic medium. It had a 12-hour sustained release of DHM, which proved its potential to develop as a twice-a-day dosing preparation. The physicochemical properties of DHM-GFT well satisfied the pharmacopoeial requirements. In addition, the results from pharmacokinetic studies demonstrated that, DHM-GFT could considerably prolong the in vivo residence time of drug and improve the bioavailability via good gastric floating ability and sustained drug release when compared to DHM powder. Therefore, DHM-GFT is promising to promote the application of DHM and merits studies for further development.
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Affiliation(s)
- Hao Liu
- School of Pharmacy, Southwest Medical University, Luzhou City, Sichuan, People's Republic of China
| | - Wenmei Zhao
- School of Pharmacy, Southwest Medical University, Luzhou City, Sichuan, People's Republic of China
| | - Qi Hu
- School of Pharmacy, Southwest Medical University, Luzhou City, Sichuan, People's Republic of China
| | - Ling Zhao
- School of Pharmacy, Southwest Medical University, Luzhou City, Sichuan, People's Republic of China
| | - Yumeng Wei
- School of Pharmacy, Southwest Medical University, Luzhou City, Sichuan, People's Republic of China
| | - Chao Pi
- School of Pharmacy, Southwest Medical University, Luzhou City, Sichuan, People's Republic of China
| | - Yuhan Yang
- School of Pharmacy, Southwest Medical University, Luzhou City, Sichuan, People's Republic of China
| | - Xuerong Yang
- School of Pharmacy, Southwest Medical University, Luzhou City, Sichuan, People's Republic of China
| | - Hang Yuan
- School of Pharmacy, Southwest Medical University, Luzhou City, Sichuan, People's Republic of China
| | - Yuhan Zhang
- School of Clinical Medicine, Southwest Medical University, Luzhou City, Sichuan, People's Republic of China
| | - Kunyan Qu
- School of Pharmacy, Southwest Medical University, Luzhou City, Sichuan, People's Republic of China
| | - Xinyu Shi
- School of Pharmacy, Southwest Medical University, Luzhou City, Sichuan, People's Republic of China
| | - Yao Huang
- School of Pharmacy, Southwest Medical University, Luzhou City, Sichuan, People's Republic of China
| | - Houyin Shi
- Department of Orthopedics, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou City, Sichuan, People's Republic of China
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Gong L, Yu M, Sun Y, Gao Y, An T, Zou M, Cheng G. Design and optimization of gastric floating sustained-release mini-tablets of alfuzosin hydrochloride based on a factorial design: in vitro/in vivo evaluation. Drug Dev Ind Pharm 2018; 44:1990-1999. [PMID: 30058391 DOI: 10.1080/03639045.2018.1506473] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The purpose of this research was to develop multiple-unit gastric floating mini-tablets and to evaluate the possibility of using these mini-tablets as a delivery system to improve the drug absorption for drugs with a narrow absorption window. Mini-tablets were prepared using hydroxypropyl methylcellulose (HPMC K100M) and carbopol 971P as release retarding agents and sodium bicarbonate (NaHCO3) as gas-forming agent. The properties of the prepared mini-tablets in terms of floating characteristic parameters and in vitro release were evaluated. Furthermore, in vivo gastric retention study in rats and in vivo pharmacokinetic study in rabbits of the optimized formulation were performed. The optimized mini-tablets containing 45% HPMC K100M, 15% stearyl alcohol, 13% carbopol 971P, and 12% NaHCO3 were found to float immediately within 1 min and duration more than 9 h. The in vivo gastric retention study results indicated that the mini-tablets could retain in the stomach for more than 6.67 h. Furthermore, the AUC0-t of the floating mini-tablets (6849.83 ± 753.80 h ng·mL-1) was significantly higher than that of marketed sustained-release tablets XATRAL®XL (4970.16 ± 924.60 h ng·mL-1). All these results illustrated that the gastric floating mini-tablets might be a promising drug delivery system for drugs with a narrow absorption window.
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Affiliation(s)
- Ling Gong
- a Department of Pharmaceutics, School of Pharmacy , Shenyang Pharmaceutical University , Shenyang , China
| | - Miao Yu
- a Department of Pharmaceutics, School of Pharmacy , Shenyang Pharmaceutical University , Shenyang , China
| | - Yanyan Sun
- a Department of Pharmaceutics, School of Pharmacy , Shenyang Pharmaceutical University , Shenyang , China
| | - Ying Gao
- a Department of Pharmaceutics, School of Pharmacy , Shenyang Pharmaceutical University , Shenyang , China
| | - Tong An
- a Department of Pharmaceutics, School of Pharmacy , Shenyang Pharmaceutical University , Shenyang , China
| | - Meijuan Zou
- a Department of Pharmaceutics, School of Pharmacy , Shenyang Pharmaceutical University , Shenyang , China
| | - Gang Cheng
- a Department of Pharmaceutics, School of Pharmacy , Shenyang Pharmaceutical University , Shenyang , China
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Issa MG, Souza NVD, Duque MD, Ferraz HG. Physical characterization of multiparticulate systems. BRAZ J PHARM SCI 2018. [DOI: 10.1590/s2175-97902017000400216] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Li J, Chai H, Li Y, Chai X, Zhao Y, Zhao Y, Tao T, Xiang X. A Three-Pulse Release Tablet for Amoxicillin: Preparation, Pharmacokinetic Study and Physiologically Based Pharmacokinetic Modeling. PLoS One 2016; 11:e0160260. [PMID: 27479702 PMCID: PMC4968835 DOI: 10.1371/journal.pone.0160260] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2016] [Accepted: 07/16/2016] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Amoxicillin is a commonly used antibiotic which has a short half-life in human. The frequent administration of amoxicillin is often required to keep the plasma drug level in an effective range. The short dosing interval of amoxicillin could also cause some side effects and drug resistance, and impair its therapeutic efficacy and patients' compliance. Therefore, a three-pulse release tablet of amoxicillin is desired to generate sustained release in vivo, and thus to avoid the above mentioned disadvantages. METHODS The pulsatile release tablet consists of three pulsatile components: one immediate-release granule and two delayed release pellets, all containing amoxicillin. The preparation of a pulsatile release tablet of amoxicillin mainly includes wet granulation craft, extrusion/spheronization craft, pellet coating craft, mixing craft, tablet compression craft and film coating craft. Box-Behnken design, Scanning Electron Microscope and in vitro drug release test were used to help the optimization of formulations. A crossover pharmacokinetic study was performed to compare the pharmacokinetic profile of our in-house pulsatile tablet with that of commercial immediate release tablet. The pharmacokinetic profile of this pulse formulation was simulated by physiologically based pharmacokinetic (PBPK) model with the help of Simcyp®. RESULTS AND DISCUSSION Single factor experiments identify four important factors of the formulation, namely, coating weight of Eudragit L30 D-55 (X1), coating weight of AQOAT AS-HF (X2), the extrusion screen aperture (X3) and compression forces (X4). The interrelations of the four factors were uncovered by a Box-Behnken design to help to determine the optimal formulation. The immediate-release granule, two delayed release pellets, together with other excipients, namely, Avicel PH 102, colloidal silicon dioxide, polyplasdone and magnesium stearate were mixed, and compressed into tablets, which was subsequently coated with Opadry® film to produce pulsatile tablet of amoxicillin. In vitro release study firstly indicated a three-pulse release profile of the tablet. Later the pulse tablet was found to generate the sustained release of amoxicillin in beagle dogs. Furthermore, the Simcyp® software was used to simulate the in vivo concentration time curve model of the three-pulse release tablet for amoxicillin in both human and beagle dog. The prediction by PBPK model nicely fitted the observation in human and beagle dog. CONCLUSIONS This study has demonstrated the interrelation of factors affecting the pulsatile formulation of amoxicillin using a Box-Behnken design. The three-pulse release tablets of amoxicillin were proven to generate pulsatile release in vitro and sustained release in vivo. This formulation was also found to extend the effective plasma concentration in human compared to the tablet of immediate release based on the simulation data by PBPK modeling. This study provides an example of using PBPK to guide the development of pulsatile dosage forms.
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Affiliation(s)
- Jin Li
- National Pharmaceutical Engineering Research Center, China State Institute of Pharmaceutical Industry, Shanghai, China
| | - Hongyu Chai
- National Pharmaceutical Engineering Research Center, China State Institute of Pharmaceutical Industry, Shanghai, China
| | - Yang Li
- National Pharmaceutical Engineering Research Center, China State Institute of Pharmaceutical Industry, Shanghai, China
| | - Xuyu Chai
- National Pharmaceutical Engineering Research Center, China State Institute of Pharmaceutical Industry, Shanghai, China
| | - Yan Zhao
- National Pharmaceutical Engineering Research Center, China State Institute of Pharmaceutical Industry, Shanghai, China
| | - Yunfan Zhao
- Camelot Academy, Durham, the United States of America
| | - Tao Tao
- National Pharmaceutical Engineering Research Center, China State Institute of Pharmaceutical Industry, Shanghai, China
| | - Xiaoqiang Xiang
- Department of Clinical Pharmacy, School of Pharmacy, Fudan University, Shanghai, China
- * E-mail:
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Challenges in oral drug delivery of antiretrovirals and the innovative strategies to overcome them. Adv Drug Deliv Rev 2016; 103:105-120. [PMID: 26772138 DOI: 10.1016/j.addr.2015.12.022] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2015] [Revised: 12/20/2015] [Accepted: 12/28/2015] [Indexed: 01/30/2023]
Abstract
Development of novel drug delivery systems (DDS) represents a promising opportunity to overcome the various bottlenecks associated with the chronic antiretroviral (ARV) therapy of the human immunodeficiency virus (HIV) infection. Oral drug delivery is the most convenient and simplest route of drug administration that involves the swallowing of a pharmaceutical compound with the intention of releasing it into the gastrointestinal tract. In oral delivery, drugs can be formulated in such a way that they are protected from digestive enzymes, acids, etc. and released in different regions of the small intestine and/or the colon. Not surprisingly, with the exception of the subcutaneous enfuvirtide, all the marketed ARVs are administered orally. However, conventional (marketed) and innovative (under investigation) oral delivery systems must overcome numerous challenges, including the acidic gastric environment, and the poor aqueous solubility and physicochemical instability of many of the approved ARVs. In addition, the mucus barrier can prevent penetration and subsequent absorption of the released drug, a phenomenon that leads to lower oral bioavailability and therapeutic concentration in plasma. Moreover, the frequent administration of the cocktail (ARVs are administered at least once a day) favors treatment interruption. To improve the oral performance of ARVs, the design and development of more efficient oral drug delivery systems are called for. The present review highlights various innovative research strategies adopted to overcome the limitations of the present treatment regimens and to enhance the efficacy of the oral ARV therapy in HIV.
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Hoang Thi TH, Lhafidi S, Carneiro SP, Flament MP. Feasability of a new process to produce fast disintegrating pellets as novel multiparticulate dosage form for pediatric use. Int J Pharm 2015; 496:842-9. [DOI: 10.1016/j.ijpharm.2015.09.049] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2015] [Revised: 09/17/2015] [Accepted: 09/19/2015] [Indexed: 11/28/2022]
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Kanwar N, Kumar R, Sarwal A, Sinha VR. Preparation and evaluation of floating tablets of pregabalin. Drug Dev Ind Pharm 2015; 42:654-60. [PMID: 26146770 DOI: 10.3109/03639045.2015.1062895] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Floating tablets of pregabalin were prepared using different concentrations of the gums (xanthan gum and guar gum), Carbopol 974P NF and HPMC K100. Optimized formulations were studied for physical tests, floating time, swelling behavior, in vitro release studies and stability studies. In vitro drug release was higher for tablet batches containing guar and xanthan gum as compared to the batches containing Carbopol 974P NF. Tablet batches were subjected to stability studies and evaluated by different parameters (drug release, drug content, FTIR and DSC studies). The optimized tablet batch was selected for in vivo pharmacodynamic studies (PTZ induced seizures). The results obtained showed that the onset of jerks and clonus were delayed and extensor phase was abolished with time in treated groups. A significant difference (p > 0.05) was observed in control and treated group behavior indicating an excellent activity of the formulation for a longer period (>12 h).
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Affiliation(s)
| | | | | | - V R Sinha
- a UIPS, Panjab University , Chandigarh , India
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