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Di Z, Zhou B, Zhou L, Di Y, Wang L, Di L. A Gellan Gum/Sodium Alginate-based gastric-protective hydrogel loaded with a combined herbal extract consisting of Panax notoginseng, Bletilla striata and Dendrobium officinale. Int J Biol Macromol 2023; 250:126277. [PMID: 37572808 DOI: 10.1016/j.ijbiomac.2023.126277] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2023] [Revised: 08/05/2023] [Accepted: 08/09/2023] [Indexed: 08/14/2023]
Abstract
One Chinese herbal combination consisting of Panax notoginseng, Bletilla striata and Dendrobium officinale (PBD) is an effective Traditional Chinese Medicine (TCM) prescription and is widely used in clinics to treat gastric ulcers due to their safety and effectiveness compared with chemical agents, such as aspirin and omeprazole. Herein, an in situ forming gel (ISFG) based on Gellan Gum (GG) and Sodium Alginate (SA) was designed to deliver extracts of PBD prescription (EPBDP). The central composite design optimized prescription dosage was 0.1 % w/v of GG and 0.5 % w/v of SA. Gels prepared with this formulation demonstrated outstanding fluidity and instantaneous gel formation. In vitro release data showed that sustained drug release occurred in the gel, and the gel was pH-sensitive. The rheological tests confirmed the formation of stable gel, which exhibited strong viscosity and elasticity. In vitro adhesion assays revealed that the gel had strong gastric mucosal adhesion, while in vivo residual rate experiments of active ingredients revealed that the gel might greatly improve the gastric retention of active ingredients. Animal studies demonstrated that the gel was effective in treating gastric ulcers. Hence, the results of the study show that EPBDP-ISFG, a highly pH-sensitive sustained-release system, is effective.
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Affiliation(s)
- Zhenning Di
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China; Jiangsu Engineering Research Center for Efficient Delivery System of TCM, Nanjing 210023, China
| | - Bingqian Zhou
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China; Jiangsu Engineering Research Center for Efficient Delivery System of TCM, Nanjing 210023, China
| | - Luyao Zhou
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China; Jiangsu Engineering Research Center for Efficient Delivery System of TCM, Nanjing 210023, China
| | - Yawei Di
- East Region Military Command General Hospital, China
| | - Lingchong Wang
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China; Jiangsu Engineering Research Center for Efficient Delivery System of TCM, Nanjing 210023, China.
| | - Liuqing Di
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China; Jiangsu Engineering Research Center for Efficient Delivery System of TCM, Nanjing 210023, China.
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2
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Formulation of a Gastroretentive In Situ Oral Gel Containing Metformin HCl Based on DoE. Pharmaceutics 2022; 14:pharmaceutics14091777. [PMID: 36145525 PMCID: PMC9504191 DOI: 10.3390/pharmaceutics14091777] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 08/17/2022] [Accepted: 08/23/2022] [Indexed: 11/28/2022] Open
Abstract
A gastroretentive in situ oral gel containing metformin hydrochloride (Met HCl) was prepared based on sodium alginate (Sod ALG), calcium carbonate, and hydroxyethylcellulose (HEC). The optimal composition of the formulation was explored based on the design of experiments (DoE). First, a 32 full factorial design was used for formulation E1 to determine proper composition of Sod ALG and calcium carbonate. Second, a circumscribed central composite design was employed to add HEC as a thickening agent (formulation E2). The dissolution rates at 15, 30, 60, 120, and 240 min were used as responses. Partial least squares regression analysis indicated the effect of each component in delaying the release of Met HCl in the oral gel formulation. The optimized formulation E2-08 consisting of 1.88% Sod ALG, 0.63% HEC, and 1.00% calcium carbonate and two more formulations, E2-10 and E2-12 conformed to USP monograph for extended release. Other physicochemical properties, including floating lag time and duration, viscosity, and pH, measured for each batch and FT-IR spectrometry analysis showed no unexpected interaction between Met HCl and excipients. The current study suggests the potential use of a gastroretentive in situ oral gel for Met HCl helping patient compliance. This study highlights that a systematic approach based on DoE allows the formulation optimization.
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Rathore SSS, Geetha M, Manjula BP, Joshi VG, Setty SR. Formulation of stomach-specific floating microparticles of nizatidine and their radiographic evaluation. BRAZ J PHARM SCI 2022. [DOI: 10.1590/s2175-97902022e191009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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4
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Vrettos NN, Roberts CJ, Zhu Z. Gastroretentive Technologies in Tandem with Controlled-Release Strategies: A Potent Answer to Oral Drug Bioavailability and Patient Compliance Implications. Pharmaceutics 2021; 13:pharmaceutics13101591. [PMID: 34683884 PMCID: PMC8539558 DOI: 10.3390/pharmaceutics13101591] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2021] [Revised: 09/22/2021] [Accepted: 09/27/2021] [Indexed: 11/24/2022] Open
Abstract
There have been many efforts to improve oral drug bioavailability and therapeutic efficacy and patient compliance. A variety of controlled-release oral delivery systems have been developed to meet these needs. Gastroretentive drug delivery technologies have the potential to achieve retention of the dosage form in the upper gastrointestinal tract (GIT) that can be sufficient to ensure complete solubilisation of the drugs in the stomach fluids, followed by subsequent absorption in the stomach or proximal small intestine. This can be beneficial for drugs that have an “absorption window” or are absorbed to a different extent in various segments of the GIT. Therefore, gastroretentive technologies in tandem with controlled-release strategies could enhance both the therapeutic efficacy of many drugs and improve patient compliance through a reduction in dosing frequency. The paper reviews different gastroretentive drug delivery technologies and controlled-release strategies that can be combined and summarises examples of formulations currently in clinical development and commercially available gastroretentive controlled-release products. The different parameters that need to be considered and monitored during formulation development for these pharmaceutical applications are highlighted.
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Meng H, Jin W, Yu L, Xu S, Wan H, He Y. Protective effects of polysaccharides on cerebral ischemia: A mini-review of the mechanisms. Int J Biol Macromol 2020; 169:463-472. [PMID: 33347928 DOI: 10.1016/j.ijbiomac.2020.12.124] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 12/15/2020] [Accepted: 12/16/2020] [Indexed: 02/08/2023]
Abstract
Cerebral ischemia, a common cerebrovascular disease, is one of the great threats to human health. Nowadays, many drugs used in the treatment of cerebral ischemia such as clot busting drugs, antiplatelet drugs, and neuroprotective drugs have limits. It is urgent finding new effective treatments for the patients. Researches have confirmed that many kinds of polysaccharides from natural resources possess therapeutic effects on cerebral ischemia, but are still lack of a comprehensively understanding. In this paper, based on the pathophysiology of cerebral ischemic injury, we summarize the latest discoveries and advancements of 29 kinds of polysaccharides, focusing on their ameliorating effects on cerebral ischemia and the underlying mechanisms. Several mechanisms are involved, mainly including antioxidant activities, anti-inflammatory activities, regulating neuron apoptosis, as well as resisting nitrosative stress injury. Besides, polysaccharides show protective effects through certain signaling pathways including PI3K/Akt, MAPK, and NF-κB, PARP-1/AIF, JNK3/c-Jun/Fas-L, and Nrf2/HO-1 signaling pathways. The main goal of this mini-review is to emphasize the important roles of polysaccharides in attenuating cerebral ischemic injury through the elucidation of mechanisms.
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Affiliation(s)
- Huanhuan Meng
- College of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - Weifeng Jin
- College of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - Li Yu
- College of Life Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - Shouchao Xu
- College of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - Haitong Wan
- College of Life Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, China.
| | - Yu He
- College of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, China.
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6
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Nanostructured lipid carriers as oral delivery systems for improving oral bioavailability of nintedanib by promoting intestinal absorption. Int J Pharm 2020; 586:119569. [DOI: 10.1016/j.ijpharm.2020.119569] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Revised: 05/22/2020] [Accepted: 06/19/2020] [Indexed: 11/21/2022]
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7
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Wu Y, Zhang W, Huang J, Luo Z, Li J, Wang L, Di L. Mucoadhesive improvement of alginate microspheres as potential gastroretentive delivery carrier by blending with Bletilla striata polysaccharide. Int J Biol Macromol 2019; 156:1191-1201. [PMID: 31756485 DOI: 10.1016/j.ijbiomac.2019.11.156] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2019] [Revised: 11/18/2019] [Accepted: 11/18/2019] [Indexed: 11/15/2022]
Abstract
As polysaccharide from Bletilla striata (BSP) was anticipated with mucoadhesive improvement in sodium alginate (SA) microspheres, BSP was mixed with SA to construct a composite microsphere to retain in the gastrointestinal tract for a long time. The morphological properties, particle size and thermodynamic properties of the microspheres in combination with comprehensive evaluations in the swelling properties, mucin adsorption, ex vivo and in vivo gastric retention were determined to characterize the mucoadhesion of SA-BSP blend microspheres. Results showed that the prepared microspheres were discrete and spherical. The addition of BSP increased flexibility and reduced rigidity of SA microsphere. Furthermore, the swelling property, mucin adsorption ability and the retention rate on the gastric mucosa of SA matrix were increased after blending with BSP. Mucoadhesion tests showed the SA-BSP microspheres stayed much longer in rats' stomach than the SA microsphere did. Above all, the SA-BSP microspheres with the enhanced mucoadhesion suggested being a potential drug carrier in developing the gastroretentive drug delivery system.
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Affiliation(s)
- Yujia Wu
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing City, Jiangsu Province 210023, PR China; Jiangsu Engineering Research Center for Efficient Delivery System of TCM, Nanjing City, Jiangsu Province 210023, PR China
| | - Wen Zhang
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing City, Jiangsu Province 210023, PR China; Jiangsu Engineering Research Center for Efficient Delivery System of TCM, Nanjing City, Jiangsu Province 210023, PR China
| | - Jianyu Huang
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing City, Jiangsu Province 210023, PR China; Jiangsu Engineering Research Center for Efficient Delivery System of TCM, Nanjing City, Jiangsu Province 210023, PR China
| | - Zichen Luo
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing City, Jiangsu Province 210023, PR China; Jiangsu Engineering Research Center for Efficient Delivery System of TCM, Nanjing City, Jiangsu Province 210023, PR China
| | - Junsong Li
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing City, Jiangsu Province 210023, PR China; Jiangsu Engineering Research Center for Efficient Delivery System of TCM, Nanjing City, Jiangsu Province 210023, PR China
| | - Lingchong Wang
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing City, Jiangsu Province 210023, PR China; Jiangsu Engineering Research Center for Efficient Delivery System of TCM, Nanjing City, Jiangsu Province 210023, PR China.
| | - Liuqing Di
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing City, Jiangsu Province 210023, PR China; Jiangsu Engineering Research Center for Efficient Delivery System of TCM, Nanjing City, Jiangsu Province 210023, PR China.
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Cao SJ, Xu S, Wang HM, Ling Y, Dong J, Xia RD, Sun XH. Nanoparticles: Oral Delivery for Protein and Peptide Drugs. AAPS PharmSciTech 2019; 20:190. [PMID: 31111296 PMCID: PMC6527526 DOI: 10.1208/s12249-019-1325-z] [Citation(s) in RCA: 138] [Impact Index Per Article: 27.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2018] [Accepted: 01/31/2019] [Indexed: 12/31/2022] Open
Abstract
Protein and peptide drugs have many advantages, such as high bioactivity and specificity, strong solubility, and low toxicity. Therefore, the strategies for improving the bioavailability of protein peptides are reviewed, including chemical modification of nanocarriers, absorption enhancers, and mucous adhesion systems. The status, advantages, and disadvantages of various strategies are systematically analyzed. The systematic and personalized design of various factors affecting the release and absorption of drugs based on nanoparticles is pointed out. It is expected to design a protein peptide oral delivery system that can be applied in the clinic.
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Affiliation(s)
- Shu-Jun Cao
- Pharmacy College of Qingdao University, Qingdao, 266021, China
| | - Shuo Xu
- Stomatology College of Qingdao University, Qingdao, 266021, China
| | - Hui-Ming Wang
- Affiliated Hospital of Qingdao University, Qingdao, 266555, China
| | - Yong Ling
- Affiliated Hospital of Qingdao University, Qingdao, 266555, China
| | - Jiahua Dong
- Affiliated Hospital of Qingdao University, Qingdao, 266555, China
| | - Rui-Dong Xia
- Pharmacy College of Qingdao University, Qingdao, 266021, China
| | - Xiang-Hong Sun
- Affiliated Hospital of Qingdao University, Qingdao, 266555, China.
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9
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Zhu CY, Wang JY, Huang J, Han GH, Ji YY, Zhang XR, Liang D. Preparation and evaluation of gastro-floating hollow adhesive microspheres of carbomer/ethyl cellulose encapsulating dipyridamole. NEW J CHEM 2019. [DOI: 10.1039/c8nj06398b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Gastro-floating hollow adhesive microspheres of Carbomer/ethyl cellulose encapsulating dipyridamole were fabricated and evaluated in vitro and in vivo.
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Affiliation(s)
- Cheng-Yun Zhu
- School of Pharmacy
- Shenyang Pharmaceutical University
- Shenyang 110016
- China
| | - Jin-Yue Wang
- School of Traditional Chinese Materia Medica
- Shenyang Pharmaceutical University
- Shenyang 110016
- P. R. China
| | - Jin Huang
- School of Traditional Chinese Materia Medica
- Shenyang Pharmaceutical University
- Shenyang 110016
- P. R. China
| | - Guo-Hua Han
- School of Pharmacy
- Shenyang Pharmaceutical University
- Shenyang 110016
- China
| | - Yan-Yan Ji
- School of Pharmacy
- Shenyang Pharmaceutical University
- Shenyang 110016
- China
| | - Xiang-Rong Zhang
- School of Functional Food and Wine
- Shenyang Pharmaceutical University
- Shenyang 110016
- P. R. China
- State Key Laboratory of Medicinal Resources
| | - Dong Liang
- State Key Laboratory of Medicinal Resources
- Chemistry and Molecular Engineering
- Guangxi Normal University
- Gui Lin 541006
- P. R. China
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10
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Abouelatta SM, Aboelwafa AA, El-Gazayerly ON. Gastroretentive raft liquid delivery system as a new approach to release extension for carrier-mediated drug. Drug Deliv 2018; 25:1161-1174. [PMID: 29792353 PMCID: PMC6058684 DOI: 10.1080/10717544.2018.1474969] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2018] [Revised: 05/05/2018] [Accepted: 05/07/2018] [Indexed: 10/26/2022] Open
Abstract
Gabapentin (GBP), an antiepileptic and anti-neuropathic agent, suffers from short half-life (5-7 h), has narrow absorption window, and is absorbed via carrier-mediated mechanism resulting in frequent dosing, poor compliance, and poor bioavailability (<60%). Moreover, GBP is a freely water-soluble drug, thus it is considered a challenging candidate to be formulated as extended release dosage form. In this study, raft forming systems were investigated as a potential drug delivery system for prolonging gastric residence time of GBP. A 23 full factorial design was adopted to study the effect of formulation variables (% gellan gum, % GMO, and % LM-pectin 101), on the percent of GBP released at different time intervals (1, 5, and 8 h) as well as the gel strength, and thus was achieved an optimized formula with zero-order release profile suitable for once-daily administration. In vivo assessment was performed in rats to evaluate gastric residence of the gel formed. In addition, the oral bioavailability of GBP relative to commercially available Neurontin® immediate release oral solution was also investigated. Significant increase was observed for Cmax, AUC(0-t), and AUC(0-∞). The increase in relative bioavailability of GBP from the optimized formula was 1.7 folds.
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Affiliation(s)
- Samar M Abouelatta
- a Department of Pharmaceutics, Faculty of Pharmacy , Ahram Canadian University , Cairo , Egypt
| | - Ahmed A Aboelwafa
- b Department of Pharmaceutics, Faculty of Pharmacy , Cairo University , Cairo , Egypt
| | - Omaima N El-Gazayerly
- b Department of Pharmaceutics, Faculty of Pharmacy , Cairo University , Cairo , Egypt
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11
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Li P, Hao J, Li H, Guan H, Li C. Development of an enteric nanoparticle of marine sulfated polysaccharide propylene glycol alginate sodium sulfate for oral administration: formulation design, pharmacokinetics and efficacy. J Pharm Pharmacol 2018. [PMID: 29532471 DOI: 10.1111/jphp.12902] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
OBJECTIVES Propylene glycol alginate sodium sulfate (PSS) is poorly absorbed by oral administration due to its large molecular weight and slightly degradability in stomach acidic environment. Here, a novel enteric-coated nano formulation of PSS (enteric PSS-NP) was prepared to improve its bioavailability and efficacy. METHODS The enteric PSS-NP was prepared by double (W1 /O/W2 ) emulsion and solvent evaporation method. The drug release characteristics in vitro were studied in artificial gastrointestinal fluid. And the pharmacokinetics and efficacy of enteric PSS-NP were separately investigated in normal rats and type 2 diabetic db/db mice. KEY FINDINGS The enteric PSS-NP were in spherical shape and exhibited negative zeta potential. The releasing characteristics of enteric PSS-NP in vitro showed that it possessed a strong pH-sensitive release character. Single-dose (50 mg/kg) oral pharmacokinetic study in rat plasma showed that enteric PSS-NP could improve the relative bioavailability significantly compared with PSS solution. Furthermore, the efficacy of enteric PSS-NP in vivo was better than that of PSS solution at equivalent doses. CONCLUSIONS The study showed that enteric-coated formulation of PSS had the intestinal-targeted absorption and improved pharmacodynamics, which indicated that enteric PSS-NP could be developed into a new formulation product in the future.
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Affiliation(s)
- Pengli Li
- Key Laboratory of Marine Drugs, Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao, China.,Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, Ocean University of China, Qingdao, China.,Marine Biomedical Research Institute of Qingdao, Qingdao, China
| | - Jiejie Hao
- Key Laboratory of Marine Drugs, Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao, China.,Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, Ocean University of China, Qingdao, China
| | - Haihua Li
- Key Laboratory of Marine Drugs, Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao, China.,Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, Ocean University of China, Qingdao, China
| | - Huashi Guan
- Key Laboratory of Marine Drugs, Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao, China.,Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, Ocean University of China, Qingdao, China.,Marine Biomedical Research Institute of Qingdao, Qingdao, China.,Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, Ocean University of China, Qingdao, China
| | - Chunxia Li
- Key Laboratory of Marine Drugs, Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao, China.,Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, Ocean University of China, Qingdao, China.,Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, Ocean University of China, Qingdao, China
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12
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Wang J, Hao S, Luo T, Yang Q, Wang B. Development of feather keratin nanoparticles and investigation of their hemostatic efficacy. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 68:768-773. [DOI: 10.1016/j.msec.2016.07.035] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2016] [Revised: 06/28/2016] [Accepted: 07/16/2016] [Indexed: 11/25/2022]
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13
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Mandal UK, Chatterjee B, Senjoti FG. Gastro-retentive drug delivery systems and their in vivo success: A recent update. Asian J Pharm Sci 2016. [DOI: 10.1016/j.ajps.2016.04.007] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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14
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Baek JS, Choo CC, Qian C, Tan NS, Shen Z, Loo SCJ. Multi-Drug-Loaded Microcapsules with Controlled Release for Management of Parkinson's Disease. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2016; 12:3712-3722. [PMID: 27253884 DOI: 10.1002/smll.201600067] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2016] [Revised: 04/05/2016] [Indexed: 06/05/2023]
Abstract
Parkinson's disease (PD) is a progressive disease of the nervous system, and is currently managed through commercial tablets that do not sufficiently enable controlled, sustained release capabilities. It is hypothesized that a drug delivery system that provides controlled and sustained release of PD drugs would afford better management of PD. Hollow microcapsules composed of poly-l-lactide (PLLA) and poly (caprolactone) (PCL) are prepared through a modified double-emulsion technique. They are loaded with three PD drugs, i.e., levodopa (LD), carbidopa (CD), and entacapone (ENT), at a ratio of 4:1:8, similar to commercial PD tablets. LD and CD are localized in both the hollow cavity and PLLA/PCL shell, while ENT is localized in the PLLA/PCL shell. Release kinetics of hydrophobic ENT is observed to be relatively slow as compared to the other hydrophilic drugs. It is further hypothesized that encapsulating ENT into PCL as a surface coating onto these microcapsules can aid in accelerating its release. Now, these spray-coated hollow microcapsules exhibit similar release kinetics, according to Higuchi's rate, for all three drugs. The results suggest that multiple drug encapsulation of LD, CD, and ENT in gastric floating microcapsules could be further developed for in vivo evaluation for the management of PD.
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Affiliation(s)
- Jong-Suep Baek
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798
| | - Chee Chong Choo
- School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, Singapore, 637551
| | - Cheng Qian
- School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371
| | - Nguan Soon Tan
- School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, Singapore, 637551
| | - Zexiang Shen
- School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371
| | - Say Chye Joachim Loo
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798
- Singapore Centre on Environmental Life Sciences Engineering (SCELSE), Nanyang Technological University, 60 Nanyang Drive, Singapore, 637551
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15
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Overview on gastroretentive drug delivery systems for improving drug bioavailability. Int J Pharm 2016; 510:144-58. [PMID: 27173823 DOI: 10.1016/j.ijpharm.2016.05.016] [Citation(s) in RCA: 133] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2015] [Revised: 05/05/2016] [Accepted: 05/06/2016] [Indexed: 02/06/2023]
Abstract
In recent decades, many efforts have been made in order to improve drug bioavailability after oral administration. Gastroretentive drug delivery systems are a good example; they emerged to enhance the bioavailability and effectiveness of drugs with a narrow absorption window in the upper gastrointestinal tract and/or to promote local activity in the stomach and duodenum. Several strategies are used to increase the gastric residence time, namely bioadhesive or mucoadhesive systems, expandable systems, high-density systems, floating systems, superporous hydrogels and magnetic systems. The present review highlights some of the drugs that can benefit from gastroretentive strategies, such as the factors that influence gastric retention time and the mechanism of action of gastroretentive systems, as well as their classification into single and multiple unit systems.
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16
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Zhang C, Tang J, Liu D, Li X, Cheng L, Tang X. Design and evaluation of an innovative floating and bioadhesive multiparticulate drug delivery system based on hollow structure. Int J Pharm 2016; 503:41-55. [PMID: 26943975 DOI: 10.1016/j.ijpharm.2016.02.045] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2015] [Revised: 02/15/2016] [Accepted: 02/28/2016] [Indexed: 11/19/2022]
Abstract
In this study a gastric-retentive delivery system was prepared by a novel method which is reported here for the first time. An innovative floating and bioadhesive drug delivery system with a hollow structure was designed and prepared. The floating and bioadhesive drug delivery system was composed of a hollow spherical shell, a waterproof layer (Stearic acid), a drug layer (Ofloxacin), a release retarding film (the novel blended coating materials) and a bioadhesive layer (Carbomer 934P) prepared by using a liquid multi-layering process. A novel blended coating material was designed and investigated to solve the problem of the initial burst release of the formulation and the release mechanism of the novel material was analyzed in this study. The optimized formulation provided the sustained release characteristic and was able to float for 24h. The SEM cross-section images showed that the particulates were hollow with a spherical shell. X-ray images and pharmacokinetic studies (Frel = 124.1 ± 28.9%) in vivo showed that the gastric-retentive delivery system can be retained in the stomach for more than 6h. The floating and bioadhesive particulate drug delivery system based on a hollow structure with a dual function presented here is a viable alternative to other for gastroretentive drug delivery system.
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Affiliation(s)
- Chungang Zhang
- College of Pharmacy, Liaoning University of Traditional Chinese Medicine, Dalian, China.
| | - Jingya Tang
- Department of Pharmacy, The Third Hospital of Dalian Medical University, Dalian, China
| | - Dechun Liu
- Department of Pharmaceutics, Shenyang Pharmaceutical University, Shenyang, China
| | - Xuetao Li
- College of Pharmacy, Liaoning University of Traditional Chinese Medicine, Dalian, China
| | - Lan Cheng
- College of Pharmacy, Liaoning University of Traditional Chinese Medicine, Dalian, China
| | - Xing Tang
- Department of Pharmaceutics, Shenyang Pharmaceutical University, Shenyang, China
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Patil SS, Roy K, Choudhary B, Mahadik KR. Fabrication of novel GMO/Eudragit E100 nanostructures for enhancing oral bioavailability of carvedilol. Drug Dev Ind Pharm 2016; 42:1300-7. [PMID: 26651381 DOI: 10.3109/03639045.2015.1128440] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
In the present work, novel nanostructures comprising of glyceryl monooleate (GMO) and Eudragit E100 were prepared using high intensity ultrasonic homogenization. 3(2) Factorial design approach was used for optimization of nanostructures. Results of regression analysis revealed that the amount of GMO and Eudragit E100 had a drastic effect on particle size and percent entrapment efficiency. Optimized carvedilol-loaded nanostructures (Car-NS) were characterized by FTIR, TEM, DSC, in vitro drug release study. Pharmacokinetic parameters such as Cmax, Tmax, Ke, Ka, Vd and AUC were estimated for Car-NS upon its oral administration in Sprague-Dawley rats. Particle size of Car-NS was found to be 183 ± 2.43 nm with an entrapment efficiency of 81.4 ± 0.512%. FTIR studies revealed loading and chemical compatibility of carvedilol with the components of nanostructures. DSC thermograms did not show endothermic peak for melting of carvedilol which could be attributed to solubilization of carvedilol in molten GMO during DSC run. The prepared Car-NS released carvedilol in sustained manner over a period of 10 h as suggested by in vitro drug release study. The pharmacokinetic study of Car-NS showed significant improvement in Cmax (two fold, p < 0.001) and AUC (four folds, p < 0.001) of carvedilol when compared to carvedilol suspension. Car-NS were found to be stable for a period of 3 months. Thus, a stable, floating, multiparticulate GMO/Eudragit E100 nanostructures having ability to release the drug in sustained manner with enhanced oral bioavailability can prove to be a promising carrier system for poorly water soluble drugs.
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Affiliation(s)
- Sharvil S Patil
- a Department of Pharmaceutics , Poona College of Pharmacy, Bharati Vidyapeeth Deemed University , Pune , Maharashtra , India
| | - Krishtey Roy
- a Department of Pharmaceutics , Poona College of Pharmacy, Bharati Vidyapeeth Deemed University , Pune , Maharashtra , India
| | - Bhavana Choudhary
- a Department of Pharmaceutics , Poona College of Pharmacy, Bharati Vidyapeeth Deemed University , Pune , Maharashtra , India
| | - Kakasaheb R Mahadik
- a Department of Pharmaceutics , Poona College of Pharmacy, Bharati Vidyapeeth Deemed University , Pune , Maharashtra , India
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18
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Recent progresses in bioadhesive microspheres via transmucosal administration. Colloids Surf B Biointerfaces 2015; 140:361-372. [PMID: 26774569 DOI: 10.1016/j.colsurfb.2015.12.049] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2015] [Revised: 12/05/2015] [Accepted: 12/26/2015] [Indexed: 01/04/2023]
Abstract
Based on the advantages of adhesion preparations and the application status of microspheres (MSs) in mucous delivery, this paper primarily reviews the bioadhesive MSs via transmucosal administration routes, including the mucosa in alimentary tract and other lumens. Particularly, the detailed researches about of celladhesive MSs and some new-style bioadhesive MSs are mentioned. Furthermore, this review attempts to reveal the advances of bioadhesive MSs as cell-selective bioadhesion systems and the stimuli-responsive MSs as location-specific drug delivery systems. Although these MSs show powerful strength, some far-sighted ideas should be brought on agendas. In the future, mechanisms should be put under tight scrutiny and more attention should be focused on the excellent bioadhesive materials and the 'second generation mucoadhesives'. Meaningful clinical applications of these novel MSs are also of current concerns and need more detailed researches.
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Exploring the Phase Behavior of Monoolein/Oleic Acid/Water Systems for Enhanced Donezepil Administration for Alzheimer Disease Treatment. J Pharm Sci 2015; 105:71-7. [PMID: 26852841 DOI: 10.1016/j.xphs.2015.10.016] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2015] [Revised: 10/08/2015] [Accepted: 10/14/2015] [Indexed: 01/08/2023]
Abstract
Donepezil is a drug usually administered by oral route for Alzheimer disease treatment, but several gastric side effects have been reported as diarrhea, nausea, and anorexia. We explored the phase behavior of lyotropic liquid crystalline (LLC) mesophases composed by monoolein/oleic acid/water for enhanced administration of donepezil. Polarized light microscopy suggested that these systems ranged from isotropic inverse micellar solutions (L2) to viscous and birefringent reverse hexagonal (HII) mesophases according to the amount of water in the ternary systems. Phase transition was observed from a L2 phase to HII mesophase after swelling studies, an interesting property to be explored as a precursor of LLC mesophases for mucosal administration that increases its viscosity in situ. Mucoadhesive properties of LLC mesophases were characterized using a texture analyzer indicating that these systems can have an increased residence time in the site of absorption. Donepezil-free base was incorporated in the evaluated formulations, and their in vitro release was controlled up to 24 h. The phase behavior of the systems demonstrated a great potential for enhanced donepezil administration once these mucoadhesive-controlled release formulations can incorporate the drug and prolong its release, possibly reducing its side effects.
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20
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Supercritical fluid precipitation of ketoprofen in novel structured lipid carriers for enhanced mucosal delivery – a comparison with solid lipid particles. Int J Pharm 2015; 495:302-311. [DOI: 10.1016/j.ijpharm.2015.08.026] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2015] [Revised: 08/05/2015] [Accepted: 08/08/2015] [Indexed: 11/18/2022]
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21
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Malode VN, Paradkar A, Devarajan PV. Controlled release floating multiparticulates of metoprolol succinate by hot melt extrusion. Int J Pharm 2015; 491:345-51. [PMID: 26142246 DOI: 10.1016/j.ijpharm.2015.06.045] [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] [Received: 05/20/2015] [Revised: 06/23/2015] [Accepted: 06/24/2015] [Indexed: 10/24/2022]
Abstract
We present hot melt extrusion (HME) for the design of floating multiparticulates. Metoprolol succinate was selected as the model drug. Our foremost objective was to optimize the components Eudragit(®) RS PO, polyethylene oxide (PEO) and hydroxypropyl methylcellulose (HPMC) to balance both buoyancy and controlled release. Gas generated by sodium bicarbonate in acidic medium was trapped in the polymer matrix to enable floating. Eudragit(®) RS PO and PEO with sodium bicarbonate resulted in multiparticulates which exhibited rapid flotation within 3 min but inadequate total floating time (TFT) of 3h. Addition of HPMC to the matrix did not affect floating lag time (FLT), moreover TFT increased to more than 12h with controlled release of metoprolol succinate. Floating multiparticulates exhibited t50% of 5.24h and t90% of 10.12h. XRD and DSC analysis revealed crystalline state of drug while FTIR suggested nonexistence of chemical interaction between the drug and the other excipients. The assay, FLT, TFT and the drug release of the multiparticulates were unchanged when stored at 40°C/75%RH for 3 months confirming stability. We present floating multiparticulates by HME which could be extrapolated to a range of other drugs. Our approach hence presents platform technology for floating multiparticulates.
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Affiliation(s)
- Vilas N Malode
- Department of Pharmaceutical Sciences and Technology, Institute of Chemical Technology, N.P. Marg, Matunga (E), Mumbai 400019, Maharashtra, India
| | - Anant Paradkar
- Centre for Pharmaceutical Engineering Sciences, University of Bradford, Richmond Road, Bradford, Yorkshire BD7 1DP, United Kingdom
| | - Padma V Devarajan
- Department of Pharmaceutical Sciences and Technology, Institute of Chemical Technology, N.P. Marg, Matunga (E), Mumbai 400019, Maharashtra, India.
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22
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Tran N, Mulet X, Hawley AM, Hinton TM, Mudie ST, Muir BW, Giakoumatos EC, Waddington LJ, Kirby NM, Drummond CJ. Nanostructure and cytotoxicity of self-assembled monoolein–capric acid lyotropic liquid crystalline nanoparticles. RSC Adv 2015. [DOI: 10.1039/c5ra02604k] [Citation(s) in RCA: 76] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Monoolein–capric acid combinations form into particles with internal nanostructures, including inverse hexagonal and bicontinuous cubic mesophases, with differing cytotoxicity.
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Affiliation(s)
- Nhiem Tran
- CSIRO Manufacturing Flagship
- Clayton
- 3168 Australia
- SAXS/WAXS beamline
- Australian Synchrotron
| | - Xavier Mulet
- CSIRO Manufacturing Flagship
- Clayton
- 3168 Australia
| | | | - Tracey M. Hinton
- CSIRO Animal, Food and Health Sciences
- Australian Animal Health Laboratory
- East Geelong
- 3219 Australia
| | | | | | | | | | - Nigel M. Kirby
- SAXS/WAXS beamline
- Australian Synchrotron
- Clayton
- 3168 Australia
| | - Calum J. Drummond
- CSIRO Manufacturing Flagship
- Clayton
- 3168 Australia
- School of Applied Sciences
- College of Science, Engineering and Health
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23
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Lee WL, Tan JWM, Tan CN, Loo SCJ. Modulating drug release from gastric-floating microcapsules through spray-coating layers. PLoS One 2014; 9:e114284. [PMID: 25470374 PMCID: PMC4254999 DOI: 10.1371/journal.pone.0114284] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2014] [Accepted: 11/09/2014] [Indexed: 11/19/2022] Open
Abstract
Floating dosage forms with prolonged gastric residence time have garnered much interest in the field of oral delivery. However, studies had shown that slow and incomplete release of hydrophobic drugs during gastric residence period would reduce drug absorption and cause drug wastage. Herein, a spray-coated floating microcapsule system was developed to encapsulate fenofibrate and piroxicam, as model hydrophobic drugs, into the coating layers with the aim of enhancing and tuning drug release rates. Incorporating fenofibrate into rubbery poly(caprolactone) (PCL) coating layer resulted in a complete and sustained release for up to 8 h, with outermost non-drug-holding PCL coating layer serving as a rate-controlling membrane. To realize a multidrug-loaded system, both hydrophilic metformin HCl and hydrophobic fenofibrate were simultaneously incorporated into these spray-coated microcapsules, with metformin HCl and fenofibrate localized within the hollow cavity of the capsule and coating layer, respectively. Both drugs were observed to be completely released from these coated microcapsules in a sustained manner. Through specific tailoring of coating polymers and their configurations, piroxicam loaded in both the outer polyethylene glycol and inner PCL coating layers was released in a double-profile manner (i.e. an immediate burst release as the loading dose, followed by a sustained release as the maintenance dose). The fabricated microcapsules exhibited excellent buoyancy in simulated gastric fluid, and provided controlled and sustained release, thus revealing its potential as a rate-controlled oral drug delivery system.
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Affiliation(s)
- Wei Li Lee
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798 Singapore, Singapore
| | - Jun Wei Melvin Tan
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798 Singapore, Singapore
| | - Chaoyang Nicholas Tan
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798 Singapore, Singapore
| | - Say Chye Joachim Loo
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798 Singapore, Singapore
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24
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Lopes D, Nunes C, Martins MCL, Sarmento B, Reis S. Eradication of Helicobacter pylori: Past, present and future. J Control Release 2014; 189:169-86. [PMID: 24969353 DOI: 10.1016/j.jconrel.2014.06.020] [Citation(s) in RCA: 75] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2014] [Revised: 06/12/2014] [Accepted: 06/13/2014] [Indexed: 02/07/2023]
Abstract
Helicobacter pylori is the major cause of chronic gastritis and peptic ulcers. Since the classification as a group 1 carcinogenic by International Agency for Research on Cancer, the importance of the complete H. pylori eradication has obtained a novel meaning. Hence, several studies have been made in order to deepen the knowledge in therapy strategies. However, the current therapy presents unsatisfactory eradication rates due to the lack of therapeutic compliance, antibiotic resistance, the degradation of antibiotics at gastric pH and their insufficient residence time in the stomach. Novel approaches have been made in order to overcome these limitations. The purpose of this review is to provide an overview about the current therapy and its limitations, while highlighting the possibility of using micro- and nanotechnology to develop gastric drug delivery systems, overcoming these difficulties in the future.
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Affiliation(s)
- Daniela Lopes
- REQUIMTE, Departamento de Ciências Químicas, Faculdade de Farmácia, Universidade do Porto, Porto, Portugal
| | - Cláudia Nunes
- REQUIMTE, Departamento de Ciências Químicas, Faculdade de Farmácia, Universidade do Porto, Porto, Portugal
| | - M Cristina L Martins
- INEB - Instituto de Engenharia Biomédica, Universidade do Porto, Porto, Portugal; ICBAS - Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
| | - Bruno Sarmento
- INEB - Instituto de Engenharia Biomédica, Universidade do Porto, Porto, Portugal; IINFACTS - Instituto de Investigação e Formação Avançada em Ciências e Tecnologias da Saúde, Instituto Superior de Ciências da Saúde-Norte, Gandra-PRD, Portugal
| | - Salette Reis
- REQUIMTE, Departamento de Ciências Químicas, Faculdade de Farmácia, Universidade do Porto, Porto, Portugal.
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25
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Agrawal U, Sharma R, Gupta M, Vyas SP. Is nanotechnology a boon for oral drug delivery? Drug Discov Today 2014; 19:1530-46. [PMID: 24786464 DOI: 10.1016/j.drudis.2014.04.011] [Citation(s) in RCA: 86] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2014] [Revised: 03/12/2014] [Accepted: 04/22/2014] [Indexed: 12/14/2022]
Abstract
The oral route for drug delivery is regarded as the optimal route for achieving therapeutic benefits owing to increased patient compliance. Despite phenomenal advances in injectable, transdermal, nasal and other routes of administration, the reality is that oral drug delivery remains well ahead of the pack as the preferred delivery route. Nanocarriers can overcome the major challenges associated with this route of administration: mainly poor solubility, stability and biocompatibility of drugs. This review focuses on the potential of various polymeric drug delivery systems in oral administration, their pharmacokinetics, in vitro and in vivo models, toxicity and regulatory aspects.
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Affiliation(s)
- Udita Agrawal
- Drug Delivery Research Laboratory, Department of Pharmaceutical Sciences, Dr H.S. Gour Vishwavidyalaya, Sagar, MP 470003, India
| | - Rajeev Sharma
- Drug Delivery Research Laboratory, Department of Pharmaceutical Sciences, Dr H.S. Gour Vishwavidyalaya, Sagar, MP 470003, India
| | - Madhu Gupta
- Drug Delivery Research Laboratory, Department of Pharmaceutical Sciences, Dr H.S. Gour Vishwavidyalaya, Sagar, MP 470003, India
| | - Suresh P Vyas
- Drug Delivery Research Laboratory, Department of Pharmaceutical Sciences, Dr H.S. Gour Vishwavidyalaya, Sagar, MP 470003, India.
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26
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Hao S, Wang Y, Wang B. Sinking-magnetic microparticles prepared by the electrospray method for enhanced gastric antimicrobial delivery. Mol Pharm 2014; 11:1640-50. [PMID: 24679346 DOI: 10.1021/mp5000339] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
A targeted oral drug delivery system is useful to improve the treatment of gastrointestinal diseases. A high density sinking dosage form can sink to the bottom of the stomach near the pylori sections to enhance gastric retention. However, it is difficult to achieve a high density sinking system using the traditional technology. In the current study, novel stomach-specific sinking magnetic microparticles (SMMPs) were prepared via the monoaxial electrospray method for enhanced gastric antimicrobial delivery. The size of SMMPs was approximately 5 μm, and the Fe3O4 nanoparticles were observed in the SMMPs by transmission electron microscopy (TEM). The density of SMMPs increased as the concentration of Fe3O4 nanoparticles in the electrospray inlet flow increased, with the maximum true density of approximately 3.52 g/cm(3). The SMMPs displayed strong magnetism in vitro and in vivo. They can settle down in water within 120 s in vitro, and the settling time decreased to 20 s under a magnetic field. Furthermore, an in vivo γ scintigraphy study demonstrated that (131)I labeled SMMPs were retained in the stomach for over 8 h, and an external permanent magnet can increase their gastric retention time even further. Using Helicobacter pylori as a model bacterium, amoxicillin-loaded SMMPs exhibited a significantly greater eradication of H. pylori compared to the free drug, in vivo. Our results suggested that electrospray is an effective technique to prepare the high density gastroretentive dosage forms. We have shown that stomach-specific SMMPs can supply better treatment for H. pylori infections and have the potential to be used in clinical practice.
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Affiliation(s)
- Shilei Hao
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University , Chongqing 400030, China
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27
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Zhu X, Qi X, Wu Z, Zhang Z, Xing J, Li X. Preparation of multiple-unit floating-bioadhesive cooperative minitablets for improving the oral bioavailability of famotidine in rats. Drug Deliv 2014; 21:459-66. [PMID: 24456044 DOI: 10.3109/10717544.2013.879626] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract The aims of this study were to prepare fine famotidine-containing floating-bioadhesive cooperative minitablets and to investigate the possibility of using those minitablets as a delivery system for promoting the oral bioavailability of famotidine. Nine minitablet formulations were designed using hydroxypropylmethylcellulose (HPMC K4M) as release-retarding polymers, Carbopol 971P as bioadhesive materials and sodium bicarbonate (NaHCO3) as gas formers. The prepared 3 ± 0.02 mm minitablets were evaluated in terms of their swelling ability, floating behavior, bioadhesion test and in vitro release. The optimized minitablets (F6) containing HPMC K4M (50.00%, w/w), Carbopol 971P (10.00%, w/w) and NaHCO3 (10.00%, w/w) were found to float in 1 min and remain lastingly buoyant over a period of 8 h in vitro, with excellent bioadhesive properties (20.81 g) and sustained drug release characteristics (T50% = 46.54%) followed one-order model. In addition, plasma concentration-time profiles from pharmacokinetic studies in rats dosed with minitablets showed 1.62-fold (p < 0.05) increased absorption of famotidine, compared to the market tablets XinFaDing®. These studies demonstrated that the multiple-unit floating-bioadhesive cooperative minitablets may be a promising gastro-retentive delivery system for drugs that play a therapeutic role in the stomach.
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Affiliation(s)
- Xuehua Zhu
- Key Laboratory of Modern Chinese Medicines, China Pharmaceutical University , Nanjing , PR China and
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28
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Hao S, Wang Y, Wang B, Zou Q, Zeng H, Chen X, Liu X, Liu J, Yu S. A novel gastroretentive porous microparticle for anti-Helicobacter pylori therapy: preparation, in vitro and in vivo evaluation. Int J Pharm 2014; 463:10-21. [PMID: 24406672 DOI: 10.1016/j.ijpharm.2013.12.052] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2013] [Revised: 11/26/2013] [Accepted: 12/27/2013] [Indexed: 12/14/2022]
Abstract
Gastroretentive drug delivery system is a promising option for the treatment of Helicobacter pylori infection, which can prolong gastric residence time and supply high drug concentration in the stomach. In the present study, a low density system of metronidazole-loaded porous Eudragit® RS microparticle with high drug loading capacity (>25%) was fabricated via electrospray method. The porous structure and size distribution of microparticles were affected by polymer concentration and flow rate of solution. FTIR and XRD analyses indicated that drug has been entrapped into the porous microparticles. In addition, sustained release profiles and slight cytotoxicity in vitro were detected. Gamma scintigraphy study in vivo demonstrated that ¹³¹I-labeled microparticles retained in stomach for over 8h, and about 65.50% radioactive counts were finally detected in the region of interest. The biodistribution study confirmed that hotspot of radioactivity was remaining in the stomach. Furthermore, metronidazole-loaded porous microparticles can eradicate H. pylori completely with lower dose and administration frequency of antibiotic compared with pure drug, which were also more helpful for the healing of mucosal damages. These results suggest that prepared porous microparticle has the potential to provide better treatment for H. pylori infection.
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Affiliation(s)
- Shilei Hao
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400030, China
| | - Yazhou Wang
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400030, China
| | - Bochu Wang
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400030, China.
| | - Quanming Zou
- Department of Clinical Microbiology and Clinical Immunology, Third Military Medical University, Chongqing 400038, China
| | - Hao Zeng
- Department of Clinical Microbiology and Clinical Immunology, Third Military Medical University, Chongqing 400038, China
| | - Xiaoliang Chen
- Department of Nuclear Medicine, Chongqing Cancer Institution, Chongqing 400030, China
| | - Xi Liu
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400030, China
| | - Junyu Liu
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400030, China
| | - Songke Yu
- Department of Nuclear Medicine, Chongqing Cancer Institution, Chongqing 400030, China
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29
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Abdel Halim S, S.A.Yehia, El-Nabarawi M. Chromium picolinate loaded superporous hydrogel and superporous hydrogel composite as a controlled release device: in vitro and in vivo evaluation. J Drug Deliv Sci Technol 2014. [DOI: 10.1016/s1773-2247(14)50070-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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30
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Hao S, Wang B, Wang Y, Zhu L, Wang B, Guo T. Preparation of Eudragit L 100-55 enteric nanoparticles by a novel emulsion diffusion method. Colloids Surf B Biointerfaces 2013; 108:127-33. [DOI: 10.1016/j.colsurfb.2013.02.036] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2012] [Revised: 02/21/2013] [Accepted: 02/22/2013] [Indexed: 10/27/2022]
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32
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Glyceryl monooleate-coated bioadhesive hollow microspheres of riboflavin for improved gastroretentivity: optimization and pharmacokinetics. Drug Deliv Transl Res 2013; 3:209-23. [DOI: 10.1007/s13346-013-0143-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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33
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Design and Development of Novel Dual-Compartment Capsule for Improved Gastroretention. ISRN PHARMACEUTICS 2013; 2013:752471. [PMID: 23431476 PMCID: PMC3568882 DOI: 10.1155/2013/752471] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/30/2012] [Accepted: 12/11/2012] [Indexed: 12/04/2022]
Abstract
The aim of the proposed research work was to develop a novel dual-compartment capsule (NDCC) with polymeric disc for gastroretentive dosage form, which will ultimately result in better solubility and bioavailability of Ofloxacin. Floating ring caps were formulated by using different natural polymers, separating ring band and swellable polymer located at the bottom of capsule. Formulated ring caps were assessed for coating thickness, In vitro buoyancy, In vitro drug release, release kinetics and stability studies. Coating attained by the capsule shell was found to be 0.0643 mm. Depending on nature of natural polymer used, most of the formulations showed buoyancy for more than 9 hrs. Developed formulation demonstrated considerably higher drug release up to 9 hrs. The developed formulation FE2 depicted the drug release according to Korsmeyer-Peppas model. There was not any significant change in performance characteristics of developed ring caps after subjecting them to stability studies. The present study suggests that the use of NDCC for oral delivery of Ofloxacin could be an alternative to improve its systemic availability which could be regulated by the floating approach. The designed dosage system can have futuristic applications over payloads which require stomach-specific delivery.
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34
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Lee WL, Wee P, Nugraha C, Loo SCJ. Gastric-floating microcapsules provide controlled and sustained release of multiple cardiovascular drugs. J Mater Chem B 2013; 1:1090-1095. [PMID: 32260831 DOI: 10.1039/c2tb00495j] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Floating polymeric microcapsules that simultaneously entrap multiple drugs were prepared using a solid/water/oil/water emulsion solvent evaporation method, based on harnessing interfacial phenomena and manipulation of the solvent removal process. The fabricated microcapsules exhibited excellent buoyancy in simulated gastric fluid and provided controlled and sustained release of multiple drugs for up to 24 h, thus revealing their potential as a rate-controlled oral drug delivery system.
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Affiliation(s)
- Wei Li Lee
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798 Singapore.
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35
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Pawar VK, Asthana S, Mishra N, Chaurasia M, Chourasia MK. Chitosan coated hydroxypropyl methylcellulose-ethylcellulose shell based gastroretentive dual working system to improve the bioavailability of norfloxacin. RSC Adv 2013. [DOI: 10.1039/c3ra42726a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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36
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Bhadouriya P, Kumar M, Pathak K. Formulation andin vitroevaluation of prolonged release floating microspheres of atenolol using multicompartment dissolution apparatus. Drug Dev Ind Pharm 2012; 39:1663-71. [DOI: 10.3109/03639045.2012.729592] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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37
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Bani-Jaber A, Hamdan I, Alkawareek M. The synthesis and characterization of fatty acid salts of chitosan as novel matrices for prolonged intragastric drug delivery. Arch Pharm Res 2012; 35:1159-68. [DOI: 10.1007/s12272-012-0706-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2010] [Revised: 03/13/2011] [Accepted: 04/06/2011] [Indexed: 11/30/2022]
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