1
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Sheikhi M, Nemayandeh N, Shirangi M. Peptide Acylation in Aliphatic Polyesters: a Review of Mechanisms and Inhibition Strategies. Pharm Res 2024; 41:765-778. [PMID: 38504074 DOI: 10.1007/s11095-024-03682-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Accepted: 02/24/2024] [Indexed: 03/21/2024]
Abstract
Biodegradable polyesters are widely employed in the development of controlled release systems for peptide drugs. However, one of the challenges in developing a polyester-based delivery system for peptides is the acylation reaction between peptides and polymers. Peptide acylation is an important factor that affects formulation stability and can occur during storage, in vitro release, and after drug administration. This review focuses on the mechanisms and parameters that influence the rate of peptide acylation within polyesters. Furthermore, it discusses reported strategies to minimize the acylation reaction.
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Affiliation(s)
- Mojgan Sheikhi
- Department of Drug and Food Control, Faculty of Pharmacy, Tehran University of Medical Science Tehran, Tehran, Iran
| | - Nasrin Nemayandeh
- Department of Drug and Food Control, Faculty of Pharmacy, Tehran University of Medical Science Tehran, Tehran, Iran
| | - Mehrnoosh Shirangi
- Department of Drug and Food Control, Faculty of Pharmacy, Tehran University of Medical Science Tehran, Tehran, Iran.
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2
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Fan M, Huang Y, Zhu X, Zheng J, Du M. Octreotide and Octreotide-derived delivery systems. J Drug Target 2023; 31:569-584. [PMID: 37211679 DOI: 10.1080/1061186x.2023.2216895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 04/01/2023] [Accepted: 04/29/2023] [Indexed: 05/23/2023]
Abstract
Pharmaceutical peptide Octreotide is a somatostatin analog with targeting and therapeutic abilities. Over the last decades, Octreotide has been developed and approved to treat acromegaly and neuroendocrine tumours, and Octreotide-based radioactive conjugates have been leveraged clinically to detect small neuroendocrine tumour sites. Meanwhile, variety of Octreotide-derived delivery strategies have been proposed and explored for tumour targeted therapeutics or diagnostics in preclinical or clinical settings. In this review, we especially focus on the preclinical development and applications of Octreotide-derived drug delivery systems, diagnostic nanosystems, therapeutic nanosystems and multifunctional nanosystems, we also briefly discuss challenges and prospects of these Octreotide-derived delivery systems.
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Affiliation(s)
- Mingliang Fan
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, China
| | - Yue Huang
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, China
| | - Xinlin Zhu
- Department of Dermatology, Shanghai Key Laboratory of Medical Mycology, Changzheng Hospital, Naval Medical University, Shanghai, China
| | - Jiayu Zheng
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, China
| | - Mingwei Du
- Department of Dermatology, Shanghai Key Laboratory of Medical Mycology, Changzheng Hospital, Naval Medical University, Shanghai, China
- Department of Cardiology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai Key Laboratory of Traditional Chinese Clinical Medicine, Shanghai, China
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3
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Gastrointestinal Permeation Enhancers for the Development of Oral Peptide Pharmaceuticals. Pharmaceuticals (Basel) 2022; 15:ph15121585. [PMID: 36559036 PMCID: PMC9781085 DOI: 10.3390/ph15121585] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 12/09/2022] [Accepted: 12/16/2022] [Indexed: 12/23/2022] Open
Abstract
Recently, two oral-administered peptide pharmaceuticals, semaglutide and octreotide, have been developed and are considered as a breakthrough in peptide and protein drug delivery system development. In 2019, the Food and Drug Administration (FDA) approved an oral dosage form of semaglutide developed by Novo Nordisk (Rybelsus®) for the treatment of type 2 diabetes. Subsequently, the octreotide capsule (Mycapssa®), developed through Chiasma's Transient Permeation Enhancer (TPE) technology, also received FDA approval in 2020 for the treatment of acromegaly. These two oral peptide products have been a significant success; however, a major obstacle to their oral delivery remains the poor permeability of peptides through the intestinal epithelium. Therefore, gastrointestinal permeation enhancers are of great relevance for the development of subsequent oral peptide products. Sodium salcaprozate (SNAC) and sodium caprylate (C8) have been used as gastrointestinal permeation enhancers for semaglutide and octreotide, respectively. Herein, we briefly review two approved products, Rybelsus® and Mycapssa®, and discuss the permeation properties of SNAC and medium chain fatty acids, sodium caprate (C10) and C8, focusing on Eligen technology using SNAC, TPE technology using C8, and gastrointestinal permeation enhancement technology (GIPET) using C10.
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Yang B, Gomes Dos Santos A, Puri S, Bak A, Zhou L. The industrial design, translation, and development strategies for long-acting peptide delivery. Expert Opin Drug Deliv 2022; 19:1233-1245. [PMID: 35787229 DOI: 10.1080/17425247.2022.2098276] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
INTRODUCTION Peptides are widely recognized as therapeutic agents in the treatment of a wide range of diseases, such as cancer, diabetes etc. However, their use has been limited by their short half-life, due to significant metabolism by exo- and endo-peptidases as well as their inherent poor physical and chemical stability. Research with the aim of improving their half-life in the body, and thus improving patient compliance (by decreasing the frequency of injections) has gained significant attention. AREAS COVERED This review outlines the current landscape and industrial approaches to achieve extended peptide exposure and reduce dosing frequency. Emphasis is placed on identifying challenges in drug product manufacturing and desirable critical quality attributes that are essential for activity and safety, providing insights into chemistry and design aspects impacting peptide release, and summarizing important considerations for CMC developability assessments of sustained release peptide drugs. EXPERT OPINION Bring the patient and disease perspective early into development. Substantial advances have been made in the field of sustained delivery of peptides despite their complexity. The article will also highlight considerations for early-stage product design and development, providing an industrial perspective on risk mitigation in developing sustained release peptide drug products.
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Affiliation(s)
- Bin Yang
- Advanced Drug Delivery, Pharmaceutical Sciences, R&D, AstraZeneca, Cambridge, UK
| | - Ana Gomes Dos Santos
- Advanced Drug Delivery, Pharmaceutical Sciences, R&D, AstraZeneca, Cambridge, UK
| | - Sanyogitta Puri
- Advanced Drug Delivery, Pharmaceutical Sciences, R&D, AstraZeneca, Cambridge, UK
| | - Annette Bak
- Advanced Drug Delivery, Pharmaceutical Sciences, R&D, AstraZeneca, Boston, USA
| | - Liping Zhou
- Advanced Drug Delivery, Pharmaceutical Sciences, R&D, AstraZeneca, Boston, USA
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5
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Kim Y, Park EJ, Kim TW, Na DH. Recent Progress in Drug Release Testing Methods of Biopolymeric Particulate System. Pharmaceutics 2021; 13:pharmaceutics13081313. [PMID: 34452274 PMCID: PMC8399039 DOI: 10.3390/pharmaceutics13081313] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2021] [Revised: 08/16/2021] [Accepted: 08/16/2021] [Indexed: 12/18/2022] Open
Abstract
Biopolymeric microparticles have been widely used for long-term release formulations of short half-life chemicals or synthetic peptides. Characterization of the drug release from microparticles is important to ensure product quality and desired pharmacological effect. However, there is no official method for long-term release parenteral dosage forms. Much work has been done to develop methods for in vitro drug release testing, generally grouped into three major categories: sample and separate, dialysis membrane, and continuous flow (flow-through cell) methods. In vitro drug release testing also plays an important role in providing insight into the in vivo performance of a product. In vitro release test with in vivo relevance can reduce the cost of conducting in vivo studies and accelerate drug product development. Therefore, investigation of the in vitro–in vivo correlation (IVIVC) is increasingly becoming an essential part of particulate formulation development. This review summarizes the principles of the in vitro release testing methods of biopolymeric particulate system with the recent research articles and discusses their characteristics including IVIVC, accelerated release testing methods, and stability of encapsulated drugs.
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Affiliation(s)
- Yejin Kim
- College of Pharmacy, Chung-Ang University, Seoul 06974, Korea; (Y.K.); (T.W.K.)
- G2GBIO, Inc., Daejeon 34054, Korea
| | | | - Tae Wan Kim
- College of Pharmacy, Chung-Ang University, Seoul 06974, Korea; (Y.K.); (T.W.K.)
| | - Dong Hee Na
- College of Pharmacy, Chung-Ang University, Seoul 06974, Korea; (Y.K.); (T.W.K.)
- Correspondence: ; Tel.: +82-2-820-5677
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Molinier C, Picot-Groz M, Malval O, Le Lamer-Déchamps S, Richard J, Lopez-Noriega A, Grizot S. Impact of octreotide counterion nature on the long-term stability and release kinetics from an in situ forming depot technology. J Control Release 2021; 336:457-468. [PMID: 34214596 DOI: 10.1016/j.jconrel.2021.06.044] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 06/17/2021] [Accepted: 06/27/2021] [Indexed: 01/03/2023]
Abstract
The generation of acylated impurities has represented an important hurdle in the development of long acting injectables for therapeutic peptides using biocompatible polymers with a polyester moiety. We investigated here an in situ forming depot (ISFD) technology that uses polyethylene glycol - polyester copolymers and a solvent exchange mechanism to promote depot formation. This technology has shown promise in formulating small molecules as well as therapeutic proteins. In the present work, using the well-known somatostatin analog octreotide acetate (OctAc) as a model molecule, we evaluated this delivery platform to release therapeutic peptides. Peptide acylation was found to be pronounced in the formulation, while it was very limited once the depot was formed and during the release process. The octreotide acylation pattern was fully characterized by LC-MS/MS. Moreover, it was demonstrated that exchanging the acetate anion with more hydrophobic counterions like pamoate or lauryl sulfate allowed to greatly improve the peptide stability profile, as well as the formulation release performance. Finally, the in vivo evaluation through pharmacokinetics studies in rat of these new octreotide salts in ISFD formulations showed that octreotide was quantifiable up to four weeks post-administration with a high bioavailability and an acceptable initial burst.
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Affiliation(s)
| | | | - Océane Malval
- MedinCell, 3 Rue des Frères Lumière, 34830 Jacou, France
| | | | - Joël Richard
- MedinCell, 3 Rue des Frères Lumière, 34830 Jacou, France
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7
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Liu J, Xu Y, Liu Z, Ren H, Meng Z, Liu K, Liu Z, Yong J, Wang Y, Li X. A modified hydrophobic ion-pairing complex strategy for long-term peptide delivery with high drug encapsulation and reduced burst release from PLGA microspheres. Eur J Pharm Biopharm 2019; 144:217-229. [DOI: 10.1016/j.ejpb.2019.09.022] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Revised: 08/26/2019] [Accepted: 09/26/2019] [Indexed: 12/20/2022]
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8
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Wang A, Yan X, Liang R, Wang L, Chu L, Sun K, Fu F. Preparation and evaluation of lactic acid acylated exenatide and its long-acting preparation. Pharm Dev Technol 2019; 24:1229-1235. [PMID: 31368418 DOI: 10.1080/10837450.2019.1651857] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Exenatide (EX), a glucagon-like peptide-1 receptor agonist, is used to treat diabetes mellitus. However, its short half-life necessitates frequent administration and fluctuations in its plasma concentration may cause adverse effects. Previously, we developed glycolic acid acylated EX, which showed a good glucose-lowering effect. However, the release of lactic acid (LA) acylated exenatide (LA-EX) as an acylated adduct in EX microspheres has not been studied. Here, we investigated the biological properties of LA-EX. Additionally, LA-EX-loaded microspheres were formulated by an emulsion-solvent evaporation method and their in vitro characteristics, in vivo pharmacokinetic properties, and antidiabetic activities were evaluated. Pharmacokinetic studies revealed that the t1/2 of LA-EX (5.95 h) was 2.3-fold longer than that of EX. The antidiabetic activities of LA-EX in db/db mice were similar to those of EX. LA-EX release from microspheres was fairly well-sustained compared to that of EX microspheres. Additionally, LA-EX-loaded microspheres were more effective in lowering nonfasting blood glucose concentrations than EX microspheres. These findings suggest that LA-EX have the same efficacy as EX and that encapsulating LA-EX into microspheres can achieve better efficacy for the long-term type 2 diabetes mellitus treatment.
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Affiliation(s)
- Aiping Wang
- School of Pharmacy, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Yantai University , Yantai , Shandong Province , People's Republic of China
| | - Xiuju Yan
- School of Pharmacy, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Yantai University , Yantai , Shandong Province , People's Republic of China
| | - Rongcai Liang
- School of Pharmacy, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Yantai University , Yantai , Shandong Province , People's Republic of China
| | - Linlin Wang
- State Key Laboratory of Long-Acting and Targeting Drug Delivery System, Shandong Luye Pharmaceutical Co., Ltd , Yantai , Shandong Province , People's Republic of China
| | - Liuxiang Chu
- School of Pharmacy, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Yantai University , Yantai , Shandong Province , People's Republic of China
| | - Kaoxiang Sun
- School of Pharmacy, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Yantai University , Yantai , Shandong Province , People's Republic of China
| | - Fenghua Fu
- School of Pharmacy, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Yantai University , Yantai , Shandong Province , People's Republic of China
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9
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Mechanistic Evaluation of the Opposite Effects on Initial Burst Induced by Two Similar Hydrophilic Additives From Octreotide Acetate–Loaded PLGA Microspheres. J Pharm Sci 2019; 108:2367-2376. [DOI: 10.1016/j.xphs.2019.02.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Revised: 02/12/2019] [Accepted: 02/13/2019] [Indexed: 02/07/2023]
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10
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Liu J, Xu Y, Wang Y, Ren H, Meng Z, Liu K, Liu Z, Huang H, Li X. Proton Oriented-"Smart Depot" for Responsive Release of Ca 2+ to Inhibit Peptide Acylation in PLGA Microspheres. Pharm Res 2019; 36:119. [PMID: 31165279 DOI: 10.1007/s11095-019-2640-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Accepted: 05/06/2019] [Indexed: 12/17/2022]
Abstract
PURPOSE The purpose of this study was to characterize and detail the mechanism of a smart Ca2+ release depot (Ca3(PO4)2) about its ability for sustainable inhibition on peptide acylation within PLGA microspheres. METHODS The octreotide acetate release and acylation kinetics were analyzed by RP-HPLC. Changes of Ca2+ concentration and adsorption behavior were determined by a Calcium Colorimetric Assay Kit. The inner pH changes were delineated by a classic pH sensitive probe, Lysosensor yellow/ blue® dextran. Morphological changes of microspheres, adsorption between polymer and additive, transformation of Ca3(PO4)2 were characterized using SEM, FTIR and SSNMR separately. RESULTS Before and after microspheres formulation, the property and effectiveness of Ca3(PO4)2 were investigated. Compared with a commonly used calcium salt (CaCl2), high encapsulation efficiency (96.56%) of Ca3(PO4)2 guarantees lasting effectiveness. In an increasingly acidic environment that simulated polymer degradation, the poorly water-soluble Ca3(PO4)2 could absorb protons and transform into the more and more soluble CaHPO4 and Ca(H2PO4)2 to produce sufficient Ca2+ according to severity of acylation. The corresponding Ca2+ produce capacity fully met the optimum inhibition requirement since the real-time adsorption sites (water-soluble carboxylic acids) inside the degrading microspheres were rare. A sustained retention of three switchable calcium salts and slow release of Ca2+ were observed during the microsphere incubation. FTIR results confirmed the long-term inhibition effect induced by Ca3(PO4)2 on the adsorption between drug and polymer. CONCLUSIONS With the presence of the smart Ca2+ depot (Ca3(PO4)2) in the microspheres, a sustainable and long-term inhibition of peptide acylation was achieved.
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Affiliation(s)
- Jiwei Liu
- School of Pharmaceutical Science, Nanjing Tech University, No. 30 Puzhu South Road, Nanjing, 211816, China
| | - Yan Xu
- School of Pharmaceutical Science, Nanjing Tech University, No. 30 Puzhu South Road, Nanjing, 211816, China
| | - Yonglu Wang
- School of Pharmaceutical Science, Nanjing Tech University, No. 30 Puzhu South Road, Nanjing, 211816, China
| | - Hao Ren
- School of Pharmaceutical Science, Nanjing Tech University, No. 30 Puzhu South Road, Nanjing, 211816, China
| | - Zhengjie Meng
- School of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, No. 30 Puzhu South Road, Nanjing, 211816, China
| | - Kuntang Liu
- School of Pharmaceutical Science, Nanjing Tech University, No. 30 Puzhu South Road, Nanjing, 211816, China
| | - Zhe Liu
- School of Pharmaceutical Science, Nanjing Tech University, No. 30 Puzhu South Road, Nanjing, 211816, China
| | - He Huang
- School of Pharmaceutical Science, Nanjing Tech University, No. 30 Puzhu South Road, Nanjing, 211816, China.
| | - Xueming Li
- School of Pharmaceutical Science, Nanjing Tech University, No. 30 Puzhu South Road, Nanjing, 211816, China.
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11
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Poly(lactic acid)/poly(lactic-co-glycolic acid) particulate carriers for pulmonary drug delivery. JOURNAL OF PHARMACEUTICAL INVESTIGATION 2019. [DOI: 10.1007/s40005-019-00443-1] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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12
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Zhu C, Peng T, Huang D, Feng D, Wang X, Pan X, Tan W, Wu C. Formation Mechanism, In vitro and In vivo Evaluation of Dimpled Exenatide Loaded PLGA Microparticles Prepared by Ultra-Fine Particle Processing System. AAPS PharmSciTech 2019; 20:64. [PMID: 30627822 DOI: 10.1208/s12249-018-1208-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Accepted: 10/01/2018] [Indexed: 02/08/2023] Open
Abstract
Spherical poly (D, L-lactic-co-glycolic acid) microparticles (PLGA-MPs) have long been investigated in order to achieve sustained delivery of proteins/peptides. However, the formation mechanism and release characteristics of the specific shape MPs were still unknown. This study aimed to develop a novel-dimpled exenatide-loaded PLGA-MPs (Exe-PLGA-MPs) using an ultra-fine particle processing system (UPPS) and investigate the formation mechanism and release characteristics. Exe-PLGA-MPs were prepared by UPPS and optimized based on their initial burst within the first 24 h and drug release profiles. Physicochemical properties of Exe-PLGA-MPs, including morphology, particle size, and structural integrity of Exe extracted from Exe-PLGA-MPs, were evaluated. Furthermore, pharmacokinetic studies of the optimal formulation were conducted in Sprague-Dawley (SD) rats to establish in vitro-in vivo correlations (IVIVC) of drug release. Exe-PLGA-MPs with dimpled shapes and uniform particle sizes achieved a high encapsulation efficiency (EE%, 91.50 ± 2.65%) and sustained drug release for 2 months in vitro with reduced initial burst (20.42 ± 1.64%). Moreover, the pharmacokinetic studies revealed that effective drug concentration could be maintained for 3 weeks following a single injection of dimpled Exe-PLGA-MPs with high IVIVC. Dimpled PLGA-MPs prepared using the UPPS technique could thus have great potential for sustained delivery of macromolecular proteins/peptides.
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13
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Tian S, Zheng S, Han Y, Guo Z, Zhai G, Bai X, He X, Fan E, Zhang Y, Zhang K. Maleic Anhydride Labeling-Based Approach for Quantitative Proteomics and Successive Derivatization of Peptides. Anal Chem 2017; 89:8259-8265. [DOI: 10.1021/acs.analchem.7b01120] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Shanshan Tian
- 2011 Collaborative
Innovation Center of Tianjin for Medical Epigenetics, Tianjin Key
Laboratory of Medical Epigenetics, Key Laboratory of Immune Microenvironment
and Disease, Ministry of Education, Department of Biochemistry
and Molecular Biology, Tianjin Medical University, Tianjin 300070, China
| | - Shuzhen Zheng
- Department
of Chemistry, Nankai University, Tianjin 300071, China
| | - Yanpu Han
- Department
of Chemistry, Nankai University, Tianjin 300071, China
| | - Zhenchang Guo
- 2011 Collaborative
Innovation Center of Tianjin for Medical Epigenetics, Tianjin Key
Laboratory of Medical Epigenetics, Key Laboratory of Immune Microenvironment
and Disease, Ministry of Education, Department of Biochemistry
and Molecular Biology, Tianjin Medical University, Tianjin 300070, China
| | - Guijin Zhai
- 2011 Collaborative
Innovation Center of Tianjin for Medical Epigenetics, Tianjin Key
Laboratory of Medical Epigenetics, Key Laboratory of Immune Microenvironment
and Disease, Ministry of Education, Department of Biochemistry
and Molecular Biology, Tianjin Medical University, Tianjin 300070, China
| | - Xue Bai
- 2011 Collaborative
Innovation Center of Tianjin for Medical Epigenetics, Tianjin Key
Laboratory of Medical Epigenetics, Key Laboratory of Immune Microenvironment
and Disease, Ministry of Education, Department of Biochemistry
and Molecular Biology, Tianjin Medical University, Tianjin 300070, China
| | - Xiwen He
- Department
of Chemistry, Nankai University, Tianjin 300071, China
| | - Enguo Fan
- Institut
für Biochemie und Molekularbiologie, Universität Freiburg, Stefan-Meier-Strasse 17, Freiburg 79104, Germany
- Department
of Microbiology and Parasitology, Institute of Basic
Medical Sciences, Chinese Academy of Medical Sciences/School of Basic Medicine, Peking Union Medical College, Beijing 100005, China
| | - Yukui Zhang
- Department
of Chemistry, Nankai University, Tianjin 300071, China
- National
Chromatographic Research and Analysis Center, Dalian Institute of
Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning 116023, China
| | - Kai Zhang
- 2011 Collaborative
Innovation Center of Tianjin for Medical Epigenetics, Tianjin Key
Laboratory of Medical Epigenetics, Key Laboratory of Immune Microenvironment
and Disease, Ministry of Education, Department of Biochemistry
and Molecular Biology, Tianjin Medical University, Tianjin 300070, China
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14
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Cossé A, König C, Lamprecht A, Wagner KG. Hot Melt Extrusion for Sustained Protein Release: Matrix Erosion and In Vitro Release of PLGA-Based Implants. AAPS PharmSciTech 2017; 18:15-26. [PMID: 27193002 DOI: 10.1208/s12249-016-0548-5] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2016] [Accepted: 05/06/2016] [Indexed: 11/30/2022] Open
Abstract
The design of biodegradable implants for sustained release of proteins is a complex challenge optimizing protein polymer interaction in combination with a mini-scale process which is predictive for production. The process of hot melt extrusion (HME) was therefore conducted on 5- and 9-mm mini-scale twin screw extruders. Poly(lactic-co-glycolic acid) (PLGA) implants were characterized for their erosion properties and the in vitro release of the embedded protein (bovine serum albumin, BSA). The release of acidic monomers as well as other parameters (pH value, mass loss) during 16 weeks indicated a delayed onset of matrix erosion in week 3. BSA-loaded implants released 17.0% glycolic and 5.9% lactic acid after a 2-week lag time. Following a low burst release (3.7% BSA), sustained protein release started in week 4. Storage under stress conditions (30°C, 75% rH) revealed a shift of erosion onset of 1 week (BSA-loaded implants: 26.9% glycolic and 9.3% lactic acid). Coherent with the changed erosion profiles, an influence on the protein release was observed. Confocal laser scanning and Raman microscopy showed a homogenous protein distribution throughout the matrix after extrusion and during release studies. Raman spectra indicated a conformational change of the protein structure which could be one reason for incomplete protein release. The study underlined the suitability of the HME process to obtain a solid dispersion of protein inside a polymeric matrix providing sustained protein release. However, the incomplete protein release and the impact by storage conditions require thorough characterization and understanding of erosion and release mechanisms.
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Shirangi M, Najafi M, Rijkers DTS, Kok RJ, Hennink WE, van Nostrum CF. Inhibition of Octreotide Acylation Inside PLGA Microspheres by Derivatization of the Amines of the Peptide with a Self-Immolative Protecting Group. Bioconjug Chem 2016; 27:576-85. [PMID: 26726953 DOI: 10.1021/acs.bioconjchem.5b00598] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Acylation of biopharmaceuticals such as peptides has been identified as a major obstacle for the successful development of PLGA controlled release formulations. The purpose of this study was to develop a method to inhibit peptide acylation in poly(d,l-lactide-co-glycolide) (PLGA) formulations by reversibly and temporarily blocking the amine groups of a model peptide (octreotide) with a self-immolative protecting group (SIP), O-4-nitrophenyl-O'-4-acetoxybenzyl carbonate. The octreotide with two self-immolative protecting groups (OctdiSIP) on the N-terminus and lysine side chain was synthesized by reaction of the peptide with O-4-nitrophenyl-O'-4-acetoxybenzyl carbonate, purified by preparative RP-HPLC and characterized by mass spectrometry. Degradation studies of OctdiSIP in aqueous solutions of different pH values showed that protected octreotide was stable at low pH (pH 5) whereas the protecting group was eliminated at physiological pH, especially in the presence of an esterase, to generate native octreotide. OctdiSIP encapsulated in PLGA microspheres, prepared using a double emulsion solvent evaporation method, showed substantial inhibition of acylation as compared to the unprotected octreotide: 52.5% of unprotected octreotide was acylated after 50 days incubation of microspheres in PBS pH 7.4 at 37 °C, whereas OctdiSIP showed only 5.0% acylation in the same time frame. In conclusion, the incorporation of self-immolative protection groups provides a viable approach for inhibition of acylation of peptides in PLGA delivery systems.
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Affiliation(s)
- Mehrnoosh Shirangi
- Department of Drug and Food Control, Faculty of Pharmacy, Tehran University of Medical Science , Tehran 1417614411, Iran
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Wang Y, Sun T, Zhang Y, Chaurasiya B, Huang L, Liu X, Tu J, Xiong Y, Sun C. Exenatide loaded PLGA microspheres for long-acting antidiabetic therapy: preparation, characterization, pharmacokinetics and pharmacodynamics. RSC Adv 2016. [DOI: 10.1039/c6ra02994a] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
We herein fabricated the exenatide-loaded microspheres by a water in oil in oil (W/O/O) method, which presented great effect on glycemic control with low initial burst release and reduced risk of gastrointestinal intolerance and hypoglycemia.
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Affiliation(s)
- Yutong Wang
- State Key Laboratory of Natural Medicines
- Department of Pharmaceutics
- School of Pharmacy
- China Pharmaceutical University
- Nanjing 210009
| | - Ting Sun
- State Key Laboratory of Natural Medicines
- Department of Pharmaceutics
- School of Pharmacy
- China Pharmaceutical University
- Nanjing 210009
| | - Yue Zhang
- State Key Laboratory of Natural Medicines
- Department of Pharmaceutics
- School of Pharmacy
- China Pharmaceutical University
- Nanjing 210009
| | - Birendra Chaurasiya
- State Key Laboratory of Natural Medicines
- Department of Pharmaceutics
- School of Pharmacy
- China Pharmaceutical University
- Nanjing 210009
| | - Liping Huang
- State Key Laboratory of Natural Medicines
- Department of Pharmaceutics
- School of Pharmacy
- China Pharmaceutical University
- Nanjing 210009
| | - Xi Liu
- State Key Laboratory of Natural Medicines
- Department of Pharmaceutics
- School of Pharmacy
- China Pharmaceutical University
- Nanjing 210009
| | - Jiasheng Tu
- State Key Laboratory of Natural Medicines
- Department of Pharmaceutics
- School of Pharmacy
- China Pharmaceutical University
- Nanjing 210009
| | - Yerong Xiong
- State Key Laboratory of Natural Medicines
- Department of Pharmaceutics
- School of Pharmacy
- China Pharmaceutical University
- Nanjing 210009
| | - Chunmeng Sun
- State Key Laboratory of Natural Medicines
- Department of Pharmaceutics
- School of Pharmacy
- China Pharmaceutical University
- Nanjing 210009
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Extended release microparticle-in-gel formulation of octreotide: Effect of polymer type on acylation of peptide during in vitro release. Int J Pharm 2015; 496:676-88. [PMID: 26561725 DOI: 10.1016/j.ijpharm.2015.11.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2015] [Revised: 10/25/2015] [Accepted: 11/02/2015] [Indexed: 12/31/2022]
Abstract
Polymeric microparticles (MPs)-in-gel formulations for extended delivery of octreotide were developed. We investigated influence of polymer composition on acylation of octreotide and kinetics of release during in vitro release from biodegradable polymeric formulations. Polycaprolactone (PCL), polylactic acid (PLA), polyglycolic acid (PGA) and polyethylene glycol (PEG) based triblock (TB≈PCL10k-PEG2k-PCL10k) and pentablock (PBA≈PLA3k-PCL7k-PEG2k-PCL7k-PLA3k and PBB≈PGA3k-PCL7k-PEG2k-PCL7k-PGA3k) polymers were investigated. Octreotide was encapsulated in MPs using methanol-oil/water emulsion solvent evaporation method. The particles were characterized for size, morphology, encapsulation efficiency, drug loading and in vitro release. Release samples were subjected to HPLC analysis for quantitation and HPLC-MS analysis for identification of native and chemically modified octreotide adducts. Entrapment efficiency of methanol-oil/water method with TB, PBA and PBB polymers were 45%, 60%, and 82%, respectively. A significant fraction of released octreotide was acylated from lactide and glycolide based PBA (53%) and PBB (92%) polymers. Substantial amount of peptide was not released from PBB polymers after 330 days of incubation. Complete release of octreotide was achieved from TB polymer over a period of 3 months with minimal acylation of peptide (13%). PCL based polymers resulted in minimal acylation of peptide and hence may be suitable for extended peptide and protein delivery. Conversely, polymers having PLA and PGA blocks may not be appropriate for peptide delivery due to acylation and incomplete release.
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18
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Zhu C, Huang Y, Zhang X, Mei L, Pan X, Li G, Wu C. Comparative studies on exenatide-loaded poly ( d , l -lactic-co-glycolic acid) microparticles prepared by a novel ultra-fine particle processing system and spray drying. Colloids Surf B Biointerfaces 2015; 132:103-10. [DOI: 10.1016/j.colsurfb.2015.05.001] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2014] [Revised: 04/01/2015] [Accepted: 05/03/2015] [Indexed: 11/26/2022]
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19
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Reversible hydrophobic ion-paring complex strategy to minimize acylation of octreotide during long-term delivery from PLGA microparticles. Int J Pharm 2015; 489:237-45. [PMID: 25940041 DOI: 10.1016/j.ijpharm.2015.04.075] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2015] [Revised: 04/22/2015] [Accepted: 04/28/2015] [Indexed: 11/22/2022]
Abstract
Acylation of peptide has been reported for a number of peptides and proteins during release from polymers comprising of lactide and glycolide. We hypothesize that reversible hydrophobic ion-pairing (HIP) complex may minimize octreotide acylation during release. Sodium dodecyl sulfate (SDS), dextran sulfate A (DSA, Mw 9-20 kDa) and dextran sulfate B (DSB, Mw 36-50 kDa) were selected as ion-pairing agents to prepare reversible HIP complex with octreotide. Complexation efficiency was optimized with respect to the mole ratio of ion-pairing agent to octreotide to achieve 100% complexation of octreotide. Dissociation studies suggested that DSA-octreotide and DSB-octreotide complexes dissociate completely at physiological pH in presence of counter ions unlike SDS-octreotide complex. DSA-octreotide and DSB-octreotide complex encapsulated PLGA microparticles (DSAMPs and DSBMPs) were prepared using the S/O/W emulsion method. Entrapment efficiencies for DSAMPs and DSBMPs were 74.7±8.4% and 81.7±6.3%, respectively. In vitro release of octreotide was performed by suspending MPs in gel. A large fraction of peptide was released in chemically intact form and <7% was acylated from DSAMPs and DSBMPs in gel over 55 days. Therefore, HIP complexation could be a viable strategy to minimize acylation of peptides and proteins during extended release from lactide and glycolide based polymers.
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Qi F, Wu J, Yang T, Ma G, Su Z. Mechanistic studies for monodisperse exenatide-loaded PLGA microspheres prepared by different methods based on SPG membrane emulsification. Acta Biomater 2014; 10:4247-56. [PMID: 24952071 DOI: 10.1016/j.actbio.2014.06.018] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2014] [Revised: 05/02/2014] [Accepted: 06/11/2014] [Indexed: 11/17/2022]
Abstract
Poly(DL-lactic-co-glycolic acid) (PLGA) microspheres have been widely prepared by many methods, including solvent evaporation, solvent extraction and the co-solvent method. However, very few studies have compared the properties of microspheres fabricated by these methods. This is partly because the broad size distribution of the resultant particles severely complicates the analysis and affects the reliability of the comparison. To this end, uniform-sized PLGA microspheres have been prepared by Shirasu porous glass premix membrane emulsification and used to encapsulate exenatide, a drug for treating Type 2 diabetes. Based on this technique, the influences on the properties of microspheres fabricated by the aforementioned three methods were intensively investigated, including in vitro release, degradation and pharmacology. We found that these microspheres presented totally different release behaviors in vitro and in vivo, but exhibited a similar trend of PLGA degradation. Moreover, the internal structural evolution visually demonstrated these release behaviors. We selected for further examination the microsphere prepared by solvent evaporation because of its constant release rate, and explored its pharmacodynamics, histology, etc., in more detail. This microsphere when injected once showed equivalent efficacy to that of twice-daily injections of exenatide with no inflammatory response.
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Affiliation(s)
- Feng Qi
- State Key Laboratory of Biochemical Engineering, PLA Key Laboratory of Biopharmaceutical Production & Formulation Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, People's Republic of China; University of the Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Jie Wu
- State Key Laboratory of Biochemical Engineering, PLA Key Laboratory of Biopharmaceutical Production & Formulation Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
| | - Tingyuan Yang
- State Key Laboratory of Biochemical Engineering, PLA Key Laboratory of Biopharmaceutical Production & Formulation Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
| | - Guanghui Ma
- State Key Laboratory of Biochemical Engineering, PLA Key Laboratory of Biopharmaceutical Production & Formulation Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, People's Republic of China; Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, People's Republic of China.
| | - Zhiguo Su
- State Key Laboratory of Biochemical Engineering, PLA Key Laboratory of Biopharmaceutical Production & Formulation Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, People's Republic of China; Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, People's Republic of China
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21
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Hong Y, Zhu H, Hu J, Lin X, Wang F, Li C, Yang Z. Synthesis and radiolabeling of 111In-core-cross linked polymeric micelle-octreotide for near-infrared fluoroscopy and single photon emission computed tomography imaging. Bioorg Med Chem Lett 2014; 24:2781-5. [DOI: 10.1016/j.bmcl.2014.03.050] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2014] [Revised: 03/01/2014] [Accepted: 03/17/2014] [Indexed: 12/24/2022]
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22
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Acylation of Exenatide by Glycolic Acid and its Anti-Diabetic Activities in db/db Mice. Pharm Res 2014; 31:1958-66. [DOI: 10.1007/s11095-014-1298-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2013] [Accepted: 01/14/2014] [Indexed: 10/25/2022]
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23
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Qi F, Wu J, Hao D, Yang T, Ren Y, Ma G, Su Z. Comparative Studies on the Influences of Primary Emulsion Preparation on Properties of Uniform-Sized Exenatide-Loaded PLGA Microspheres. Pharm Res 2014; 31:1566-74. [DOI: 10.1007/s11095-013-1262-6] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2013] [Accepted: 12/09/2013] [Indexed: 10/25/2022]
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24
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Kajjari PB, Manjeshwar LS, Aminabhavi TM. Novel blend microspheres of poly(3-hydroxybutyrate) and Pluronic F68/127 for controlled release of 6-mercaptopurine. J Appl Polym Sci 2013. [DOI: 10.1002/app.40196] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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25
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Palmitoylation of octreotide for incorporation into poly(amidoamine) dendrimers. JOURNAL OF PHARMACEUTICAL INVESTIGATION 2013. [DOI: 10.1007/s40005-013-0110-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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26
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Liang R, Li X, Shi Y, Wang A, Sun K, Liu W, Li Y. Effect of water on exenatide acylation in poly(lactide-co-glycolide) microspheres. Int J Pharm 2013; 454:344-53. [DOI: 10.1016/j.ijpharm.2013.07.012] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2013] [Revised: 05/30/2013] [Accepted: 07/02/2013] [Indexed: 11/25/2022]
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