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Niloy KK, Lowe TL. Injectable systems for long-lasting insulin therapy. Adv Drug Deliv Rev 2023; 203:115121. [PMID: 37898336 DOI: 10.1016/j.addr.2023.115121] [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] [Received: 04/29/2023] [Revised: 10/20/2023] [Accepted: 10/25/2023] [Indexed: 10/30/2023]
Abstract
Insulin therapy is the mainstay to treat diabetes characterizedd by hyperglycemia. However, its short half-life of only 4-6 min limits its effectiveness in treating chronic diabetes. Advances in recombinant DNA technology and protein engineering have led to several insulin analogue products that have up to 42 h of glycemic control. However, these insulin analogues still require once- or twice-daily injections for optimal glycemic control and have poor patient compliance and adherence issues. To achieve insulin release for more than one day, different injectable delivery systems including microspheres, in situ forming depots, nanoparticles and composite systems have been developed. Several of these delivery systems have advanced to clinical trials for once-weekly insulin injection. This review comprehensively summarizes the developments of injectable insulin analogs and delivery systems covering the whole field of injectable long-lasting insulin technologies from prototype design, preclinical studies, clinical trials to marketed products for the treatment of diabetes.
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Affiliation(s)
- Kumar Kulldeep Niloy
- Department of Pharmaceutical Sciences, University of Tennessee Health Science Center, Memphis, TN 38163, USA; Department of Pharmaceutical Sciences, St. Jude Children's Research Hospital, Memphis, TN 38105, USA.
| | - Tao L Lowe
- Department of Pharmaceutical Sciences, University of Tennessee Health Science Center, Memphis, TN 38163, USA; Department of Oral and Maxillofacial Surgery, School of Dentistry, University of Maryland, Baltimore, MD 21201, USA; Fischell Department of Bioengineering, A. James Clark School of Engineering, University of Maryland, College Park, MD 20742, USA.
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2
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Jurić Simčić A, Erak I, Cetina Čižmek B, Hafner A, Filipović-Grčić J. Selection of Excipients for the Preparation of Vancomycin-Loaded Poly(D,L-lactide-co-glycolide) Microparticles with Extended Release by Emulsion Spray Drying. Pharmaceutics 2023; 15:2438. [PMID: 37896198 PMCID: PMC10610132 DOI: 10.3390/pharmaceutics15102438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2023] [Revised: 10/03/2023] [Accepted: 10/04/2023] [Indexed: 10/29/2023] Open
Abstract
The aim of this study was to relate the composition of the W/O emulsion used as a starting fluid in the spray-drying process to the quality of the dry polymer particles obtained in terms of physical-chemical properties, compatibility and drug release performance. Four W/O emulsions containing vancomycin hydrochloride (VAN), an encapsulating PLGA polymer and Poloxamer® 407, chitosan and/or sorbitan monooleate as stabilisers were spray-dried using an ultrasonic atomising nozzle. The microparticles obtained were micron-sized, with a volume mean diameter between 43.2 ± 0.3 and 64.0 ± 12.6 µm, and spherical with a mostly smooth, non-porous surface and with high drug loading (between 14.5 ± 0.6 and 17.1 ± 1.9% w/w). All formulations showed a prolonged and biphasic VAN release profile, with diffusion being the primary release mechanism. Microparticles prepared from the emulsions with Poloxamer® 407 and sorbitan monooleate released VAN rapidly and completely within one day. The release of VAN from microparticles prepared from the emulsion without additives or with chitosan in the inner aqueous phase was significantly decreased; after four days, a cumulative release of 65% and 61%, respectively, was achieved. Microparticles with encapsulated chitosan had the largest mean particle diameter and the slowest release of VAN.
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Affiliation(s)
- Ana Jurić Simčić
- R&D, PLIVA Croatia Ltd., TEVA Group Member, 10000 Zagreb, Croatia; (A.J.S.); (I.E.); (B.C.Č.)
| | - Iva Erak
- R&D, PLIVA Croatia Ltd., TEVA Group Member, 10000 Zagreb, Croatia; (A.J.S.); (I.E.); (B.C.Č.)
| | - Biserka Cetina Čižmek
- R&D, PLIVA Croatia Ltd., TEVA Group Member, 10000 Zagreb, Croatia; (A.J.S.); (I.E.); (B.C.Č.)
| | - Anita Hafner
- Faculty of Pharmacy and Biochemistry, University of Zagreb, 10000 Zagreb, Croatia;
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3
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Huo Q, Gao Y, Wu W, Hu S, Zhang Z, Li Z, Tian Y, Quan P, Li W, Liu D. Colloidal Jamming by Interfacial Self‐Assembled Polymers: A Robust Route for Ultrahigh Efficient Encapsulation. Angew Chem Int Ed Engl 2022; 61:e202208738. [DOI: 10.1002/anie.202208738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Indexed: 11/09/2022]
Affiliation(s)
- Qingqing Huo
- State Key Laboratory of Natural Medicines Department of Pharmaceutical Science China Pharmaceutical University Nanjing 210009 China
- NMPA Key Laboratory for Research and Evaluation of Pharmaceutical Preparations and Excipients China Pharmaceutical University Nanjing 210009 China
| | - Yue Gao
- State Key Laboratory of Natural Medicines Department of Pharmaceutical Science China Pharmaceutical University Nanjing 210009 China
- NMPA Key Laboratory for Research and Evaluation of Pharmaceutical Preparations and Excipients China Pharmaceutical University Nanjing 210009 China
| | - Wenbo Wu
- State Key Laboratory of Natural Medicines Department of Pharmaceutical Science China Pharmaceutical University Nanjing 210009 China
- NMPA Key Laboratory for Research and Evaluation of Pharmaceutical Preparations and Excipients China Pharmaceutical University Nanjing 210009 China
| | - Shuai Hu
- State Key Laboratory of Natural Medicines Department of Pharmaceutical Science China Pharmaceutical University Nanjing 210009 China
- NMPA Key Laboratory for Research and Evaluation of Pharmaceutical Preparations and Excipients China Pharmaceutical University Nanjing 210009 China
| | - Zifan Zhang
- State Key Laboratory of Natural Medicines Department of Pharmaceutical Science China Pharmaceutical University Nanjing 210009 China
- NMPA Key Laboratory for Research and Evaluation of Pharmaceutical Preparations and Excipients China Pharmaceutical University Nanjing 210009 China
| | - Zhi Li
- State Key Laboratory of Natural Medicines Department of Pharmaceutical Science China Pharmaceutical University Nanjing 210009 China
- NMPA Key Laboratory for Research and Evaluation of Pharmaceutical Preparations and Excipients China Pharmaceutical University Nanjing 210009 China
| | - Yuling Tian
- State Key Laboratory of Natural Medicines Department of Pharmaceutical Science China Pharmaceutical University Nanjing 210009 China
- NMPA Key Laboratory for Research and Evaluation of Pharmaceutical Preparations and Excipients China Pharmaceutical University Nanjing 210009 China
| | - Peng Quan
- Department of Pharmaceutical Science, School of Pharmacy Shenyang Pharmaceutical University Shenyang 110016 China
| | - Wen Li
- International Joint Laboratory of Biomimetic and Smart Polymers School of Materials Science and Engineering Shanghai University Shanghai 200444 China
| | - Dongfei Liu
- State Key Laboratory of Natural Medicines Department of Pharmaceutical Science China Pharmaceutical University Nanjing 210009 China
- NMPA Key Laboratory for Research and Evaluation of Pharmaceutical Preparations and Excipients China Pharmaceutical University Nanjing 210009 China
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4
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Huo Q, Gao Y, Wu W, Hu S, Zhang Z, Li Z, Tian Y, Quan P, Li W, Liu D. Colloidal Jamming by Interfacial Self‐Assembled Polymers: A Robust Route for Ultrahigh Efficient Encapsulation. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202208738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Qingqing Huo
- China Pharmaceutical University School of Pharmacy Longmian Avenue No. 639 211198 Nanjing CHINA
| | - Yue Gao
- China Pharmaceutical University School of Pharmacy Longmian Avenue No. 639 211198 Nanjing CHINA
| | - Wenbo Wu
- China Pharmaceutical University School of Pharmacy Longmian Avenue No. 639 211198 Nanjing CHINA
| | - Shuai Hu
- China Pharmaceutical University School of Pharmacy Longmian Avenue No. 639 210009 Nanjing CHINA
| | - Zifan Zhang
- China Pharmaceutical University School of Pharmacy Longmian Avenue No. 639 210009 Nanjing CHINA
| | - Zhi Li
- China Pharmaceutical University School of Pharmacy Longmian Avenue No. 639 211198 Nanjing CHINA
| | - Yuling Tian
- China Pharmaceutical University School of Pharmacy Longmian Avenue No. 639 211198 Nanjing CHINA
| | - Peng Quan
- Shenyang Pharmaceutical University School of Pharmacy Wenhua Road No. 103 110016 Shenyang CHINA
| | - Wen Li
- Shanghai University School of Materials Science and Engineering Shangda Street 99 200444 Shanghai CHINA
| | - Dongfei Liu
- China Pharmaceutical University School of Pharmacy Longmian Avenue No. 639 211198 Nanjing CHINA
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5
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Study in the stabilization of proteins encapsulated in PLGA delivery system: Effects of additives on protein encapsulation, release, and stability. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.103436] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Sarkar B, Das K, Saha T, Prasad E, Gardas RL. Insights into the Formations of Host-Guest Complexes Based on the Benzimidazolium Based Ionic Liquids-β-Cyclodextrin Systems. ACS PHYSICAL CHEMISTRY AU 2022; 2:3-15. [PMID: 36855576 PMCID: PMC9718304 DOI: 10.1021/acsphyschemau.1c00016] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/17/2023]
Abstract
Inclusion complexation is one of the best strategies for developing a controlled release of a toxic drug without unexpected side effects from the very beginning of the administration to the target site. In this study, three benzimidazolium based ionic liquids (ILs) having bromide anion and cation bearing long alkyl chains, hexyl- ([C6CFBim]Br), octyl- ([C8CFBim]Br), and decyl- ([C10CFBim]Br) were designed and synthesized as antibacterial drugs. Inclusion complexes (ICs) of studied ILs have been prepared by the combination of β-cyclodextrin (β-CD), considering these conjugations should enhance the benignity of ILs and make them potential candidates for the controlled drug release. Characterizations and structural analysis of studied ICs have been performed by 1H NMR, 2D-ROESY NMR, FT-IR, HRMS, TGA, DSC, surface tension, ionic conductivity, dynamic light scattering (DLS), and isothermal titration calorimetry (ITC). Further, the morphology of the ICs has been analyzed by SEM and TEM. Furthermore, neat ILs and ICs have been treated against Escherichia coli and Bacillus subtilis to investigate their antibacterial activity, which confirms the prevention of bacterium growth and the shrinkage of the bacterial cell wall. The findings of this work provide the proof of concept that studied benzimidazolium based ILs-β-CD host-guest complexes should act as a potential candidate in controlled drug delivery and other biomedical applications.
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Affiliation(s)
- Bhaswati Sarkar
- Department
of Chemistry, Indian Institute of Technology
Madras, Chennai 600036, Tamil Nadu, India
| | - Koyeli Das
- Department
of Chemistry, Indian Institute of Technology
Madras, Chennai 600036, Tamil Nadu, India
| | - Tilak Saha
- Laboratory
of Immunology, Department of Zoology, University
of North Bengal, Darjeeling 734013, West Bengal, India
| | - Edamana Prasad
- Department
of Chemistry, Indian Institute of Technology
Madras, Chennai 600036, Tamil Nadu, India
- (EP)
| | - Ramesh L. Gardas
- Department
of Chemistry, Indian Institute of Technology
Madras, Chennai 600036, Tamil Nadu, India
- (RLG)
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7
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Nicoletti F, Hammer L, Furtado S, Mangano K, Mathiowitz E, Green B, Auci DL. Oral Delivery of Encapsulated All-Trans Retinoic Acid Ameliorates Disease in Rodent Models of Colitis. Inflamm Bowel Dis 2021; 28:455-465. [PMID: 34417826 PMCID: PMC8889276 DOI: 10.1093/ibd/izab204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Indexed: 12/09/2022]
Abstract
BACKGROUND All-trans retinoic acid (ATRA) is a biologically active isomer of retinoic acid (RA). Topical ATRA (retin-a, retin-a micro, atralin, renova, and avita) is the active pharmaceutical ingredient for FDA-approved treatments for acne and skin wrinkles. Oral formulations (Vesanoid) treat acute promyelocytic leukemia, but oral dosing can induce severe side effects. Despite benefits in various rodent models of inflammatory bowel disease (IBD), toxicity and controversial clinical observations have diminished enthusiasm for ATRA IBD clinical trials. To circumvent these issues and to use ATRA's key role in maintaining gut tolerance, we developed a poly(lactic-co-glycolic acid) (PLGA) microsphere (MS) encapsulated ATRA formulation aimed at directing ATRA delivery to immune structures of the gut, limiting systemic exposure. Initially, ATRA MS was developed as a component of a combinatorial product (TreXTAM) that also contained encapsulated transforming growth factor (TGF)-β and ATRA in a 1:2 w/w ratio. Although the combination was optimal, benefit was also observed when ATRA MS was given alone in the CD4+ CD25-T-cell adoptive transfer (ACT) colitis model. METHODS We used the ACT and DSS-induced murine models of colitis to expand on the dose-dependent effects of oral ATRA MS when given alone. The DSS model was also used to compare the efficacy of ATRA MS and soluble ATRA, while healthy animals were used to compare the pharmacokinetics of the two drugs. RESULTS In both the ACT and DSS-induced murine models of colitis, ATRA MS was observed to be effective in ameliorating disease. ATRA MS was also observed to be more effective than soluble ATRA in these models and displayed more favorable pharmacokinetics. CONCLUSIONS We suggest ATRA MS, as a standalone product, may attenuate IBD and perhaps limit fibrosis, while limiting systemic side effects.
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Affiliation(s)
| | | | | | | | | | | | - Dominick L Auci
- Therapyx, Inc., Louisville, Kentucky, USA,Address correspondence to: Dominick L. Auci, PhD, Vice President, Research and Development, Therapyx, Inc., 2010 Cherokee Pkwy, Suite 2, Louisville, KY 40204, USA ()
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8
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Hammer L, Furtado S, Mathiowitz E, Auci DL. Oral encapsulated transforming growth factor β1 reduces endogenous levels: Effect on inflammatory bowel disease. World J Gastrointest Pharmacol Ther 2020; 11:79-92. [PMID: 33251033 PMCID: PMC7667406 DOI: 10.4292/wjgpt.v11.i5.79] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 06/18/2020] [Accepted: 10/09/2020] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND TreXTAM® is a combination of the key regulatory cytokine transforming growth factor beta (TGFβ) and all trans retinoic acid (ATRA) microencapsulated for oral delivery to immune structures of the gut. It is in development as a novel treatment for inflammatory bowel disease (IBD).
AIM To measure TGFβ levels in blood and tissue after oral administration of encapsulated TGFβ.
METHODS Animals were orally administered encapsulated TGFβ by gavage. Levels of drug substance in blood and in gut tissues at various times after administration were measured by ELISA.
RESULTS We made the surprising discovery that oral administration of TreXTAM dramatically (approximately 50%) and significantly (P = 0.025) reduced TGFβ levels in colon, but not small intestine or mesenteric lymph nodes. Similarly, levels in rat serum after 25 d of thrice weekly dosing with either TreXTAM, or microencapsulated TGFβ alone (denoted as TPX6001) were significantly (P < 0.01) reduced from baseline levels. When tested in the SCID mouse CD4+CD25- adoptive cell transfer (ACT) model of IBD, oral TPX6001 alone provided only a transient benefit in terms of reduced weight loss.
CONCLUSION These observations suggest a negative feedback mechanism in the gut whereby local delivery of TGFβ results in reduced local and systemic levels of the active form of TGFβ. Our findings suggest potential clinical implications for use of encapsulated TGFβ, perhaps in the context of IBD and/or other instances of fibrosis and/or pathological TGFβ signaling.
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Affiliation(s)
- Laura Hammer
- Department of Research and Development, TherapyX, Buffalo, NY 14214, United States
| | - Stacia Furtado
- Department of Research and Development, TherapyX, Buffalo, NY 14214, United States
- Department of Molecular Pharmacology, Brown University, Providence, RI 02912, United States
| | - Edith Mathiowitz
- Department of Molecular Pharmacology, Brown University, Providence, RI 02912, United States
| | - Dominick L Auci
- Department of Research and Development, TherapyX, Buffalo, NY 14214, United States
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9
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Spray congealed solid lipid microparticles as a sustained release delivery system for Gonadorelin [6-D-Phe]: Production, optimization and in vitro release behavior. Eur J Pharm Biopharm 2020; 154:18-32. [PMID: 32599272 DOI: 10.1016/j.ejpb.2020.06.017] [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] [Received: 03/18/2020] [Revised: 06/18/2020] [Accepted: 06/22/2020] [Indexed: 11/20/2022]
Abstract
Sustained release lipid microparticles for a potential veterinary application were produced by the means of spray congealing using saturated triglycerides with respective surfactants. The spray congealing process was optimized using unloaded and loaded microparticles, revealing the highest impact of the spray flow on material loss. Yield could be optimized by increasing the spray flow as well as a reduction of the melt temperature from 90 to 75 °C. For the delivery system developed in this study, a release of around 15 days was targeted. The release profile was in first hand determined with the use of model substances (aspartame and tryptophan), before incorporating the decapeptide Gonadorelin [6-D-Phe]. Release could be controlled between 2 and 28 d, which was dependent on stability of microparticles upon incubation, type and concentration of emulsifier, as well as the used triglyceride. Differential scanning calorimetry and X-ray powder diffraction confirmed the crystallization behavior of C14 and C16-triglycerides in combination with various emulsifiers in different modification without impact on release.
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10
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Park H, Ha DH, Ha ES, Kim JS, Kim MS, Hwang SJ. Effect of Stabilizers on Encapsulation Efficiency and Release Behavior of Exenatide-Loaded PLGA Microsphere Prepared by the W/O/W Solvent Evaporation Method. Pharmaceutics 2019; 11:E627. [PMID: 31771254 PMCID: PMC6955873 DOI: 10.3390/pharmaceutics11120627] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 11/20/2019] [Accepted: 11/21/2019] [Indexed: 12/22/2022] Open
Abstract
The aim of this study was to investigate the effects of various stabilizers on the encapsulation efficiency and release of exenatide-loaded PLGA (poly(lactic-co-glycolic acid)) microspheres prepared by the water-in-oil-in-water (W/O/W) solvent evaporation (SE) method. It was shown that the stabilizers affected exenatide stability in aqueous solutions, at water/dichloromethane interfaces, on PLGA surfaces, or during freeze-thawing and freeze-drying procedures. Sucrose predominantly reduces instability generated during freeze-thawing and freeze-drying. Phenylalanine prevents the destabilization at the water-dichloromethane (DCM) interface through decreased adsorption. Poloxamer 188 enhances stability in aqueous solutions and prevents adsorption to PLGA. Proline and lysine decrease adsorption on PLGA surfaces. Fourier transform infra-red spectroscopy (FT-IR) was used to find the molecular interaction of additives with exenatide or PLGA. Additives used in stability assessments were then added stepwise into the inner or outer water phase of the W/O/W double emulsion, and exenatide-loaded microspheres were prepared using the solvent evaporation method. The effect of each stabilizer on the encapsulation efficiency and release behavior of microspheres correlated well with the stability assessment results, except for the negative effect of poloxamer 188. Particle size analysis using laser diffractometry, scanning electron microscopy (SEM), water vapor sorption analysis, differential scanning calorimetry (DSC), and circular dichroism (CD) spectroscopy were also employed to characterize the prepared exenatide-loaded PLGA microsphere. This study demonstrated that an adequate formulation can be obtained by the study about the effect of stabilizers on peptide stability at the preformulation step. In addition, it can help to overcome various problems that can cause the destabilization of a peptide during the microsphere-manufacturing process and sustained drug release.
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Affiliation(s)
- Heejun Park
- College of Pharmacy, Pusan National University, 63 Busandaehak-ro, Geumjeong-gu, Busan 46241, Korea; (H.P.); (D.-H.H.); (E.-S.H.)
| | - Dong-Hyun Ha
- College of Pharmacy, Pusan National University, 63 Busandaehak-ro, Geumjeong-gu, Busan 46241, Korea; (H.P.); (D.-H.H.); (E.-S.H.)
| | - Eun-Sol Ha
- College of Pharmacy, Pusan National University, 63 Busandaehak-ro, Geumjeong-gu, Busan 46241, Korea; (H.P.); (D.-H.H.); (E.-S.H.)
| | - Jeong-Soo Kim
- Dong-A ST Co., Ltd., Giheung-gu, Yongin, Gyeonggi 446-905, Korea;
| | - Min-Soo Kim
- College of Pharmacy, Pusan National University, 63 Busandaehak-ro, Geumjeong-gu, Busan 46241, Korea; (H.P.); (D.-H.H.); (E.-S.H.)
| | - Sung-Joo Hwang
- College of Pharmacy and Yonsei Institute of Pharmaceutical Sciences, Yonsei University, 85 Songdogwahak-ro, Yeonsu-gu, Incheon 21983, Korea
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11
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Kim SR, Ho MJ, Choi YW, Kang MJ. Improved Drug Loading and Sustained Release of Entecavir‐loaded PLGA Microsphere Prepared by Spray Drying Technique. B KOREAN CHEM SOC 2019. [DOI: 10.1002/bkcs.11682] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Sung Rae Kim
- College of PharmacyChung‐Ang University Seoul 150‐756 South Korea
| | - Myoung Jin Ho
- College of PharmacyDankook University Chungnam 330‐714 South Korea
| | - Young Wook Choi
- College of PharmacyChung‐Ang University Seoul 150‐756 South Korea
| | - Myung Joo Kang
- College of PharmacyDankook University Chungnam 330‐714 South Korea
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12
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Effect of excipients on encapsulation and release of insulin from spray-dried solid lipid microparticles. Int J Pharm 2018; 550:439-446. [DOI: 10.1016/j.ijpharm.2018.09.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Revised: 09/03/2018] [Accepted: 09/05/2018] [Indexed: 01/08/2023]
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13
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Qu S, Dai C, Qiu M, Zhang R, Wang C, Cui L, Hao Z. Preparation and characterization of three types of cefquinome-loaded microspheres. INTERNATIONAL JOURNAL OF POLYMER ANALYSIS AND CHARACTERIZATION 2017. [DOI: 10.1080/1023666x.2017.1283169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Shaoqi Qu
- Agricultural Bio-pharmaceutical Laboratory, Qingdao Agricultural University, Qingdao, China
- National-Local Joint Engineering Laboratory, Agricultural Bio-pharmaceutical Technology, Qingdao Agricultural University, Qingdao, China
| | - Cunchun Dai
- Agricultural Bio-pharmaceutical Laboratory, Qingdao Agricultural University, Qingdao, China
- National-Local Joint Engineering Laboratory, Agricultural Bio-pharmaceutical Technology, Qingdao Agricultural University, Qingdao, China
| | - Mei Qiu
- Agricultural Bio-pharmaceutical Laboratory, Qingdao Agricultural University, Qingdao, China
- National-Local Joint Engineering Laboratory, Agricultural Bio-pharmaceutical Technology, Qingdao Agricultural University, Qingdao, China
| | - Ruili Zhang
- Agricultural Bio-pharmaceutical Laboratory, Qingdao Agricultural University, Qingdao, China
- National-Local Joint Engineering Laboratory, Agricultural Bio-pharmaceutical Technology, Qingdao Agricultural University, Qingdao, China
| | - Chunyuan Wang
- Agricultural Bio-pharmaceutical Laboratory, Qingdao Agricultural University, Qingdao, China
- National-Local Joint Engineering Laboratory, Agricultural Bio-pharmaceutical Technology, Qingdao Agricultural University, Qingdao, China
| | - Liangliang Cui
- Agricultural Bio-pharmaceutical Laboratory, Qingdao Agricultural University, Qingdao, China
- National-Local Joint Engineering Laboratory, Agricultural Bio-pharmaceutical Technology, Qingdao Agricultural University, Qingdao, China
| | - Zhihui Hao
- Agricultural Bio-pharmaceutical Laboratory, Qingdao Agricultural University, Qingdao, China
- National-Local Joint Engineering Laboratory, Agricultural Bio-pharmaceutical Technology, Qingdao Agricultural University, Qingdao, China
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14
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Duchêne D, Bochot A. Thirty years with cyclodextrins. Int J Pharm 2016; 514:58-72. [DOI: 10.1016/j.ijpharm.2016.07.030] [Citation(s) in RCA: 76] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Revised: 07/13/2016] [Accepted: 07/15/2016] [Indexed: 01/05/2023]
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15
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Antoniuk I, Wintgens V, Volet G, Nielsen TT, Amiel C. Bifunctionalized dextrans for surface PEGylation via multivalent host–guest interactions. Carbohydr Polym 2015; 133:473-81. [DOI: 10.1016/j.carbpol.2015.07.027] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2015] [Revised: 06/15/2015] [Accepted: 07/08/2015] [Indexed: 10/23/2022]
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16
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Pagels RF, Prud'homme RK. Polymeric nanoparticles and microparticles for the delivery of peptides, biologics, and soluble therapeutics. J Control Release 2015; 219:519-535. [PMID: 26359125 DOI: 10.1016/j.jconrel.2015.09.001] [Citation(s) in RCA: 102] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2015] [Revised: 09/02/2015] [Accepted: 09/03/2015] [Indexed: 01/10/2023]
Abstract
Biologically derived therapeutics, or biologics, are the most rapidly growing segment of the pharmaceutical marketplace. However, there are still unmet needs in improving the delivery of biologics. Injectable polymeric nanoparticles and microparticles capable of releasing proteins and peptides over time periods as long as weeks or months have been a major focus in the effort to decrease the frequency of administration. These particle systems fit broadly into two categories: those composed of hydrophilic and those composed of hydrophobic polymeric scaffolds. Here we review the factors that contribute to the slow and controlled release from each class of particle, as well as the effects of synthesis parameters and product design on the loading, encapsulation efficiency, biologic integrity, and release profile. Generally, hydrophilic scaffolds are ideal for large proteins while hydrophobic scaffolds are more appropriate for smaller biologics without secondary structure. Here we also introduce a Flash NanoPrecipitation method that has been adopted for encapsulating biologics in nanoparticles (40-200nm) at high loadings (50-75wt.%) and high encapsulation efficiencies. The hydrophilic gel interior and hydrophobic shell provide an opportunity to combine the best of both classes of injectable polymeric depots.
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Affiliation(s)
- Robert F Pagels
- Department of Chemical and Biological Engineering, Princeton University, Princeton, NJ 08544, United States
| | - Robert K Prud'homme
- Department of Chemical and Biological Engineering, Princeton University, Princeton, NJ 08544, United States.
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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: 2.4] [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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18
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Insulin-loaded poly-l-lactide porous microspheres prepared in supercritical CO2 for pulmonary drug delivery. J Supercrit Fluids 2015. [DOI: 10.1016/j.supflu.2015.03.010] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Kim SY, Hwang JY, Seo JW, Shin US. Production of CNT-taxol-embedded PCL microspheres using an ammonium-based room temperature ionic liquid: As a sustained drug delivery system. J Colloid Interface Sci 2015; 442:147-53. [DOI: 10.1016/j.jcis.2014.11.044] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2014] [Revised: 11/15/2014] [Accepted: 11/17/2014] [Indexed: 11/25/2022]
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20
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Teekamp N, Duque LF, Frijlink HW, Hinrichs WLJ, Olinga P. Production methods and stabilization strategies for polymer-based nanoparticles and microparticles for parenteral delivery of peptides and proteins. Expert Opin Drug Deliv 2015; 12:1311-31. [DOI: 10.1517/17425247.2015.1003807] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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21
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Abstract
INTRODUCTION Proteins are effective biotherapeutics with applications in diverse ailments. Despite being specific and potent, their full clinical potential has not yet been realized. This can be attributed to short half-lives, complex structures, poor in vivo stability, low permeability, frequent parenteral administrations and poor adherence to treatment in chronic diseases. A sustained release system, providing controlled release of proteins, may overcome many of these limitations. AREAS COVERED This review focuses on recent development in approaches, especially polymer-based formulations, which can provide therapeutic levels of proteins over extended periods. Advances in particulate, gel-based formulations and novel approaches for extended protein delivery are discussed. Emphasis is placed on dosage form, method of preparation, mechanism of release and stability of biotherapeutics. EXPERT OPINION Substantial advancements have been made in the field of extended protein delivery via various polymer-based formulations over last decade despite the unique delivery-related challenges posed by protein biologics. A number of injectable sustained-release formulations have reached market. However, therapeutic application of proteins is still hampered by delivery-related issues. A large number of protein molecules are under clinical trials, and hence, there is an urgent need to develop new methods to deliver these highly potent biologics.
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Affiliation(s)
- Ravi Vaishya
- University of Missouri-Kansas City, Pharmaceutical Sciences , Kansas City, MO , USA
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22
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Preparation of amphiphilic hollow carbon nanosphere loaded insulin for oral delivery. Colloids Surf B Biointerfaces 2013. [DOI: 10.1016/j.colsurfb.2012.10.043] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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23
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Evaluation of Poly (1, 6-bis-(p-carboxyphenoxy) Hexane-co-sebacic Acid Microspheres for Controlled Basal Insulin Delivery. Pharm Res 2012; 30:627-40. [DOI: 10.1007/s11095-012-0880-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2012] [Accepted: 08/29/2012] [Indexed: 10/27/2022]
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24
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Jain S, Rathi VV, Jain AK, Das M, Godugu C. Folate-decorated PLGA nanoparticles as a rationally designed vehicle for the oral delivery of insulin. Nanomedicine (Lond) 2012; 7:1311-37. [DOI: 10.2217/nnm.12.31] [Citation(s) in RCA: 125] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
Aims: The present study reports a novel approach for enhancing the oral absorption and hypoglycemic activity of insulin via encapsulation in folate-(FA) coupled polyethylene glycol (PEG)ylated polylactide-co-glycolide (PLGA) nanoparticles (NPs; FA-PEG-PLGA NPs). Materials & methods: Insulin-loaded FA-PEG-PLGA NPs (size ∼260 nm; insulin loading ∼6.5% [w/w]; encapsulation efficiency: 87.0 ± 1.92%) were prepared by double-emulsion solvent evaporation method. The bioavailability and hypoglycemic activity of orally administered FA–insulin NPs were studied in diabetic rats. Results & conclusion: FA-PEG-PLGA NPs (50 U/kg) exhibited a twofold increase in the oral bioavailability (double hypoglycemia) without any hypoglycemic shock as compared to subcutaneously administered standard insulin solution. Insulin NPs maintained a continual blood glucose level for 24 h, which, however, was transient (<8 h) in the case of subcutaneous insulin and associated with severe hypoglycemic shock. Overall, we have developed a patient-compliant, oral nanoformulation of insulin, once-daily administration of which would be sufficient to control diabetes for at least 24 h. Original submitted 16 November 2011; Revised submitted 2 February 2012; Published online 14 May 2012
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Affiliation(s)
- Sanyog Jain
- Centre for Pharmaceutical Nanotechnology, Department of Pharmaceutics, National Institute of Pharmaceutical Education & Research (NIPER), Sector 67, S.A.S. Nagar, (Mohali), Punjab 160062, India
| | - Vishal V Rathi
- Centre for Pharmaceutical Nanotechnology, Department of Pharmaceutics, National Institute of Pharmaceutical Education & Research (NIPER), Sector 67, S.A.S. Nagar, (Mohali), Punjab 160062, India
| | - Amit K Jain
- Centre for Pharmaceutical Nanotechnology, Department of Pharmaceutics, National Institute of Pharmaceutical Education & Research (NIPER), Sector 67, S.A.S. Nagar, (Mohali), Punjab 160062, India
| | - Manasmita Das
- Centre for Pharmaceutical Nanotechnology, Department of Pharmaceutics, National Institute of Pharmaceutical Education & Research (NIPER), Sector 67, S.A.S. Nagar, (Mohali), Punjab 160062, India
| | - Chandraiah Godugu
- Centre for Pharmaceutical Nanotechnology, Department of Pharmaceutics, National Institute of Pharmaceutical Education & Research (NIPER), Sector 67, S.A.S. Nagar, (Mohali), Punjab 160062, India
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Abstract
Proteins constitute an increasing proportion of the drugs in development. The barriers to their entry into the blood stream and rapid clearance means that they often have to be injected several times a day, affecting patient compliance. This paper reviews the major technologies enabling the development of injectable sustained-release products and formulation strategies to maintain protein integrity and modify release rates. Whilst many injectable sustained-release products are on the market, these are all delivering small molecular weight drugs and peptides. This is due to the manufacturing processes that denature and degrade the proteins upon encapsulation and release into the body. Formulation strategies are discussed and a number of new technologies reviewed that are able to overcome the issues with conventional manufacturing processes. The reliance of many processes on organic solvents has prevented their application to the development of injectable sustained release protein products. The development of entirely solvent free and aqueous methods of manufacture of these products has meant that numerous sustained-release protein products are close to reaching the market.
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Presmanes C, de Miguel L, Espada R, Alvarez C, Morales E, Torrado JJ. Effect of PLGA hydrophilia on the drug release and the hypoglucemic activity of different insulin-loaded PLGA microspheres. J Microencapsul 2011; 28:791-8. [PMID: 21967461 DOI: 10.3109/02652048.2011.621554] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The effects of viscosity and hydrophilic characteristics of different PLGA polymers on the microencapsulation of insulin have been studied in vitro and in vivo after subcutaneous administration to hyperglycemic rats. Hydrophilic PLGA polymers produced a higher burst effect than the hydrophobic ones. Moreover, an incomplete insulin release was observed with the hydrophilic PLGA polymers in comparison with the hydrophobic ones. An explanation for that incomplete release can be the development of polymer-insulin interactions associated to the polymer hydrophilic/hydrophobic character, as detected by DSC analysis. Differences in the release rate of microsphere formulations lead to differences in the hypoglycemic action and the weight of animals. Hydrophobic PLGA was able to prolong the hypoglycemic action up to 4 weeks which is at least double than that obtained with hydrophilic PLGA of a similar viscosity. Comparing insulin microspheres with an immediate release formulation, microspheres can increase insulin relative bioavailability up to four times.
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Affiliation(s)
- C Presmanes
- Instituto de Farmacia Industrial, Facultad de Farmacia, Universidad Complutense de Madrid, Plaza Ramón y Cajal sn 28040, Spain
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27
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Xiao D, Gömmel C, Davidson PM, Zhong Q. Intrinsic Tween 20 improves release and antilisterial properties of co-encapsulated nisin and thymol. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2011; 59:9572-9580. [PMID: 21812480 DOI: 10.1021/jf201864v] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Antimicrobial delivery systems have been proposed as potential solutions to improve effectiveness of antimicrobials in food matrixes by shielding antimicrobials from contacting food matrix components and releasing them continuously. In this work, spray-dried capsules were produced from zein solutions with the same concentrations of nisin and thymol but with varying Tween 20 contents for characterization of release kinetics of antimicrobials and antilisterial properties. At intermediate levels of Tween 20, sustained and more complete release of antimicrobials was observed at pH 6.0 and 8.0. Most capsule samples were more effective than free antimicrobials against Listeria monocytogenes in 2% reduced fat milk, and the best capsule treatment reduced the bacterial population by 2 log CFU/mL more than comparable free antimicrobials after 4 h incubation at 25 °C. Our work demonstrated that nonionic surfactant can be conveniently used to modulate characteristics of delivery systems to effectively improve antimicrobial functions in food systems.
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Affiliation(s)
- Dan Xiao
- Department of Food Science and Technology, The University of Tennessee, Knoxville, Tennessee 37996, United States
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28
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Abstract
Whilst oral vaccination is a potentially preferred route in terms of patient adherence and mass vaccination, the ability to formulate effective oral vaccines remains a challenge. The primary barrier to oral vaccination is effective delivery of the vaccine through the GI tract owing to the many obstacles it presents, including low pH, enzyme degradation and bile-salt solubilization, which can result in breakdown/deactivation of a vaccine. For effective immune responses after oral administration, particulates need to be taken up by the M cells however, these are few in number. To enhance M-cell uptake, particle characteristics can be optimized with particle size, surface charge, targeting groups and bioadhesive properties all being considerations. Yet improved uptake may not translate into enhanced immune responses and formulating particulates with inherent adjuvant properties can offer advantages. Within this article, we establish the options available for consideration when building effective oral particulate vaccines.
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29
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Xiao D, Zhong Q. In vitro release kinetics of nisin as affected by Tween 20 and glycerol co-encapsulated in spray-dried zein capsules. J FOOD ENG 2011. [DOI: 10.1016/j.jfoodeng.2011.04.009] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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30
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Santagapita PR, Mazzobre MF, Buera MP. Formulation and drying of alginate beads for controlled release and stabilization of invertase. Biomacromolecules 2011; 12:3147-55. [PMID: 21809830 DOI: 10.1021/bm2009075] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Several alternatives to the conventional alginate beads formulation were studied for encapsulation of invertase. Pectin was added to the alginate/enzyme solution while trehalose and β-cyclodextrin were added to the calcium gelation media. The effect of composition changes, freezing, drying methods (freeze, vacuum, or air drying), and thermal treatment were evaluated on invertase stability and its release kinetics from beads. The enzyme release mechanism from wet beads depended on pH. The addition of trehalose, pectin, and β-cyclodextrin modified the bead structure, leading in some cases to a release mechanism that included the relaxation of the polymer chains, besides Fickian diffusion. Enzyme release from vacuum-dried beads was much faster than from freeze-dried beads, probably due to their higher pore size. The inclusion of β-cyclodextrin and especially of pectin prevented enzyme activity losses during bead generation, and trehalose addition was fundamental for achieving adequate invertase protection during freezing, drying, and thermal treatment. Present results showed that several alternatives such as drying method, composition, as well as pH of the relese medium can be managed to control enzyme release.
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Affiliation(s)
- Patricio R Santagapita
- Industry Department and Organic Chemistry Department, Faculty of Exact and Natural Sciences, University of Buenos Aires and National Council of Scientific and Technical Research, Buenos Aires, Argentina
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31
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Ubaidulla U, Khar RK, Ahmed FJ, Panda AK. Development and in-vivo evaluation of insulin-loaded chitosan phthalate microspheres for oral delivery. J Pharm Pharmacol 2010; 59:1345-51. [PMID: 17910808 DOI: 10.1211/jpp.59.10.0003] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
Abstract
Novel chitosan phthalate microspheres containing insulin were prepared by emulsion cross-linking technique. The feasibility of these microspheres as oral insulin delivery carriers was evaluated. The pH-responsive release behaviour of insulin from microspheres was analysed. The ability of chitosan phthalate-insulin microspheres to enhance intestinal absorption and improve the relative pharmacological availability of insulin was investigated by monitoring the plasma glucose and insulin level of streptozotocin-induced diabetic rats after oral administration of microspheres at insulin dose of 20 IU kg−1. In simulated gastric fluid (pH 2.0), insulin release from the microspheres was very slow. However, as the pH of the medium was changed to simulated intestinal fluid (pH 7.4), a rapid release of insulin occurred. The relative pharmacological efficacy for chitosan phthalate microspheres (18.66 ± 3.84%) was almost four-fold higher than the efficacy of the chitosan phthalate-insulin solution administration (4.08 ± 1.52%). Chitosan phthalate microspheres sustained the plasma glucose at pre-diabetic level for at least 16 h. These findings suggest that the microsphere is a promising carrier as oral insulin delivery system.
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Affiliation(s)
- Udhumansha Ubaidulla
- Department of Pharmaceutics, Faculty of Pharmacy, Hamdard University, New Delhi, India.
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32
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Manoharan C, Singh J. Evaluation of polyanhydride microspheres for basal insulin delivery: Effect of copolymer composition and zinc salt on encapsulation, in vitro release, stability, in vivo absorption and bioactivity in diabetic rats. J Pharm Sci 2009; 98:4237-50. [DOI: 10.1002/jps.21741] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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33
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Goycoolea FM, Lollo G, Remuñán-López C, Quaglia F, Alonso MJ. Chitosan-Alginate Blended Nanoparticles as Carriers for the Transmucosal Delivery of Macromolecules. Biomacromolecules 2009; 10:1736-43. [PMID: 19545119 DOI: 10.1021/bm9001377] [Citation(s) in RCA: 148] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Francisco M. Goycoolea
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Santiago de Compostela, Spain, CIAD, Laboratory of Biopolymers, P.O. Box 1735, Hermosillo, 83000 Mexico, and Department of Pharmaceutical and Toxicological Chemistry, University of Napoli Federico II, Via Domenico Montesano 49, 80131 Napoli, Italy
| | - Giovanna Lollo
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Santiago de Compostela, Spain, CIAD, Laboratory of Biopolymers, P.O. Box 1735, Hermosillo, 83000 Mexico, and Department of Pharmaceutical and Toxicological Chemistry, University of Napoli Federico II, Via Domenico Montesano 49, 80131 Napoli, Italy
| | - Carmen Remuñán-López
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Santiago de Compostela, Spain, CIAD, Laboratory of Biopolymers, P.O. Box 1735, Hermosillo, 83000 Mexico, and Department of Pharmaceutical and Toxicological Chemistry, University of Napoli Federico II, Via Domenico Montesano 49, 80131 Napoli, Italy
| | - Fabiana Quaglia
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Santiago de Compostela, Spain, CIAD, Laboratory of Biopolymers, P.O. Box 1735, Hermosillo, 83000 Mexico, and Department of Pharmaceutical and Toxicological Chemistry, University of Napoli Federico II, Via Domenico Montesano 49, 80131 Napoli, Italy
| | - María J. Alonso
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Santiago de Compostela, Spain, CIAD, Laboratory of Biopolymers, P.O. Box 1735, Hermosillo, 83000 Mexico, and Department of Pharmaceutical and Toxicological Chemistry, University of Napoli Federico II, Via Domenico Montesano 49, 80131 Napoli, Italy
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34
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Zhong Q, Jin M. Nanoscalar structures of spray-dried zein microcapsules and in vitro release kinetics of the encapsulated lysozyme as affected by formulations. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2009; 57:3886-3894. [PMID: 19415929 DOI: 10.1021/jf803951a] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Sustained release of antimicrobials may be a viable solution to enhance the bioavailability during the shelf life of food products. In this work, spray-drying was used to encapsulate a model antimicrobial of lysozyme in corn zein. The effects of zein/lysozyme (20:1 to 4:1) and zein/thymol (1:0 to 4:1) ratios on the microstructures of microcapsules and in vitro release profiles of the encapsulated lysozyme were investigated. In all cases, less lysozyme was released at higher pH, resulting from stronger molecular attraction between zein and lysozyme. Nanoscalar matrix structures of microcapsules were correlated with release characteristics of the encapsulated lysozyme. At intermediate zein/lysozyme (10:1) and zein/thymol (50:1) ratios, microcapsules had a continuous matrix structure and showed sustained release (11.1-65.3%) of lysozyme at pH 6 over 49 days. This work may be developed into practical food grade delivery systems of antimicrobials.
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Affiliation(s)
- Qixin Zhong
- Department of Food Science and Technology, University of Tennessee, Knoxville, Tennessee 37996, USA.
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35
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Emami J, Hamishehkar H, Najafabadi AR, Gilani K, Minaiyan M, Mahdavi H, Nokhodchi A. A Novel Approach to Prepare Insulin-Loaded Poly (Lactic-Co-Glycolic Acid) Microcapsules and the Protein Stability Study. J Pharm Sci 2009; 98:1712-31. [DOI: 10.1002/jps.21544] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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36
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Singh B, Chauhan N. Modification of psyllium polysaccharides for use in oral insulin delivery. Food Hydrocoll 2009. [DOI: 10.1016/j.foodhyd.2008.06.004] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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37
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Insulin-loaded PLGA/cyclodextrin large porous particles with improved aerosolization properties: in vivo deposition and hypoglycaemic activity after delivery to rat lungs. J Control Release 2008; 135:25-34. [PMID: 19154761 DOI: 10.1016/j.jconrel.2008.12.011] [Citation(s) in RCA: 133] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2008] [Revised: 12/04/2008] [Accepted: 12/06/2008] [Indexed: 11/22/2022]
Abstract
The aim of the present work is to develop large porous particles (LPP) of poly (lactide-co-glycolide) (PLGA) containing insulin with optimal aerodynamic properties and to test their in vivo potential, in pulmonary delivery. Insulin-loaded LPP were fabricated by a double emulsion method by aid of hydroxypropyl-beta-cyclodextrin (HPbetaCD). Conceiving this system for the controlled release of insulin to the lungs, the aerosolization properties and the release features in simulated lung fluids of PLGA/HPbetaCD/insulin LPP were investigated in depth. The technological results show that the combination of appropriate amounts of insulin and HPbetaCD plays a crucial role to achieve PLGA/HPbetaCD/insulin LPP with the desired bulk and aerodynamic properties, that is a highly porous structure, a very low density (0.1 g/ml), an experimental mass mean aerodynamic diameter (MMAD(exp)) ranging from 4.01 to 7.00 and a fine particle fraction (FPF) estimated to be 26.9-89.6% at the different airflow rates tested (i.e. 30-90 l/min). Confocal microscopy studies, performed after administration of labeled PLGA/HPbetaCD/insulin LPP to the rat lung by means of a low-scale dry powder inhaler (DPI), suggest that particles reach alveoli and remain in situ after delivery. The pharmacological effect of PLGA/HPbetaCD/insulin LPP was confirmed by dose-response studies performed on both normoglycaemic and streptozotocin-induced diabetic rats. While insulin solutions administered via pulmonary route are unable to cause a significant hypoglycaemic effect, insulin delivered through PLGA/HPbetaCD/insulin LPP at the same doses (0.5-4.0 IU/kg) significantly reduces blood glucose level as a function of the administered dose in both animal models. The developed LPP, tested in hyperglycaemic rats at evident pathological conditions, exerts a very significant and longer hypoglycaemic effect even at insulin doses as low as 0.5 IU/kg (about 0.5 mg of PLGA/HPbetaCD/insulin LPP per rat) as compared to a insulin solution. Taken together, our results support the viability of a dry powder formulation based on biodegradable LPP for the controlled release of insulin to the lungs. In vivo data show that PLGA/HPbetaCD/insulin LPP are able to reach alveoli, release insulin, which is absorbed in its bioactive form.
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38
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Miro A, Rondinone A, Nappi A, Ungaro F, Quaglia F, La Rotonda MI. Modulation of release rate and barrier transport of Diclofenac incorporated in hydrophilic matrices: role of cyclodextrins and implications in oral drug delivery. Eur J Pharm Biopharm 2008; 72:76-82. [PMID: 19135532 DOI: 10.1016/j.ejpb.2008.12.006] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2008] [Revised: 12/09/2008] [Accepted: 12/11/2008] [Indexed: 01/12/2023]
Abstract
The aim of this work was to investigate how the incorporation of a hydrophilic cyclodextrin (CD) inside erodible hydrophilic matrices affects drug-release behavior and transport properties through artificial and biological membranes. To this purpose, Diclofenac (Dic) was incorporated in poly(ethyleneoxide) (PEO) matrices as poorly soluble free acid (DicH) or freely water-soluble sodium salt (DicNa) in the presence or absence of hydroxypropyl-beta-cyclodextrin (HP beta CD). Preliminary experiments demonstrated that HP beta CD increased Dic apparent solubility as a function of its amount in the solution and medium pH due to complex formation. Permeation of ionized Dic through porcine buccal mucosa gave higher values of J(SS) and K(p) as compared to silicon membranes and depended on the presence of HP beta CD. Incorporation of HP beta CD in PEO tablets resulted in an increase of release rate for both forms of Dic whereas cumulative drug flux through silicon membranes and porcine buccal mucosa was increased for DicH and decreased for DicNa. An interpretation of this behavior was attempted on the basis of the presence of a transport resistance occurring inside the hydrated gel matrix as modified by the presence of CD. In conclusion, this study has demonstrated that the use of CDs in hydrophilic matrices intended for oral drug delivery should be rationalized since their modulator effect relies not only on drug-dissolution rate but also on environment where drug release occurs (aqueous medium, membrane interface).
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Affiliation(s)
- Agnese Miro
- Department of Pharmaceutical and Toxicological Chemistry, University of Naples Federico II, Naples, Italy
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39
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40
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Lin YH, Sonaje K, Lin KM, Juang JH, Mi FL, Yang HW, Sung HW. Multi-ion-crosslinked nanoparticles with pH-responsive characteristics for oral delivery of protein drugs. J Control Release 2008; 132:141-9. [DOI: 10.1016/j.jconrel.2008.08.020] [Citation(s) in RCA: 124] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2008] [Revised: 07/04/2008] [Accepted: 08/29/2008] [Indexed: 10/21/2022]
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41
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Kumar PS, Saini TR, Chandrasekar D, Yellepeddi VK, Ramakrishna S, Diwan PV. Novel Approach for Delivery of Insulin Loaded Poly(lactide-co-glycolide) Nanoparticles Using a Combination of Stabilizers. Drug Deliv 2008; 14:517-23. [DOI: 10.1080/10717540701606467] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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42
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Gaskell EE, Hobbs G, Rostron C, Hutcheon GA. Encapsulation and release ofα-chymotrypsin from poly(glycerol adipate-co-ω-pentadecalactone) microparticles. J Microencapsul 2008; 25:187-95. [DOI: 10.1080/02652040701848775] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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43
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Graves RL, Makoid MC, Jonnalagadda S. The effect of coencapsulation of bovine insulin with cyclodextrins in ethylcellulose microcapsules. J Microencapsul 2008; 22:661-70. [PMID: 16401581 DOI: 10.1080/02652040500161917] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Polymeric microcapsules have been widely investigated for protein delivery. Common problems include: low stability, low encapsulation efficiency, lack of uniformity, and burst release. Cyclodextrins (CDs) are known to enhance stability and solubility of proteins in solution. This research examines the effect of alpha-, beta-, and gamma-CDs on: (1) stability, (2) encapsulation, and (3) release of insulin from ethylcellulose microcapsules. All CDs improved thermal stability of insulin by lowering the enthalpy of unfolding by 16-52%. alpha- and gamma-CDs also increased the encapsulation efficiency of insulin and improved uniformity of the microcapsule formulations. Two mathematical models were proposed to account for insulin release and consisted of multiple zero order and first order input processes, and a single first order output process. All CDs decreased the initial burst release of insulin by up to 30%. This research demonstrates the potential for CDs to improve stability, uniformity, and encapsulation of proteins in microcapsule formulations.
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Affiliation(s)
- R L Graves
- University of the Sciences in Philadelphia, Philadelphia, Pennsylvania 19104, USA
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44
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Mi FL, Wu YY, Lin YH, Sonaje K, Ho YC, Chen CT, Juang JH, Sung HW. Oral delivery of peptide drugs using nanoparticles self-assembled by poly(gamma-glutamic acid) and a chitosan derivative functionalized by trimethylation. Bioconjug Chem 2008; 19:1248-55. [PMID: 18517235 DOI: 10.1021/bc800076n] [Citation(s) in RCA: 101] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In the study, chitosan (CS) was conjugated with trimethyl groups for the synthesis of N-trimethyl chitosan (TMC) polymers with different degrees of quaternization. Nanoparticles (NPs) self-assembled by the synthesized TMC and poly(gamma-glutamic acid) (gamma-PGA, TMC/gamma-PGA NPs) were prepared for oral delivery of insulin. The loading efficiency and loading content of insulin in TMC/gamma-PGA NPs were 73.8 +/- 2.9% and 23.5 +/- 2.1%, respectively. TMC/gamma-PGA NPs had superior stability in a broader pH range to CS/gamma-PGA NPs; the in vitro release profiles of insulin from both test NPs were significantly affected by their stability at distinct pH environments. At pH 7.0, CS/gamma-PGA NPs became disintegrated, resulting in a rapid release of insulin, which failed to provide an adequate retention of loaded insulin, while the cumulative amount of insulin released from TMC/gamma-PGA NPs was significantly reduced. At pH 7.4, TMC/gamma-PGA NPs were significantly swelled and a sustained release profile of insulin was observed. Confocal microscopy confirmed that TMC40/gamma-PGA NPs opened the tight junctions of Caco-2 cells to allow the transport of insulin along the paracellular pathway. Transepithelial-electrical-resistance measurements and transport studies implied that CS/gamma-PGA NPs can be effective as an insulin carrier only in a limited area of the intestinal lumen where the pH values are close to the p K a of CS. In contrast, TMC40/gamma-PGA NPs may be a suitable carrier for transmucosal delivery of insulin within the entire intestinal tract.
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Affiliation(s)
- Fwu-Long Mi
- Department of Biotechnology, Vanung University, Chungli, Taoyuan, ROC
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Microencapsulation Based on Emulsification for Producing Pharmaceutical Products: A Literature Review. ACTA ACUST UNITED AC 2008. [DOI: 10.1002/apj.5500140318] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Maestrelli F, Zerrouk N, Cirri M, Mennini N, Mura P. Microspheres for colonic delivery of ketoprofen-hydroxypropyl-β-cyclodextrin complex. Eur J Pharm Sci 2008; 34:1-11. [DOI: 10.1016/j.ejps.2008.02.001] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2007] [Revised: 01/24/2008] [Accepted: 02/05/2008] [Indexed: 10/22/2022]
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Rawat A, Majumder QH, Ahsan F. Inhalable large porous microspheres of low molecular weight heparin: in vitro and in vivo evaluation. J Control Release 2008; 128:224-32. [PMID: 18471921 DOI: 10.1016/j.jconrel.2008.03.013] [Citation(s) in RCA: 100] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2007] [Revised: 03/05/2008] [Accepted: 03/13/2008] [Indexed: 12/28/2022]
Abstract
This study tests the feasibility of large porous particles as long-acting carriers for pulmonary delivery of low molecular weight heparin (LMWH). Microspheres were prepared with a biodegradable polymer, poly(lactic-co-glycolic acid) (PLGA), by a double-emulsion-solvent-evaporation technique. The drug entrapment efficiencies of the microspheres were increased by modifying them with three different additivespolyethyleneimine (PEI), Span 60 and stearylamine. The resulting microspheres were evaluated for morphology, size, zeta potential, density, in vitro drug-release properties, cytotoxicity, and for pulmonary absorption in vivo. Scanning electron microscopic examination suggests that the porosity of the particles increased with the increase in aqueous volume fraction. The amount of aqueous volume fraction and the type of core-modifying agent added to the aqueous interior had varying degrees of effect on the size, density and aerodynamic diameter of the particles. When PEI was incorporated in the internal aqueous phase, the entrapment efficiency was increased from 16.22+/-1.32% to 54.82+/-2.79%. The amount of drug released in the initial burst phase and the release-rate constant for the core-modified microspheres were greater than those for the plain microspheres. After pulmonary administration, the half-life of the drug from the PEI- and stearylamine-modified microspheres was increased by 5- to 6-fold compared to the drug entrapped in plain microspheres. The viability of Calu-3 cells was not adversely affected when incubated with the microspheres. Overall, the data presented here suggest that the newly developed porous microspheres of LMWH have the potential to be used in a form deliverable by dry-powder inhaler as an alternative to multiple parenteral administrations of LMWH.
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Affiliation(s)
- Amit Rawat
- Department of Pharmaceutical Sciences, School of Pharmacy, Texas Tech University, Health Sciences Center, 1300 Coulter Drive, Amarillo, TX 79106, United States
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Khafagy ES, Morishita M, Onuki Y, Takayama K. Current challenges in non-invasive insulin delivery systems: a comparative review. Adv Drug Deliv Rev 2007; 59:1521-46. [PMID: 17881081 DOI: 10.1016/j.addr.2007.08.019] [Citation(s) in RCA: 281] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2007] [Accepted: 08/16/2007] [Indexed: 11/22/2022]
Abstract
The quest to eliminate the needle from insulin delivery and to replace it with non- or less-invasive alternative routes has driven rigorous pharmaceutical research to replace the injectable forms of insulin. Recently, various approaches have been studied involving many strategies using various technologies that have shown success in delivering insulin, which are designed to overcome the inherent barriers for insulin uptake across the gastrointestinal tract, mucosal membranes and skin. This review examines some of the many attempts made to develop alternative, more convenient routes for insulin delivery to avoid existing long-term dependence on multiple subcutaneous injections and to improve the pharmacodynamic properties of insulin. In addition, this article concentrates on the successes in this new millennium in developing potential non-invasive technologies and devices, and on major new milestones in modern insulin delivery for the effective treatment of diabetes.
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Affiliation(s)
- El-Sayed Khafagy
- Department of Pharmaceutics, Hoshi University, Ebara 2-4-41, Shinagawa, Tokyo 142-8501, Japan
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Xu M, Sun L, Yin S, Liu C, Wu L. Monolayer behavior of a pyridyl head-group-containing amphiphile and its miscibility with poly(d,l-lactide-co-glycolide) on different pH subphase. J Colloid Interface Sci 2007; 316:912-20. [PMID: 17884071 DOI: 10.1016/j.jcis.2007.08.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2007] [Revised: 08/01/2007] [Accepted: 08/02/2007] [Indexed: 11/25/2022]
Abstract
In this paper, we investigated the Langmuir film and Langmuir-Blodgett (LB) monolayer film of a nonionic amphiphilic molecule, 4-(6-p-pyridyloxyl)hexyloxyl-4'-dodecyloxylazobenzene (C(12)AzoC(6)Py) and its mixture with poly(D,L-lactide-co-glycolide) (PLG) at different subphase pH values (2.0, 2.6, 3.3, 4.4, and 6.5, respectively) by surface pressure-area (pi-A) isotherms, in situ interface Brewster angle microscopy (BAM), and ex situ atomic force microscopy (AFM). For pure C(12)AzoC(6)Py, its pi-A isotherms display a plateau when the subphase pH value is lower than 3.0. The pressure of the plateau increases with the decrease of pH until 2.0. Over the plateau, the pi-A isotherms become almost identical to the one under neutral conditions. The appearance of such a plateau can be explained as the coexistence of protonation and unprotonation of pyridyl head groups of the employed amphiphile. In contrast to the homogeneous surface morphology of pure C(12)AzoC(6)Py near the plateau by BAM observation, the surface in the case of its mixing with PLG exhibits a dendritic crystalline state under low surface pressure at subphase pH lower than 3.0. The crystalline state becomes soft and gradually melts into homogeneous aggregates with surface pressure increasing to a higher value than that of the plateau. Meanwhile, the hydrolysis of PLG in the mixture system at the interface has been affirmed to be restrained to a very large extent. And the PLG was believed to be compelled to the up layer of the LB film due to the phase separation, which is examined by AFM. Based on the experimental results, the corresponding discussion was also performed.
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Affiliation(s)
- Miao Xu
- Key Laboratory for Supramolecular Structure and Materials of Ministry of Education, College of Chemistry, Jilin University, Changchun 130012, People's Republic of China
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