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Tarannum N, Pooja K. Recent trends and applications in the research and development activities of redispersible powder: a vision of twenty-first century. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-021-03928-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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2
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Ding M, Zhang T, Zhang H, Tao N, Wang X, Zhong J. Gelatin molecular structures affect behaviors of fish oil-loaded traditional and Pickering emulsions. Food Chem 2019; 309:125642. [PMID: 31685367 DOI: 10.1016/j.foodchem.2019.125642] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Revised: 09/07/2019] [Accepted: 10/01/2019] [Indexed: 01/15/2023]
Abstract
As the differences of traditional and Pickering emulsions might have resulted from stabilizer structures, this study analyzes the effects of gelatin molecular structures (uncrosslinked molecules vs. crosslinked molecules) on the preparation, long-term storage, and dilution of fish oil-loaded traditional and Pickering emulsions. Both traditional and Pickering emulsions have three types of droplets with different sizes, and all the droplet sizes were exponentially decreased with the increase of stabilizer concentration. Pickering emulsions have slightly lower droplet sizes compared with traditional emulsions. Traditional emulsions have three different emulsion forms (liquid, redispersible emulsion gel, and unredispersible emulsion gel), whereas Pickering emulsions only have the liquid form. Emulsion creaming stability was dependent on stabilizer molecular structures and stabilizer concentrations. The two emulsions have similar and good dilution stability. This work demonstrates that gelatin molecular structures affect droplet size, emulsion forms, and creaming stability, but not droplet size types and emulsion dilution stability.
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Affiliation(s)
- Mengzhen Ding
- Integrated Scientific Research Base on Comprehensive Utilization Technology for By-Products of Aquatic Product Processing, Ministry of Agriculture and Rural Affairs of the People's Republic of China, National R&D Branch Center for Freshwater Aquatic Products Processing Technology (Shanghai), Shanghai Engineering Research Center of Aquatic-Product Processing and Preservation, College of Food Science & Technology, Shanghai Ocean University, Shanghai 201306, China
| | - Ting Zhang
- Integrated Scientific Research Base on Comprehensive Utilization Technology for By-Products of Aquatic Product Processing, Ministry of Agriculture and Rural Affairs of the People's Republic of China, National R&D Branch Center for Freshwater Aquatic Products Processing Technology (Shanghai), Shanghai Engineering Research Center of Aquatic-Product Processing and Preservation, College of Food Science & Technology, Shanghai Ocean University, Shanghai 201306, China
| | - Huan Zhang
- Iowa State University, Ames Laboratory, Ames, IA 50011, USA
| | - Ningping Tao
- Integrated Scientific Research Base on Comprehensive Utilization Technology for By-Products of Aquatic Product Processing, Ministry of Agriculture and Rural Affairs of the People's Republic of China, National R&D Branch Center for Freshwater Aquatic Products Processing Technology (Shanghai), Shanghai Engineering Research Center of Aquatic-Product Processing and Preservation, College of Food Science & Technology, Shanghai Ocean University, Shanghai 201306, China
| | - Xichang Wang
- Integrated Scientific Research Base on Comprehensive Utilization Technology for By-Products of Aquatic Product Processing, Ministry of Agriculture and Rural Affairs of the People's Republic of China, National R&D Branch Center for Freshwater Aquatic Products Processing Technology (Shanghai), Shanghai Engineering Research Center of Aquatic-Product Processing and Preservation, College of Food Science & Technology, Shanghai Ocean University, Shanghai 201306, China
| | - Jian Zhong
- Integrated Scientific Research Base on Comprehensive Utilization Technology for By-Products of Aquatic Product Processing, Ministry of Agriculture and Rural Affairs of the People's Republic of China, National R&D Branch Center for Freshwater Aquatic Products Processing Technology (Shanghai), Shanghai Engineering Research Center of Aquatic-Product Processing and Preservation, College of Food Science & Technology, Shanghai Ocean University, Shanghai 201306, China.
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3
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Yi T, Zhang J. Effects of Hydrophilic Carriers on Structural Transitions and In Vitro Properties of Solid Self-Microemulsifying Drug Delivery Systems. Pharmaceutics 2019; 11:E267. [PMID: 31181811 PMCID: PMC6631422 DOI: 10.3390/pharmaceutics11060267] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 05/28/2019] [Accepted: 06/05/2019] [Indexed: 02/03/2023] Open
Abstract
Self-microemulsifying drug delivery systems (SMEDDS) offer potential for improving the oral bioavailability of poorly water-soluble drugs. However, their susceptibilities during long term storage and in vivo precipitation issues limit their successful commercial application. To overcome these limitations, SMEDDS can be solidified with solid carriers, thus producing solid self-microemulsifying drug delivery systems (S-SMEDDS). In this study, effects of various hydrophilic carriers on structural transitions and in vitro properties of S-SMEDDS were investigated in order to set up in vitro methods for screening out appropriate carriers for S-SMEDDS. Liquid SMEDDS was prepared and characterized using nimodipine as a model drug. The effects of various hydrophilic carriers on internal microstructure and solubilization of SMEDDS were investigated by conductivity measurement and in vitro dispersion test. The results showed that hydrophilic carriers including dextran 40, maltodextrin and PVP K30 seemed to delay the percolation transition of SMEDDS, allowing it to maintain a microstructure that was more conducive to drug dissolution, thus significantly increasing the solubilization of nimodipine in the self-microemulsifying system and decreasing drug precipitation when dispersed in simulated gastric fluid. S-SMEDDS of nimodipine were prepared by using spray drying with hydrophilic carriers. The effects of various hydrophilic carriers on in vitro properties of S-SMEDDS were investigated by using SEM, DSC, PXRD and in vitro dissolution. The results showed that properties of hydrophilic carriers, especially relative molecular mass of carriers, had obvious influences on surface morphologies of S-SMEDDS, reconstitution of microemulsion and physical state of nimodipine in S-SMEDDS. Considering that in vitro properties of S-SMEDDS are closely related to their pharmacokinetic properties in vivo, the simple and economical in vitro evaluation methods established in this paper can be used to screen solid carriers of S-SMEDDS well.
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Affiliation(s)
- Tao Yi
- School of Health Sciences, Macao Polytechnic Institute, Macao 999078, China.
| | - Jifen Zhang
- College of Pharmaceutical Sciences, Southwest University, Chongqing 400716, China.
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Sawatdee S, Atipairin A, Sae Yoon A, Srichana T, Changsan N, Suwandecha T. Formulation Development of Albendazole-Loaded Self-Microemulsifying Chewable Tablets to Enhance Dissolution and Bioavailability. Pharmaceutics 2019; 11:E134. [PMID: 30897738 PMCID: PMC6471907 DOI: 10.3390/pharmaceutics11030134] [Citation(s) in RCA: 24] [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: 02/20/2019] [Revised: 03/16/2019] [Accepted: 03/18/2019] [Indexed: 01/02/2023] Open
Abstract
Albendazole is an anthelmintic agent with poor solubility and absorption. We developed a chewable tablet (200 mg drug equivalent), containing a self-microemulsifying drug delivery system (SMEDDS), with oral disintegrating properties. The emulsion was developed using sesame and soybean oils along with surfactant/co-surfactants, and the tablets were prepared by wet granulation using superdisintegrants and adsorbents. Infra-red (IR) spectral studies revealed no interaction between the drug and excipients, and all physical and chemical parameters were within acceptable limits. Stability studies for the formulation indicated no significant change over time. An in vitro release study indicated 100% drug release within 30 min, and in vivo plasma concentrations indicated that the area under the curve (AUC) of albendazole in rats administered SMEDDS chewable tablets was significantly higher than in those administered commercial tablets or powder (p-value < 0.05). The systemic bioavailability of albendazole achieved through the SMEDDS tablets was 1.3 times higher than that achieved by the administration of comparable quantities of albendazole commercial tablets. This was due to the higher dissolution of albendazole SMEDDS in the chewable tablets. We conclude that the SMEDDS chewable formulation can be used to improve the dissolution and systemic availability of poorly water-soluble drugs.
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Affiliation(s)
- Somchai Sawatdee
- Drug and Cosmetics Excellence Center, Walailak University, Thasala, Nakhon Si Thammarat 80161, Thailand.
- School of Pharmacy, Walailak University, Thasala, Nakhon Si Thammarat 80161, Thailand.
| | - Apichart Atipairin
- Drug and Cosmetics Excellence Center, Walailak University, Thasala, Nakhon Si Thammarat 80161, Thailand.
- School of Pharmacy, Walailak University, Thasala, Nakhon Si Thammarat 80161, Thailand.
| | - Attawadee Sae Yoon
- Drug and Cosmetics Excellence Center, Walailak University, Thasala, Nakhon Si Thammarat 80161, Thailand.
- School of Pharmacy, Walailak University, Thasala, Nakhon Si Thammarat 80161, Thailand.
| | - Teerapol Srichana
- Drug Delivery System Excellence Center and Department of Pharmaceutical Technology, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand.
| | - Narumon Changsan
- Faculty of Pharmacy, Rangsit University, Pathumtani 12000, Thailand.
| | - Tan Suwandecha
- Department of Pharmacology, Faculty of Sciences, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand.
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5
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The Effect of Pharmaceutical Excipients for Applying to Spray-Dried Omega-3 Powder. APPLIED SCIENCES-BASEL 2019. [DOI: 10.3390/app9061177] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Omega-3 fatty acid plays a role in protecting cells in the human body, maintaining the structure of the cell, and helping smooth metabolism. Also, it inhibits the formation of blood clotting and is effective in enhancing the formation of bone. However, the instability due to fatty acid oxidation and a fishy smell are the reasons it is avoided by people. In this study, we tried to obtain the omega-3 powder through spray-drying method using a variety of binders and surfactants for improving the limit of omega-3 fatty acid. First of all, an olive oil was used instead of omega-3 for optimization of the preparation of spray-dried omega-3 powder. Through the screening of binders and surfactants, γ-cyclodextrin and hydrogenated lecithin were chosen as a binder and a surfactant, respectively. Omega-3-loaded spray-dried powder was obtained, eventually. The morphology of omega-3-loaded spray-dried powder was spherical of 310 nm and the DHA amount was 98%. This study suggested that the transformation of omega-3 fatty acid into solid state by spray-drying using a binder and a surfactant was successively performed.
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Jawad R, Elleman C, Martin GP, Royall PG. Crystallisation of freeze-dried sucrose in model mixtures that represent the amorphous sugar matrices present in confectionery. Food Funct 2018; 9:4621-4634. [DOI: 10.1039/c8fo00729b] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Sucrose crystallization is highly dependent on the presence of other common food ingredients within an amorphous freeze-dried matrix.
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Affiliation(s)
- Rim Jawad
- Institute of Pharmaceutical Science
- King's College London
- London SE1 9NH
- UK
| | - Carole Elleman
- The Reading Science Centre
- Reading Scientific Services Ltd
- Reading RG6 6LA
- UK
| | - Gary P. Martin
- Institute of Pharmaceutical Science
- King's College London
- London SE1 9NH
- UK
| | - Paul G. Royall
- Institute of Pharmaceutical Science
- King's College London
- London SE1 9NH
- UK
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7
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Sritham E, Gunasekaran S. Enthalpy relaxation in sucrose-maltodextrin-sodium citrate bioglass. J FOOD ENG 2017. [DOI: 10.1016/j.jfoodeng.2017.04.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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8
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Kulawik-Pióro A, Tal-Figiel B. Influence of Preparation Method on Size Distribution of the Dispersed Phase of Primary Emulsions. Chem Eng Technol 2017. [DOI: 10.1002/ceat.201500746] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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9
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Effects of media, heat adaptation, and outlet temperature on the survival of Lactobacillus salivarius NRRL B-30514 after spray drying and subsequent storage. Lebensm Wiss Technol 2016. [DOI: 10.1016/j.lwt.2016.08.008] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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10
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Development and pharmacokinetic evaluation of spray-dried self-nanoemulsifying drug delivery system of sertraline. JOURNAL OF PHARMACEUTICAL INVESTIGATION 2016. [DOI: 10.1007/s40005-016-0263-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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11
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Development of a solidified self-microemulsifying drug delivery system (S-SMEDDS) for atorvastatin calcium with improved dissolution and bioavailability. Int J Pharm 2016; 506:302-11. [PMID: 27125455 DOI: 10.1016/j.ijpharm.2016.04.059] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2016] [Revised: 04/12/2016] [Accepted: 04/22/2016] [Indexed: 11/21/2022]
Abstract
To improve the dissolution and oral bioavailability (BA) of atorvastatin calcium (ATV), we previously introduced an optimized self-microemulsifying drug delivery system (SMEDDS) using Capmul(®) MCM (oil), Tween(®) 20 (surfactant), and tetraglycol (cosurfactant). In this study, various solid carriers were employed to develop a solidified SMEDDS (S-SMEDDS): mannitol (M) and lactose (L) as water-soluble carriers, and Sylysia(®) 350 (S) and Aerosil(®) 200 (A) as water-insoluble carriers. Maximum solidifying capacities (SCmax) of water-insoluble carriers were significantly greater than those of water-soluble carriers were. The resultant powders were free flowing with an angle of repose <40° and Carr's index 5-20%, regardless of the solid carrier types. S-SMEDDS with mannitol (S(M)-SMEDDS) or lactose (S(L)-SMEDDS) had a smaller droplet size and greater dissolution than S-SMEDDS with Sylysia(®) 350 (S(S)-SMEDDS) or Aerosil(®) 200 (S(A)-SMEDDS). Following oral administration of various formulations to rats at a dose equivalent to 25mg/kg of ATV, plasma drug levels were measured by LC-MS/MS. The relative BAs (RBAs) of SMEDDS, S(M)-SMEDDS, and S(S)-SMEDDS were 345%, 216%, and 160%, respectively, compared to that of ATV suspension. Additionally, at a reduced dose of ATV equivalent to 5mg/kg, the RBAs of S(M)-SMEDDS and S(S)-SMEDDS compared to that of SMEDDS were 101% and 65%, respectively. These results suggest that S(M)-SEMDDS offers great potential for the development of solid dosage forms with improved oral absorption of drugs with poor water solubility.
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12
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Influence of pH value and locust bean gum concentration on the stability of sodium caseinate-stabilized emulsions. Food Hydrocoll 2013. [DOI: 10.1016/j.foodhyd.2013.01.010] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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13
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Tan A, Rao S, Prestidge CA. Transforming Lipid-Based Oral Drug Delivery Systems into Solid Dosage Forms: An Overview of Solid Carriers, Physicochemical Properties, and Biopharmaceutical Performance. Pharm Res 2013; 30:2993-3017. [DOI: 10.1007/s11095-013-1107-3] [Citation(s) in RCA: 101] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2013] [Accepted: 06/04/2013] [Indexed: 10/26/2022]
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14
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Sharma A, Jana AH, Chavan RS. Functionality of Milk Powders and Milk-Based Powders for End Use Applications-A Review. Compr Rev Food Sci Food Saf 2012. [DOI: 10.1111/j.1541-4337.2012.00199.x] [Citation(s) in RCA: 206] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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15
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Syamaladevi RM, Barbosa-Cánovas GV, Schmidt SJ, Sablani SS. Influence of molecular weight on enthalpy relaxation and fragility of amorphous carbohydrates. Carbohydr Polym 2012. [DOI: 10.1016/j.carbpol.2011.11.088] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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16
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Zhang J, Zheng Z, Gao Y, Zhang Y. Spray-dried oil-in-water emulsion to improve the intestinal absorption and oral bioavailability of ZLR-8, a nitric oxide-releasing derivative of diclofenac. J Pharm Pharmacol 2011; 63:1531-8. [DOI: 10.1111/j.2042-7158.2011.01357.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Abstract
Objectives
Spray-dried emulsion (SDE) was prepared and characterized to improve the intestinal absorption and oral bioavailability of ZLR-8, a nitric oxide-releasing derivative of diclofenac, currently under preclinical development.
Methods
The intestinal absorption of ZLR-8 was characterized by single pass intestinal perfusion technique to obtain its absorption and permeability parameters. SDE of ZLR-8 was prepared and characterized by particle size measurements and in-vitro release study. Accurate and precise RP-HPLC methods for the detection of ZLR-8 and its metabolite diclofenac were constructed to perform the bioavailability study.
Key findings
It was demonstrated that ZLR-8 was absorbed in the whole intestine, of which the duodenum segment exhibited the largest absorption ability. ZLR-8 can be classified into BCS Class 2. SDE significantly enhanced the intestinal absorption rate of ZLR-8 in duodenum and jejunum but had indistinctive effect on permeability. All concentrations of ZLR-8 in rat plasma was lower than the limit of detection. A bicompartment model gave the best fit to the plasma diclofenac concentration–time curves. Calculated on AUC0–12h, the mean relative bioavailability of SDE was 105.4-fold that of ZLR-8 suspension.
Conclusions
SDE significantly improved the intestinal absorption of ZLR-8 and resulted in a dramatic improvement in its bioavailability.
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Affiliation(s)
- Jianjun Zhang
- Department of Pharmaceutics, Weifang Medical University, Weifang, China
| | - Zengjuan Zheng
- Department of Pharmacy, Weifang Medical University, Weifang, China
| | - Yuan Gao
- School of Traditional Chinese Medicine, China Pharmaceutical University, Nanjing, Weifang Medical University, Weifang, China
| | - Yihua Zhang
- Center of Drug Discovery, Weifang Medical University, Weifang, China
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Shaji J, Patole V. Protein and Peptide drug delivery: oral approaches. Indian J Pharm Sci 2011; 70:269-77. [PMID: 20046732 PMCID: PMC2792531 DOI: 10.4103/0250-474x.42967] [Citation(s) in RCA: 148] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2006] [Revised: 02/18/2008] [Accepted: 05/05/2008] [Indexed: 11/16/2022] Open
Abstract
Till recent, injections remained the most common means for administering therapeutic proteins and peptides because of their poor oral bioavailability. However, oral route would be preferred to any other route because of its high levels of patient acceptance and long term compliance, which increases the therapeutic value of the drug. Designing and formulating a polypeptide drug delivery through the gastro intestinal tract has been a persistent challenge because of their unfavorable physicochemical properties, which includes enzymatic degradation, poor membrane permeability and large molecular size. The main challenge is to improve the oral bioavailability from less than 1% to at least 30-50%. Consequently, efforts have intensified over the past few decades, where every oral dosage form used for the conventional small molecule drugs has been used to explore oral protein and peptide delivery. Various strategies currently under investigation include chemical modification, formulation vehicles and use of enzyme inhibitors, absorption enhancers and mucoadhesive polymers. This review summarizes different pharmaceutical approaches which overcome various physiological barriers that help to improve oral bioavailability that ultimately achieve formulation goals for oral delivery.
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Affiliation(s)
- Jessy Shaji
- Department of Pharmaceutical Sciences, Prin. K. M. Kundnani College of Pharmacy, Cuffe Parade, Mumbai-400 005, India
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Physicochemical and pharmacokinetic characterization of a spray-dried malotilate emulsion. Int J Pharm 2011; 414:186-92. [PMID: 21619915 DOI: 10.1016/j.ijpharm.2011.05.032] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2011] [Revised: 04/16/2011] [Accepted: 05/11/2011] [Indexed: 11/23/2022]
Abstract
Malotilate (MT) is a hepatoprotective drug administered orally. However, MT was found to be a poorly water-soluble drug with low oral bioavailability. In the present investigation, a novel spray-dried emulsion (SDE) loaded with MT was prepared, and its physicochemical properties were characterized by rheological evaluation, particle size measurement, in vitro release, and surface morphology. The pharmacokinetic study of SDE, in comparison to MT suspension with the pure MT powder homogeneously dispersed in 0.5% CMC-Na solution, was also performed in rats after a single oral dose. It was found that SDE exhibited a 2.9-fold higher peak plasma concentration (C(max)) and 2.3-fold higher area under the curve (AUC) than MT suspension.
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Dixit RP, Nagarsenker MS. Optimized Microemulsions and Solid microemulsion Systems of Simvastatin: Characterization and In Vivo Evaluation. J Pharm Sci 2010; 99:4892-902. [DOI: 10.1002/jps.22208] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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21
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Utilisation of pectin coating to enhance spray-dry stability of pea protein-stabilised oil-in-water emulsions. Food Chem 2010. [DOI: 10.1016/j.foodchem.2009.04.017] [Citation(s) in RCA: 78] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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22
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Panda HS, Srivastava R, Bahadur D. In-vitro release kinetics and stability of anticardiovascular drugs-intercalated layered double hydroxide nanohybrids. J Phys Chem B 2010; 113:15090-100. [PMID: 19831399 DOI: 10.1021/jp905440e] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
We report the intercalation and characterization of pravastatin and fluvastatin drugs in Mg(II)/Al(III) layered double hydroxides (LDHs) to form novel nanohybrid hydroxides through the coprecipitation technique. powder X-ray diffraction, Fourier transform infrared spectroscopy, and thermal analysis techniques reveal that the drugs are accommodated within the brucite layers. Structural characterization, computed results, and atomic force microscopy image analysis demonstrate that the fluvastatin anions are attached with the brucite as a monolayer, whereas the pravastatin anions form a multilayer. The shift in the stretching frequency of carboxylate anion of statin drugs provides evidence that the drugs are electrostatically bonded to LDHs. X-ray diffraction and thermal analysis studies performed after keeping the nanohybrid particles at 75 +/- 10% relative humidity atmosphere, indicate their physical stability due to proper confinement of drugs within the layers. In-vitro release study of developed nanohybrid particles suggests that the significant reduction in release rate of fluvastatin anions from fluvastatin intercalated LDHs is due to its hydrophobic nature and it can be further controlled by varying the concentration in physiological medium. After release, the data were fitted to the dissolution-diffusion kinetic model. The mechanism of drugs diffusion in hydrophobic nanohybrid is probably due to heterogeneous diffusion via anion exchange, while in a hydrophilic nanohybrid, it is due to intraparticle diffusion via anion exchange with the anions in the physiological medium.
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Affiliation(s)
- H S Panda
- Department of Metallurgical Engineering and Materials Science, Indian Institute of Technology, Bombay, Mumbai-400076, India
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23
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Gallarate M, Mittone E, Carlotti ME, Trotta M, Piccerelle P. Formulation of Dry Emulsion for Topical Applications. J DISPER SCI TECHNOL 2009. [DOI: 10.1080/01932690802643998] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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24
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Learoyd TP, Burrows JL, French E, Seville PC. Modified release of beclometasone dipropionate from chitosan-based spray-dried respirable powders. POWDER TECHNOL 2008. [DOI: 10.1016/j.powtec.2008.02.015] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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25
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Dixit RP, Nagarsenker MS. Formulation and In Vivo Evaluation of Self-Nanoemulsifying Granules for Oral Delivery of a Combination of Ezetimibe and Simvastatin. Drug Dev Ind Pharm 2008; 34:1285-96. [DOI: 10.1080/03639040802071570] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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26
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Yi T, Wan J, Xu H, Yang X. A new solid self-microemulsifying formulation prepared by spray-drying to improve the oral bioavailability of poorly water soluble drugs. Eur J Pharm Biopharm 2008; 70:439-44. [DOI: 10.1016/j.ejpb.2008.05.001] [Citation(s) in RCA: 141] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2008] [Revised: 04/17/2008] [Accepted: 05/02/2008] [Indexed: 11/29/2022]
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27
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Alencar J, Gosset G, Rahmouni H, Culcasi M, Robin M, Reynier JP, Piccerelle P, Pietri S. Development of spray- and freeze-dried high-concentration sesamol emulsions and antioxidant evaluation in fibroblasts and UV-exposed rat skin slices. Drug Dev Res 2008. [DOI: 10.1002/ddr.20251] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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28
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Imamura K, Maruyama Y, Tanaka K, Yokoyama T, Imanaka H, Nakanishi K. True Density Analysis of a Freeze-Dried Amorphous Sugar Matrix. J Pharm Sci 2008; 97:2789-97. [DOI: 10.1002/jps.21202] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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29
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Fatouros DG, Mullertz A. In vitrolipid digestion models in design of drug delivery systems for enhancing oral bioavailability. Expert Opin Drug Metab Toxicol 2007; 4:65-76. [DOI: 10.1517/17425255.4.1.65] [Citation(s) in RCA: 75] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Abstract
This review covers recent developments in the area of particle engineering via spray drying. The last decade has seen a shift from empirical formulation efforts to an engineering approach based on a better understanding of particle formation in the spray drying process. Microparticles with nanoscale substructures can now be designed and their functionality has contributed significantly to stability and efficacy of the particulate dosage form. The review provides concepts and a theoretical framework for particle design calculations. It reviews experimental research into parameters that influence particle formation. A classification based on dimensionless numbers is presented that can be used to estimate how excipient properties in combination with process parameters influence the morphology of the engineered particles. A wide range of pharmaceutical application examples—low density particles, composite particles, microencapsulation, and glass stabilization—is discussed, with specific emphasis on the underlying particle formation mechanisms and design concepts.
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Gharsallaoui A, Roudaut G, Chambin O, Voilley A, Saurel R. Applications of spray-drying in microencapsulation of food ingredients: An overview. Food Res Int 2007. [DOI: 10.1016/j.foodres.2007.07.004] [Citation(s) in RCA: 1059] [Impact Index Per Article: 62.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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32
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Liu Y, Bhandari B, Zhou W. Study of glass transition and enthalpy relaxation of mixtures of amorphous sucrose and amorphous tapioca starch syrup solid by differential scanning calorimetry (DSC). J FOOD ENG 2007. [DOI: 10.1016/j.jfoodeng.2006.12.017] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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33
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Abstract
Milk constituents [caseins, whey proteins (WP), lactose, and anhydrous milk fat] are used widely in the manufacture of dehydrated dairy and dairy-like emulsions. When sodium caseinate- (NaCas) and WP-stabilized emulsions with an oil-to-protein ratio ranging from 0.25 to 5 are dehydrated, NaCas is a more effective encapsulant than WP because of its superior emulsifying properties and resistance to heat denaturation. Denaturation degree of WP during drying has been associated with increased powder surface fat and larger droplet size after reconstitution. Encapsulation of NaCas-stabilized emulsions improves in the presence of lactose; powder surface fat was reduced from 30 to <5% when lactose was added at a 1:1 ratio to NaCas in an emulsion containing 30% (wt/wt) oil. This has been related to the ability of lactose to form solid-like (or glassy) capsules during sudden dehydration. Encapsulation of WP-stabilized emulsions is not improved by addition of lactose, although there are conflicting reports in the literature. Storage stability of dehydrated dairy-like emulsions is strongly linked to lactose crystallization as release of encapsulated material occurs during storage at high relative humidities (e.g., 75%). The use of alternative carbohydrates as "matrix-forming" materials (such as maltodextrins or gum arabic) improves storage stability but compromises the emulsion droplet size after reconstitution. The composition of the powder surface has been recognized as a key parameter in dehydrated emulsion quality. It is the chemical composition of the powder surface that dictates the behavior of the bulk in terms of wettability, flowability, and stability. Analyses, using electron spectroscopy for chemical analysis of the surface of industrial milk powders and dehydrated emulsions that mimicked the composition of milk, showed that powder surface is covered mainly by fat, even when the fat content is very low (18 and 99% surface fat coverage for skim milk and whole milk powders, respectively). The functional properties of milk constituents during emulsion dehydration are far from being thoroughly understood; future research needs include a) the encapsulation properties of pure micellar casein; b) a deeper understanding of colloidal phenomena (such as changes in the oil-water and air-oil interfaces) that occur before, during, and after dehydration, which ultimately define emulsion stability after drying; and c) reconciliation of the current different views on powder surface composition.
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Affiliation(s)
- C Vega
- Faculty of Food Science and Technology, University College Cork, Cork, Ireland.
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Lappalainen M, Pitkänen I, Harjunen P. Quantification of low levels of amorphous content in sucrose by hyperDSC. Int J Pharm 2006; 307:150-5. [PMID: 16288841 DOI: 10.1016/j.ijpharm.2005.09.029] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2005] [Revised: 08/30/2005] [Accepted: 09/12/2005] [Indexed: 11/28/2022]
Abstract
A method was developed for the quantification of low levels of amorphous content in sucrose with hyperDSC. The method was based on the fact that the change of specific heat at the glass transition is linearly proportional to the amorphous content. It was found out that as annealing time increased, the glass transition temperature moved to a higher temperature and the change of specific heat increased. DeltaC(p) for annealed totally amorphous sucrose was 0.761+/-0.012 Jg(-1) degrees C(-1). Synthetic mixtures with various proportions of crystalline and amorphous sucrose were prepared. The following linear regression between DeltaC(p) and amorphous content was obtained: DeltaC(p)=0.0075x - 0.00484 (R=0.999). The limit of detection (LOD) and the limit of quantification (LOQ) values were 0.062 and 0.207%, respectively. The effect of grinding time on the amorphous content of crystalline sucrose was studied and a correlation between grinding time and amorphous content of sucrose was found. It was also found that the amorphous content could only attain a value of about 80-90% by grinding in the way used in this study.
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Affiliation(s)
- Minna Lappalainen
- University of Jyväskylä, Department of Chemistry, FIN-40014 University of Jyväskylä, Finland.
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35
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Vega C, Kim EHJ, Chen XD, Roos YH. Solid-state characterization of spray-dried ice cream mixes. Colloids Surf B Biointerfaces 2005; 45:66-75. [PMID: 16140513 DOI: 10.1016/j.colsurfb.2005.07.009] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2005] [Accepted: 07/18/2005] [Indexed: 11/17/2022]
Abstract
The main physicochemical properties of spray-dried ice cream mixes (i.e. surface composition, wettability, flowability and microstructure) were analyzed. Emulsions contained 19-44% milk fat on a dry basis and included mixes with no added emulsifier and/or sucrose. The time necessary for complete wetting of the powders correlated with the amount of surface free-fat measured by means of solvent extraction. Non-micellar casein (sodium caseinate) showed to be a better co-encapsulant than micellar casein (skim milk) as demonstrated by surface fat coverage measured by electron spectroscopy for chemical analysis (ESCA). Emulsifiers influenced the fat surface composition of the powders by reducing the amount of surface protein due to their lower interfacial tension. Surface fat caused an initial overestimation of the particle size of the powders due to fat-related caking. Powders showed no flow before and after surface fat extraction which was attributed to fat-related caking and very small particle size (<80 microm), respectively.
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Affiliation(s)
- Cesar Vega
- Faculty of Food Science and Technology, University College Cork, Cork, Ireland
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36
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Toorisaka E, Hashida M, Kamiya N, Ono H, Kokazu Y, Goto M. An enteric-coated dry emulsion formulation for oral insulin delivery. J Control Release 2005; 107:91-6. [PMID: 16039746 DOI: 10.1016/j.jconrel.2005.05.022] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2004] [Revised: 03/29/2005] [Accepted: 05/14/2005] [Indexed: 10/25/2022]
Abstract
A novel oral dosage formulation of insulin consisting of a surfactant, a vegetable oil, and a pH-responsive polymer has been developed. First, a solid-in-oil (S/O) suspension containing a surfactant-insulin complex was prepared. Solid-in-oil-in-water (S/O/W) emulsions were obtained by homogenizing the S/O suspension and the aqueous solution of hydroxypropylmethylcellulose phthalate (HPMCP). A microparticulate solid emulsion formulation was successfully prepared from the S/O/W emulsions by extruding them to an acidic aqueous solution, followed by lyophilization. The insulin release from the resultant dry emulsion responded to the change in external environment simulated by gastrointestinal conditions, suggesting that the new enteric-coated dry emulsion formulation is potentially applicable for the oral delivery of peptide and protein drugs.
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Affiliation(s)
- Eiichi Toorisaka
- Department of Applied Chemistry, Graduate School of Engineering, Oita University, 700 Dannoharu, Oita 870-1192, Japan
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Kawai K, Hagiwara T, Takai R, Suzuki T. Comparative Investigation by Two Analytical Approaches of Enthalpy Relaxation for Glassy Glucose, Sucrose, Maltose, and Trehalose. Pharm Res 2005; 22:490-5. [PMID: 15835755 DOI: 10.1007/s11095-004-1887-6] [Citation(s) in RCA: 74] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
PURPOSE In an effort to understand the stability of glassy sugars such as glucose, sucrose, maltose, and trehalose, the molecular mobility below the glass transition temperature (Tg) was investigated by an enthalpy relaxation measurement with differential scanning calorimetry (DSC). METHODS The glassy sample was aged over several days at (Tg - 10) K to (Tg - 30) K, before a DSC heating scan was taken. The relaxed enthalpy (deltaHrelax) was estimated from the endothermic peak area. The enthalpy relaxation time was analyzed from the time course of deltaHrelax using two different approaches; Kohlrausch-Williams-Watts (KWW) and extended Adam-Gibbs (exAG). RESULTS TauKWW, which is defined as the mean average enthalpy relaxation time in a distribution, and tau(eff)0 and tau(eff)infinity, which correspond to the enthalpy relaxation time of the initial minimum and final maximum cooperative rearrangement region, were estimated by KWW and exAG, respectively. And three activation energies for enthalpy relaxation were calculated from the Arrhenius plot. CONCLUSIONS Although these deltaEs originated from different theoretical backgrounds, almost the same trend was observed for a comparison of the values of the four sugars. The finding that the deltaEs of glassy trehalose were the largest among the four sugars may support the reason that glassy trehalose is an effective stabilizer.
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Affiliation(s)
- Kiyoshi Kawai
- Department of Food Science and Technology, Tokyo University of Marine Science and Technology, Minato-ku, Tokyo 108-8477, Japan
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38
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Hansen T, Holm P, Schultz K. Process characteristics and compaction of spray-dried emulsions containing a drug dissolved in lipid. Int J Pharm 2005; 287:55-66. [PMID: 15541912 DOI: 10.1016/j.ijpharm.2004.08.014] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2004] [Revised: 07/22/2004] [Accepted: 08/24/2004] [Indexed: 10/26/2022]
Abstract
The objective of the present study is to prepare directly compressible powders, containing a poorly water-soluble drug dissolved in medium-chain triglycerides (MCT), by spray drying o/w-emulsions in a pilot plant spray dryer. In addition to the lipid phase, the emulsions contained a water-soluble carrier (a sugar), a water-insoluble carrier (magnesium alumino metasilicate) and a combined emulsifier and film-forming agent (gelatine). A factorial design was used to investigate the effect of formulation variables on the spray drying process and powder properties. The factors varied were soluble carrier type (trehalose or mannitol), insoluble carrier particle size distribution (granular or fine powder) and amount of lipid phase in the emulsion (low or high). Compressibility and compactibility of the spray-dried emulsions were mainly affected by the content of lipid in the powders and decreased on increasing the amount of lipid. Increasing the particle size of the insoluble carrier decreased spray drying process yield and lipid encapsulation efficiency whereas compactibility and handling properties were improved. Incorporation of a soluble carrier becoming amorphous on spray drying resulted in tablets with an increased mechanical strength compared to powders containing a crystalline soluble carrier.
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Affiliation(s)
- Tue Hansen
- Pharmaceutical Development, H. Lundbeck A/S, Ottiliavej 9, DK-2500 Valby, Denmark.
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39
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Yokoi Y, Yonemochi E, Terada K. Changes in surface properties by granulation and physicochemical stability of granulated amorphous cefditoren pivoxil with additives. Int J Pharm 2004; 280:67-75. [PMID: 15265548 DOI: 10.1016/j.ijpharm.2004.05.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2004] [Revised: 04/17/2004] [Accepted: 05/02/2004] [Indexed: 11/19/2022]
Abstract
The evaluation of the physicochemical stability of granules of amorphous cefditoren pivoxil (CDTR-PI), alone or with polymers, demonstrated that granulated amorphous CDTR-PI with hydroxypropyl methylcellulose was the most stable. We measured glass transition temperature by differential scanning calorimetry (DSC). The molecular mobility of the whole granules did not change, and it was not consistent with the results of the evaluation of physicochemical stability. Peak shifts were observed in IR spectra of amorphous CDTR-PI with polymers after granulation, and the shifts were similar to those observed for spray-dried samples. Furthermore, the shifts were not observed after the granules were ground. Acid-base parameters, which were also measured by inverse gas chromatography (IGC), changed after granulation. These results suggested that on the surface of the granules, CDTR-PI and the polymers would be mixed monomolecularly, as in the spray-dried samples. The changes in the molecular state of a drug when mixed monomolecularly with a polymer on the surface of granules were successfully confirmed by IGC and IR.
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Affiliation(s)
- Yukiko Yokoi
- Chemistry, Manufacturing & Control Research Laboratories, Pharmaceutical Development Department, Meiji Seika Kaisha, Ltd., 760 Morooka-cho, Kohoku-ku, Yokohama 222-8567, Japan.
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Rogers TL, Johnston KP, Williams RO. Physical stability of micronized powders produced by spray-freezing into liquid (SFL) to enhance the dissolution of an insoluble drug. Pharm Dev Technol 2003; 8:187-97. [PMID: 12760569 DOI: 10.1081/pdt-120018489] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
PURPOSE The objective of this study was to investigate the physical stability of micronized powders produced by the spray-freezing into liquid (SFL) particle engineeringtechnology. MATERIALS AND METHODS Danazol was formulated with polyvinyl alcohol (MW 22,000), poloxamer 407, and polyvinylpyrrolidone K-15 to form a cosolvent solution that was SFL processed. The dried micronized SFL powders were sealed in glass vials with desiccant and exposed to 25 degrees C/60% RH for 3 and 6 mo, 40 degrees C/75% RH for 1, 2, 3, and 6 mo, and conditions where the temperature was cycled between -5 and +40 degrees C (6 cycles/24 hr) with constant 75% RH for 1, 2, 3 and 4 wk. The samples were characterized by using Karl-Fisher titration, differential scanning calorimetry, x-ray diffraction, specific surface area, scanning electron microscopy, and dissolution testing. RESULTS Micronized SFL powders consisting of porous aggregates with small-particle domains were characterized as having high surface areas and consisted of amorphous danazol embedded within a hydrophilic excipient matrix. Karl-Fischer titration revealed no moisture absorption over the duration of the stability studies. Differential scanning calorimetry studies demonstrated high degrees of molecular interactions between danazol, PVA, poloxamer, and PVP. Scanning electron microscopy studies confirmed these interactions, especially those between danazol and poloxamer. These interactions facilitated API dissolution in the aqueous media. Powder surface area remained constant during storage at the various stability conditions, and danazol recrystallization did not occur during the entirety of the stability studies. Micronized SFL powders containing danazol dissolved rapidly and completely within 5 min in aqueous media. No differences were observed in the enhanced dissolution profiles of danazol after exposure to the storage conditions investigated. Physically stable micronized powders produced by the SFL particle engineering technology were produced for the purpose of enhancing the dissolution of an insoluble drug. CONCLUSIONS The potential of the SFL particle-engineering technology as a micronization technique for enhancing the dissolution of hydrophobic drugs was demonstrated in this study. The robustness of the micronized SFL powders to withstand stressed storage conditions was shown.
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Affiliation(s)
- True L Rogers
- College of Pharmacy, University of Texas at Austin, Austin, Texas 78712-1074, USA
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