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Gökten M, Öcal O, Sezer C, Zırh S, Muftuoglu S, Öcal E, Bilginer B, Arat A. In vivo study of the utility of selective intra-arterial injection of thiopental for neuroprotection in reversible cerebral ischemia. Acta Radiol 2024; 65:115-122. [PMID: 37872692 DOI: 10.1177/02841851231206503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2023]
Abstract
BACKGROUND Neuroprotective agents are needed to reduce cerebral damage during surgical or neurointerventional procedures including stroke patients. PURPOSE To evaluate if thiopental can be used as a neuroprotective agent when injected intra-arterially in a transient ischemia model. MATERIAL AND METHODS In total, 24 rabbits were studied as four groups of six animals. Group 1 served as the control group. In group 2, transient ischemia was obtained by intracarotid administration of degradable starch microspheres (DSM). Group 3 was administered thiopental intra-arterially via the carotid artery. Group 4 (experimental group) received both thiopental and DSM intra-arterially. DSM and thiopental were administered through a microcatheter placed into the common carotid artery via the central ear artery access. After sacrifice, apoptotic cells in the cerebral tissues of the animals were evaluated in H&E and TUNEL stained slides. RESULTS There was a significant increase in the number of apoptotic glial or neuronal cells in group 2 compared to the control group and group 3. The mean number of both the apoptotic neuronal cells (6.8 ± 2.1 vs. 2.5 ± 1.3, P < 0.001) and the apoptotic glial cells (9.4 ± 3.1 vs. 4.6 ± 1.6, P < 0.001) were higher in group 2 compared to group 4. In addition, a higher level of neurological improvement was observed in group 4 compared to group 2 based on neurological assessment score. CONCLUSION The intra-arterial administration of thiopental has a protective effect on both glial and neuronal cells during temporary cerebral ischemia in low doses.
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Affiliation(s)
- Murat Gökten
- Department of Neurosurgery, Corlu State Hospital, Tekirdag, Turkey
| | - Osman Öcal
- Department of Radiology, Hacettepe University, Ankara, Turkey
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | - Can Sezer
- Department of Neurosurgery, Seyhan State Hospital, Adana, Turkey
| | - Selim Zırh
- Department of Histology, Binali Yıldırım University, Erzincan, Turkey
| | - Sevda Muftuoglu
- Department of Histology, Hacettepe University, Ankara, Turkey
| | - Elif Öcal
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | - Burcak Bilginer
- Department of Neurosurgery, Hacettepe University, Ankara, Turkey
| | - Anıl Arat
- Department of Radiology, Hacettepe University, Ankara, Turkey
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Argatov I, Krcic N, Kocherbitov V. Sedimentation of a starch microsphere: What is usually missed and why? Heliyon 2023; 9:e20257. [PMID: 37810817 PMCID: PMC10550625 DOI: 10.1016/j.heliyon.2023.e20257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 09/08/2023] [Accepted: 09/17/2023] [Indexed: 10/10/2023] Open
Abstract
Gravimetric sedimentation is known as a relatively simple method of determining density of spherical particles. When the method is applied to water-swollen starch microparticles of about submillimeter sizes, it becomes evident that a careful selection of the experimental setup parameters is needed for producing accurate testing results. The main reason for this is that the mean particle density is very close to the density of water, and therefore, a dynamic model accounting for the so-called Bassett history force should be employed for describing the unsteady accelerating particle settling. A main novelty of this study consists in deriving a priori estimates for the settling time and distance.
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Affiliation(s)
- Ivan Argatov
- Institut für Mechanik, Technische Universität Berlin, 10623 Berlin, Germany
| | - Nedim Krcic
- Magle Chemoswed, Agneslundsvägen 27, SE-212 15, Malmö, Sweden
| | - Vitaly Kocherbitov
- Faculty of Health and Society, Malmö University, SE-205 06 Malmö, Sweden
- Biofilms – Research Center for Biointerfaces, Malmö University, SE-205 06 Malmö, Sweden
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Zhou J, Li X, Hou T, Zhang X, Yang B. Biodegradable, biomimetic, and nanonet-engineered membranes enable high-flux and highly-efficient oil/water separation. JOURNAL OF HAZARDOUS MATERIALS 2022; 434:128858. [PMID: 35405607 DOI: 10.1016/j.jhazmat.2022.128858] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2022] [Revised: 03/24/2022] [Accepted: 04/01/2022] [Indexed: 06/14/2023]
Abstract
Porous membranes with fascinating super-wettable surface and tunable porous architecture for oil-water separation have been developed rapidly, however, the serious secondary marine pollution caused by the non-degradable defectiveness of membranes themselves is still a thorny problem. Herein, we create an eco-friendly membrane with biomimetic cobweb-like nanostructure via assembling two-dimensional bacterial cellulose nanonets on the starch nanofibrous membrane on a large scale. The obtained novel composite membranes exhibit integrated properties of sub-micron pore size, ultrahigh porosity, superhydrophilicity, and underwater superoleophobicity, stemming from the synergistic effect of the hydrated nanonet-skin-layer and porous starch matrix. By virtue of the narrow-distributed sub-micron pores, ultrahigh porosity, and ultrathin thickness, the resulting membrane shows outstanding performance of excellent separation efficiency (up to 99.996%), high percolation flux (maximum of 15968 L m-2 h-1), well surpassing the conventional microfiltration membranes. More significantly, with the advantage of biodegradability and anti-oil-fouling property, the membrane could serve as the robust platform for long-term wastewater remediation.
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Affiliation(s)
- Jing Zhou
- College of Textile Science and Engineering (International Institute of Silk), Zhejiang Sci-Tech University, 310018, China
| | - Xianglong Li
- College of Textile Science and Engineering (International Institute of Silk), Zhejiang Sci-Tech University, 310018, China
| | - Teng Hou
- College of Textile Science and Engineering (International Institute of Silk), Zhejiang Sci-Tech University, 310018, China
| | - Xianggui Zhang
- College of Textile Science and Engineering (International Institute of Silk), Zhejiang Sci-Tech University, 310018, China
| | - Bin Yang
- College of Textile Science and Engineering (International Institute of Silk), Zhejiang Sci-Tech University, 310018, China.
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Rajan PK, Dunna NR, Venkatabalasubramanian S. A comprehensive overview on the anti-inflammatory, antitumor, and ferroptosis functions of bromelain: an emerging cysteine protease. Expert Opin Biol Ther 2022; 22:615-625. [PMID: 35176951 DOI: 10.1080/14712598.2022.2042250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
INTRODUCTION Bromelain belongs to the cysteine protease endopeptidase class of enzymes isolated from the stem and fruit tissue component of Ananas comosus. The commercial and translational therapeutic potential of bromelain is ever increasing due to its augmented stability, easier purification, and salubrious pan-cancer effects. AREAS COVERED This paper presents the current state of knowledge about the isolation methods of bromelain, its safety, efficacy and tolerability. In addition, bromelains<apos;> role in eliciting pharmacological effects and its healing ability to mitigate cancer side effects based on accumulated in vitro, in vivo, and clinical evidence is relatively considerable. EXPERT OPINION Identification of molecular targets and crucial signalling pathways that bromelain regulates suggest it genuinely prospects for combating cancer and mitigation of chemotherapy or radiotherapy mediated side effects. Further research on the development of bromelain-entrapped drug delivery systems for augmented enzyme stability, processing ability and translational potential against cancer can be beneficial.
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Affiliation(s)
- Prajitha K Rajan
- Department of Genetic Engineering, College of Engineering and Technology, SRM Institute of Science and Technology, SRM Nagar, Kattankulathur, 603203, Kanchipuram, Chennai, India
| | - Nageswara Rao Dunna
- Cancer Genomics Laboratory, Department of Biotechnology, School of Chemical and Biotechnology, SASTRA - Deemed University, Thanjavur, 613401, India
| | - Sivaramakrishnan Venkatabalasubramanian
- Department of Genetic Engineering, College of Engineering and Technology, SRM Institute of Science and Technology, SRM Nagar, Kattankulathur, 603203, Kanchipuram, Chennai, India
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Trombino S, Curcio F, Cassano R. Nano- and Micro-Technologies Applied to Food Nutritional Ingredients. Curr Drug Deliv 2020; 18:670-678. [PMID: 33243120 DOI: 10.2174/1567201817999201125205025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Revised: 09/25/2020] [Accepted: 10/06/2020] [Indexed: 11/22/2022]
Abstract
New technologies are currently investigated to improve the quality of foods by enhancing their nutritional value, freshness, safety, and shelf-life, as well as by improving their tastes, flavors and textures. Moreover, new technological approaches are being explored, in this field, to address nutritional and metabolism-related diseases (i.e., obesity, diabetes, cardiovascular diseases), to improve targeted nutrition, in particular for specific lifestyles and elderly population, and to maintain the sustainability of food production. A number of new processes and materials, derived from micro- and nano-technology, have been used to provide answers to many of these needs and offer the possibility to control and manipulate properties of foods and their ingredients at the molecular level. The present review focuses on the importance of micro- and nano-technology in the food and nutritional sector and, in particular, provides an overview of the micro- and nano-materials used for the administration of nutritional constituents essential to maintain and improve health, as well as to prevent the development and complications of diseases.
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Affiliation(s)
- Sonia Trombino
- Department of Pharmacy and Health and Nutrition Sciences, University of Calabria, 87036 Arcavacata di Rende, Cosenza, Italy
| | - Federica Curcio
- Department of Pharmacy and Health and Nutrition Sciences, University of Calabria, 87036 Arcavacata di Rende, Cosenza, Italy
| | - Roberta Cassano
- Department of Pharmacy and Health and Nutrition Sciences, University of Calabria, 87036 Arcavacata di Rende, Cosenza, Italy
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Berko YA, Akala EO. Computer Optimization of Stealth Biodegradable Polymeric Dual-loaded Nanoparticles for Cancer Therapy Using Central Composite Face-centered Design. Pharm Nanotechnol 2020; 8:108-132. [PMID: 32091350 DOI: 10.2174/2211738508666200224110410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2019] [Revised: 01/03/2020] [Accepted: 02/04/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND Combination chemotherapy capable of overcoming cancer drug resistance can be facilitated by nanotechnology. OBJECTIVE Synthesis, characterization, statistical experimental design, analysis and optimization of stealth pH-sensitive polymeric nanoparticles suitable as a platform for simultaneous delivery of paclitaxel and 17-AAG in breast cancer therapy were investigated. METHODS An acetal crosslinker and a poly(ɛ)caprolactone macromonomer were synthesized and characterized. The statistical experimental design used was the response surface method (RSM). We used the central composite face-centered design (CCF) in three independent factors and seventeen runs. Nanoparticles were fabricated by dispersion polymerization techniques. Response variables evaluated were: particle size, drug loading, encapsulation efficiency, and in vitro availability. RESULTS Scanning electron micrographs showed the formation of spherical nanoparticles. Computer software was used for the analysis of variance with a 95% confidence level and Q2 (goodness of prediction) to select an appropriate model for each of the response variables. Each term in each of the models was tested for the significance of the regression coefficients. The computer software optimizer was used for optimization to select factor combination to minimize particle size, time (h) for maximum release of paclitaxel and 17-AAG, to maximize paclitaxel and 17-AAG loading efficiency and to maximize paclitaxel and 17-AAG encapsulation efficiency. CONCLUSION The optimization was successful, as shown by the validation data which lie within the confidence intervals of predicted values of the response variables. The selected factor combination is suitable for the in vivo evaluation of the nanoparticles loaded with paclitaxel and 17-AAG.
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Affiliation(s)
- Yvonne A Berko
- Center for Drug Research and Development, Department of Pharmaceutical Sciences, College of Pharmacy, Howard University, 2300 4th Street, NW, Washington, DC 20059, United States
| | - Emmanuel O Akala
- Center for Drug Research and Development, Department of Pharmaceutical Sciences, College of Pharmacy, Howard University, 2300 4th Street, NW, Washington, DC 20059, United States
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Shen Y, Zhang N, Xu Y, Huang J, Yuan M, Wu D, Shu X. Physicochemical properties of hydroxypropylated and cross-linked rice starches differential in amylose content. Int J Biol Macromol 2019; 128:775-781. [DOI: 10.1016/j.ijbiomac.2019.01.194] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Revised: 12/20/2018] [Accepted: 01/28/2019] [Indexed: 11/30/2022]
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Mahmoud AA, Elkasabgy NA, Abdelkhalek AA. Design and characterization of emulsified spray dried alginate microparticles as a carrier for the dually acting drug roflumilast. Eur J Pharm Sci 2018; 122:64-76. [PMID: 29928985 DOI: 10.1016/j.ejps.2018.06.015] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Revised: 05/19/2018] [Accepted: 06/15/2018] [Indexed: 12/22/2022]
Abstract
Roflumilast is a selective inhibitor of phosphodiesterase-4 isoenzyme in lung cells. Having psychiatric adverse reactions when administered orally affects negatively the patients' adherence to the drug. This work aimed to prepare emulsified spray dried alginate microparticles for the pulmonary delivery of roflumilast. Sodium alginate was used as microparticle-forming material, isopropyl myristate as an oil, Tween®80 as surfactant and calcium beta-glycerophosphate as cross-linking agent to enhance the mechanical properties of the particles. The prepared particles were evaluated for their encapsulation efficiency, particle size and in-vitro drug release. From the studied carriers, beta-cyclodextrin (CD) was the best regarding giving formulation with smaller particle size and more sustained drug release. The inhalation profile of CD-based microparticles was investigated using Anderson cascade impactor. The aerosolization profile of CD-based microparticles suggested their efficiency to deliver the drug deep in the lung. The CD-based microparticles possessed more inhibitory effects on the viability of A549 cells and on the pro-inflammatory cytokines (TNF-α, IL-6 and IL-10) compared to the pure drug. Hence, CD-based microparticles could regulate the tumorigenesis besides tumor-associated inflammation. Finally, CD-based microparticles showed more sustained bronchodilatation properties in healthy human volunteers when compared to Ventolin®HFA. CD-based microparticles proved to be a promising carrier for inhaled roflumilast in human.
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Affiliation(s)
- Azza A Mahmoud
- Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmaceutical Sciences and Pharmaceutical Industries, Future University in Egypt, Cairo, Egypt; Department of Pharmaceutical Technology, Pharmaceutical and Drug Industries Research Division, National Research Center, Dokki, Cairo, Egypt
| | - Nermeen A Elkasabgy
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Cairo University, Kasr El-Aini Street, Cairo, Egypt.
| | - Abdelfattah A Abdelkhalek
- Department of Microbiology of Supplementry General Science, Faculty of Oral & Dental Medicine, Future University in Egypt, Cairo, Egypt
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Dehghan Baniani D, Bagheri R, Solouk A. Preparation and characterization of a composite biomaterial including starch micro/nano particles loaded chitosan gel. Carbohydr Polym 2017; 174:633-645. [DOI: 10.1016/j.carbpol.2017.06.095] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Revised: 05/17/2017] [Accepted: 06/22/2017] [Indexed: 12/20/2022]
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Torres O, Murray B, Sarkar A. Emulsion microgel particles: Novel encapsulation strategy for lipophilic molecules. Trends Food Sci Technol 2016. [DOI: 10.1016/j.tifs.2016.07.006] [Citation(s) in RCA: 91] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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11
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Synthesis, Optimization, Property, Characterization, and Application of Dialdehyde Cross-Linking Guar Gum. INT J POLYM SCI 2016. [DOI: 10.1155/2016/6482461] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Dialdehyde cross-linking guar gum (DCLGG), as a novel material, was synthesized using phosphorus oxychloride as a cross-linking reagent, sodium periodate as an oxidant, and ethanol as a solvent through keeping the original particle form of guar gum. The process parameters such as the reaction temperature, reaction time, pH, amount of sodium periodate, and amount of ethanol were optimized by the response surface methodology in order to obtain the regression model of the oxidization. The covalent binding of L-asparagine onto the surfaces of DCLGG was further investigated. The results showed that the best technological conditions for preparing DCLGG were as follows: reaction temperature = 40°C, reaction time = 3.0 h, pH = 4.0, and amount of ethanol = 74.5%. The swelling power of DCLGG was intermediate between cross-linking guar gum and dialdehyde guar gum. The cross-linking and dialdehyde oxidization reduced the viscosity of GG. The cross-liking reduced the melting enthalpy of GG. However, the oxidization increased melting enthalpy of ACLGG. The thermal stability of GG was increased by cross-linking or oxidization. The variation of the onset decomposition temperature and end decomposition temperature of GG was not consistent with thermal stability of GG. L-asparagine could be chemically bound well by DCLGG through forming Schiff base under the weak acidity. The maximum adsorption capacity of L-asparagine on DCLGG with aldehyde content of 56.2% reached 21.9 mg/g.
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Lemieux M, Gosselin P, Mateescu MA. Carboxymethyl starch mucoadhesive microspheres as gastroretentive dosage form. Int J Pharm 2015; 496:497-508. [DOI: 10.1016/j.ijpharm.2015.10.027] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2015] [Revised: 09/23/2015] [Accepted: 10/05/2015] [Indexed: 11/17/2022]
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Tapia-Hernández JA, Torres-Chávez PI, Ramírez-Wong B, Rascón-Chu A, Plascencia-Jatomea M, Barreras-Urbina CG, Rangel-Vázquez NA, Rodríguez-Félix F. Micro- and nanoparticles by electrospray: advances and applications in foods. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2015; 63:4699-707. [PMID: 25938374 DOI: 10.1021/acs.jafc.5b01403] [Citation(s) in RCA: 116] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Micro- and nanotechnology are tools being used strongly in the area of food technology. The electrospray technique is booming because of its importance in developing micro- and nanoparticles containing an active ingredient as bioactive compounds, enhancing molecules of flavors, odors, and packaging coatings, and developing polymers that are obtained from food (proteins, carbohydrates), as chitosan, alginate, gelatin, agar, starch, or gluten. The electrospray technique compared to conventional techniques such as nanoprecipitation, emulsion-diffusion, double-emulsification, and layer by layer provides greater advantages to develop micro- and nanoparticles because it is simple, low cost, uses a low amount of solvents, and products are obtained in one step. This technique could also be applied in the agrifood sector for the preparation of controlled and/or prolonged release systems of fertilizer or agrochemicals, for which more research must be conducted.
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Affiliation(s)
- José A Tapia-Hernández
- †Department of Food Research and Graduate Program (DIPA), University of Sonora, Hermosillo, Sonora, Mexico
| | - Patricia I Torres-Chávez
- †Department of Food Research and Graduate Program (DIPA), University of Sonora, Hermosillo, Sonora, Mexico
| | - Benjamín Ramírez-Wong
- †Department of Food Research and Graduate Program (DIPA), University of Sonora, Hermosillo, Sonora, Mexico
| | - Agustín Rascón-Chu
- ‡Laboratory of Biopolymers, Research Center for Food and Development, CIAD, A. C., 83000 Hermosillo, Sonora, Mexico
| | - Maribel Plascencia-Jatomea
- †Department of Food Research and Graduate Program (DIPA), University of Sonora, Hermosillo, Sonora, Mexico
| | - Carlos G Barreras-Urbina
- †Department of Food Research and Graduate Program (DIPA), University of Sonora, Hermosillo, Sonora, Mexico
| | - Norma A Rangel-Vázquez
- §Department of Metalmechanical, Aguascalientes Institute of Technological, Aguascalientes, Aguascalientes, Mexico
| | - Francisco Rodríguez-Félix
- †Department of Food Research and Graduate Program (DIPA), University of Sonora, Hermosillo, Sonora, Mexico
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García-González C, Jin M, Gerth J, Alvarez-Lorenzo C, Smirnova I. Polysaccharide-based aerogel microspheres for oral drug delivery. Carbohydr Polym 2015; 117:797-806. [DOI: 10.1016/j.carbpol.2014.10.045] [Citation(s) in RCA: 178] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2014] [Revised: 10/15/2014] [Accepted: 10/16/2014] [Indexed: 10/24/2022]
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Gao F, Li D, Bi CH, Mao ZH, Adhikari B. Preparation and characterization of starch crosslinked with sodium trimetaphosphate and hydrolyzed by enzymes. Carbohydr Polym 2014; 103:310-8. [DOI: 10.1016/j.carbpol.2013.12.028] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2013] [Revised: 11/05/2013] [Accepted: 12/10/2013] [Indexed: 10/25/2022]
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Shi M, Gu F, Wu J, Yu S, Gao Q. Preparation, physicochemical properties, and in vitro digestibility of cross-linked resistant starch from pea starch. STARCH-STARKE 2013. [DOI: 10.1002/star.201300008] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Miaomiao Shi
- Carbohydrate Laboratory, College of Light Industry and Food Sciences; South China University of Technology; Guangzhou P. R. China
| | - Feng Gu
- Carbohydrate Laboratory, College of Light Industry and Food Sciences; South China University of Technology; Guangzhou P. R. China
| | - Junchao Wu
- Carbohydrate Laboratory, College of Light Industry and Food Sciences; South China University of Technology; Guangzhou P. R. China
| | - Shujuan Yu
- Carbohydrate Laboratory, College of Light Industry and Food Sciences; South China University of Technology; Guangzhou P. R. China
| | - Qunyu Gao
- Carbohydrate Laboratory, College of Light Industry and Food Sciences; South China University of Technology; Guangzhou P. R. China
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Kenari HS, Alinejad Z, Imani M, Nodehi A. Effective parameters in determining cross-linked dextran microsphere characteristics: screening by Plackett–Burman design-of-experiments. J Microencapsul 2013; 30:599-611. [DOI: 10.3109/02652048.2013.770096] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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18
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Singh V, Kumari K. Some Physicochemical Measurements of Chitosan/Starch Polymers in Acetic Acid-Water Mixtures. ACTA ACUST UNITED AC 2012. [DOI: 10.1002/masy.201251011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Kenari HS, Imani M, Nodehi A. Full factorial design-of-experiments for preparation of crosslinked dextran microspheres. J Appl Polym Sci 2012. [DOI: 10.1002/app.37983] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Li BZ, Wang LJ, Li D, Adhikari B, Mao ZH. Preparation and characterization of crosslinked starch microspheres using a two-stage water-in-water emulsion method. Carbohydr Polym 2012. [DOI: 10.1016/j.carbpol.2012.01.043] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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21
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Freire C, Podczeck F, Veiga F, Sousa J. Influence of the coating formulation on enzymatic digestibility and drug release from 5-aminosalicylic acid pellets coated with mixtures of high-amylose starch and Surelease® intended for colon-specific drug delivery. Drug Dev Ind Pharm 2010; 36:161-72. [DOI: 10.3109/03639040903124617] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Momeni A, Mohammadi MH. Respiratory delivery of theophylline by size-targeted starch microspheres for treatment of asthma. J Microencapsul 2010; 26:701-10. [PMID: 19888879 DOI: 10.3109/02652040802685043] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Asthma is considered as the most relevant pulmonary disease which is located at bronchial airways and oral theophylline is one of the most prescribed drugs for its treatment as it is inexpensive. However, the frequency of theophylline side-effects has recently reduced its usage. Inhaled theophylline has not been successful either, mostly due to the lack of retention in the airways and irritation. In this study, theophylline was encapsulated in mucoadhesive starch microspheres using an inverse emulsion method. Glutaraldehyde was applied as the cross-linker for some of starch-derived microspheres. Cross-linking reaction was studied by means of the FTIR. A central composite face (CFC) design was used to optimize manufacturing conditions in order to obtain the highest drug entrapment yield and ideal aerodynamic diameter range of 5-11 microm at which bronchial deposition is maximum. Optimized microspheres were successfully reproduced using the model provided by CFC design and their experimental aerodynamic diameter and drug entrapment yield were in good correlation with predicted values. Drug release of optimized microspheres was measured in phosphate buffer solution. Both cross-linked and uncross-linked microspheres showed biphasic Fickian type drug release (Higuchi Model). These new formulations may recover the role of this valuable drug in asthma management.
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Affiliation(s)
- Arash Momeni
- Biomedical Engineering Department, Amirkabir University of Technology (AUT), Tehran 15875-4413, Iran.
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Physical properties and loading capacity of starch-based microparticles crosslinked with trisodium trimetaphosphate. J FOOD ENG 2009. [DOI: 10.1016/j.jfoodeng.2008.10.008] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Li BZ, Wang LJ, Li D, Bhandari B, Li SJ, Lan Y, Chen XD, Mao ZH. Fabrication of starch-based microparticles by an emulsification-crosslinking method. J FOOD ENG 2009. [DOI: 10.1016/j.jfoodeng.2008.08.011] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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