theophylline has been researched along with ethyl cellulose in 54 studies
| Timeframe | Studies, this research(%) | All Research% |
|---|---|---|
| pre-1990 | 4 (7.41) | 18.7374 |
| 1990's | 8 (14.81) | 18.2507 |
| 2000's | 24 (44.44) | 29.6817 |
| 2010's | 18 (33.33) | 24.3611 |
| 2020's | 0 (0.00) | 2.80 |
| Authors | Studies |
|---|---|
| Goto, S; Uchida, T; Yasutake, T | 1 |
| Moldenhauer, MG; Nairn, JG | 1 |
| Lin, SY; Yang, JC | 1 |
| Benita, S; Donbrow, M | 3 |
| Goto, S; Kim, NS; Kitagawa, K; Lee, CK; Uchida, T | 1 |
| Kawai, A; Takada, K; Yasui, H; Yoshikawa, H; Yoshikawa, Y | 1 |
| Claudius, JS; Howard, DR; Howard, MA; Neau, SH | 1 |
| Frohoff-Hülsmann, MA; Lippold, BC; Schmitz, A | 1 |
| Gunder, W; Lippold, BC; Lippold, BH | 1 |
| Bodmeier, R; Lecomte, F; Siepmann, J | 1 |
| Amighi, K; Devleeschouwer, MJ; Moës, AJ; Semdé, R | 1 |
| Deák, D; Erós, I; Kása, P; Muskó, Z; Pintye-Hódi, K; Szabó-Révész, P | 1 |
| Bodmeier, R; Wesseling, M | 1 |
| Kulvanich, P; Leesawat, P; Patomchaiviwat, V | 1 |
| Kojima, M; Nakagami, H | 1 |
| Li, MJ; Lin, KH; Lin, SY | 1 |
| Ikegami, K; Kobayashi, M; Osawa, T; Tagawa, K | 1 |
| Chambin, O; Champion, D; Debray, C; Le Meste, M; Pourcelot, Y; Rochat-Gonthier, MH | 1 |
| Kondo, S; Kosaki, M; Kuzuya, M; Sasai, Y | 1 |
| Chaumeil, JC; Douki, W; Noureddine, N; Sfar, S | 1 |
| Bodmeier, R; MacRae, RJ; Siepmann, F; Siepmann, J; Walther, M | 1 |
| Chikazawa, M; Fuji, M; Ohta, KM; Takei, T | 1 |
| Chambin, O; Pourcelot, Y; Rochat-Gonthier, MH; Rota, A | 1 |
| Zheng, L; Zhu, Y | 1 |
| Chanda, E; Datta, BK; Haider, SS; Quadir, MA; Reza, MD | 1 |
| Dashevsky, A; Mohamad, A | 1 |
| Carlin, B; Leclercq, B; Siepmann, F; Siepmann, J; Wahle, C | 1 |
| Carlin, B; Leclercq, B; Muschert, S; Siepmann, F; Siepmann, J | 3 |
| Basit, AW; McConnell, EL; Short, MD | 2 |
| Augsburger, LL; Cantor, SL; Hoag, SW | 2 |
| Emeje, MO; Kunle, OO; Ofoefule, SI | 1 |
| Ahmed, AR; Bodmeier, RA; Dashevsky, A; Irfan, M; Kolter, K; Mota, J | 1 |
| Amin, AF; Patel, MM | 1 |
| Cantor, SL; Ellison, CD; Hoag, SW; Khan, MA; Lyon, RC | 1 |
| Leclercq, B; Muschert, S; Siepmann, F; Siepmann, J | 1 |
| Emeje, M; Isimi, Y; John-Africa, L; Kunle, O; Ofoefule, S | 1 |
| Chokshi, R; Leclercq, B; Muschert, S; Rosiaux, Y; Siepmann, F; Siepmann, J | 1 |
| Chokshi, R; Leclercq, B; Muschert, S; Rosiaux, Y; Siepmann, F; Siepmann, J; Velghe, C | 2 |
| Afrasiabi Garekani, H; Sadeghi, F; Sedighi, S | 1 |
| Ford, JL; Levina, M; Mohamed, FA; Rajabi-Siahboomi, AR; Roberts, M; Seton, L | 1 |
| Afrasiabi Garekani, H; Faghihnia Torshizi, M; Sadeghi, F | 1 |
| Alhnan, MA; Czarnocka, JK | 1 |
| Ee Li, C; Sheshala, R; Srikanth Meka, V | 1 |
| Ahmadi, B; Garekani, HA; Sadeghi, F | 1 |
| Ahmed, H; Capomacchia, A; Elder, D; Garner, S; Israel, B; Thakare, M | 1 |
| Barba, AA; Caccavo, D; Cafaro, MM; Kazlauske, J; Lamberti, G; Larsson, A; Marucci, M | 1 |
| Ando, C; Kondo, K; Niwa, T | 1 |
1 trial(s) available for theophylline and ethyl cellulose
| Article | Year |
|---|---|
Microbiota-triggered colonic delivery: robustness of the polysaccharide approach in the fed state in man.
Topics: Administration, Oral; Adult; Amylose; Biological Availability; Capsules; Cecum; Cellulose; Colon; Cross-Over Studies; Drug Delivery Systems; Fasting; Feces; Gastrointestinal Transit; Gelatin; Humans; Male; Plasma; Polysaccharides; Theophylline; Time Factors | 2009 |
53 other study(ies) available for theophylline and ethyl cellulose
| Article | Year |
|---|---|
Utility of mixture of commercially available polymers as constituents of sustained-release microcapsules containing cefadroxil or theophylline.
Topics: Administration, Oral; Animals; Cefadroxil; Cellulose; Delayed-Action Preparations; Dogs; Drug Compounding; Intestinal Absorption; Male; Methylcellulose; Theophylline | 1992 |
Formulation parameters affecting the preparation and properties of microencapsulated ion-exchange resins containing theophylline.
Topics: Capsules; Cellulose; Delayed-Action Preparations; Diffusion; Drug Compounding; Ion Exchange Resins; Microscopy, Electron, Scanning; Particle Size; Theophylline | 1990 |
Bioavailability studies of theophylline ethylcellulose microcapsules prepared by using ethylene-vinyl acetate copolymer as a coacervation-inducing agent.
Topics: Animals; Biological Availability; Capsules; Cellulose; Delayed-Action Preparations; Intestinal Absorption; Kinetics; Male; Polyvinyls; Rats; Rats, Inbred Strains; Solubility; Theophylline | 1987 |
Release kinetics of sparingly soluble drugs from ethyl cellulose-walled microcapsules: theophylline microcapsules.
Topics: Capsules; Cellulose; Delayed-Action Preparations; Diffusion; Kinetics; Particle Size; Permeability; Solubility; Theophylline | 1982 |
Release kinetics of sparingly soluble drugs from ethyl cellulose-walled microcapsules: salicylamide microcapsules.
Topics: Capsules; Cellulose; Hydrogen-Ion Concentration; Kinetics; Particle Size; Permeability; Salicylamides; Solubility; Theophylline; Time Factors | 1982 |
Effect of polyisobutylene on ethyl cellulose-walled microcapsules: wall structure and thickness of salicylamide and theophylline microcapsules.
Topics: Capsules; Cellulose; Chemistry, Pharmaceutical; Microscopy, Electron, Scanning; Particle Size; Polyenes; Polymers; Salicylamides; Theophylline | 1982 |
Transdermal delivery of theophylline using an ethanol/panasate 800-ethylcellulose gel preparation.
Topics: Administration, Cutaneous; Animals; Biological Availability; Caprylates; Cellulose; Chromatography, High Pressure Liquid; Delayed-Action Preparations; Diffusion; Ethanol; Excipients; Gels; In Vitro Techniques; Lauric Acids; Mice; Mice, Nude; Rats; Rats, Wistar; Skin Absorption; Theophylline; Triglycerides | 1995 |
Preparation and evaluation of micro-porous ethylcellulose capsule as oral sustained-release preparation of theophylline.
Topics: Administration, Oral; Animals; Capsules; Cellulose; Delayed-Action Preparations; Dogs; Food; Male; Solubility; Theophylline | 1998 |
The effect of the aqueous solubility of xanthine derivatives on the release mechanism from ethylcellulose matrix tablets.
Topics: Algorithms; Caffeine; Cellulose; Dyphylline; Kinetics; Solubility; Spectrophotometry, Ultraviolet; Tablets; Theophylline; Xanthines | 1999 |
Aqueous ethyl cellulose dispersions containing plasticizers of different water solubility and hydroxypropyl methylcellulose as coating material for diffusion pellets. I. Drug release rates from coated pellets.
Topics: Cellulose; Drug Implants; Lactose; Methylcellulose; Osmolar Concentration; Oxazines; Plasticizers; Solubility; Tablets, Enteric-Coated; Temperature; Theophylline; Water | 1999 |
Drug release from diffusion pellets coated with the aqueous ethyl cellulose dispersion Aquacoat ECD-30 and 20% dibutyl sebacate as plasticizer: partition mechanism and pore diffusion.
Topics: Cellulose; Dicarboxylic Acids; Diffusion; Drug Implants; Guaifenesin; Hydrogen-Ion Concentration; Osmotic Pressure; Plasticizers; Porosity; Sucrose; Suspensions; Theophylline | 1999 |
Diffusion-controlled drug delivery systems: calculation of the required composition to achieve desired release profiles.
Topics: Cellulose; Diffusion; Diltiazem; Drug Delivery Systems; In Vitro Techniques; Models, Biological; Plasticizers; Polymers; Theophylline; Time Factors; Vasodilator Agents | 1999 |
Effect of pectinolytic enzymes on the theophylline release from pellets coated with water insoluble polymers containing pectin HM or calcium pectinate.
Topics: Absorption; Acrylic Resins; Cellulose; Particle Size; Pectins; Polygalacturonase; Polymers; Polymethacrylic Acids; Solubility; Theophylline; Water | 2000 |
Measurement of film thickness on the surface of coated pellets and its influence on drug dissolution rate.
Topics: Cellulose; Dosage Forms; Excipients; Image Processing, Computer-Assisted; Kinetics; Polymethacrylic Acids; Powders; Solubility; Surface Properties; Theophylline | 2000 |
Influence of plasticization time, curing conditions, storage time, and core properties on the drug release from Aquacoat-coated pellets.
Topics: Cellulose; Chlorpheniramine; Citrates; Colloids; Delayed-Action Preparations; Drug Implants; Drug Storage; Excipients; Histamine H1 Antagonists; Phosphodiesterase Inhibitors; Plasticizers; Theophylline | 2001 |
Release characteristics of the matrices prepared from co-spray-dried powders of theophylline and ethylcellulose.
Topics: Bronchodilator Agents; Cellulose; Chemistry, Pharmaceutical; Compressive Strength; Diffusion; Hydrogen-Ion Concentration; Porosity; Powders; Sclerosing Solutions; Theophylline | 2002 |
Development of controlled release matrix pellets by annealing with micronized water-insoluble or enteric polymers.
Topics: Cellulose; Drug Compounding; Drug Implants; Drug Stability; Excipients; Hardness; Methylcellulose; Microscopy, Electron, Scanning; Particle Size; Polymers; Solubility; Temperature; Theophylline; Water; X-Ray Diffraction | 2002 |
Influence of excipients, drugs, and osmotic agent in the inner core on the time-controlled disintegration of compression-coated ethylcellulose tablets.
Topics: Albuterol; Cellulose; Chemistry, Pharmaceutical; Delayed-Action Preparations; Diclofenac; Drug Compounding; Excipients; Hardness; Kinetics; Osmosis; Particle Size; Pharmaceutical Preparations; Powders; Pressure; Sodium Chloride; Solubility; Tablets; Theophylline; Time Factors | 2002 |
Prediction of in vivo drug release behavior of controlled-release multiple-unit dosage forms in dogs using a flow-through type dissolution test method.
Topics: Acetaminophen; Administration, Oral; Animals; Biological Availability; Cellulose; Chromatography, High Pressure Liquid; Delayed-Action Preparations; Dogs; Drug Carriers; Forecasting; Intestinal Absorption; Male; Models, Biological; Phenylpropanolamine; Solubility; Theophylline | 2003 |
Effects of different cellulose derivatives on drug release mechanism studied at a preformulation stage.
Topics: Algorithms; Cellulose; Chemistry, Pharmaceutical; Drug Carriers; Excipients; Hypromellose Derivatives; Magnetic Resonance Spectroscopy; Methylcellulose; Microscopy, Electron, Scanning; Pharmaceutical Preparations; Powders; Solubility; Tablets; Theophylline | 2004 |
Novel and simple preparation method of matrix-type composite particles for controlled drug release by mechanical action.
Topics: Bronchodilator Agents; Cellulose; Delayed-Action Preparations; Drug Compounding; Excipients; Microscopy, Electron, Scanning; Particle Size; Powders; Spectrophotometry, Ultraviolet; Theophylline; Vibration | 2004 |
[Theophylline release and diffusion from a compressed ethylcellulose matrix through an artificial membrane].
Topics: Algorithms; Bronchodilator Agents; Cellulose; Delayed-Action Preparations; Excipients; Membranes, Artificial; Theophylline | 2004 |
Blends of aqueous polymer dispersions used for pellet coating: importance of the particle size.
Topics: Cellulose; Chemical Phenomena; Chemistry, Physical; Chromatography, High Pressure Liquid; Dosage Forms; Drug Carriers; Drug Stability; Emulsions; Hardness Tests; Kinetics; Methylcellulose; Microscopy, Electron, Scanning; Particle Size; Plasticizers; Polymers; Polymethacrylic Acids; Surface Properties; Theophylline | 2005 |
Development of a simple method for the preparation of a silica gel based controlled delivery system with a high drug content.
Topics: Cellulose; Chemistry, Pharmaceutical; Delayed-Action Preparations; Dose-Response Relationship, Drug; Drug Carriers; Drug Stability; Gels; Methylcellulose; Polyethylene Glycols; Porosity; Silica Gel; Silicon Dioxide; Solubility; Surface-Active Agents; Theophylline; Time Factors | 2005 |
Performance of multilayered particles: influence of a thin cushioning layer.
Topics: Cellulose; Chemistry, Pharmaceutical; Drug Compounding; Excipients; Hypromellose Derivatives; Methylcellulose; Solubility; Tablets, Enteric-Coated; Theophylline | 2005 |
Development and mathematical simulation of theophylline pulsatile release tablets.
Topics: Absorption; Algorithms; Bronchodilator Agents; Cellulose; Chemistry, Pharmaceutical; Delayed-Action Preparations; Diffusion; Excipients; Hardness; Kinetics; Microscopy, Electron, Scanning; Models, Statistical; Plasticizers; Solubility; Theophylline | 2005 |
Evaluation of ethylcellulose as matrices for controlled release drug delivery.
Topics: Cellulose; Compressive Strength; Delayed-Action Preparations; Diclofenac; Diltiazem; Drug Carriers; Hydrogen-Ion Concentration; Kinetics; Solubility; Tablets; Technology, Pharmaceutical; Theophylline; Time Factors | 2005 |
Development of pulsatile multiparticulate drug delivery system coated with aqueous dispersion Aquacoat ECD.
Topics: Adrenergic beta-Antagonists; Algorithms; Bronchodilator Agents; Cellulose; Drug Delivery Systems; Membranes, Artificial; Permeability; Polymers; Propranolol; Theophylline | 2006 |
pH-sensitive film coatings: towards a better understanding and facilitated optimization.
Topics: Alginates; Cellulose; Delayed-Action Preparations; Diffusion; Drug Carriers; Gastric Juice; Hydrogen-Ion Concentration; Intestinal Secretions; Kinetics; Theophylline; Water | 2008 |
How to improve the storage stability of aqueous polymeric film coatings.
Topics: Cellulose; Delayed-Action Preparations; Drug Stability; Drug Storage; Excipients; Humidity; Solubility; Temperature; Theophylline | 2008 |
An in vivo comparison of intestinal pH and bacteria as physiological trigger mechanisms for colonic targeting in man.
Topics: Adult; Amylose; Cellulose; Colon; Cross-Over Studies; Drug Carriers; Drug Compounding; Gastrointestinal Transit; Humans; Hydrogen-Ion Concentration; Male; Polymethacrylic Acids; Solubility; Technetium; Theophylline | 2008 |
Formulation and characterization of a compacted multiparticulate system for modified release of water-soluble drugs--Part II theophylline and cimetidine.
Topics: Algorithms; Bronchodilator Agents; Cellulose; Chemistry, Pharmaceutical; Cimetidine; Drug Compounding; Excipients; Histamine H2 Antagonists; Humidity; Kinetics; Lipids; Particle Size; Particulate Matter; Polymethacrylic Acids; Solubility; Tablets; Theophylline; Water | 2009 |
Drug release mechanisms from ethylcellulose: PVA-PEG graft copolymer-coated pellets.
Topics: Acetaminophen; Cellulose; Chemistry, Pharmaceutical; Diltiazem; Drug Carriers; Drug Delivery Systems; Metoprolol; Polyethylene Glycols; Polymers; Polyvinyl Alcohol; Tablets, Enteric-Coated; Technology, Pharmaceutical; Temperature; Theophylline | 2009 |
Evaluation of the mechanical properties of extrusion-spheronized beads and multiparticulate systems.
Topics: Cellulose; Cimetidine; Excipients; Glycerides; Methacrylates; Polymers; Tablets; Technology, Pharmaceutical; Theophylline; Time Factors | 2009 |
Simulated food effects on drug release from ethylcellulose: PVA-PEG graft copolymer-coated pellets.
Topics: Cellulose; Chemistry, Pharmaceutical; Diltiazem; Drug Carriers; Food; Polyvinyls; Tablets, Enteric-Coated; Theophylline | 2010 |
Effect of the molecular size of carboxymethylcellulose and some polymers on the sustained release of theophylline from a hydrophilic matrix.
Topics: Carboxymethylcellulose Sodium; Cellulose; Chemistry, Pharmaceutical; Delayed-Action Preparations; Drug Carriers; Hardness; Kinetics; Polymers; Polymethacrylic Acids; Solubility; Tablets; Theophylline | 2006 |
Effect of water-soluble polymers on the physical stability of aqueous polymeric dispersions and their implications on the drug release from coated pellets.
Topics: Cellulose; Chemistry, Pharmaceutical; Drug Implants; Drug Stability; Excipients; Flocculation; Kinetics; Nephelometry and Turbidimetry; Polyvinyls; Propranolol; Solubility; Theophylline | 2010 |
Design and optimization of colon-targeted system of theophylline for chronotherapy of nocturnal asthma.
Topics: Animals; Asthma; Bronchodilator Agents; Cellulose; Chronotherapy; Colon; Delayed-Action Preparations; Drug Stability; Polymethacrylic Acids; Rabbits; Theophylline | 2011 |
NIR spectroscopy applications in the development of a compacted multiparticulate system for modified release.
Topics: Anti-Ulcer Agents; Bronchodilator Agents; Cellulose; Cimetidine; Delayed-Action Preparations; Dosage Forms; Drug Delivery Systems; Excipients; Humans; Lipids; Methacrylates; Models, Statistical; Placebos; Polymers; Spectroscopy, Near-Infrared; Tablets; Theophylline | 2011 |
Dynamic and static curing of ethylcellulose:PVA-PEG graft copolymer film coatings.
Topics: Antihypertensive Agents; Bronchodilator Agents; Cellulose; Delayed-Action Preparations; Drug Carriers; Drug Compounding; Drug Delivery Systems; Drug Implants; Drug Stability; Excipients; Metoprolol; Polymers; Polyvinyls; Solubility; Sucrose; Suspensions; Theophylline | 2011 |
Eudraginated polymer blends: a potential oral controlled drug delivery system for theophylline.
Topics: Acrylates; Administration, Oral; Animals; Area Under Curve; Biological Availability; Carboxymethylcellulose Sodium; Cellulose; Chemistry, Pharmaceutical; Delayed-Action Preparations; Drug Carriers; Drug Compounding; Hydrogen-Ion Concentration; Intestinal Absorption; Male; Polymethacrylic Acids; Rabbits; Solubility; Tablets; Technology, Pharmaceutical; Theophylline | 2012 |
Ethanol-resistant polymeric film coatings for controlled drug delivery.
Topics: Cellulose; Delayed-Action Preparations; Ethanol; Galactans; Mannans; Plant Gums; Theophylline; Vasodilator Agents | 2013 |
Ethanol-resistant ethylcellulose/guar gum coatings--importance of formulation parameters.
Topics: Alcohol Drinking; Cellulose; Chemistry, Pharmaceutical; Delayed-Action Preparations; Drug Stability; Ethanol; Excipients; Galactans; Kinetics; Mannans; Microscopy, Electron, Scanning; Plant Gums; Polymers; Solubility; Solutions; Surface Properties; Theophylline; Viscosity | 2013 |
Mechanisms controlling theophylline release from ethanol-resistant coated pellets.
Topics: Bronchodilator Agents; Cellulose; Computer Simulation; Diffusion; Drug Carriers; Ethanol; Galactans; Mannans; Models, Chemical; Plant Gums; Theophylline | 2014 |
Surelease or organic solution of ethylcellulose in preparation of sustained release theophylline micromatrices or matrices using spray drying technique.
Topics: Calorimetry, Differential Scanning; Cellulose; Delayed-Action Preparations; Drug Compounding; Drug Liberation; Drug Stability; Excipients; Microscopy, Electron, Scanning; Microspheres; Particle Size; Solutions; Spectrophotometry, Infrared; Surface Properties; Tablets; Technology, Pharmaceutical; Theophylline | 2015 |
Film-coated matrix mini-tablets for the extended release of a water-soluble drug.
Topics: Cellulose; Delayed-Action Preparations; Drug Compounding; Drug Delivery Systems; Drug Liberation; Excipients; Gels; Hypromellose Derivatives; Kinetics; Microscopy, Electron, Scanning; Phosphodiesterase Inhibitors; Polyethylene Glycols; Polyvinyl Alcohol; Polyvinyls; Porosity; Solubility; Surface Properties; Tablets; Theophylline | 2015 |
Surelease as granulating liquid in preparation of sustained release matrices of ethylcellulose and theophylline.
Topics: Cellulose; Delayed-Action Preparations; Drug Liberation; Elasticity; Hardness; Particle Size; Solubility; Tablets; Technology, Pharmaceutical; Theophylline | 2015 |
Gastro-resistant characteristics of GRAS-grade enteric coatings for pharmaceutical and nutraceutical products.
Topics: Alginates; Carboxymethylcellulose Sodium; Cellulose; Delayed-Action Preparations; Dietary Supplements; Drug Approval; Gastric Juice; Glucuronic Acid; Hexuronic Acids; Hydrogen-Ion Concentration; Intestinal Secretions; Resins, Plant; Tablets; Theophylline | 2015 |
Design and statistical optimization of an effervescent floating drug delivery system of theophylline using response surface methodology.
Topics: Calorimetry, Differential Scanning; Cellulose; Chemistry, Pharmaceutical; Drug Carriers; Drug Delivery Systems; Drug Liberation; Excipients; Polyethylene Glycols; Polymers; Polymethacrylic Acids; Polysaccharides, Bacterial; Sodium Bicarbonate; Solubility; Spectroscopy, Fourier Transform Infrared; Tablets; Theophylline | 2016 |
Effect of Variation in Viscosity Grade of Ethycellulose on Theophylline Microcapsule Properties Prepared by Emulsion Solvent Evaporation.
Topics: Cellulose; Emulsions; Particle Size; Solvents; Surface Properties; Theophylline; Viscosity; Volatilization | 2017 |
Nonionic surfactant structure on the drug release, formulation and physical properties of ethylcellulose microspheres.
Topics: Cellulose; Cetomacrogol; Drug Carriers; Drug Compounding; Drug Liberation; Microscopy, Electron, Scanning; Microspheres; Particle Size; Polysorbates; Solubility; Surface Properties; Surface-Active Agents; Theophylline | 2017 |
Determination of the release mechanism of Theophylline from pellets coated with Surelease
Topics: Cellulose; Delayed-Action Preparations; Drug Liberation; Solubility; Theophylline; Water | 2017 |
Mechanical particle coating using ethylcellulose nanoparticle agglomerates for preparing controlled release fine particles; effect of coating temperature on coating performance.
Topics: Cellulose; Chemistry, Pharmaceutical; Delayed-Action Preparations; Excipients; Freeze Drying; Nanoparticles; Particle Size; Polymers; Porosity; Temperature; Theophylline; Transition Temperature | 2019 |