Abstract:
:Thermoreversible nasal gels of Vitamin B(12) using pluronic PF 127 were aimed to improve absorption and patient compliance. In the present research work, effects of Vitamin B(12) and gel additives, viz. PF concentration, osmolarity, polyethylene glycol (PEG 15000) on thermodynamic properties of phase transitions at gelation (T(1)) and gel melting (T(2)) is reported. Aqueous PF 127 gels prepared by cold method containing pluronic (20-24%, w/w), vitamin, sorbitol, PEG, and benzalkonium chloride. T(1) decreases and T(2) increases with vitamin and PF concentration. Gelation range narrows with sorbitol and PEG. Suppression of T(2) is significantly higher than T(1) with both the additives. The linearity was observed only for semilogarithmic plot of PF concentration and 1/T(2) for sorbitol and PEG, which reveals significant interaction of both at gel melting. Enthalpy of both transitions remains unchanged with vitamin indicating no interaction with polymer. Benzalkonium chloride decreased gelation onset temperature. Thermodynamic properties of PF 127 gels are significantly altered with polymer concentration and water-soluble formulation additives.
journal_name
Int J Pharmjournal_title
International journal of pharmaceuticsauthors
Pisal SS,Paradkar AR,Mahadik KR,Kadam SSdoi
10.1016/j.ijpharm.2003.10.005keywords:
subject
Has Abstractpub_date
2004-02-11 00:00:00pages
37-45issue
1-2eissn
0378-5173issn
1873-3476pii
S0378517303005647journal_volume
270pub_type
杂志文章abstract::The aim of the present work was to characterize in vitro sumatriptan transdermal absorption through human skin and to investigate the effect of chemical enhancers and iontophoresis applied both individually and in combination. A secondary objective was to compare the results obtained with those in porcine skin under t...
journal_title:International journal of pharmaceutics
pub_type: 杂志文章
doi:10.1016/j.ijpharm.2006.05.049
更新日期:2006-10-12 00:00:00
abstract::Clinical performance of an amorphous solid dispersion (ASD) drug product is related to the amorphous drug content because of the greater bioavailability of this form of the drug than its crystalline form. Therefore, it is paramount to monitor the amorphous and the crystalline fractions in the ASD products. The objecti...
journal_title:International journal of pharmaceutics
pub_type: 杂志文章
doi:10.1016/j.ijpharm.2014.08.050
更新日期:2014-11-20 00:00:00
abstract::pH-responsive polymer shell chitosan/poly (methacrylic acid) (CS-PMAA) was coated on mesoporous silica nanoparticles (MSN) through the facile in situ polymerization method. The resultant composite microspheres showed a flexible control over shell thickness, surface charges and hydrodynamic size by adjusting the feedin...
journal_title:International journal of pharmaceutics
pub_type: 杂志文章
doi:10.1016/j.ijpharm.2011.10.013
更新日期:2011-12-15 00:00:00
abstract::The purpose of the present study was to design an optimal ketoprofen gel with appropriate penetration rate, shortened lag time and acceptable skin irritation. The combination of different mechanism enhancers including nonivamide, menthol and ethanol were used as multi-enhancers for producing a synergistic enhancement ...
journal_title:International journal of pharmaceutics
pub_type: 杂志文章
doi:10.1016/j.ijpharm.2007.02.020
更新日期:2007-07-18 00:00:00
abstract::Naked plasmid DNA is a powerful tool for gene therapy, but it is rapidly eliminated from the circulation after intravenous administration. Therefore, the development of optimized DNA delivery systems is necessary for its successful clinical use. Solid lipid nanoparticles (SLNs) have demonstrated transfection capacity ...
journal_title:International journal of pharmaceutics
pub_type: 杂志文章
doi:10.1016/j.ijpharm.2009.10.020
更新日期:2010-01-29 00:00:00
abstract::Silk fibroin (SF) and poly(lactide-co-glycolic acid) (PLGA) have been proved to be invaluable polymers in the field wound healing. This study aims at optimizing the electrospinning process of those polymers to make a hybrid membrane as a chronic wounds dressing. After characterizing the scaffolds, PLGA/SF (2:1), and P...
journal_title:International journal of pharmaceutics
pub_type: 杂志文章
doi:10.1016/j.ijpharm.2014.07.021
更新日期:2014-10-01 00:00:00
abstract::The aim of this study was to investigate the in vitro dissolution characteristics of pH-responsive polymers in a variety of simulated fluids. Prednisolone tablets were fabricated and coated with the following polymer systems: Eudragit S (organic solution), Eudragit S (aqueous dispersion), Eudragit FS (aqueous dispersi...
journal_title:International journal of pharmaceutics
pub_type: 杂志文章
doi:10.1016/j.ijpharm.2005.10.038
更新日期:2006-02-03 00:00:00
abstract::Glycyrrhizic acid is the main active component of Licorice root which has been known in traditional Chinese and Japanese medicine since ancient times. In these cultures glycyrrhizic acid (GA) is one of the most frequently used drugs. However, only in 21-st century a novel unusual property of the GA to enhance the acti...
journal_title:International journal of pharmaceutics
pub_type: 杂志文章,评审
doi:10.1016/j.ijpharm.2019.01.047
更新日期:2019-03-25 00:00:00
abstract::The main objective of this study was to improve the safety and oxidative stability of glycerol monooleate (GMO)-based dry-emulsion (DE) formulation containing cyclosporine A (CsA) for inhalation therapy. GMO or highly purified GMO (hpGMO) was used as surfactant for the DE formulations (GMO/DE or hpGMO/DE), the toxicol...
journal_title:International journal of pharmaceutics
pub_type: 杂志文章
doi:10.1016/j.ijpharm.2013.03.026
更新日期:2013-05-01 00:00:00
abstract::Colon diseases are difficult to treat because oral administrated drugs are absorbed at the stomach and intestine levels and they do not reach colon; in addition, intravenous administrated drugs are eliminated from the body before reaching colon. Inulin is a naturally occurring polysaccharide found in many plants. It c...
journal_title:International journal of pharmaceutics
pub_type: 杂志文章
doi:10.1016/j.ijpharm.2014.12.064
更新日期:2015-02-01 00:00:00
abstract::The aim of this study was to evaluate the transdermal permeation enhancement of N-trimethyl chitosan (TMC) with different degrees of quaternization (DQ). TMCs with DQ of 40 and 60% (TMC40 and TMC60) were synthesized and characterized by (1)H NMR. Testosterone (TS) used as an effective drug, four different gels were pr...
journal_title:International journal of pharmaceutics
pub_type: 杂志文章
doi:10.1016/j.ijpharm.2007.12.050
更新日期:2008-05-22 00:00:00
abstract::Finasteride is indicated orally in the treatment of androgenetic alopecia and some other pilosebaceous unit (PSU) disorders. We wished to investigate whether topical application of finasteride-containing vesicles (liposomes and niosomes) could enhance drug concentration at the PSU, as compared to finasteride hydroalco...
journal_title:International journal of pharmaceutics
pub_type: 杂志文章
doi:10.1016/j.ijpharm.2006.05.041
更新日期:2006-10-12 00:00:00
abstract::The infection of bone and bone marrow is called osteomyelitis. Treatment is difficult since antibiotics can not reach with enough concentration to the infected area. For the first time in this study, we have developed gentamicin-loaded magnetic gelatin nanoparticles (GMGNPs) for nanocarrier-mediated and magnetically t...
journal_title:International journal of pharmaceutics
pub_type: 杂志文章
doi:10.1016/j.ijpharm.2020.119999
更新日期:2021-01-05 00:00:00
abstract::Despite the substantial body of research investigating the use of liposomes, niosomes and other bilayer vesicles for drug delivery, the translation of these systems into licensed products remains limited. Indeed, recent shortages in the supply of liposomal products demonstrate the need for new scalable production meth...
journal_title:International journal of pharmaceutics
pub_type: 杂志文章
doi:10.1016/j.ijpharm.2016.09.027
更新日期:2016-11-30 00:00:00
abstract::We developed a polyethylene glycol (PEG)-based biodegradable hydrogel through disulfide crosslinking of polyethylene oxide sulfide (PEOS). The crosslinking rate was highly dependent on temperature, and incubation at about 40-50 degrees C was required for efficient crosslinking. The crosslinked PEOS hydrogel showed glu...
journal_title:International journal of pharmaceutics
pub_type: 杂志文章
doi:10.1016/j.ijpharm.2009.03.010
更新日期:2009-06-05 00:00:00
abstract::Non-viral delivery using cationic solid lipid nanoparticles (SLNs) represents a useful strategy to introduce large DNA and RNA molecules to target cells. A careful selection of components and their amounts is critical to improve transfection efficiency. In this work, a selected and optimized formulation of SLNs was us...
journal_title:International journal of pharmaceutics
pub_type: 杂志文章
doi:10.1016/j.ijpharm.2016.11.026
更新日期:2017-01-10 00:00:00
abstract::The purpose of this study was to develop the correlation of cycle parameters between a laboratory and a production freeze-dryer. With the established correlation, key cycle parameters obtained using a laboratory dryer may be converted to those for a production dryer with minimal experimental efforts. In order to devel...
journal_title:International journal of pharmaceutics
pub_type: 杂志文章
doi:10.1016/j.ijpharm.2005.06.022
更新日期:2005-09-30 00:00:00
abstract::HL235 is a new cathepsin K inhibitor designed and synthesized to treat osteoporosis. Since HL235 has poor aqueous solubility, a self-microemulsifying drug delivery system (SMEDDS) was formulated to enhance its oral bioavailability. A solubility study of HL235 was performed to select a suitable oil, surfactant and cosu...
journal_title:International journal of pharmaceutics
pub_type: 杂志文章
doi:10.1016/j.ijpharm.2019.118772
更新日期:2020-01-05 00:00:00
abstract::The objective was to quantify drug loss due to cold flow (CF) in marketed estradiol transdermal drug delivery systems (TDDS), and study its influence on the in vitro flux and drug transfer across contacting skin. TDDS samples (products-A and B) were induced with CF at 25 and 32°C/60% RH by applying 1-kg force for 72h....
journal_title:International journal of pharmaceutics
pub_type: 杂志文章
doi:10.1016/j.ijpharm.2014.10.013
更新日期:2014-12-30 00:00:00
abstract::Gastro-floating tablets of cephalexin were developed to prolong the residence time in major absorption sites. Gastro-floating tablets were prepared and optimized using hydroxypropyl methylcellulose (HPMC K100M) as matrix and sodium bicarbonate as a gas-forming agent. The properties of the tablets in terms of floating ...
journal_title:International journal of pharmaceutics
pub_type: 杂志文章
doi:10.1016/j.ijpharm.2013.05.011
更新日期:2013-08-16 00:00:00
abstract::The occurrence of lung cancer is linked with tobacco smoking, mainly through the generation of polycyclic aromatic hydrocarbons (PAHs). Elevated activity of cytochrome P4501A1 (CYP1A1) plays an important role in the metabolic processing of PAHs and its carcinogenicity. The present work aimed to investigate the role of...
journal_title:International journal of pharmaceutics
pub_type: 杂志文章
doi:10.1016/j.ijpharm.2019.04.078
更新日期:2019-07-20 00:00:00
abstract::Chronic non-healing wounds tender a great challenge to patients, physicians, and wound care professionals. In view of the increasing prevalence of chronic wounds due to ischemia, diabetic foot, venous, and pressure ulcers, their appropriate management requires significant attention. Along with the basic techniques of ...
journal_title:International journal of pharmaceutics
pub_type: 杂志文章,评审
doi:10.1016/j.ijpharm.2021.120270
更新日期:2021-01-21 00:00:00
abstract::The objective of the present study was to evaluate three formulation parameters for the application of polymethacrylic films from aqueous dispersions in order to obtain multiparticulate sustained release of diclofenac sodium. Film coating of pellet cores was performed in a laboratory fluid bed apparatus. The chosen in...
journal_title:International journal of pharmaceutics
pub_type: 杂志文章
doi:10.1016/s0378-5173(03)00061-9
更新日期:2003-04-30 00:00:00
abstract::The objectives of this study were to determine the oral bioavailability of cefuroxime (C) and to evaluate the pharmacokinetic model that best describes the plasma concentration behaviour following single intravenous (IV), intraperitoneal (IP) and oral single doses. The same dose of C was administered by IV, IP and ora...
journal_title:International journal of pharmaceutics
pub_type: 杂志文章
doi:10.1016/s0378-5173(00)00420-8
更新日期:2000-07-20 00:00:00
abstract::Chemically modified tetracyclines (CMTs) have been reported to strongly inhibit proliferation and metastasis of various cancers, but their efficacy is restricted by poor water solubility. In the present study, a hydrophilic 4-dedimethylamino sancycline (CMT-3) loaded nanostructured lipid carrier (CMT-3/NLC) was produc...
journal_title:International journal of pharmaceutics
pub_type: 杂志文章
doi:10.1016/j.ijpharm.2013.04.021
更新日期:2013-06-25 00:00:00
abstract::The effect of the GlycoPEGylation process used for prolonging the half-life of recombinant factor IX (rFIX) has no impact on the primary and higher order structure of activated factor IX. Characterisation work performed on recombinant factor IX and on the GlycoPEGylated form of rFIX (N9-GP), confirm that the primary s...
journal_title:International journal of pharmaceutics
pub_type: 杂志文章
doi:10.1016/j.ijpharm.2020.119654
更新日期:2020-10-15 00:00:00
abstract::In order to improve the dissolution and absorption properties of loviride, a poorly soluble antiviral agent, sucrose co-freeze-dried nanopowders were prepared, characterized and evaluated. Tween 80/poloxamer 188-stabilized nanosuspensions were produced on a laboratory scale using media milling. The milling process was...
journal_title:International journal of pharmaceutics
pub_type: 杂志文章
doi:10.1016/j.ijpharm.2007.02.005
更新日期:2007-06-29 00:00:00
abstract::The present study aimed to develop an in situ gel formulation for intranasal delivery of tacrine (THA), an anti-Alzheimer's drug. Thermosensitive polymer Pluronic F-127 was used to prepare THA in situ gels. Sol-gel transition temperature (Tsol-gel), rheological properties, in vitro release, and in vivo nasal mucocilia...
journal_title:International journal of pharmaceutics
pub_type: 杂志文章
doi:10.1016/j.ijpharm.2014.04.015
更新日期:2014-07-01 00:00:00
abstract::Estimates of the human oral absolute bioavailability were made by using a physiological-based pharmacokinetic model of absorption and the drug solubility at the gastrointestinal pH range 1.5-7.5, the apparent permeability (P(app)) in Caco-2 cells and the intrinsic clearance (Cl(int)) in human hepatocytes suspensions a...
journal_title:International journal of pharmaceutics
pub_type: 杂志文章
doi:10.1016/j.ijpharm.2012.03.019
更新日期:2012-06-15 00:00:00
abstract::Delivery of poorly soluble drugs has been problematic due to its low absorption profile and bioavailability. In this work, ursodeoxycholic acid (UDCA), a poorly-soluble drug, was intercalated into inorganic nanovehicle, layered double hydroxides (LDHs), with a molecular level to enhance its solubility in biological fl...
journal_title:International journal of pharmaceutics
pub_type: 杂志文章
doi:10.1016/j.ijpharm.2010.09.039
更新日期:2010-12-15 00:00:00