Abstract：
:We present the design of an electronically controlled drug delivery system. The intravaginally located device is a low-invasive platform that can measure and react inside the cow vagina while providing external control and monitoring ability. The electronics manufactured from off the shelf components occupies 16 mL of a Theratron syringe. A microcontroller reads and logs sensor data and controls a gascell. The generated gas pressure propels the syringe piston and releases the formulation. A two way radio link allows communication between other devices or a base station. Proof of principle experiments confirm variable-rate, arbitrary profile drug delivery qualified by internal sensors. A total volume of 30 mL was dispensed over a 7-day-period with a volume error of +/- 1 mL or +/- 7% for larger volumes. Delivery was controlled or overridden via the wireless link, and proximity to other devices was detected and recorded. The results suggest that temperature and activity sensing or social grouping determined via proximity can be used to detect oestrus and trigger appropriate responses.
journal_name
Int J Pharmjournal_title
International journal of pharmaceuticsauthors
Cross PS,Künnemeyer R,Bunt CR,Carnegie DA,Rathbone MJdoi
10.1016/j.ijpharm.2004.05.023keywords:
subject
Has Abstractpub_date
2004-09-10 00:00:00pages
35-44issue
1-2eissn
0378-5173issn
1873-3476pii
S0378517304002911journal_volume
282pub_type
杂志文章abstract：:We examined the effects of metabolic inhibitors on skin permeation of edaravone. SKF-525A, diclofenac sodium (DIC) and indomethacin (IND) were added to supernatant fluid (SF) of hairless rat (HR) skin homogenate. L-Cysteine (L-Cys) and benzotriazole (BTA), as pharmaceutical additives, were added to HR skin homogenate ...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2008.12.038
更新日期：2009-05-08 00:00:00
abstract：:The aim of this study was to investigate if amorphous indomethacin samples, prepared using different preparation methods, exhibit different structural and kinetic characteristics and if these differences can be correlated to their physical stability (time to crystallisation). Samples were prepared by melt quenching, s...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
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abstract：:The effect of dry granulation (roller compaction and slugging) on compactibility and tablet capping tendency in a formulation with macrolide antibiotic and microcrystalline cellulose (MCC) was investigated. Direct tableting of this formulation revealed a pronounced capping tendency. Both dry granulated systems exhibit...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2008.01.023
更新日期：2008-06-05 00:00:00
abstract：:The purpose of the present study is to prepare chemically and physically stable rhEGF/poloxamer gel and to investigate its possibility of ophthalmic delivery. The rhEGF/HP-beta-CD complex markedly increased rhEGF stability compared with rhEGF solution at 4 degrees C. The poloxamer gel was composed of poloxamer 407 (16...
journal_title：International journal of pharmaceutics
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doi：10.1016/s0378-5173(01)00933-4
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abstract：:The purpose of this research is to evaluate the effect of self-micelle formation and incorporation of lipid in the formulation on absorption of ginsenosides Rg1 and Rb1 from intestinal tract in rats. Ginsenosides Rg1 and Rb1 were extracted from Panax notoginseng saponins (PNS). The critical micellar concentration (CMC...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2008.04.016
更新日期：2008-08-06 00:00:00
abstract：:The combined approach of cyclodextrin complexation and entrapment in liposomes was investigated in order to develop an effective topical formulation of ketoprofen. Equimolar complex of drug and hydroxypropyl-beta-cyclodextrin (HPbetaCyd) was added at different concentrations to the aqueous phase of liposomes consistin...
journal_title：International journal of pharmaceutics
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doi：10.1016/j.ijpharm.2005.12.047
更新日期：2006-04-07 00:00:00
abstract：:Paclitaxel, a potential anticancer agent against solid tumors has been restricted from its oral use due to poor water solubility as well as Pgp efflux property. The present study was aimed to improve the oral bioavailability of paclitaxel through development of (o/w) nanoemulsion consisting of Capryol 90 as internal p...
journal_title：International journal of pharmaceutics
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doi：10.1016/j.ijpharm.2013.10.055
更新日期：2014-01-02 00:00:00
abstract：:Porphyrin and their derivatives are being systematically studied as photosensitizers for photodynamic therapy. The ability to predict their membrane partition properties is of key importance to unveil their in vivo activity and applications. Several n-octanol/water partition coefficients (logP(OW)) of porphyrin deriva...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2006.08.008
更新日期：2007-02-01 00:00:00
abstract：:Local drug delivery into oral cavity offers many advantages over systemic administration in treatment of the oral infections. In this study, monolayer and bilayered mucoadhesive film and wafer formulations were developed as local drug delivery platforms using chitosan and hydroxypropyl methylcellulose (HPMC). Cefuroxi...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
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更新日期：2019-03-25 00:00:00
abstract：:The application of nanoparticles (NPs) as radio-sensitizers and carriers has opened up a new horizon to overcome the limitations of chemo and radiotherapy. In this study, bovine serum albumin-coated Bi2S3 NPs (Bi2S3@BSA NPs) were synthesized and evaluated in terms of their ability to be used as a radio-sensitizer and ...
journal_title：International journal of pharmaceutics
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abstract：:Vaginal rings (VRs) are currently marketed for contraceptive or hormone regulation purposes, and investigationally, have been widely reported for delivery of antiretrovirals to reduce HIV transmission. To date, there is no national or international standard for the mechanical testing and minimum performance characteri...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2019.01.026
更新日期：2019-03-25 00:00:00
abstract：:The principal component of aqueous extract of jelly fig (Ficus awkeotsang Makino) seeds is a pectin-type polysaccharide, gelling even at room temperature without adding any sugars, acids or ions. The objective of this study was to evaluate jelly fig extract (JF) as a matrix base for sustained release tablets. Drug rel...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2004.08.023
更新日期：2004-12-09 00:00:00
abstract：:The objective of this study was to investigate the integrtity and stability of oral liposomes containing glycocholate (SGC-Lip) in simulated gastrointestinal (GI) media and ex vivo GI media from rats in comparison with conventional liposomes (CH-Lip) composed of soybean phosphatidylcholine and cholesterol. Membrane in...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2012.10.025
更新日期：2013-01-30 00:00:00
abstract：:A new set of 142 experimentally determined complexation constants between sulfobutylether-β-cyclodextrin and diverse organic guest molecules, and 78 observations reported in literature, were used for the development of the QSPR models by the two machine learning regression methods - Cubist and Random Forest. Similar m...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2011.03.065
更新日期：2011-10-14 00:00:00
abstract：:Immunostimulation represents a promising approach designed to specifically eradicate malignant cells. Since glioma tumour cells hole up in the central nervous system (CNS) in a particularly inauspicious milieu to antitumour immune reactions we here propose a new strategy to revert the properties of this microenvironme...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2005.07.029
更新日期：2006-05-18 00:00:00
abstract：:Water-in-oil (w/o) emulsions have shown a promising release profile of small drug molecules and proteins. However, the major concerns are the structural stability, the retention of the activity and to avoid unwanted immunological reactions caused by the changes in protein structure. In the present study, the secondary...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/s0378-5173(02)00668-3
更新日期：2003-03-18 00:00:00
abstract：:Insulin has been encapsulated in poly(lactic-co-glycolic acid) (PLGA) microspheres by solid-in-oil-in-oil (S/O/O) emulsion technique using DMF/corn oil as new solvent pairs. To get better encapsulation efficiency, insulin nanoparticles were prepared by the modified isoelectric point precipitation method so that it had...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2009.05.021
更新日期：2009-08-13 00:00:00
abstract：:Since the last decade, nanodispersed drug delivery systems gain increasingly more importance for therapeutic research fields. The forced transport to the centers of inflammation is supposed to take advantage as a novel strategic approach. Thus, the focus of this study was to investigate the applicability of ubiquinone...
journal_title：International journal of pharmaceutics
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abstract：:Dry powder inhalers (DPIs) are widely used to deliver respiratory medication as a fine powder. This study investigates the physical mechanism of DPI operation, assessing the effects of geometry, inhalation and powder type on dose fluidisation. Patient inhalation through an idealised DPI was simulated as a linearly inc...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2008.03.038
更新日期：2008-06-24 00:00:00
abstract：:The conventional medications are still facing a huge challenge for the treatment of rheumatoid arthritis (RA). Thus, looking for an effective therapy of RA has became an urgent issue nowadays. In this study, a novel thermosensitive liposome loaded with sinomenine hydrochloride (SIN-TSL) was developed by a pH gradient ...
journal_title：International journal of pharmaceutics
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journal_title：International journal of pharmaceutics
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更新日期：2003-11-06 00:00:00
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journal_title：International journal of pharmaceutics
pub_type： 杂志文章
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更新日期：1999-02-01 00:00:00
abstract：:An extrusion based 3D printer was used to prepare the semi-solid tablets with different drug loading dosages (75, 100, 125 mg) under ambient temperature. The active pharmaceutical ingredient, theophylline, was uploaded within the hydrogels prepared of hydroxypropyl methylcellulose (HPMC) K4M or E4M. The HPMC concentra...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2020.119983
更新日期：2020-12-15 00:00:00
abstract：:Microemulsions show excellent potential as drug delivery systems, but the surfactants used to prepare them can cause side effects. Researchers have explored various strategies to expand microemulsion area and thereby reduce the surfactant content necessary, but how these strategies affect drug oral bioavailability has...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2014.05.031
更新日期：2014-08-25 00:00:00
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journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/s0378-5173(02)00154-0
更新日期：2002-08-21 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：:Pyrogen induced secretion of interleukin 6 (IL-6) in Mono Mac 6 (MM6) cells was measured. The ability of the MM6 cell culture to detect pyrogens was compared to the Limulus amoebocyte lysate (LAL) test and isolated mononuclear cells (MNC). The detection limit of MM6 for lipopolysaccharide (LPS) and Staphylococcus aure...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/s0378-5173(99)00294-x
更新日期：1999-11-30 00:00:00
abstract：:The melting point of lidocaine was significantly lowered when mixed with thymol and/or aqueous ethanol. Mixtures of lidocaine and thymol at ratios within the range of 30:70-70:30 (w:w) became homogeneous oils at 25 degrees C. In a pH 9.2 carbonate buffer containing 25% ethanol, lidocaine (5%, w:w) also liquefied at 25...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
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更新日期：2001-07-03 00:00:00
abstract：:The aim of this study was to investigate how a selection of formulation variables affects the in vitro transfection efficiency and physicochemical properties (particle size, zetapotential and chitosan-plasmid association) of chitosan-based polyplexes. Experimental designs in combination with multivariate data analysis...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/s0378-5173(03)00301-6
更新日期：2003-08-11 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
