Abstract:
INTRODUCTION:Biopolymers have been used extensively in the pharmaceutical field. Pectin, a biopolymer, has several unique properties that enable it to be used as an excipient or carrier for oral drug delivery systems. Accordingly, several investigators have identified the benefits of pectin-based delivery systems for oral drug administration. AREAS COVERED:This review first describes the chemical structure, source and production, degree of esterification and gel formation properties of pectin. The application of pectin in various oral drug delivery platforms is also discussed, that is, controlled release systems, gastro-retentive systems, colon-specific delivery systems and mucoadhesive delivery systems. EXPERT OPINION:Pectin from different sources provides different gelling abilities, due to variations in molecular size and chemical composition. Like other natural polymers, a major problem with pectin is inconsistency in reproducibility between samples, which may result in poor reproducibility in delivery characteristics. Scintigraphic studies and in vivo studies, in both animals and human volunteers, demonstrate the successful development of a pectin-based colon-specific drug delivery system. Pectin-based controlled release systems, gastro-retentive systems and mucoadhesive systems present promising approaches for increasing the bioavailability of drugs, but are in their infancy. A lack of direct correlation between in vitro release and in vivo absorption studies is a major concern with these systems.
journal_name
Expert Opin Drug Delivjournal_title
Expert opinion on drug deliveryauthors
Sriamornsak Pdoi
10.1517/17425247.2011.584867subject
Has Abstractpub_date
2011-08-01 00:00:00pages
1009-23issue
8eissn
1742-5247issn
1744-7593journal_volume
8pub_type
杂志文章,评审abstract::The demand for new vaccine adjuvants is well documented. New purified antigens from parasites, bacterial or viral pathogens, as well as recombinant subunit antigens and synthetic peptides, are often inherently weak immunogens; therefore, they need some kind of adjuvant to help initiate an immune response. In addition,...
journal_title:Expert opinion on drug delivery
pub_type: 杂志文章,评审
doi:10.1517/17425247.2.5.807
更新日期:2005-09-01 00:00:00
abstract:BACKGROUND:Augmentation of simvastatin (SMV) cytotoxicity in breast carcinoma cell lines MCF-7, by: improvement of cellular uptake and loading on alpha lipoic acid (ALA). METHODS:In this study, SMV was loaded on ALA nanoparticles and characterized for surface morphology, SMV entrapment efficiency percent (%EE), zeta p...
journal_title:Expert opinion on drug delivery
pub_type: 杂志文章
doi:10.1080/17425247.2016.1236788
更新日期:2016-12-01 00:00:00
abstract:INTRODUCTION:Transdermal drug delivery has several known advantages over the oral route and hypodermic injections. The number of drugs that can be taken up transdermally is, however, limited owing to the innate barrier function of the skin. New transdermal drug candidates need to be tested extensively before being used...
journal_title:Expert opinion on drug delivery
pub_type: 杂志文章,评审
doi:10.1517/17425247.2011.568937
更新日期:2011-06-01 00:00:00
abstract::With the advent of new, and often expensive, therapeutics designed for aerosol delivery to the lung, there is a need to improve the targeting and efficiency of their delivery. By controlling breathing patterns associated with inhaled aerosols, it has been shown that deposition in the lung can be both maximised and tar...
journal_title:Expert opinion on drug delivery
pub_type: 杂志文章
doi:10.1517/17425247.2.4.763
更新日期:2005-07-01 00:00:00
abstract::Nitric oxide (NO), the 1992 'Molecule of the Year', is the focus of immense medical and scientific exploration. Interest in NO has grown exponentially since the initial and relatively recent discovery that NO is the long sought after endothelial relaxing factor. There is intense research that is continuing to expose t...
journal_title:Expert opinion on drug delivery
pub_type: 杂志文章,评审
doi:10.1517/17425240903196743
更新日期:2009-10-01 00:00:00
abstract:BACKGROUND:The lung comprises an interesting route of administration not only for topical drugs but also for systemically acting drugs. Over the last years, several models have been developed in order to study the efficacy and safety of pulmonary drug delivery. OBJECTIVE:This review describes relevant drug delivery mo...
journal_title:Expert opinion on drug delivery
pub_type: 杂志文章,评审
doi:10.1517/17425240903241788
更新日期:2009-11-01 00:00:00
abstract:INTRODUCTION:Many new drug substances have low aqueous solubility which can cause poor bioavailability after oral administration. The application of solid dispersions is a useful method to increase the dissolution rate of these drugs and thereby improve their bioavailability. So far, several methods have been developed...
journal_title:Expert opinion on drug delivery
pub_type: 杂志文章,评审
doi:10.1517/17425247.2011.598147
更新日期:2011-09-01 00:00:00
abstract:BACKGROUND:Liposomes, phospholipids, nanosized bubbles with a bilayered membrane structure, have drawn a lot of interest as pharmaceutical carriers for drugs and genes. In particular, liposomes are widely used for drug delivery into tumors. OBJECTIVE:In many cases, to enhance the efficacy of the liposomal drugs, drug-...
journal_title:Expert opinion on drug delivery
pub_type: 杂志文章,评审
doi:10.1517/17425247.5.9.1003
更新日期:2008-09-01 00:00:00
abstract:OBJECTIVES:Methotrexate (MTX) is a chemotherapeutic and anti-inflammatory drug that may cause systemic adverse effects. This study investigated kinetics and biodistribution of MTX delivered topically by ablative fractional laser (AFXL). METHODS:In vitro passive diffusion of 10 mg/ml MTX (1 w/v%) was measured from 0.25...
journal_title:Expert opinion on drug delivery
pub_type: 杂志文章
doi:10.1517/17425247.2015.1031216
更新日期:2015-07-01 00:00:00
abstract:INTRODUCTION:Topical drug delivery is a challenging area with many advantages such as avoidance of first passage effect, stabilization of blood concentrations and attainment of local therapeutic effect with fewer side effects. Despite all these advantages, topical drug delivery remains limited to few molecules, since s...
journal_title:Expert opinion on drug delivery
pub_type: 杂志文章,评审
doi:10.1080/17425247.2016.1182489
更新日期:2016-08-01 00:00:00
abstract:IMPORTANCE OF THE FIELD:Since the 1950s, ultrasonic nebulizers have played an important role in pulmonary drug delivery. As the process in which aerosol droplets are generated is independent and does not require breath-actuation, ultrasonic nebulizers, in principle, offer the potential for instantaneously fine-tuning t...
journal_title:Expert opinion on drug delivery
pub_type: 杂志文章,评审
doi:10.1517/17425247.2010.485608
更新日期:2010-06-01 00:00:00
abstract:OBJECTIVES:This study focuses on the development of amlodipine bilayer buccal tablets of hydroxypropyl methylcellulose (HPMC) matrix system containing polyacrylate polymer (Carbopol(®))/β-cyclodextrin as the drug layer and ethylcellulose as the non-swellable backing layer, and their biointerfacial phenomena. METHODS:T...
journal_title:Expert opinion on drug delivery
pub_type: 杂志文章
doi:10.1517/17425247.2016.1154038
更新日期:2016-01-01 00:00:00
abstract:INTRODUCTION:Lymphatic vessels are the preferential route of most solid tumors to spread their metastases in the body. The onset of metastatic nests in draining lymph nodes (LNs) are a significant indicator of cancer progression and a dismaying sign of worsen staging. Therefore, the individuation and elimination of can...
journal_title:Expert opinion on drug delivery
pub_type: 杂志文章,评审
doi:10.1080/17425247.2018.1446937
更新日期:2018-05-01 00:00:00
abstract::FlexTouch® (FT) is a new prefilled insulin pen with the unique characteristic of no extendable push button at any dose setting and consequently a low activation force. Its technical features along with health care professionals' and patients' preferences in comparison to other traditionally used devices for insulin de...
journal_title:Expert opinion on drug delivery
pub_type: 社论
doi:10.1517/17425247.2014.894505
更新日期:2014-05-01 00:00:00
abstract:INTRODUCTION:Development of efficient in vivo delivery systems remains a major challenge en route to clinical application of antisense technology, including RNA-cleaving molecules such as deoxyribozymes (DNAzymes). The mechanisms of oligonucleotide uptake and trafficking are clearly dependent on cell type and the type ...
journal_title:Expert opinion on drug delivery
pub_type: 杂志文章,评审
doi:10.1080/17425247.2017.1266326
更新日期:2017-09-01 00:00:00
abstract:INTRODUCTION:Viral and non-viral vectors have been used as methods of delivery in gene therapy for many CNS diseases. Currently, viral vectors such as adeno-associated viruses (AAV), retroviruses, lentiviruses, adenoviruses and herpes simplex viruses (HHV) are being used as successful vectors in gene therapy at clinica...
journal_title:Expert opinion on drug delivery
pub_type: 杂志文章,评审
doi:10.1080/17425247.2016.1188802
更新日期:2016-10-01 00:00:00
abstract::The pressurised metered-dose inhaler (pMDI) has now been available for 50 years. Once regarded as an inefficient and difficult-to-use device, the technology has evolved significantly over the last few years, particularly since the introduction of novel formulations containing hydrofluoroalkane (HFA) propellants. Many ...
journal_title:Expert opinion on drug delivery
pub_type: 历史文章,杂志文章,评审
doi:10.1517/17425247.4.3.215
更新日期:2007-05-01 00:00:00
abstract::Introduction: Sativex® spray is clinically utilized to deliver delta9-tetrahydrocannabinol and cannabidiol to oral mucosa for systemic absorption. We challenge the consensus that the mechanism of absorption following the oro-mucosal application occurs via the buccal tissue. Areas covered: Correctness of the consensus ...
journal_title:Expert opinion on drug delivery
pub_type: 杂志文章,评审
doi:10.1080/17425247.2019.1653852
更新日期:2019-10-01 00:00:00
abstract::Directly delivering liquid using direct current power was a dream for 40 years. Now, the electrokinetic pump can accomplish it. This review reports recent developments in microfabricated electrokinetic pump technologies and their applications, and also discusses the electrophoresis pump and elctroosmotic pump, as well...
journal_title:Expert opinion on drug delivery
pub_type: 杂志文章,评审
doi:10.1517/17425247.4.2.119
更新日期:2007-03-01 00:00:00
abstract:INTRODUCTION:Overexpression of VEGF has been identified to be associated with many pathologic processes such as tumors and retinopathy. Inhibiting uncontrolled growth of VEGF is a promising strategy to treat these diseases. Currently small molecule inhibitors and monoclonal antibodies are the primary treatment. However...
journal_title:Expert opinion on drug delivery
pub_type: 杂志文章,评审
doi:10.1517/17425247.2014.926886
更新日期:2014-09-01 00:00:00
abstract:INTRODUCTION:The renaissance in drug delivery research during the past decade led to several new approaches toward vaccine development. Transdermal immunization (TI) is a promising modality with both practical and immunological merits. Compared with conventional routes of administration, this needle-free delivery appro...
journal_title:Expert opinion on drug delivery
pub_type: 杂志文章,评审
doi:10.1517/17425247.2013.746660
更新日期:2013-02-01 00:00:00
abstract:IMPORTANCE OF THE FIELD:Recently, there has been substantial progress in the development of integrin targeted pharmaceuticals and drug delivery systems. Integrin is an important member in the cell adhesion molecule family, which is involved in regulation of complex biological conditions, from keeping normal physiologic...
journal_title:Expert opinion on drug delivery
pub_type: 杂志文章,评审
doi:10.1517/17425240903468696
更新日期:2010-02-01 00:00:00
abstract:IMPORTANCE OF THE FIELD:Efficient systemic delivery of low-molecular-mass therapeutics to neuronal tissue remains a central issue not only to drug development but also to the chronic treatment of a range of neurodegenerative disorders. AREAS COVERED IN THIS REVIEW:This review discusses the potential of using RNA inter...
journal_title:Expert opinion on drug delivery
pub_type: 杂志文章,评审
doi:10.1517/17425247.2010.490554
更新日期:2010-07-01 00:00:00
abstract::Background: Atopic dermatitis is a chronic inflammatory skin disease that remarkably affects the quality-of-life of patients. Chamomile oil is used to treat skin inflammations. We evaluated the efficacy of chamomile oil and nanoemulgel formulations as a natural alternative therapeutic option for atopic dermatitis.Rese...
journal_title:Expert opinion on drug delivery
pub_type: 杂志文章
doi:10.1080/17425247.2020.1699054
更新日期:2020-01-01 00:00:00
abstract:OBJECTIVE:The aim of this study was to improve the drug loading (DL) and stability of clarithromycin (CLA)-loaded liposomes, and reduce the irritation caused by intravenous administration of CLA. METHODS:A CLA-cholesteryl hemisuccinate (CHEMS) ion pair (CIP) was prepared by the solvent evaporation method and confirmed...
journal_title:Expert opinion on drug delivery
pub_type: 杂志文章
doi:10.1517/17425247.2016.1123247
更新日期:2016-01-01 00:00:00
abstract:OBJECTIVES:To develop orodispersible films (ODF) based on hydrophobic polymers with higher stability to ordinary environmental humidity conditions without compromising their fast disintegration time. METHODS:A quality by design approach was applied to screen three different formulations each one based on a different h...
journal_title:Expert opinion on drug delivery
pub_type: 杂志文章
doi:10.1080/17425247.2016.1218458
更新日期:2016-10-01 00:00:00
abstract::Many agents used to treat cancer are toxic to normal tissues. Thus, treatments delivering drug specifically to tumour, while minimising exposure to normal tissue, may be advantageous over non-targeted treatments. The exquisite specificity of the immune system has been used successfully to help develop targeted antican...
journal_title:Expert opinion on drug delivery
pub_type: 杂志文章,评审
doi:10.1517/17425247.5.1.87
更新日期:2008-01-01 00:00:00
abstract:INTRODUCTION:Transportation of the nutrients and other substances from the blood to the brain is selectively controlled by the brain capillary endothelial cells that form a restrictive barrier, so-called blood-brain barrier (BBB). Currently, there is no unimpeachable approach to overcome the BBB obstructiveness because...
journal_title:Expert opinion on drug delivery
pub_type: 杂志文章,评审
doi:10.1080/17425247.2019.1614911
更新日期:2019-06-01 00:00:00
abstract::Introduction: Systemically administered non-viral gene delivery systems face multiple biological barriers that decrease their efficiency. These systems are rapidly cleared from the circulation and sufficient concentrations do not accumulate in diseased tissues. A number of targeting strategies can be used to provide f...
journal_title:Expert opinion on drug delivery
pub_type: 杂志文章,评审
doi:10.1080/17425247.2019.1656196
更新日期:2019-10-01 00:00:00
abstract:OBJECTIVES:Clinical translation of siRNA therapeutics has been severely limited due to the lack of stable and sustained siRNA delivery systems. Furthermore, when nanocarrier systems with siRNA are administered systemically to treat diseases, insufficient doses reach the target tissue. Here we report the successful deve...
journal_title:Expert opinion on drug delivery
pub_type: 杂志文章
doi:10.1080/17425247.2018.1518426
更新日期:2018-10-01 00:00:00