Abstract:
:Modified poly(aspartic acid)/poly(vinyl alcohol) interpenetrating polymer network (KPAsp/PVA IPN) hydrogel for drug controlled release was synthesized by a simple one-step method in aqueous system using poly(aspartic acid) grafting 3-aminopropyltriethoxysilane (KH-550) and poly(vinyl alcohol) (PVA) as materials. The hydrogel surface morphology and composition were characterized by Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). The thermal stability was analyzed by thermogravimetric analysis (TGA). The swelling properties and pH, temperature, and salt sensitivities of KPAsp, KPAsp/PVA semi-interpenetrating polymer network (semi-IPN), and KPAsp/PVA IPN hydrogels were also investigated. All of the three hydrogels showed ampholytic pH-responsive properties, and swelling behavior was also extremely sensitive to the temperature, ionic strength, and cationic species. Finally, the drug controlled release properties of the three hydrogels were evaluated and results indicated that three hydrogels could control drug release by external surroundings stimuli. The drug controlled release properties of KPAsp/PVA IPN hydrogel are the most outstanding, and the correlative measured release profiles of salicylic acid at 37°C were 32.6 wt% at pH = 1.2 (simulated gastric fluid) and 62.5 wt% at pH = 7.4 (simulated intestinal fluid), respectively. These results indicated that KPAsp/PVA IPN hydrogels are a promising carrier system for controlled drug delivery.
journal_name
Biomed Res Intjournal_title
BioMed research internationalauthors
Lu J,Li Y,Hu D,Chen X,Liu Y,Wang L,Zhao Ydoi
10.1155/2015/236745subject
Has Abstractpub_date
2015-01-01 00:00:00pages
236745eissn
2314-6133issn
2314-6141journal_volume
2015pub_type
杂志文章abstract:PURPOSE:To identify the Acinetobacter baumannii infection among transfusion dependent thalassemia patients. METHODS:A quantitative approach was employed to assess Acinetobacter baumannii infection in transfusion dependent thalassemia patients. Samples were collected from 916 patients, which have shown bacterial growth...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2017/2351037
更新日期:2017-01-01 00:00:00
abstract::Candida krusei is osmotolerant yeast used for the production of glycerol. Addition of osmolyte such as NaCl into culture medium can increase the production of glycerol from glucose, but osmolytes may burden the glycerol separation. A coencapsulation method was suggested to create local extracellular hyperosmotic stres...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2013/467263
更新日期:2013-01-01 00:00:00
abstract:Objective:To determine if increasing variability of blood pressure influences determination of cerebral autoregulation. Methods:A prospective observational study was performed at the ICU of a university hospital in the Netherlands. 13 comatose patients after cardiac arrest underwent baseline and intervention (tilting ...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2018/8153241
更新日期:2018-06-06 00:00:00
abstract:Objectives:Magnetic resonance imaging (MRI) and in particular diffusion-weighted imaging (DWI) have been broadly proven to be the reference imaging method to discriminate between cholesteatoma and noncholesteatomatous middle ear lesions, especially when high tissue specificity is required. The aim of this study is to d...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2018/7945482
更新日期:2018-04-24 00:00:00
abstract::Nonalcoholic fatty liver disease (NAFLD) is the most frequent cause of chronic liver disease. NAFLD encompasses a wide range of pathologies, from simple steatosis to steatosis with inflammation to fibrosis. The pathogenesis of NAFLD progression has not been completely elucidated, and different liver cells could be imp...
journal_title:BioMed research international
pub_type: 杂志文章,评审
doi:10.1155/2015/768071
更新日期:2015-01-01 00:00:00
abstract::The quantitative and reproducible analysis of the standard body movement in Tai Chi Chuan (TCC) was performed in this study. We aimed to provide a reference of the upper extremities for standardizing TCC practice. Microsoft Kinect was used to record the motion during the practice of TCC. The preparation form and eight...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2018/2538765
更新日期:2018-01-29 00:00:00
abstract:OBJECTIVE:Greater skeletal muscle fat infiltration occurs with age and contributes to numerous negative health outcomes. The primary purpose was to determine whether intermuscular adipose tissue (IMAT) can be influenced by an exercise intervention and if a greater reduction in IMAT occurs with eccentric versus traditio...
journal_title:BioMed research international
pub_type: 杂志文章,随机对照试验
doi:10.1155/2014/398960
更新日期:2014-01-01 00:00:00
abstract::Arrhythmia is a disease that is caused by abnormal electrical activity in the heart rate or rhythm. It is the major cause of cardiovascular morbidity and mortality. Although several antiarrhythmic drugs have been used in clinic for decades, their application is often limited by their adverse effects. As a result, natu...
journal_title:BioMed research international
pub_type: 杂志文章,评审
doi:10.1155/2017/4615727
更新日期:2017-01-01 00:00:00
abstract:Objective:The aim of this study was to investigate the respective correlation between the height (H) of a posterior malleolar fracture (PMF) and the involved area (S) of an articular surface and the presence of "die-punch." Methods:Patients with closed posterior malleolar fractures admitted to our hospital from Januar...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2020/2903537
更新日期:2020-07-29 00:00:00
abstract:Background:The aim of this article is to present a short review of noninvasive, nonpharmacological treatment methods used in somatic illnesses that fall under the umbrella of approach called behavioral medicine. Methods:The narrative review method was applied in the study. Science paper databases, including PubMed, ha...
journal_title:BioMed research international
pub_type: 杂志文章,评审
doi:10.1155/2020/5076516
更新日期:2020-11-03 00:00:00
abstract:Background:Open laminectomy has been regarded as the standard surgical procedure for lumbar lateral recess stenosis during the last decades. Although percutaneous endoscopic lumbar decompression has led to successful results comparable with open decompression, its application in LSS with is still challenging and techni...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2018/2601232
更新日期:2018-11-26 00:00:00
abstract::The aims of this work were to evaluate the in vitro and in vivo schistosomicidal properties of the methanolic extract of the aerial parts of Mitracarpus frigidus (MFM) and to determine its HPLC profile. For the in vitro experiment, four pairs of adult worms, obtained from infected mice, were exposed to different conce...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2014/941318
更新日期:2014-01-01 00:00:00
abstract::Human papillomavirus (HPV) is an etiological risk factor for oropharyngeal squamous cell carcinomas (OPSCC). Our study investigates the prevalence, prognostic, and clinicopathologic features of HPV-related oropharyngeal cancer in Northeast China and elucidates the involvement of p16 in the tumorigenesis and progressio...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2018/9594568
更新日期:2018-09-17 00:00:00
abstract::The main aim was to analyse the associations between several physical fitness variables and bone parameters in a sample of elderly people. 129 participants (94 females and 35 males, 76.2 ± 5.4 y) from the EXERNET cohort of Zaragoza (Spain) were included in the study. Physical fitness was assessed using the Senior Fitn...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2020/6930682
更新日期:2020-07-15 00:00:00
abstract::The proper functioning of a hospital computer system is an arduous work for managers and staff. However, inconsistent policies are frequent and can produce enormous problems, such as stolen information, frequent failures, and loss of the entire or part of the hospital data. This paper presents a new method named EMRlo...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2015/542016
更新日期:2015-01-01 00:00:00
abstract::Acute kidney injury (AKI) is associated with an increased risk of developing advanced chronic kidney disease (CKD). Yet, effective interventions to prevent this conversion are unavailable for clinical practice. In this study, we examined the beneficial effects of Tanshinone IIA on renal fibrosis in a mouse model of fo...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2015/867140
更新日期:2015-01-01 00:00:00
abstract::Electrospun scaffolds provide a dense framework of nanofibers with pore sizes and fiber diameters that closely resemble the architecture of native extracellular matrix. However, it generates limited three-dimensional structures of relevant physiological thicknesses. 3D printing allows digitally controlled fabrication ...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2017/6956794
更新日期:2017-01-01 00:00:00
abstract::Neoadjuvant radio(chemo)therapy is increasingly used in rectal cancer and induces a number of morphologic changes that affect prognostication after curative surgery, thereby creating new challenges for surgical pathologists, particularly in evaluating morphologic changes and tumour response to preoperative treatment. ...
journal_title:BioMed research international
pub_type: 杂志文章,评审
doi:10.1155/2015/574540
更新日期:2015-01-01 00:00:00
abstract::The aim of this study was to investigate whether osteopontin (OPN) variants are associated with susceptibility to ankylosing spondylitis (AS) in a Chinese population. Polymorphisms at the 9175th position in exon 7 of OPN and rs17524488 were genotyped using direct sequencing in 186 unrelated AS patients and 188 ethnica...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2018/3458439
更新日期:2018-01-18 00:00:00
abstract::Antipsychotic drugs (APDs) used to treat clinical psychotic syndromes cause a variety of blood dyscrasias. APDs suppress the aggregation of platelets; however, the underlying mechanism remains unknown. We first analyzed platelet aggregation and clot formation in platelets treated with APDs, risperidone, clozapine, or ...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2016/2532371
更新日期:2016-01-01 00:00:00
abstract:Aim:This study aims to evaluate the accuracy of scanned images of 4 clinically used intraoral scanners (CS3600, i500, Trios3, Omnicam) when scanning the surface of full arch models with various kinds of orthodontic brackets in the presence of artificial saliva. Materials and Methods. Four study models were prepared; bo...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2020/2920804
更新日期:2020-02-27 00:00:00
abstract:Objective:Neuroimaging studies revealed the functional reorganization or the structural changes during stroke recovery. However, previous studies did not combine the functional and structural information and the results might be affected by heterogeneous lesion. This study aimed to investigate functional activation-inf...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2017/4345205
更新日期:2017-01-01 00:00:00
abstract::Systemic lupus erythematosus (SLE) is characterized by systemic end-organ damage. We investigated the involvement of IRF5, TLR-7, MECP2, STAT4, and TNFSF4 genes and TNF-α, IFN-γ, IL-2, IL-12, IL-6, and IL-10 cytokines in SLE pathogenesis and in organ damage in Jordanian patients. Blood was collected from 51 patients a...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2019/1703842
更新日期:2019-11-29 00:00:00
abstract:Background:Though there are several prognostic models, there is no protein-related prognostic model. The aim of this study is to identify possible prognostic-related proteins in bladder urothelial carcinoma and to try to predict the prognosis of bladder urothelial carcinoma based on these proteins. Methods:Profile dat...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2020/7147824
更新日期:2020-07-31 00:00:00
abstract:OBJECTIVE:DHA supplementation was compared to nutrition education to increase DHA consumption from fish and DHA fortified foods. DESIGN:This two-part intervention included a randomized double-blind placebo controlled DHA supplementation arm and a nutrition education arm designed to increase intake of DHA from dietary ...
journal_title:BioMed research international
pub_type: 杂志文章,随机对照试验
doi:10.1155/2015/123078
更新日期:2015-01-01 00:00:00
abstract::[This retracts the article DOI: 10.1155/2014/479180.]. ...
journal_title:BioMed research international
pub_type: 撤回出版物
doi:10.1155/2016/4938464
更新日期:2016-01-01 00:00:00
abstract::The aim of the present study is to analyse the secondary bacterial infections in a large group of patients with seasonal influenza A and influenza A(H1N1) pdm09. Patients diagnosed with seasonal influenza A and influenza A(H1N1) pdm09 between 2005 and 2009 were enrolled in the study. Data was retrieved from medical re...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2013/376219
更新日期:2013-01-01 00:00:00
abstract::The use of in vitro metabolism data to predict human clearance has become more significant in the current prediction of large scale drug clearance for all the drugs. The relevant information (in vitro metabolism data and in vivo human clearance values) of thirty-five drugs that satisfied the entry criteria of probe dr...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2015/857327
更新日期:2015-01-01 00:00:00
abstract:Objectives:The aim of this study was to evaluate the influence of ferule and the post type on the fracture strength and stress distribution in premolars. Materials and Methods:Forty human mandibular premolars were decoronated, allocated in four groups, and restored as follows: CPC-NF: cast post-and-core and absence of...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2019/2196519
更新日期:2019-01-03 00:00:00
abstract::Host jump can result in deadly pandemic events when avian influenza A viruses broaden their host specificity and become able to infect mammals, including humans. Haemagglutinin-the major capsid protein in influenza A viruses-is subjected to high rate mutations, of which several occur at its "head": the receptor-bindin...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2018/3870508
更新日期:2018-05-17 00:00:00