Abstract:
:Natural enzyme mimics have attracted considerable attention due to leakage of enzymes and their easy denaturation during their storage and immobilization procedure. Here in this study, for the first time, a new iron oxide hydroxide, ferrihydrite - Fe1.44O0.32 (OH) 3.68 magnetic nanoparticles were synthesized by bacterial strain named Comamonas testosteroni. The characterization of the produced magnetic nanoparticles was confirmed by transmission electron microscopy (TEM), Fourier-transform spectroscopy (FTIR), X-ray diffraction (XRD), and magnetization hysteresis loops. Further, these extracted nanoparticles were proven to have biogenic magnetic behavior and to exhibit enhanced peroxidase-like activity. It is capable of catalyzing the oxidation of 3, 3', 5, 5'-Tetramethylbenzidine (TMB) by H2O2 to produce blue color (typical color reactions). Catalysis was examined to follow Michaelis-Menton kinetics and the good affinity to both H2O2 and TMB. The Km value of the Fe1.44O0.32 (OH) 3.68 with H2O2 and TMB as the substrate was 0.0775 and 0.0155 mM, respectively, which were lower than that of the natural enzyme (HRP). Experiments of electron spin resonance (ESR) spectroscopy proved that the BMNPs could catalyze H2O2 to produce hydroxyl radicals. As a new peroxidase mimetic, the BMNPs were exhibited to offer a simple, sensitive, and selective colorimetric method for determination of H2O2 and glucose and efficiently catalyze the detection of glucose in real blood samples.
journal_name
Biomed Res Intjournal_title
BioMed research internationalauthors
Ahmed A,Abagana A,Cui D,Zhao Mdoi
10.1155/2019/7127869subject
Has Abstractpub_date
2019-03-28 00:00:00pages
7127869eissn
2314-6133issn
2314-6141journal_volume
2019pub_type
杂志文章abstract:CONTEXT:The 7th (2009) edition of the AJCC melanoma staging system incorporates tumor (Breslow) thickness, MR, and ulceration in stratifying T1 primary melanomas. Compared to the prior 6th (2001) edition, MR has replaced CL for thin melanomas. OBJECTIVE:We sought to identify and report differences of the classificatio...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2013/898719
更新日期:2013-01-01 00:00:00
abstract::A series of amides derived from vanillic acid were obtained by coupling reactions using PyBOP ((Benzotriazol-1-yloxy)tripyrrolidinophosphonium hexafluorophosphate) and DCC (Dicyclohexylcarbodiimide) coupling reagents. These were submitted to biological evaluation for species of Candida, Staphylococcus, and Pseudomonas...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2019/9209676
更新日期:2019-04-15 00:00:00
abstract::Hepatocellular carcinoma (HCC) is a lethal malignancy with poor prognosis and limited treatment options. Transarterial chemoembolization (TACE) using chemotherapy agents-doxorubicin and cisplatin-is an accepted treatment option for locally advanced hepatocellular carcinoma. In the current study, we analyzed the expres...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2015/649750
更新日期:2015-01-01 00:00:00
abstract:BACKGROUND AND OBJECTIVES:Parents' birth weight acts as a predictor for the descendant birth weight, with the correlation more strongly transmitted through maternal line. The present research aims to study the correlation between the child's low or increased birth weight, the mother's birth weight, and maternal conditi...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2015/615034
更新日期:2015-01-01 00:00:00
abstract::An FDA-regulated, prescription medical food (Fosteum; 27 mg natural genistein, 200 IU cholecalciferol, 20 mg citrated zinc bisglycinate (4 mg elemental zinc) per capsule) and an over-the-counter (OTC) supplement (Citracal Plus Bone Density Builder; 27 mg synthetic genistein, 600 mg elemental calcium (calcium citrate),...
journal_title:BioMed research international
pub_type: 杂志文章,随机对照试验
doi:10.1155/2013/273498
更新日期:2013-01-01 00:00:00
abstract::The present study showed that oral mushroom beta-glucan treatment significantly increased IFN-γ mRNA expression but significantly reduced COX-2 mRNA expression within the lung. For LLC tumor model, oral Ganoderma lucidum or Antrodia camphorata polysaccharides treatments significantly reduced TGF-β production in serum....
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2015/604385
更新日期:2015-01-01 00:00:00
abstract:BACKGROUND:This study aimed to analyze differences in necrotic changes between cortical and cancellous bone in resection margins after segmental mandibulectomy for advanced mandibular osteoradionecrosis. METHODS:Anteroposterior bone specimens from eleven patients who underwent segmental mandibulectomy with simultaneou...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2017/3125842
更新日期:2017-01-01 00:00:00
abstract:Background:There is little data available on HBV infection and mother-to-child transmission (MTCT) in Vietnam. Objective:This study is aimed at assessing the prevalence of HBV infection and the current situation of MTCT in Haiphong, Vietnam. Methods:A transversal survey of 1721 pregnant women followed by an observati...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2020/4747965
更新日期:2020-08-20 00:00:00
abstract::Numerous studies have reported that mesenchymal stem cells (MSCs) can ameliorate neurological deficits in ischemic stroke models. Among the various hypotheses that have been suggested to explain the therapeutic mechanism underlying these observations, neurogenesis is thought to be critical. To enhance the therapeutic ...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2014/129145
更新日期:2014-01-01 00:00:00
abstract::Densitometry data generated for Western blots are commonly used to compare protein abundance between samples. In the last decade, it has become apparent that assumptions underpinning these comparisons are often violated in studies reporting Western blot data in the literature. These violations can lead to erroneous in...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2019/5214821
更新日期:2019-01-21 00:00:00
abstract::This study investigated the influence of gene-gene and gene-environment interactions on the risk of developing asbestosis. The study comprised 262 cases with asbestosis and 265 controls with no asbestos-related disease previously studied for MnSOD, ECSOD, CAT, GSTT1, GSTM1, GSTP1, and iNOS polymorphisms. Data on cumul...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2013/405743
更新日期:2013-01-01 00:00:00
abstract::This prospective randomized study is to evaluate the locoregional failure and its impact on survival by comparing involved field radiotherapy (IFRT) with elective nodal irradiation (ENI) in combination with concurrent chemotherapy for locally advanced non-small cell lung cancer. It appears that higher dose could be de...
journal_title:BioMed research international
pub_type: 杂志文章,随机对照试验
doi:10.1155/2013/371819
更新日期:2013-01-01 00:00:00
abstract::The small nucleolar RNA host gene 12 (SNHG12) has been reported to play an important role in the tumorigenesis and progression of PCa, but the functional underlying mechanism has not been studied clearly. We detected the expression level of SNHG12 in PCa tissues and matched adjacent normal tissues that were collected ...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2020/8812923
更新日期:2020-12-22 00:00:00
abstract::Aim. The aim of the study was to compare the incidence of "de novo" overactive bladder (OAB) after sling surgeries and Burch procedure and to analyze the effect of the preoperative bladder volume on the incidence of this condition. Methods. This prospective trial included 290 female patients with stress urinary incont...
journal_title:BioMed research international
pub_type: 临床试验,杂志文章
doi:10.1155/2019/9515242
更新日期:2019-02-12 00:00:00
abstract::Pulmonary arterial hypertension (PAH) is a severe and progressive disease, a key feature of which is pulmonary vascular remodeling. Growth factors, cytokines, and lipid mediators are involved in this remodeling process. Recent reports suggest that the peroxisome proliferator-activated receptors (PPARs) play important ...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2013/903947
更新日期:2013-01-01 00:00:00
abstract::We have developed a new "drug" and approach that appear to be effective in reducing arterial age. This "drug" represents a low, subtherapeutic dose of statin and sartan and particularly their low-dose combination. The improvement of arterial wall characteristics, also reflecting in a decrease of arterial age, was achi...
journal_title:BioMed research international
pub_type: 杂志文章,评审
doi:10.1155/2015/235709
更新日期:2015-01-01 00:00:00
abstract::Astrocytic impairment is a pathologic feature of neuromyelitis optica spectrum disorder (NMOSD). S100B and glial fibrillary acidic protein (GFAP) are the two most commonly used astrocytic markers. The aim of this study was to evaluate whether CSF-S100B could serve as a marker of NMOSD. We enrolled 49 NMOSD patients [2...
journal_title:BioMed research international
pub_type: 临床试验,杂志文章
doi:10.1155/2018/5381239
更新日期:2018-10-22 00:00:00
abstract::Purpose. We aimed to study long-term outcome after pulmonary vein isolation (PVI) guided by remote magnetic navigation (RMN) and provided comparative data to outcome after manual navigation (MAN). Methods. Three hundred thirty-six patients with symptomatic paroxysmal AF underwent PVI by irrigated point-by-point radiof...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2017/6323729
更新日期:2017-01-01 00:00:00
abstract:Objective:To analyze the ten-year surgical outcomes and postoperative complications of French-Door laminoplasty (FDL) in the management of multilevel cervical spondylotic myelopathy (MCSM) and analyze the prognostic factors for FDL in treating MCSM. Methods:64 patients with MCSM, who were operated by FDL, were include...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2020/3627071
更新日期:2020-05-06 00:00:00
abstract::The utility of various regions of the ribosomal repeat unit for phylogenetic analysis was examined in 16 species representing four families, nine genera, and two orders of the subclass Copepoda (Crustacea). Fragments approximately 2000 bp in length containing the ribosomal DNA (rDNA) 18S and 28S gene fragments, the 5....
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2014/926342
更新日期:2014-01-01 00:00:00
abstract::The craniofacial complex is the billboard of sorts containing information about sex, health, ancestry, kinship, genes, and environment. A thorough knowledge of the genes underlying craniofacial morphology is fundamental to understanding craniofacial biology and evolution. These genes can also provide an important foun...
journal_title:BioMed research international
pub_type: 杂志文章,评审
doi:10.1155/2016/3054578
更新日期:2016-01-01 00:00:00
abstract::Bone integrity abnormality and imbalance between bone formation by osteoblasts and bone resorption by osteoclasts are known to result in metabolic bone diseases such as osteoporosis. Silymarin-rich milk thistle extract (MTE) and its component silibinin enhanced alkaline phosphatase activity of osteoblasts but reduced ...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2013/919374
更新日期:2013-01-01 00:00:00
abstract::We review the recent literature concerning the efficiency of antimicrobial photodynamic inactivation toward various microbial species in planktonic and biofilm cultures. The review is mainly focused on biofilm-growing microrganisms because this form of growth poses a threat to chronically infected or immunocompromised...
journal_title:BioMed research international
pub_type: 杂志文章,评审
doi:10.1155/2013/150653
更新日期:2013-01-01 00:00:00
abstract:Purpose:To study the variations in corneal clinical biomechanical parameters (CCBP) and corneal geometrical parameters of rabbit in relation to age. Methods:Rabbits aged 3, 7, 12, 18, and 24 months were enrolled. Each eye of the rabbits was tested with Ocular Response Analyzer (ORA), Optical Coherence Tomography (OCT)...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2017/3684971
更新日期:2017-01-01 00:00:00
abstract::Viral infections result in millions of deaths in the world today. A thorough analysis of virus-host interactomes may reveal insights into viral infection and pathogenic strategies. In this study, we presented a landscape of virus-host interactomes based on protein domain interaction. Compared to the analysis at protei...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2014/867235
更新日期:2014-01-01 00:00:00
abstract:INTRODUCTION:Tuberculosis is still one of the most important health problems in developing countries and increasing drug resistance is the main concern for its treatment. This study was designed to characterize the drug resistant Mycobacterium tuberculosis isolated from patients suffering from pulmonary tuberculosis in...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2015/747085
更新日期:2015-01-01 00:00:00
abstract::Sulfated polysaccharides (GSP) were isolated from the cloned Grateloupia filicina which was cultured in Jiaozhou Bay, Qingdao, China. The yield of GSP was 15.75%. The total sugar and sulfate were 40.90 and 19.89%, respectively. And the average molecular weight was 11.7 KDa. The results of neutral sugar analysis showed...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2015/612352
更新日期:2015-01-01 00:00:00
abstract::Mycobacterium bovis causes classic bovine tuberculosis, a zoonosis which is still a concern in Africa. Biofilm forming ability of two Mycobacterium bovis strains was assessed on coupons of cement, ceramic, or stainless steel in three different microbiological media at 37°C with agitation for 2, 3, or 4 weeks to determ...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2014/210165
更新日期:2014-01-01 00:00:00
abstract::This paper presents an ultrasound simulation model for pulsatile blood flow, modulated by the motion of a stenosed vessel wall. It aims at generating more realistic ultrasonic signals to provide an environment for evaluating ultrasound signal processing and imaging and a framework for investigating the behaviors of bl...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2016/8502873
更新日期:2016-01-01 00:00:00
abstract:PURPOSE:To develop a dual energy imaging method to improve the accuracy of electron density measurement with a cone-beam CT (CBCT) device. MATERIALS AND METHODS:The imaging system is the XVI CBCT system on Elekta Synergy linac. Projection data were acquired with the high and low energy X-ray, respectively, to set up a...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2015/858907
更新日期:2015-01-01 00:00:00