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Brandon L Greene et al.
Journal of the American Chemical Society, 134(27), 11108-11111 (2012-06-22)
We report photocatalytic H(2) production by hydrogenase (H(2)ase)-quantum dot (QD) hybrid assemblies. Quenching of the CdTe exciton emission was observed, consistent with electron transfer from the quantum dot to H(2)ase. GC analysis showed light-driven H(2) production in the presence of
Yongzhen Xia et al.
Applied and environmental microbiology, 78(9), 3286-3297 (2012-02-22)
Advenella mimigardefordensis strain DPN7(T) was genetically modified to produce poly(3-mercaptopropionic acid) (PMP) homopolymer by exploiting the recently unraveled process of 3,3'-dithiodipropionic acid (DTDP) catabolism. Production was achieved by systematically engineering the metabolism of this strain as follows: (i) deletion of
Bei-Bei Cao et al.
Brain, behavior, and immunity, 27(1), 80-90 (2012-10-11)
Our previous work has shown that the cerebellar fastigial nucleus (FN) is involved in modulation of lymphocyte function. Herein, we investigated effect of FN γ-aminobutyric acid (GABA)-ergic projections to the hypothalamus on lymphocytes to understand pathways and mechanisms underlying cerebellar
Celeste R Brennecka et al.
Journal of neurosurgery, 119(1), 228-238 (2013-04-09)
Over the past 20 years, endovascular embolization has become the preferred method of treating cerebral aneurysms. While there are many embolic devices on the market, none is ideal. In this study the authors investigated the use of a liquid-to-solid gelling
Jing Wang et al.
Talanta, 89, 422-426 (2012-01-31)
Aiming to find an alternative electrochemiluminescence (ECL) quenching route of high efficiency, biocatalytic precipitation (BCP) was firstly coupled with ECL for investigating its insulating effect on ECL. Experimental data revealed that an insulating layer could be formed via BCP onto
Zuzana Bubelová et al.
Journal of environmental science and health. Part. B, Pesticides, food contaminants, and agricultural wastes, 50(11), 797-808 (2015-09-12)
The aim of this study was to evaluate the combined effect of temperature (10, 20 and 37°C), pH (4, 5, 6, 7 and 8), and NaCl content (0, 1, 3, 4, 5 and 6% w/v) on the growth and putrescine
Yoshikazu Ishii et al.
Antimicrobial agents and chemotherapy, 54(9), 3625-3629 (2010-07-08)
ME1071, a maleic acid derivative, is a novel specific inhibitor for metallo-beta-lactamases (MBL). In this study, the potentiation of ME1071 in combination with several beta-lactams was evaluated using MBL-producing Pseudomonas aeruginosa isolates. The rates of susceptibility of MBL producers to
Uma M Bhalerao et al.
Colloids and surfaces. B, Biointerfaces, 125, 151-159 (2014-12-09)
Herein we report the in-vitro controlled release properties of 1, 3, 5-trisubstituted-2-pyrazolines through Layer-by-Layer (LbL) self assembled thin films fabricated from chitosan and heparin sodium salt as biocompatible polyelectrolytes. This study was carried out as a preliminary step towards the
Yakup Aykut et al.
ACS applied materials & interfaces, 4(8), 3837-3845 (2012-07-18)
We report on the microstructural crystal phase transformation of electrospun TiO(2) nanofibers generated via sol-gel electrospinning technique, and the incorporation of as-synthesized CdSe quantum dots (QDs) to different phases of TiO(2) nanofibers (NFs) via bifunctional surface modification. The effect of
Mao Shen et al.
Nanoscale research letters, 9(1), 558-558 (2014-10-21)
In this paper, we investigated the functional imaging properties of magnetic microspheres composed of magnetic core and CdTe quantum dots in the silica shell functionalized with folic acid (FA). The preparation procedure included the preparation of chitosan-coated Fe3O4 nanoparticles (CS-coated
Oliva M Primera-Pedrozo et al.
Nanoscale, 4(4), 1312-1320 (2012-01-26)
An aqueous route of synthesis is described for rapid synthesis of lead selenide quantum dots (PbSe QDs) at room temperature in an attempt to produce water-soluble and stable nanocrystals. Several thiol-ligands, including thioglycolic acid (TGA), thioglycerol (TGC), 3-mercaptopropionic acid (MPA)
D Kutlán et al.
Journal of chromatography. A, 949(1-2), 235-248 (2002-05-10)
A comprehensive evaluation of papers dealing with the HPLC quantitation of amines as o-phthaldialdehyde (OPA) derivatives has been given and discussed in details. The stability and characteristics of selected representatives of mono [methyl-, ethyl-, n-/isopropyl, n-/isobutyl-, tert.-butyl-, sec.-butyl-, isoamyl amines
Zhanxi Fan et al.
Nature communications, 6, 6571-6571 (2015-03-15)
Conventionally, the phase transformation of inorganic nanocrystals is realized under extreme conditions (for example, high temperature or high pressure). Here we report the complete phase transformation of Au square sheets (AuSSs) from hexagonal close-packed (hcp) to face-centered cubic (fcc) structures
Patrick R Brown et al.
ACS nano, 8(6), 5863-5872 (2014-05-16)
The electronic properties of colloidal quantum dots (QDs) are critically dependent on both QD size and surface chemistry. Modification of quantum confinement provides control of the QD bandgap, while ligand-induced surface dipoles present a hitherto underutilized means of control over
S Sofia M Rodrigues et al.
Chemphyschem : a European journal of chemical physics and physical chemistry, 16(9), 1880-1888 (2015-04-25)
Immobilization of quantum dots (QDs) onto solid supports could improve their applicability in the development of sensing platforms and solid-phase reactors by allowing the implementation of reusable surfaces and the execution of repetitive procedures. As the reactivity of QDs relies
Alan L Pehrson et al.
Psychopharmacology, 225(1), 31-39 (2012-07-17)
Attention dysfunction is the hallmark of cognitive deficits associated with major psychiatric illnesses including schizophrenia. Cognitive deficits of schizophrenia have been attributed to reduced function of the N-methyl-D-aspartate (NMDA) receptor or reduced expression of the gamma-aminobutyric acid (GABA)-synthesizing enzyme glutamic
Justin D Besant et al.
Nature communications, 6, 6978-6978 (2015-04-23)
Diagnosis of disease outside of sophisticated laboratories urgently requires low-cost, user-friendly devices. Disposable, instrument-free testing devices are used for home and physician office testing, but are limited in applicability to a small class of highly abundant analytes. Direct, unambiguous visual
Meng-Nan Ma et al.
Analytical chemistry, 87(22), 11389-11397 (2015-10-13)
A highly sensitive electrochemiluminescent (ECL) aptasensor was constructed using semicarbazide (Sem) as co-reaction accelerator to promote the ECL reaction rate of CdTe quantum dots (CdTe QDs) and the co-reactant of peroxydisulfate (S2O8(2-)) for boosting signal amplification. The co-reaction accelerator is
Jaco Franken et al.
Applied microbiology and biotechnology, 99(15), 6377-6389 (2015-04-09)
Industrial synthesis of L-carnitine is currently performed by whole-cell biotransformation of industrial waste products, mostly D-carnitine and cronobetaine, through specific bacterial species. No comparable system has been established using eukaryotic microorganisms, even though there is a significant and growing international
Siyi Hu et al.
The Analyst, 139(18), 4681-4690 (2014-07-24)
Biofunctionalized quantum dots (QDs), especially protein-coated QDs, are known to be useful targeted fluorescent labels for cellular and deep-tissue imaging. These nanoparticles can also serve as efficient energy donors in fluorescence resonance energy transfer (FRET) binding assays for the multiplexed
Estefanía de Munck et al.
Environmental toxicology and pharmacology, 39(3), 1232-1245 (2015-05-24)
Amyotrophic lateral sclerosis (ALS) is a neurodegenerative disease characterized by progressive muscle paralysis that reflects the motoneurons' degeneration. Several studies support the relationship between β-N-methylamino-l-alanine (l-BMAA), a neurotoxic amino acid produced by cyanobacteria and diatoms, and the sporadic occurrence of
Ramesh Chennupati et al.
PloS one, 9(7), e102264-e102264 (2014-07-18)
Argininosuccinate synthetase (ASS) is essential for recycling L-citrulline, the by-product of NO synthase (NOS), to the NOS substrate L-arginine. Here, we assessed whether disturbed arginine resynthesis modulates endothelium-dependent vasodilatation in normal and diabetic male mice. Endothelium-selective Ass-deficient mice (Assfl/fl/Tie2Cretg/- = Ass-KOTie2) were
Feng Jiang et al.
Langmuir : the ACS journal of surfaces and colloids, 28(36), 12931-12940 (2012-08-14)
A strong ligand effect was observed for the aqueous-phase growth of ZnSe quantum dots (QDs) in the Ostwald ripening (OR) stage. The QDs were made by injecting Se monomer at room temperature followed by a ramp to 100 °C. The
Wafa M Elbjeirami
Kidney international, 80(11), 1115-1117 (2011-11-16)
Interstitial fibrosis plays a major role in the progression of renal diseases. Peroxisome proliferator-activated receptor-α (PPAR-α) ligands are increasingly explored for their potential to reverse or halt tubulointerstitial fibrosis. This Commentary discusses new findings by Boor et al., who show
István Hornyák et al.
Free radical research, 46(2), 214-225 (2011-12-14)
S-nitrosothiol (RSNO) solutions represent a valuable source of nitric oxide and could be used as topical vasodilators, but their fast decomposition rate poses a serious obstacle to their potentially widespread therapeutic use. Our aim was to characterize and quantify the
Zoltan Nemeth et al.
PloS one, 10(8), e0135498-e0135498 (2015-08-28)
Pericardial fluid (PF) contains several biologically active substances, which may provide information regarding the cardiac conditions. Nitric oxide (NO) has been implicated in cardiac remodeling. We hypothesized that L-arginine (L-Arg) precursor of NO-synthase (NOS) and asymmetric dimethylarginine (ADMA), an inhibitor
Md Ashaduzzaman et al.
Biosensors & bioelectronics, 73, 100-107 (2015-06-10)
Regeneration is a key goal in the design of immunosensors. In this study, we report the temperature-regulated interaction of N-isopropylacrylamide (PNIPAAm) functionalised cardiac troponin T (cTnT) with anti-cTnT. Covalently bonded PNIPAAm on an anti-cTnT bioelectrode showed on/off-switchability, regeneration capacity and
Rijun Gui et al.
Talanta, 94, 295-300 (2012-05-23)
Rhodamine 6G (R6G) and 3-mercaptopropionic acid (MPA) capped-CdTe quantum dots (QDs) were conjugated by electrostatic interactions in aqueous solution. The R6G-QDs conjugate was utilized as a photoluminescence (PL) ratiometric sensor for the detection of glutathione (GSH). In this method, intentional
Yulong Jin et al.
The Analyst, 138(18), 5479-5485 (2013-07-28)
A novel quartz crystal microbalance (QCM) sensor for rapid, highly selective and sensitive detection of copper ions was developed. As a signal amplifier, gold nanoparticles (Au NPs) were self-assembled onto the surface of the sensor. A simple dip-and-dry method enabled
Qijin Wan et al.
Colloids and surfaces. B, Biointerfaces, 104, 181-185 (2013-01-15)
In order to construct a three-dimensional electrode, in situ electrochemical deposition of gold nanoparticles onto a gold electrode coated with a self-assembled monolayer of 3-mercaptopropionic acid (Au NP/MPA/Au) was conducted. Horseradish peroxidase (HRP) was then immobilized into this three-dimensional electrode
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