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Casper Hyttel Clausen et al.
Scanning, 33(4), 201-207 (2011-04-21)
In this report electrostatic force microscopy (EFM) is used to study different peptide self-assembled structures such as tubes and particles. It is shown that not only geometrical information can be obtained using EFM, but also information about the composition of
Jianmei Wu et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 1006, 167-178 (2015-11-10)
Simultaneous, quantitative determination of intracellular nucleoside triphosphates and other polar metabolites using liquid chromatography with electrospray ionization tandem mass spectrometry (LC-MS/MS) represents a bioanalytic challenge because of charged, highly hydrophilic analytes presented at a large concentration range in a complex
Robin Altman et al.
Biochimica et biophysica acta, 1854(12), 1860-1870 (2015-09-17)
Alzheimer's disease is characterized by the presence of extracellular plaques comprised of amyloid beta (Aβ) peptides. Soluble oligomers of the Aβ peptide underlie a cascade of neuronal loss and dysfunction associated with Alzheimer's disease. Single particle analyses of Aβ oligomers
Aditya Pandey et al.
Biochemistry and cell biology = Biochimie et biologie cellulaire, 92(4), 269-278 (2014-06-20)
G-protein coupled receptors (GPCRs) are inherently dynamic membrane protein modulators of various important cellular signaling cascades. The apelin receptor (AR or APJ) is a class A GPCR involved in numerous physiological processes, implicated in angiogenesis during tumour formation and as
Mohsin Vahid Khan et al.
International journal of biological macromolecules, 70, 606-614 (2014-07-27)
In this study we are reporting the conformational modulation as well as the plausible mechanism of structural perturbation in conalbumin (CA). The overall structure of CA is altered by the change in dielectric constant upon addition of fluoroalcohols (TFE and
Sheng Feng et al.
Acta biomaterialia, 27, 205-213 (2015-09-13)
By electrospinning of polycaprolactone (PCL) solutions containing N-(benzoylthio)benzamide (NSHD1), a H2S donor, fibrous scaffolds with hydrogen sulfide (H2S) releasing capability (H2S-fibers) are fabricated. The resultant microfibers are capable of releasing H2S upon immersion in aqueous solution containing biological thiols under
Denisse Esther Mallaupoma Camarena et al.
Nanomaterials (Basel, Switzerland), 10(12) (2020-12-20)
The development of products for topical applications requires analyses of their skin effects before they are destined for the market. At present, the ban on animal use in several tests makes the search for in vitro models (such as artificial
Hanumantha Rao Balaji Raghavendran et al.
PloS one, 9(8), e104389-e104389 (2014-08-21)
A comparative study on the in vitro osteogenic potential of electrospun poly-L-lactide/hydroxyapatite/collagen (PLLA/HA/Col, PLLA/HA, and PLLA/Col) scaffolds was conducted. The morphology, chemical composition, and surface roughness of the fibrous scaffolds were examined. Furthermore, cell attachment, distribution, morphology, mineralization, extracellular matrix
Eoghan M Cunnane et al.
ACS applied materials & interfaces, 12(24), 26955-26965 (2020-05-23)
Vascular tissue engineering is aimed at developing regenerative vascular grafts to restore tissue function by bypassing or replacing defective arterial segments with tubular biodegradable scaffolds. Scaffolds are often combined with stem or progenitor cells to prevent acute thrombosis and initiate
Angelos Halaris et al.
Journal of psychiatric research, 66-67, 118-126 (2015-05-27)
A pro-inflammatory state and a dysregulation in the tryptophan/kynurenine pathway have been documented in depression. This study examined whether treatment with the SSRI, escitalopram (ESC), could suppress inflammation and favorably shift metabolites of the kynurenine pathway in patients with major
Karin Kipper et al.
Journal of chromatography. A, 1218(45), 8175-8180 (2011-10-05)
Two fluoroalcohols--1,1,1,3,3,3-hexafluoro-2-propanol (HFIP) and 1,1,1,3,3,3-hexafluoro-2-methyl-2-propanol (HFTB)--were evaluated as volatile buffer acids in basic mobile phases for LC-ESI-MS determination of acidic and basic compounds. HFIP and HFTB as acidic buffer components offer interesting possibilities to adjust retention behavior of different analytes
Christina M A P Schuh et al.
Cells, tissues, organs, 200(5), 287-299 (2015-09-16)
Tissue engineering approaches in nerve regeneration search for ways to support gold standard therapy (autologous nerve grafts) and to improve results by bridging nerve defects with different kinds of conduits. In this study, we describe electrospinning of aligned fibrin-poly(lactic-co-glycolic acid)
Maria I Lioudyno et al.
PloS one, 7(4), e35090-e35090 (2012-05-09)
The impact of synthetic amyloid β (1-42) (Aβ(1-42)) oligomers on biophysical properties of voltage-gated potassium channels Kv 1.3 and lipid bilayer membranes (BLMs) was quantified for protocols using hexafluoroisopropanol (HFIP) or sodium hydroxide (NaOH) as solvents prior to initiating the
Min-Hua Chen et al.
Biomedical engineering online, 13, 118-118 (2014-08-21)
The combination of biliary stent with photodynamic and chemotherapy seemed to be a beneficial palliative treatment of unresectable cholangiocarcinoma. However, by intravenous delivery to the target tumor the distribution of the drug had its limitations and caused serious side effect
Frank A Petrigliano et al.
Tissue engineering. Part A, 21(7-8), 1228-1236 (2014-11-22)
The anterior cruciate ligament (ACL) is critical for the structural stability of the knee and its injury often requires surgical intervention. Because current reconstruction methods using autograft or allograft tissue suffer from donor-site morbidity and limited supply, there has been
Li Wang et al.
Biochimica et biophysica acta, 1838(12), 3162-3170 (2014-09-15)
The organic solvent dimethylsulphoxide (DMSO) and 1,1,1,3,3,3-hexafluoro-2-isopropanol (HFIP) have been widely used as a pre-treating agent of amyloid peptides and as a vehicle for water-insoluble inhibitors. These solvents are left in many cases as a trace quantity in bulk and
Hui Wang et al.
Biochemistry, 54(44), 6704-6711 (2015-09-26)
The hormone human islet amyloid polypeptide (hIAPP or amylin) plays a role in glucose metabolism, but forms amyloid in the pancreas in type 2 diabetes (T2D) and is associated with β-cell death and dysfunction in the disease. Inhibitors of islet
Tsung-Lin Tsai et al.
The spine journal : official journal of the North American Spine Society, 14(9), 2127-2140 (2014-06-03)
Intervertebral disc (IVD) degeneration often causes back pain. Current treatments for disc degeneration, including both surgical and nonsurgical approaches, tend to compromise the disc movement and cannot fully restore functions of the IVD. Instead, cell-based IVD tissue engineering seems promising
Carlos Del Rosario et al.
Journal of biomedical materials research. Part A, 103(9), 2998-3011 (2015-02-18)
In this study, three systems containing BMP-2 were fabricated, including two electrospun sandwich-like-systems of PLGA 75:25 and PLGA 50:50 and a microsphere system of PLGA 50:50 to be implanted in a critical size defect in rat calvaria. The in vivo
Savitha S Panikar et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 90, 118-124 (2012-02-18)
The infrared spectra of gaseous and solid N-bromo-hexafluoro-2-propanimine, (CF(3))(2)CNBr, have been obtained from 2000 to 50 cm(-1). The vibrational assignment for the normal modes is proposed based on infrared band contours, group frequencies and normal coordinate calculations utilizing C(s) symmetry.
Marco C Bottino et al.
Journal of tissue engineering and regenerative medicine, 9(11), E116-E123 (2013-03-12)
An electrospun nanocomposite fibrous material holds promise as a scaffold, as well as a drug-delivery device to aid in root maturogenesis and the regeneration of the pulp-dentine complex. A novel three-dimensional (3D) nanocomposite scaffold composed of polydioxanone (PDS II®) and
Šárka Kubinová et al.
Journal of tissue engineering and regenerative medicine, 9(11), 1298-1309 (2013-02-13)
The architecture and mechanical properties of a scaffold for spinal cord injury treatment must provide tissue integration as well as effective axonal regeneration. Previous work has demonstrated the cell-adhesive and growth-promoting properties of the SIKVAV (Ser-Ile-Lys-Val-Ala-Val)-modified highly superporous poly(2-hydroxethyl methacrylate)
Simona Zuppolini et al.
Materials science & engineering. C, Materials for biological applications, 108, 110385-110385 (2020-01-12)
The growing interest in the use of polysaccharides nanoparticles for biomedical applications is related to the recent progresses on the synthesis of cellulose-based polymers with the specific functionalities. In particular, cellulose graft copolymers are emerging as amphiphilic materials suitable to
Rebecca Andrews et al.
Journal of analytical toxicology, 36(1), 61-65 (2012-02-01)
The use of perfluorinated anhydrides coupled with perfluoroalcohols for the derivatization of cannabinoids has been well documented. Derivatization is used in the detection of cannabinoids using gas chromatography-mass spectrometry (GC-MS) with both electron impact ionization (EI) and negative chemical ionization
Chunxiu Huang et al.
Biosensors & bioelectronics, 63, 478-482 (2014-08-19)
The electrogenerated chemiluminescence (ECL) behavior of the bioinspired peptide nanovesicles (PNVs) was reported for the first time. The PNVs modified glassy carbon electrodes have shown a stable and efficient cathodic ECL signal with K2S2O8 as coreactant in aqueous solution. The
Qianqian Zhai et al.
Carcinogenesis, 35(9), 2002-2006 (2014-04-09)
Exposure to environmental agents and endogenous metabolism can both give rise to DNA alkylation. Thymine is known to be alkylated at O(2), N3 and O(4) positions; however, it remains poorly explored how the regioisomeric alkylated thymidine lesions compromise the flow
Dustin C Ernst et al.
Journal of bacteriology, 197(8), 1368-1377 (2015-02-04)
Coenzyme A (CoA) is a ubiquitous coenzyme involved in fundamental metabolic processes. CoA is synthesized from pantothenic acid by a pathway that is largely conserved among bacteria and eukaryotes and consists of five enzymatic steps. While higher organisms, including humans
Sai Zhang et al.
Journal of biomaterials applications, 29(10), 1394-1406 (2015-01-17)
Nano/micro engineered polymeric materials offer expansive scope of biomimetic scaffolds for bone tissue engineering especially those involving electrospun biodegradable nanofibers incorporated with inorganic nanoparticles, thus mimicking the extracellular matrix of bone both structurally and chemically. For the first time, poly-3-hydroxybutyrate-co-3-hydroxyvalerate
Connor W McCarthy et al.
ACS applied materials & interfaces, 7(30), 16202-16212 (2015-07-24)
Although significant advances have been made in the development of artificial vascular grafts, small-diameter grafts still suffer from excessive platelet activation, thrombus formation, smooth muscle cell intimal hyperplasia, and high occurrences of restenosis. Recent discoveries demonstrating the excellent blood-contacting properties
K Halverson et al.
Biochemistry, 29(11), 2639-2644 (1990-03-20)
The amyloid beta-protein (1-42) is a major constituent of the abnormal extracellular amyloid plaque that characterizes the brains of victims of Alzheimer's disease. Two peptides, with sequences derived from the previously unexplored C-terminal region of the beta-protein, beta 26-33 (H2N-SNKGAIIG-CO2H)
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