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Stranica 1 iz 189 rezultatima
7 Tesla imaging of cerebral radiation necrosis after arteriovenous malformations treatment using amide proton transfer (APT) imaging.
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Arteriovenous malformations (AVM) can be treated with stereotactic radiosurgery. An infrequent, but important complication of this treatment is radionecrosis, which can be detected by MRI. However, the imaging characteristics of necrosis are unspecific in conventional MRI. Here, we report a case of
Molecular Descriptors in Modelling the Tumour Necrosis Factor-α Converting Enzyme Inhibition Activity of Novel Tartrate-Based Analogues.
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The tumour necrosis factor-α converting enzyme inhibition activity of a series comprising of novel tartrate-based analogues has been quantitatively analysed in terms of molecular descriptors. The statistically validated quantitative structure-activity relationship models provided rationales to
Lipopolysaccharide-induced pulmonary inflammation is not accompanied by a release of anandamide into the lavage fluid or a down-regulation of the activity of fatty acid amide hydrolase.
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The effect of lipopolysaccharide inhalation upon lung anandamide levels, anandamide synthetic enzymes and fatty acid amide hydrolase has been investigated. Lipopolysaccharide exposure produced a dramatic extravasation of neutrophils and release of tumour necrosis factor alpha into the
Selection of novel analogs of thalidomide with enhanced tumor necrosis factor alpha inhibitory activity.
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BACKGROUND
Tumor necrosis factor alpha (TNF alpha) is thought to mediate both protective and detrimental manifestations of the inflammatory response. Recently, thalidomide (alpha-N-phthalimidoglutarimide) was shown to partially inhibit monocyte TNF alpha production (by 50-70%) both in vivo and in
Immunological activity of new heterocyclic amides of 5-amino-3-methylisoxazole-4-carboxylic acid.
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In the present study, some new amides of 5-amino-3-methylisoxazole-4-carboxylic acid were obtained. All new structures possessed markedly different groups of electron acceptor character, different spatial structure and they contained nitrogen heteroatom, enabling formation of salts and, at the same
alpha-Substituted malonester amides: tools to define the relationship between ACAT inhibition and adrenal toxicity.
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We prepared a series of alpha-substituted malonester amides that were evaluated for their ability to inhibit acyl-CoA:cholesterol O-acyl transferase activity in vitro and to lower plasma total cholesterol levels in a variety of cholesterol-fed animal models. Compounds of this series were also useful
The solution structure and conformational dynamics of tumor necrosis factor-alpha and a (Cys69----Asp; Cys101----Arg) analog as examined by IR spectroscopy and hydrogen exchange.
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An analog of human tumor necrosis factor-alpha (TNF-alpha) was created with Cys69 and Cys101 replaced with Asp and Arg respectively. We have undertaken a comparative study of the solution conformation and dynamics of the native and analog molecules using a combination of Fourier transform IR
Direct radiofrequency saturation corrected amide proton transfer tumor MRI at 3T.
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OBJECTIVE
Amide proton transfer (APT) imaging has been increasingly applied in tumor characterization that complements diffusion and dynamic contrast-enhanced MRI. However, quantification of in vivo APT effect is challenging because of concomitant semisolid magnetization transfer (MT) and nuclear
Endothelial barrier protection by local anesthetics: ropivacaine and lidocaine block tumor necrosis factor-α-induced endothelial cell Src activation.
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BACKGROUND
Pulmonary endothelial barrier dysfunction mediated in part by Src-kinase activation plays a crucial role in acute inflammatory disease. Proinflammatory cytokines, such as tumor necrosis factor-α (TNFα), activate Src via phosphatidylinositide 3-kinase/Akt-dependent nitric oxide generation,
Hepatoprotective amide constituents from the fruit of Piper chaba: Structural requirements, mode of action, and new amides.
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The 80% aqueous acetone extract from the fruit of Piper chaba (Piperaceae) was found to have hepatoprotective effects on D-galactosamine (D-GalN)/lipopolysaccharide-induced liver injury in mice. From the ethyl acetate-soluble fraction, three new amides, piperchabamides E, G, and H, 33 amides, and
[Search for TNF-alpha sensitivity degradation principles from medicinal foods-hepatoprotective amide constituents from Thai natural medicine Piper chaba].
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Eighty percent (80%) aqueous acetone extract from fruit of Piper chaba (Piperaceae) was found to have a hepatoprotective effect on D-galactosamine (D-GalN)/lipopolysaccharide (LPS)-induced liver injury in mice. Among the isolates, several amide constituents inhibited D-GalN/tumor necrosis
Protective effects of amide constituents from the fruit of Piper chaba on D-galactosamine/TNF-alpha-induced cell death in mouse hepatocytes.
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The methanolic extract from the fruit of Piper chaba (Piperaceae) was found to have a hepatoprotective effect on D-galactosamine (D-GalN)/lipopolysaccharide (LPS)-induced liver injury in mice. From the ethyl acetate-soluble fraction, a new amide constituent named piperchabamide E together with
Design, synthesis, and structure-activity relationships of macrocyclic hydroxamic acids that inhibit tumor necrosis factor alpha release in vitro and in vivo.
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To search for TNF-alpha (tumor necrosis factor alpha) converting enzyme (TACE) inhibitors, we designed a new class of macrocyclic hydroxamic acids by linking the P1 and P2' residues of acyclic anti-succinate-based hydroxamic acids. A variety of residues including amide, carbamate, alkyl,
Hederagenin amide derivatives as potential antiproliferative agents.
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In this study, a series of C-28 amides derivatives of hederagenin with or without the presence of an acetyl group at positions 3 and 23 in ring A, were synthetized aiming to develop potent cytotoxic agents. Their structures were confirmed by MS, IR, 1H NMR and 13C NMR
Design, Synthesis and Investigation of the Potential Anti-Inflammatory Activity of 7-O-Amide Hesperetin Derivatives.
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To develop new anti-inflammatory agents, a series of 7-O-amide hesperetin derivatives was designed, synthesized and evaluated for anti-inflammatory activity using RAW264.7 cells. All compounds showed inhibitory effect on LPS-induced NO production. Among them,
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