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Jared M Fine et al.
Neuroscience letters, 584, 362-367 (2014-12-03)
In addition to the hallmark accumulation of amyloid and hyper-phosphorylation of tau, brain changes in Alzheimer's disease are multifactorial including inflammation, oxidative stress, and metal dysregulation. Metal chelators have been explored as a less well known approach to treatment. One
Valery Radchenko et al.
Nuclear medicine and biology, 41(9), 721-727 (2014-08-05)
The niobium-90 radioisotope ((90)Nb) holds considerable promise for use in immuno-PET, due to its decay parameters (t½ = 14.6h, positron yield=53%, Eß(+)(mean) = 0.35 MeV and Eß(+)(max) = 1.5 MeV). In particular, (90)Nb appears well suited to detect in vivo
Methane Sulphonic Acid is Green Catalyst in Organic Synthesis.
Kulkarni P.
Orient. J. Chem., 31(1), 447-451 (2015)
Fernanda Crunfli et al.
Clinical and experimental pharmacology & physiology, 42(3), 246-255 (2014-11-29)
Dipyrone is a non-steroidal anti-inflammatory drug used primarily as an analgesic and antipyretic. Some hypothesize that dipyrone activity can modulate other pathways, including endocannabinoid signalling. Thus, the aim of the present study was to evaluate the possible role of endocannabinoids
Cassandra J Gaston et al.
Environmental science & technology, 44(5), 1566-1572 (2010-02-04)
Dimethyl sulfide (DMS), produced by oceanic phytoplankton, is oxidized to form methanesulfonic acid (MSA) and sulfate, which influence particle chemistry and hygroscopicity. Unlike sulfate, MSA has no known anthropogenic source making it a useful tracer for ocean-derived biogenic sulfur. Despite
Xian-Zhe Dong et al.
Anti-cancer drugs, 26(3), 331-342 (2014-12-19)
3β-O-{α-L-Pyran rhamnose-(1→3)-[β-D-xylopyranose-(1→2)]-β-D-glucopyranose-(1→4)-[β-D-lucopyranose-(1→2)]-α-L-pyran arabinose}-cyclamiretin A (AG4) is a saponin component obtained from the Giantleaf Ardisia Rhizome (Rhizoma Ardisiae Gigantifoliae). The present study aimed to investigate the antitumor potential of AG4 and its possible mechanisms in human nasopharyngeal carcinoma cells (CNE). We
Renata Solarska et al.
Nanoscale, 4(5), 1553-1556 (2012-02-01)
Nanostructuring of semiconductor films offers the potential means for producing photoelectrodes with improved minority charge carrier collection. Crucial to the effective operation of the photoelectrode is also the choice of a suitable electrolyte. The behaviour of the nanostructured WO(3) photoanodes
Tsung-Ming Shih et al.
Chemico-biological interactions, 187(1-3), 207-214 (2010-03-13)
This study compared the ability of nine oximes (HI-6, HLö7, MMB-4, TMB-4, carboxime, ICD585, ICD692, ICD3805, and 2-PAM) to reactivate in vivo cholinesterase (ChE) in blood, brain, and peripheral tissues in guinea pigs intoxicated by one of four organophosphorus nerve
Wenyuan Liu et al.
Journal of pharmaceutical and biomedical analysis, 52(4), 603-608 (2010-02-09)
10-O-(N,N-dimethylaminoethyl)-ginkgolide B methanesulfonate (XQ-1H), a novel active derivative of ginkgolide B, is a platelet-activating factor antagonist which is being under clinical trial. Two unknown related impurities were observed in analysis of XQ-1H bulk drug. A scaling up preparative liquid chromatography
Jae Hong Seo et al.
Drug design, development and therapy, 9, 3961-3968 (2015-08-08)
Cilostazol is a Biopharmaceutical Classification System class II drug with low solubility and high permeability, so its oral absorption is variable and incomplete. The aim of this study was to prepare two sulfonate salts of cilostazol to increase the dissolution
Xuan Zhao et al.
Oncotarget, 6(8), 5582-5596 (2015-02-26)
Anti-apoptotic protein Mcl-1 plays an important role in protecting cell from death in acute myeloid leukemia (AML). The apoptosis blocking activity of Mcl-1 is inhibited by BH3-only protein Noxa. We found that dihydroartemisinin (DHA) and its derivative X-11 are potent
Mirelle Garcia Silva-Bailão et al.
PloS one, 9(8), e105805-e105805 (2014-08-27)
Iron is a micronutrient required by almost all living organisms, including fungi. Although this metal is abundant, its bioavailability is low either in aerobic environments or within mammalian hosts. As a consequence, pathogenic microorganisms evolved high affinity iron acquisition mechanisms
Qianwen Zhao et al.
Journal of diabetes, 6(4), 304-315 (2013-11-20)
Anemarrhena asphodeloides Bunge is widely used in China for the treatment of diabetes and the polyphenol components are responsible for its anti-diabetic action. This study aimed to investigate the effect of total polyphenol of Anemarrhena asphodeloides (TPAA) on endothelial dysfunction and
Environmental benefits of methanesulfonic acid. Comparative properties and advantages.
Gernon MD.
Green Chemistry, 1(3), 127-140 (1999)
Junna Song et al.
Metabolism: clinical and experimental, 64(3), 428-437 (2014-12-17)
Endothelial dysfunction is tightly associated with cardiovascular complications in diabetic patients. This study aims to investigate the effects of mangiferin on the regulation of endothelial homeostasis under endoplasmic reticulum stress (ER stress) conditions. High glucose (25 mmol/L) exposure induced ER
Yi-Ling Hsieh et al.
Pharmaceutical research, 32(9), 3110-3118 (2015-04-16)
The aim of this study was to investigate how the disproportionation process can be impacted by the properties of the salt, specifically pHmax. Five miconazole salts and four sertraline salts were selected for this study. The extent of conversion was
L E Vanatta et al.
Journal of chromatographic science, 49(8), 610-611 (2011-08-24)
A statistical procedure is presented for calibrating chromatographic methods that generate negative chromatographic peaks. The technique is illustrated via data collected during the ion-chromatographic analysis of the ammonium ion in methansulfonic-acid solutions. A peak-integration protocol is explained and subsequent regression
Aki Kijima et al.
Toxicology, 331, 125-135 (2015-03-17)
Nitrofurans are antimicrobial compounds containing a nitro group at the 5-position of the furan ring and an amine or hydrazide side chain derivative. One member of the nitrofurans, nitrofurantoin (NFT), is a renal carcinogen in male rats despite its still
Zimeng Wang et al.
Environmental science & technology, 49(12), 7236-7244 (2015-05-13)
Ligand-promoted dissolution and reductive dissolution of iron (hydr)oxide minerals control the bioavailability of iron in many environmental systems and have been recognized as biological iron acquisition strategies. This study investigated the potential synergism between ligands (desferrioxamine B (DFOB) or N,N'-Di(2-hydroxybenzyl)ethylenediamine-N,N'-diacetic
Tran B Nguyen et al.
Physical chemistry chemical physics : PCCP, 17(27), 17914-17926 (2015-06-23)
Methacryloyl peroxynitrate (MPAN), the acyl peroxynitrate of methacrolein, has been suggested to be an important secondary organic aerosol (SOA) precursor from isoprene oxidation. Yet, the mechanism by which MPAN produces SOA through reaction with the hydroxyl radical (OH) is unclear.
Xiangke Chen et al.
The journal of physical chemistry. B, 114(47), 15546-15553 (2010-11-11)
The molecular organization at the aqueous dimethyl sulfoxide (DMSO) and methanesulfonic acid (MSA) surfaces was investigated using vibrational sum frequency generation (VSFG) spectroscopy and molecular dynamics (MD) simulation. The molecular orientation of surface DMSO and MSA is deduced based on
Kimiko Ishiguro et al.
Biochemical pharmacology, 91(3), 312-322 (2014-08-19)
Triapine, currently being evaluated as an antitumor agent in phase II clinical trials, and its terminally dimethylated derivative Dp44mT share the α-pyridyl thiosemicarbazone backbone that functions as ligands for transition metal ions. Yet, Dp44mT is approximately 100-fold more potent than
Benedetto Natalini et al.
Talanta, 85(3), 1392-1397 (2011-08-03)
The successful enantioseparation of five 6-desfluoroquinolones with three polysaccharide-based stationary phases (namely, the cellulose-based Chiralpak IB and the two amylose-based Chiralpak AD-H and Lux Amylose-2) is herein described. The investigated species differ for the nature of substituents and/or the position
Neal W Sach et al.
Organic letters, 14(15), 3886-3889 (2012-07-18)
A general synthesis of aryl ethers from primary and secondary alcohols and aryl mesylates is presented. The reaction proceeds via a sulfonyl-transfer mechanism. In this paper, we compare the sulfonyl transfer reaction to Mitsunobu ether formation. The reaction can be
Jin Zhang et al.
Journal of pharmaceutical and biomedical analysis, 98, 247-252 (2014-06-20)
Peak tailing of phosphate prodrugs in acidic mobile phases was thoroughly investigated. The results indicated that both metal-phosphate interactions and silanophilic interactions contributed to the observed peak tailing. Column pretreatment with phosphate buffers was demonstrated to be an effective and
E Finkin-Groner et al.
British journal of pharmacology, 172(4), 1101-1113 (2014-10-18)
In the search for safer and effective anti-inflammatory agents, we investigated the effect of methyl indoline-3-propionate and indoline-3-(3-aminopropyl) carbamates on LPS-induced lung injury and pro-inflammatory cytokines in mice. Their mechanism of action was determined in murine peritoneal macrophages. Lung injury
José-Ángel García-Pedraza et al.
Clinical and experimental pharmacology & physiology, 42(6), 640-647 (2015-04-10)
5-HT is a powerful vasoconstrictor substance in renal vasculature (mainly by 5-HT₂ activation). Nevertheless, 5-HT is notable for its dual cardiovascular effects, producing both vasodilator and vasoconstrictor actions. This study aimed to investigate whether, behind the predominant serotonergic vasoconstrictor action
Solvejg Jørgensen et al.
Physical chemistry chemical physics : PCCP, 15(14), 5140-5150 (2013-03-02)
The gas phase reaction between methane sulfonic acid (CH3SO3H; MSA) and the hydroxyl radical (HO), without and with a water molecule, was investigated with DFT-B3LYP and CCSD(T)-F12 methods. For the bare reaction we have found two reaction mechanisms, involving proton
Anantha-Barathi Muthukrishnan et al.
PloS one, 9(9), e109005-e109005 (2014-10-01)
The fast adaptation of Escherichia coli to stressful environments includes the regulation of gene expression rates, mainly of transcription, by specific and global stress-response mechanisms. To study the effects of mechanisms acting on a global level, we observed with single
Zhan Zhang et al.
Journal of the American Chemical Society, 136(21), 7591-7594 (2014-05-13)
A large porphyrin analogue, cyclo[6]pyridine[6]pyrrole, containing no meso bridging atoms, has been synthesized through Suzuki coupling. In its neutral form, this macrocycle exists as a mixture of two figure-eight conformers that undergo fast exchange in less polar solvents. Upon protonation
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