Purpose The present study was aimed at developing and exploring the use of uncoated and chondroitin sulfate A (CSA) coated PEGylated poly-l-lysine-based dendrimers for controlled and sustained delivery of a blood schizonticide, chloroquine phosphate (CQ). Methods The poly-l-lysine-based peptide ...
This manuscript addresses the physicochemical behavior of an antimalarial drug Chloroquine Diphosphate (CLQ) as well as its interaction with anionic surfactants and Human Serum Albumin (HSA). Surface tension and specific conductivity were employed to detect the critical micelle concentration (CM...
The interactions of chloroquine diphosphate (CQP) and phenelzine sulfate (PS) drugs with human serum albumin (HSA) and human hemoglobin (HMG) proteins were investigated by various spectroscopic methods. It was found that CQP caused the fluorescence quenching of protein molecules through a static...
N-1-Naphthylphtalamic acid (naptalam) and its degradation products, 1-naphthylamine and N-(1-naphthyl) phthalimide were simultaneously determined in river water by two independent mass spectrometric (MS) methods. These were negative ion MS (NIMS) and programmable temperature vaporizer gas chroma...
Two different processes for degradation of N-1-naphthylphthalamic acid (naptalam, Nap) are known. Formation of 1-naphthylamine (Na) and phthalic acid (Pha) is one of the degradation processes. Another degradation product of Nap is N-(1-naphthyl) phthalimide (Nad). The HPLC results show that the ...
This paper presents the development of a single flow-through phosphorescence optosensor for simultaneous determination of pesticide N-1-naphthylphthlamic acid (NAP) and its metabolite 1-naphthylamine (NNA). The system works as a simple and rapid phosphorimetry-biparameter sensor. It is based in ...
Biodegradation of pollutants often results in incomplete mineralization and formation of degradation products with unknown chemical and toxicological characteristics. Ultraviolet (UV) irradiation, a common technology used in water and wastewater treatment, may help reduce aqueous concentrations ...
A combination of biotechnological and electrochemical techniques is employed to synthesize an electroactive π-conjugated polymer. The monomer precursor bearing a hydroxyl group is obtained by the bioconversion of dibenzothiophene. An alkyl chain substituent is introduced by Williamson etherific...
BACKGROUNDIn this work, the scale‐up of the biodesulfurization process at rest from shaken flask to stirred tank bioreactor cells has been studied taking into account the influence of the hydrodynamic conditions of the oxygen transfer rate.RESULTSDifferent hydrodynamic conditions to carry out t...
Spore-forming bacterial strains capable of utilizing dibenzofuran (DF) as a sole source of carbon and energy were isolated. Characteristics of the isolates justified their classification into the genus Paenibacillus, and their closest relative was P. naphthalenovorans. Degenerate primers for aro...
A dibenzofuran (DF)-degrading bacterium, Nocardioides sp. DF412, was isolated and its genes responsible for the degradation of DF were cloned and characterized. The dfdA1A2A3A4 gene cluster coding for a ring hydroxylating dioxygenase was located on a plasmid, and the dfdBC gene cluster coding fo...
XanI2 (4,5‐diiodo‐2,7‐di‐tert‐butyl‐9,9‐dimethylxanthene) and DBFI2 (4,6‐diiododibenzofuran) have been functionalized first with Ph2Bi units through reaction with PhLi and then with Ph2BiCl. The remaining C–I bonds were shown to undergo oxidative additions to M(PPh3)2 species (M = Pd, N...
The healing process in the microvasculature of cinchophen-induced acute gastric mucosal lesion was studied by the vascular corrosion casting method and conventional scanning electron microscopy. Thirty-six hours after cinchophen injection, prominent degeneration and exfoliation of surface mucous...
Absorption and steady state fluorescence spectra of phenyl 1-hydroxy-2-naphthoate (abbreviated as PHN) have been recorded in a series of non-polar, polar protic and polar aprotic solvents at room temperature. The pH effect on the excited state intramolecular proton transfer (ESIPT) has been disc...
The aqua ligand of the aquapentacyanoferrate(II) ion was replaced by 2-nitroso-1-naphthol and its sulphonate derivative giving the analogous mononuclear nitrosonaphtholpentacyanoferrate(II) complex in the first stage of the reaction. In the second stage, a cyano-bridged binuclear product was ob...
Highly rapid and selective vortex-assisted liquid–liquid microextraction based on solidification of organic drop has been used for determination of cobalt ion. 2-Nitroso-1-naphthol (2N1N) was used as a selective complexing agent to form stable cobalt–2N1N complex which can be extracted with 1-...
A simple and effective method is presented for the separation and preconcentration of Th(IV), Ti(IV), Fe(III), Pb(II) and Cr(III) by solid phase extraction on 2-nitroso-1-naphthol impregnated MCI GEL CHP20P resin prior to their inductively coupled plasma-mass spectrometric determinations. The in...
Extracellular ATP causes 40% stimulation of Mg2+efflux from Ehrlich ascites tumor cells (EATC) incubated under0-transconditions. ATP also causes a threefold increase of arachidonic acid (AA) metabolite release from [3H]AA-preloaded EATC, indicating that, under these experimental conditions, it i...
Objective: A reduced bioactivity of endothelial nitric oxide (NO) has been implicated in the pathogenesis of atherosclerosis. In humans, the endothelial l-arginine-NO pathway has been indirectly assessed via the flow response to endothelium-dependent vasodilators locally administered into the c...
Degenerate four-wave mixing measurements, using the 35 ps pulses at 532 nm, have been employed to investigate the third-order nonlinear optical parameters of two chromium tricarbonyl complexes η 6-bonded to 3-amino-9-ethylcarbazole at either the NH2-substituted aryl ring (1) or the unsubstitute...
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