introduction: the role of ovarian hormones and nitric oxide (no) on oxidative damage in brain tissues as well as learning and memory has been widely investigated.the present study was carried out to evaluate the effect of the precursor of no, l-arginine on learning and brain damage due to oxidative stress in ovariectomized (ovx) rats.methods: thirty -two rats were divided into four groups: 1) s...

  In the present investigation, a novel adsorbent, ionic liquid modified magnetic nanoparticles (IL-Fe3O4), was successfully synthesized and characterized by FT-IR spectroscopy, ThermoGravimetric Analysis (TGA), XRD analysis, Scanning Electron Microscopy (SEM) and theory of Brunauer, Emmett, and Teller (BET) for remo...

Modified chitosan nanoparticles are a promising platform for drug, such as 5-fluorouracil (5-FU), gene, and vaccine delivery. Here, we used chitosan and hepatoma cell-specific binding molecule glycyrrhetinic acid (GA) to synthesize glycyrrhetinic acid-modified chitosan (GA-CTS). The synthetic product was confirmed by infrared spectroscopy and hydrogen nuclear magnetic resonance. By combining GA...

introduction: the relation between morphine and nitric oxide release has been shown. due to important role of nitric oxide in regulation of skin blood flow, the aim of this study was to investigate the effect of nitric oxide synthase inhibitor (l-name) and nitric oxide synthesis precursor (l-arginine) on skin blood flow of intact and morphine-dependent rats. methods: skin blood flow of hind paw...

aloe buettneri a. berger is commonly used in traditional togolese medicine to treat inflammatory and gastric ulcers. the present study examined the gastro-protection effect of the hydro-alcoholic extract of a. buettneri on mucus production and gastric ph. a gastric ulcer is induced by ethanol 95° alone (1 ml/kg body weight), after pre-treatment with indomethacin (300 mg/kg) or by utilising l-na...

the stability constants and complexation reaction between l-glutamine, l-arginine andglycine with zn (ii) , co (ii) and ni (ii) were studied potentiometrically in aqueous solution at25° c and μ=0.1 m kno3. the overall stability constants log β´s of all species are obtained bycomputer refinement of ph-volume data using best computer program. several models weretested and the lowest δfit, the bes...

synthesis and characterization of two functionalized gold nanoparticles by using of two poly functional amino acids (l-arginine and l-aspartic acid) are reported. the gold nanoparticles were reduced by sodium citrate and functionalized with l-arginine at the ph of 7 and 11 and l-aspartic acid at the ph of 7. transmission electron microscopy, uv-vis spectroscopy, dynamic light scattering, zeta p...

n-sodium acrylate-o-carboxymethyl chitosan [cmch-g-paa(na)] bound fe3o4 nanoparticles were developed as a novel magnetic nanoparticles with an ionic structure that can be potentially used in many fields. cmch-g-paa (na) was obtained by grafting of sodium polyacrylate on o-carboxymethyl chitosan, which is an amphiphilic polyelectrolyte with the biocompatibility and biodegradability properties. a...