Visfatin, also known as extracellular pre-B-cell colony-enhancing factor (PBEF) and nicotinamide phosphoribosyltransferase (Nampt), is an adipocytokine whose circulating levels are enhanced in metabolic disorders, such as type 2 diabetes mellitus and obesity. Circulating visfatin levels have been positively associated with vascular damage and endothelial dysfunction. Here, we investigated the a...

This paper analyzes the effect of exogenous urea in increased concentration gradient (0, 100, 500 and 1,000 mg L(-1)) on photosynthetic pigments (measured spectrophotometrically), uptake of (14)CO2 (using radioisotope), and urease activity (by measuring ammonia with Nessler's reagent) in leaves of Elodea densa Planch. We have observed that low concentration of urea (100 mg L(-1)) stimulates the...

Graham, J.L. and J.R. Jones. 2007. Microcystin distribution in physical size class separations of natural plankton communities. Lake and Reserv. Manage. 23:161-168. Phytoplankton communities in 30 northern Missouri and Iowa lakes were physically separated into 5 size classes (>100 μm, 53-100 μm, 35-53 μm, 10-35 μm, 1-10 μm) during 15-21 August 2004 to determine the distribution of microcystin (...

in this research, the effects of pulsing application of preservative solutions containing salicylic acid (100 and 200 mg/l) and methyl jasmonate (25 and 50 mg/l) and long period application of preservative solutions containing thymol (75 and 125 mg/l), menthol (75 and 125 mg/l) and eugenol (50 and 100 mg/l) on the maintain quality and extend vase-life of carnation cut flowers two tests were eva...

The aim of this study was to perform various tests of the anesthetic efficacy of eugenol applied to different handling tasks such as artificial insemination, spawning induction, obtaining body weight and length, the conduct of operations, biopsies and transport of Xiphophorus helleri (Heckel, 1848). The tests were performed on 10 individual males and 10 individual females of X. helleri -1 (swor...

sylhomocysteine (SAH) as a substrate at 50 mol/L and 3-DA at 0, 50, 100, and 200 mol/L in the assay buffer. Conversion of SAH to adenosine and Hcy was measured by its subsequent conversion to H2S by rHCYase with colorimetric measurement at 675 nm using N,N-dibutylphenylenediamine hydrochloride as the chromophore (5, 6). When 3-DA was added from 0 to 200 mol/L, the remaining activity decreased f...

AIM To assess the impact of highly active antiretroviral therapy (HAART) on the prevalence and progression of CMV retinitis (CMVR) among AIDS patients with baseline CD4 cell counts <100 cells x 10(6)/l. METHODS A longitudinal cohort study of 1292 patients. CD4 cell counts and HIV viral load measurements were obtained before commencing therapy, at 3 months, 1 year, 2 years, and at last follow ...

be induced by stimulus trains for 7.5 seconds only with the BDM or blebbistatin jet (100 nmol/L isoproterenol, 1.0 mmol/L [Ca ]o, 24°C). During sustained arrhythmias, Ca 2 surges preceded synchronous increases in [Ca ]i, whereas the stoppage of the BDM jet made the Ca surges unclear and arrested sustained arrhythmias (n 6). With 200 nmol/L isoproterenol, 2.5 mmol/L [Ca ]o, and the BDM jet, leng...

The aim of the present study was to elucidate the roles of endothelium-derived hyperpolarizing factors (EDHFs) and nitric oxide (NO) in mediating the vasodilatation response to astragaloside IV and the effects of astragaloside IV on voltage-dependent Ca2+ channels and receptor-operated Ca2+ channels in rat thoracic aortic rings precontracted with potassium chloride (KCl; 60 mM) or phenylephrine...