Guangyi Cao

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BACKGROUND Uraemic pruritus (UP) is one of the most common problems in patients with chronic renal failure. Owing to the complexity of UP, no specific treatment is currently available. Recently, the accumulated toxins of mid and macro molecules in advanced renal failure have been proposed to play an important role in the mediation of pruritus. AIM To(More)
1. Effects of acute methamphetamine administration on spacing and locomotor activity were investigated in paired rats using a computer-assisted automated video-analysis method. 2. Both 0.1 and 1 mg/kg of methamphetamine significantly increased the spacing in comparison with saline. This alteration in behavioral interaction by methamphetamine may serve as(More)
We quantified an exogenous cancer biomarker, Acetyl amantadine (AcAm), directly from urine solution using surface enhanced Raman spectroscopy (SERS). SERS was used for the detection of AcAm using a commercial Raman substrate after beta-cyclodextrin encapsulation for capture of the analyte. We achieved a detection limit of 1 ng mL(-1) of AcAm in the mock(More)
The inactivation efficiencies of microorganisms were found to be enhanced by using silver solution together with ultraviolet light (UV-A, 395 nm) irradiation. The inactivation efficiencies were improved remarkably especially in eukaryotic microorganism. To make clear the inactivation mechanism of microorganisms by the combination effect of silver and(More)
Three types of colony, powdery gray, white and bald, were isolated from Streptomyces avermitilis ATCC31272. Among them, only the powdery grey one produces avermectins. Sa-76 strain was selected from the powdery grey strain by mutation with high energy electric flow, and its avermectins titer attainde 100 micrograms/mL in shaking flask. Avermectin B1 was(More)
Ecosystem photosynthetic characteristics are of utmost importance for the estimation of regional carbon budget, but such characteristics are not well understood in alpine regions. We collected CO2 flux data measured by eddy covariance technique over an alpine dwarf shrubland on the Qinghai-Tibetan Plateau during years 2003–2010; and we quantified the(More)
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