Biological Toxicity Effects of Soil Pollution Caused by Galvanized Wastewater Based on Vibrio Qinghaiensis sp.-Q67 / 法医学杂志

Objective To establish a rapid diagnosis method for the biological toxicity of soil, accurately and rapidly evaluate the toxicity of contaminated sites and identify the dominant pollutants. Methods Take the soil pollution of a galvanized factory as an example, while the metal concentration level was analyzed and detected, a rapid biological toxicity detection method based on the acute toxicity test of luminescent bacteria （Vibrio qinghaiensis sp.-Q67） was established, and the dominant pollutants were identified by stepwise multiple regression. Results The pollutants came from wastewater and metal plating fragments directly discharged from the manufacturing line of the factory. The concentration of those pollutants was correlated with the acute toxicity of Vibrio qinghaiensis sp.-Q67. The dominant pollutants in the study were zinc （Zn）, aluminum （Al） and copper （Cu）. Conclusion The luminescent bacteria toxicity test method based on Vibrio qinghaiensis sp.-Q67 can conveniently and rapidly assess the degree of toxic damage of polluted soil and identify the dominant pollutants and can be applied to the acute toxicity evaluation of polluted soil.

A fluorescence polarization immunoassay for the detection of aflatoxins in herbal teas / 药学学报

A rapid fluorescence polarization immunoassay (FPIA) has been developed for the determi-nation of aflatoxins in samples of naturally-contaminated herbal teas. The tracers were synthesized by chemical method and determined by thin layer chromatography (TLC) and mass spectroscopy (MS). Fluorescence polarization was evaluated by the detection of polarized light. The results showed that the limit of detection (LOD) of FPIA for aflatoxins was 20 ng·mL-1, the IC50 was 371.80 ng·mL-1, and the linear range of the developed FPIA was 92.76-252.32 ng·mL-1. Compared with conventional HPLC methods, the FPIA developed in this study has the advantages of short analysis time and low cost. This method may be suitable for high- throughput screening of aflatoxins in herbal teas.

Changes of erythrocyte rheology in rabbits with acute renal failure / 中国应用生理学杂志

<p><b>OBJECTIVE</b>To observe the change of erythrocyte theology in rabbits with acute renal failure (ARF).</p><p><b>METHODS</b>Thirty-eight healthy rabbits were randomly divided into control group (n = 8), model group (establishing ARF model via intramuscular injection 1% HgCl2, and divided into 12 h, 24 h, 48 h subgroups, all n = 10), the arterial blood sample was taken out through carotid artery at corresponding times after anesthetization with urethane, for detecting the indices of renal function and erythrocyte rheology.</p><p><b>RESULTS</b>The levels of urea and creatinine in plasma of model rabbits at 12 h, 24 h and 48 h were higher than those of control group, and there was a rise trend along with the time extension. The erythrocytes electrophoresis time at 12 h of model group was higher, the electrophoresis rate and migration rate of erythrocytes were lower compared with those of control group; the erythrocytes electrophoresis time at 24 h of model group was lower and the electrophoresis rate and migration rate were higher compared with those of model group at 12 h; and there were no statistical differences in erythrocytes electrophoresis indices between model group at 48 h and other groups. Meanwhile, there was a rise trend in erythrocyte sedimentation rate (ESR), K value of equation and emendation along with the time extension of ARF, but these indices only at 48 h of model group was lower significantly than that of control group. There were no statistical differences in aggregation index and deformability index of erythrocytes among groups.</p><p><b>CONCLUSION</b>During the process of ARF, the erythrocytes electrophoresis time lengthen and electrophoresis rate and migration rate decrease at early stage, and these indices gradually return to normal; the indices of ESR increase gradually.</p>

Accurate identification of Psammosilene tunicoides and its confused species by systematic identification method / 中国中药杂志

<p><b>OBJECTIVE</b>To develop an effective identification method for accurately discriminating Psammosilene tunicoides and its confused species by the combined method of microscopic identification and molecular identification, so-called systematic identification of Chinese materia medica (SICMM).</p><p><b>METHOD</b>P. tunicoides and its confused species were accurately discriminated by SICMM method, which was established by comprehensively use of microscopic identification and DNA identification method. The DNA identification included the following analysis: the BLAST alignment, specific bases and N-J phylogenetic tree analysis.</p><p><b>RESULT</b>The cluster crystals were not observed in P. tunicoides, but great deals of them were found in Silene viscidula. Further more, big differences of ITS sequence were observed and analyzed between P. tunicoides and its confused specie of S. viscidula.</p><p><b>CONCLUSION</b>The system method is a scientific and accurate method for the identification of P. tunicoides and its counterfeit species.</p>

Changes of blood viscosity and erythrocyte rheology in acute hypoxic hypoxia mices / 中国应用生理学杂志

<p><b>OBJECTIVE</b>To observe the changes of blood viscosity and erythrocyte rheology in mice after acute hypoxic hypoxia (AHH).</p><p><b>METHODS</b>Thirty-two Kui-ming mice were randomly divided into control group, AHH group (duplicating AHH model, and divided into 5 min, 8 min, 11 min subgroups), the blood sample was taken out from heart after neck dislocation at corresponding times, for detecting the blood viscosity and erythrocyte rheology indices.</p><p><b>RESULTS</b>Compared with control group, the whole blood viscosity at different shears, whole blood reduced viscosity, whole blood relative viscosity were lower and the erythrocytes aggregation index was higher in AHH 5 min group; the electrophoresis time was longer and the electrophoresis length, migration of erythrocyte were lower in AHH 8 min and AHH 11 min groups. The whole blood reduced viscosity, whole blood relative viscosity, erythrocytes aggregation index in AHH 8 min group were higher, and the erythrocyte deformability index was lower significantly than that of AHH 5 min group, respectively.</p><p><b>CONCLUSION</b>These data suggested that the AHH could induce the blood viscosity and electrophoresis ability.</p>

The effects of mesenteric lymph drainage on erythrocyte rheology in rats with hemorrhagic shock / 中国应用生理学杂志

<p><b>OBJECTIVE</b>To observe the effects of mesenteric lymph drainage on erythrocyte rheology and blood viscosity in hemorrhagic shock rats.</p><p><b>METHODS</b>Wistar rats were randomly divided into sham-shock group, shock group (establishing hemorrhagic shock model), drainage group (establishing hemorrhagic shock model plus drainaging shock mesenteric lymph from hypotension 1 h). At 3 h of hypotension or corresponding time, blood samples were harvested from the abdominal aorta for determining the erythrocytic parameters, erythrocyte electrophoresis, erythrocyte sedimentation rate (ESR) and blood viscosity, and the erythrocytes aggregation index and erythrocyte deformability index were calculated.</p><p><b>RESULTS</b>Compared with the sham-shock group, the red cell contents, hematocrit (HCT), hemoglobin (Hb), mean corpuscular hemoglobin concentration (MCHC), erythrocyte electrophoretic rate and mobility, erythrocyte deformability index, whole blood viscosity, whole blood relative or reduced viscosity at low and high shear rates in shock group were observably lower, and mean corpuscular volume, electrophoretic time of erythrocyte, ESR, K value of equation and K value of emendation, erythrocytes aggregation index, plasma viscosity in shock group were increased markedly; the MCHC, erythrocyte electrophoretic rate and mobility, whole blood viscosity, whole blood relative viscosity at low and high shear rates in drainage group were reduced, and the red blood cell volume distribution width -SD (RDW-SD) was increased remarkably. At the same time, in drainage group, the HCT, RDW-SD, erythrocyte deformability index, whole blood viscosity and relative viscosity at low and high shear rates were higher, the ESR, K value of equation and K value of emendation, erythrocytes aggregation index, plasma viscosity were lower than that of shock group.</p><p><b>CONCLUSION</b>The results indicate that the mesenteric lymph drainage could improve the erythrocyte rheological behavior, as a result, improve the hemorrheological properties in hemorrhagic shock rats.</p>