[Responses of taxonomic and functional diversity of soil mites to altitudinal changes in forest ecosystems of Lyuliang Mountains, Shanxi, China]. / å•æ¢å±±æ£®æž—ç”Ÿæ€ç³»ç»ŸåœŸå£¤èž¨ç±»ç‰©ç§å¤šæ ·æ€§å’ŒåŠŸèƒ½å¤šæ ·æ€§å¯¹æµ·æ‹”æ¢¯åº¦çš„å“åº”.

The altitudinal gradient pattern of mountain biodiversity and its formation mechanism are hot topics in ecological research. The altitudinal variations of belowground invertebrates are less understood than aboveground plants and animals. With soil mites as the model soil animals, we investigated their distribution patterns from 1318 m to 2500 m above sea level in three mountains of Lyuliang Mountains based on species diversity and functional diversity. We used soil pH, total N, total P, total K, and organic matter content to identify potential drivers of soil mite communities and diversity along the altitudinal gradient. A total of 715 soil mites were collected, belonging to 3 orders, 27 families, 28 genera, and 29 species. Phthiracarus clemens, Geolaelaps praesternalis and Diapterobates humeralis were dominant mites. Non-metric multidimensional scaling showed that soil mites community composition varied significantly among different altitudes due to Epilohmannia ovata predominated in high altitude and P. clemens predominated in middle altitude. There were significant differences in individual density of soil mites among different altitudes. The Margalef, Shannon, and Simpson indices followed a unimodal distribution pattern along the altitudinal gradient. Functional richness and functional evenness showed a unimodal distribution pattern along the altitudinal gradient, while other functional diversity indices changed little with altitude. The RDA results indicated that total K and soil pH were the major drivers for the variations in soil mite communities. The Pielou index of soil mites was significantly positively correlated with soil pH, while functional evenness was negatively correlated with altitude. Individual density, species number, Margalef, Simpson and Shannon indices were significantly positively correlated with functional richness index. Species diversity and functional diversity of soil mites varied differently with altitude. In the future, we should strengthen long-term monitoring and dynamic functional properties of soil mites and the community assembly to deeply understand the relationship between biodiversity and ecosystem functions.

[Effects of freeze-thaw cycles on soil arthropod in the permafrost region of the Great Hing'an Mountains, Northeast China]. / å†»èžä½œç”¨å¯¹å¤§å ´å®‰å²­å¤šå¹´å†»åœŸåŒºåœŸå£¤èŠ‚è‚¢åŠ¨ç‰©çš„å½±å“.

A laboratory experiment was conducted to investigate the impacts of freeze-thaw intensity (-5-5 ℃, -10-5 ℃) and frequency (1, 5, 10, 15 times) on the community structure of soil arthropod in permafrost zone, Great Hing'an Mountains with the 5 ℃ as control. A total of 4198 individuals of soil arthropod were extracted, belonging to 4 classes, 9 orders, 24 families and 33 genera. The results showed that the number of individuals and groups of soil arthropod decreased significantly in the treatment with high frost intensity (-10-5 ℃), while the individuals of some taxa increased in the treatment with low frost intensity (-5-5 ℃) after the first freeze-thaw incubation. The group number, Margalef index and Shannon index decreased with the increases of freeze-thaw cycling times in low frost intensity treatment, while did not change regularly in high frost intensity treatment. Larva stage was a kind of survival strategy for arthropod to resist low temperature stress, with Acari showing stronger cold tolerance. Different responses of soil arthropod to freeze-thaw cycles, synergistic effect among species and soil environment were factors affecting the structure of soil arthropod community. This study could provide scientific data and theoretical basis for the research and conservation of soil arthropod diversity in the permafrost zone in mid-high latitudes.

The prognosis of coronary disease with different cardiovascular risk factors combined / 中华急诊医学杂志

Objective To assess the prevalence, and characteristics, and in-hospital and long-term prognosis of coronary artery disease (CAD) with metabolic syndrome, and to determine the factors affecting the prognosis of CAD most. Method The DESIRE (drug-eluting stent impact on revascularization) registry covered a database of 2368 patients with coronary artery disease (CAD) treated with percutaneous coronary intervention (PCI) or coronary artery bypass graft (CABG) in a period between July 2003 and September 2004. The median long-term follow-up time was 3.5 years ranged from 293 to 1855 days. The metabolic syndrome (MS) was diagnosed on the Definition of the Metabolic Syndrome modified by the Adult Treatment Panel (ATP) Ⅲ in 2005, by using the body mass index (BMI) instead of waist circumference. The relationship between metabolic syndrome (MS) and the incidences of major adverse cardiac as well as cerebral events (MACCE) in a large cohort of patients treated for revascularization was analyzed by using logistic analysis and Cox regression with SPSS 11.0 software. Results The Ms was present in 45.6% patients (high fast glucose (FG) in 44.5% patients, high triglycerides (TG) in 45.0% patients, low high density lipoprotein (HDL) in 50.8% patients, high BP in 61.4% patients, high BMI in60.7% patients). After follow-up, the ratio of MACCE in CAD patients with metabolic syndrome increased significantly (18.9% vs. 15.6%, P <0.036). The most dangerous factors of MS were high FG, hypertension and obesity (OR=1.787, 95%CI=1.132-2.845, P =0.014). Conclusions The MS contributes the high risk factors of MACCE in CAD patients with or without diabetes. The most dangerous combination of risk factors in MS is the combination of high FG, hypertension and obesity.

Effect of biminne on vascular permeability of nasal mucosa in allergic rhinitis rats / 中国中西医结合杂志

<p><b>OBJECTIVE</b>To investigate whether the effect of Biminne on allergic rhinitis (AR) was through improving vascular permeability of nasal mucosa.</p><p><b>METHODS</b>Rat's model in Biminne-treated group and model group was induced by intraperitoneal injection of ovalbumin (OVA) and aluminum hydroxide gel suspension Biminne-treated rats were orally given Biminne suspension from the 8th day to the 17th day. On the 18th day, Evan's blue dye (EBD) in the nasal perfusate was detected to assess the vascular permeability.</p><p><b>RESULTS</b>EBD concentration was higher in the model rats than that in the normal rats, and lower in the Biminne-treated rats than that in the model rats (both P < 0.01).</p><p><b>CONCLUSION</b>Biminne could improve vascular permeability of nasal mucosa in sensitized rats, which may be the mechanism of its clinical effect on AR.</p>