急性心衰患者BNP与血清S100B蛋白和NSE的相关性研究

目的探讨急性心力衰竭(心衰)患者脑利钠肽(BNP)水平与血清S100B蛋白和神经元特异性烯醇化酶(NSE)的相关性。方法 54例急性心力衰竭患者,根据脑功能分级(CPC)分为预后良好组(CPC1~2级,32级)与预后不良组(CPC3~5级,22级),比较两组BNP、S100B及NSE水平,分析BNP与S100B、NSE的相关性。结果预后不良组BNP、S100B、NSE水平分别为(2363.6±153.2)pg/ml、(3.1±1.3)μg/l、(46.1±2.6)ng/ml,均明显高于预后良好组的(786.4±72.3)pg/ml、(1.4±0.8)μg/L、(18.4±1.6)ng/m L,差异具有统计学意义(P<0.05)。BNP水平与S100B呈正相关(r=0.22,P=0.003<0.05),与NSE呈正相关(r=0.31,P=0.001<0.05)。结论急性心衰预后不良患者BNP升高,同时伴有S100B、NSE水平上升,并与之呈正相关,这可能是急性心衰患者意识障碍的病理基础。

贵州省39个县(区)百合科植物物种多样性及药用分析

为研究贵州省39个县(区)百合科植物物种多样性,进而为贵州省百合科植物种质资源保护性开发及合理利用提供依据,基于贵州省第四次中药资源普查馆藏标本记录,获得贵州省39个县(区)百合科植物总目录,结合《中国药典》对百合科植物分布情况、物种多样性及药用价值等进行分析。结果表明,百合科植物共计32属130种,主要分布在海拔500~1500 m的区域;物种数量最多的是道真县;属数量最多的县区是贵阳市乌当区,且菝葜属数量最多;入药部位以根及根茎类入药居多,功效以补虚药为主;贵州省39个县(区)的百合科植物中,百合、黄精、菝葜、吉祥草、重楼等植物具有较大的开发利用潜力。

A Comparative Study on Photosynthetic Characteristics of Dryopteris fragrans and Associated Plants in Wudalianchi City,Heilongjiang Province,China

While comparing photosynthetic characteristics of Dryopteris fragrans(L.) Schott to those of several commonly associated plants in its native community, coordination between D. fragrans and its environment was observed. The diurnal net photosynthetic rate(Pn) varied dramatically for all the plants studied. D. fragrans, Woodsia ilvensis and Urtica angustifolia all exhibited unimodal type Pn variation, with low Pn, weak photosynthetic capacity, and dramatic maximal photosynthesis(Pmax) changes. When compared to values for its associated plants, D. fragrans values were of intermediate level, indicating difficulty in adapting to its environment. Moreover, the nitrate reductase activity of D. fragrans was higher than that of only one species, Artemisia gmelinii. With increasing leaf maturity and chlorophyll content, D. fragrans exhibited declining LCP(light compensation point) and a relatively low LSP(light saturation point). Because of its overall relatively weak photosynthetic capacity, D. fragrans exhibited narrow ecological amplitude with respect to light adaptation.