高寒地区腹泻犊牛的血气与血液细胞分析

目的:探讨动物腹泻时血液生理生化指标的变化,为临床诊断提供依据.方法:运用i-STAT血气分析仪,测定了15例腹泻犊牛血液pH、Hb、TCO2、PCO2、PO2、HCO3-、SO2、BEecf、HcT、血液细胞的MCH、MCHC、RDW、WBC、LYM、MID、GRN、RBC、HGB、HcT、MCV和电解质Na+、K+指标.结果:腹泻犊牛的PCO2、HcT、SO2、MCHC、HGB、WBC(P<0.01)、MID(P<0.01)、HcT、MCV显著高于健康牛;而MCH、GRN、RBC也都低于健康奶牛.结论:犊牛腹泻时其血液细胞成分和血气指标发生显著的变化.     

扶正祛瘀治疗功能性子宫出血

功能性子宫出血是妇科常见病之一,属于祖国医学崩漏范畴,临床应用扶正祛瘀法为主要治则治疗本病,获得满意疗效,具体分型为:(1)肾虚血瘀型:治以补肾活血行瘀;(2)肝肾阴虚型:治以滋养肝肾、活血化瘀;(3)脾肾气虚型:治以补脾温肾佐以化瘀。本组治愈44例,占59.4%,显效16例,占21.6%,好转10例,占13.5%,无效4例,占5.4%,总有效率94.6%。     

Effects of nitrogen sources and glucose on the consumption of ethylene and methane by temperate volcanic forest surface soils

There is limited knowledge with regard to the consumption of ethylene (C2H4) and methane (CH4) in volcanic forest soils containing low microbial carbon-to-organic carbon ratio, and to the responses of both consumptions to nitrogen and carbon additions. Temperate volcanic forest surface soils under three forest stands (e.g. Pinus sylvestris L., Cryptomeria japonica and Quercus serrata) were used to compare CH4 and C2H4 consumption by forest soils, and to study the effects of nitrogen sources and glucose on both consumptions. There was a good parallel between CH4 and C2H4 consumption by for- est soils, but mineralization reduced CH4 consumption rather than C2H4 consumption in forest soils, particularly in a Pinus forest soil. The stimulatory effect of glucose addition on both CH4 and C2H4 consumption by forest soils was increased by increasing the pre-incubation period after glucose addi- tion, and a largest stimulation occurred in the Pinus forest soil. The addition of KNO3-N at the rate of 100 μg·g1 significantly reduced the consumptions of both C2H4 and CH4 by forest soils (P≤0.05). In the presence of urea plus dicyandiamide, the consumption rates of C2H4 and CH4 by forest soils were higher than those in the KNO3-N and urea-N treated soils at the same N rate (P≤0.05), but were similar to those of the control. Hence, under experimental conditions, there was a strong inhibitory effect of NO3 rather than NH4 addition on the CH4 and C2H4 consumption in these forest soils. When amount of the added NO3-N increased up to more than 2―3 times the soil initial NO3-N concentrations, both C2H4 and CH4 consumption rates were reduced to 10%―20% of the rates in soils without nitrate addition. By comparing the three forest stands, it was shown that there was a smallest effective concentration of the added nitrate that could inhibit C2H4 and CH4 consumption in the Pinus forest soil, which indicated that C2H4 and CH4 consumption of the soil was more sensitive to NO3-N addition.     

血淮淋巴细胞计数与小儿先天性心脏病并发症发生的关系探讨

为探讨小儿先天性心脏病并发症的发生与血液淋巴细胞的相互关系 ,笔者将 39例住院的先天性心脏病患儿分为 2组进行比较研究 ,血液淋巴细胞计数百分率≥ 2 0 .3%者为A组 ,≤2 0 .2 %者为B组 .结果表明 :B组与A组比较 ,前者的心力衰竭、心律失常发生率显著升高 (P<0 0 5 ) .提示 :先天性心脏病患儿的血液淋巴细胞降低易并发心力衰竭、心律失常 .     

决明子提取物降脂作用的研究

探讨决明子溶剂分部提取物实验性高脂血症大鼠血脂的影响。将大鼠制成高脂血症模型，以多烯康为阳性对照，测定决明子粉及其不同溶剂的提取物给药后，对高脂血症大鼠的血清总胆固醇（TC）、甘油三酯（TG）、高密度脂蛋白（HDL）和低密度脂蛋白（LDL）含量的影响。结果显示决明子粉、乙酸乙酯提取物、正丁醇提取物、乙醇提取物和水提取物均可使高脂血症大鼠的TC明显降低（P＜0.05或P＜0.01)；且能显著升高HDL水平（P＜0.05或P＜0.01)。表明决明子溶剂分部提取物的降脂作用随提取溶剂极性的增大而增强。推测决明子中能有效降低血脂的主要成分可能是甙类、蛋白质、多糖等成分。     

粪产碱杆菌青霉素酰化酶在枯草芽孢杆菌中的表达优化

在5L发酵罐中进行了表达粪产碱杆菌青霉素G酰化酶的重组枯草杆菌WB600(pMA5)的发酵研究。实验表明，发酵液中的葡萄糖浓度和菌体产酶能力密切相关，维持低葡萄糖水平，可以提高枯草杆菌WB600(pMA5)青霉素G酰化酶的合成能力。采用混合碳源进行发酵，在生长阶段流加葡萄糖，并维持低浓度，在发酵12h菌体浓度达到约13．8g／L时停止流加葡萄糖，使茵体利用发酵液中的可溶性淀粉作为碳源，避免葡萄糖的代谢副产物对茵体产酶能力的抑制，青霉素G酰化酶的表达水平从原来的55u／L提高到582u／L。     

门控心血池断层图像的Fourier分析

针对目前缺乏对门控心血池图像进行室壁运动和心脏功能进行定量分析的方法,提出一种新的研究方法:对门控心血池投影数据进行三维重建,得到心周期中不同时相的断层图像组;然后针对每个断层对各个时相的图像进行时间域的Fourier分析,得出心血池的三维幅度图像和相位图像,从中提取有关病人室壁运动和心脏功能的各种定量信息。显示出来的二维形式的相位图像和幅度图像具有良好的质量和较低的噪声。这种方法可以用来对左心室的收缩性和同步性进行三维的定量评估。     

健身长跑对中老年人血脂代谢的影响

测量和比较45例和对照组44例进行血脂、脂蛋白及载脂蛋白水平的差异.试验结果显示,两组间胆固醇(TC)、甘油三酯(TG)水平无显著差异(P>0.05),健身跑组低密度脂蛋白胆固醇(LDL C)值则显著高于对照组(P<0.05),高密度脂蛋白(LDL C)高于对照组(P<0.05).研究结果表明,经过长跑训练,对血脂异常具有良好的调节作用.     

血管的三维重建模型

给出了根据血管连续切片图像在电脑中重建该血管三维图像的数学模型的方法，对重建图像失真(误差)的产生原因进行了分析并给出了相应的处理方法，构造了评估重建图像效果的两个判别函数，最后应用给出的方法对给出的100张平行血管切片扫描图像在电脑中重建了该血管三维图像。     

Protein P37 of mycoplasma hyorhinis induces secretion of TNF-α from human peripheral blood mononuclear cells

High mycoplasmal infection ratio in gastric cancer tissues suggests a possible association between my-coplasma infection and tumorigenesis.Because TNF-α plays an important role in carcinogenesis caused by microbes in-fection and P37 is a major immunogen of mycoplasma hy-orhinis(M.hyor.),investigating whether P37 could induce expression and secretion of TNF-α will be very significant fo elucidate the possible molecular mechanism of gastric car-cinogenesis involved with M.hyor.At the present study,we cloned full gene of p37 by PCR and mutated the 7 codes of TGA into TGG firstly,then expressed the P37 protein suc-cessfully with pGEX-4T-1 vector in E.coli,which was veri-fied with Western bolt.By RT-PCR and sensitive L929 cell toxic assay,we found that P37 protein could induce expres-sion and secretion of TNF-α from human peripheral blood mononuclear cells,and the inducing activity of P37 could be dramatically blocked by McAb PD4.These results suggest that the induction of TNF-α secretion by P37 probably plays an importan role in diseases caused by M.hyor.infection and needs to be further investigated.