黄甲软肝颗粒对人血白蛋白致免疫性肝纤维化模型大鼠的影响

目的观察黄甲软肝颗粒对人血白蛋白( human serum albumin,HSA)所致的Wistar大鼠免疫性肝纤维化的保护作用。方法采用体内实验,将72只雄性大鼠随机分成阴性对照组、模型组、阳性药组、黄甲软肝高、中以及低剂量组剂量组,建立HSA致大鼠免疫性肝纤维化模型,计算肝、脾系数,测定血清中肝纤维化标志物含量、丙氨酸氨基酸转移酶( ALT) 、天门冬氨酸转移酶( AST)等相关生化指标,并检查肝脏病理形态改变。结果与模型组比较,黄甲软肝三个剂量组大鼠血清透明质酸( HA)含量显著降低;高剂量组血清层粘连蛋白( LN) 、Ⅲ型前胶原( PCⅢ )水平、ALT 和 AST 显著降低;高剂量组及中剂量组肝纤维化病变明显减轻。 结论 黄甲软肝颗粒能显著改善 HSA 所致的免疫性肝纤维化大鼠的肝纤维化程度。     

HPLC测定苦参配方颗粒中苦参碱与氧化苦参碱含量

采用高效液相色谱法,以氨基键合硅胶为填充剂,以乙腈-无水乙醇-3%磷酸溶液(80:10:10)为流动相,检测波长为220 nm,建立了一种可同时测定苦参配方颗粒中苦参碱与氧化苦参碱含量的方法。结果表明:苦参碱回归方程为Y=499.412 2X-8.070 1,R=0.999 9,线性范围为0.158～1.580μg。氧化苦参碱回归方程为Y=557.152 4X-15.568 8,R=0.999 9,线性范围为0.1 68 6～1.686 0μg。苦参配方颗粒中苦参碱和氧化苦参碱的总量的平均含量为4.60%,回收率在98%～103%之间,RSD为1.52%。     

感冒双解颗粒解热作用研究

目的 研究感冒双解颗粒解热作用.方法 采用大鼠干酵母和家兔细菌内毒素解热模型,给予高、中、低剂量的感冒双解颗粒浸膏粉,观察感冒双解颗粒对发热模型动物体温的影响,考察解热作用强度及时程.结果 感冒双解颗粒浸膏粉高剂量组(1.7g浸膏粉/kg)在给药后1.5～4 h能明显抑制干酵母模型大鼠体温升高,降温幅度约为0.7℃,而...     

Serglycin – Structure and biology

Serglycin is a proteoglycan found in hematopoietic cells and endothelial cells. It has important functions related to formation of several types of storage granules. In connective tissue mast cells the covalently attached glycosaminoglycan is heparin, whereas mucosal mast cells and activated macrophages contain oversulfated chondroitin sulfate (type E). In mast cells, serglycin interact with histamine, chymase, tryptase and carboxypeptidase, in neutrophils with elastase, in cytotoxic T cells with granzyme B, in endothelial cells with tissue-type plasminogen activator and in macrophages with tumor necrosis factor-α. Serglycin is important for the retention of key inflammatory mediators inside storage granules and secretory vesicles. Serglycin can further modulate the activities of partner molecules in different ways after secretion from activated immune cells, through protection, transport, activation and interactions with substrates or target cells. Serglycin is a proteoglycan with important roles in inflammatory reactions. Received 2 October 2007; received after revision 7 November 2007; accepted 12 November 2007     

The effect of αB-crystallin and Hsp27 on the availability of translation initiation factors in heat-shocked cells

The mechanism of the translational thermotolerance provided by the small heat shock proteins (sHsps) αB-crystallin or Hsp27 is unknown. We show here that Hsp27, but not αB-crystallin, increased the pool of mobile stress granule-associated enhanced green fluorescent protein (EGFP)-eukaryotic translation initiation factor (eIF)4E in heat-shocked cells, as determined by fluorescence recovery after photobleaching. Hsp27 also partially prevented the sharp decrease in the pool of mobile cytoplasmic EGFP-eIF4G. sHsps did not prevent the phosphorylation of eIF2α by a heat shock, but promoted dephosphorylation during recovery. Expression of the C-terminal fragment of GADD34, which causes constitutive dephosphorylation of eIF2α, fully compensated for the stimulatory effect of αB-crystallin on protein synthesis in heat-shocked cells, but only partially for that of Hsp27. Our data show that sHsps do not prevent the inhibition of protein synthesis upon heat shock, but restore translation more rapidly by promoting the dephosphorylation of eIF2α and, in the case of Hsp27, the availability of eIF4E and eIF4G. Received 9 December 2005; received after revision 16 January 2006; accepted 23 January 2006     

栉孔扇贝卵母细胞卵黄发生的研究

运用光镜和电镜技术，研究栉孔扇贝（Ｃｈｌａｍｙｓｆａｒｒｅｒｉ）卵黄的发生，探讨卵黄粒形成的途径．扇贝的卵子，在卵黄发生期间５种细胞结构组分，即线粒体、内质网、高尔基体、溶酶体和质膜外突的微绒毛参与了卵黄粒的形成．     

糖尿病小鼠胰腺腺泡细胞的超微结构和酶原颗粒的定量分析

本文用四氧嘧啶将小鼠建造成糖尿病动物模型。８周后，取胰尾组织作电镜观察，对腺泡细胞的超微结构和酶原颗粒的定量分析进行了研究。结果表明：糖尿病模型小鼠胰腺腺泡细胞中粗面内质网扩张、脱颗粒；线粒体峪紊乱或断裂；胞浆内出现许多髓样小体；酶原颗粒数（Ｎ值）减少（Ｐ＜０．０１），体密度（Ｖｖ值）降低（Ｐ＜０．０１）。显示：实验性糖尿病小鼠胰腺腺泡细胞超微结构和酶原的合成受到一定程度的损害。     

处理油田含聚废水的微生物研究

在油田普遍采用聚合物驱三次采油新技术的同时也产生了含聚丙烯酰胺（PAM）污水的处理问题。含PAM污水的特点是粘度大、含油多、乳化油稳定，故传统的废水处理方法及设施难以使该污水处理达到回注水水质的标准。对模拟含聚废水驯化的好氧颗粒污泥内微生物的研究将有助于油田含聚废水生物处理技术的开发。采用人工模拟油田含聚废水在实验室内驯化好氧颗粒污泥，结果表明好氧颗粒污泥对含聚驱采出水有良好的适应性。在水力停留时间为144h时，好氧颗粒污泥可以将进水中的聚丙烯酰胺由350mg/L降低至150mg/L，去除率达到57％。对颗粒污泥内的优势微生物研究表明，在模拟含聚废水中对PAM起主要降解作用的微生物为产碱假单胞菌。     

玉液颗粒制剂工艺的研究

对玉液颗粒制剂工艺参数进行了研究,选取了最优的制备工艺参数.利用正交设计,采用君药黄芪的主要成分黄芪甲苷以及提取物的干膏收率为指标,筛选了工艺参数.确定最佳提取工艺条件为加8倍量的水提取3次,每次1 h;最佳一步制粒工艺为泵药速度3 000 m L/h,药液相对密度1.08~1.06 mg/m L和进风温度170℃;一步制粒的主要技术参数为泵进药液速度55~60 m L/min;喷雾过程压力0.3 MPa;蒸汽压力0.5 MPa;进料温度为55~50℃;进风口温度为76~86℃;出风口温度为50~45℃.本实验选取的工艺参数条件适用于玉液颗粒的工业生产.     

几种颗粒剂防治草坪地下害虫蛴螬效果研究

研究四种颗粒剂对草坪地下害虫蛴螬的防治效果,筛选对蛴螬高效、环保的颗粒剂。调查根埋施药后19d、31d、38d防效,进行数据分析。试验结果表明：10%丁硫克百威颗粒剂与1%联苯噻虫胺颗粒剂对蛴螬的防效较好,2%吡虫啉缓释颗粒剂对蛴螬的防效较差。10%丁硫克百威在19d后防治效果显著,1%联苯噻虫胺颗粒剂在31d后开始显著。10%丁硫克百威颗粒剂与1%联苯噻虫胺颗粒剂可以替代呋喃丹用来防治地下害虫蛴螬。