金耳发酵液对糖尿病小鼠降血糖作用的研究     

苏槟楠  王常青  韩建欣  刘彦萍  徐宏英  王慕华  梁秋兰 《中国食用菌》2006,25(5):43-44

研究表明，金耳发酵液对四氧嘧啶诱导的糖尿病小鼠有降血糖作用，同模型对照组相比．大剂量组差异显著（P〈0.05）；同时，大剂量组对糖尿病小鼠摄食、饮水量的减少及体重的增加均有显著影响（P〈0.05）  相似文献   

影响石榴坐果的几个因素     

徐鹏  石祥  李艳秋 《北方果树》2006,(1):39-40

石榴树花量大，花期长，但一般情况下坐果率比较低，影响产量和效益。为提高石榴坐果率，达到丰产稳产的目的，我们于2002-2004年在峄城区棠阴乡小庄子村石榴丰产园就影响石榴坐果的几个关键因素进行了调查研究。现将调查研究结果报告如下。  相似文献   

甜樱桃不同品种贮藏性的研究   总被引：2，自引：0，他引：2  

徐凌  郝义  郝树池  王岩  吕仁强 《北方果树》2006,(4):19-20

通过试验,在常规栽培管理条件下,采用自行研制的甜樱桃专用保鲜剂和专用保鲜袋,预冷48h,于0±0.5℃下冷藏,拉宾斯、雷尼、巨红表现为最耐贮藏,红灯、佳红、红艳较耐贮藏,萨米脱和斯坦勒最不耐贮藏。  相似文献   

镧对巴西虫草生长的影响     

杨荣玲  赵祥杰  肖更生  吴晓玉  徐玉娟  刘学铭 《食用菌学报》2006,13(3):33-40

冬虫夏草是一种名贵的滋补品,虫草中含有的多糖、虫草酸、虫草素及各类氨基酸等具有扩张气管、镇静、抗各类细菌、降血压的功效。1988年,广东省农业科学院蚕业与农产品加工研究所的研究人员在广东某自然保护区采集到了6种虫草野生株,从中筛选到一株可以感染家蚕的虫草菌,经鉴定  相似文献   

重金属镉在香菇品种中的积累比较   总被引：2，自引：0，他引：2  

徐丽红  吴应淼  叶长文  陈俏彪  王钢军 《食用菌学报》2006,13(4):91-94

选择出口量最大的香菇为材料，分析了三个不同香菇品种对有害重金属镉的积累．结果表明，3个香菇品种对重金属Cd的富集能力为；庆科20〉241—1〉9015，建议可以9015为抗重金属Cd的栽培品种。  相似文献   

Effect of atorvastatin on ventricular remodeling in spontaneous hypertension rats     

TANG Sheng-xing  QI Shu-shan  ZHOU Sheng-hua  XU Hao  WANG An-cai 《园艺学报》2006,22(8):1535-1539

AIM：To explore the effect of atorvastatin on cardiac remodeling in spontaneous hypertension rats (SHR).METHODS：Twelve spontaneous hypertension rats were divided randomly into two groups：group of atorvastatin (atorvastatin 50 mg·kg^-1·d^-1) and group of SHR (0.5% mucilage of arabic gum,10 mL·kg^-1·d^-1).Additionally,six male Wistar-Kyoto rats (0.5% mucilage of arabic gum,10 mL·kg^-1·d^-1) were selected as control group.Systolic blood pressure was assessed with the tail-cuff method.After six weeks,entire heart,and left ventricle were weighed.The left ventricular weight index was calculated and myocardial hydroxyproline and collagen protein concentration were measured.The serum high sensitivity CRP (hs-CRP) was measured by nephelometry.The localization of vascular cell adhesion molecule (VCAM) in myocardium was investigated by immunohistochemistry assays.The level of NF-κB mRNA expression was detected with in situ hybridization.Ultrastructure in cardiac muscle was also observed under transmission electron microscope.RESULTS：The expression of myocardial VCAM and NF-κB in SHR group was stronger than that in WHY group.Compared with SHR group,entire heart weight,left ventricular weight,left ventricular weight index,serum hs-CRP,myocardial hydroxyproline and collagen protein concentration was decreased,the expression of myocardial VCAM and NF-κB in SHR group was weaker than that in atorvastatin treatment group.The myocardial pathological change such as incomplete karyotheca in cardiac muscle cells,no clear of transverse striation and the mess in myofibril alignment,and hyperplasy in interstitial collagen fibre were observed in SHR group and these changes were improved in atorvastatin treatment group.CONCLUSION：The cardiac remodeling in SHR is improved by atorvastatin.The molecular mechanism may be related to its down-regulating the expression of VCAM protein and NF-κB and inhibiting myocardial chronic inflammation.  相似文献   

he effects of constant magnetic field on apoptosis,adhesion molecule expression in endothelial cells and their adhesion rates with monocytes     

CHENG He-xiang  ZHOU Lian  XU Ke-wei  JIA Guo-liang  WANG Hai-chang  GUO Wen-yi  ZHANG Rong-qing 《园艺学报》2006,22(10):1917-1921

AIM: To investigate the effects of constant magnetic field on apoptosis, secretion and expression of intercellular adhesion molecule-1 (ICAM-1) and vascular cell adhesion molecule-1 (VCAM-1) in human umbilical vein endothelial cells (HUVEC), and their adhesion rates with THP-1 monocytes induced by angiotensin Ⅱ (AngⅡ).METHODS: The third passage of cultured HUVEC was used.There were six groups: control group, Ang Ⅱ (10^-6 mol/L) group, Ang Ⅱ with 1, 5, 10 or 20 gausses of constant magnetic field group.Samples were collected 24 h after incubation with or without magnetic field.Apoptosis was determined by terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling (TUNEL) and propidinm iodide staining with flow cytometry.Secretion and expression of ICAM-1 and VCAM-1 were detected by ELISA and immunocytochemistry, respectively.Adhesion rate between HUVEC and THP-1 was measured by counting method.RESULTS: Ang Ⅱ at concentration of 10^-6mol/L induced apoptosis in HUVECs (P<0.05 vs control), whereas in 1, 5, 10 and 20 gausses group, apoptosis of HUVECs was significantly lower than that in Ang Ⅱ group (P<0.05).Ang Ⅱ at concentration of 10-6 mol/L significantly increased secretion and expression of ICAM-1 and VCAM-1 (P<0.05 vs control), whereas secretion and expression of ICAM-1 and VCAM-1 in 1, 5, 10 and 20 gausses group significantly decreased, compared with Ang Ⅱ group (P<0.05).The adhesion rates between HUVEC and THP-1 significantly increased 24 h after incubation of HUVEC with Ang Ⅱ (P<0.05 vs control), in contrast, the adhesion rates between HUVEC and THP-1 in 1, 5, 10 and 20 gausses group significantly decreased, compaed with Ang Ⅱ group (P<0.05).CONCLUSIONS: One gauss to 20 gausses of constant magnetic field antagonizes the effects of Ang Ⅱ on HUVEC, decreases apoptosis and expression of ICAM-1 and VCAM-1 in HUVEC, and also decreases the adhesion rates between HUVEC and monocytes induced by Ang Ⅱ.  相似文献   

Construction and identification of mouse telomerase reverse transcriptase eukaryotic expression vector     

JIANG Nan  CHEN Gui-hua  LU Min-qiang  YANG Yang  CAI Chang-jie  LI Hua  XU Chi  YI Shu-hong  WANG Gen-shu  YI Hui-min  FENG Lian-qiang 《园艺学报》2006,22(5):851-855

  相似文献   

Proliferation and apoptosis of neuroendocrine cells in ovarian epithelial tumors     

JIANG Li-yan  WANG Zi-neng  ZHONG Xue-yun  ZHENG Pei-er  LI Hong  LUO Xin  XU Jian-ping  WANG Xiao-yu 《园艺学报》2006,22(5):856-859

AIM: The purpose of this study was to observe the morphological features of neuroendocrine cells (NECs)， their proliferation and apoptosis in ovarian epithelial tumors, and to discuss their biological and clinical significance. METHODS: 79 specimens of ovarian epithelial tumor samples were collected, of them 20 benign, 18 boderline, 41 milignant tumors, and 22 normal ovaries were investigated immunohistochemically. Chromogranin A was used to detect NECs and their proliferation and apoptosis were examined by double-label staining of chromogranin A and Ki67 or TUNEL. RESULTS: The positive rate of CgA, distribution and staining intensity in ovarian epithelial tumors were higher than those in normal ovary. NECs showed various shapes with neuronoid protuberances stretching to the neighboring cells or basement membrane. Occasionally, they might touch together. No TUNEL positive coexpression in all NECs was observed by double-label staining, but some NECs were coexpressed with Ki67. CONCLUSION: NECs of ovarian epithelial tumors like cancer cells showed a proliferation, but no apoptosis. Their secretion might promote their neighboring non-NECs to proliferate and prevent them from apoptosis.  相似文献   

The protective effect of composite salviae dropping pills on human umbilical vein endothelial cells injured by lipopolysaccharide     

WANG Dong-xia  WANG Xiao-ming  XU Jing-lan 《园艺学报》2006,22(5):933-937

AIM: To observe the function and morphological change of human umbilical vein endothelial cells (HUVECs) treated with lipopolysaccharide (LPS) and composite salviae dropping pills (DSP). METHODS: HUVECs were cultured and incubated within 10 mg/L LPS for 12 hours. Different final concentrations of composite salviae dropping pills (1 g/L, 0.5 g/L, 0.25 g/L, 0.1 g/L) were added before and after LPS treatment. Cell viability, NO, NOS, ET-1 and intracellular calcium were measured. The cells were observed under inverted microscope, inverted phase contrast microscope, laser confocal scanning microscopy and transmission electron microscope. RESULTS: When given after LPS treatment, different final concentrations of composite salviae dropping pills played a protective role (P<0.05), and the concentration of 0.5 g/L was the most effective (P<0.01). When given before LPS treatment, 0.5 g/L and 0.25 g/L of composite salviae dropping pills protected the human vascular endothelial cells (P<0.05), but 1 g/L and 0.1 g/L didn't play a protective role (P>0.05). The HUVECs injured by LPS underwent apparent morphological change after treatment with composite salviae dropping pills. CONCLUSION: Composite salviae dropping pills have an evident protective effect on human umbilical vein endothelial cells exposed to LPS.  相似文献