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Putative Genes Involved in Saikosaponin Biosynthesis in Bupleurum Species  [PDF]
Tsai-Yun Lin,Chung-Yi Chiou,Shu-Jiau Chiou
International Journal of Molecular Sciences , 2013, DOI: 10.3390/ijms140612806
Abstract: Alternative medicinal agents, such as the herb Bupleurum, are increasingly used in modern medicine to supplement synthetic drugs. First, we present a review of the currently known effects of triterpene saponins-saikosaponins of Bupleurum species. The putative biosynthetic pathway of saikosaponins in Bupleurum species is summarized, followed by discussions on identification and characterization of genes involved in the biosynthesis of saikosaponins. The purpose is to provide a brief review of gene extraction, functional characterization of isolated genes and assessment of expression patterns of genes encoding enzymes in the process of saikosaponin production in Bupleurum species, mainly B. kaoi. We focus on the effects of MeJA on saikosaponin production, transcription patterns of genes involved in biosynthesis and on functional depiction.
北柴胡二代新品种"中柴2号"和"中柴3号"的选育研究  [PDF]
郑亭亭,隋春,魏建和,金钺,褚庆龙,杨成民
中国中药杂志 , 2010,
Abstract: 目的:选育整齐度高、商品性好、皂苷含量高的北柴胡二代新品种。方法:从北柴胡一代品种"中柴1号"群体中筛选优良种质,单株选择法,选育优良品种。以形态性状、农艺性状和品质性状为指标,考察历代选育材料,开展品系比较试验和区域试验。结果:选育的北柴胡新品种"中柴2号"和"中柴3号"的整齐度显著提高,深色根比率分别达83.2%,89.9%,柴胡皂苷含量分别达到1.3%,1.0%。结论:选育的"中柴2号"和"中柴3号"具有整齐度高、根色深、有效成分含量高等优点,达到了选育目的。
Estrogen-like effects of saikosaponin-d in mice  [cached]
Yong LI
Zhong Xi Yi Jie He Xue Bao , 2009,
Abstract: Objective: To investigate whether saikosaponin-d (SSd) had estrogen-like effects in mice.Methods: Forty female BALB/c mice were randomly divided into sham-operated group, untreated group, estradiol (E2) group, low-dose SSd (5 mg/kg) group and high-dose SSd (50 mg/kg) group, with 8 mice in each group. Except the sham-operated group, bilateral ovariectomy was performed in the mice under anesthesia with 1.25% pentobarbital (40 mg/kg). Ten days after the operation, the mice were administered with corresponding medicine by intraperitoneal injection once each day. Two weeks later, the rates of epithelial cornified cells of vagina in the mice were examined, and the body weights, uterus weights and adrenal weights were also measured. Twelve hours after the final administration, serum estradiol levels were tested by radioimmunoassay.Results: The rates of epithelial cornified cells of vagina in mice in the high-dose SSd group and the low-dose SSd group were higher than that in the untreated group (P<0.05), but were lower than that in the E2 group (P<0.05). Serum E2 levels of mice in the SSd groups were higher than that in the untreated group (P<0.05), but the serum E2 level of the low-dose SSd group was lower than that in the E2 group (P<0.05). Uterus and adrenal indexes of mice in the SSd groups were higher than that in the untreated group (P<0.05), however, they were lower than that in the E2 group (P<0.05). The body weights of the mice in the high-dose SSd group and the E2 group were lower than that in the untreated group (P<0.05).Conclusion: SSd has weak estrogen-like effects in mice and may be a potential phytoestrogen.
棉柴栽培白灵菇试验  [PDF]
刘宇,王兰青,王守现,许峰,赵爽,耿小丽
北方园艺 , 2013,
Abstract: 以“中农一号”白灵菇菌株为试材,研究了发酵与未发酵棉柴对白灵菇菌丝生长的影响。结果表明发酵棉柴与未发酵棉柴栽培配方均有利于白灵菇菌丝的生长,在20%~80%范围内,白灵菇的菌丝生长速度与配方中发酵棉柴的添加量成正比;在40%~60%范围内,白灵菇的菌丝生长速度与配方中未发酵棉柴的添加量成反比;棉柴添加量在20%~40%时,白灵菇产量均高于对照,以未发酵棉柴添加量为20%的配方⑤(未发酵棉柴20%、棉籽皮60%、麸皮15%、玉米粉3%、糖1%、石膏1%)生物学效率最高。
民用柴炉柴灶热性能测试方法的研究  [PDF]
祝永昌?,耿惠兰?,杨铁牛?
西北农林科技大学学报(自然科学版) , 1989,
Abstract: 本文报道了在民用柴炉柴灶热性能的测试中,实现定压加热;锅水达到和偏离沸点时的确切测定方法;温度计的正确选择和使用;绘制测试曲线和计算热效率的正确方法,以及对推广或评选民用柴炉柴灶的评价参数等问题。
多途信道中声屏蔽及声聚焦  [PDF]
惠俊英,余赘,惠娟,滕超
哈尔滨工程大学学报 , 2009,
Abstract: 针对传统阵处理无法分辨同~方向上2个点源的缺陷,提出了多途信道中声屏蔽技术.将声屏蔽技术应用于抗拖船干扰,把拖曳线列阵接收的拖船干扰和同方向的目标信号在频域通过一个屏蔽、聚焦权滤波器,在对干扰屏蔽的同时,对目标聚焦.仿真结果表明,干扰源的辐射噪声被显著抑制,而所期望的目标信号清晰可见,其输出相干信噪比大幅度提高,该技术在抑制拖船干扰的同时可以有效消除在该方向的探测盲区.
豆腐柴叶的毒性  [PDF]
蒋立科,王世强
食品科学 , 1990,
Abstract: ??用豆腐柴叶对小白鼠进行毒性试验,结果表明本品毒性很低,长期饲养未见动物组织病理学改变或其它异常反应,证实民间用它的叶子制作成观音豆腐(guanyin—doufu)作为食用是安全的。试验还观察到以豆腐柴叶喂养小白鼠,可使动物平均体重及体重增长率均明显高于对照组而动物脂肪量不增加,表明本品具有较高营养价值。
复倒谱域水声信道多途抑制技术  [PDF]
付进,许婉琰,王燕,梁国龙
哈尔滨工程大学学报 , 2015, DOI: 10.11990/jheu.201406046
Abstract: 水下声信道因边界反射及介质不均匀性而呈现多途特性,如何采取有效措施抑制信道多途影响一直以来都是水声领域的难点和热点问题。基于同态滤波基本原理,研究了水声多途信道的复倒谱特性,据此提出了一种适用于将信道与信号分离的复倒谱域特征滤波器构建方法,并与常用的低通特征滤波器、梳状特征滤波器进行了对比分析。研究结果表明,提出的方法可有效抑制信道多途,且与上述2种特征滤波器比较,所提方法具有构建方法简易、重构信号误差较小等特点,具有工程应用价值。
安德烈·关纳  [PDF]
林天健
力学与实践 , 1996, DOI: 10.6052/1000-0992-1996-128
Abstract: 安德烈·关纳林天健(珠江水利委员会勘测设计研究院,广州510611)1959年12月2日,当时世界上最薄的拱坝(坝高66.5m)马尔帕塞双曲拱坝溃决,全世界为之震惊.尽管失事后法国农业部曾两次组织专门委员会进行调查并提出报告,认为该坝的设计是正确的,...
THE RECEPTOR AGONIST-LIKE EFFECTS OF SAIKOSAPONIN(I) IN ISOLATED RAT PANCREATIC ACINAR CELLS
柴胡皂甙(I)对胰腺腺泡的拟膜受体激动剂作用

杨文修,余奕,张文正,王辉,赵玉英,梁鸿
生物物理学报 , 2001,
Abstract: The effects of Bt2-cGMP and GDP on Saikosaponin and CCK-8 stimulated amylase secretion and i increase were investigated in isolated rat pancreatic acinar cells. Bt2-cGMP inhibited both SA(I) and CCK-8-induced amylase secretions in a dose-dependent way. GDP also inhibited markedly saikosaponin-induced amylase secretion. SA(I) induced i increase in single pancreatic acinar cell was different from that induced by CCK-8: the rising phase of i increase was slow to develop, and lasted longer. In addition, there was a secondary increase after the initial peak. GDP significantly inhibited SA(I)-induces initial peak of i increase. These data indicate that SA(I) may activate i increase and amylase secretion via a direct action on the cell surface receptor.
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