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359篇 您的检索式:作者名="Zhong Zhen"
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1Effects of Bacillus coagulans supplementation on the growth performance and gut health of broiler chickens with Clostridium perfringens-induced necrotic enteritis显示文摘Background: The poultry industry is in need of effective antibiotic alternatives to control outbreaks of necrotic enteritis(NE) due to Clostridium perfringens.Methods: This study was conducted to investigate the effects of feeding Bacil us coagulans on the growth performance and gut health of broiler chickens with C. perfringens-induced NE. Two hundred and forty 1-day-old broiler chicks were randomly assigned to a 2 × 2 factorial arrangement with two dietary B. coagulans levels(0 or 4 × 109 CFU/kg of diet) and two disease chal enge statuses(control or NE chal enged).Results: NE-induced reduction in body weight gain was relieved by the addition of B. coagulans into broiler diets compared with the NE-infected birds. NE infection damaged intestinal morphological structure, promoted intestinal C.perfringens growth and liver invasion, and enhanced anti-C. perfringens specific sI gA concentrations in the gut and specific IgG levels in serum compared with the uninfected birds. NE infection significantly(P < 0.05) decreased mucin-2(at 14 d post-infection(DPI), tol-like receptor 2(TLR2, at 7 and 14 DPI), TLR4(at 7 and 14 DPI), tumor necrosis factor super family15(TNFSF15, at 7 and 14 DPI), lysozyme(LYZ, at 14 DPI) and fowlicidin-2(at 7 and 14 DPI) mR NA levels, whereas it dramatical y(P = 0.001) increased IFN-γ mR NA levels at 7 DPI. However, chal enged birds fed diets supplemented with B.coagulans showed a significant(P < 0.01) decrease in gut lesion scores, decreased C. perfringens numbers in the cecum and liver, and an increase in fowlicidin-2 mR NA levels in compared with the uninfected birds. In addition, compared with the non-supplemented group, dietary inclusion of B. coagulans improved intestinal barrier structure, further increased specific sI gA levels and alkaline phosphatase(IAP) activity in the jejunum, enhanced the expression of jejunum lysozyme mR NA, and inhibited the growth, colonization, and invasion of C. perfringens; in contrast, it reduced serum-specific IgG concentrations and jejunum IFN-γ mR NA levels.Conclusion: These results indicated that dietary B. coagulans supplementation appeared to be effective in preventing the occurrence and reducing the severity of C. perfringens-induced NE in broiler chickens.Yuanyuan Wu Yujing Shao Bochen Song Wenrui Zhen Zhong Wang Yuming Guo Muhammad Suhaib Shahid Wei Nie 2018Journal of Animal Science and Biotechnology2018,9,2:31
2Aggregation-induced emission: a coming-of-age ceremony at the age of eighteen显示文摘Aggregation-induced emission(AIE) has drawn great attention worldwide for its unique optical phenomenon and huge potential applications. Since coined by Ben Zhong Tang et al. in 2001, AIE has been deeply investigated and widely utilized in many important areas, such as organic light-emitting diode(OLED), sensor, and bio-imaging. Herein, we highlight some important progress of AIE in these eighteen years, including the exploration of internal mechanism and potential applications. Furthermore,some other interestingly emissive behaviors, originating but distinguishing from the AIE concept, are presented. It is anticipated an overall understanding about AIE could be easily caught from this short review for scientists, no matter whether they are involved in this exciting and rising research area or not.Jie Yang Zhenguo Chi Weihong Zhu Ben Zhong Tang Zhen Li 2019Science China Chemistry2019,62,9:25
3NEW METHOD OF SIMULATING CONCENTRATED DRAIN HOLES IN SEEPAGE CONTROL ANALYSIS显示文摘In this paper, based upon the basic solution of sink, the approximate solution of single drain hole in finite elements is derived by use of the superposition principle. Then, the theoretical solution is extended to the case of some drain holes in one finite element, and the method is used in seepage control analysis with quick convergence and high accuracy. On the other hand, if the positions of the drain holes are changed, only some control factors of drain holes are changed, but the finite element grid need not to be reformed. Therefore, the method is more suitable in optimal research of seepage control.Zhan Mei li, Su Bao yu , Liu Jun yong, Shen Zhen zhong College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, P.R.China (Received Aug.1, 1998) 1999Journal of Hydrodynamics1999,11,3:22
4IL-17 response mediates acute lung injury induced by the 2009 Pandemic Influenza A (HIN1) Virus显示文摘Chenggang Li Penghui Yang Yang Sun Taisheng Li Chen Wang Zhong Wang Zhen Zou Yiwu Yan Wei Wang Chen Wang Zhongwei Chen Li Xing Chong Tang Xiangwu Ju Feng Guo Jiejie Deng Yan Zhao Peng Yang Jun Tang Huanling Wang Zhongpeng Zhao Zhinan Yin Bin Cao Xiliang Wang Chengyu Jiang 2012Cell Research2012,22,3:22
5Generation of haploid embryonic stem cells from Macaca fascicularis monkey parthenotes显示文摘在从经由单性生殖和男性单性生殖的老鼠的胚胎的干细胞(haESCs ) 启用了在修改基因的动物的哺乳动物的房间和代的基因屏蔽的 haploid 的推导的最近的成功。然而, haESCs 是否能从首领被导出,仍然保持未知。这里,我们从 Macaca fascicularis 猴子的单性生殖的胚囊报导 haESCs 的推导。这些房间,作为 PG-haESCs 称为,是 pluripotent 并且能在 vitro 或在 vivo 区分到三胚胎的细菌层的房间。有趣地,一根猴子 PG-haESC 线(MPH1 ) 的 haploidy 与另一个(MPH2 ) 的相比是更稳定的,作为没有排序的激活荧光的房间(FACS ) ,由 haploid 房间的存在出现超过 140 天 haploid 房间的丰富。重要地,转基因的猴子 PG-haESC 线能被 lentivirus- 和 piggyBac 产生调停 transposon 的基因转移。而且,基因屏蔽在猴子 PG-haESCs 是可行的。我们的结果证明 PG-haESCs 能从猴子被产生,提供为在首领的基因分析的一个理想的工具。Hui Yang Zhen Liu Yu Ma Cuiqing Zhong Qi Yin Chikai Zhou Linyu Shi Yijun Cai Hanzhi Zhao Hui Wang Fan Tang Yan Wang Chenchen Zhang Xin-yuan Liu Dongmei Lai Ying Jin Qiang Sun Jinsong Li 2013Cell Research2013,23,10:22
6Resuscitation therapy for traumatic brain injuryinduced coma in rats:mechanisms of median nerve electrical stimulation显示文摘In this study, rats were put into traumatic brain injury-induced coma and treated with median nerve electrical stimulation. We explored the wake-promoting effect, and possible mechanisms, of median nerve electrical stimulation. Electrical stimulation upregulated the expression levels of orexin-A and its receptor OX1 R in the rat prefrontal cortex. Orexin-A expression gradually increased with increasing stimulation, while OX1 R expression reached a peak at 12 hours and then decreased. In addition, after the OX1 R antagonist, SB334867, was injected into the brain of rats after traumatic brain injury, fewer rats were restored to consciousness, and orexin-A and OXIR expression in the prefrontal cortex was downregulated. Our findings indicate that median nerve electrical stimulation induced an up-regulation of orexin-A and OX1 R expression in the prefrontal cortex of traumatic brain injury-induced coma rats, which may be a potential mechanism involved in the wake-promoting effects of median nerve electrical stimulation.Zhen Feng Ying-jun Zhong Liang Wang Tian-qi Wei 2015Neural Regeneration Research2015,10,4:23
7Preliminary results of environmental monitoring of the natural gas hydrate production test in the South China Sea显示文摘Natural gas hydrate (NGH)is considered as one of the new clean energy sources of the 21st century with the highest potential.The environmental issues of NGH production have attracted the close attention of scientists in various countries.From May 10 to July 9,2017,the first offshore NGH production test in the South China Sea (SCS)was conducted by the China Geological Survey.In addition,environmental security has also been effectively guaranteed via a comprehensive environmental monitoring system built during the NGH production test.The monitoring system considered sea-surface atmosphere methane and carbon dioxide concentrations,dissolved methane in the sea water column,and the seafloor physical oceanography and marine chemistry environment.The whole process was monitored via multiple means, in multiple layers,in all domains,and in real time.After the production test,an environmental investigation was promptly conducted to evaluate the environmental impact of the NGH production test. The monitoring results showed that the dissolved methane concentration in seawater and the near-seabed environment characteristics after the test were consistent with the background values,indicating that the NGH production test did not cause environmental problems such as methane leakage.Jian-liang Ye Xu-wen Qin Hai-jun Qiu Qian-yong Liang Yi-fei Dong Jian-gong Wei Hai-long Lu Jing-an Lu Yao-hong Shi Chao Zhong Zhen Xia 2018China Geology2018,1,2:19
8Prevalence, awareness, treatment, and control of hypertension in the non-dialysis chronic kidney disease patients显示文摘ZHENG Ying CAI Guang-yan CHEN Xiang-mei FU Ping CHEN Jiang-hua DING Xiao-qiang YU Xue-qing LIN Hong-li LIU Jian XIE Ru-juan WANG Li-ning NI Zhao-hui LIU Fu-you YIN Ai-ping XING Chang-ying WANG Li SHI Wei LIU Jian-she HE Ya-ni DING Guo-hua LI Wen-ge WU Guang-li MIAO Li-ning CHEN Nan SU Zhen MEI Chang-lin ZHAO Jiu-yang GU Yong BAI Yun-kai LUO Hui-min LIN Shan CHEN Meng-hua GONG Li YANG Yi-bin YANG Xiao-ping LI Ying WAN Jian-xin WANG Nian-song LI Hai-ying XI Chun-sheng HAO Li XU Yan FANG Jing-ai LIU Bi-cheng LI Rong-shan WANG Rong ZHANG Jing-hong WANG Jian-qin LOU Tan-qi SHAO Feng-min MEI Feng LIU Zhi-hong YUAN Wei-jie SUN Shi-ren ZHANG Ling ZHOU Chun-hua CHEN Qin-kai JIA Shun-lian GONG Zhi-feng GUAN Guang-ju XIA Tian ZHONG Liang-bao 2013Chinese Medical Journal2013,,12:16
9Dynamics Analysis of the Baiyun Sag in the Pearl River Mouth Basin,North of the South China Sea显示文摘摘要:Baiyun 下垂是在珍珠河嘴盆的斜坡上发展的深的。它水平地作为合成 graben 发生,并且由二亚 sags 对亚 sags 构成低高举。垂直地,沉积建筑学能被划分成三层,即底部,在中间的差错可锻的拉长层和顶上的 draping 层上的指责的层。sag 的主要 rifting 阶段应当被可锻的扩展描绘并且外壳变瘦。特殊变丑模式可能被归因于事实 Baiyun 下垂位于弱地区,使 sag 成为了一个强烈使变形的区域,由极大地变瘦的岩石圈和活跃 magmatism 描绘了的先存在的转移地区。在 Baiyun 下面的高度升起的披风下垂应该是为可锻的变丑负责的重要机制,它引起了上面的披风的部分融化。Upwelling 到上面的外壳和沉积的层,部分融化材料提供了 extensional 紧张并且引起了非指责的垂直沉淀。岩浆在 rifting 的第一个阶段以后在转移地区下面被收集,并且沿着趋势 NW 基础差错在对对 sag 和 upwelled 的 ENE 和 WSW 部分的扩展垂直的一个方向旁边地转了,在的地方趋势 WNW 砍差错在群发展了。指责的活动和 Baiyun 的沉积历史下垂可能被海洋山脉影响了在 24 妈和海地板在 16 妈附近传播的停止附近跳。SUN Zhen ZHONG Zhihong ZHOU Di PANG Xiong HUANG Chunju CHEN Changmin HE Min XU Hehua 2008Acta Geologica Sinica(English Edition)2008,82,1:13
10Molecular Typing of Brucella Suis Collected from 1960s to 2010s in China by MLVA and PFGE显示文摘Brucellosis is a bacterial anthropozoonosis usually caused by Brucella abortus, Brucella melitensis, Brucella suis and Brucella canis. Brucella suis, the causative agent of swine brucellosis, is classified into five biovars and preferentially infects different animal hosts [1] .LI Zhen Jun CUI Bu Yun CHEN Hai CHEN Jing Diao ZHAO Hong Yan PIAO Dong Ri JIANG Hai ZHANG Li TANG Xu KE Chang Wen YAO zhen TIAN Guo Zhong 2013Biomedical and Environmental Sciences2013,26,6:13
11High-precision Dating and Geological Significance of Chang 7 Tuff Zircon of the Triassic Yanchang Formation, Ordos Basin in Central China显示文摘The Ordos Basin, as the second largest petroliferous basin of China, contains abundant oil and gas resources, oil shale, and sandstone-type uranium mineral resources. Chang 7 shale is not only the major source rock of the Mesozoic petroliferous system of the Basin, but is also crucial in determining the space-time distribution relationship of the shale section for the effective exploration and development of the Basin's oil and gas resources. To obtain a highly precise age of the shale development section, we collected tuff samples from the top and bottom profile of the Chang 7 Member, Yishi Village, Yaoqu Town, Tongchuan District, on the southern margin of the Ordos Basin and performed high-precision chemical abrasion(CA)–isotope dilution(ID)–thermal ionization mass spectrometry(TIMS) zircon U-Pb dating on the basis of extensive laser ablation inductively coupled plasma mass spectrometry(LA-ICP-MS) zircon U-Pb dating data. Our results show the precise ages of the top and bottom zircon in the Chang 7 shale to be 241.06±0.12 Ma and 241.558±0.093 Ma, respectively. We first obtained Chang 7 age data with Grade 0.1-Ma precision and then determined the age of the shale development in the Chang 7 Member to be the early-Middle Triassic Ladinian. This result is supported by paleontological evidence. The deposition duration of the Chang 7 shale is 0.5 Ma with an average deposition rate of the shale section being 5.3 cm/ka. Our research results provide time scale and basic data for further investigation of the basin–mountain coupling relation of the shale section, the sedimentary environment and volcanic ash and organic-matter-rich shale development relation, and the organism break-out and organic-matter enrichment mechanism.ZHU Rukai CUI Jingwei DENG Shenghui LUO Zhong LU Yuanzheng QIU Zhen 2019Acta Geologica Sinica(English Edition)2019,93,6:13
12Piglets cloned from induced pluripotent stem cells显示文摘Nana Fan Jijun Chen Zhouchun Shang Hongwei Dou Guangzhen Ji Qingjian Zou Lu Wu Lixiazi He Fang Wang Kai Liu Na Liu Jianyong Han Qi Zhou Dengke Pan Dongshan Yang Bentian Zhao Zhen Ouyang Zhaoming Liu Yu Zhao Lin Lin Chongming Zhong Quanlei Wang Shouqi Wang Ying Xu Jing Luan Yu Liang Zhenzhen Yang Jing Li Chunxia Lu Gabor Vajta Ziyi Li Hongsheng Ouyang Huayan Wang Yong Wang Yang Yang Zhonghua Liu Hong Wei Zhidong Luan Miguel A Esteban Hongkui Deng Huanming Yang Duanqing Pei Ning Li Gang Pei Lin Liu Yutao Du Lei Xiao Liangxue Lai 2013Cell Research2013,23,1:12
13Construction of HBV-specific ribozyme and its recombinant with HDV and their cleavage activity in vitro显示文摘AIM To construct the recombinant of HDVcDNA and HBV-specific ribozyme gene byrecombinant PCR in order to use HDV as atransporting vector carrying HBV-specificribozyme into liver cells for inhibiting thereplication of HBV.METHODS We separately cloned the ribozyme(RZ)gene and recombinant DVRZ(comprisingHDV cDNA and HBV-specific ribozyme gene)intothe downstream of T7 promoter of pTAdv-Tvector and studied the in vitro cleavage activityof their transcripts(rRZ,rDVRZ)on target RNA(rBVCF)from in vitro transcription of HBV Cgene fragment(BVCF).RESULTS Both the simple(rRZ)and therecombinant ribozyme rDVRZ could efficientlycatalyze the cleavage of target RNA(rBVCF)under different temperatures(37℃,42℃ and55℃)and Mg2+concentrations(10 mmol/L,15 mmol/L and 20 mmol/L)and their catalyticactivity tended to increase as the temperaturewas rising.But the activity of rRZ was evidentlyhigher than that of rDVRZ.CONCLUSION The recombinant of HDV cDNAand ribozyme gene had the potential of beingfurther explored and used in gene therapy of HBVinfection.Shu Juan Wen Kai Jun Xiang Zhen Hua Huang Rong Zhou Xue Zhong Qi 2000World Journal of Gastroenterology2000,6,3:10
14骨骼肌卫星细胞梗死心肌移植的细胞因子分泌及血管再生作用显示文摘目的 研究骨骼肌卫星细胞梗死心肌移植的胰岛素样生长因子 (IGF) 1、碱性纤维母细胞生长因子 (bFGF)分泌及血管再生的作用。方法 骨骼肌卫星细胞经结扎的冠状动脉左前降支远端灌注移植入梗死区 ,2、4、8周后取标本 ,应用免疫组化学方法检测细胞因子表达及梗死区血管密度。结果 骨骼肌卫星细胞移植 2、4、8周后梗死区IGF 1和bFGF表达分别为 81.68± 3 .3 4、96.87± 7.78、90 .43± 7.3 6及 81.87± 3 .5 8、65 .66± 4.5 7、74.2 0± 6.41,明显高于对照组 (P <0 .0 1) ;同时 ,移植 2、4、8周后梗死区血管密度高于对照组 (P <0 .0 5 )。结论 骨骼肌卫星细胞梗死心肌移植除有心肌再生外 。钟竑 朱洪生 张臻 ZHONG Hong Zhu Hongsheng ZHANG Zhen 2001中华实验外科杂志2001,18,2:9
15Optimization of the Assembly Efficiency for Lidamycin Chromophore Bound to its Apoprotein:A Case Study using Orthogonal Array显示文摘Objective Lidamycin (LDM) can be dissociated to an apoprotein (LDP) and an active enediyne chromophore (AE).The detached AE can reassemble with its LDP‐containing fusion protein to endow the latter with potent antitumor activity.However,the reassembly of AE with LDP is affected by several factors.Our aim was to optimize the assembly efficiency of the AE with a LDP‐containing fusion protein and investigate the influence of several factors on the assembly efficacy.Methods A method based on RP‐HPLC was developed to analyze the assembly rate,and an orthogonal experimental design L9 (3 4 ) was used to investigate the effects of temperature,assembly time,pH and molecular ratio of LDP‐containing fusion protein to AE on the assembly rate.Furthermore,the determined optimum conditions for the assembly rate of the LDP‐containing fusion protein with AE were applied and evaluated.Results A calibration curve based on the LDM micromolar concentration against the peak‐area of AE by HPLC was obtained.The order in which individual factors in the orthogonal experiment affected the assembly rate were temperature>time>pH>molar ratio of AE to protein and all were statistically significant (P<0.01).The optimal assembly conditions were temperature at 10°C,time of 12 h,pH 7.0,and the molar ratio of AE: protein of 5:1.The assembly rate of AE with a LDP‐containing fusion protein was improved by 23% after condition optimization.Conclusion The assembly rate of chromophore of lidamycin with its LDP‐containing fusion protein was improved after condition optimization by orthogonal design,and the optimal conditions described herein should prove useful for the development of this type of LDP‐containing fusion protein.ZHONG Gen Shen GUO Xiao Fang ZHANG Sheng Hua ZHEN Yong Su 2011Biomedical and Environmental Sciences2011,24,6:9
16Flexible self-charging power units for portable electronics based on folded carbon paper显示文摘对便携式的电子学的迫切要求支持了高效率、持续、甚至可拉长的自我控告的力量来源的发展。在这个工作,我们建议为从人的运动和力量便携式计算机电子学收获机械精力基于合拢的碳(FC ) 统一纸的灵活自我控告的力量。现在的单位主要由摩擦电 nanogenerator (FC-TENG ) 和 supercapacitor (FC-SC ) 组成,基于合拢的复写纸精力 harvester 和存储设备分别地。这个有利几何图案向高幼仔模量复写纸提供优秀 stretchability 并且使力量单位能甚至在严重变丑下面工作,扭动,并且滚动,例如弯曲。另外,张力的紧张能被调节合拢三角的复写纸的合拢的角度最大化。而且,包装设备的防水性质使它可洗,保护它免受人的汗的伤害,并且使它能在严厉环境工作。最后,同样准备的自我控告的力量单位被把它放在人的身体上从手拍,踩的脚,并且手臂接触成功地驱动一块电子手表收获机械精力测试。这个工作表明可拉长的自我控告的力量单位的出色的潜力,它将进一步为便携 / 便携式的电子学支持高幼仔模量材料的发展。Changjie Zhou Yanqin Yang Na Sun Zhen Wen Ping Cheng Xinkai Xie Huiyun Shao Qingqing Shen Xiaoping Chen Yina Liu Zhong Lin Wang Xuhui Sun 2018Nano Research2018,11,8:9
17Research progress on the breeding of japonica super rice varieties in Jiangsu Province,China显示文摘In this study we report the results of a decade-long breeding program for japonica super rice made by Nanjing Branch of Chinese National Center for Rice Improvement in Jiangsu Academy of Agricultural Sciences. We concluded that selection of parents with good comprehensive traits and complementary advantages and disadvantages of both parents in the hybrid combination, and early selection of high heritability traits in earlier segregating generations could significantly improve the breeding efficiency. The use of closely-linked functional markers in pyramiding of multiple genes could greatly increase breeding efficiency, avoiding time-consuming and laborious steps that were used in traditional breeding program. It is also important to coordinate the yield components with variety characteristics such as yield stability, wide adaptability, lodging resistance, and an attractive grain appearance during late growth stage of rice.WANG Cai-lin ZHANG Ya-dong ZHU Zhen CHEN Tao ZHAO Qing-yong ZHONG Wei-gong YANG Jie YAO Shu ZHOU Li-hui ZHAO Ling LI Yu-sheng 2017Journal of Integrative Agriculture2017,16,5:9
183D C_f/SiBCN composites prepared by an improved polymer infiltration and pyrolysis显示文摘Using liquid poly(methylvinyl)borosilazanes(PMVBSZ)as precursor,carbon fiber reinforced SiBCN matrix composites(C_f/SiBCN)were fabricated by a modified polymer infiltration and pyrolysis(PIP)process.With dicumyl peroxide added as cross-linking agent,the PMVBSZ could be solidified at a low temperature of 120℃,leading to a high ceramic yield of~70%.The cross-linking mechanism and ceramization processes of the precursor were investigated in detail.Moreover,a modified infiltration technology was developed,which improved the efficiency and protected the precursor against moist air during PIP.Consequently,the obtained C_f/SiBCN composites had an oxygen content of around 1.22 wt%.Benefiting from the high ceramic yield and high efficiency of the modified PIP,C_f/SiBCN composites with an open porosity of~10%and uniform microstructure were obtained after only 7 cycles of PIP.The flexural strength and fracture toughness of the derived C_f/SiBCN composites were 371 MPa and 12.9 MPa·m^(1/2),respectively.This work provides a potential route for the fabrication of high performance C_f/SiBCN composites.Qi DING Dewei NI Zhen WANG Hao ZHONG Hongda WANG Haijun ZHOU Yanmei KAN Shaoming DONG 2018Journal of Advanced Ceramics2018,7,3:9
19Ginsenoside Rg1 Attenuates Isoflurane-induced Caspase-3 Activation via Inhibiting Mitochondrial Dysfunction显示文摘Objective The inhalation anesthetic isoflurane has been shown to induce mitochondrial dysfunction and caspase activation, which may lead to learning and memory impairment. Ginsenoside Rg1 is reported to be neuroprotective. We therefore set out to determine whether ginsenoside Rg1 can attenuate isoflurane-induced caspase activation via inhibiting mitochondrial dysfunction. Methods We investigated the effects of ginsenoside Rg1 at concentrations of 12.5, 25, and 50 μmol/L and pretreatment times of 12 h and 24 h on isoflurane-induced caspase-3 activation in H4 na?ve and stably transfected H4 human neuroglioma cells that express full-length human amyloid precursor protein(APP)(H4-APP cells). For mitochondrial dysfunction, we assessed mitochondrial permeability transition pore(m PTP) and adenosine-5'-triphosphate(ATP) levels. We employed Western blot analysis, chemiluminescence, and flowcytometry. Results Here we show that pretreatment with 50 μmol/L ginsenoside Rg1 for 12 h attenuated isoflurane-induced caspase-3 activation and mitochondrial dysfunction in H4-APP cells, while pretreatment with 25 and 50 μmol/L ginsenoside Rg1 for 24 h attenuated isoflurane-induced caspase-3 activation and mitochondrial dysfunction in both H4 na?ve and H4-APP cells. Conclusion These data suggest that ginsenoside Rg1 may ameliorate isoflurane-induced caspase-3 activation by inhibiting mitochondrial dysfunction. Pending further studies, these findings might recommend the use of ginsenoside Rg1 in preventing and treating isoflurane-induced neurotoxicity.MIAO Hui Hui ZHEN Yu DING Guan Nan HONG Fang Xiao XIE Zhong Cong TIAN Ming 2015Biomedical and Environmental Sciences2015,28,2:9
20Effect of Tangweian Jianji on upper gastrointestinal remodeling in streptozotocin-induced diabetic rats显示文摘AIM:To investigate the effect of Tangweian Jianji(TWAJJ) on the biomechanical and morphometrical remodeling of the upper gastrointestinal tract in diabetic rats.METHODS:Diabetes was induced in 27 rats by injecting streptozotocin(40 mg/kg body weight),the animals were then divided into three groups(n = 9 in each group),i.e.,diabetic control(DM);high dose(10 g/kg,T1) and low dose(5 g/kg,T2).Another 10 rats acted as normal controls(Control).TWAJJ was administered by gavage once daily.Blood glucose and serum insulin levels were measured.Circumferential length,wall thickness and opening angle were measured from esophageal,duodenal,jejunal and ileal ring segments.The residual strain was calculated from the morphometric data.Step-wise distension was carried out on esophageal and jejunal segments.The obtained data on the length,diameter and pressure changes were then used to calculate the circumferential and longitudinal stresses and strains.Real-time reverse transcription polymerase chain reaction was used to detect the receptor of advanced glycation end-products(RAGE) mRNA level in jejunal tissues.RESULTS:At the end of the experiment,the blood glucose level was significantly higher and the serum insulin level was significantly lower in DM,T1 and T2 groups than in the control group(Glucose:30.23 ± 0.41 mmol/L,27.48 ± 0.27 mmol/L and 27.84 ± 0.29 mmol/L vs 5.05 ± 0.04 mmol/L,P = 1.65 × 10-16,P = 5.89 × 10-19 and P = 1.63 × 10-18,respectively;Insulin:1.47 ± 0.32 g/L,2.66 ± 0.44 g/L,2.03 ± 0.29 g/L and 4.17 ± 0.54 g/L,P = 0.0001,P = 0.029 and P = 0.025,respectively).However,these levels did not differ among the DM,T1 and T2 groups.The wet weight per unit length,wall thickness and opening angle of esophageal and intestinal segments in the DM group were significantly higher than those in the control group(from P = 0.009 to P = 0.004).These parameters in the T1 group were significantly lower than those in the DM group(wet weight,duodenum:0.147 ± 0.003 g/cm vs 0.158 ± 0.001 g/cm,P = 0.047;jejunum,0.127 ± 0.003 g/cm vs 0.151 ± 0.002 g/cm,P = 0.017;ileum,0.127 ± 0.004 g/cm vs 0.139 ± 0.003 g/cm,P = 0.046;wall thickness,esophagus:0.84 ± 0.03 mm vs 0.94 ± 0.02 mm,P = 0.014;duodenum:1.27 ± 0.06 mm vs 1.39 ± 0.05 mm,P = 0.031;jejunum:1.19 ± 0.07mm vs 1.34 ± 0.04 mm,P = 0.047;ileum:1.09 ± 0.04 mm vs 1.15 ± 0.03 mm,P = 0.049;opening angle,esophagus:112.2 ± 13.2 vs 134.7 ± 14.7,P = 0.027;duodenum:105.9 ± 12.3 vs 123.1 ± 13.1,P = 0.046;jejunum:90.1 ± 15.4 vs 115.5 ± 13.3,P = 0.044;ileum:112.9 ± 13.4 vs 136.1 ± 17.1,P = 0.035).In the esophageal and jejunal segments,the inner residual stain was significantly smaller and the outer residual strain was larger in the DM group than in the control group(P = 0.022 and P = 0.035).T1 treatment significantly restored this biomechanical alteration(P = 0.011 and P = 0.019),but T2 treatment did not.Furthermore,the circumferential and longitudinal stiffness of the esophageal and jejunal wall increased in the DM group compared with those in the control group.T1,but not T2 treatment,significantly decreased the circumferential wall stiffness in the jejunal segment(P = 0.012) and longitudinal wall stiffness in the esophageal segment(P = 0.023).The mRNA level of RAGE was significantly decreased in the T1 group compared to that in the DM group(P = 0.0069).CONCLUSION:TWAJJ(high dose) treatment partly restored the morphometric and biomechanical remodeling of the upper gastrointestinal tract in diabetic rats.Gui-Fang Liu Jing-Bo Zhao Zhong Zhen Hong Sha Peng-Min Chen Min Li Jia-Cheng Zhang Ming-Ze Yuan Wen Gao Hans Gregersen Xiao-Lin Tong 2012World Journal of Gastroenterology2012,18,35:8
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