检索结果-南通市图书馆

Development of a Liquid Chip Technique to Simultaneously Detect Taura Syndrome Virus( TSV) and Yellow Head Disease Virus( YHDV)

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Animal Husbandry and Feed Science 2014年第5期6卷 256-260页

作者： Yin Weili Zhang Sihua Yue Zhiqin Zheng Xiaolong Liu Hong Yantai entry-exit inspection and quarantine bureau Wuhan Center for Severe Animal Disease Control and Prevention Shandong entry-exit inspection and quarantine bureau Shenzhen entry-exit inspection and quarantine bureau

The aim is to develop a liquid chip technique to detect Taura syndrome virus( TSV) and yellow head disease virus( YHDV) on Penaeus orientalis simultaneously. The CP2 gene of TSV and N gene of YHDV in Gen Bank was analysed by using the software DNAStar 7. 0 to design the TSV-and YHDV-specific primers. The primers were labeled with biotin and subjected to amination modification. They were then coupled with fluorescence-coded microspheres and then used for hybridization with RT- PCR products of TSV and YHDV. The liquid chip detection technique for detection of TSV and YHDV was established by using BD FACSArray to detect fluorescence signal in the reaction system. This assay system had a high sensitivity to TSV and YHDV,with the detection of limit of 100 pg. Moreover,the assay was specific for the detection of TSV,YHDV and was not susceptible to cross with other viruses,including white spot syndrome virus( WSSV),spring viremia of carp virus( SVCV),infectious haematopoietic necrosis virus( IHNV). In conclusion,the liquid chip assay technique established in this study is highly sensitive and specific to TSV and YHDV detection. Moreover,it provides a novel,convenient and rapid approach for the detection of TSV and YHDV.

关键词： Penaeus orientalis Taura syndrome virus(TSV) Yellow head disease virus(YHDV) Liquid chip Detection

Sympathetic transmitters control thermogenic efficacy of brown adipocytes by modulating mitochondrial complex V

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Signal Transduction and Targeted Therapy 2017年第1期2卷 43-50页

作者： Tao-Rong Xie Chun-Feng Liu Jian-Sheng Kang CAS Key Laboratory of Nutrition and Metabolism Institute for Nutritional SciencesShanghai Institutes for Biological SciencesChinese Academy of SciencesShanghaiChina Technical Center for Animal Plant and Food Inspection and QuarantineShanghai Entry-Exit Inspection and Quarantine BureauShanghaiChina.

Obesity is a worldwide epidemic and results from excessive energy intake or inefficient energy *** is promising to utilize the thermogenic function of brown adipose tissue for obesity ***,the mechanisms controlling the efficacy of norepinephrine-induced thermogenesis in brown adipocytes remain *** we demonstrate that norepinephrine(NE)induces low-efficacy thermogenesis,evoking both heterogeneous changes(ΔΨm andΔpH)and homogenous responses,one of which is that NE stimulation causes large amounts of ATP consumption in brown *** reveal that the proton-ATPase activity of mitochondrial complex V is a key factor that antagonizes proton leakage by UCP1 and determines the efficacy of NE-induced thermogenesis in brown ***,to avoid unnecessary and undesired heat production,we reveal that ATP is a necessary sympathetic cotransmitter for the high efficacy and specificity of NE-induced thermogenesis in brown adipocytes as it increases intracellular calcium concentrations and upregulates the ATP synthase activity of complex ***,we demonstrate the modulation mechanism of thermogenic efficacy in brown *** findings imply new strategies to partially or fully utilize the thermogenic capacity of brown adipocytes to identify therapeutic targets for the treatment of obesity and diabetes.

关键词： utilize brown specificity

Follicle-stimulating hormone promotes proliferation of cultured chicken ovarian germ cells through protein kinases A and C activation

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2010年第12期11卷 952-957页

作者： Hong-yun LIU Wei-dong ZENG Ai-ling CAO Cai-qiao ZHANG Key Laboratory of Animal Epidemic Etiology and lmmunological Prevention of the Ministry of Agriculture College of Animal Sciences Zhejiang University Hangzhou 310029 China Xiaoshan entry-exit inspection and quarantine bureau Hangzhou 311208 China

The study was conducted to investigate the effects of follicle-stimulating hormone (FSH) on embryonic chicken ovarian germ cell proliferation and its possible involvements of protein kinases A (PKA) and C (PKC) *** cells were treated with FSH alone or in the presence of forskolin (FRSK),PKA inhibitor (H89),PKC activator (PMA) or inhibitor (H7).The germ cell number was counted from *** immunocytochemistry of proliferating cell nuclear antigen (PCNA) was applied to identify the proliferating *** germ cell labeling index (LI) was determined for cell *** FSH treatment increased the germ cell number,and this stimulating effect was enhanced by FRSK or PMA,but inhibited by H89 or H7 in a dose-dependent ***,the PCNA-LI showed parallel changes with germ cell *** study suggests that FSH may stimulate proliferation of cultured chicken ovarian germ cells by activation of both the PKA and PKC signaling pathways.

关键词： Follicle-stimulating hormone Protein kinase A Protein kinase C Germ cell Proliferation

Nutrient compositions of cultured Skeletonema costatum,Chaetoceros curvisetus,and Thalassiosira nordenskildii

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Oceanology and Limnology 2010年第6期28卷 1131-1138页

作者：潘胜军沈志良刘文萍韩笑天苗辉马海青 Key Laboratory of Marine Ecology and Environmental Sciences Institute of OceanologyChinese Academy of Sciences Graduate University of Chinese Academy of Sciences Rizhao entry-exit inspection and quarantine bureau of P.R.China

We cultured different-sized fractions of dominant phytoplankton species, Skeletonema costatum, Chaetoceros curvisetus, and Thalassiosira nordenskioldii, collected in different sea areas in various seasons, and measured and compared their C, N, P, Si contents. The N content of these species is similar, while the C, P, and Si contents of S. costatum from eutrophic Changjiang （Yangtze River） estuary are higher than those from Jiaozhou Bay （JZB）, particularly the content of Si. The C, N, P, and Si contents of cultured phytoplankton in JZB increase with size fraction augmentation, and the percentages of C, N, and P follow the same trend, while the percentage of Si remain constant. Moreover, S. costatum from small-sized fraction assimilated Si more easily than C. curvisetus and T. nordenskirldii, which is explained by the dominance of S. costatum under the conditions of low SiO3-Si concentration in JZB. The C, N, P, and Si contents of cultured S. costatum collected during summer and winter are higher, which is consistent with the phytoplankton blooming seasons in JZB. The SiO3-Si concentration of seawater during spring restrain the growth of phytoplankton, supported by the fact that the N, P, and Si contents and their ratios in cells of cultured S. costatum are low in spring season.

关键词： nutrient compositions Skeletonema costatum Chaetoceros curvisetus Thalassiosira nordenskiOldii

Evaluation of Uncertainty for Detecting the Content of Banned Aromatic Amines in Textile Products by GC-MS

在线全文

学校读者我要写书评

暂无评论

Journal of Donghua University(English Edition) 2006年第3期23卷 14-18页

作者：傅科杰李峥嵘杨力生闵洁叶洪淼 Ningbo entry-exit inspection and quarantine bureau of P. R. C. Ningbo 315192 College of Chemistry and Chemical Engineering Donghua University Shanghai 201620

The article evaluated the uncertainty of the content of banned aromatic amines in textile products in terms of GB/ T17592. 1 - 1998 Textiles-test Method of Banned Azo Coloumnts-gas Chromatography/Mass Spectrometric Method, analyzed and quantified the uncertainty components which affected the measurement results. Through calculation, the uncertainty of the sample mainly came from Co standard uncertainty, weighing, uncertainty of volmne, effect on the recovery rate of sample during the course of extraction and purification and ucertainty from the random effect during the course of measurement. It was obtained that the expanded uncertainties of the content of 2 - naphthylamine, benzidine and 2, 4 - diaminotoluenc with higher frequency in 24 kinds of forbidden aromatic amines were respectively 2. 128, 2.302 and 4.778 mg/kg.

关键词： uncertainty GC-MS 2 - naphthylamine benzidine 2 4- diaminotoluene.

Speciation Analysis of Arsenic Compounds in Seafood by Ion Chromatography-Atomic Fluorescence Spectrometry

在线全文

学校读者我要写书评

暂无评论

Journal of Ocean University of China 2017年第3期16卷 455-460页

作者： HAN Tingting JI Hongwei LI Huixin CUI He Song Tian DUAN Xiaojuan ZHU Qianlin CAI Feng ZHANG Li College of Chemistry and Chemical Engineering Ocean University of China Qingdao 266100 P. R. China Shandong entry-exit inspection and quarantine Technology Center Qingdao 266002 P. R. China Qingdao entry-exit inspection and quarantine bureau Qingdao 266001 P. R. China School of Science Yanshan University Qinhuangdao 066004 P. R. China

Ion chromatography-ultra violet-hydride generation-Atomic Florescence Spectrometry was applied to detect 5 arsenic species in seafoods. The arsenic species studied include arsenobetaine(As B), arsenite(As(III)), dimethylarsinic acid(DMA), monomethylarsonic acid(MMA), and arsenate(As(V)), which were extracted from samples using 2% formic acid. Gradient elution using 33 mmol L^(-1) CH_3COONH_4 and 15 mmol L^(-1) Na_2CO_3 with 10 mL CH_3CH_2OH at pH 8.4 allowed the chromatographic separation of all the species on a Hamilton PRP-X100 anion-exchange column in less than 8 min. In this study, an ultrasound extraction method was used to extract arsenic species from seafood. The extraction efficiency was good and the recoveries from spiked samples were in the range of 72.6%–109%; the precision between sample replicates was higher than 3.6% for all determinations. The detection limits were 3.543 μg L^(-1) for As B, 0.4261 μg L^(-1) for As(III), 0.216 μg L^(-1) for DMA, 0.211 μg L^(-1) for MMA, and 0.709 μg L^(-1) for As(V), and the linear coefficients were greater than 0.999. We also developed an application of this method for the determination of arsenic species in bonito, Euphausia superba, and Enteromorpha with satisfactory results. Therefore, it was confirmed that this method was appropriate for the detection of arsenic species in seafood.

关键词： arsenic species seafood ion chromatography atomic fluorescence spectrometry

Two new species of the genus Boysidia from China, with a preliminary discussion of its geography (Pulmonata: Stylommatophora: Pupillidae)

在线全文

学校读者我要写书评

暂无评论

Zoological Systematics 2014年第4期39卷 570-575页

作者： Wei-Hong Zhang De-Niu Chen Wei-Chuan Zhou College of Life Sciences and Technology Xinjiang University Institute of Zoology Chinese Academy of Sciences Key Laboratory of Molluscan quarantine and Identification of AQSIQ Fujian Entry-Exit Inspection & Quarantine Bureau

Two species of the genus Boysidia Ancey, 1881 were reported as new to science, Boysidia（Boysidia） xianfengensis sp. nov. and B.（B.） xiaoguanensis sp. nov., while the distribution of the 23 species of Boysidia from China was discussed. The materials of the new species were collected from hubei Province, China by authors. The shell of B.（B.） xianfengensis sp. nov. looks small（height 4.90 mm, diameter 3.10 mm）, and has five apertural teeth： one large parietal tooth, one long columellar tooth, one small nipple-shaped upper palatal tooth, one large flake-shaped lower palatal tooth, one small infrapalatal tooth. The shell of B.（B.） xiaoguanensis sp. nov. looks small（height 3.55 mm, diameter 2.20 mm）, and has four apertural teeth： one large parietal tooth, one long columellar tooth, one large flake-shaped upper palatal tooth, one slightly small flake-shaped lower palatal tooth. The type specimens of the new species are deposited in the Institute of Zoology, Chinese Academy of Sciences, China.

关键词： Land snail Boysidia taxonomy new species

Effects of Herba Epimedii and Fructus Ligustri lucidi on the Transcription Factors in Hypothalamus of Aged Rats

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Integrative Medicine 2011年第10期17卷 758-763页

作者：蔡晶郑腾张磊田允杨民和杜建 Fujian Institute of Integrative Chinese and Western Medicine Fujian University of Traditional Chinese Medicine Fujian entry-exit inspection and quarantine bureau of P.R.China Fujian Normal University

Objective： To comparatively analyze the difference in the expression of 54 transcription factors in the hypothalamus using protein chips following the medication of Chinese drugs for Shen （肾）-tonification, Herba Epimedii, and Fructus Ligustri lucidi （FL） to aged rats. Methods： Wistar rats, aged 15 months of SPF grade, were randomized into three groups, three males and three females in each group. They were medicated with Herba Epimedii decoction （HED, 0.14 g/kg）, Fructus Ligustri lucidi decoction （FLD, 0.12 g/kg）, and distilled water, respectively, twice a day for 15 days. The rats were sacrificed at the morning of the 16th day 1 h after medication, and their hypothalamus was taken and made into homogenate under an ice-bath for detecting the expression of transcription factors with chip technique. Results： The expressions of signal transduction and transcription activation factor-6 （Stat-6） and androgen receptor （AR） were up-regulated, and those of pre-B transcription factor1 （Pbx-1）, stat-1 and AP-2 were down-regulated in both HED and FLD treated groups, but these changes occurred mainly in female rats in the former while mainly in males in the latter. Conclusions： Chinese drugs for Shen-tonification could impact the expression of transcription factors in the hypothalamus of aged rats, dominantly on the neuro-endocrine factors responsible for the growth and development. The effects of drugs for tonifying Shen-yang and for tonifying Shen-yin are different, which is probably one of the pharmacological mechanisms of the Shen-tonifying drugs.

关键词： Herba Epimedii Fructus Ligustri lucidi transcription factor aged rat hypothalamus

Rapid Detection of Fox-derived Components using Mitochondrial COI Gene Sequence

在线全文

学校读者我要写书评

暂无评论

Animal Husbandry and Feed Science 2014年第6期6卷 345-347,352页

作者： Sun Min Gao Hongwei Gong Fang Liu Caixia Shandong entry-exit inspection and quarantine bureau

Fox is an important economic fur animal with a very promising prospect. The fox mitochondrial COl gene-specific primers and probes were used to opti- mize and develop a real time fluorescence PCR system for rapid detection of fox-derived components. The results showed that the real time fluorescence PCR gave a very high sensitivity, with the detection limit as low as 12 fg DNA, and it did not present any cross reaction with other common species like pig, cow, sheep, dog, soybean and maize. It could be concluded that this method can be used as an effective method for detecting the fox-derived components in food and feedstuff, and can also be applied for distinguishing the fox fur from adulterants.

关键词： Fox COI gene Real time fluorescence PCR