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31.
郭卫红 《世界中西医结合杂志》2014,(5):496-497
目的测定同属肉苁蓉、管花肉苁蓉、盐生肉苁蓉及其不同产地药材中麦角甾苷含量。方法采取麦角甾苷稀甲醇溶液予200~400 nm波长扫描,以332 nm为检测波长。精密吸取对照品溶液1、2、4、6、8μL进样,按拟定的色谱条件测定。分别以乙酸乙酯、氯仿、石油醚、乙醚脱脂,然后以甲醇提取,测定含量。精密称取已测知含量的样品适量,添加适量麦角甾苷对照品并测定。结果麦角甾苷在0.1~0.8μg范围内与峰面积呈良好的线性关系。不同地区肉苁蓉麦角甾苷含量差异巨大。结论中药产地因素不可忽略,检测样品越多,含量变异程度越大。 相似文献
32.
《European journal of cancer (Oxford, England : 1990)》2014,50(16):2745-2746
European cancer research for a transformative initiative by creating a consortium of six leading excellent comprehensive cancer centres that will work together to address the cancer care-cancer research continuum.Prerequisites for joint translational and clinical research programs are very demanding. These require the creation of a virtual single ‘e-hospital’ and a powerful translational platform, inter-compatible clinical molecular profiling laboratories with a robust underlying computational biology pipeline, standardised functional and molecular imaging, commonly agreed Standard Operating Procedures (SOPs) for liquid and tissue biopsy procurement, storage and processing, for molecular diagnostics, ‘omics’, functional genetics, immune-monitoring and other assessments. Importantly also it requires a culture of data collection and data storage that provides complete longitudinal data sets to allow for: effective data sharing and common database building, and to achieve a level of completeness of data that is required for conducting outcome research, taking into account our current understanding of cancers as communities of evolving clones. Cutting edge basic research and technology development serve as an important driving force for innovative translational and clinical studies. Given the excellent track records of the six participants in these areas, Cancer Core Europe will be able to support the full spectrum of research required to address the cancer research- cancer care continuum. Cancer Core Europe also constitutes a unique environment to train the next generation of talents in innovative translational and clinical oncology. 相似文献
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《Journal of neonatal nursing : JNN》2014,20(5):207-213
Pain management in premature and sick babies has long been recognised as a vital component of neonatal care; however practices pertaining to pain assessment and administration of analgesia remain variable in Neonatal Units (NNU). Sucrose has been identified as an effective agent in reducing pain during minor painful procedures in premature babies but the uptake has been modest.This article (part 2) follows on from an earlier article on evidence to support the implementation of sucrose administration as a measure for pain relief for minor procedures (part 1) and will centre on practice-based change in the NNU and reflect on the strategies used as well as the effectiveness of the proposed change. A theoretical change model will be used as a framework to help unpack the influences inherent within the change process. 相似文献
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《Environmental toxicology and pharmacology》2015,40(3):1081-1090
We previously reported that Astragalus polysaccharide (APS) extracted from Chinese medicine Astragalus membranaceus (Fisch.) Bge, attenuates hypertrophy of neonatal rat ventricular myocytes (NRVMs) induced by isoproterenol (Iso). The present study was designed to investigate the effects and the possible mechanism of APS on Iso-induced hypertrophy in rats and NRVMs with focus on tumor necrosis factor α (TNF-α)/peroxisome proliferator-activated receptor-γ coactivator 1α (PGC-1α) signaling mediated energy biosynthesis. 36-Week old rats were randomly divided into 3 groups: (1) Control, rats received vehicle; (2) Iso, rats received isoproterenol injections; (3) Iso+APS, rats received isoproterenol injections and APS. NRVMs were divided into similar groups as rats. The results showed that combination of APS with Iso significantly attenuated the pathological changes, reduced the ratios of heart weight/body weight (HW/BW) and left ventricular weight/BW (LVW/BW), improved the cardiac hemodynamics, down-regulated mRNA and protein expression of atrial natriuretic peptide (ANP), increased the ratios of ATP/ADP and ATP/AMP, and decreased the content of free fatty acid (FFA) in heart tissue of rats compared with Iso alone. In addition, pretreatment with APS significantly decreased the surface area and protein content, down-regulated mRNA and protein expression of ANP, increased the ratios of ATP/ADP and ATP/AMP, and decreased the content of FFA in NRVMs compared with Iso alone. Furthermore, APS increased the protein expressions of ATP5D, the σ subunit of ATP synthase, PGC-1α and pyruvate dehydrogenase kinase 4 (PDK4) in tissue and NRVMs respectively and inhibited the production of TNF-α in serum and culture medium compared with Iso alone. The results suggested that APS attenuates Iso-induced cardiac hypertrophy through regulating TNF-α/PGC-1α signaling mediated energy biosynthesis. 相似文献
38.
Yan Gao Shi-feng Chu Jian-ping Li Zhao Zhang Jia-qing Yan Zhi-lin Wen Cong-yuan Xia Zheng Mou Zhen-zhen Wang Wen-bin He Xiao-feng Guo Gui-ning Wei Nai-hong Chen 《Acta pharmacologica Sinica》2015,36(3):311-322
Aim:
Protopanaxtriol (Ppt) is extracted from Panax ginseng Mayer. In the present study, we investigated whether Ppt could protect against 3-nitropropionic acid (3-NP)-induced oxidative stress in a rat model of Huntington''s disease (HD) and explored the mechanisms of action.Methods:
Male SD rats were treated with 3-NP (20 mg/kg on d 1, and 15 mg/kg on d 2–5, ip). The rats received Ppt (5, 10, and 20 mg/kg, po) daily prior to 3-NP administration. Nimodipine (12 mg/kg, po) or N-acetyl cysteine (NAC, 100 mg/kg, po) was used as positive control drugs. The body weight and behavior were monitored within 5 d. Then the animals were sacrificed, neuronal damage in striatum was estimated using Nissl staining. Hsp70 expression was detected with immunohistochemistry. Reactive oxygen species (ROS) generation was measured using dihydroethidium (DHE) staining. The levels of components in the Nrf2 pathway were measured with immunohistochemistry and Western blotting.Results:
3-NP resulted in a marked reduction in the body weight and locomotion activity accompanied by progressive striatal dysfunction. In striatum, 3-NP caused ROS generation mainly in neurons rather than in astrocytes and induced Hsp70 expression. Administration of Ppt significantly alleviated 3-NP-induced changes of body weight and behavior, decreased ROS production and restored antioxidant enzymes activities in striatum. Moreover, Ppt directly scavenged free radicals, increased Nrf2 entering nucleus, and the expression of its downstream products heme oxygenase-1 (HO-1) and NAD(P)H quinone oxidase 1 (NQO1) in striatum. Similar effects were obtained with the positive control drugs nimodipine or NAC.Conclusion:
Ppt exerts a protective action against 3-NP-induced oxidative stress in the rat model of HD, which is associated with its anti-oxidant activity. 相似文献39.
Su Jinmei Li Mengtao He Lan Zhao Dongbao Wan Weiguo Liu Yi Xu Jianhua Xu Jian Liu Huaxiang Jiang Lindi Wu Huaxiang Zuo Xiaoxia Huang Cibo Liu Xiumei Li Fen Zhang Zhiyi Liu Xiangyuan Dong Lingli Li Tianwang Chen Haiying Li Jingyang He Dongyi Lu Xin Huang Anbin Tao Yi Wang Yanyan Zhang Zhuoli Wei Wei Li Xiaofeng Zeng Xiaofeng 《Clinical rheumatology》2022,41(3):731-739
Clinical Rheumatology - The equivalence of the biosimilar HS016 to adalimumab (Humira) for the treatment of active ankylosing spondylitis (AS) patients has been previously validated. The aim was to... 相似文献
40.
目的 调查河南省县区级疾控人员的工作现状,探究职业满意度的影响因素,为健全基层疾控激励机制提供政策依据。方法 整群抽样调查河南省13个县区级疾控中心,收回有效问卷530份,对其进行频数分析和多元线性回归分析。结果 河南省县区级疾控中心工作人员的职业满意度均值为64.1921.57分,主要影响因素有薪酬分配制度、职业环境、收入状况、工作范围、性别。结论 河南省县区疾控人员职业满意度低,受工作、政策、环境等多维因素影响,应根据影响因素有针对性地优化管理政策。 相似文献