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Construction of DNA Vaccine for FMDV P1 Gene and Immunization Experiment
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作者 史秋梅 高桂生 +2 位作者 张艳英 高光平 张东林 《Agricultural Science & Technology》 CAS 2013年第8期1069-1071,共3页
[Objective] This study aimed to construct DNA vaccine of foot-and-mouth disease (FMD).[Method] Plasmid carriers plESZP1 and pUTK3CP1 with PRV were constructed for FMDV P1 gene expression.Mice were immunized,and thei... [Objective] This study aimed to construct DNA vaccine of foot-and-mouth disease (FMD).[Method] Plasmid carriers plESZP1 and pUTK3CP1 with PRV were constructed for FMDV P1 gene expression.Mice were immunized,and their antibody level was detected.The two eukaryotic expression plasmids constructed were transfected into Vero cells.PCR,IFA and Westem-blot were carried out to detect the transcription and expression of the objective gene.Balb/C mice were intramuscularly inoculated with the DNA plasmid which expressed the target gene correctly,and the antibody level in mice was detected by the means of ELISA and serum neutralization (SN).[Result] DNA plasmid carrying P1 gene which encodes FMDV capsid protein caused specific body fluid immunoreaction in mice,and the antibody level of anti-FMDV had no difference in the mice induced by the two recombinant plasmids.[Conclusion] This study lays a foundation for evaluating the genetically modified vaccine by immunizing animals with recombinant PRV containing the FMDV P1 gene and recombinant virus. 展开更多
关键词 FMDV P1 gene DNA plasmid Immunization experiment
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Experiments and Studies of Edge Plasma Radial Transport and Confinement Property on the HL-1M Tokamak 被引量:1
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作者 洪文玉 王恩耀 +1 位作者 潘宇东 李强 《Plasma Science and Technology》 SCIE EI CAS CSCD 2000年第4期347-356,共10页
This paper describes a Mach/Langmuir probe array with five pins and six pins, which can measure not only parallel flows and the flow perpendicular to the magnetic field but also the radial and the poloidal electric fi... This paper describes a Mach/Langmuir probe array with five pins and six pins, which can measure not only parallel flows and the flow perpendicular to the magnetic field but also the radial and the poloidal electric field E. arid E as well. Experimental measurements of the edge fluctuations, velocities of the toroidal, the poloidal flow and electric field have been carried out on both of SOL and the boundary region of HL-1M for Ohmic, biased H-mode, Lower Hybrid Current Drive (LHCD), Supersonic Molecular Beam Injection (MBI), Multi-shot Pellet Injection (MPI), Neutral Beam Injection (NBI), Ion Cyclotron Resonance Heating (ICRH) and Electric Cyclotron Resonance Heating (ECRH) discharges. The results show that the suppressions of the fluctuations are related to poloidal rotations produced by different discharge modes in the improved particle confinement property, simultaneously the change of the radial and poloidal electric field is generated and becomes more negative at the Tokamak plasma edge, and the sheared poloidal flow is related to the reduction in fluctuation level, and the poloidal velocity is mainly dominated by the E × B drift. 展开更多
关键词 LHCD experiments and Studies of Edge Plasma Radial Transport and Confinement Property on the HL-1M Tokamak ICRH ECRH HL
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以“维生素B_(1)质量分析”为例探索药物分析实验教学改革
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作者 李婷婷 廖丽云 +2 位作者 代晶 巫传玲 邓晶晶 《广东化工》 CAS 2024年第18期222-224,共3页
以药物分析综合性实验《维生素B_(1)原料药及片剂的质量研究》为例,将新教学模式应用于药物分析综合实验项目,参照药物质量控制研究岗位的工作特点把项目培养方案与该岗位的职业需求相对接,设置岗位情景、明确岗位目标、增加岗位实例。... 以药物分析综合性实验《维生素B_(1)原料药及片剂的质量研究》为例,将新教学模式应用于药物分析综合实验项目,参照药物质量控制研究岗位的工作特点把项目培养方案与该岗位的职业需求相对接,设置岗位情景、明确岗位目标、增加岗位实例。最终提高学生的岗位适应能力和职业技能。以此,培养具备专业基础扎实、严格控制药品质量、具有良好药学职业道德的综合型药学人才。 展开更多
关键词 维生素B_(1) 质量分析 药物分析实验 综合型药学人才
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陈皮提取物对APP/PS-1双转基因阿尔茨海默病小鼠学习记忆功能的影响
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作者 颜仁梁 李威 《福建医药杂志》 CAS 2024年第3期107-110,共4页
目的探讨陈皮提取物对APP/PS-1双转基因阿尔茨海默病(AD)小鼠学习记忆功能的影响.方法选用APP/PS-1双转基因AD小鼠16只,随机分为模型对照组和供试品组,8只/组,另取8只C57小鼠为正常对照组,正常对照组和模型对照组分别灌胃等量的生理盐水... 目的探讨陈皮提取物对APP/PS-1双转基因阿尔茨海默病(AD)小鼠学习记忆功能的影响.方法选用APP/PS-1双转基因AD小鼠16只,随机分为模型对照组和供试品组,8只/组,另取8只C57小鼠为正常对照组,正常对照组和模型对照组分别灌胃等量的生理盐水,供试品组灌胃陈皮提取物的生理盐水溶解液,灌胃体积为10mL/kg,1次/d,连续18d.第11天到第16天,进行Morris水迷宫的定位航行实验及空间探索实验.第17天到第18天,进行5min避暗实验.结果在Morris水迷宫实验中,与正常对照组比较,模型对照组定位航行第2天、第3天、第5天的潜伏期增加(P<0.05);与模型对照组比较,供试品组第5天的潜伏期降低(P<0.05).空间探索阶段,各组的目标象限路程百分比、时间百分比及站台穿越次数差异无统计学意义(P>0.05).在避暗实验中各组的错误潜伏期、错误次数及错误率差异均无统计学意义(P>0.05).结论陈皮提取物对APP/PS-1双转基因AD小鼠的空间学习、记忆能力有一定的改善作用. 展开更多
关键词 陈皮提取物 APP/PS-1双转基因AD小鼠 MORRIS水迷宫实验 避暗实验
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积极情感体验护理干预在PD-1/PD-L1抑制剂治疗非小细胞肺癌病人中的应用
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作者 黄秀艳 张锡岩 张仰恩 《循证护理》 2024年第11期1981-1984,共4页
目的:探讨积极情感体验护理干预模式在程序性死亡分子1(PD-1)/程序性死亡分子配体1(PD-L1)抑制剂治疗非小细胞肺癌(NSCLC)病人中的应用价值。方法:选取本院于2022年1月—2023年1月收治的80例NSCLC病人作为研究对象,所有病人均给予PD-1/P... 目的:探讨积极情感体验护理干预模式在程序性死亡分子1(PD-1)/程序性死亡分子配体1(PD-L1)抑制剂治疗非小细胞肺癌(NSCLC)病人中的应用价值。方法:选取本院于2022年1月—2023年1月收治的80例NSCLC病人作为研究对象,所有病人均给予PD-1/PD-L1抑制剂治疗,根据入院时间的先后顺序将先行PD-1/PD-L1抑制剂治疗的40例病人纳入对照组,实施常规护理措施;后行治疗的40例病人纳入研究组,实施积极情感体验护理干预模式。干预3个月后,比较两组干预前后希望水平、心理状态以及生活质量评分。结果:干预后研究组希望水平评分高于对照组(P<0.05);干预2周、干预后研究组SDS、SAS评分低于对照组,差异均有统计学意义(P<0.05);干预后,研究组FACT-L评分及各维度评分均高于对照组,差异有统计学意义(P<0.05)。结论:积极情感体验护理模式可有效改善NSCLC病人的负面情绪,提高病人希望水平,提高病人生活质量,确保PD-1/PD-L1抑制剂治疗顺利进行,促进病情康复。 展开更多
关键词 积极情感体验 PD-1/PD-L1抑制剂 非小细胞肺癌 护理
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A diagnostic experiment of the influence of CO_2on winter wheat 被引量:1
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作者 Wang Chunyi Bai Yueming Wen Min(Chinese Acaderny of Meteorological Sciences , Beijing 100081 , China) 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 1995年第2期167-175,共9页
AdiagnosticexperimentoftheinfluenceofCO_2onwinterwheatWangChunyi;BaiYueming;WenMin(ChineseAcadernyofMeteorol... AdiagnosticexperimentoftheinfluenceofCO_2onwinterwheatWangChunyi;BaiYueming;WenMin(ChineseAcadernyofMeteorologicalSciences,Be... 展开更多
关键词 winter wheat CO_2 OTC -1 open top chamber ventilated experiment.
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Parents' experience of caring for children with type 1 diabetes in China's Mainland: A qualitative study 被引量:2
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作者 Hui-Juan Tong Feng Qiu Ling Fan 《World Journal of Clinical Cases》 SCIE 2021年第11期2478-2486,共9页
BACKGROUND Parents of children with type 1 diabetes mellitus(T1DM)are under heavy caregiving stress,and parental caregivers'experience can affect the health outcomes of children with T1DM.AIM To describe the true ... BACKGROUND Parents of children with type 1 diabetes mellitus(T1DM)are under heavy caregiving stress,and parental caregivers'experience can affect the health outcomes of children with T1DM.AIM To describe the true inner feelings of parents caring for children with T1DM.METHODS Descriptive research methods were used to classify and summarize parents'experience when adapting to the role of caregivers for children with T1DM.The data was sorted and analyzed using content analysis.Themes of parents'experience caring for children with T1DM were refined,and their feelings were deeply investigated.RESULTS A total of 4 themes and 12 subthemes were identified:(1)Desire for information(disease-related information,home care information,and channels of information acquisition);(2)Skill guidance needs(insulin injection techniques,skills required for symptom management,and skills for parent-child communication);(3)Seeking emotional support(family support,peer support from other parents of children with T1DM,and professional support);and(4)Lack of social support(needs for financial support and needs for social security).Exploring the true experience of parents caring for children with T1DM is of great significance for helping them adapt to their role as caregivers.Nurses should provide professional guidance in terms of information,skills,emotion,and social support to parental caregivers. 展开更多
关键词 Type 1 diabetes CHILDREN PARENTS Care experience Qualitative study Family management
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Psychosocial Experience of Parents of Children, Adolescents and Young Adults with Type 1 Diabetes in Brazzaville
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作者 Nestor Ghislain Andzouana Mbamognoua Rockiath Adou Osseni +4 位作者 Farel Elilie Mawa Ongoth Raissa Laure Mayanda Ohouna Evariste Bouenizabila Aymande Okoumou Moko Henri Germain Monabeka 《Health》 CAS 2022年第6期617-628,共12页
Type 1 diabetes is one of the main chronics pathologies in children. Efficient care requires a good knowledge of the disease by the parents, and an exploration of psychosocial experience of the parents, who are on the... Type 1 diabetes is one of the main chronics pathologies in children. Efficient care requires a good knowledge of the disease by the parents, and an exploration of psychosocial experience of the parents, who are on the front lines of the support. Objectives: Assess the impact of parents’ level of knowledge, from their psychosocial experience and from the quality of life on the glycemic control of children, adolescents and young adults with type 1 (DT1) diabetes in Brazzaville. Patients and Methods: This was an analytical cross-sectional study with prospective data collection during 7 months at Brazzaville University Hospital CHU, involving 103 parents. We studied socio-demographic variables, the balance of children’s diabetes by glycated hemoglobin, parents’ knowledge of diabetes by questionnaire “Michigan Diabetes Research and Training Center’s Revised Diabetes Knowledge Test”. The assessment of anxiety and depression through the “Hospital Anxiety and Depression” (HAD) score. Parental stress was assessed by the “Pediatric Inventory for Parents” (PIP). Results: We reported certain anxiety symptomatology in 60 parents (58.3%). Certain depression was reported in 63 parents (61.2%), and a lesser degree of parental distress. These psychosocial disorders in the parents did not influence the glycemic balance of the children. Low socio-economic level of the family (p = 0.001), poor knowledge about diabetes (p = 0.046) and poorer quality of life (p Conclusion: Psychosocial disorders were well observed in parents of DT1 children. 展开更多
关键词 KNOWLEDGE Quality of Life Psychosocial experience PARENTS Type 1 Diabetes
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Beliefs and Experiences of Fear of Hypoglycemia and Use of Uncooked Cornstarch before Bedtime in Persons with Type 1-Diabetes
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作者 Therese Anderbro Erik Moberg +2 位作者 Ulf Adamson Per-Eric Lins Unn-Britt Johansson 《Open Journal of Nursing》 2018年第11期795-810,共16页
Introduction: Among persons living with type 1-diabetes hypoglycemia and fear of hypoglycemia remain limiting barriers for achieving optimal glucose control and a good quality of life. Fear of hypoglycemia has been fo... Introduction: Among persons living with type 1-diabetes hypoglycemia and fear of hypoglycemia remain limiting barriers for achieving optimal glucose control and a good quality of life. Fear of hypoglycemia has been found stable over time if not treated. Uncooked cornstarch has been found to reduce the risk of hypoglycemia but has not been studied in relation to fear of hypoglycemia. The aims of this study were to through clinical data, self-reported measures and clinical interviews explore subjects’ experience of using uncooked cornstarch before bedtime and their beliefs and experiences of fear of hypoglycemia. Methods: Mixed methods with both quantitative and qualitative data were used. Self-reported measures of hypoglycemia and fear of hypoglycemia were compared to subjects’ responses during a clinical interview. The interviews were analyzed with a functional behavior analytical approach. Results: A total of five subjects took part in the study. One subject perceived the uncooked cornstarch helpful in reducing hypoglycemia. Several subjects could recall frightening hypoglycemic episodes triggering their fear. Three out of the five subjects reported avoidance behaviors such as excessive self-monitoring of blood glucose or overeating related to fear of hypoglycemia. Conclusions: The uncooked cornstarch was found appetizing but was not perceived as having an effect on BG or hypoglycemia frequency. The clinical interviews confirmed previous research regarding experience of hypoglycemia and fear of hypoglycemia. 展开更多
关键词 Adults FEAR of HYPOGLYCEMIA experiences TYPE 1 DIABETES UNCOOKED CORNSTARCH
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猫疱疹病毒1型的检测及一株分离毒株的致病性
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作者 邓梏男 张家祺 +8 位作者 保志鹏 陈涛云 喻琦胜 丁露 朱晨曦 王怡 任玉鹏 贺超 张斌 《畜牧兽医学报》 CAS CSCD 北大核心 2024年第5期2253-2258,共6页
旨在调查成都地区的猫疱疹病毒1型(feline herpesvirus-1, FHV-1)的流行及遗传变异情况。试验选取2020—2023年从成都地区采集的178份具有呼吸道症状猫的眼、鼻及口咽拭子进行FHV-1核酸检测、gE基因遗传进化分析、FHV-1的分离鉴定和致... 旨在调查成都地区的猫疱疹病毒1型(feline herpesvirus-1, FHV-1)的流行及遗传变异情况。试验选取2020—2023年从成都地区采集的178份具有呼吸道症状猫的眼、鼻及口咽拭子进行FHV-1核酸检测、gE基因遗传进化分析、FHV-1的分离鉴定和致病性研究。结果发现,成都地区FHV-1阳性率为11.8%(21/178);其中宠物医院FHV-1阳性率为6.4%(7/110),猫舍FHV-1阳性率为20.6%(14/68),表明在猫舍中FHV-1感染率更高。FHV-1 gE基因的遗传进化分析结果表明,本研究扩增出的5株gE基因和疫苗株的核苷酸同源性在99.1%~100%,并发现PX-9株存在3个独特的氨基酸突变位点(L259Q、C294I、W295F)。通过CRFK细胞对5份阳性样本进行病毒的分离培养,结果PX-9毒株被成功分离鉴定。对PX-9毒株进行动物回归试验,结果表明攻毒组猫只表现出眼鼻分泌物增多,打喷嚏等临床症状,在接毒后第4天病毒拷贝数最高,为9.05×10^(7) copies·μL^(-1),且排毒期较长;攻毒猫只FHV-1病毒载量检测结果显示,气管及肺组织病毒拷贝数分别为1.7×10^(7)和3.5×10^(4) copies·μg^(-1),其它组织核酸阴性。综上表明,在成都地区仍然存在FHV-1流行,并且流行毒株有较强的致病性。 展开更多
关键词 FHV-1 流行情况 遗传变异 动物回归试验
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The Study of Experiences during Pregnancy in a Woman with Type 1 Diabetes
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作者 Ikuko Nishio Daisaku Nishimoto Masami Chujo 《Open Journal of Nursing》 2020年第11期1095-1108,共14页
<strong>Background:</strong> This study aimed to elucidate the experiences of a woman with type 1 diabetes during the course of her pregnancy. <strong>Method:</strong> This case study involved ... <strong>Background:</strong> This study aimed to elucidate the experiences of a woman with type 1 diabetes during the course of her pregnancy. <strong>Method:</strong> This case study involved 1 participant. Data were collected through a semi-structured interview. <strong>Results:</strong> The data of experiences during pregnancy of Mrs. A comprised 20 codes, 5 categories, and 11 subcategories. The 5 categories were [abnormalities in the delicate body], [difficulty in blood glucose control for safe childbirth], [the burden of visiting both obstetrics] and [internal medicine departments], and [hope for safe childbirth]. <strong>Conclusion:</strong> The categories extracted in this study included terms that suggested negative experiences, such as “abnormality”, “difficulty”, “inconvenience”, and “burden”. Mrs. A might have used these negative terms due to the difficulties in controlling her blood glucose levels. 展开更多
关键词 Type 1 Diabetes experiences PREGNANCY INSULIN
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大豆埃氏慢生根瘤菌Y63-1菌株培养基的筛选与优化
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作者 冷飘 金拂晓 +5 位作者 黄毅 张婵娟 单志慧 杨中路 袁松丽 陈海峰 《大豆科学》 CAS CSCD 北大核心 2024年第5期641-647,共7页
为了促进广谱高效大豆埃氏慢生根瘤菌Y63-1菌株的高效生产与推广应用,本研究对其培养基进行了筛选与优化。首先比较了Y63-1在YMA、TY、SM、PA和BSE 5种根瘤菌基本培养基中的生长速度,结果表明Y63-1在TY基本培养基中生长最快。以TY为基... 为了促进广谱高效大豆埃氏慢生根瘤菌Y63-1菌株的高效生产与推广应用,本研究对其培养基进行了筛选与优化。首先比较了Y63-1在YMA、TY、SM、PA和BSE 5种根瘤菌基本培养基中的生长速度,结果表明Y63-1在TY基本培养基中生长最快。以TY为基本培养基进行单因素碳源及无机盐利用试验,结果表明葡萄糖是Y63-1生长的最佳碳源,CaCl_(2)为必要的培养基成分,Rh微量元素对菌株的生长有很大的促进作用。进一步对蛋白胨、葡萄糖、酵母粉及Rh微量元素4种组分进行正交优化,获得了适宜Y63-1生长的最佳培养基,配方(1 L)为:8 g蛋白胨、10 g葡萄糖、3 g酵母粉、0.1 g CaCl_(2)·6H_(2)O、3 mL Rh微量元素,pH7.0。此培养基也能显著提升USDA110的生长速率,可以广泛应用于慢生根瘤菌菌剂的大规模生产。 展开更多
关键词 大豆根瘤菌 埃氏慢生根瘤菌Y63-1 培养基筛选 培养基优化 正交试验
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前癃通胶囊介导miR-216a-5p/TPT1/mTORC1通路调控良性前列腺增生的实验研究
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作者 黄鸿宇 郭子莘 +7 位作者 朱文雄 袁轶峰 贺菊乔 刘涛 谭梅鑫 杨金玉 曹雨昙 张熙 《湖南中医药大学学报》 CAS 2024年第3期374-382,共9页
目的通过细胞实验探讨前癃通胶囊(qian long tong capsule,QLTC)能否通过调控miR-216a-5p/肿瘤蛋白翻译控制1/哺乳动物雷帕霉素靶蛋白复合物1(miR-216a-5p/tumor protein translationally controlled 1/mammalian target of rapamycin c... 目的通过细胞实验探讨前癃通胶囊(qian long tong capsule,QLTC)能否通过调控miR-216a-5p/肿瘤蛋白翻译控制1/哺乳动物雷帕霉素靶蛋白复合物1(miR-216a-5p/tumor protein translationally controlled 1/mammalian target of rapamycin complex 1,miR-216a-5p/TPT1/mTORC1)信号通路抑制良性前列腺增生(benign prostatic hyperplasia,BPH)。方法将25只大鼠随机分为对照组(等体积生理盐水),QLTC低(56.25 mg/mL)、中(112.50 mg/mL)、高(225.00 mg/mL)剂量组,LBSC组(168.75 mg/mL),每组5只。每组灌胃1 mL/次,2次/d,连续5 d。各组大鼠麻醉后制备含药血清。根据实验目的不同,将CP-H022细胞分5步做实验处理,每部分实验进行独立分组。将miR-216a-5p过表达和沉默表达,及TPT1过表达进行对照研究;RT-qPCR法检测正常和BPH模型CP-H022细胞内miR-216a-5p表达量,并观察不同浓度QLTC处理的BPH细胞中miR-216a-5p表达量的差异;细胞集落形成实验检测细胞增殖能力;CCK-8法检测BPH模型细胞增殖;RT-qPCR法检测miR-216a-5p、TPT1 mRNA表达水平;流式细胞术检测细胞凋亡;生信分析、双荧光素酶实验验证miR-216a-5p与TPT1的靶向关系;过表达TPT1后,Western blot法检测BPH细胞中TPT1/mTORC1信号通路相关分子表达情况。结果与对照组1比较,模型组1的CP-H022细胞内miR-216a-5p表达量下调(P<0.05);不同浓度的QLTC均能上调miR-216a-5p表达量(P<0.05);根据本实验结果,本研究将选用QLTC(高剂量)组CP-H022细胞进行后续实验。与模型组2比较,QLTC组2细胞增殖减少、凋亡增加(P<0.05),B细胞淋巴瘤-2(B-cell lymphoma-2,Bcl-2)表达降低(P<0.05),Bcl-2关联X蛋白单克隆抗体(monoclonal antibody to Bcl-2 associated X protein,Bax)、cleaved Caspase-3表达升高(P<0.05)。敲低miR-216a-5p后,与模型组4比较,QLTC组4细胞增殖增强、凋亡减少(P<0.05),Bcl-2表达升高(P<0.05),Bax、cleaved Caspase-3表达降低(P<0.05)。与mimic-NC组比较,miR-216a-5p mimic组TPT1表达量降低(P<0.05);QLTC处理后,细胞TPT1、p-mTORC1表达均降低(P<0.05);过表达TPT1后BPH细胞增殖功能增强(P<0.05),凋亡减少(P<0.05),Bcl-2表达升高(P<0.05),Bax、cleaved Caspase-3表达下降(P<0.05)。结论QLTC可通过介导miR-216a-5p下调TPT1/mTORC1通路,进而抑制BPH。 展开更多
关键词 前癃通胶囊 良性前列腺增生 细胞实验 miR-216a-5p 肿瘤蛋白翻译控制1 哺乳动物雷帕霉素靶蛋白复合物1 信号通路
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党毓起治疗儿童1型糖尿病经验:基于“火力、水气”理论
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作者 于盛卫 颜青 +2 位作者 孙丽君 于佳乐 党毓起 《亚太传统医药》 2024年第8期137-140,共4页
儿童1型糖尿病主要表现为胰岛素缺乏和高血糖,其病机主要为脾肾虚衰、痰瘀互结,党毓起主任医师认为治疗儿童T1DM应根据不同的临床表现制定相应的个体化治疗方案,病证结合,辨病、辨证、辨症与辨理化指标相结合,标本同治。基于“火力、水... 儿童1型糖尿病主要表现为胰岛素缺乏和高血糖,其病机主要为脾肾虚衰、痰瘀互结,党毓起主任医师认为治疗儿童T1DM应根据不同的临床表现制定相应的个体化治疗方案,病证结合,辨病、辨证、辨症与辨理化指标相结合,标本同治。基于“火力、水气”理论治疗,运用健脾益肾、祛瘀化痰之法,配合胰岛素强化降糖,中西医结合,可明显提高患者的生活质量,使病情趋于平稳。从病因病机、治疗原则、典型病例三个方面介绍党毓起老师治疗儿童1型糖尿病的经验。 展开更多
关键词 1型糖尿病 火力 水气 名医经验 党毓起
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Experimental Instrumentation for Measurement of Reactivity Temperature and Voiding Effects at Zero Power Research Reactors
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作者 Tomas Bily Lubomir Sklenka 《Journal of Energy and Power Engineering》 2013年第12期2396-2403,共8页
The paper describes the instrumentation for studying temperature and void reactivity effects that were developed at VR-I zero power reactor. Further are described its operational parameters, fields and ways of its uti... The paper describes the instrumentation for studying temperature and void reactivity effects that were developed at VR-I zero power reactor. Further are described its operational parameters, fields and ways of its utilization as well as issues connected to its implementation into the reactor core. 展开更多
关键词 Temperature reactivity effect void reactivity effect zero power reactor reactor experiments VR-1 reactor.
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Exploring the relationship between red blood cell levels and emotional regulation through the miR191-Riok3-Mxi1 pathway
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作者 Da Zhang Xiaoqing Zhang +2 位作者 Li Yang Yan Zhao Xingang Hu 《Journal of Traditional Chinese Medical Sciences》 CAS 2024年第1期101-110,共10页
Objective:To assess emotional fluctuations,physical and mental health status,and indicators closely related to red blood cells,such as RIO kinase 3(Riok3),MAX interactor 1(Mxi1),and microRNA 191(miR191),in participant... Objective:To assess emotional fluctuations,physical and mental health status,and indicators closely related to red blood cells,such as RIO kinase 3(Riok3),MAX interactor 1(Mxi1),and microRNA 191(miR191),in participants with different levels of red blood cells.Methods:Participants who underwent physical examinations at Dongfang Hospital between April and October 2019 were divided into healthy,blood deficiency,and anemia groups(30 individuals in the healthy and blood deficiency group respectively,and 13 in the anemia group).The physical and mental conditions of the participants were evaluated through questionnaires,and emotional fluctuations were assessed through an emotion-inducing experiment,in which participants watched video segments designed to induce specific emotions.Relative expression levels of miR191,Riok3,and Mxi1 from venous blood samples were also determined.Results:The main psychological factors identified in the anemia and blood deficiency groups were obsessive-compulsive symptoms,depression,anxiety,and other negative emotions.Relative gene expression levels indicated that miR191 was upregulated and Riok3 and Mxi1 were downregulated in both the blood deficiency and anemia groups.Regarding the emotional score of disgust on video stage,the main effect was significant(F=335.58,P<.001),which showed that watching the three videos caused participants to have a dominant emotion,and there is a difference on group(F=5.35,P=.01),with higher disgust scores in the anemia and blood deficiency groups.The symptoms of blood deficiency and anemia,such as weakness in limbs were significantly negatively correlated with Riok3 and Mxi1 expression(r=-0.38 and-0.31 respectively),but was significantly positively correlated with miR191 expression(r=0.29).Conclusion:We determined that a close relationship exists between red blood cell levels and emotional status.Our findings suggest that individuals with anemia and blood deficiency are more likely to experience psychological problems and negative emotions,particularly disgust.We also demonstrate that emotional regulation is related to mir191-Riok3-Mxi1 pathway activity,identifying these pathway components are potential targets for genetic therapies in combination with psychological therapy. 展开更多
关键词 ANEMIA Blood deficiency Emotional regulation miR191-Riok3-Mxi1 pathway Emotion-inducing experiments
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肝细胞癌PD-1免疫治疗敏感性的靶基因分析
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作者 史宇泽 丁可 孙倍成 《安徽医科大学学报》 CAS 北大核心 2024年第8期1323-1329,1338,共8页
目的探究肝细胞癌(HCC)患者程序性死亡受体1(PD-1)免疫治疗敏感性的特征基因。方法通过加权基因共表达网络分析(WGCNA)及差异性分析筛选与PD-1免疫治疗敏感性相关数据集GSE202069及ERP117672中共同差异基因,将上述共同差异基因通过Lass... 目的探究肝细胞癌(HCC)患者程序性死亡受体1(PD-1)免疫治疗敏感性的特征基因。方法通过加权基因共表达网络分析(WGCNA)及差异性分析筛选与PD-1免疫治疗敏感性相关数据集GSE202069及ERP117672中共同差异基因,将上述共同差异基因通过Lasso回归筛选PD-1免疫治疗敏感性的特征基因;通过GEPIA及Ualcan数据库预测特征基因在HCC的表达水平,通过实时荧光定量反转录聚合酶链反应(RT-qPCR)、蛋白质印迹(WB)及免疫组织化学染色(IHC)实验验证其表达。构建过表达3-羟基丁酸脱氢酶1(BDH1)细胞系,通过肿瘤功能学实验细胞计数试剂盒8(CCK-8)、平板克隆、EdU染色、细胞划痕、Transwell实验探究其对肿瘤细胞增殖、迁移及侵袭能力的影响。结果通过WGCNA及差异性分析筛选出两项数据集共有118个共同差异基因,Lasso回归筛选出共同差异基因中与PD-1免疫治疗敏感性特征基因(含黄素二甲基苯胺单加氧酶3(FMO3),过氧化物酶体反式-2-烯酰辅酶A还原酶(PECR),BDH1,溶质载体家族7成员1(SLC7A1),细胞色素b5 A型(CYB5A)和磷酸烯醇丙酮酸羧激酶1(PCK1));生存分析表明BDH1与HCC最为相关(总体生存率:P<0.001;复发:P=0.007)。GEPIA及Ualcan数据库分析显示BDH1在HCC组织中低表达,通过RT-qPCR、WB及IHC对本中心收集的HCC样本进一步证实BDH1在HCC中低表达。CCK-8、平板克隆、EdU染色、细胞划痕、Transwell实验结果显示,与Hep3B pCDH组相比,过表达BDH1使得HCC细胞吸光度降低(t=4.766,P<0.01),克隆形成数目减少(t=16.02,P<0.0001),增殖细胞比例下降(t=23.13,P<0.0001),细胞迁移率减慢(t=25.28,P<0.0001),穿过小室数目减少(t=10.78,P=0.004)。结论BDH1是观察HCC患者PD-1免疫治疗敏感性的特征基因;BDH1具有抑制HCC细胞增殖、迁移和侵袭的能力。 展开更多
关键词 肝细胞癌 PD-1免疫治疗 BDH1 肿瘤功能学实验
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高产肌醇-1-磷酸合酶大肠杆菌重组工程菌的构建及其产肌醇发酵条件优化
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作者 易明花 任国平 +1 位作者 胡琼 钱蒙蒙 《中国酿造》 CAS 北大核心 2024年第12期143-148,共6页
该研究以酿酒酵母(Saccharomyces cerevisiae)SC288基因组为模版,利用基因工程技术克隆肌醇合成途径关键酶肌醇-1-磷酸合酶(IPS)的表达基因INO1,以质粒pETDuet-1为载体,构建重组质粒pETDuet-INO1,导入大肠杆菌(Escherichia coli)BL21,... 该研究以酿酒酵母(Saccharomyces cerevisiae)SC288基因组为模版,利用基因工程技术克隆肌醇合成途径关键酶肌醇-1-磷酸合酶(IPS)的表达基因INO1,以质粒pETDuet-1为载体,构建重组质粒pETDuet-INO1,导入大肠杆菌(Escherichia coli)BL21,构建重组菌株E.coli BL21/pETDuet-INO1,实现IPS在大肠杆菌高效表达,并采用单因素试验及正交试验对其产肌醇的发酵条件进行优化。结果表明,成功构建重组大肠杆菌E.coli BL21/pETDuet-INO1,其发酵产肌醇的最佳工艺条件为:初始葡萄糖添加量12 g/L,诱导温度28℃,接种量3%。在此条件下进行诱导发酵24 h,肌醇产量高达(0.81±0.007)g/L,比优化前提高60.39%。 展开更多
关键词 大肠杆菌 肌醇-1-磷酸合酶 基因工程 肌醇 正交试验 发酵条件
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原薯蓣皂苷体外抗产NDM-1耐碳青霉烯Raoultella ornithinolytica B1645-1B的机制研究
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作者 余春芳 严廷苇 +6 位作者 妥娟 彭紫晶 张思涵 胡景秀 何浩 张涵肃 孟丽雪 《湖北医药学院学报》 CAS 2024年第5期463-469,共7页
目的:研究原薯蓣皂苷(protodioscin,PD)对产碳青霉烯酶NDM-1解鸟氨酸乌拉尔菌(carbapenem-re⁃sistant Raoultella ornithinolytica)B1645-1B的体外抑菌作用及逆转耐药性机制研究。方法:采用微量肉汤稀释法测定PD对B1645-1B的最低抑菌浓... 目的:研究原薯蓣皂苷(protodioscin,PD)对产碳青霉烯酶NDM-1解鸟氨酸乌拉尔菌(carbapenem-re⁃sistant Raoultella ornithinolytica)B1645-1B的体外抑菌作用及逆转耐药性机制研究。方法:采用微量肉汤稀释法测定PD对B1645-1B的最低抑菌浓度(minimum inhibitory concentration,MIC)。应用棋盘法测定中药单体PD联合亚胺培南(Imipenem,IMP)对B1645-1B的MIC,计算抑菌浓度指数(fractional inhibitory concentration,FIC)。采用实时荧光定量PCR(quantitative real-time PCR,qRT-PCR)检测PD作用菌株B1645-1B后NDM-1 mRNA合成。利用MOE(Molecular Operating Environment)软件预测PD与NDM-1蛋白分子对接。通过十二烷基硫酸钠聚丙烯酰胺凝胶电泳(sodium dodecyl sulfate-polyacrylamide gel electrophoresis,SDS-PAGE)检测PD作用纯化后菌株B1645-1B的NDM-1蛋白表达。结果:PD对B1645-1B的MIC为10000μg/mL。PD联合IMP对B1645-1B的FIC为0.75,出现协同作用。PD作用后菌株B1645-1B的NDM-1 mRNA合成抑制和酶活性降低。结论:PD可能是一种很有前途的新型有效的协同抗菌剂及NDM-1酶抑制剂。 展开更多
关键词 原薯蓣皂苷 耐碳青霉烯解鸟氨酸乌拉尔菌 NDM-1 亚胺培南 体外抑菌实验
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MF-1模型飞行试验转捩结果初步分析 被引量:23
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作者 袁先旭 何琨 +3 位作者 陈坚强 张毅锋 王安龄 国义军 《空气动力学学报》 CSCD 北大核心 2018年第2期286-293,共8页
中国空气动力研究与发展中心于2015年12月在中国酒泉卫星发射中心成功实施了MF-1航天模型飞行试验,试验模型为锥-柱-裙轴对称体,半锥角为7°。这是我国首次针对高超声速空气动力学基础问题研究的航天模型飞行试验,飞行最大马赫数5.... 中国空气动力研究与发展中心于2015年12月在中国酒泉卫星发射中心成功实施了MF-1航天模型飞行试验,试验模型为锥-柱-裙轴对称体,半锥角为7°。这是我国首次针对高超声速空气动力学基础问题研究的航天模型飞行试验,飞行最大马赫数5.3、最大高度63.4km,飞行迎角上升段<0.5°、下降段<5°。采用薄壁测温技术测量了锥面上50个点的温度数据,并采用三维热辨识方法给出了热流数据,从而判别转捩。初步分析表明,所获取的真实飞行条件下的上升段和下降段的转捩数据是可靠的,可用于验证与标定转捩预测模型;同时验证了现有转捩预测模型对于超声速/高超声速小攻角圆锥转捩起始点预测的可行性;发现了上升段湍流-层流的再层流化与下降段层流-湍流转捩的临界高度差别,以及约0.2mm的阶差即有可能诱发强制转捩。 展开更多
关键词 MF-1 飞行试验 转捩预测
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