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社区老年糖尿病患者采用医联体下家庭医生护理团队的应用
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作者 陈健宁 《中文科技期刊数据库(文摘版)医药卫生》 2024年第12期206-209,共4页
探讨基于临床罹患糖尿病的社区老年患者,应用医联体下家庭医生护理团队模式开展工作,研究分析其应用价值。方法 于在2023年1月-2023年12月作为本次研究区域时间段,从本社区随机遴选共计114例临床罹患糖尿病的老年患者当作此次试验操作主... 探讨基于临床罹患糖尿病的社区老年患者,应用医联体下家庭医生护理团队模式开展工作,研究分析其应用价值。方法 于在2023年1月-2023年12月作为本次研究区域时间段,从本社区随机遴选共计114例临床罹患糖尿病的老年患者当作此次试验操作主体,依靠随机数字表法均衡性分为2组分,即:对照组(落实传统干预模式)、观察组(应用医联体下家庭医生护理团队模式开展工作),每组各自57例。结果 较比两组的糖尿病知识知晓情况,显示在干预前(P>0.05),干预后观察组在并发症、饮食、运动等方面知识评分值均高于对照组(P<0.05)。比较组间的自我管理能力,干预前(P>0.05),观察组病患经干预后显示的饮食控制、遵医嘱用药、血糖检测、规律锻炼、足部护理、预防并处理低血糖方面上的评分值均高于对照组(P<0.05)。统计两组的血糖指标,干预落实前组间比较(P>0.05),干预后,观察组病患的空腹血糖、餐后2小时血糖测量值均低于对照组(P<0.05)。观察组呈现的并发症事件率处于低水平(P<0.05)。结论 基于临床罹患糖尿病的社区老年患者,应用医联体下家庭医生护理团队模式开展工作,较传统干预模式更具应用效果。 展开更多
关键词 尿病 医联体下家庭医生护理团队模式 尿病知识知晓情况 自我管理能力 代谢生理指标 并发症事件率
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miR-30b对大鼠糖氧剥夺性视网膜神经节细胞损伤的保护作用 被引量:7
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作者 黄婵娟 霍妍 +3 位作者 陈琛 艾李倩玉 周元国 叶剑 《中华实验眼科杂志》 CAS CSCD 北大核心 2016年第5期396-401,共6页
背景缺血缺氧损伤是引起大部分视觉系统损害的主要原因,目前尚无有效药物从根本上缓解缺血缺氧带来的损害。研究发现,微小RNA(miR)-30b有助于减轻缺血缺氧导致的心肌损伤,但其对糖氧剥夺的视网膜神经节细胞(RGCs)生存是否有类似... 背景缺血缺氧损伤是引起大部分视觉系统损害的主要原因,目前尚无有效药物从根本上缓解缺血缺氧带来的损害。研究发现,微小RNA(miR)-30b有助于减轻缺血缺氧导致的心肌损伤,但其对糖氧剥夺的视网膜神经节细胞(RGCs)生存是否有类似的保护作用鲜有文献报道。目的研究重组腺相关病毒介导的miR-30b转染对糖氧剥夺RGCs的保护作用。方法取出生后24h的8只sD大鼠眼球,剥离出视网膜组织以进行RGCs的原代培养,将原代培养的细胞分为重组腺相关病毒(rAAV)-miR对照组、rAAV—miR.30b拟似物组、rAAV—miR-30b抑制物组和PBS组,分别在培养液中添加rAAV—miRNA、rAAV—miR-30b拟似物、rAAV—miR-30b抑制物或PBS培养细胞6d,RGCs:AAV为1:10000。各组细胞分别进行低氧培养箱(37℃,体积分数5%CO2、17%N2、3%O2)联合低糖(葡萄糖质量浓度为1.0g/L)培养液进行培养以建立原代糖氧剥夺RGCs模型,并与正常培养(37℃、5%CO2)的细胞进行对照。采用细胞计数试剂盒-8(CCK-8)法检测各组细胞活力,采用免疫荧光染色法检测各组细胞中神经元特异性标志物TubulinⅢ的表达,并计算存活RGCs数目。采用Hoechst/PI染色法检测各组细胞的凋亡和坏死情况。结果培养7d的正常成熟RGCs可见1—3条完整的细长神经元突起及其分支。糖氧剥夺后随着时间延长,培养的RGCs逐渐减少和破坏,突起的主干结构破碎。rAAV·miR-30b拟似物组细胞相对活性分别为3.310±0.162,明显高于rAAV—miR-30b抑制物组和rAAV—miR对照组的0.949±0.141和0.900±0.181,差异均有统计学意义(t=10.508、10.296,均P〈0.001)。存活的RGCs可表达Tubulinm,呈红色荧光。rAAV—miR-30b拟似物组TubulinlI阳性细胞数量为(13.800±1.924)/视野,明显多于rAAV—miR-30b抑制物组的(0.600±0.548)/视野和rAAV—miR对照组的(0.800±1.304)/视野,差异均有统计学意义(t=15.141、14.912,均P〈0.001)。rAAV—miR-30b拟似物组、rAAV—miR对照组和PBS组细胞凋亡率和死亡率的总体比较差异均有统计学意义(F=10.851,P=0.002;F=6.378,P=0.013),rAAV—miR-30b拟似物组细胞凋亡率和死亡率均明显低于rAAV—miR对照组和PBS组,差异均有统计学意义(均P〈0.05)。结论低氧培养箱联合低糖培养液建立稳定的原代RGCs糖氧剥夺模型;rAAV介导的miR-30b转染可抵抗糖氧剥夺对RGCs的损伤。 展开更多
关键词 微小RNA/代谢 视网膜神经节细胞 细胞缺氧/生理病理 /生理 RNA干扰 细胞保护/药物 SD大鼠 氧剥夺
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棉花粘性特征的初步观察
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作者 范玲 苏垂龙 +1 位作者 刘红军 吕巡贤 《棉花学报》 CSCD 北大核心 1996年第6期305-306,共2页
通过棉花粘性的检测,观察棉花粘性的特征。并用扫描电镜对粘性棉花的粘点和粘团进行了观察,真实的再现了棉花加工中的粘性特征,由昆虫糖造成粘性棉花的粘点都有一个明显的结品蜜露滴粘结部分棉纤维形成,是引起棉花加工障碍的主要因... 通过棉花粘性的检测,观察棉花粘性的特征。并用扫描电镜对粘性棉花的粘点和粘团进行了观察,真实的再现了棉花加工中的粘性特征,由昆虫糖造成粘性棉花的粘点都有一个明显的结品蜜露滴粘结部分棉纤维形成,是引起棉花加工障碍的主要因子。由生理糖造成的粘性棉花的粘团无糖的结晶粒存在,且棉纤维成熟度差,不是引起棉花加工障碍的主要因子。 展开更多
关键词 棉花 粘性 生理糖 昆虫 蜜露
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Study on the Fermentation Conditions of a Mucopolysaccharide-producing Bacterium LV-1 被引量:25
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作者 梁玉丽 郭继强 +2 位作者 陈晓艺 刘志文 李宪臻 《Agricultural Science & Technology》 CAS 2009年第2期29-32,40,共5页
bacterium LV-1 which isolated from soil sample were studied bacterium was isolated by serial dilution method, the effects of carbon source, nitrogen source, the initial pH and temperature on producing polysaccharide b... bacterium LV-1 which isolated from soil sample were studied bacterium was isolated by serial dilution method, the effects of carbon source, nitrogen source, the initial pH and temperature on producing polysaccharide by it were discussed to confirm the optimum fermentation conditions. [ Result] The physicochemical properties showed that the polysaccharide was water-soluble, but insoluble in organic solvents including ethanol, butanol, and chloroform. It was neutral polysaccharide with negative charge and without reducing terminal. The pH of its solution was pH =7.5. There were no protein, fructose, uronic acid, sulphate and starch-like structure included in po/ysacchadde molecules. The optimum fermentation conditions for po/ysaccharide produc- tion were 3% mannitol as carbon source, 0.25% yeast extract as nitrogen source, culture temperature 28 ~(3 and pH =7.5. [Coadu^en] The re- search could provide basis for development and utilization of LV-1 and industrialized production of mucopolysaccharide. 展开更多
关键词 Microbial polysacchaddes Fermentation conditions ISOLATION
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Basal physiological parameters in domesticated tree shrews (Tupaia belangeri chinensis) 被引量:6
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作者 Jing WANG Xin-Li XU +8 位作者 Ze-Yang DING Rong-Rong MAO Qi-Xin ZHOU Long-Bao LV Li-Ping WANG Shuang WANG Chen ZHANG Lin XU Yue-Xiong YANG 《Zoological Research》 CAS CSCD 北大核心 2013年第2期J0035-J0040,共6页
Establishing non-human primate models of human diseases is an efficient way to narrow the large gap between basic studies and translational medicine. Multifold advantages such as simplicity of breeding, low cost of fe... Establishing non-human primate models of human diseases is an efficient way to narrow the large gap between basic studies and translational medicine. Multifold advantages such as simplicity of breeding, low cost of feeding and facility of operating make the tree shrew an ideal non-human primate model proxy. Additional features like vulnerability to stress and spontaneous diabetic characteristics also indicate that the tree shrew could be a potential new animal model of human diseases. However, basal physiological indexes of tree shrew, especially those related to human disease, have not been systematically reported. Accordingly, we established important basal physiological indexes of domesticated tree shrews including several factors: (1) body weight, (2) core body temperature and rhythm, (3) diet metabolism, (4) locomotor rhythm, (5) electroencephalogram, (6) glycometabolism and (7) serum and urinary hormone level and urinary cortisol rhythm. We compared the physiological parameters of domesticated tree shrew with that of rats and macaques. Results showed that (a) the core body temperature of the tree shrew was 39.59±0.05 °C, which was higher than that of rats and macaques; (b) Compared with wild tree shrews, with two activity peaks, domesticated tree shrews had only one activity peak from 17:30 to 19:30; (c) Compared with rats, tree shrews had poor carbohydrate metabolism ability; and (d) Urinary cortisol rhythm indicated there were two peaks at 8:00 and 17:00 in domesticated tree shrews, which matched activity peaks in wild tree shrews. These results provided basal physiological indexes for domesticated tree shrews and laid an important foundation for diabetes and stress-related disease models established on tree shrews. 展开更多
关键词 Domesticated tree shrew Basal physiological indexes Rhytlun Glycometabolism Stress-related hormone
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Intestinal sugar transport 被引量:14
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作者 Laurie A Drozdowski Alan BR Thomson 《World Journal of Gastroenterology》 SCIE CAS CSCD 2006年第11期1657-1670,共14页
Carbohydrates are an important component of the diet. The carbohydrates that we ingest range from simple monosaccharides (glucose, fructose and galactose) to disaccharides (lactose, sucrose) to complex polysacchar... Carbohydrates are an important component of the diet. The carbohydrates that we ingest range from simple monosaccharides (glucose, fructose and galactose) to disaccharides (lactose, sucrose) to complex polysaccharides. Most carbohydrates are digested by salivary and pancreatic amylases, and are further broken down into monosaccharides by enzymes in the brush border membrane (BBM) of enterocytes. For example, lactase-phloridzin hydrolase and sucraseisomaltase are two disaccharidases involved in the hydrolysis of nutritionally important disaccharides. Once monosaccharides are presented to the BBM, mature enterocytes expressing nutrient transporters transport the sugars into the enterocytes. This paper reviews the early studies that contributed to the development of a working model of intestinal sugar transport, and details the recent advances made in understanding the process by which sugars are absorbed in the intestine. 展开更多
关键词 Glucose FRUCTOSE SGLT1 GLUT2 GLUT5 Transport INTESTINE ENTEROCYTES SUGAR
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Study of Resistin gene expression in peripheral blood mononuclear cell and its gene polymorphism in a small range population 被引量:1
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作者 YANG Yun-mei XU Zhe-rong +1 位作者 WU Ling-jiao HUANG Wei-dong 《Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)》 SCIE CAS CSCD 2007年第2期132-135,共4页
Objective: To observe the expression of Resistin mRNA in peripheral blood mononuclear cells and its gene poly-morphism in coding region in a small range population in Zhejiang Province of China. Methods: Eighty-three ... Objective: To observe the expression of Resistin mRNA in peripheral blood mononuclear cells and its gene poly-morphism in coding region in a small range population in Zhejiang Province of China. Methods: Eighty-three cases of type 2 diabetes mellitus and 53 healthy people were included. The expression of Resistin mRNA in peripheral blood mononuclear cells was detected by RT-PCR and semi-quantitative PCR assay. The sequencing work was done in Resistin cDNA and gene poly-morphism was analyzed. Results: At the same condition, in 83 diabetes patients, Resistin mRNA was detected in 23 cases (11 males and 12 females). There was no Resistin mRNA expression in 53 healthy people. The ratio of PCR products between Resistin and glyceraldehyde-3-phosphate dehydrogenase (GAPDH) was from 0.564 to 1.238, averaging 0.804±0.436. The sequence of Resistin cDNA is almost identical with each other and with that in GenBank with no single nucleotide polymorphism being found. Conclusion: Resistin mRNA is expressed in human peripheral blood mononuclear cells in some type 2 diabetes mellitus, but its expression is at a low level. Among the experiment population we did not find polymorphism phenomenon in Resistin coding region. The different individual’s Resistin coding region is highly coincident. 展开更多
关键词 Resistin mRNA Peripheral blood mononuclear cells Coding region Gene polymorphism
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Clinical Observation on Physiological and Psychological Effects of Eight-Section Brocade on Type 2 Diabetic Patients 被引量:5
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作者 王芳 汪卫东 +11 位作者 张荣瑞 林颖娜 洪兰 赵阳 倪青 张林 Isiiyasutomo Tutiutitakuya Kosikawafusako Kisitaiti Havukiyutaka Suzukiakio 《Journal of Traditional Chinese Medicine》 SCIE CAS CSCD 2008年第2期101-105,共5页
Objective: To observe the physiological and psychological changing of type 2 diabetic patients after practicing Eight-Section Brocade, to evaluate the clinical curative effect, and to provide a safe and effective sel... Objective: To observe the physiological and psychological changing of type 2 diabetic patients after practicing Eight-Section Brocade, to evaluate the clinical curative effect, and to provide a safe and effective self-regulating method for type 2 diabetic patients. Methods: This study is a random controlled trial, the 54 type 2 diabetic patients were randomly assigned into the intervention and the control group. The intervention group was given a 2-month period of Eight-Section Brocade practice, then a comparison between groups was made. The intervention group continued to do Eight-Section Brocade practice for 2 months, so it was 4 months' intervention all together for this group, and then a comparison within the intervention group was made. Results: There was significant difference 4 months later on HbAlc in the intervention group (P〈0.05). There was significant difference between the intervention and control groups on obsessive-compulsive, depression, anxiety and hostility scores after 2 months' practice (P〈0.05). There was significant difference between 2 and 4 months' practice on hostilities scores within the intervention group (P〈0.05). Conclusions: As an important part of the traditional Chinese medicine, Eight-section Brocade has physiological and psycholozical effects on type 2 Diabetic Patients. 展开更多
关键词 Eight-Section Brocade Type 2 diabetes mellitus PHYSIOLOGY PSYCHOLOGY
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Growth and Physiological Features of Cyanobacterium Anabaena sp. Strain PCC 7120 in a Glucose-Mixotrophic Culture 被引量:1
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作者 喻国策 施定基 +2 位作者 蔡昭铃 丛威 欧阳藩 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2011年第1期108-115,共8页
Mixotrophic growth is one potential mode for mass culture of microalgae and cyanobacteria particularly suitable for the production of high value bioactive compounds and fine chemicals.The typical heterocystous cyanoba... Mixotrophic growth is one potential mode for mass culture of microalgae and cyanobacteria particularly suitable for the production of high value bioactive compounds and fine chemicals.The typical heterocystous cyanobacterium Anabaena sp.PCC 7120 was grown in the presence of exogenous glucose in light.Glucose improved the cell growth evidently,the maximal specific growth rate under mixotrophic condition(0.38 d 1)being 1.6-fold of that of photoautotrophic growth.Mixotrophy caused a variation in cellular pigment composition,increasing the content of chlorophyll a and decreasing the contents of carotenoid and phycobiliprotein relative to chlorophyll a.Fluorescence emission from photosystem II(PSII)relative to photosystem I was enhanced in mixotrophic cells,implying an increased energy distribution in PSII.Glucokinase(EC 2.7.1.2)activity was further induced in the presence of glucose.The mixotrophic culture was scaled up in a 15 L airlift photobioreactor equipped with an inner and an outer light source.A modified Monod model incorporating the specific growth rate and the average light intensity in the reactor was developed to describe cell growth appropriately.The understanding of mixotrophic growth and relevant physiological features of Anabaena sp.PCC 7120 would be meaningful for cultivation and exploitation of this important cyanobacterial strain. 展开更多
关键词 cyanobacteria Anabaena sp.PCC 7120 growth features mixotrophic culture PHOTOBIOREACTOR
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Enhanced Biological Phosphorus Removal in Anaerobic/Aerobic Sequencing Batch Reactor Supplied with Glucose as Carbon Source 被引量:1
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作者 刘亚男 于水利 +2 位作者 荆国林 赵冰洁 郭思远 《Journal of Donghua University(English Edition)》 EI CAS 2005年第3期95-99,共5页
Phosphorus removal performance in an aerobic/aerobic sequencing batch reactor (SBR) supplied with glucose as carbon source was investigated. It was found that there was no phosphate release concomitant with the storin... Phosphorus removal performance in an aerobic/aerobic sequencing batch reactor (SBR) supplied with glucose as carbon source was investigated. It was found that there was no phosphate release concomitant with the storing of poly-β-hydroxyalkanoate (PHA) during the anaerobic phase. Whereas, glycogen was soon built up followed by rapid consumption, at the same time, glucose was depleted rapidly. Based on the analysis of different fractions of phosphorus in activated sludge, the relative ratio of organically bound phosphorus in sludge changed at the end of anaerobic and aerobic phases. The ratios were 45.3% and 51.8% respectively. This showed that the polyphosphate broke down during the anaerobic phase to supply part of energy for PHA synthesis. The reason why there was no phosphate release might be the biosorption effect of extracellular exopolymers (EPS). It was also proved by the analysis of EPS with scanning electron microscopy (SEM) combined with energy dispersive spectrometry (EDS). The phosphorus weight percentage of EPS at the end of anaerobic phase was 9.22%. 展开更多
关键词 Biological phosphorus removal GLUCOSE extracellular exopolymers BIOSORPTION
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Telomeres:Linking stress and survival,ecology and evolution 被引量:2
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作者 Mark F.HAUSSMANN Nicole M.MARCHETTO 《Current Zoology》 SCIE CAS CSCD 北大核心 2010年第6期714-727,共14页
Telomeres are protective structures at the ends of eukaryotic chromosomes. The loss of telomeres through cell division and oxidative stress is related to cellular aging, organismal growth and disease. In this way, tel... Telomeres are protective structures at the ends of eukaryotic chromosomes. The loss of telomeres through cell division and oxidative stress is related to cellular aging, organismal growth and disease. In this way, telomeres link molecular and cellular mechanisms with organismal processes, and may explain variation in a number of important life-history traits. Here, we discuss how telomere biology relates to the study of physiological ecology and life history evolution. We emphasize current knowledge on how telomeres may relate to growth, survival and lifespan in natural populations. We finish by examining interest- ing new connections between telomeres and the glucocorticoid stress response. Glucocorticoids are often employed as indices of physiological condition, and there is evidence that the glucocorticoid stress response is adaptive. We suggest that one way that glucocorticoids impact organismal survival is through elevated oxidative stress and telomere loss. Future work needs to establish and explore the link between the glucocorticoid stress response and telomere shortening in natural populations. If a link is found, it provides an explanatory mechanism by which environmental perturbation impacts life history trajectories [Current Zoology 56 (6): 714-727, 2010]. 展开更多
关键词 CORTICOSTERONE STRESS SURVIVAL TELOMERES
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Developmental competence and ultrastructural changes of heat-stressed mouse early blastocysts produced in vitro
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作者 Pingping Qu Wenru TIAN Tao LI Zhongling JIANG Shansong GAO Zhongjie TIAN Mingzhi WANG 《Current Zoology》 SCIE CAS CSCD 北大核心 2009年第1期61-66,共6页
Mouse early blastocysts were exposed to temperatures of 39℃ and 41℃ for 2 h, respectively, to determine their developmental competence and ultrastructural changes. The results showed that heat stress at 41 ℃ for 2 ... Mouse early blastocysts were exposed to temperatures of 39℃ and 41℃ for 2 h, respectively, to determine their developmental competence and ultrastructural changes. The results showed that heat stress at 41 ℃ for 2 h, significantly reduced the percentages of expanded and hatched blastocysts, but not at 39℃ for 2 h. The average cell numbers in expanded blastocysts, which developed from early blastoeysts heat-stressed at temperatures of 39℃ and 41 ℃, were significantly reduced. The average cell numbers in hatched blastocysts subjected to heat stress were no different from those in the control group cultured at 37 ℃ . The mitochondria of the early blastocysts heat-stressed at 39℃ for 2 h, were slightly swollen, but they had recovered after culturing at 37 ℃ for 2 h. However, the mitochondria in the blastocysts heat stressed at 41 ℃ for 2 h were severely swollen, and their number increased. The ribosomes shed from the rough endoplasmic reticulum, and the number of secondary lysosomes in the plasma increased. The integrity of desmosomes was disrupted. The space between the nuclear envelope and the perivitelline membrane enlarged. The fibre fraction and the particulate fraction of nueleoli were separated. The heterochromatin in nueleoli was also increased in its quantity. There were some lamellar-shape structures and heterogeneous dense materials exhibiting in the cytoplasm. The ultrastructural changes induced by heat shock at 41 ℃ for 2 h were not reversible. In conclusion, the damage of heat stress to mitoehondria, lysosomes, ribosomes and cell nucleus, may be one of the most important factors that inhibit the normal development of mouse early blastoeysts . 展开更多
关键词 Heat tress MOUSE Early blastocysts Developmental competence ULTRASTRUCTURE
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The DNA damage response pathways: at the crossroad of protein modifications 被引量:8
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作者 Michael SY Huen Junjie Chen 《Cell Research》 SCIE CAS CSCD 2008年第1期8-16,共9页
Post-translational modifications play a crucial role in coordinating cellular response to DNA damage. Recent evidence suggests an interplay between multiple protein modifications, including phosphorylation, ubiquityla... Post-translational modifications play a crucial role in coordinating cellular response to DNA damage. Recent evidence suggests an interplay between multiple protein modifications, including phosphorylation, ubiquitylation, acetylation and sumoylation, that combine to propagate the DNA damage signal to elicit cell cycle arrest, DNA repair, apoptosis and senescence. Utility of specific post-translational modifiers allows temporal and spatial control over protein relo-calization and interactions, and may represent a means for trans-regulatory activation of protein activities. The ability to recognize these specific modifiers also underscores the capacity for signal amplification, a crucial step for the maintenance of genomic stability and tumor prevention. Here we have summarized recent findings that highlight the complexity of post-translational modifications in coordinating the DNA damage response, with emphasis on the DNA damage signaling cascade. 展开更多
关键词 genomic instability and cancer
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Role of calcium signaling in down-regulation of aggrecan induced by cyclic tensile strain in annulus fibrosus cells
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作者 郭志良 周跃 +2 位作者 李华壮 曹国永 滕海军 《Journal of Medical Colleges of PLA(China)》 CAS 2006年第6期379-382,共4页
Objective:To study the role of intracellular calcium signal pathway in the down-regulation of aggrecan induced by cyclic tensile strain in the annulus fibrosus cells. Methods:The expression of aggrecan mRNA and core p... Objective:To study the role of intracellular calcium signal pathway in the down-regulation of aggrecan induced by cyclic tensile strain in the annulus fibrosus cells. Methods:The expression of aggrecan mRNA and core protein were respectively detected with RT-PCR and western blot after the channels transmitting calcium ions were blocked with EGTA, gadolinium and verapamil. Results :EGTA. gadolinium and verapamil partially prevented the effects of cyclic tensile strain on the expression of aggrecan in annulus fibrosus cells. Conclusion:The calcium signaling is involved in the down-regulation of proteoglycan resulting from cyclic tensile strain in the annulus fibrosus cells. 展开更多
关键词 annulus fibrosus cells calcium ion PROTEOGLYCAN
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Impact of external factors on sperm motility of Sepiella maindroni
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作者 王佳 蒋霞敏 冯宪栋 《Chinese Journal of Oceanology and Limnology》 SCIE CAS CSCD 2011年第1期184-191,共8页
Sperm motility is important in reproductive biology. To understand the physiological ecology characteristics of sperm of Sepiella maindroni, we studied the activation rate, active time, and lifespan of sperm to evalua... Sperm motility is important in reproductive biology. To understand the physiological ecology characteristics of sperm of Sepiella maindroni, we studied the activation rate, active time, and lifespan of sperm to evaluate the influence of external factors, including temperature, salinity, pH, glucose, NaCl, KCl, MgCl2, CaCl2, EDTA-2Na and artificial seawater on sperm motility. The results show that the appropriate activation and motility condition for sperm were: temperature 20-30℃ (optimum 25℃), salinity 10.6-30.6 (optimum 15.9) and pH 8.0-8.6 (optimum 8.0-8.4). Sperm activity varied in different concentrations of glucose, NaCl, KCl, MgCl2 and CaCl〉 None of the selected concentrations of EDTA-2Na solution could activate the sperm. The activation rate in artificial seawater devoid of Ca2+, Mg2+ or HCO3- was low. The results should help further studies on the preservation and activation of squid sperm. 展开更多
关键词 Sepiella maindroni SPERM MOTILITY external factors
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Surgery and follow-up care for auricular keloid:a report of 156 cases 被引量:1
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作者 CHEN Liang CAO Chuan +2 位作者 LI Xiaoge YANG Dongyun LI Shirong 《Journal of Medical Colleges of PLA(China)》 CAS 2013年第2期107-112,共6页
Objective:To treat and prevent auricular keloid so as to imporve the cure rate and lower the rate of recurrence. Methods:Taking 156 sufferers of auriclar keloid at the orthopaedics department of the Southwest Hospital... Objective:To treat and prevent auricular keloid so as to imporve the cure rate and lower the rate of recurrence. Methods:Taking 156 sufferers of auriclar keloid at the orthopaedics department of the Southwest Hospital under the Third Military Medical University from June, 2008 to June, 2011 as the research subject, this research carried out retrospective analysis and summary of different surgical methods with the clinical data of subseque nt treatments, including medicament, radiotheropy, pressure, etc. Results:There was no auricular cartilage necrosis and deformation in the total of 156 cases. It was found that 134 cases were cured in a year of postoperative follow-up, getting the care rate to 85.9%. The treatment was effective on 20 cases, with the effective rate of 12.8%, while it was ineffective on 2 cases, with the ineffective rate being 1.3%. However, two cases showed tendency towards recurrence, which were treated effectively by non-surgical methods like local hormone injection. There was neither recurrence nor apparent hyperplasia of hypertrophic scars on the rest cases, with the auricle and the earlobe in good shape. Conclusion:By auricular keloid excision and stripping surgery, surgical suture tension was reduced. Glucocorticoid and radiotherapy were instantly applied to inhibit pyperplasia of cicatrical tissue. Subsequently, pressure, anti-scarring drugs and silicone membrane were adopted to ensure fine postoperative apperance and reduce recurrence. These methods were proved to be effectiveand they provided systematic and effective treatment for auricular keloid. 展开更多
关键词 AURICLE KELOID Treatment
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Bioproduction of Ethanol in Separate Hydrolysis and Fermentation and Simultaneous Saccharification and Fermentation from Cassava Stalks
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作者 Buddhiporn Sovorawet Jirasak Kongkiattikajom 《Journal of Food Science and Engineering》 2012年第2期80-87,共8页
Cellulose biomass is being investigated as a potential substrate for bioethanol production. Cassava stalks were successfully converted to ethanol by fermentation using Saccharomyces cerevisiae TISTR5048, S. cerevisiae... Cellulose biomass is being investigated as a potential substrate for bioethanol production. Cassava stalks were successfully converted to ethanol by fermentation using Saccharomyces cerevisiae TISTR5048, S. cerevisiae KM1195, S. cerevisiae KM7253 and co-culture of S. cerevisiae TISTR5048 and Candida tropicalis TISTR5045. The objective of this study was to assess the ethanol production from cassava stalks by dilute-acid pretreatment and enzymatic hydrolysis that were convertible into ethanol by mono-culture and co-culture of yeast strain. Cassava stalks 1.5% (w/v) in 0.1 M sulfuric acid was pretreated for 30 min at 135 ℃ under the pressure of 15 lb/inch2. The pretreated cassava stalk suspensions were neutralized to pH 5.5 for saccharification process. The enzyme solution (a-amylase, amyloglucosidase, cellulase, xylanase and pectinase solubilized in buffer pH 5.0) was used for hydrolysis ofpretreated cassava stalk at 50 ℃ for 24 h. The hydrolyaste was supplemented with additional nutrients. The culture was incubated at 30 ℃. The pretreatment of the stalk with dilute-acid resulted sugar yield of 0.57 g/g dry matter from enzymatic hydrolysis, which was higher than dilute-alkaline-pretreated and distilled water-pretreated stalk. The sugar hydrolysate was bioconverted to ethanol with separate hydrolysis and fermentation (SHF) and simultaneous saccharification and fermentation (SSF). The highest ethanol yields of 98.43% and 95.29% were obtained in SHF and SSF, respectively by S. cerevisiae KM1195. The fermentation time of SSF process was 24-32 h shorter than that of the SHF (= 56 h), but not significantly leading to difference in ethanol production (5.42 g/L-6.22 g/L for SSF; 5.9 g/L-6.23 g/L for SHF). 展开更多
关键词 ETHANOL cassava stalk fermentation.
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Susceptibility of Newly Introduced Potato Cultivars to Libya to Infection with Bacterial Soft Rot and the Associated Physiological Changes
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作者 Hanan S. A. Mustafa Azzeddin M. Y. Alawami 《Journal of Agricultural Science and Technology(A)》 2012年第8期976-982,共7页
Tuber slices of newly introduced potato cultivars (cvs) in Libya, namely Spunta, Pamela, Daisy, Daifla, Atlas and Apollina were tested for their susceptibility to soft rot bacterium (Erwinia carotovora subsp, carot... Tuber slices of newly introduced potato cultivars (cvs) in Libya, namely Spunta, Pamela, Daisy, Daifla, Atlas and Apollina were tested for their susceptibility to soft rot bacterium (Erwinia carotovora subsp, carotovora). Atlas cv was proved to be the most susceptible cv, meanwhile, Daisy cv was the most resistant one. The activities of pectolytic and oxidative enzymes in diseased tubers were profoundly higher than these in healthy ones. The highest enzymatic activities of pectin methyl esterase (PME) and polygalacturonase (PG) were observed in diseased tubers of Daifla cv. However, diseased tubers of Spunta gave the highest activities of polymethyl galacturonase (PMG). On the other hand, the highest significant activities of the enzyme PME in healthy tubers was detected in Pamela cv compared to other cvs. Moreover, there were insignificant differences in PG and PMG enzymes activities between healthy tubers of the different cvs. The cv Daisy gave the highest activity of the enzyme peroxidase (PO) in diseased tubers, whereas the highest activity of enzyme polyphenol oxidase (PPO) was detected in infected tubers of Atlas cv. Concerning healthy tubers, the highest activities of enzymes PO and PPO were noticed in Atlas and Pamella cvs respectively as compared to other cvs. Electrolyte leakage from plant cells was estimated by measuring electrical conductivity as indicator for permeability changes in potato tissues. Values of electrolyte leakage in infected tubers of all tested cvs showed significant increase compared with those of healthy ones, especially, with the most susceptible one. 展开更多
关键词 Libya Erwinia carotovora POTATO soft-rot.
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Duplicate preconditioning with sevoflurane in vitro improves neuroprotection in rat brain via activating the extracellular signal-regulated protein kinase 被引量:2
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作者 王胜 代志刚 +4 位作者 董希玮 郭素香 刘扬 王志萍 曾因明 《Neuroscience Bulletin》 SCIE CAS CSCD 2010年第6期437-444,共8页
Objective Sevoflurane preconditioning has been demonstrated to reduce cerebral ischemia–reperfusion(IR) injury,but the underlying mechanisms have not been fully elucidated.Besides,different protocols would usually ... Objective Sevoflurane preconditioning has been demonstrated to reduce cerebral ischemia–reperfusion(IR) injury,but the underlying mechanisms have not been fully elucidated.Besides,different protocols would usually lead to different results.The objective of this study was to determine whether dual exposure to sevoflurane improves the effect of anesthetic preconditioning against oxygen and glucose deprivation(OGD)injury in vitro.Methods Rat hippocampal slices under normoxic conditions(95%O2/5%CO2)were pre-exposed to sevoflurane 1,2 and 3 minimum alveolar concentration (MAC)for 30 min,once or twice,with 15-min washout after each exposure.The slices were then subjected to 13-min OGD treatment(95%N2/5%CO2,glucose-free),followed by 30-min reoxygenation.The population spikes(PSs)were recorded in the CA1 region of rat hippocampus.The percentage of PS amplitude at the end of 30-min reoxygenation to that before OGD treatment was calculated,since it could indicate the recovery degree of neuronal function.In addition,to assess the role of mitogen-activated protein kinases(MAPKs)in preconditioning,U0126,an inhibitor of extracellular signal–regulated protein kinase(MEK-ERK1/2,ERK1/2 MAPK),and SB203580,an inhibitor of p38 MAPK,were separately added 10 min before sevoflurane exposure.Results Preconditioning once with sevoflurane 1,2,and 3 MAC increased the percentage of PS amplitude at the end of 30-min reoxygenation to that before OGD treatment,from(15.13±3.79)%(control)to(31.88±5.36)%, (44.00±5.01)%,and(49.50±6.25)%,respectively,and twice preconditioning with sevoflurane 1,2,and 3 MAC increased the percentage to(38.53±4.36)%,(50.74±7.05)%and(55.86±6.23)%,respectively.The effect of duplicate preconditioning with sevoflurane 3 MAC was blocked by U0126[(16.23±4.62)%].Conclusion Sevoflurane preconditioning can induce neuroprotection against OGD injury in vitro,and preconditioning twice enhances this effect.Besides,the activation of extracellular signal–regulated protein kinase(MEK-ERK1/2,ERK1/2 MAPK)may be involved in this process. 展开更多
关键词 ELECTROPHYSIOLOGY hippocampal slice oxygen and glucose deprivation neuronal damage sevoflurane preconditioning mitogen-activated protein kinases
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孕晚期,准妈妈的膀胱到底遭遇了什么?
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作者 王欣 谢梦潇 《父母必读》 2019年第7期48-50,共3页
孕晚期的准妈妈之间,经常会出现这样的聊天内容:'昨晚你去了几次厕所?''4次,你呢?''6次,唉.一夜未眠呀。'夜尿频繁,是什么原因让准妈妈这么难受?'朵朵妈妈,你昨晚上是不是没有睡好?''是呀,一晚上... 孕晚期的准妈妈之间,经常会出现这样的聊天内容:'昨晚你去了几次厕所?''4次,你呢?''6次,唉.一夜未眠呀。'夜尿频繁,是什么原因让准妈妈这么难受?'朵朵妈妈,你昨晚上是不是没有睡好?''是呀,一晚上起来好几次,总是上厕所。''听说,孕晚期时很多妈妈都有这种情况?''嗯嗯,我怀老大和老二都这样,严重影响休息呀。' 展开更多
关键词 孕晚期 生理尿 子宫增大
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