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Chemical synthesis, spectroscopic properties and biochemical evaluation of an adenine nucleotide derivative 2-aminoadenosine 5'-triphosphate
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作者 WU Chun-hui CHEN Chang-bao ZHOU Jie 《Journal of Chemistry and Chemical Engineering》 2009年第4期1-7,17,共8页
An adenine nucleotide derivative 2-aminoadenosine 5'-triphosphate was chemically synthesized through four steps and was characterized with 1H NMR, 31p NMR, 13C NMR, EA and FT-IR. Its ultraviolet and fluorescence prop... An adenine nucleotide derivative 2-aminoadenosine 5'-triphosphate was chemically synthesized through four steps and was characterized with 1H NMR, 31p NMR, 13C NMR, EA and FT-IR. Its ultraviolet and fluorescence properties at various pH values were studied. Two pKa values for the compound were determined by the curves of UV absorption dependency on pH, Which were 0.68 and 4.83, respectively. The values were consistent with those calculated from ACD/Labs software. In addition, hydrolysis of the adenine nucleotide derivative in the catalysis of potato apyrase was studied. The competition of the ATP analogue with ATP for potato apyrase' active site was proved to be a sequential reaction mechanism. 展开更多
关键词 2-aminoadenosine 5'-triphosphate chemical synthesis spectroscopic property biochemical evaluation
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Electroacupuncture improves neuropathic pain Adenosine, adenosine 5'-triphosphate disodium and their receptors perhaps change simultaneously 被引量:3
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作者 Wen Ren Wenzhan Tu +2 位作者 Songhe Jiang Ruidong Cheng Yaping Du 《Neural Regeneration Research》 SCIE CAS CSCD 2012年第33期2618-2623,共6页
Applying a stimulating current to acupoints through acupuncture needles–known as electroacupuncture–has the potential to produce analgesic effects in human subjects and experimental animals. When acupuncture was app... Applying a stimulating current to acupoints through acupuncture needles–known as electroacupuncture–has the potential to produce analgesic effects in human subjects and experimental animals. When acupuncture was applied in a rat model, adenosine 5-triphosphate disodium in the extracellular space was broken down into adenosine, which in turn inhibited pain transmission by means of an adenosine A1 receptor-dependent process. Direct injection of an adenosine A1 receptor agonist enhanced the analgesic effect of acupuncture. The analgesic effect of acupuncture appears to be mediated by activation of A1 receptors located on ascending nerves. In neuropathic pain, there is upregulation of P2X purinoceptor 3 (P2X3) receptor expression in dorsal root ganglion neurons. Conversely, the onset of mechanical hyperalgesia was diminished and established hyperalgesia was significantly reversed when P2X3 receptor expression was downregulated. The pathways upon which electroacupuncture appear to act are interwoven with pain pathways, and electroacupuncture stimuli converge with impulses originating from painful areas. Electroacupuncture may act via purinergic A1 and P2X3 receptors simultaneously to induce an analgesic effect on neuropathic pain. 展开更多
关键词 ELECTROACUPUNCTURE ANALGESIA adenosine adenosine 5'-triphosphate disodium A1 receptors P2Xpudnoceptor 3 receptors neuropathic pain peripheral nervous system central nervous system regeneration neural regeneration.
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Prolonged intermittent theta burst stimulation restores the balance between A_(2A)R-and A_(1)R-mediated adenosine signaling in the 6-hydroxidopamine model of Parkinson's disease
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作者 Milica Zeljkovic Jovanovic Jelena Stanojevic +4 位作者 Ivana Stevanovic Milica Ninkovic Tihomir V.Ilic Nadezda Nedeljkovic Milorad Dragic 《Neural Regeneration Research》 SCIE CAS 2025年第7期2053-2067,共15页
An imbalance in adenosine-mediated signaling,particularly the increased A_(2A)R-mediated signaling,plays a role in the pathogenesis of Parkinson's disease.Existing therapeutic approaches fail to alter disease prog... An imbalance in adenosine-mediated signaling,particularly the increased A_(2A)R-mediated signaling,plays a role in the pathogenesis of Parkinson's disease.Existing therapeutic approaches fail to alter disease progression,demonstrating the need for novel approaches in PD.Repetitive transcranial magnetic stimulation is a non-invasive approach that has been shown to improve motor and non-motor symptoms of Parkinson's disease.However,the underlying mechanisms of the beneficial effects of repetitive transcranial magnetic stimulation remain unknown.The purpose of this study is to investigate the extent to which the beneficial effects of prolonged intermittent theta burst stimulation in the 6-hydroxydopamine model of experimental parkinsonism are based on modulation of adenosine-mediated signaling.Animals with unilateral 6-hydroxydopamine lesions underwent intermittent theta burst stimulation for 3 weeks and were tested for motor skills using the Rotarod test.Immunoblot,quantitative reverse transcription polymerase chain reaction,immunohistochemistry,and biochemical analysis of components of adenosine-mediated signaling were performed on the synaptosomal fraction of the lesioned caudate putamen.Prolonged intermittent theta burst stimulation improved motor symptoms in 6-hydroxydopamine-lesioned animals.A 6-hydroxydopamine lesion resulted in progressive loss of dopaminergic neurons in the caudate putamen.Treatment with intermittent theta burst stimulation began 7 days after the lesion,coinciding with the onset of motor symptoms.After treatment with prolonged intermittent theta burst stimulation,complete motor recovery was observed.This improvement was accompanied by downregulation of the e N/CD73-A_(2A)R pathway and a return to physiological levels of A_(1)R-adenosine deaminase 1 after 3 weeks of intermittent theta burst stimulation.Our results demonstrated that 6-hydroxydopamine-induced degeneration reduced the expression of A_(1)R and elevated the expression of A_(2A)R.Intermittent theta burst stimulation reversed these effects by restoring the abundances of A_(1)R and A_(2A)R to control levels.The shift in ARs expression likely restored the balance between dopamine-adenosine signaling,ultimately leading to the recovery of motor control. 展开更多
关键词 A_(1)R A_(2A)R adenosine receptors adenosine ecto-5′-nucleotidase intermittent theta burst stimulation non-invasive brain stimulation Parkinson's disease purinergic signalling
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Suppressing high mobility group box-1 release alleviates morphine tolerance via the adenosine5'-monophosphate-activated protein kinase/heme oxygenase-1 pathway
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作者 Tong-Tong Lin Chun-Yi Jiang +10 位作者 Lei Sheng Li Wan Wen Fan Jin-Can Li Xiao-Di Sun Chen-Jie Xu Liang Hu Xue-Feng Wu Yuan Han Wen-Tao Liu Yin-Bing Pan 《Neural Regeneration Research》 SCIE CAS CSCD 2023年第9期2067-2074,共8页
Opioids,such as morphine,are the most potent drugs used to treat pain.Long-term use results in high tolerance to morphine.High mobility group box-1(HMGB1) has been shown to participate in neuropathic or inflammatory p... Opioids,such as morphine,are the most potent drugs used to treat pain.Long-term use results in high tolerance to morphine.High mobility group box-1(HMGB1) has been shown to participate in neuropathic or inflammatory pain,but its role in morphine tolerance is unclear.In this study,we established rat and mouse models of morphine tolerance by intrathecal injection of morphine for 7 consecutive days.We found that morphine induced rat spinal cord neurons to release a large amount of HMGB1.HMGB1 regulated nuclear factor κB p65 phosphorylation and interleukin-1β production by increasing Toll-like receptor 4receptor expression in microglia,thereby inducing morphine tolerance.Glycyrrhizin,an HMGB1 inhibito r,markedly attenuated chronic morphine tole rance in the mouse model.Finally,compound C(adenosine 5’-monophosphate-activated protein kinase inhibitor) and zinc protoporphyrin(heme oxygenase-1 inhibitor)alleviated the morphine-induced release of HMGB1 and reduced nuclear factor κB p65 phosphorylation and interleukin-1β production in a mouse model of morphine tolerance and an SH-SY5Y cell model of morphine tole rance,and alleviated morphine tolerance in the mouse model.These findings suggest that morphine induces HMGB1 release via the adenosine 5’-monophosphate-activated protein kinase/heme oxygenase-1 signaling pathway,and that inhibiting this signaling pathway can effectively reduce morphine tole rance. 展开更多
关键词 adenosine 5’-monophosphate-activated protein kinase heme oxygenase-1 high mobility group box-1 INTERLEUKIN-1Β MICROGLIA morphine tolerance NEUROINFLAMMATION neuron nuclear factor-κB p65 Toll-like receptor 4
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Changes in P2Y purinoreceptor-mediated intracellular calcium signal pathways results in inositol-1, 4, 5-triphosphate-sensitive calcium stores in rat small trigeminal ganglion neurons 被引量:1
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作者 Yuanyin Wang Andong Liu +3 位作者 Jie Lei Min Xie Zhongwen Li Liecheng Wang 《Neural Regeneration Research》 SCIE CAS CSCD 2010年第12期906-910,共5页
BACKGROUND: Most of the currently available information on purinergic receptors (P2Rs) involved in pain transmission is based on results obtained in dorsal root ganglion or the spinal cord. However, the mechanism o... BACKGROUND: Most of the currently available information on purinergic receptors (P2Rs) involved in pain transmission is based on results obtained in dorsal root ganglion or the spinal cord. However, the mechanism of P2Rs in trigeminal neuralgia remains unclear. OBJECTIVE: To investigate changes in the P2R-mediated calcium signaling pathway in nociceptive trigemJnal ganglion neurons. DESIGN, TIME AND SETTING: In vitro experiments were conducted at the Patch-Clamp Laboratory of Comprehensive Experiment Center of Anhui Medical University, China from September 2008 to June 2009. MATERIALS: Thapsigargin, caffeine, suramin, and adenosine 5'-triphosphate were purchased from Sigma, USA. METHODS: Using Fura-2-based microfluorimetry, intracellular calcium concentration ([Ca^2+]i) was measured in freshly isolated adult rat small trigeminal ganglion neurons before and after drug application. MAIN OUTCOME MEASURES: Fluorescent intensities were expressed as the ratio F340/F380 to observe [Ca^2+]i changes. RESULTS: In normal extracellular solution and Ca^2+-free solution, application of thapsigargin (1 μmol/L), a sarcoplasmic reticulum Ca^2+ pump adenosine 5'-triphosphate inhibitor, as well as caffeine (20 mmol/L), a ryanodine receptor agonist, triggered [Ca^2+]i increase in small trigeminal ganglion neurons. A similar response was induced by application of adenosine 5'-triphosphate (100 μmol/L). In Ca^2+-free conditions, adenosine 5'-triphosphate-induced [Ca^2+]i transients in small trigeminal ganglion neurons were inhibited in cells pre-treated with thapsigargin (P 〈 0.01), but not by caffeine (P 〉 0.05). In normal, extracellular solution, adenosine 5'-triphosphate-induced [Ca^2+]i transients in small trigeminal ganglion neurons were partly inhibited in cells pre-treated with thapsigargin (P 〈 0.05). CONCLUSION: Inositol-1,4, 5-triphosphate (IP3)- and ryanodine-sensitive Ca^2+ stores exist in rat nociceptive trigeminal ganglion neurons. Two pathways are involved in the purinoreceptor-mediated [Ca^2+]i rise observed in nociceptive trigeminal ganglion neurons. One pathway involves the metabotropic P2Y receptors, which are associated with the IP3 sensitive Ca^2+store, and the second pathway is coupled to ionotropic P2X receptors that induce the Ca^2+ influx. 展开更多
关键词 calcium stores cytoplasmic calcium trigeminal ganglion adenosine 5'-triphosphate purinergic receptors neurotrophic factor trigeminal neuralgia neural regeneration
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金属有机框架Cu@Sc-MOF纳米酶对5'-三磷酸腺苷的比色/荧光检测
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作者 柴小静 赵瑞瑞 +2 位作者 张羱 董川 双少敏 《应用化学》 CAS CSCD 北大核心 2024年第5期728-738,共11页
通过溶剂热法制备了一种铜/钪金属有机框架(Cu@Sc-MOF)纳米酶,在H2O2存在下,Cu@Sc-MOF可催化氧化3,3’,5,5’-四甲基联苯胺(TMB)得到蓝色氧化产物oxTMB,并在652 nm处产生特征吸收峰。同样,Cu@Sc-MOF也可氧化邻苯二胺(OPD)生成2-氨基吩嗪... 通过溶剂热法制备了一种铜/钪金属有机框架(Cu@Sc-MOF)纳米酶,在H2O2存在下,Cu@Sc-MOF可催化氧化3,3’,5,5’-四甲基联苯胺(TMB)得到蓝色氧化产物oxTMB,并在652 nm处产生特征吸收峰。同样,Cu@Sc-MOF也可氧化邻苯二胺(OPD)生成2-氨基吩嗪(DAP),并在570 nm产生特征荧光发射峰(激发波长为390 nm)。由于5’-三磷酸腺苷(ATP)与Cu2+络合,抑制了Cu@Sc-MOF的催化活性,使得652 nm处的吸光度和570 nm处的荧光强度减弱,基于Cu@Sc-MOF的类过氧化物酶活性,构建了一种用于检测ATP的比色/荧光双模式光谱法。比色和荧光分析法的线性范围分别为2.50~40.00μmol/L和1.00~22.50μmol/L,检出限(LOD)分别为0.60和0.27μmol/L。将上述比色/荧光双模式分析法用于肝癌细胞HepG2细胞裂解液中ATP的检测,加标回收率分别为92.0%~101%和93.2%~97.9%,具有良好的应用前景。 展开更多
关键词 Cu@Sc-MOF 纳米酶 类过氧化物酶活性 比色/荧光 5’-三磷酸腺苷
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白花蛇舌草提取物通过AMPK/ATG5信号通路对急性胰腺炎大鼠肺损伤的保护作用机制研究
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作者 哈宗兰 马丽娜 +1 位作者 马琼 甘桂芬 《中国免疫学杂志》 CAS CSCD 北大核心 2024年第2期348-354,共7页
目的:通过5’-单磷酸腺苷活化蛋白激酶(AMPK)/自噬相关蛋白5(ATG5)信号通路,探讨白花蛇舌草提取物减轻急性胰腺炎(AP)大鼠肺损伤的机制。方法:建立AP肺损伤大鼠模型,随机分为模型组、提取物(白花蛇舌草提取物)组、3-MA(自噬抑制剂3-甲... 目的:通过5’-单磷酸腺苷活化蛋白激酶(AMPK)/自噬相关蛋白5(ATG5)信号通路,探讨白花蛇舌草提取物减轻急性胰腺炎(AP)大鼠肺损伤的机制。方法:建立AP肺损伤大鼠模型,随机分为模型组、提取物(白花蛇舌草提取物)组、3-MA(自噬抑制剂3-甲基腺嘌呤)组、AICAR(AMPK激活剂)组、提取物+AICAR组,每组15只,另取15只大鼠作为假手术组;ELISA检测血清淀粉酶(AMY)、IL-1β、IL-6、IL-18水平;检测大鼠腹水量及肺湿/干重比(W/D);HE观察胰腺及肺组织病理损伤;Western blot检测溶酶体相关膜蛋白2(LAMP2)、自噬底物p62、IL-1β前体蛋白(pro-IL-1β)、胰蛋白酶原活化肽(TAP)、AMPK、p-AMPK、ATG5、自噬标志物LC3-Ⅱ/Ⅰ、泛素特异性蛋白酶10(UPS10)表达。结果:与假手术组相比,模型组大鼠腹水量、肺W/D、胰腺和肺组织病理损伤评分、血清AMY、IL-1β、IL-6、IL-18水平、胰腺组织p62、TAP、pro-IL-1β表达、肺组织pAMPK/AMPK、ATG5、LC3-Ⅱ/Ⅰ、UPS10、pro-IL-1β表达均升高(P<0.05),胰腺和肺组织LAMP2蛋白表达降低(P<0.05);模型大鼠经白花蛇舌草提取物或自噬抑制剂3-MA干预后,上述指标均得到显著改善(P<0.05),且白花蛇舌草提取物的改善效果优于3-MA(P<0.05);而AMPK激活剂AICAR可削弱白花蛇舌草提取物对AP大鼠肺损伤的改善作用(P<0.05)。结论:白花蛇舌草提取物可通过抑制AMPK/ATG5信号通路减轻炎症反应、降低自噬水平改善AP大鼠肺损伤。 展开更多
关键词 白花蛇舌草提取物 胰腺炎 肺损伤 5’-单磷酸腺苷活化蛋白激酶 自噬相关蛋白5 炎症-自噬
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Diabetes and inflammatory diseases:An overview from the perspective of Ca^(2+)/3'-5'-cyclic adenosine monophosphate signaling 被引量:2
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作者 Leandro Bueno Bergantin 《World Journal of Diabetes》 SCIE 2021年第6期767-779,共13页
A large amount of evidence has supported a clinical link between diabetes and inflammatory diseases,e.g.,cancer,dementia,and hypertension.In addition,it is also suggested that dysregulations related to Ca^(2+)signalin... A large amount of evidence has supported a clinical link between diabetes and inflammatory diseases,e.g.,cancer,dementia,and hypertension.In addition,it is also suggested that dysregulations related to Ca^(2+)signaling could link these diseases,in addition to 3'-5'-cyclic adenosine monophosphate(cAMP)signaling pathways.Thus,revealing this interplay between diabetes and inflammatory diseases may provide novel insights into the pathogenesis of these diseases.Publications involving signaling pathways related to Ca^(2+)and cAMP,inflammation,diabetes,dementia,cancer,and hypertension(alone or combined)were collected by searching PubMed and EMBASE.Both signaling pathways,Ca^(2+)and cAMP signaling,control the release of neurotransmitters and hormones,in addition to neurodegeneration,and tumor growth.Furthermore,there is a clear relationship between Ca^(2+)signaling,e.g.,increased Ca^(2+)signals,and inflammatory responses.cAMP also regulates pro-and anti-inflammatory responses.Due to the experience of our group in this field,this article discusses the role of Ca^(2+)and cAMP signaling in the correlation between diabetes and inflammatory diseases,including its pharmacological implications.As a novelty,this article also includes:(1)A timeline of the major events in Ca^(2+)/cAMP signaling;and(2)As coronavirus disease 2019(COVID-19)is an emerging and rapidly evolving situation,this article also discusses recent reports on the role of Ca^(2+)channel blockers for preventing Ca^(2+)signaling disruption due to COVID-19,including the correlation between COVID-19 and diabetes. 展开更多
关键词 DIABETES Cancer Hypertension DEMENTIA Ca^(2+)/3'-5'-cyclic adenosine monophosphate signaling Ca^(2+)channel blockers PHARMACOTHERAPY NEURODEGENERATION COVID-19
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In Vitro Functional Study of Rice Adenosine 5'-Phosphosulfate Kinase
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作者 Wang De-zhen Chen Guo-guo +3 位作者 Lu Lu-jia Jiang Zhao-jun Rao Yu-chun Sun Mei-hao 《Rice science》 SCIE CSCD 2016年第3期152-159,共8页
Sulfate can be activated by ATP sulfurylase and adenosine 5'-phosphosulfate kinase(APSK) in vivo. Recent studies suggested that APSK in Arabidopsis thaliana regulated the partition between APS reduction and phosph... Sulfate can be activated by ATP sulfurylase and adenosine 5'-phosphosulfate kinase(APSK) in vivo. Recent studies suggested that APSK in Arabidopsis thaliana regulated the partition between APS reduction and phosphorylation and its activity can be modulated by cellular redox status. In order to study regulation of APSK in rice(Os APSK), Os APSK1 gene was cloned and its activity was analyzed. Os APSK1 C36 and C69 were found to be the conserved counterparts of C86 and C119, which involved in disulfide formation in At APSK. C36A/C69 A Os APSK1 double mutation was made by site directed mutagenesis. Os APSK1 and its mutant were prokaryotically over-expressed and purified, and then assayed for APS phosphorylation activity. Os APSK1 activity was depressed by oxidized glutathione, while the activity of its mutant was not. Further studies in the case that oxidative stress will fluctuate in vivo 3'-phosphoadenosine-5'-phosphosulfate content, and all APSK isoenzymes have similar regulation patterns are necessary to be performed. 展开更多
关键词 RICE SULFATE ASSIMILATION adenosine 5'-phosphosulfate KINASE CYSTEINE redox environment
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Electrochemical Studies of Effect of Eu^(3+) on Adenosine-5′-Diphosphate at Mercury Electrode
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作者 Liu, H Zhuang, QK +1 位作者 Ye, XZ Dai, HC 《Journal of Rare Earths》 SCIE EI CAS CSCD 1999年第2期76-78,共3页
The electrochemical behavior of the adenosine5diphosphate(ADP) was studied in 005 molL-1 MES buffer solution(pH 585) at mercury electrode. There are no reduction and oxidation waves for the adenosine5diphosphate in th... The electrochemical behavior of the adenosine5diphosphate(ADP) was studied in 005 molL-1 MES buffer solution(pH 585) at mercury electrode. There are no reduction and oxidation waves for the adenosine5diphosphate in the range of -04-14 V(vs. Ag/AgCl). In a mixture solution of Eu3+ and ADP(Eu3+ADP=14), a reduction peak is obtained at -078 V. Comparing with the cyclic voltammograms of Eu3+ ions under the same experimental conditions, it is found that the complex of Eu3+ADP can be produced in above solutions between Eu3+ion and ADP. The complex is strongly adsorbed at mercury electrode and has the following electrode reaction mechanism: Eu3++ADPEu3+ADP+e-Eu2+-ADP. 展开更多
关键词 Rare earths EUROPIUM adenosine5diphosphate ELECTROCHEMISTRY
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The Adenosine Receptor Agonist 5’-N-Ethylcarboxamide-Adenosine Increases Mouse Serum Total Homocysteine Levels, Which Is a Risk Factor for Cardiovascular Diseases
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作者 Shigeko Fujimoto Sakata Koichi Matsuda +1 位作者 Yoko Horikawa Yasuto Sasaki 《Pharmacology & Pharmacy》 2015年第10期461-470,共10页
An increase in total homocysteine (Hcy) levels (protein-bound and free Hcy in the serum) has been identified as a risk factor for vascular diseases. Hcy is a product of the methionine cycle and is a precursor of gluta... An increase in total homocysteine (Hcy) levels (protein-bound and free Hcy in the serum) has been identified as a risk factor for vascular diseases. Hcy is a product of the methionine cycle and is a precursor of glutathione in the transsulfuration pathway. The methionine cycle mainly occurs in the liver, with Hcy being exported out of the liver and subsequently bound to serum proteins. When the non-specific adenosine receptor agonist 5’-N-ethylcarboxamide-adenosine (NECA;0.1 or 0.3 mg/kg body weight) was intraperitoneally administered to mice that had been fasted for 16 h, total Hcy levels in the serum significantly increased 1 h after its administration. The NECA treatment may have inhibited transsulfuration because glutathione levels were significantly decreased in the liver. After the intraperitoneal administration of a high dose of NECA (0.3 mg/kg body weight), elevations in total Hcy levels in the serum continued for up to 10 h. The mRNA expression of methionine metabolic enzymes in the liver was significantly reduced 6 h after the administration of NECA. NECA-induced elevations in total serum Hcy levels may be maintained in the long term through the attenuated expression of methionine metabolic enzymes. 展开更多
关键词 adenosine 5’-N-Ethylcarboxamide-adenosine GLUTATHIONE HOMOCYSTEINE
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Changes in Adenosine Metabolism in Asthma. A Study on Adenosine, 5&#39-NT, Adenosine Deaminase and Its Isoenzyme Levels in Serum, Lymphocytes and Erythrocytes
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作者 Jitender Sharma Bala K. Menon +1 位作者 Vannan K. Vijayan Surendra K. Bansal 《Open Journal of Respiratory Diseases》 2015年第2期33-49,共17页
Background: Adenosine deaminase (ADA) and 5'-nucleotidase (5'-NT) play a crucial role in adenosine metabolism in healthy individuals. Adenosine is an inflammatory mediator of asthma. Changes in adenosine metab... Background: Adenosine deaminase (ADA) and 5'-nucleotidase (5'-NT) play a crucial role in adenosine metabolism in healthy individuals. Adenosine is an inflammatory mediator of asthma. Changes in adenosine metabolism and role of ADA and 5'-NT in regulating adenosine level in asthmatics and correlation of these changes with severity of asthma are not clearly understood. Methods: In this study, we screened 5217 patients, of which 2416 were diagnosed with asthma. Further, of 2416 asthmatics, only 45 patients who strictly fulfilled the selection criteria were enrolled in the study. The patients were classified into mild, moderate and severe persistent groups;each group consisted of fifteen patients. Fifteen healthy subjects served as controls. Adenosine levels and activities of 5'-NT, total ADA, ADA1 and ADA2 in serum, lymphocytes and erythrocytes were determined. The data were analysed statistically and p vice versa. 展开更多
关键词 ASTHMA adenosine METABOLISM adenosine DEAMINASE 5'-Nucleotidase
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SYNTHESIS OF ADENOSINE DERIVATIVES WITH CARBOXYALKYL SIDE CHAIN AT 2',3'OR 5'POSITION
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作者 Zeng Li SONG Jun Dong ZHANG Li He ZHANG School of Pharmaceutical Sciences,Beijing Medical University,Beijing 100083. 《Chinese Chemical Letters》 SCIE CAS CSCD 1993年第12期1053-1056,共4页
Some nucleoside carhoxylic acid derivatives,such as(±)ethyl ester of griseolic acid (4)and 9-(2'-deoxy-2'-(benzyloxycarbonyl)-methylene-β-D-rihohept-2'-enofuranosyluranate)adenine (11),were synthesiz... Some nucleoside carhoxylic acid derivatives,such as(±)ethyl ester of griseolic acid (4)and 9-(2'-deoxy-2'-(benzyloxycarbonyl)-methylene-β-D-rihohept-2'-enofuranosyluranate)adenine (11),were synthesized.The formation of lactone of 5'-deoxy-adenosineacetic acid(AAA,3)was investigated by using different reagents for lactonization from AAA,but all of the efforts failed, and sone unexpected compounds were obtained. 展开更多
关键词 DMSO HNMR 亚砜 FAB OR 5’POSITION SYNTHESIS OF adenosine DERIVATIVES WITH CARBOXYALKYL SIDE CHAIN AT 2 AT
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腺苷脱氨酶、5′-核苷酸酶及谷胱甘肽还原酶联合检测在评估乙型肝炎患者肝损伤中的临床价值
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作者 黄倩 郭守俊 《延边大学医学学报》 CAS 2024年第2期152-154,共3页
[目的]探讨腺苷脱氨酶(ADA)、5′-核苷酸酶(5′-NT)及谷胱甘肽还原酶(GR)联合检测在评估乙型肝炎(CHB)患者肝损伤中的临床价值.[方法]选择2020年1月—2024年6月间就诊的72例CHB患者列入实验组,按照肝损伤不同程度分为轻度组(n=39)、中度... [目的]探讨腺苷脱氨酶(ADA)、5′-核苷酸酶(5′-NT)及谷胱甘肽还原酶(GR)联合检测在评估乙型肝炎(CHB)患者肝损伤中的临床价值.[方法]选择2020年1月—2024年6月间就诊的72例CHB患者列入实验组,按照肝损伤不同程度分为轻度组(n=39)、中度组(n=25)、重度组(n=8),另选择同期健康体格检查的72例健康者列入对照组.采集所有研究对象血液样本,检测并比较各组血清ADA、5′-NT、GR水平.[结果]实验组血清ADA、5′-NT、GR水平均明显高于对照组(P<0.05);肝损伤重度组患者的血清ADA、5′-NT、GR水平明显高于中度组、轻度组,中度组血清ADA、5′-NT、GR水平明显高于轻度组,相比较差异均有统计学意义(P<0.05).[结论]血清ADA、5′-NT、GR联合检测可应用于CHB临床辅助诊断及肝损伤程度评估中,为临床诊断与治疗方案制定提供依据. 展开更多
关键词 乙型肝炎 肝损伤 腺苷脱氨酶 5′-核苷酸酶 谷胱甘肽还原酶
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The Adenosine Receptor Agonist 5’-<i>N</i>-Ethylcarboxamide-Adenosine Increases Glucose 6-Phosphatase Expression and Gluconeogenesis
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作者 Koichi Matsuda Yoko Horikawa +1 位作者 Yasuto Sasaki Shigeko F. Sakata 《Pharmacology & Pharmacy》 2014年第1期19-23,共5页
Intraperitoneal administration of the non-selective adenosine receptor agonist 5’-N-ethylcarboxamide-adenosine (NECA) (0.1 or 0.3 mg/kg) increased fasting serum glucose levels in mice. To clarify the mechanism respon... Intraperitoneal administration of the non-selective adenosine receptor agonist 5’-N-ethylcarboxamide-adenosine (NECA) (0.1 or 0.3 mg/kg) increased fasting serum glucose levels in mice. To clarify the mechanism responsible for this, the expression of liver glucose 6-phosphatase (G6Pase: a gluconeogenic enzyme) was analyzed, and it was found that G6Pase mRNA was increased by NECA treatment. Administration of 0.3 mg/kg NECA resulted in elevated serum glucose levels at 1 h and were further elevated at 6 h. Administration of 0.1 mg/kg NECA increased serum glucose levels at 1 h and had returned to control levels by 6 h. The increase in fasting serum glucose levels induced by NECA are thought to be caused, in part, by elevated G6Pase expression. 展开更多
关键词 5’-N-Ethylcarboxamide-adenosine GLUCOSE 6-Phosphatase GLUCONEOGENESIS
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腺苷A2a受体/Krüppel样因子5对缺血再灌注损伤大鼠心肌的影响 被引量:1
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作者 杜鹏辉 周琦 张贻凤 《国际心血管病杂志》 2023年第3期155-160,189,共7页
目的:探讨腺苷A2a受体/Krüppel样因子5(KLF5)对缺血再灌注损伤大鼠心肌的影响。方法:42只250~300 g雄性SD大鼠随机分为4组:假手术组(Sham组,n=6)、缺血再灌注组(I/R组,n=12)、缺血再灌注+腺苷A2a受体特异性激动剂CGS21680组(I/R+CG... 目的:探讨腺苷A2a受体/Krüppel样因子5(KLF5)对缺血再灌注损伤大鼠心肌的影响。方法:42只250~300 g雄性SD大鼠随机分为4组:假手术组(Sham组,n=6)、缺血再灌注组(I/R组,n=12)、缺血再灌注+腺苷A2a受体特异性激动剂CGS21680组(I/R+CGS组,n=12)、缺血再灌注+腺苷A2a受体拮抗剂ZM241385组(I/R+ZM组,n=12)。采用结扎左冠状动脉前降支再灌注的方法制备大鼠心肌缺血再灌注损伤模型。I/R+CGS组于再灌注前5 min静脉注射CGS21680后持续泵注60 min,CGS+ZM组于再灌注前5 min静脉注射ZM241385。于造模前,缺血5 min,再灌注10 min、45 min及120 min时分别记录各组大鼠的心率(HR)、平均动脉压(MAP)以及心率与收缩压乘积(RPP)。再灌注结束后取血液,酶联免疫吸附测定法检测血清心肌钙蛋白I(c TnI)和成纤维细胞生长因子21(FGF21)水平。再灌注结束后再次结扎左冠状动脉前降支,采用TTC染色法确定心肌梗死面积。处死大鼠,采用Western blot法检测缺血区心肌组织中的肿瘤坏死因子-α(TNF-α)、白细胞介素(IL)-1β和KLF5的蛋白表达水平。结果:各组造模前、Sham组各时间点HR、MAP及RPP差异无统计学意义。与Sham组比较,I/R组缺血5 min时HR、MAP及RPP降低;与I/R组比较,I/R+CGS组再灌注10 min和45 min时HR、MAP及RPP降低,I/R+ZM组再灌注10 min和45 min时HR、MAP及RPP升高(P均<0.05)。与Sham组比较,I/R组心肌梗死面积增大,血清cTnI水平升高,FGF21水平降低;与I/R组比较,I/R+CGS组心肌梗死面积减小,血清cTnI水平降低,FGF21水平升高,I/R+ZM组心肌梗死面积增大,血清c TnI水平升高,FGF21水平降低(P均<0.05)。与Sham组比较,I/R组心肌组织中TNF-α、IL-1β和KLF5的蛋白表达水平均明显升高;与I/R组相比,I/R+CGS组心肌组织中TNF-α、IL-1β和KLF5的蛋白表达水平均明显降低,I/R+ZM组心肌组织中TNF-α、IL-1β和KLF5的蛋白表达水平均明显升高(P均<0.05)。结论:激活腺苷A2a受体可抑制缺血心肌细胞中KLF5表达,降低心肌梗死再灌注损伤程度,缓解心肌细胞缺氧状态,促进心肌细胞损伤后修复,对缺血再灌注损伤大鼠心肌起保护作用。 展开更多
关键词 腺苷A2A受体 Krüppel样因子5 心肌再灌注损伤
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Autophagy occurs within an hour of adenosine triphosphate treatment after nerve cell damage:the neuroprotective effects of adenosine triphosphate against apoptosis 被引量:3
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作者 Na Lu Baoying Wang +3 位作者 Xiaohui Deng Honggang Zhao Yong Wang Dongliang Li 《Neural Regeneration Research》 SCIE CAS CSCD 2014年第17期1599-1605,共7页
After hypoxia, ischemia, or inflammatory injuries to the central nervous system, the damaged cells release a large amount of adenosine triphosphate, which may cause secondary neuronal death. Autophagy is a form of cel... After hypoxia, ischemia, or inflammatory injuries to the central nervous system, the damaged cells release a large amount of adenosine triphosphate, which may cause secondary neuronal death. Autophagy is a form of cell death that also has neuroprotective effects. Cell Counting Kit assay, monodansylcadaverine staining, flow cytometry, western blotting, and real-time PCR were used to determine the effects of exogenous adenosine triphosphate treatment at different concentrations (2, 4, 6, 8, 10 mmol/L) over time (1, 2, 3, and 6 hours) on the apoptosis and autophagy of SH-SY5Y cells. High concentrations of extracellular adenosine triphosphate induced autophagy and apoptosis of SH-SYSY cells. The enhanced autophagy first appeared, and peaked at 1 hour after treatment with adenosine triphosphate. Cell apoptosis peaked at 3 hours, and persisted through 6 hours. With prolonged exposure to the adenosine triphosphate treatment, the fraction of apoptotic cells increased. These data suggest that the SH-SY5Y neural cells initiated autophagy against apoptosis within an hour of adenosine triphosphate treatment to protect themselves against injury. 展开更多
关键词 nerve regeneration neurons adenosine triphosphate SH-SY5Y cells AUTOPHAGY APOPTOSIS cell culture monodansylcadaverine flow cytometry cell viability Bcl-2 Bax Beclin 1 neuronal damage NSFC grant neural regeneration
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Highly selective recognition of adenosine 5′-triphosphate against other nucleosides triphosphate with a luminescent metal-organic framework of [Zn(BDC)(H_2O)_2]_n(BDC = 1,4-benzenedicarboxylate)
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作者 ZHAO XiJuan FANG JingMei +1 位作者 LI YuanFang HUANG ChengZhi 《Science China Chemistry》 SCIE EI CAS 2013年第11期1651-1657,共7页
Selective recognition of adenosine 5'-triphosphate (ATP) is of great significance owing to its indispensable functions to organisms. Also, it is a challenging task because other nucleosides triphosphate hold the sa... Selective recognition of adenosine 5'-triphosphate (ATP) is of great significance owing to its indispensable functions to organisms. Also, it is a challenging task because other nucleosides triphosphate hold the same triphosphate group and structurally planar bases as ATP. It is known that metal-organic frameworks (MOFs) are a new type of sensing material. In this work, highly selective recognition of ATP against other nucleosides triphosphate is successfully achieved with a luminescent MOF of [Zn(BDC)(H2O)2]n (BDC2- = 1,4-benzenedicarboxylate). [Zn(BDC)(H2O)2]n dispersed in water shows a remarkable redshift of the emission wavelength upon addition of ATP, while cytidine 5'-triphosphate (CTP), uridine 5'-triphosphate (UTP) and guanosine 5'-triphosphate (GTP), as well as some inorganic anions such as P2074- or PO43- can't induce such spectral change as ATP. 1H NMR, 31p NMR and Raman spectra indicate that both π-π stacking interactions and the coordination of Zn(II) with adenine and the phosphate group are involved in the interaction of [Zn(BDC)(H2O)2],, with ATP. In addition, the experimental results showed that the redshift extent of the emission wavelength of [Zn(BDC)(HzO)2]n has the linear relation- ship with the concentration of ATP in the range of 0.3-1.8 mmol/L. Based on this, the detection of ATP content in the sample of ATP injection was made with satisfactory results. This system pioneers the application of MOFs in the recognition of nucle- otides, and testifies that the participation of base in the recognition process can improve the selectivity against the other nucleotides. 展开更多
关键词 adenosine 5'-triphosphate LUMINESCENT metal-organic framework
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直肠癌组织中ADAM12、A2aR表达水平与神经脉管侵犯及5-FU化疗敏感性的关系
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作者 张琦玥 李义芬 王凤西 《实用癌症杂志》 2023年第5期741-744,共4页
目的探究直肠癌组织中ADAM12、A2aR表达水平与神经脉管侵犯及5-FU化疗敏感性的关系。方法选取62例新型辅助放化疗治疗前活检石蜡标本,采用免疫组化法检测直肠癌组织中ADAM12、A2aR表达水平,采用直肠癌消退分级标准对直肠癌组织化疗敏感... 目的探究直肠癌组织中ADAM12、A2aR表达水平与神经脉管侵犯及5-FU化疗敏感性的关系。方法选取62例新型辅助放化疗治疗前活检石蜡标本,采用免疫组化法检测直肠癌组织中ADAM12、A2aR表达水平,采用直肠癌消退分级标准对直肠癌组织化疗敏感性进行评价。结果A2aR蛋白的表达与肿瘤大小、患者性别、年龄大小、神经脉管侵犯程度无关(P>0.05),与TNM分期、浸润程度有关(P<0.05)。ADAM12蛋白的表达与肿瘤大小、患者性别、年龄大小、神经脉管侵犯程度无关(P>0.05),与浸润程度、TNM分期有关(P<0.05)。直肠癌化疗敏感性与浸润程度、TNM分期、A2aR和ADAM12表达强度有关(P<0.05)。直肠癌组织中A2aR表达与5-FU化疗敏感性呈正相关(γ=0.352,P<0.001)。直肠癌组织中ADAM12表达与5-FU化疗敏感性呈正相关(γ=0.276,P<0.030)。结论直肠癌组织中ADAM12、A2aR阳性表达率较高,对神经脉管侵犯度不高,与5-FU化疗敏感性呈现正相关。 展开更多
关键词 直肠癌 A2a型腺苷受体 ADAM12 神经脉管侵犯 5-FU化疗敏感性
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基于“肾脑相济”理论探讨艾灸对阿尔茨海默病大鼠海马AMPK/mTOR信号通路的影响
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作者 王琳 朱才丰 +1 位作者 王丽 贾玉梅 《安徽中医药大学学报》 CAS 2024年第3期42-47,共6页
目的观察艾灸对阿尔茨海默病(Alzheimer’s disease,AD)大鼠腺苷酸活化蛋白激酶(adenosine 5-monophosphate activated protein kinase,AMPK)/雷帕霉素靶蛋白(mammalian target of rapamycin,mTOR)信号通路相关递质表达的影响,探讨艾灸... 目的观察艾灸对阿尔茨海默病(Alzheimer’s disease,AD)大鼠腺苷酸活化蛋白激酶(adenosine 5-monophosphate activated protein kinase,AMPK)/雷帕霉素靶蛋白(mammalian target of rapamycin,mTOR)信号通路相关递质表达的影响,探讨艾灸治疗AD的作用机制。方法将SD大鼠按照随机数字表法分为正常组8只、模型组32只,采取侧脑室注射β淀粉样蛋白(amyloidβ-protein,Aβ)_(25-35)的方法建立大鼠AD模型。将模型复制成功的大鼠随机分为模型组、药物组、艾灸组,每组8只。艾灸组大鼠用艾条灸“百会”“肾俞”“三阴交”,每次15 min,同时按3 mg/kg灌胃蒸馏水;药物组大鼠按3 mg/kg灌胃盐酸多奈哌齐;对照组及模型组大鼠按3 mg/kg灌胃蒸馏水。采用Morris水迷宫法检测大鼠行为学表现,苏木精—伊红染色法观察大鼠海马病理组织改变,Western blot法检测大鼠海马磷酸化雷帕霉素靶蛋白(phosphorylated mammalian target of rapamycin,p-mTOR)、核糖体蛋白S6激酶(ribosomal protein S6 kinase p70,P70S6K)、自噬相关基因5(autophagy-related gene 5,ATG5)、磷酸化腺苷酸活化蛋白激酶(phosphorylated adenosine 5-monophosphate activated protein kinase,p-AMPK)、微管相关蛋白1轻链3B(microtubule associated protein light chain 3B,LC3B)-Ⅱ/LC3B-Ⅰ的表达水平。结果苏木精—伊红染色结果表明,模型组海马神经元萎缩明显,与模型组比较,药物组和艾灸组海马神经元形态及分化程度均有明显改善。与正常组比较,模型组大鼠的逃避潜伏期显著延长(P<0.05),p-mTOR及P70S6K表达水平均显著升高(P<0.05),ATG5、LC3B-Ⅱ/LC3B-Ⅰ、p-AMPK表达水平均显著降低(P<0.05)。与模型组比较,药物组和艾灸组大鼠的逃避潜伏期均显著缩短(P<0.05),p-mTOR及P70S6K表达水平均显著下降(P<0.05),ATG5、LC3B-Ⅱ/LC3B-Ⅰ、p-AMPK表达水平均显著上升(P<0.05)。与药物组比较,艾灸组大鼠逃避潜伏期显著缩短(P<0.05);p-mTOR及P70S6K表达水平显著降低(P<0.05),ATG5、LC3B-Ⅱ/LC3B-Ⅰ、p-AMPK表达水平均显著上升(P<0.05)。结论艾灸能够调控AMPK/mTOR信号通路,诱导细胞自噬,阻断脑内Aβ表达,从而改善认知功能。 展开更多
关键词 阿尔茨海默病 艾灸 自噬 海马 腺苷酸活化蛋白激酶 雷帕霉素靶蛋白
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