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基于SPR技术的抗CD80生物技术药物结合活性方法的建立
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作者 董闪闪 史卓维 +2 位作者 段徐华 邵泓 陈钢 《中国药师》 CAS 2023年第10期74-81,共8页
目的基于表面等离子共振(SPR)技术建立抗CD80生物技术药物结合活性方法,并进行方法学验证和样品测定。方法通过优化试验条件建立合适的结合活性方法,并选择合适的数据分析模型后对建立的方法进行方法学验证。结果通过对各种条件进行筛... 目的基于表面等离子共振(SPR)技术建立抗CD80生物技术药物结合活性方法,并进行方法学验证和样品测定。方法通过优化试验条件建立合适的结合活性方法,并选择合适的数据分析模型后对建立的方法进行方法学验证。结果通过对各种条件进行筛选及耐用性考察,确定了方法的试验参数:配体固定条件为pH 5.0的醋酸盐缓冲液,固定量为400~5000 RU,结合和解离速率为10~50μL·min^(-1),芯片的再生条件为pH 4.0的枸橼酸缓冲液(10 mmol·L^(-1)枸橼酸钠,100 mmol·L^(-1)NaCl),响应参数为稳态相对响应值(在进样结束后10 s范围内窗口的平均响应值),数据模型为四参数模型。根据以上参数建立了基于SPR技术抗CD80生物技术药物结合活性方法。验证结果如下:线性回归方程的决定系数为0.9994;每个效价水平相对效价测定值的相对偏倚平均值为-0.66%~0.64%,线性回归方程的斜率为0.9867;每个效价水平6次独立测试结果的几何变异系数为0.7%~1.5%,范围为64%~156%。各项验证指标均满足相关验证要求,专属性结果也较好。将建立的结合活性方法应用于抗CD80生物技术药物,测得结合活性相对效价为100%。结论本研究通过优化试验条件建立了基于SPR技术的抗CD80生物技术药物结合活性方法,该方法专属性强、重复性好、准确度高。 展开更多
关键词 表面等离子体共振 抗CD80生物技术药物 结合活性 CM5芯片
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Mitochondrial RNA editing sites affect the phylogenetic reconstruction of gymnosperms
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作者 shan-shan dong Xu-Ping Zhou +1 位作者 Tao Peng Yang Liu 《Plant Diversity》 SCIE CAS CSCD 2023年第4期485-489,共5页
RNA editing is a post-transcriptional process that alters the genetic information of mRNAs,so that the translated proteins deviate from those predicted by the genomic DNA templates.RNA editing occurs in a wide range o... RNA editing is a post-transcriptional process that alters the genetic information of mRNAs,so that the translated proteins deviate from those predicted by the genomic DNA templates.RNA editing occurs in a wide range of eukaryotes,including protists,multicellular animals,and land plants(Gray,2012;Ichinose and Sugita,2016).RNA editing in animals,dominated by A-to-I synonymous editing with low editing efficiency(20e30%),might play important roles in the regulation of gene expression(Wang et al.,2013).In contrast,RNA editing in plant organelles is usually nonsynonymous,affecting mostly the 2nd and 1st codon positions with very high editing efficiency(~80%).In plants,RNA editing is thought to affect plant phenotype and growth by restoring evolutionarily conserved amino acids and ensuring the correct folding of trans-membrane proteins on the respiratory chain complex(Sloan,2017). 展开更多
关键词 EDITING TEMPLATE
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硫辛酸对糖尿病肾病Ⅲ期患者PCX和VEGF的影响 被引量:12
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作者 董闪闪 刘璠 +5 位作者 李奉 张洁 郭玉卿 杨爱格 周慧敏 张趁儒 《中国现代医学杂志》 CAS 2018年第5期77-81,共5页
目的探讨糖尿病肾病(DN)Ⅲ期患者尿足细胞标志蛋白(PCX)及血管内皮生长因子(VEGF)水平的变化及α-硫辛酸(ALA)对其的影响。方法 122例2型糖尿病患者根据24 h尿白蛋白排泄率分为单纯糖尿病组(SDM组)62例、DNⅢ期组(NA组)60例。NA组随机分... 目的探讨糖尿病肾病(DN)Ⅲ期患者尿足细胞标志蛋白(PCX)及血管内皮生长因子(VEGF)水平的变化及α-硫辛酸(ALA)对其的影响。方法 122例2型糖尿病患者根据24 h尿白蛋白排泄率分为单纯糖尿病组(SDM组)62例、DNⅢ期组(NA组)60例。NA组随机分为ALA治疗组(NAⅠ组30例)和常规治疗组(NAⅡ30例),另选正常对照者(NC组)60例。比较ALA治疗前及治疗2周后丙二醛(MDA)、超氧化物歧化酶(SOD)、谷胱甘肽过氧化物酶(GSH-px)、尿PCX及血VEGF的变化。结果 NAⅠ组经ALA治疗后MDA、UAER、PCX及VEGF较治疗前下降(P<0.05),SOD及GSH-px较治疗前上升(P<0.05)。结论 ALA可通过抗氧化应激保护DNⅢ期患者肾小球足细胞。 展开更多
关键词 糖尿病肾病 Α-硫辛酸 尿足细胞标志蛋白 血管内皮生长因子
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Acupuncture through Baihui (DU20) to Qubin (GB7) mitigates neurological impairment after intracerebral hemorrhage 被引量:13
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作者 Xiao-Ying Liu Xiao-Hong Dai +9 位作者 Wei Zou Xue-Ping Yu Wei Teng Ying Wang Wei-Wei Yu Hui-Hui Ma Qiu-Xin Chen Peng Liu Rui-Qiao Guan shan-shan dong 《Neural Regeneration Research》 SCIE CAS CSCD 2018年第8期1425-1432,共8页
Inflammation plays an important role in nerve defects caused by intracerebral hemorrhage. Repairing brain damage by inhibiting the macrophage-inducible C-type lectin/spleen tyrosine kinase (Mincle/Syk) signaling pat... Inflammation plays an important role in nerve defects caused by intracerebral hemorrhage. Repairing brain damage by inhibiting the macrophage-inducible C-type lectin/spleen tyrosine kinase (Mincle/Syk) signaling pathway is a potential new target for treating cerebral hemorrhage. In this study, we aimed to determine whether acupuncture through Baihui (DU20) to Qubin (GBT) is an effective treatment for intracerebral hemorrhage through the Mincle/Syk signaling pathway. An intracerebral hemorrhage rat model was established by autol- ogous blood infusion into the caudate nucleus. Acupuncture through Baihui to Qubin was performed for 30 minutes, once every 12 hours, for a total of three times. Piceatannol (34.62 mg/kg), a Syk inhibitor, was intraperitoneally injected as a control. Modified neurological severity score was used to assess neurological function. Brain water content was measured. Immunohistochemistry and western blot assay were used to detect immunoreactivity and protein expression levels of Minde, Syk, and CARD9. Real-time polymerase chain reaction was used to determine interleukin-1[~ mRNA levels. Hematoxylin-eosin staining was performed to observe histopathological changes. Our re- suits showed that acupuncture through Baihui to Qubin remarkably improved neurological function and brain water content, and inhibited immunoreactivity and expression of Mincle, Syk, CARDg, and interkeukin-1β Moreover, this effect was similar to piceatannol. These find- ings suggest that acupuncture through Baihui to Qubin can improve neurological impairment after cerebral hemorrhage by inhibiting the Mincle/Syk signaling pathway. 展开更多
关键词 nerve regeneration intracerebral hemorrhage ACUPUNCTURE Baihui (DU20) Qubin (GBT) INFLAMMATION Mincle/Syk signaling pathway nerve protection neural regeneration
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Clinical characteristics of adult-type annular pancreas:A case report
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作者 Dan Yi Xiao-Bo Ding +2 位作者 shan-shan dong Chen Shao Li-Jing Zhao 《World Journal of Clinical Cases》 SCIE 2020年第22期5722-5728,共7页
BACKGROUND Annular pancreas(AP)is a rare congenital abnormal rotation of the pancreas.AP rarely occurs in adults.Pancreatic tumors and ampullary tumors are related to AP,so the discovery and treatment of AP are essent... BACKGROUND Annular pancreas(AP)is a rare congenital abnormal rotation of the pancreas.AP rarely occurs in adults.Pancreatic tumors and ampullary tumors are related to AP,so the discovery and treatment of AP are essential.CASE SUMMARY This study investigated the clinical manifestations,imaging features,complications,and treatment of six patients diagnosed with AP at the Department of Hepatobiliary and Pancreatic Surgery,First Hospital of Jilin University from January 2010 to June 2020.There were four males and two females,with an average age of 56.00±9.86 years old.In this study,abdominal pain and jaundice were the main clinical manifestations.Imaging can show the“crocodile jaw sign”or“double bubble sign”.CONCLUSION For patients with duodenal or biliary obstruction,physicians should give priority to AP when imaging examinations suggest that the duodenum is wrapped with tissue similar to the density of the pancreas.Symptomatic patients should actively undergo surgical treatment. 展开更多
关键词 Annular pancreas Pancreas/abnormalities Congenital abnormalities Biliary obstruction Duodenal obstruction Case report
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