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Hyodeoxycholic acid protects the neurovascular unit against oxygen-glucose deprivation and reoxygenation-induced injury in vitro 预览
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作者 Chang-Xiang Li Xue-Qian Wang +3 位作者 Fa-Feng Cheng Xin Yan Juan Luo Qing-Guo Wang 《中国神经再生研究:英文版》 SCIE CAS CSCD 2019年第11期1941-1949,共9页
Calculus bovis is commonly used for the treatment of stroke in traditional Chinese medicine. Hyodeoxycholic acid(HDCA) is a bioactive compound extracted from calculus bovis. When combined with cholic acid, baicalin an... Calculus bovis is commonly used for the treatment of stroke in traditional Chinese medicine. Hyodeoxycholic acid(HDCA) is a bioactive compound extracted from calculus bovis. When combined with cholic acid, baicalin and jas-minoidin, HDCA prevents hypoxia-reoxygenation-induced brain injury by suppressing endoplasmic reticulum stress-mediated apoptotic signaling. However, the effects of HDCA in ischemic stroke injury have not yet been studied. Neurovascular unit(NVU) dysfunction occurs in ischemic stroke. Therefore, in this study, we investigated the effects of HDCA on the NVU under ischemic conditions in vitro. We co-cultured primary brain microvascular endothelial cells, neurons and astrocytes using a transwell chamber co-culture system. The NVU was pre-treated with 10.16 or 2.54 μg/mL HDCA for 24 hours before exposure to oxygen-glucose deprivation for 1 hour. The cell counting kit-8 assay was used to detect cell activity. Flow cytometry and terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling were used to assess apoptosis. Enzyme-linked immunosorbent assay was used to measure the expression levels of inflammatory cytokines, including interleukin-1β, interleukin-6 and tumor necrosis factor-α, and neurotrophic factors, including brain-derived neurotrophic factor and glial cell line-derived neurotrophic factor. Oxidative stress-related factors, such as superoxide dismutase, nitric oxide, malondialdehyde and γ-glutamyltransferase, were measured using kits. Pretreatment with HDCA significantly decreased blood-brain barrier permeability and neuronal apoptosis, significantly increased transendothelial electrical resistance and γ-glutamyltransferase activity, attenuated oxidative stress damage and the release of inflammatory cytokines, and increased brain-derived neurotrophic factor and glial cell line-derived neurotrophic factor expression. Our findings suggest that HDCA maintains NVU morphological integrity and function by modulating inflammation, oxidation stress, apoptosis, and the expression o 展开更多
关键词 hyodeoxycholic acid oxygen glucose deprivation and REOXYGENATION blood-brain barrier permeability anti-oxidative anti-inflammatory ANTI-APOPTOTIC BRAIN-DERIVED NEUROTROPHIC FACTOR glial cell line-derived NEUROTROPHIC FACTOR ischemic stroke in vitro NEUROVASCULAR unit
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青海地区肝囊性包虫病术后IL-11、TNF-a、iNOS的变化及乌司他丁干预作用的临床研究 预览
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作者 阿吉德 柴金萍 +3 位作者 王皓 田青山 王向前 杨金煜 《新疆医科大学学报》 CAS 2019年第1期111-115,119共6页
目的观察青海地区肝囊性包虫病患者术后白介素-11(IL-11)、肿瘤坏死因子-a(TNF-a)、一氧化氮合成酶(iNOS)等细胞因子变化,并观察乌司他丁对肝包虫术后炎性因子及细胞因子的干预作用。方法选取2016年5月-2017年12月青海省人民医院收治的... 目的观察青海地区肝囊性包虫病患者术后白介素-11(IL-11)、肿瘤坏死因子-a(TNF-a)、一氧化氮合成酶(iNOS)等细胞因子变化,并观察乌司他丁对肝包虫术后炎性因子及细胞因子的干预作用。方法选取2016年5月-2017年12月青海省人民医院收治的肝包虫病患者60例,根据术后有无使用乌司他丁分为对照组及乌司他丁干预组。所有患者于术前、术后1d、术后3d、术后5d及术后7d抽取外周静脉血,应用ELISA方法检测术前、术后1d、术后3d、术后5d及术后7d的IL-11、TNF-a、iNOS浓度。并比较乌司他丁干预组与对照组的以上指标的在不同时点浓度的变化趋势是否存在差异。结果乌司他丁干预组与对照组相比术前、术后1d及术后3dIL-11、TNF-a、iNOS差异无统计学意义(P>0.05),重复测量的单因素方差分析显示不同干预方法间IL-11、TNF-a、iNOS差异有统计学意义(P<0.05);相同干预方法的不同时间点比较,IL-11、TNF-a、iNOS差异有统计学意义(P<0.05);乌司他丁干预组与对照组的变化趋势(时间×组别)差异有统计学意义(P<0.05)。结论乌司他丁在抑制机体炎症因子IL-11及细胞因子TNF-a、iNOS方面有很好的效果。 展开更多
关键词 肝囊性包虫病 乌司他丁 炎性因子 细胞因子 中度海拔
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Hyperbaric oxygen improves functional recovery of rats after spinal cord injury via activating stromal cell-derived factor-1/CXC chemokine receptor 4 axis and promoting brain-derived neurothrophic factor expression
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作者 Xiang-Long Meng Yong Hai +6 位作者 Xi-Nuo Zhang Yun-Sheng Wang Xue-Hua Liu Lin-Lin Ma Rong Yue Gang Xu Zhuo Li 《中华医学杂志:英文版》 SCIE CAS CSCD 2019年第6期699-706,共8页
Background: Spinal cord injury (SCI) is a worldwide medical concern. This study aimed to elucidate the mechanism underlying protective effect of hyperbaric oxygen (HBO) against SCI-induced neurologic defects in rats v... Background: Spinal cord injury (SCI) is a worldwide medical concern. This study aimed to elucidate the mechanism underlying protective effect of hyperbaric oxygen (HBO) against SCI-induced neurologic defects in rats via exploring the stromal cell-derived factor-1 (SDF-1)/CXC chemokine receptor 4 (CXCR4) axis and expression of brain-derived neurotrophic factor (BDNF). Methods: An acute SCI rat model was established in Sprague-Dawley rats using the Allen method. Sixty rats were divided into four groups (w = 15 in each group): sham-operated, SCI, SCI treated with HBO (SCI + HBO), and SCI treated with both HBO and AMD3100 (an antagonist of CXCR4;SCI + HBO + AMD) groups. The rats were treated with HBO twice a day for 3 days and thereafter once a day after the surgery for up to 28 days. Following the surgery, neurologic assessments were performed with the Basso-Bettie-Bresnahan (BBB) scoring system on postoperative day (POD) 7, 14, 21, and 28. Spinal cord tissues were harvested to assess the expression of SDF-1, CXCR4, and BDNF at mRNA and protein levels, using quantitative real-time polymerase chain reaction, Western blot analysis, and histopathologic analysis. Results: HBO treatment recovered SCI-induced descent of BBB scores on POD 14,(1.25±0.75 vs. 1.03 ±0.66, P< 0.05), 21 (5.27± 0.89 vs. 2.56± 1.24, P< 0.05), and 28 (11.35±0.56 vs. 4.23± 1.20, P<0.05) compared with the SCI group. Significant differences were found in the mRNA levels of SDF-1 (mRNA: day 21, SCI + HBO vs. SCI + HBO + AMD, 2.89± 1.60 vs. 1.56±0.98, P<0.05), CXCR4 (mRNA: day 7, SCI + HBO vs. SCI, 2.99± 1.60 vs. 1.31 ±0.98, P<0.05;day 14, SCI + HBO vs. SCI + HBO + AMD, 4.18± 1.60 vs. 0.80±0.34, P<0.05;day 21, SCI + HBO vs. SCI, 2.10±1.01 vs.1.15±0.03, P<0.05), and BDNF (mRNA: day 7, SCI + HBO vs. SCI, 3.04±0.41 vs. 2.75±0.31, P<0.05;day 14, SCI + HBO vs. SCI, 3.88± 1.59 vs. 1.11 ±0.40, P<0.05), indicating the involvement of SDF-1/CXCR4 axis in the protective effect of HBO. Conclusions: HBO might promote the recovery of neurologic func 展开更多
关键词 BRAIN-DERIVED NEUROTROPHIC factor CXC CHEMOKINE receptor 4 HYPERBARIC oxygen NEUROTROPHIC STROMAL cell-derived factor-1 Spinal cord injury
Novel miRNA,miR-sc14,promotes Schwann cell proliferation and migration 预览
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作者 Xi-Meng Ji Shan-Shan Wang +5 位作者 Xiao-Dong Cai Xing-Hui Wang Qian-Yan Liu Pan Wang Zhang-Chun Cheng Tian-Mei Qian 《中国神经再生研究:英文版》 SCIE CAS CSCD 2019年第9期1651-1656,共6页
MicroRNAs refer to a class of endogenous,short non-coding RNAs that mediate numerous biological functions.MicroRNAs regulate various physiological and pathological activities of peripheral nerves,including peripheral ... MicroRNAs refer to a class of endogenous,short non-coding RNAs that mediate numerous biological functions.MicroRNAs regulate various physiological and pathological activities of peripheral nerves,including peripheral nerve repair and regeneration.Previously,using a rat sciatic nerve injury model,we identified many functionally annotated novel microRNAs,including miR-sc14.Here,we used real-time reverse transcription-polymerase chain reaction to examine miR-sc14 expression in rat sciatic nerve stumps.Our results show that miRsc14 is noticeably altered following sciatic nerve injury,being up-regulated at 1 day and diminished at 7 days.EdU and transwell chamber assay results showed that miR-sc14 mimic promoted proliferation and migration of Schwann cells,while miR-sc14 inhiThe study was approved by the Jiangsu Provincial Laboratory Animal Management Committee,China on March 4,2015(approval No.20150304-004).bitor suppressed their proliferation and migration.Additionally,bioinformatic analysis examined potential target genes of miR-sc14,and found that fibroblast growth factor receptor 2 might be a potential target gene.Specifically,our results show changes of miR-sc14 expression in the sciatic nerve of rats at different time points after nerve injury.Appropriately,up-regulation of miR-sc14 promoted proliferation and migration of Schwann cells.Consequently,miR-sc14 may be an intervention target to promote repair of peripheral nerve injury.The study was approved by the Jiangsu Provincial Laboratory Animal Management Committee,China on March 4,2015(approval No.20150304-004). 展开更多
关键词 NERVE REGENERATION novel microRNAs miR-sc14 PERIPHERAL NERVE injury cell PROLIFERATION cell MIGRATION Schwann cells fibroblast growth factor receptor 2 biological functions PERIPHERAL NERVE REGENERATION regulatory mechanisms neural REGENERATION
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穴位埋线疗法的分子生物学机制研究进展
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作者 魏玉婷 曹朝霞 +1 位作者 李小娟 严兴科 《中华中医药杂志》 CAS CSCD 北大核心 2019年第8期3633-3636,共4页
穴位埋线疗法临床疗效肯定,其机制研究也日益深入。文章从神经递质、免疫细胞、细胞因子的合成和释放,酶活性的调节及细胞表面受体、疾病相关基因表达的调控方面对穴位埋线的分子生物学机制进行了总结,同时探讨了现有研究在实验设计上... 穴位埋线疗法临床疗效肯定,其机制研究也日益深入。文章从神经递质、免疫细胞、细胞因子的合成和释放,酶活性的调节及细胞表面受体、疾病相关基因表达的调控方面对穴位埋线的分子生物学机制进行了总结,同时探讨了现有研究在实验设计上存在的不足,以期为今后的研究提供参考。 展开更多
关键词 穴位埋线 神经递质 免疫细胞 细胞因子 基因 分子生物学机制
PLZF^posc-KIT^pos-delineated A1-A4-differentiating spermatogonia by subset and stage detection upon Bouin fixation
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作者 Rui-Ling Tang Li-Qing Fan 《亚洲男性学杂志:英文版》 SCIE CAS CSCD 2019年第3期309-318,共10页
While hallmarks of rodent spermatogonia stem cell biomarkers' heterogeneity have recently been identified, their stage and subset distributions remain unclear. Furthermore, it is currently difficult to accurately ... While hallmarks of rodent spermatogonia stem cell biomarkers' heterogeneity have recently been identified, their stage and subset distributions remain unclear. Furthermore, it is currently difficult to accurately identify subset-specific SSC marker distributions due to the poor nuclear morphological characteristics associated with fixation in 4% paraformaldehyde. In the present study, testicular cross-sections and whole-mount samples were Bouin fixed to optimize nuclear resolution and visualized by immunohistochemistry (IHC) and immunofluorescence (IF). The results identified an expression pattern of PLZFhighc-KITpos in A1 spermatogonia, while A2–A4-differentiating spermatogonia were PLZFlowc-KITpos. Additionally, this procedure was used to examine asymmetrically expressing GFRA1 and PLZF clones, asymmetric Apr and false clones were distinguished based on the presence or absence of TEX14, a molecular maker of intercellular bridges, despite having identical nuclear morphology and intercellular distances that were <25 μm. In conclusion, this optimized Bouin fixation procedure facilitates the accurate identification of spermatogonium subsets based on their molecular profiles and is capable of distinguishing asymmetric and false clones. Therefore, the findings presented herein will facilitate further morphological and functional analysis studies and provide further insight into spermatogonium subtypes. 展开更多
关键词 asymmetric division cellular homolog of FELINE sarcoma viral oncogene v-kit false CLONES glial CELL line-derived neurotrophic factor receptor alpha 1 PROMYELOCYTIC leukemia zinc finger SPERMATOGONIA stem CELL
镁对子痫前期患者内皮祖细胞增殖、黏附和凋亡的影响 预览
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作者 李丽 王新玲 +1 位作者 刘素新 霍琰 《中国组织工程研究》 CAS 北大核心 2019年第21期3371-3377,共7页
背景:镁离子可通过自由基清除、细胞膜稳定、炎症抑制等作用降低血管内皮细胞对不利刺激的敏感性,调节血管内皮功能,但镁离子对内皮祖细胞的作用尚不清楚。目的:探讨镁对子痫前期患者内皮祖细胞增殖、黏附和凋亡的影响。方法:纳入2016年... 背景:镁离子可通过自由基清除、细胞膜稳定、炎症抑制等作用降低血管内皮细胞对不利刺激的敏感性,调节血管内皮功能,但镁离子对内皮祖细胞的作用尚不清楚。目的:探讨镁对子痫前期患者内皮祖细胞增殖、黏附和凋亡的影响。方法:纳入2016年3月至2018年10月河北省人民医院产科17例子痫前期产妇与15名正常妊娠产妇,从两组产妇脐血中分离培养内皮祖细胞。将每例子痫前期产妇脐血来源内皮祖细胞分4组干预:子痫前期组以PBS干预,低、中、高浓度镁离子组分别以含4,8,16mmol/L镁离子的培养基干预;正常妊娠产妇脐血来源内皮祖细胞以PBS干预,作为对照组。干预24h后,检测各组细胞的增殖、黏附、凋亡、炎症因子(白细胞介素6、白细胞介素8、肿瘤坏死因子α与单核细胞趋化蛋白1)及氧化应激(超氧化物歧化酶、丙二醛)水平。实验方案已获河北省人民医院伦理委员会批准,伦理审批号:2013临审13号。结果与结论:①与对照组比较,子痫前期组细胞增殖与黏附数量明显降低(P<0.05),凋亡率升高(P<0.05),Bax和Active caspase-3蛋白表达升高(P<0.05),Bcl-2蛋白表达降低(P<0.05),白细胞介素6、白细胞介素8、肿瘤坏死因子α与单核细胞趋化蛋白1、丙二醛水平升高(P<0.05),超氧化物歧化酶活性降低(P<0.05);②与子痫前期组比较,镁离子干预各组细胞增殖与黏附数量升高(P<0.05),凋亡率降低(P<0.05),Bax和Activecaspase-3蛋白表达降低(P<0.05),Bcl-2蛋白表达升高(P<0.05),炎症因子水平明显下降(P<0.05),超氧化物歧化酶活性升高(P<0.05),丙二醛水平降低(P<0.05),并且高浓度镁离子组改善程度优于低、中浓度镁离子组(P<0.05);③结果表明,镁离子可促进子痫前期患者体外内皮祖细胞的增殖和黏附,抑制炎性因子的分泌,降低凋亡率和氧化应激水平。 展开更多
关键词 镁离子 子痫前期 脐血 内皮祖细胞 细胞增殖 细胞黏附 细胞凋亡 炎性因子
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Folic acid contributes to peripheral nerve injury repair by promoting Schwann cell proliferation, migration, and secretion of nerve growth factor 预览
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作者 Wei-Bo Kang Yong-Jie Chen +1 位作者 Du-Yi Lu Jia-Zhi Yan 《中国神经再生研究:英文版》 SCIE CAS CSCD 2019年第1期132-139,共8页
关键词 神经生长 生长因素 分泌物 损害 细胞 修理 移植 因素集
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Significant benefits of osimertinib in treating acquired resistance to first-generation EGFR-TKIs in lung squamous cell cancer:A case report 预览
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作者 Yan Zhang Hui-Min Chen +6 位作者 Yong-Mei Liu Feng Peng Min Yu Wei-Ya Wang Heng Xu Yong-Sheng Wang You Lu 《世界临床病例杂志》 2019年第10期1221-1229,共9页
BACKGROUND Lung squamous cell cancer(LSCC)rarely harbors epidermal growth factor receptor(EGFR)mutations,even much rarer for acquired T790M mutation.Although clinical trials of AURA series illustrated that non-small c... BACKGROUND Lung squamous cell cancer(LSCC)rarely harbors epidermal growth factor receptor(EGFR)mutations,even much rarer for acquired T790M mutation.Although clinical trials of AURA series illustrated that non-small cell lung cancer(NSCLC)with EGFR T790M mutation can benefit from osimertinib,only five LSCC patients were enrolled in total;moreover,the efficacy for LSCC was not shown in the results.Therefore,the response of LSCC to osimertinib is still unclear to date.CASE SUMMARY We report an LSCC case with T790M-related acquired resistance after treatments with first-generation EGFR-tyrosine kinase inhibitors(EGFR-TKIs)and benefited from osimertinib significantly.A 63-year-old Chinese man was diagnosed with stage IV(cT2N2M1b)LSCC harboring an EGFR exon 19-deletion mutation.Following disease progression after gefitinib and multi-line chemotherapy,rebiopsy was conducted.Molecular testing of EGFR by amplification refractory mutation system-polymerase chain reaction detected the exon 19-deletion without T790M mutation.Therefore,the patient was given erlotinib,but progression developed only 3 mo later.Then the frozen re-biopsy tissue was tested by next-generation sequencing(NGS),which detected an EGFR T790M mutation.However,he was very weak with symptoms of dysphagia and cachexia.Fortunately,osimertinib was started,leading to alleviation from the symptoms.Four months later,normal deglutition was restored and partial response was achieved.Finally,the patient achieved an overall survival time period of 29 mo.CONCLUSION Our findings highlight that EGFR T790M mutation may also be an important acquired drug resistance mechanism for LSCC and offer direct evidence of the efficacy of osimertinib in LSCC with T790M mutation.NGS and better preservation conditions may contribute to higher sensitivity of EGFR T790M detection. 展开更多
关键词 LUNG SQUAMOUS cell CANCER LUNG CANCER EPIDERMAL growth factor receptor mutation T790M Osimertinib TYROSINE kinase inhibitor Targeted therapy Case report
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鼠、人源巨噬细胞源性泡沫细胞模型的建立及比较 预览
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作者 祁芳菲 楼滨 杨青 《复旦学报:医学版》 CAS CSCD 北大核心 2019年第4期445-453,共9页
目的建立鼠、人源巨噬细胞源性泡沫细胞模型并比较其生物学特征。方法体外培养鼠源RAW264.7和人源THP-1巨噬细胞,经氧化型低密度脂蛋白(oxidized lowdensity lipoprotein,ox-LDL)刺激后,油红O染色,于荧光倒置显微镜下观察泡沫细胞形态... 目的建立鼠、人源巨噬细胞源性泡沫细胞模型并比较其生物学特征。方法体外培养鼠源RAW264.7和人源THP-1巨噬细胞,经氧化型低密度脂蛋白(oxidized lowdensity lipoprotein,ox-LDL)刺激后,油红O染色,于荧光倒置显微镜下观察泡沫细胞形态及脂质富集情况。采用qRT-PCR技术检测ox-LDL对细胞内炎性因子表达的影响;流式细胞术检测ox-LDL对细胞凋亡的影响;酶标仪分别检测ox-LDL对细胞内脂质过氧化标志物活性氧(reactive oxygen species,ROS)和丙二醛(malondialdehyde,MDA)水平的影响;HPLC检测ox-LDL对鼠、人源巨噬细胞内催化色氨酸沿犬尿氨酸途径(kynurenine pathway,KP)分解代谢的限速酶吲哚胺2,3-双加氧化酶1(indoleamine 2,3 dioxygenase 1,IDO1)活性的影响。结果鼠源RAW264.7和人源THP-1巨噬细胞经ox-LDL处理后,大量脂质在细胞内富集沉积,形成泡沫细胞。ox-LDL既可诱发巨噬细胞内炎性因子高表达,也会引起ROS和MDA水平显著升高,表明ox-LDL可以诱导鼠源RAW264.7和人源THP-1巨噬细胞内炎症反应和脂质过氧化产生。ox-LDL更容易引发人源THP-1巨噬细胞的凋亡,而对鼠源RAW264.7巨噬细胞凋亡却无明显影响。ox-LDL在鼠源RAW264.7和人源THP-1巨噬细胞中均可激活KP。结论鼠源RAW264.7和人源THP-1巨噬细胞均可通过ox-LDL处理来建立稳定的鼠、人源巨噬细胞源性泡沫细胞模型。 展开更多
关键词 泡沫细胞 RAW264.7 THP-1 炎症因子 活性氧(ROS) 丙二醛(MDA) 吲哚胺2 3-双加氧化酶1(IDO1)
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水凝胶支架材料在牙髓再生中的研究进展 预览
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作者 夏鹍 张旗 《口腔医学》 CAS 2019年第7期651-654,659共5页
近年来用于牙髓再生的支架材料逐渐被重视,并成为研究热点。其中水凝胶凭借一定的韧性、流变性、良好的生物相容性和可降解性等优势,被越来越广泛地应用于牙髓再生的研究中。水凝胶在调控干细胞命运、调节生长因子释放、装载抗菌抗炎药... 近年来用于牙髓再生的支架材料逐渐被重视,并成为研究热点。其中水凝胶凭借一定的韧性、流变性、良好的生物相容性和可降解性等优势,被越来越广泛地应用于牙髓再生的研究中。水凝胶在调控干细胞命运、调节生长因子释放、装载抗菌抗炎药物等方面都发挥着重要作用。该文就水凝胶支架材料在牙髓再生中的研究进展作一综述。 展开更多
关键词 牙髓再生 支架材料 水凝胶 干细胞 生长因子 药物
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Application of malignant pleural effusion cell blocks in the diagnosis and personalized treatment of advanced non-small cell lung carcinoma 预览
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作者 Wei Luan Nier Cha +1 位作者 Yinzai He Baoqing Jia 《肿瘤学与转化医学:英文版》 2019年第3期109-113,共5页
Objective The aim of the study was to investigate the efficacy of immunocytochemistry and related gene detection using cell block for the diagnosis and individualized treatment of advanced lung cancer.Methods Sixty-fi... Objective The aim of the study was to investigate the efficacy of immunocytochemistry and related gene detection using cell block for the diagnosis and individualized treatment of advanced lung cancer.Methods Sixty-five malignant pleural effusion specimens were collected to make cell blocks, which were used for hematoxylin and eosin(H&E) staining, immunocytochemical studies, and gene sequencing of the tumors to guide the individualized diagnoses and treatment of the given tumors. Results The tumor cells in the cell block sections were abundant in number with high quality cellular structures, and the histological morphological characteristics were partially maintained. Immunocytochemical staining was helpful in identifying the cell origin and tumor classification, and amplification refractory mutation system(ARMS) was used to determine the mutation status of epidermal growth factor receptor(EGFR). Of the 65 samples, 50 had a diagnosis of adenocarcinoma, 7 were pulmonary squamous cells, 6 were small cell carcinoma of the lung, and 2 were mesothelioma. The morphological features of the tumors were as follows: acinar formation, papillary and single cells for adenocarcinoma;intercellular bridges for squamous cell carcinoma;and morphology of the small cells is similar to that of the smear. Correlating with the results of immunocytochemical staining and clinical data analysis, 40 cases were confirmed as pulmonary adenocarcinoma, with an additional 4 cases of breast cancer, 3 cases of ovarian adenocarcinoma, and 3 cases of colorectal adenocarcinoma. Of the 47 non-small cell lung carcinoma(NSCLC) patients, EGFR mutations were detected in 26 cases(55.3%) by ARMS, with four mutation types: exon 19 deletion(13 cases, 50.0%), exon 2l point mutations L858R(11 cases, 42.3%) and L861Q(1 case, 3.8%), and exon 18 point mutation G719X(1 case, 3.8%). Conclusion Malignant pleural effusion cell blocks combined with immunocytochemical markers and molecular pathology are helpful for the diagnosis of advanced tumors, the identification o 展开更多
关键词 PLEURAL EFFUSION cell BLOCK IMMUNOCYTOCHEMISTRY EPIDERMAL growth factor receptor(EGFR)
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三磷酸腺苷二钠片对慢性高原病模型大鼠多器官损伤的改善作用 预览
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作者 杨涛 史超 +3 位作者 艾尼娃尔·艾克木 是文辉 张向阳 迪丽努尔·买买提依明 《西北药学杂志》 CAS 2019年第3期336-341,共6页
目的 探究三磷酸腺苷二钠片(ADT)对慢性高原病(CMS)模型大鼠重要器官的保护作用。方法 将60只大鼠随机分为对照组、模型组、硝苯地平组及三磷酸腺苷二钠片低、中和高剂量组。测定大鼠肺动脉压力(PAP)、血清中细胞因子内皮素-1(ET-1)、... 目的 探究三磷酸腺苷二钠片(ADT)对慢性高原病(CMS)模型大鼠重要器官的保护作用。方法 将60只大鼠随机分为对照组、模型组、硝苯地平组及三磷酸腺苷二钠片低、中和高剂量组。测定大鼠肺动脉压力(PAP)、血清中细胞因子内皮素-1(ET-1)、血管内皮生长因子(VEGF)和一氧化氮(NO)的含量,各组织中炎性因子超氧化物歧化酶(SOD)活性、丙二醛(MDA)水平和谷胱甘肽过氧化物酶(GSH-Px)活性及各组织病理学检查。结果 与对照组比较,模型组和硝苯地平组大鼠血清中NO含量减少,ET-1和VEGF含量增多;各组织中MDA水平升高,SOD和GSH-Px活性降低;PAP升高。提示低压低氧环境会对大鼠的多个重要器官造成不同程度的损伤。与模型组比较,三磷酸腺苷二钠片高和中剂量组大鼠血清中NO含量升高,ET-1和VEGF含量下降;各组织中MDA水平降低,SOD和GSH-Px活性升高;PAP降低。结论 三磷酸腺苷二钠片对CMS模型大鼠重要器官具有保护作用。 展开更多
关键词 三磷酸腺苷二钠片 肺动脉高压 细胞因子
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Differential expression of glial cell line-derived neurotrophic factor splice variants in the mouse brain 预览
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作者 Xiao-He Gu Heng Li +4 位作者 Lin Zhang Tao He Xiang Chai He Wei Dian-Shuai Gao 《中国神经再生研究:英文版》 SCIE CAS CSCD 2020年第2期270-276,共7页
Glial cell line-derived neurotrophic factor(GDNF) plays a critical role in neuronal survival and function. GDNF has two major splice variants in the brain,α-pro-GDNF and β-pro-GDNF, and both isoforms have strong neu... Glial cell line-derived neurotrophic factor(GDNF) plays a critical role in neuronal survival and function. GDNF has two major splice variants in the brain,α-pro-GDNF and β-pro-GDNF, and both isoforms have strong neuroprotective effects on dopamine neurons. However, the expression of the GDNF splice variants in dopaminergic neurons in the brain remains unclear. Therefore, in this study, we investigated the mRNA and protein expression of α-and β-pro-GDNF in the mouse brain by real-time quantitative polymerase chain reaction, using splice variant-specific primers, and western blot analysis. At the mRNA level,β-pro-GDNF expression was significantly greater than that of α-pro-GDNF in the mouse brain. In contrast, at the protein level,α-pro-GDNF expression was markedly greater than that of β-pro-GDNF. To clarify the mechanism underlying this inverse relationship in mRNA and protein expression levels of the GDNF splice variants, we analyzed the expression of sorting protein-related receptor with A-type repeats(SorLA) by real-time quantitative polymerase chain reaction. At the mRNA level, SorLA was positively associated with β-pro-GDNF expression, but not with α-pro-GDNF expression. This suggests that the differential expression of α-and β-pro-GDNF in the mouse brain is related to SorLA expression. As a sorting protein, SorLA could contribute to the inverse relationship among the mRNA and protein levels of the GDNF isoforms. This study was approved by the Animal Ethics Committee of Xuzhou Medical University, China on July 14, 2016. 展开更多
关键词 Δ78 locus BRAIN region dopaminergic neurons glial cell line-derived NEUROTROPHIC factor mouse BRAIN precursor protein α-pro-GDNF β-pro-GDNF sorting protein-related receptor with A-TYPE REPEATS splice variants
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微RNA与类风湿关节炎活动性相关研究
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作者 荀翠平 李鸿斌 《中华风湿病学杂志》 CAS CSCD 北大核心 2019年第6期409-413,共5页
目的了解RA患者中微RNA(miRNA)的表达情况及与临床表现、实验室检查、病情活动性、细胞因子水平以及治疗反应的相关性。方法选取2015年10月至12月就诊于内蒙古医科大学附属医院风湿免疫科的初诊RA患者38例,实时荧光定量PCR检测38例初诊R... 目的了解RA患者中微RNA(miRNA)的表达情况及与临床表现、实验室检查、病情活动性、细胞因子水平以及治疗反应的相关性。方法选取2015年10月至12月就诊于内蒙古医科大学附属医院风湿免疫科的初诊RA患者38例,实时荧光定量PCR检测38例初诊RA患者基线期、38名健康对照组及治疗后3个月RA患者PBMCs中miRNA表达量。计数资料采用χ2检验或Fisher确切概率法。计量资料采用独立样本t检验或配对t检验。Levene法检验方差齐性。结果①基线期RA患者组miR-125b(1.55±0.24),miR-155(3.1±0.5),miR-346(650±51),miR-223-3p(1.26±0.18),miR-146a-5p(2.39±0.25)表达高于健康对照组(0.84±0.16,1.4±0.5,304±101,0.58±0.11,1.09±0.27,t=15.36,18.60,18.77,19.67,21.66;P<0.05),miR-21-5p(0.91±0.09)表达低于健康对照组(1.52±0.21,t=-16.029,P<0.05),而miR-146a-3p,miR-21-3p,miR-223-5p表达在2组间差异并无统计学意义。② miRNA表达水平与RA临床表现、实验室检查、病情活动性和细胞因子包括IL-1β,IL-6,IL-17a,IL-23和TNF-α水平相关性进行相关性分析,发现miR-146a、miR-155的表达水平与RA病情活动度评分呈正相关(与DAS28、CDAS、SDAS评分的Pearson相关系数分别为0.877,0.877,0.877;0.817,0.817,0.817;P均<0.05);miR-21与RA病情活动度评分、炎性细胞因子呈负相关。③治疗后RA患者关节压痛、肿胀等临床症状、实验室指标及超声影像学检查均改善(P<0.05),RA患者miRNA的表达均减低(P<0.05),而miR-21表达则显著性增加(P<0.05)。结论MiR-125b,miR-21,miR-155,miR-346,miR-223,miR-146a在RA患者中差异化表达,且与病情活动和治疗反应相关,提示miRNA的检测可作为RA病情活动的判断指标,用于监测治疗效果。 展开更多
关键词 关节炎 类风湿 微RNAS 细胞因子
脱落乳牙牙髓干细胞与脐带间充质干细胞治疗大鼠脊髓损伤疗效比较 预览
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作者 刘露 张青 +3 位作者 翟启明 刘安琪 刘文佳 金钫 《实用口腔医学杂志》 CAS CSCD 北大核心 2019年第2期185-190,共6页
目的:比较脱落乳牙牙髓干细胞(SHEDs)、脐带间充质干细胞(UCMSCs)2种细胞聚合体治疗大鼠脊髓损伤的疗效。方法:制备SHEDs、UCMSCs细胞聚合体,比较其增殖能力、神经营养因子表达。取SD大鼠40只,其中8只去除T8-9椎体为假手术组(SHAM组);3... 目的:比较脱落乳牙牙髓干细胞(SHEDs)、脐带间充质干细胞(UCMSCs)2种细胞聚合体治疗大鼠脊髓损伤的疗效。方法:制备SHEDs、UCMSCs细胞聚合体,比较其增殖能力、神经营养因子表达。取SD大鼠40只,其中8只去除T8-9椎体为假手术组(SHAM组);32只建立大鼠脊髓全横断模型,随机分为阴性对照组(无治疗,SCI only组,n=8),SHEDs治疗组(n=12)和UCMSCs治疗组(n=12)。损伤后即刻治疗;每周用BBB评分法评定运动功能;8周后取损伤区脊髓做HE染色观察修复情况。结果:SHEDs与UCMSCs比较,增殖较快(P<0.05),BDNF、NGF、NTF3、GDNF表达较高(P<0.01),bFGF、CNTF表达较低(P<0.05)。BBB评分示SHEDs组高于UCMSCs组(P<0.05)UCMSCs组高于阴性对照组(P<0.05);HE示SHEDs组损伤面积更小且有再生脊髓样组织生成。结论:SHEDs聚合体可作为治疗大鼠脊髓损伤的新的有效疗法。 展开更多
关键词 脱落乳牙牙髓干细胞(SHEDs) 脐带间充质干细胞(UCMSCs) 细胞聚合体 脊髓损伤 神经生长因子 BBB评分
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眼眶血管畸形发病机制研究进展 预览
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作者 韩艳平 贾仁兵 范先群 《临床眼科杂志》 2019年第3期283-287,共5页
眼眶血管畸形在眼眶疾病中十分常见,对视力、眼球运动有较大影响,可引起多种并发症,发病率高、复发率高、治疗方法有限。眼眶血管畸形发生和进展涉及多方面因素,包括静脉本身的原因及管腔中血流动力学的作用,还受血栓形成、内出血、感... 眼眶血管畸形在眼眶疾病中十分常见,对视力、眼球运动有较大影响,可引起多种并发症,发病率高、复发率高、治疗方法有限。眼眶血管畸形发生和进展涉及多方面因素,包括静脉本身的原因及管腔中血流动力学的作用,还受血栓形成、内出血、感染等影响,基因突变或任何影响基因表达的因素如微环境因素变化等,都可能导致发育异常并使分化细胞表型异常。抗血管生成药物在治疗上有较好的应用前景;基因治疗等有助于从根本上抑制眼眶血管畸形的发生。 展开更多
关键词 眼眶血管畸形 发病机制 血管形成因子 基因突变 细胞因子 血液动力学
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Protective Effect of Bacillus subtilis Peptidoglycan (PG) on β-conglycinin-induced Intestinal Epithelial Cells Damage of Juvenile Carp (Cyprinus carpio) 预览
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作者 Zhang Tiantian Yin Haicheng Huang Wei 《动物与饲料科学:英文版》 CAS 2019年第2期56-61,共6页
[Objective] The paper was to investigate the protective effects of different concentrations of Bacillus subtilis peptidoglycan(PG) on β-conglycinin-induced inflammatory injury in intestinal epithelial cells of juveni... [Objective] The paper was to investigate the protective effects of different concentrations of Bacillus subtilis peptidoglycan(PG) on β-conglycinin-induced inflammatory injury in intestinal epithelial cells of juvenile carp(Cyprinus carpio).[Method] In 24-cell microplates, the intestinal epithelial cells(IECs) of juvenile carp were primarily cultured for 72 h at 26°C and 6% CO2, and then the IECs were randomly divided into6 groups with 4 replicates per group. One of the six groups was set as negative control group, and the other groups were all supplemented with 1.0 mg/mL β-conglycinin in culture medium to establish inflammatory injury. At 24 h post induction, the culture media were changed into B. subtilis PG culture media with the concentrations of 0(positive control group), 0.15, 0.30, 0.45 and 0.60 mg/mL, respectively. The samples were collected to measure the antioxidant and anti-inflammatory indices at 12, 24 and 36 h post culture.[Result]β-conglycinin exposure significantly decreased the activity of ASA, AHR, SOD, CAT, GPx, and increased the PC content and the mRNA expression of inflammatory cytokines(IL-1β, IL-8, TNF-α1,IL-10 and TGF-β). At 12, 24 and 36 h post PG treatment, the activities of ASA, AHR, SOD, CAT, GPx and the content of PC in cells decreased in a dose-dependent manner;the mRNA levels of IL-1β, IL-8 and TNF-α1 were down-regulated and those of IL-10 and TGF-β were up-regulated.[Conclusion] Different concentrations of B. subtilis PG could protect IECs oxidative damage induced by β-conglycinin and improve the antioxidant capacity of IECs. High concentration of PG could improve the anti-inflammatory ability of IECs by inhibiting inflammatory factors and promoting the gene expression of anti-inflammatory cytokines. 展开更多
关键词 CARP (Cyprinus carpio) Bacillus subtilis PG Β-CONGLYCININ Intestinal epithelial cell (IECs) Antioxidant Inflammatory factor
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微生物燃料电池处理重金属废水的研究进展 预览
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作者 张婧然 周璇 +2 位作者 王辉 朱丹丹 李先宁 《化工学报》 EI CAS CSCD 北大核心 2019年第6期2027-2035,共9页
基于已有研究基础,解析了在微生物燃料电池(microbial fuel cell,MFC)特有构型和产电条件下涉及的重金属去除机制,综述了装置构型、阴极类型、重金属浓度、外接电阻、pH、电子受体类型等因素对MFC产电性能及重金属去除效能的影响。从生... 基于已有研究基础,解析了在微生物燃料电池(microbial fuel cell,MFC)特有构型和产电条件下涉及的重金属去除机制,综述了装置构型、阴极类型、重金属浓度、外接电阻、pH、电子受体类型等因素对MFC产电性能及重金属去除效能的影响。从生物电化学作用、微生物作用、电子受体竞争机制等侧面,阐明各单一因素对重金属去除速率、还原产物的影响和作用。提出今后MFC去除重金属废水的研究需立足于实际废水,构建中试装置为实际应用提供数据支撑。进一步确定各影响因素的主次地位及作用方向,根据已有理论基础调控各影响因素,得到更快的去除速率和理想的还原产物。同时筛选适于重金属分离的电极材料及考察可实现产物回收的物理化学方法,以期实现重金属真正意义上的回收。 展开更多
关键词 燃料电池 废水 污染 重金属 影响因素
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Effect of rituximab combined with CVAD regimen on serum VEGF and β2-MG levels in patients with primary gastrointestinal B-cell lymphoma
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作者 Shi-Tong Zhang Ai-Min Wang +4 位作者 Zhi-Hui Sun Jing-Jing Song Xiao-Yu Xuan WeiLiu Xin-Chun Tian 《海南医科大学学报(英文版)》 2019年第12期20-23,共4页
Objective:To investigate the clinical effect of rituximab combined with CVAD regimen in patients with primary gastrointestinal B-cell lymphoma and serum vascular endothelial growth factor (VEGF) andβ2 microglobulin (... Objective:To investigate the clinical effect of rituximab combined with CVAD regimen in patients with primary gastrointestinal B-cell lymphoma and serum vascular endothelial growth factor (VEGF) andβ2 microglobulin (β2-MG) The impact of the level.Methods:Eighty-four patients with primary gastrointestinal B-cell lymphoma treated from May 2014 to December 2015 were enrolled. Based on the random number table, all the patients were divided into a control group (n=42) and an observation group (n=42). The control group was treated with CVAD. The observation group was treated with rituximab on the basis of the control group. The effect of the patients was evaluated after 3 courses of treatment. The patients were followed up for 3 years after treatment. US RECIST 1.1 was used to evaluate the short-term efficacy on the patients;VEGF, TNF receptor-associated factor 6 (TRAF6) and B-cell lymphoma factor-6 (Bcl-6) levels were measured by enzyme-linked immunosorbent assay;β2-MG level test was implemented to compare the short-term efficacy, biochemical indicators, incidence of toxic side effects and long-term survival rate of the two groups. Results: The short-term efficacy rate of the observation group was 76.19%, which was higher than that of the control group (50.00%) (P<0.05). The levels of VEGF, TRAF6, Bcl-6, andβ2-MG were lower in the observation group after 3 courses of treatment than that in the control group (P<0.05);there was no significant difference in the incidence of neutropenia, gastrointestinal reactions, sepsis, infection, infusion-related reactions and cardiovascular events between the observation group and the control group (P>0.05);The 1-year long-term survival rate after treatment was not statistically significant (P>0.05). The long-term survival rate of the observation group was higher than that of the control group at 2 and 3 years after treatment (P<0.05).Conclusion: The combination of rituximab and CVAD in patients with primary gastrointestinal B-cell lymphoma can improve short-term efficacy, lower 展开更多
关键词 RITUXIMAB CVAD REGIMEN PRIMARY GASTROINTESTINAL B-CELL lymphoma Short-term efficacy Vascular endothelial growth factor β 2 MICROGLOBULIN
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