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Mechanism of piR-1245/PIWI-like protein-2 regulating Janus kinase-2/signal transducer and activator of transcription-3/vascular endothelial growth factor signaling pathway in retinal neovascularization

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Neural Regeneration Research 2023年第5期18卷 1132-1138页

作者： Yong Yu Li-Kun Xia Yu Di qing-zhu nie Xiao-Long Chen Department of Ophthalmology Shengjing Hospital of China Medical UniversityShenyangLiaoning ProvinceChina

Inhibiting retinal neovascularization is the optimal strategy for the treatment of retina-related diseases, but there is currently no effective treatment for retinal neovascularization. P-element-induced wimpy testis(PIWI)-interacting RNA(piRNA) is a type of small non-coding RNA implicated in a variety of diseases. In this study, we found that the expression of piR-1245 and the interacting protein PIWIL2 were remarkably increased in human retinal endothelial cells cultured in a hypoxic environment, and cell apoptosis, migration, tube formation and proliferation were remarkably enhanced in these cells. Knocking down piR-1245 inhibited the above phenomena. After intervention by a p-JAK2 activator, piR-1245 decreased the expression of hypoxia inducible factor-1α and vascular endothelial growth factor through the JAK2/STAT3 pathway. For in vivo analysis, 7-day-old newborn mice were raised in 75 ± 2% hyperoxia for 5 days and then piR-1245 in the retina was knocked down. In these mice, the number of newly formed vessels in the retina was decreased, the expressions of inflammationrelated proteins were reduced, the number of apoptotic cells in the retina was decreased, the JAK2/STAT3 pathway was inhibited, and the expressions of hypoxia inducible factor-1α and vascular endothelial growth factor were decreased. Injection of the JAK2 inhibitor JAK2/TYK2-IN-1 into the vitreous cavity inhibited retinal neovascularization in mice and reduced expression of hypoxia inducible factor-1α and vascular endothelial growth factor. These findings suggest that piR-1245 activates the JAK2/STAT3 pathway, regulates the expression of hypoxia inducible factor-1α and vascular endothelial growth factor, and promotes retinal neovascularization. Therefore, piR-1245 may be a new therapeutic target for retinal neovascularization.

关键词： angiogenesis human retinal endothelial cells hypoxia inducible factor-1α hypoxia interleukin-1β migration non-coding RNA oxygen-induced injury PIWI-interacting RNA retinopathy

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Maternally expressed gene 3 regulates retinal neovascularization in retinopathy of prematurity

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Neural Regeneration Research 2022年第6期17卷 1364-1368页

作者： Yu Di Yue Wang Yue-Xia Wang Xue Wang Yuan Ma qing-zhu nie Department of Ophthalmology Shengjing Hospital of China Medical UniversityShenyangLiaoning ProvinceChina

The mouse model of oxygen induced retinopathy is suitable for the study of various retinal neovascularization diseases,including retinopathy of *** maternally expressed gene 3(MEG3)has been demonstrated to have an inhibitory effect on diabetic *** this study,we investigated the role of MEG3 overexpression in oxygen-induced retinopathy in *** results showed that MEG3 overexpression effectively inhibited the production of retinal neovascularization in oxygen-induced retinopathy *** acts by down-regulating the expression of phosphoinositide 3-kinase,serine/threonine kinase,and vascular endothelial growth factor and pro-inflammatory ***3 overexpression lentivirus has a future as a new method for the clinical treatment of retinopathy of *** animal experiments were approved by the Animal Ethics Committee of Shengjing Hospital of China Medical University,China(approval No.2016PS074K)on February 25,2016.

关键词： long noncoding RNA maternally expressed gene 3 neurodevelopment oxygen-induced retinopathy phos

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Effects of long non-coding RNA myocardial infarction-associated transcript on retinal neovascularization in a newborn mouse model of oxygen-induced retinopathy

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Neural Regeneration Research 2021年第9期16卷 1877-1881页

作者： Yu Di Yue Wang Xue Wang qing-zhu nie Department of Ophthalmology Shengjing Hospital of China Medical UniversityShenyangLiaoning ProvinceChina

Whether long non-coding RNA myocardial infarction-associated transcript is involved in oxygen-induced retinopathy remains poorly understood. To validate this hypothesis, we established a newborn mouse model of oxygen-induced retinopathy by feeding in an oxygen concentration of 75 ± 2% from postnatal day 8 to postnatal day 12, followed by in normal air. On postnatal day 11, the mice were injected with the myocardial infarction-associated transcript siRNA plasmid via the vitreous cavity to knockdown long non-coding RNA myocardial infarction-associated transcript. Myocardial infarction-associated transcript siRNA transcription significantly inhibited myocardial infarctionassociated transcript mRNA expression, reduced the phosphatidylinosital-3-kinase, phosphorylated Akt and vascular endothelial growth factor immunopositivities, protein and mRNA expression, and alleviated the pathological damage to the retina of oxygen-induced retinopathy mouse models. These findings suggest that myocardial infarction-associated transcript is likely involved in the retinal neovascularization in retinopathy of prematurity and that inhibition of myocardial infarction-associated transcript can downregulate phosphatidylinosital-3-kinase, phosphorylated Akt and vascular endothelial growth factor expression levels and inhibit neovascularization. This study was approved by the Animal Ethics Committee of Shengjing Hospital of China Medical University, China(approval No. 2016 PS074 K) on February 25, 2016.

关键词： long non-coding RNA myocardial infarction-associated transcript neovascularization neurovascular prematurity retinopathy vascular development vascular endothelial growth factor

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Matrix metalloproteinase-9 and vascular endothelial growth factor expression change in experimental retinal neovascularization

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International Journal of Ophthalmology(English edition) 2016年第6期9卷 804-808页

作者： Yu Di qing-zhu nie Xiao-Long Chen Department of Ophthalmology Shengjing Hospital of China Medical University

AIM： To investigate the signal transduction mechanism of matrix metalloproteinase-9 （MMP-9） mediatedvascular endothelial growth factor （VEGF） expression and retinal neovascularization （RNV） in oxygen-induced retinopathy （OIR） model. METHODS： C57BL/6J mice were divided into four groups： control group, OIR group, OIR control group （phosphatebuffered saline by intravitreal injection） and treated group [tissue inhibitor of matrix metalloproteinase-1 （TIMP-1） by intravitreal injection]. OIR model was established in C57BIJ6J mice exposed to 75% ＋2% oxygen for 5d. mRNA level and protein expression of MMP-9, TIMP-1 and VEGF were measured by real-time polymerase chain reaction and Western blotting, and located by immunohistochemistry. RESULTS： Levels of MMP-9 and VEGF in retina were significantly increased in animals with OIR and OIR control group. Levels of TIMP -1 in retina was significantly reduced in animals with OIR and OIR control group. Furthermore, a significant correlation was found between MMP-9 and VEGF. Intravitreal injection of TIMP- 1 significantly reduced MMP-9 and VEGF expression of the OIR mouse model （all P〈0.05）. CONCLUSION： These results demonstrate that MMP- 9-mediated up-regulation of VEGF promotes RNV in retinopathy of prematurity （ROP）. TIMP-1 may be a potential target for the prevention and treatment of ROP.

关键词： retinal neovascularization matrixmetalloproteinase-9 vascular endothelial growth factor oxygen-induced retinopathy

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Discontinuity development patterns and the challenges for 3D discrete fracture network modeling on complicated exposed rock surfaces

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Journal of Rock Mechanics and Geotechnical Engineering 2024年第6期16卷 2154-2171页

作者： Wen Zhang Ming Wei Ying Zhang Tengyue Li qing Wang Chen Cao Chun zhu Zhengwei Li Zhenbang nie Shuonan Wang Han Yin College of Construction Engineering Jilin UniversityChangchun130026China Liaoning Nonferrous Geological Exploration and Research Institute Co. Shenyang110013China School of Earth Sciences and Engineering Hohai UniversityNanjing210098China Northeastern University Shenyang110819China

Natural slopes usually display complicated exposed rock surfaces that are characterized by complex and substantial terrain undulation and ubiquitous undesirable phenomena such as vegetation cover and *** study presents a systematic outcrop research of fracture pattern variations in a complicated rock slope,and the qualitative and quantitative study of the complex phenomena impact on threedimensional(3D)discrete fracture network(DFN)*** the studies of the outcrop fracture pattern have been so far focused on local variations,thus,we put forward a statistical analysis of global *** entire outcrop is partitioned into several subzones,and the subzone-scale variability of fracture geometric properties is analyzed(including the orientation,the density,and the trace length).The results reveal significant variations in fracture characteristics(such as the concentrative degree,the average orientation,the density,and the trace length)among different ***,the density of fracture sets,which is approximately parallel to the slope surface,exhibits a notably higher value compared to other fracture sets across all *** improve the accuracy of the DFN modeling,the effects of three common phenomena resulting from vegetation and rockfalls are qualitatively analyzed and the corresponding quantitative data processing solutions are ***,the 3D fracture geometric parameters are determined for different areas of the high-steep rock slope in terms of the subzone *** results show significant variations in the same set of 3D fracture parameters across different regions with density differing by up to tenfold and mean trace length exhibiting differences of 3e4 *** study results present precise geological structural information,improve modeling accuracy,and provide practical solutions for addressing complex outcrop issues.

关键词： Complicated exposed rock surfaces Discontinuity characteristic variation Three-dimensional discrete fracture network modeling Outcrop study Vegetation cover and rockfalls

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Escape probability for isotropic emitters near Kerr black hole with astrometric

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Communications in Theoretical Physics 2024年第5期76卷 128-133页

作者： Yu-Xuan Han qing-Hua zhu qing-Guo Huang CAS Key Laboratory of Theoretical Physics Institute of Theoretical PhysicsChinese Academy of SciencesBeijing 100190China School of Physical Sciences University of Chinese Academy of SciencesNo.19A Yuquan RoadBeijing 100049China Department of Physics Chongqing UniversityChongqing 401331China School of Fundamental Physics and Mathematical Sciences Hangzhou Institute for Advanced Study UCASHangzhou 310024China

The paper investigates the escape probability for isotropic emitters near a Kerr black *** propose a new approach to obtain the escape probability in a general manner,going beyond previous case-by-case *** approach is based on studies of the black hole shadow with astrometric observable and can be applied to emitters with an arbitrary 4-velocities and locations,even to the emitters outside of the equatorial *** also consider representative examples illustrating how escape probabilities vary with distance,velocity,and inclination ***,this new approach provides an effective method for studying escape probabilities near Kerr black holes.

关键词： Kerr black hole photon escape probability isotropic emitters

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Advancements in S-scheme heterojunction materials for photocatalytic environmental remediation

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Journal of Materials Science & Technology 2024年第2期169卷 182-198页

作者： Changliang nie Xiaohan Wang Ping Lu Yukun zhu Xin Li Hua Tang School of Environmental Science and Engineering State Key Laboratory of Bio-fibers and Eco-textilesQingdao UniversityQingdao266071China Institute of Biomass Engineering Key Laboratory of Energy Plants Resource and UtilizationMinistry of Agriculture and Rural AffairsSouth China Agricultural UniversityGuangzhou510642China School of Environmental Science and Engineering Shandong UniversityQingdao266237China

Recently,S-scheme heterojunctions have gained considerable attention in the field of photocatalytic environmental remediation as their potential to achieve efficient spatial charge separation coupled with strong redox ***,this review provides an overview of the current state-of-the-art in the development of S-scheme-based photocatalysts for the purification of environmental *** review first covers the fundamentals of heterogeneous photocatalysis for environmental ***,an introduction to the background,mechanism,design principles,and characterization techniques of S-scheme heterojunctions is ***,the review presents a comparison and summary of using various S-scheme photocatalysts for the removal of several target pollutants,such as bacteria,heavy metals,nitrogen oxides,antibiotics,and ***,the modification strategies of S-scheme heterojunction photocatalysts are also ***,a brief discussion of the challenges and prospects associated with S-scheme photocatalytic systems is demonstrated.

关键词： S-scheme heterojunctions Photocatalyst Pollutant Environmental remediation

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An Image Fingerprint and Attention Mechanism Based Load Estimation Algorithm for Electric Power System

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Computer Modeling in Engineering & Sciences 2024年第7期140卷 577-591页

作者： qing zhu Linlin Gu Huijie Lin Electricity Technology Branch Nari Technology Co.Ltd.Nanjing211106China NARI-TECH Nanjing Control Systems Co. Ltd.Nanjing211106China

With the rapid development of electric power systems,load estimation plays an important role in system operation and ***,load estimation techniques contain traditional,time series,regression analysis-based,and machine learning-based *** the machine learning-based method can lead to better performance,in this paper,a deep learning-based load estimation algorithm using image fingerprint and attention mechanism is ***,an image fingerprint construction is proposed for training *** the data preprocessing,the training data matrix is constructed by the cyclic shift and cubic spline ***,the linear mapping and the gray-color transformation method are proposed to form the color image ***,a convolutional neural network(CNN)combined with an attentionmechanism is proposed for training performance *** last,an experiment is carried out to evaluate the estimation *** with the support vector machine method,CNN method and long short-term memory method,the proposed algorithm has the best load estimation performance.

关键词： Load estimation deep learning attention mechanism image fingerprint construction

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Expression of Nogo-A on the retina in rat model with chronic ocular hypertension

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International Journal of Ophthalmology(English edition) 2010年第2期3卷 112-113页

作者： qing-zhu nie, Dian-Wen Gao Department of Ophthalmology Shengjing Hospital Affiliated to China Medical University Shenyang 110004 Liaoning Province China Heilongjiang Eye Hospital Harbin 150001 Heilongjiang Province China

AIMTo study the expressive variation of Nogo-A on rat retina in the process of chronic ocular hypertension.

关键词： retina chronic hypertension Nogo-A retinal ganglion cell

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Clinical effect of improved viscocanalostomy for the treatment of primary congenital glaucoma

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International Journal of Ophthalmology(English edition) 2012年第4期5卷 466-468页

作者： Yong Yu Zhi-Li Liu Lei Cao and qing-zhu nie Department of Ophthalmology Shengjing Hospital China Medical University Shenyang 110004 Liaoning Province China

AIM: To evaluate the clinical effect of improved viscocanalostomy in patients with primary congenital glaucoma. METHODS: Retrospective analysis of improved viscocanalostomy was performed on 51 eyes of 42 patients with primary congenital glaucoma. The outcome evaluation included postoperative intraocular pressure (IOP), corneal diameter, cup/disc ratio and complications. All patients were followed up at week 1, month 1, 3, 6 and 12. RESULTS: The results revealed that postoperative IOP was decreased from (38.57 +/- 13.61)mmHg to (10.53 +/- 3.91)mmHg. (14.89 +/- 5.26)mmHg,(15.42 +/- 5.11)mmHg, (13.82 +/- 3.46)mmHg, (13.16 +/- 5.29)mmHg at follow-up time of 1 week,1, 3, 6, 12 months (P<0.001). The postoperative corneal diameter was decreased significantly (P=0.002); The mean cup/dish ratio wasn't significantly different (P=0.148) before and after the surgery, the cup/dish ratio of successful surgery was evidently decreased (preoperative 0.7 +/- 0.2, postoperative 0.6 +/- 0.3, P = 0.007), but the complications like unformed anterior chamber were not observed. The mean follow-up period was 12 months. CONCUJSION: Improved viscocanalostomy improves the clinical effects of the patients with primary congenital glaucoma, such as higher success rates, lower postoperative mean IOP and fewer complications.

关键词： primary congenital glaucoma improved viscocanalostomy intraocular pressure

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