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Influence of different magnetic forces on the effect of colonic anastomosis in rats

World Journal of Gastrointestinal Surgery 2024年第3期16卷 860-870页

作者： Bo-Yan Tian Miao-Miao Zhang Jia Ma Yi Lyu xiao-Peng Yan Department of Hepatobiliary Surgery The First Affiliated Hospital of Xi'an Jiaotong UniversityXi'an 710061Shaanxi ProvinceChina National Local Joint Engineering Research Center for Precision Surgery&Regenerative Medicine The First Affiliated Hospital of Xi'an Jiaotong UniversityXi'an 710061Shaanxi ProvinceChina Department of Surgical Oncology Shaanxi Provincial People's HospitalXi'an 710068Shaanxi ProvinceChina

BACKGROUND Despite much work having been conducted on magnetic compression anastomo-sis(MCA)in the digestive tract,there are no reports on the influence of magnetic force on the *** To investigate the effect of different magnetic force magnets on the MCA of the digestive *** Two groups of magnets of the same sizes but different magnetic forces were designed and produced.A total of 24 Sprague-Dawley rats were randomly assigned into two groups(powerful magnet group and common magnet group),with 12 rats in each *** types of magnets were used to complete the colonic side-to-side anastomosis of the *** operation time and magnet discharge time were *** anastomotic specimens were obtained 4 wk after the operation and then the burst pressure and diameter of the anastomosis were measured,and the anastomosis was observed via the naked eye and subjected to histological *** The magnetic forces of the powerful and common magnet groups at zero distance were 8.26 N and 4.10 N,*** colonic side-to-side anastomosis was completed in all 24 rats,and the operation success rate and postoperative survival rate were 100%.No significant difference was noted in the operation time between the two *** magnet discharge time of the powerful magnet group was slightly longer than that of the common magnet group,but the difference was not statistically significant(P=0.513).Furthermore,there was no statistical difference in the burst pressure(P=0.266)or diameter of magnetic anastomosis(P=0.095)between the two *** gross specimens of the two groups showed good anastomotic healing,and histological observation indicated good mucosal continuity without differences on *** In the rat colonic side-to-side MCA model,both the powerful magnet with 8.26 N and the common magnet with 4.10 N showed no significant impact on the anastomosis establishment process or its effect.

关键词： Magnetosurgery Magnetic compression anastomosis Colonic anastomosis Magnetic force Rats

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Bone morphogenetic protein-6 suppresses TGF-β_(2)-induced epithelial-mesenchymal transition in retinal pigment epithelium

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International Journal of Ophthalmology(English edition) 2024年第4期17卷 646-652页

作者： Xuan Liu Ming Liu Meng Ji Bo Ma Yu-Cen Hou xin-Yue Yao Qiao-Chu Cheng Li Chen Department of Ophthalmology the First Affiliated Hospital of Xi’an Jiaotong UniversityXi’an 710061Shaanxi ProvinceChina Department of Ophthalmology Xi’an No.1 HospitalXi’an 710000Shaanxi ProvinceChina Shaanxi Institute of Ophthalmology Xi’an 710000Shaanxi ProvinceChina Department of Ophthalmology Ankang Hospital of Traditional Chinese MedicineAnkang 725000Shaanxi ProvinceChina

AIM:To evaluate the effect of bone morphogenetic protein-6(BMP-6)on transforming growth factor(TGF)-β_(2)-induced epithelial-mesenchymal transition(EMT)in retinal pigment epithelium(RPE).METHODS:Adult retinal pigment epithelial cell line(ARPE-19)were randomly divided into control,TGF-β_(2)(5μg/L),and BMP-6 small interfering RNA(siRNA)*** cell morphology was observed by microscopy,and the cell migration ability were detected by Transwell *** EMT-related indexes and BMP-6 protein levels were detected by Western ***,a BMP-6 overexpression plasmid was constructed and RPE cells were divided into the control group,TGF-β_(2)+empty plasmid group,BMP-6 overexpression group,and TGF-β_(2)+BMP-6 overexpression *** EMT-related indexes and extracellular regulated protein kinases(ERK)protein levels were ***:Compared with the control group,the migration of RPE cells in the TGF-β_(2) group was significantly ***-β_(2) increased the protein expression levels ofα-smooth muscle actin(α-SMA),fibronectin and vimentin but significantly decreased the protein levels of E-cadherin and BMP-6(P<0.05)in ***,the migration of RPE cells in the BMP-6 siRNA group was also significantly ***-6 siRNA increased the protein expression levels ofα-SMA,fibronectin and vimentin but significantly decreased the protein expression levels of E-cadherin(P<0.05).Overexpression of BMP-6 inhibited the migration of RPE cells induced by TGF-β_(2) and prevented TGF-β_(2) from affecting EMT-related biomarkers(P<0.05).CONCLUSION:BMP-6 prevents the EMT in RPE cells induced by TGF-β_(2),which may provide a theoretical basis for the prevention and treatment of proliferative vitreoretinopathy.

关键词： bone morphogenetic protein-6 epithelialmesenchymal transition transforming growth factor-β_(2) retinal pigment epithelial cells cell migration

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Tough Polymeric Hydrogels Based on Amino Acid Derivative Mediated Dynamic Metal Coordination Bonds

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Chinese Journal of Polymer Science 2024年第10期42卷 1578-1588,I0014页

作者： Meng Li Meng-Yuan Zhang Wu-Xuan Lei Zhu-Ting Lv Qing-Hua Shang Zheng Zhao Jiang-Tao Li Yi-Long Cheng Engineering Research Center of Energy Storage Materials and Devices Ministry of EducationSchool of ChemistryXi’an Jiaotong UniversityXi’an710049China Polymer Materials&Engineering Department School of Materials Science&Engineering Chang’an UniversityXi’an710064China School of Electrical Engineering Xi’an Jiaotong UniversityXi’an710049China Department of Nuclear Medicine the First Affiliated Hospital of ChinaXi’an Jiaotong UniversityXi’an710049China

Abstract The development of physically crosslinked hydrogels with excellent mechanical and sensing properties is of importance for expanding the practical applications of intelligent soft hydrogel ***,after copolymerization of hydroxyl-containing amino acid derivative N-acryloyl serine(ASer)with acrylamide(AM),we introduce Zr4+through an immersion strategy to construct metal ion-toughened non-covalent crosslinked hydrogels(with tensile strength of up to 5.73 MPa).It is found that the synergistic coordination of hydroxyl and carboxyl groups with Zr^(4+)substantially increases the crosslinking density of the hydrogels,thereby imparting markedly superior mechanical properties compared to hydroxyl-free Zr^(4+)-crosslinked hydrogels,such as N-acryloyl alanine(AAla)copolymerized with AM hydrogels(with tensile strength of 2.98 MPa)Through the adjustment of the composition of the copolymer and the density of coordination bonds,the mechanical properties of the hydrogels can be modulated over a wide ***,due to the introduction of metal ions and the dynamic nature of coordination bonds,the hydrogels also exhibit excellent sensing performance and good self-recovery properties,paving the way for the development of flexible electronic substrates with outstanding comprehensive performances.

关键词： Hydrogel Amino acid Metal coordination Mechanical performance Flexible sensor

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Magnetic compression anastomosis to restore biliary tract continuity after obstruction following major abdominal trauma:A case report

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World Journal of Gastrointestinal Surgery 2024年第6期16卷 1933-1938页

作者： Miao-Miao Zhang Jie Tao Huan-Chen Sha Yun Li xiao-Gang Song Oliver J Muensterer Fang-Fang Dong Li Zhang Yi Lyu xiao-Peng Yan Department of Hepatobiliary Surgery The First Affiliated Hospital of Xi'an Jiaotong UniversityXi'an 710061Shaanxi ProvinceChina Shaanxi Provincial Key Laboratory of Magnetic Medicine The First Affiliated Hospital of Xi'an Jiaotong UniversityXi'an 710061Shaanxi ProvinceChina National Local Joint Engineering Research Center for Precision Surgery&Regenerative Medicine The First Affiliated Hospital of Xi'an Jiaotong UniversityXi'an 710061Shaanxi ProvinceChina Department of Pediatric Surgery Dr.von Hauner Children’s HospitalLudwig-Maximilians-University Medical CenterMunich 80337Germany

BACKGROUND The combination of magnetic compression anastomosis(MCA)and endoscopy has been used to treat biliary stricture after liver ***,its use for the treatment of complex biliary obstruction after major abdominal trauma has not been *** case report describes the successful use of MCA for the treatment of biliary obstruction resulting from major abdominal trauma.A 23-year-old man underwent major abdominal surgery(repair of liver rupture,right half colon resection,and ileostomy)following a car accident one year *** abdominal drainage tube,positioned at the Winslow foramen,was draining approximately 600-800 mL of bile per *** the two endoscopic retrograde cholangiopancreatography procedures,the guide wire was unable to enter the common bile duct,which prevented placement of a biliary *** combined with endoscopy was used to successfully achieve magnetic anastomosis of the peritoneal sinus tract and duodenum,and then a choledochoduodenal stent was ***,the external biliary drainage tube was *** patient achieved internal biliary drainage leading to the removal of the external biliary drainage tube,which improved the quality of *** Magnetic compression technique can be used for the treatment of complex biliary obstruction with minimal operative trauma.

关键词： Magnetic compression anastomosis Magnetosurgery Endoscopy Magnetic Surgery Clinic Biliary obstruction Case report

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Milk fat globule epidermal growth factor 8 alleviates liver injury in severe acute pancreatitis by restoring autophagy flux and inhibiting ferroptosis in hepatocytes

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World Journal of Gastroenterology 2024年第7期30卷 728-741页

作者： Qing Cui Hang-Cheng Liu Wu-Ming Liu Feng Ma Yi Lv Jian-Cang Ma Rong-Qian Wu Yi-Fan Ren Department of Cardiology Xi’an Central Hospital Affiliated to Xi’an Jiaotong UniversityXi’an 710003Shaanxi ProvinceChina Department of General Surgery The Second Affiliated Hospital of Xi’an Jiaotong UniversityXi’an 710004Shaanxi ProvinceChina National Local Joint Engineering Research Center for Precision Surgery&Regenerative Medicine Shaanxi Provincial Center for Regenerative Medicine and Surgical EngineeringFirst Affiliated Hospital of Xi’an Jiaotong UniversityXi’an 710061Shaanxi ProvinceChina Department of Vascular Surgery The Second Affiliated Hospital of Xi’an Jiaotong UniversityXi’an 710004Shaanxi ProvinceChina

BACKGROUND Liver injury is common in severe acute pancreatitis(SAP).Excessive autophagy often leads to an imbalance of homeostasis in hepatocytes,which induces lipid peroxidation and mitochondrial iron deposition and ultimately leads to *** previous study found that milk fat globule epidermal growth factor 8(MFG-E8)alleviates acinar cell damage during SAP via binding toαvβ3/5 ***-E8 also seems to mitigate pancreatic fibrosis via inhibiting chaperone-mediated *** To speculate whether MFG-E8 could also alleviate SAP induced liver injury by restoring the abnormal autophagy *** SAP was induced in mice by 2 hly intraperitoneal injections of 4.0 g/kg L-arginine or 7 hly injections of 50μg/kg cerulein plus ***8-knockout mice were used to study the effect of MFG-E8 deficiency on SAPinduced liver ***,a specificαvβ3/5 integrin inhibitor,was used to investigate the possible mechanism of *** The results showed that MFG-E8 deficiency aggravated SAP-induced liver injury in mice,enhanced autophagy flux in hepatocyte,and worsened the degree of *** MFG-E8 reduced SAP-induced liver injury in a dose-dependent ***,MFG-E8 mitigated excessive autophagy and inhibited ferroptosis in liver *** abolished MFG-E8’s beneficial effects in SAP-induced liver *** MFG-E8 acts as an endogenous protective mediator in SAP-induced liver ***-E8 alleviates the excessive autophagy and inhibits ferroptosis in hepatocytes by binding to integrinαVβ3/5.

关键词： Autophagy flux Ferroptosis Liver injury Milk fat globule epidermal growth factor 8 αvβ3/5 integrins Acute pancreatitis

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Eco-friendly polysaccharide coatings for antifouling and dragreduction and potential application for marine devices

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Friction 2024年第4期12卷 726-744页

作者： Hao YANG Liguo QIN Wenhui ZHAO Fagla Jules MAWIGNON Hui GUO Yongkang WU Yali ZHANG Guangneng DONG Key Laboratory of Education Ministry for Modern Design and Rotor-Bearing System Institute of Design Science and Basic ComponentsSchool of Mechanical EngineeringXi’an Jiaotong UniversityXi’an 710049China Key Laboratory of Biomedical Information of Ministry of Education School of Life Science and TechnologyXi’an Jiaotong UniversityXi’an 710049China Department of Endocrinology First Affiliated Hospital of Medical CollegeXi'an Jiaotong UniversityXi’an 710061China

Traditional antifouling agents usually have a certain toxic effect on marine environments and non-target *** this study,Dictyophora indusiata polysaccharide(DIP)was applied as a natural antifouling surface modifier to prepare the surface coating for marine *** DIP coatings were prepared:*** spore polysaccharide(DISP),*** volva polysaccharide(DIVP),and *** embryonic body polysaccharide(DIEP).The antifouling,tribological,and anticorrosion behavior of the coatings were *** revealed that the three kinds of DIP coatings had excellent antifouling properties,which could effectively prevent the adhesion of Chlorella and the attachment of water-based and oily stains on the ***,the coatings showed great mechanical stability and could maintain an extremely low coefficient of friction(COF<0.05)after continuous *** drag reduction rate of the coated surfaces reached 5%,showing a powerful lubrication ***,the DIP coatings presented an outstanding corrosion resistance,where the equivalent circuit impedances were 4-9 orders of magnitude higher than the control *** research showed a promising prospect of surface coating fabrication with DIP for marine devices to achieve the purpose of antifouling and drag reduction.

关键词： Dictyophora indusiata polysaccharide(DIP)coating antifouling anticorrosion lubrication and drag reduction

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Enhancing the Photosensitivity of Hypocrellin A by Perylene Diimide Metallacage‑Based Host–Guest Complexation for Photodynamic Therapy

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Nano-Micro Letters 2024年第11期16卷 71-87页

作者： Rongrong Li Tianfeng Yang xiuhong Peng Qian Feng Yali Hou Jiao Zhu Dake Chu xianglong Duan Yanming Zhang Mingming Zhang State Key Laboratory for Mechanical Behavior of Materials Shaanxi International Research Center for Soft MatterSchool of Materials Science and EngineeringXi’an Jiaotong UniversityXi’an 710049People’s Republic of China School of Pharmacy Health Science CenterXi’an Jiaotong UniversityXi’an 710061People’s Republic of China Department of Rehabilitation Medicine Shaanxi Provincial People’s HospitalXi’an 710068ShaanxiPeople’s Republic of China Department of Gastroenterology The First Affiliated Hospital of Xi’an Jiaotong UniversityXi’an 710061People’s Republic of China

The development of supramolecular hosts which can efficiently encapsulate photosensitizers to improve the photodynamic efficacy holds great promise for cancer ***,we report two perylene diimide-based metallacages that can form stable host–guest complexes with planar conjugated molecules including polycyclic aromatic hydrocarbons and photosensitizers(hypocrellin A).Such host–guest complexation not only prevents the aggregation of photosensitizers in aqueous environments,but also offers fluorescence resonance energy transfer(FRET)from the metallacage to the photosensitizers to further improve the singlet oxygen generation(Φ_(Δ)=0.66).The complexes are further assembled with amphiphilic polymers,forming nanoparticles with improved stability for anticancer *** in vitro and in vivo studies indicate that the nanoparticles display excellent anticancer activities upon light irradiation,showing great potential for cancer photodynamic *** study provides a straightforward and effective approach for enhancing the photosensitivity of conventional photosensitizers via host–guest complexation-based FRET,which will open a new avenue for host–guest chemistry-based supramolecular theranostics.

关键词： Metallacages Host-guest interactions Fluorescence resonance energy transfer Singlet oxygen Photodynamic therapy

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Comparison of inebilizumab or rituximab in addition to glucocorticoid therapy for neuromyelitis optica spectrum disorders

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International Journal of Ophthalmology(English edition) 2024年第6期17卷 1073-1078页

作者： Chu-Yuan Lou Yong Wang Jia-Yuan xing Teng Ma Lei Tao xiao-Tang Wang Run-Sheng Wang Neuroophthalmic Center Xi’an People’s Hospital(Xi’an Fourth Hospital)Xi’an 710004Shaanxi ProvinceChina

AIM:To investigate the short-term efficacy and safety of inebilizumab for neuromyelitis optica spectrum disorders(NMOSD).METHODS:A total of 33 patients with NMOSD treated with inebilizumab(Group INB,n=15)or rituximab(Group RTX,n=18)in addition to high-dose glucocorticoids were *** groups underwent hormone shock therapy during the acute ***,Group INB received inebilizumab injections during the remission phase,while Group RTX received rituximab injections.A comparison of aquaporins 4(AQP4)titer values,peripheral blood B lymphocyte counts,and visual function recovery was conducted before and 8wk after ***,adverse reactions and patient tolerability were analyzed after using inebilizumab treatment ***:Following inebilizumab treatment,there was a significantly improvement in the visual acuity of NMOSD patients(Pximab,which has previously demonstrated substantial therapeutic efficacy(P>0.05).Furthermore,inebilizumab exhibited higher safety levels than that of rituximab ***:The combination of inebilizumab and high-dose glucocorticoids proves to be *** comparison to rituximab injections,inebilizumab displays better tolerance and ***,it demonstrates a partial effect in preventing optic nerve ***,it stands as an effective method to reduce the disability rates and improve the daily living ability of patients with NMOSD.

关键词： neuromyelitis optica spectrum disorders inebilizumab rituximab glucocorticoids

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Mesenchymal stem cells-extracellular vesicles alleviate pulmonary fibrosis by regulating immunomodulators

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World Journal of Stem Cells 2024年第6期16卷 670-689页

作者： Ying Gao Mei-Fang Liu Yang Li xi Liu Yu-Jie Cao Qian-Fa Long Jun Yu Jian-Ying Li Department of Respiratory and Critical Care Medicine Shaanxi Provincial Rehabilitation HospitalXi’an 710000Shaanxi ProvinceChina Department of Respiratory and Critical Care Medicine Second Affiliated Hospital of Ningxia Medical University(The First People’s Hospital of Yinchuan)Yinchuan 750001Ningxia Hui Autonomous RegionChina School of Clinical Medicine Xi’an Medical UniversityXi’an 710021Shaanxi ProvinceChina Department of Respiratory and Critical Care Medicine Xi’an Central HospitalXi’an 710000Shaanxi ProvinceChina Department of Neurosurgery Xi’an Central HospitalXi’an 710000Shaanxi ProvinceChina Department of Emergency Xi’an Central HospitalXi’an 710000Shaanxi ProvinceChina

BACKGROUND Pulmonary fibrosis(PF)is a chronic interstitial lung disease characterized by fibroblast proliferation and extracellular matrix formation,causing structural damage and lung *** cell therapy and mesenchymal stem cells-extracellular vesicles(MSC-EVs)offer new hope for PF *** To investigate the therapeutic potential of MSC-EVs in alleviating fibrosis,oxidative stress,and immune inflammation in A549 cells and bleomycin(BLM)-induced mouse *** The effect of MSC-EVs on A549 cells was assessed by fibrosis markers[collagen I andα-smooth muscle actin(α-SMA),oxidative stress regulators[nuclear factor E2-related factor 2(Nrf2)and heme oxygenase-1(HO-1),and inflammatory regu-lators[nuclear factor-kappaB(NF-κB)p65,interleukin(IL)-1β,and IL-2].Similarly,they were assessed in the lungs of mice where PF was induced by BLM after MSC-EV ***-EVs ion PF mice were detected by pathological staining and western ***-cell RNA sequencing was performed to investigate the effects of the MSC-EVs on gene expression profiles of macrophages after modeling in *** Transforming growth factor(TGF)-β1 enhanced fibrosis in A549 cells,significantly increasing collagen I andα-SMA ***,treatment with MSC-EVs demonstrated a remarkable alleviation of these ***,the expression of oxidative stress regulators,such as Nrf2 and HO-1,along with inflammatory regulators,including NF-κB p65 and IL-1β,were mitigated by MSC-EV ***,in a parallel manner,MSC-EVs exhibited a downregulatory impact on collagen deposition,oxidative stress injuries,and inflammatory-related cytokines in the lungs of mice with ***,the mRNA sequencing results suggested that BLM may induce PF in mice by upregulating pulmonary collagen fiber deposition and triggering an immune inflammatory *** findings collectively highlight the potential therapeutic efficacy of MSC-EVs in ameliorating fibrotic processes,oxidative stres

关键词： Mesenchymal stem cells Extracellular vesicles Pulmonary fibrosis Oxidative stress response Epithelial-mesenchymal transition

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Postnatal development of rat retina:a continuous observation and comparison between the organotypic retinal explant model and in vivo development

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Neural Regeneration Research 2025年第3期20卷 900-912页

作者： Baoqi Hu Rui Wang Hanyue Zhang xiou Wang Sijia Zhou Bo Ma Yan Luan xin Wang xinlin Chen Zhichao Zhang Qianyan Kang Department of Ophthalmology The First Affiliated Hospital of Xi’an Jiaotong UniversityXi’anShaanxi ProvinceChina Department of Ophthalmology The First Affiliated Hospital of Northwest UniversityXi’anShaanxi ProvinceChina Institute of Neurobiology Xi’an Jiaotong University Health Science CenterXi’anShaanxi ProvinceChina

The organotypic retinal explant culture has been established for more than a decade and offers a range of unique advantages compared with in vivo experiments and cell ***,the lack of systematic and continuous comparison between in vivo retinal development and the organotypic retinal explant culture makes this model controversial in postnatal retinal development ***,we aimed to verify the feasibility of using this model for postnatal retinal development studies by comparing it with the in vivo *** this study,we showed that postnatal retinal explants undergo normal development,and exhibit a consistent structure and timeline with retinas in ***,we used SOX2 and PAX6 immunostaining to identify retinal progenitor *** then examined cell proliferation and migration by immunostaining with Ki-67 and doublecortin,***-67-and doublecortin-positive cells decreased in both in vivo and explants during postnatal retinogenesis,and exhibited a high degree of similarity in abundance and distribution between ***,we used Ceh-10 homeodomain-containing homolog,glutamate-ammonia ligase(glutamine synthetase),neuronal nuclei,and ionized calcium-binding adapter molecule 1 immunostaining to examine the emergence of bipolar cells,Müller glia,mature neurons,and microglia,*** timing and spatial patterns of the emergence of these cell types were remarkably consistent between in vivo and explant *** study showed that the organotypic retinal explant culture model had a high degree of consistency with the progression of in vivo early postnatal retina *** findings confirm the accuracy and credibility of this model and support its use for long-term,systematic,and continuous observation.

关键词： bipolar cells differentiation in vivo microglia Müller glia organotypic retinal explant culture postnatal retina development proliferation retinal progenitor cells

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