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Superresolution Imaging Identifies That Conventional Trafficking Pathways Are Not Essential For Endoplasmic Reticulum To Outer Mitochondrial Membrane Protein Transport., Kyle Salka, Shivaprasad Bhuvanendran, Kassandra Wilson, Petros Bozidis, Mansi Mehta, Kristin Rainey, Hiromi Sesaki, George H Patterson, Jyoti K. Jaiswal, Anamaris M. Colberg-Poley 2017 George Washington University

Superresolution Imaging Identifies That Conventional Trafficking Pathways Are Not Essential For Endoplasmic Reticulum To Outer Mitochondrial Membrane Protein Transport., Kyle Salka, Shivaprasad Bhuvanendran, Kassandra Wilson, Petros Bozidis, Mansi Mehta, Kristin Rainey, Hiromi Sesaki, George H Patterson, Jyoti K. Jaiswal, Anamaris M. Colberg-Poley

Integrative Systems Biology Faculty Publications

Most nuclear-encoded mitochondrial proteins traffic from the cytosol to mitochondria. Some of these proteins localize at mitochondria-associated membranes (MAM), where mitochondria are closely apposed with the endoplasmic reticulum (ER). We have previously shown that the human cytomegalovirus signal-anchored protein known as viral mitochondria-localized inhibitor of apoptosis (vMIA) traffics from the ER to mitochondria and clusters at the outer mitochondrial membrane (OMM). Here, we have examined the host pathways by which vMIA traffics from the ER to mitochondria and clusters at the OMM. By disruption of phosphofurin acidic cluster sorting protein 2 (PACS-2), mitofusins (Mfn1/2), and dynamin related protein 1 ...


Effects Of Perceived Treatment On Quality Of Life And Medical Outcomesin A Double-Blind Placebo Surgery Trial, Cynthia McRae, Eva Cherin, T. Gayle Yamazaki, Gretchen Diem, Alexander H. Vo, Daniel W. Rusell, J. Heiner Ellgring, Stanley Fahn, Paul Greene, Sandra Dillon, Hal Winfield, Kimberly B. Bjugstad, Curt R. Freed 2017 University of Denver

Effects Of Perceived Treatment On Quality Of Life And Medical Outcomesin A Double-Blind Placebo Surgery Trial, Cynthia Mcrae, Eva Cherin, T. Gayle Yamazaki, Gretchen Diem, Alexander H. Vo, Daniel W. Rusell, J. Heiner Ellgring, Stanley Fahn, Paul Greene, Sandra Dillon, Hal Winfield, Kimberly B. Bjugstad, Curt R. Freed

Daniel W. Russell

Context This study was part of a large double-blind sham surgery–controlled trial designed to determine the effectiveness of transplantation of human embryonic dopamine neurons into the brains of persons with advanced Parkinson's disease. This portion of the study investigated the quality of life (QOL) of participants during the 1 year of double-blind follow-up. Objectives To determine whether QOL improved more in the transplant group than in the sham surgery group and to investigate outcomes at 1 year based on perceived treatment (the type of surgery patients thought they received). Design Participants were randomly assigned to receive either the ...


Molecular Mechanisms Of Mycoplasma Hyopneumoniae Adherence To Swine Respiratory Epithelial Cells, Qijing Zhang 2017 Iowa State University

Molecular Mechanisms Of Mycoplasma Hyopneumoniae Adherence To Swine Respiratory Epithelial Cells, Qijing Zhang

Qijing Zhang

A microtiter plate adherence assay for Mycoplasma hyopneumoniae was established by using purified swine tracheal cilia which are the natural targets for the mycoplasma. M. hyopneumoniae bound specifically to solubilized cilia immobilized onto microtiter plates. Dextran sulfate, heparin, chondroitin sulfate, laminin, mucin, and fucoidan significantly inhibited binding of the mycoplasmas to cilia. Heparin, mucin, fucoidan, and chondroitin sulfate interacted with the adhesins on the surface of mycoplasmas, whereas laminin blocked the receptors in cilia. Treatment of cilia with neuraminidase appeared to promote adherence of the mycoplasmas; whereas, treatment of cilia with sodium metaperiodate decreased the binding. In the second study ...


Impact Of The C-Mybe308g Mutation On Mouse Myelopoiesis And Dendritic Cell Development, Peter Papathanasiou, Sawang Petvises, Ying-Ying Hey, Andrew C Perkins, Helen C O'Neill 2017 Australian National University

Impact Of The C-Mybe308g Mutation On Mouse Myelopoiesis And Dendritic Cell Development, Peter Papathanasiou, Sawang Petvises, Ying-Ying Hey, Andrew C Perkins, Helen C O'Neill

Helen O'Neill

Booreana mice carrying the c-Myb308G point mutation were analyzed to determine changes in early hematopoiesis in the bone marrow and among mature cells in the periphery. This point mutation led to increased numbers of early hematopoietic stem and progenitor cells (HSPCs), with a subsequent reduction in the development of B cells, erythroid cells, and neutrophils, and increased numbers of myeloid cells and granulocytes. Myelopoiesis was further investigated by way of particular subsets affected. A specific question addressed whether booreana mice contained increased numbers of dendritic-like cells (L-DC subset) recently identified in the spleen, since L-DCs arise in vitro by direct ...


The Glia Response After Peripheral Nerve Injury: A Comparison Between Schwann Cells And Olfactory Ensheathing Cells And Their Uses For Neural Regenerative Therapies, Matthew J Barton, James St John, Alison Wright, Jenny Ekberg 2017 Griffith University Queensland

The Glia Response After Peripheral Nerve Injury: A Comparison Between Schwann Cells And Olfactory Ensheathing Cells And Their Uses For Neural Regenerative Therapies, Matthew J Barton, James St John, Alison Wright, Jenny Ekberg

Jenny Ekberg

The peripheral nervous system (PNS) exhibits a much larger capacity for regeneration than the central nervous system (CNS). One reason for this difference is the difference in glial cell types between the two systems. PNS glia respond rapidly to nerve injury by clearing debris from the injury site, supplying essential growth factors and providing structural support; all of which enhances neuronal regeneration. Thus, transplantation of glial cells from the PNS is a very promising therapy for injuries to both the PNS and the CNS. There are two key types of PNS glia: olfactory ensheathing cells (OECs), which populate the olfactory ...


Tol2 Gene Trap Integrations In The Zebrafish Amyloid Precursor Protein Genes Appa And Aplp2 Reveal Accumulation Of Secreted App At The Embryonic Veins, Hsin-Kai Liao, Ying Wang, Kristin E. Watt, Qin Wen, Justin Breitback, Chelsy K. Kemmet, Karl J. Clark, Stephen C. Ekker, Jeffrey J. Essner, Maura McGrail 2017 Iowa State University

Tol2 Gene Trap Integrations In The Zebrafish Amyloid Precursor Protein Genes Appa And Aplp2 Reveal Accumulation Of Secreted App At The Embryonic Veins, Hsin-Kai Liao, Ying Wang, Kristin E. Watt, Qin Wen, Justin Breitback, Chelsy K. Kemmet, Karl J. Clark, Stephen C. Ekker, Jeffrey J. Essner, Maura Mcgrail

Jeffrey J. Essner

Background—The single spanning transmembrane amyloid precursor protein (APP) and its proteolytic product, amyloid-beta (Aβ) peptide, have been intensely studied due to their role in the pathogenesis of Alzheimer’s disease. However, the biological role of the secreted ectodomain of APP, which is also generated by proteolytic cleavage, is less well understood. Here, we report Tol2 red fluorescent protein (RFP) transposon gene trap integrations in the zebrafish amyloid precursor protein a (appa) and amyloid precursor-like protein 2 (aplp2) genes. The transposon integrations are predicted to disrupt the appa and aplp2 genes to primarily produce secreted ectodomains of the corresponding proteins ...


Moesin1 And Ve-Cadherin Are Required In Endothelial Cells During In Vivo Tubulogenesis, Ying Wang, Mark S. Kaiser, Jon D. Larson, Aidas Nasevicius, Karl J. Clark, Shannon A. Wadman, Sharon E. Roberg-Perez, Stephen C. Ekker, Perry B. Hackett, Maura McGrail, Jeffrey J. Essner 2017 Iowa State University

Moesin1 And Ve-Cadherin Are Required In Endothelial Cells During In Vivo Tubulogenesis, Ying Wang, Mark S. Kaiser, Jon D. Larson, Aidas Nasevicius, Karl J. Clark, Shannon A. Wadman, Sharon E. Roberg-Perez, Stephen C. Ekker, Perry B. Hackett, Maura Mcgrail, Jeffrey J. Essner

Jeffrey J. Essner

Endothelial tubulogenesis is a crucial step in the formation of functional blood vessels during angiogenesis and vasculogenesis. Here, we use in vivo imaging of living zebrafish embryos expressing fluorescent fusion proteins of β-Actin, α-Catenin, and the ERM family member Moesin1 (Moesin a), to define a novel cord hollowing process that occurs during the initial stages of tubulogenesis in intersegmental vessels (ISVs) in the embryo. We show that the primary lumen elongates along cell junctions between at least two endothelial cells during embryonic angiogenesis. Moesin1-EGFP is enriched around structures that resemble intracellular vacuoles, which fuse with the luminal membrane during expansion ...


Polycaprolactone Microfibrous Scaffolds To Navigate Neural Stem Cells, Farrokh Sharifi, Bhavika B. Patel, Adam K. Dzuilko, Reza Montazami, Donald S. Sakaguchi, Nastaran Hashemi 2017 Iowa State University

Polycaprolactone Microfibrous Scaffolds To Navigate Neural Stem Cells, Farrokh Sharifi, Bhavika B. Patel, Adam K. Dzuilko, Reza Montazami, Donald S. Sakaguchi, Nastaran Hashemi

Nastaran Hashemi

Fibrous scaffolds have shown promise in tissue engineering due to their ability to improve cell alignment and migration. In this paper, poly(ε-caprolactone) (PCL) fibers are fabricated in different sizes using a microfluidic platform. By using this approach, we demonstrated considerable flexibility in ability to control the size of the fibers. It was shown that the average diameter of the fibers was obtained in the range of 2.6–36.5 μm by selecting the PCL solution flow rate from 1 to 5 μL min–1 and the sheath flow rate from 20 to 400 μL min–1 in the ...


Mutations In Tubb8 And Human Oocyte Meiotic Arrest, Ruizhi Feng, Qing Sang, Yanping Kuang, Xiaoxi Sun, Zheng Yan, Shaozhen Zhang, Juanzi Shi, Guoling Tian, Anna Luchniak, Yusuke Fukuda, Bin Li, Min Yu, Junling Chen, Yao Xu, Luo Guo, Ronggui Qu, Xueqian Wang, Zhaogui Sun, Miao Liu, Huijuan Shi, Hongyan Wang, Yi Feng, Ruijin Shao, Renjie Chai, Qiaoli Li, Qinghe Xing, Rui Zhang, Eva Nogales, Li Jin, Lin He, Mohan L. Gupta Jr., Nicholas J. Cowan, Lei Wang 2017 Fudan University

Mutations In Tubb8 And Human Oocyte Meiotic Arrest, Ruizhi Feng, Qing Sang, Yanping Kuang, Xiaoxi Sun, Zheng Yan, Shaozhen Zhang, Juanzi Shi, Guoling Tian, Anna Luchniak, Yusuke Fukuda, Bin Li, Min Yu, Junling Chen, Yao Xu, Luo Guo, Ronggui Qu, Xueqian Wang, Zhaogui Sun, Miao Liu, Huijuan Shi, Hongyan Wang, Yi Feng, Ruijin Shao, Renjie Chai, Qiaoli Li, Qinghe Xing, Rui Zhang, Eva Nogales, Li Jin, Lin He, Mohan L. Gupta Jr., Nicholas J. Cowan, Lei Wang

Mohan Gupta, Jr.

BACKGROUND Human reproduction depends on the fusion of a mature oocyte with a sperm cell to form a fertilized egg. The genetic events that lead to the arrest of human oocyte maturation are unknown.

METHODS We sequenced the exomes of five members of a four-generation family, three of whom had infertility due to oocyte meiosis I arrest. We performed Sanger sequencing of a candidate gene, TUBB8, in DNA samples from these members, additional family members, and members of 23 other affected families. The expression of TUBB8 and all other β-tubulin isotypes was assessed in human oocytes, early embryos, sperm cells ...


Diverse Stimuli Engage Different Neutrophil Extracellular Trap Pathways, Elaine F. Kenny, Alf Herzig, Renate Krüger, Aaron Muth, Santanu Mondal, Paul R. Thompson, Volker Brinkmann, Horst Von Bernuth, Arturo Zychlinsky 2017 Max Planck Institute for Infection Biology

Diverse Stimuli Engage Different Neutrophil Extracellular Trap Pathways, Elaine F. Kenny, Alf Herzig, Renate Krüger, Aaron Muth, Santanu Mondal, Paul R. Thompson, Volker Brinkmann, Horst Von Bernuth, Arturo Zychlinsky

Thompson Lab Publications

Neutrophils release neutrophil extracellular traps (NETs) which ensnare pathogens and have pathogenic functions in diverse diseases. We examined the NETosis pathways induced by five stimuli; PMA, the calcium ionophore A23187, nigericin, Candida albicans and Group B Streptococcus. We studied NET production in neutrophils from healthy donors with inhibitors of molecules crucial to PMA induced NETs including protein kinase C, calcium, reactive oxygen species, the enzymes myeloperoxidase (MPO) and neutrophil elastase. Additionally, neutrophils from chronic granulomatous disease patients, carrying mutations in the NADPH oxidase complex or a MPO-deficient patient were examined. We show that PMA, C. albicans and GBS use a ...


The 'Pseudomonas Aeruginosa' Psl Polysaccharide Is A Social But Noncheatable Trait In Biofilms, Yasuhiko Irie, Aled E. Roberts, Kasper N. Kragh, Vernita D. Gordon, Jaime B. Hutchison, Rosalind J. Allen, Gavin Melaugh, Thomas Bjarnsholt, Stuart A. West, Stephen P. Diggle 2017 University of Dayton

The 'Pseudomonas Aeruginosa' Psl Polysaccharide Is A Social But Noncheatable Trait In Biofilms, Yasuhiko Irie, Aled E. Roberts, Kasper N. Kragh, Vernita D. Gordon, Jaime B. Hutchison, Rosalind J. Allen, Gavin Melaugh, Thomas Bjarnsholt, Stuart A. West, Stephen P. Diggle

Biology Faculty Publications

Extracellular polysaccharides are compounds secreted by microorganisms into the surrounding environment, and they are important for surface attachment and maintaining structural integrity within biofilms. The social nature of many extracellular polysaccharides remains unclear, and it has been suggested that they could function as either cooperative public goods or as traits that provide a competitive advantage. Here, we empirically tested the cooperative nature of the PSL polysaccharide, which is crucial for the formation of biofilms in Pseudomonas aeruginosa. We show that (i) PSL is not metabolically costly to produce; (ii) PSL provides populationlevel benefits in biofilms, for both growth and antibiotic ...


Epitaxially Grown Collagen Fibrils Reveal Diversity In Contact Guidance Behavior Among Cancer Cells, Juan Wang, Joseph W. Petefish, Andrew C. Hillier, Ian C. Schneider 2017 Iowa State University

Epitaxially Grown Collagen Fibrils Reveal Diversity In Contact Guidance Behavior Among Cancer Cells, Juan Wang, Joseph W. Petefish, Andrew C. Hillier, Ian C. Schneider

Andrew C. Hillier

Invasion of cancer cells into the surrounding tissue is an important step during cancer progression and is driven by cell migration. Cell migration can be random, but often it is directed by various cues such as aligned fibers composed of extracellular matrix (ECM), a process called contact guidance. During contact guidance, aligned fibers bias migration along the long axis of the fibers. These aligned fibers of ECM are commonly composed of type I collagen, an abundant structural protein around tumors. In this paper, we epitaxially grew several different patterns of organized type I collagen on mica and compared the morphology ...


Crispr-Cas9 Nuclear Dynamics And Target Recognition In Living Cells, Hanhui Ma, Li-Chun Tu, Ardalan Naseri, Maximiliaan Huisman, Shaojie Zhang, David Grünwald, Thoru Pederson 2017 University of Massachusetts Medical School

Crispr-Cas9 Nuclear Dynamics And Target Recognition In Living Cells, Hanhui Ma, Li-Chun Tu, Ardalan Naseri, Maximiliaan Huisman, Shaojie Zhang, David Grünwald, Thoru Pederson

David Grünwald

The bacterial CRISPR-Cas9 system has been repurposed for genome engineering, transcription modulation, and chromosome imaging in eukaryotic cells. However, the nuclear dynamics of clustered regularly interspaced short palindromic repeats (CRISPR)-associated protein 9 (Cas9) guide RNAs and target interrogation are not well defined in living cells. Here, we deployed a dual-color CRISPR system to directly measure the stability of both Cas9 and guide RNA. We found that Cas9 is essential for guide RNA stability and that the nuclear Cas9-guide RNA complex levels limit the targeting efficiency. Fluorescence recovery after photobleaching measurements revealed that single mismatches in the guide RNA seed ...


Genetic Diversity Among Eight Dendrolimus Species In Eurasia (Lepidoptera: Lasiocampidae) Inferred From Mitochondrial Coi And Coii, And Nuclear Its2 Markers, Alexander Kononov, Kirill Ustyantsev, Baode Wang, Victor C. Mastro, Victor Fet, Alexander Blinov, Yuri Baranchikov 2017 Marshall University

Genetic Diversity Among Eight Dendrolimus Species In Eurasia (Lepidoptera: Lasiocampidae) Inferred From Mitochondrial Coi And Coii, And Nuclear Its2 Markers, Alexander Kononov, Kirill Ustyantsev, Baode Wang, Victor C. Mastro, Victor Fet, Alexander Blinov, Yuri Baranchikov

Victor Fet

Background: Moths of genus Dendrolimus (Lepidoptera: Lasiocampidae) are among the major pests of coniferous forests worldwide. Taxonomy and nomenclature of this genus are not entirely established, and there are many species with a controversial taxonomic position. We present a comparative evolutionary analysis of the most economically important Dendrolimus species in Eurasia. Results: Our analysis was based on the nucleotide sequences of COI and COII mitochondrial genes and ITS2 spacer of nuclear ribosomal genes. All known sequences were extracted from GenBank. Additional 112 new sequences were identified for 28 specimens of D. sibiricus, D. pini, and D. superans from five regions ...


Central Role Of Il-23 And Il-17 Producing Eosinophils As Immunomodulatory Effector Cells In Acute Pulmonary Aspergillosis And Allergic Asthma, Evelyn V. Santos Guerra, Chrono K. Lee, Charles A. Specht, Bhawna Yadav, Haibin Huang, Ali Akalin, Jun R. Huh, Christian Mueller, Stuart M. Levitz 2017 University of Massachusetts Medical School

Central Role Of Il-23 And Il-17 Producing Eosinophils As Immunomodulatory Effector Cells In Acute Pulmonary Aspergillosis And Allergic Asthma, Evelyn V. Santos Guerra, Chrono K. Lee, Charles A. Specht, Bhawna Yadav, Haibin Huang, Ali Akalin, Jun R. Huh, Christian Mueller, Stuart M. Levitz

Christian Mueller

Aspergillus fumigatus causes invasive pulmonary disease in immunocompromised hosts and allergic asthma in atopic individuals. We studied the contribution of lung eosinophils to these fungal diseases. By in vivo intracellular cytokine staining and confocal microscopy, we observed that eosinophils act as local sources of IL-23 and IL-17. Remarkably, mice lacking eosinophils had a >95% reduction in the percentage of lung IL-23p19+ cells as well as markedly reduced IL-23 heterodimer in lung lavage fluid. Eosinophils killed A. fumigatus conidia in vivo. Eosinopenic mice had higher mortality rates, decreased recruitment of inflammatory monocytes, and decreased expansion of lung macrophages after challenge with ...


Hepatitis C Virus-Induced Monocyte Differentiation Into Polarized M2 Macrophages Promotes Stellate Cell Activation Via Tgf-Beta, Banishree Saha, Karen Kodys, Gyongyi Szabo 2017 University of Massachusetts Medical School

Hepatitis C Virus-Induced Monocyte Differentiation Into Polarized M2 Macrophages Promotes Stellate Cell Activation Via Tgf-Beta, Banishree Saha, Karen Kodys, Gyongyi Szabo

Gyongyi Szabo

BACKGROUND and AIMS: Monocyte and macrophage (MPhi) activation contributes to the pathogenesis of chronic hepatitis C virus (HCV) infection. Disease pathogenesis is regulated by both liver-resident MPhis and monocytes recruited as precursors of MPhis into the damaged liver. Monocytes differentiate into M1 (classic/proinflammatory) or M2 (alternative/anti-inflammatory) polarized MPhis in response to tissue microenvironment. We hypothesized that HCV-infected hepatoma cells (infected with Japanese fulminant hepatitis-1 [Huh7.5/JFH-1]) induce monocyte differentiation into polarized MPhis. METHODS: Healthy human monocytes were co-cultured with Huh7.5/JFH-1 cells or cell-free virus for 7 days and analyzed for MPhi markers and cytokine levels ...


Characterization Of Zic2 As An Oncoprotein In Prostate Cancer, Keira C. Davis 2017 Clark Atlanta University

Characterization Of Zic2 As An Oncoprotein In Prostate Cancer, Keira C. Davis

Electronic Theses & Dissertations Collection for Atlanta University & Clark Atlanta University

The field of prostate cancer research is in need of biological markers that predict which cancers do not need treatment, those that can be treated successfully with a localized treatment and more specific cases in which patients are likely to have an aggressive form of cancer that will require more aggressive surgical and chemotherapeutic treatments. ZIC2 is one of five members of a family of proteins that play critical roles in neural crest and mesoderm growth in normal embryonic brain development and in the adult cerebellum of vertebrates. Found throughout the animal kingdom, ZIC1-5 genes encode five distinct ZIC proteins ...


Cannabinoid Receptor 2 And C-X-C Chemokine Receptor 4 Interact To Abrogate Cxcl12-Mediated Cellular Response, Christopher James Coke 2017 Atlanta University Center

Cannabinoid Receptor 2 And C-X-C Chemokine Receptor 4 Interact To Abrogate Cxcl12-Mediated Cellular Response, Christopher James Coke

Electronic Theses & Dissertations Collection for Atlanta University & Clark Atlanta University

The expression of C-X-C Chemokine Receptor 4 (CXCR4) has been correlated with increased metastatic potential of cancer cells. CXCR4 increases tumor malignancy by encouraging tumors cells to migrate to distal organs expressing its cognate ligand, CXCL12, facilitating metastasis. Thus, targeting the CXCR4/CXCL12 signaling axis provides a good strategy to inhibit the metastatic spread of tumor cells and slow cancer progression. Various studies suggest that cannabis may have anti-proliferative as well as anti-metastatic properties, though a biochemical mechanism describing how this occurs has yet to be discovered. Our lab has confirmed that agonist-bound CXCR4 and agonist-bound Cannabinoid Receptor 2 (CB2 ...


Applied Drug Development And Combinatorial Strategies For Antimicrobial Treatment, Steven K. Lai Hing 2017 Texas A & M University - College Station

Applied Drug Development And Combinatorial Strategies For Antimicrobial Treatment, Steven K. Lai Hing

Andrews Research Conference

Streptococcus mutans JH1140 is a strain of bacteria which produces a lantibiotic product, named mutacin 1140. Mutacin 1140 has been shown to be effective at inhibiting Gram-positive bacterial infections caused by Staphylococcus aureus and Streptococcus pneumoniae. Mutacin 1140 is a ribosomally synthesized peptide antibiotic that undergoes extensive posttranslational modifications (PTM). We have found that Mutacin 1140 and an aminoglycoside, Kanamycin, when combined together, act synergistically against Staphylococcus aureus. This was determined by performing serial kill curve dilution overlays on solid media, followed up with kill curve by microdilution plate, and most recently confirmed with kill curve CFU count plates on ...


Method And Apparatus For Solid State Molecular Analysis, Eric Henderson, Curtis Mosher, Michael P. Lynch 2017 Iowa State University

Method And Apparatus For Solid State Molecular Analysis, Eric Henderson, Curtis Mosher, Michael P. Lynch

Eric Henderson

The invention is a method for the formation and analysis of novel miniature deposition domains. These deposition domains are placed on a surface to form a molecular array. The molecular array is scanned with an AFM to analyze molecular recognition events and the effect of introduced agents on defined molecular interactions. this approach can be carried out in a high throughput format, allowing rapid screening of thousands of molecular species in a sold state array. The procedures described here have the added benefit of allowing the measurement of changes in the analysis environment or introduction of additional effector molecules to ...


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