JVS-vascular science最新文献

{"title":"Toll-Like Receptor 4, a potential therapeutic target of lower limb ischemic myopathy that raises further questions","authors":"Ali H. Hakim, Ulf Hedin","doi":"10.1016/j.jvssci.2024.100195","DOIUrl":"https://doi.org/10.1016/j.jvssci.2024.100195","url":null,"abstract":"","PeriodicalId":74035,"journal":{"name":"JVS-vascular science","volume":"60 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139824700","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A central arteriovenous fistula reduces systemic hypertension in a mouse model","authors":"Anand H. Brahmandam, Rafael Alves, Hao Liu, Luis Gonzalez, Y. Aoyagi, Yuichi Ohashi, John T. Langford, Carly Thaxton, R. Taniguchi, Weichang Zhang, Hualong Bai, B. Yatsula, Alan Dardik","doi":"10.1016/j.jvssci.2024.100191","DOIUrl":"https://doi.org/10.1016/j.jvssci.2024.100191","url":null,"abstract":"","PeriodicalId":74035,"journal":{"name":"JVS-vascular science","volume":"22 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139892707","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Predicting Future Occlusion or Stenosis of Lower Extremity Bypass Grafts Using Artificial Intelligence to Simultaneously Analyze All Flow Velocities Collected in Current and Previous Ultrasound Exams","authors":"Xiao Luo, Fattah Muhammad Tahabi, Dave M. Rollins, A. Sawchuk","doi":"10.1016/j.jvssci.2024.100192","DOIUrl":"https://doi.org/10.1016/j.jvssci.2024.100192","url":null,"abstract":"","PeriodicalId":74035,"journal":{"name":"JVS-vascular science","volume":"72 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139874367","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Role of Toll-like Receptor 4 in Skeletal Muscle Damage in Chronic Limb Threatening Ischaemia","authors":"Navi Ali, Patel Hemanshu, Shiwen Xu, Baker Daryll, Abraham David, Tsui Janice","doi":"10.1016/j.jvssci.2024.100194","DOIUrl":"https://doi.org/10.1016/j.jvssci.2024.100194","url":null,"abstract":"","PeriodicalId":74035,"journal":{"name":"JVS-vascular science","volume":"121 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139829132","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A porcine model of thoracic aortic aneurysms created with a retrievable drug infusion stent graft mirrors human aneurysm pathophysiology","authors":"Dahlia M. Kenawy MD ,&nbsp;Jordan F. Stafford MD ,&nbsp;Foued Amari MS ,&nbsp;Drayson Campbell BS ,&nbsp;Mahmoud Abdel-Rasoul MS, MPH ,&nbsp;Jennifer Leight PhD ,&nbsp;Youngjae Chun PhD ,&nbsp;Bryan W. Tillman MD, PhD","doi":"10.1016/j.jvssci.2024.100212","DOIUrl":"10.1016/j.jvssci.2024.100212","url":null,"abstract":"<div><h3>Objective</h3><p>Aneurysm pathophysiology remains poorly understood, in part from the disparity of murine models with human physiology and the requirement for invasive aortic exposure to apply agents used to create aneurysm models. A retrievable drug infusion stent graft (RDIS) was developed to isolate the aortic wall intraluminally for drug exposure. We hypothesized that an RDIS could deliver aneurysm-promoting enzymes to create a porcine model of thoracic aneurysms without major surgical exposure.</p></div><div><h3>Methods</h3><p>Retrievable nitinol stent graft frames were designed with an isolated drug delivery chamber, covered with polytetrafluoroethylene, and connected to a delivery wire with a drug infusion catheter installed to the outer chamber. Institutional Animal Care and Use Committee-approved Yorkshire pigs (n = 5) underwent percutaneous access of the femoral artery, baseline aortogram and stent placement in the thoracic aorta followed by 30-minute exposure to a cocktail of elastase, collagenase, and trypsin. After aspiration of excess drug, stent retrieval, and femoral artery repair, animals were recovered, with angiograms at 1 and 4 weeks followed by explant. Histological analysis, in situ zymography, and multiplex cytokine assays were performed.</p></div><div><h3>Results</h3><p>The RDIS isolated a segment of anterior aorta angiographically, while the center lumen preserved distal perfusion during drug treatment (baseline femoral mean arterial pressure, 70 ± 14 mm Hg; after RDIS, 75 ± 12; <em>P</em> = .55). Endovascular induction of thoracic aneurysms did not require prior mechanical injury and animals revealed no evidence of toxicity. Within 1 week, significant aneurysmal growth was observed in all five animals (1.4 ± 0.1 cm baseline to 2.9 ± 0.7 cm; <em>P</em> = .002) and only within the treated region of the aorta. Aneurysms persisted out to 4 weeks. Aneurysm histology demonstrated loss of elastin and collagen that was otherwise preserved in untreated aorta. Proinflammatory cytokines and increased matrix metalloproteinase activity were increased significantly within the aneurysm.</p></div><div><h3>Conclusions</h3><p>An RDIS achieves isolated drug delivery while preserving distal perfusion to achieve an endovascular porcine model of thoracic aneurysms without major surgery. This model may have value for surgical training, device testing, and to better understand aneurysm pathogenesis. Most important, although the RDIS was used to simulate aortic pathology, this tool offers intriguing horizons for focused therapeutic drug delivery directly to aneurysms and, more broadly, focused locoregional drug delivery to vessels and vascular beds.</p></div>","PeriodicalId":74035,"journal":{"name":"JVS-vascular science","volume":"5 ","pages":"Article 100212"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666350324000233/pdfft?md5=081f8c71c9fcfe81f38b0cc25693ed2d&pid=1-s2.0-S2666350324000233-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141715761","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The radiographic relationship of the femoral head, inguinal ligament, and common femoral artery bifurcation for optimal vascular access","authors":"Anand Brahmandam MD ,&nbsp;Joshua Huttler BA ,&nbsp;Kirthi Bellamkonda MSc ,&nbsp;Ocean Setia MD ,&nbsp;Jonathan A. Cardella MD ,&nbsp;William Stewart PhD ,&nbsp;Raul J. Guzman MD ,&nbsp;Cassius Iyad Ochoa Chaar MD, MS, MPH","doi":"10.1016/j.jvssci.2024.100196","DOIUrl":"10.1016/j.jvssci.2024.100196","url":null,"abstract":"<div><h3>Objective</h3><p>Common femoral artery (CFA) access is commonly used for endovascular interventions. Access site complications contribute to significant morbidity and mortality. This study characterizes the radiographic variability in the relationship of the femoral head, the inguinal ligament, and the CFA bifurcation, to identify the zone of optimal CFA access.</p></div><div><h3>Methods</h3><p>Human cadaver dissection of the inguinal ligament and CFA bifurcation was performed. The inguinal ligament and CFA bifurcation were marked with radiopaque pins and plain anteroposterior radiographs were obtained. Radiographic measurements of the femoral head length, the distance of the top of the femoral head to the inguinal ligament, and to the CFA bifurcation were obtained. Results were reported as percentage of femoral head covered by the inguinal ligament or the CFA bifurcation relative to the top of the femoral head. A heatmap was derived to determine a safe access zone between the inguinal ligament and CFA bifurcation.</p></div><div><h3>Results</h3><p>Forty-five groin dissections (male, n = 20; female, n = 25) were performed in 26 cadavers. The mean overlap of the inguinal ligament with the femoral head was 11.2 mm (range, −19.4 to 27.4 mm). There were no age (&lt;85 vs ≥85 years) or sex-related differences. In 82.6% of cadaveric CFA exposures, there was overlap between the inguinal ligament and femoral head (mean, 27.7%; range, −85.7% to 70.1%), with 55.6% having a &gt;25% overlap. In 11.1%, there was an overlap between the lower one-third of the femoral head and the CFA bifurcation. Cumulatively, heatmap analysis depicted a &gt;80% likelihood of avoiding the inguinal ligament and CFA bifurcation below the midpoint of the femoral head.</p></div><div><h3>Conclusions</h3><p>Significant variability exists in the relationship between the inguinal ligament, CFA bifurcation, and the femoral head, suggesting the lack of a consistently safe access zone. The safest access zone in &gt;80% of patients lies below the radiographic midpoint of the femoral head and the inferior aspect of the femoral head.</p></div>","PeriodicalId":74035,"journal":{"name":"JVS-vascular science","volume":"5 ","pages":"Article 100196"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666350324000075/pdfft?md5=74563e889c098870416176f9c73dad33&pid=1-s2.0-S2666350324000075-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140462865","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Venous thromboembolism swine model with reflux-induced venous hypertension","authors":"Mengjun Wang MD ,&nbsp;Xiao Lu PhD ,&nbsp;Ling Han BS ,&nbsp;José A. Diaz MD ,&nbsp;Seshadri Raju MD ,&nbsp;Ghassan S. Kassab PhD","doi":"10.1016/j.jvssci.2024.100200","DOIUrl":"10.1016/j.jvssci.2024.100200","url":null,"abstract":"<div><h3>Objective</h3><p>This study describes a novel swine model of venous thromboembolism (VTE) with reflux-induced venous hypertension.</p></div><div><h3>Methods</h3><p>Six pigs underwent disruption of the tricuspid chordae tendineae to create reflux and venous hypertension in the femoral vein. The vein was traumatized 2 to 3 weeks later by repeated withdrawal of a slightly overinflated occlusion balloon across the lumen, followed by balloon occlusion of the outflow. A small amount of thrombin was injected into the traumatized vein segment immediately after outflow occlusion. Thrombosis of the traumatized vein evolved into an organized thrombus seven weeks later. The histological features of the harvested post-thrombotic femoral vein were studied with hematoxylin and eosin and Trichrome stains.</p></div><div><h3>Results</h3><p>In all six pigs, initial disruption of the chordae tendineae was successfully performed to create tricuspid reflux and venous hypertension. After two-stage sequential procedures, a thrombus formed in the target femoral vein segment. Histology of the harvested thrombotic vein showed features of an organizing thrombus with collagen formation and fibrosis.</p></div><div><h3>Conclusions</h3><p>The novel swine VTE model may serve as a platform for developing and testing human-sized therapeutic procedures and devices in translational venous research.</p></div><div><h3>Clinical Relevance</h3><p>This study describes a swine model of VTE created by incorporating all three elements of Virchow’s triad. The model uniquely incorporates reflux-induced venous hypertension, which may be used in studying venous insufficiency and VTE in those with systemic venous hypertension. Likewise, this model may serve as a platform for development and evaluation of diagnostic imaging or therapeutic procedures and devices in subjects with systemic venous hypertension.</p></div>","PeriodicalId":74035,"journal":{"name":"JVS-vascular science","volume":"5 ","pages":"Article 100200"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666350324000117/pdfft?md5=e4da82e55e93a6015beb2e6e9d227379&pid=1-s2.0-S2666350324000117-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140273276","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hyperoxia impairs induced pluripotent stem cell-derived endothelial cells and drives an atherosclerosis-like transcriptional phenotype","authors":"Sean M. Carr PhD ,&nbsp;Katherine Owsiany MD, PhD ,&nbsp;Ottis Scrivner PhD ,&nbsp;Dylan McLaughlin MD ,&nbsp;Hanjoong Jo PhD ,&nbsp;Luke P. Brewster ,&nbsp;Katherine E. Hekman MD, PhD","doi":"10.1016/j.jvssci.2024.100193","DOIUrl":"10.1016/j.jvssci.2024.100193","url":null,"abstract":"<div><h3>Background</h3><p>Induced pluripotent stem cells (iPSCs) directed to endothelial identity (iPSC-ECs) are emerging as a potent tool for regenerative medicine in vascular disease. However, iPSC-ECs lose expression of key identity markers under standard in vitro conditions, limiting their clinical applications.</p></div><div><h3>Methods</h3><p>To model physiological in vivo conditions, we examined the bioenergetics, presence of key cell markers, and proliferative and angiogenic capacity in iPSC-ECs at late and early passage under hyperoxic (21%) and physiological (4%) oxygen concentrations.</p></div><div><h3>Results</h3><p>Physoxia resulted in relative preservation of mitochondrial bioenergetic activity, as well as CD144 expression in late passage iPSC-ECs, but not proliferative capacity or tube formation. Single cell RNA sequencing (scRNA-seq) revealed that late passage hyperoxic iPSC-ECs develop an endothelial-to-mesenchymal phenotype. Comparing scRNA-seq data from iPSC-ECs and from atherosclerotic ECs revealed overlap of their transcriptional phenotypes.</p></div><div><h3>Conclusions</h3><p>Taken together, our studies demonstrate that physiological 4% oxygen culture conditions were sufficient to improve mitochondrial function in high passage cells, but alone was insufficient to preserve angiogenic capacity. Furthermore, late passage cells under typical conditions take on an endothelial-to-mesenchymal phenotype with similarities to ECs found in atherosclerosis.</p></div>","PeriodicalId":74035,"journal":{"name":"JVS-vascular science","volume":"5 ","pages":"Article 100193"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S266635032400004X/pdfft?md5=8e5c3056fafd9f25b14200fbd26c3111&pid=1-s2.0-S266635032400004X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140279855","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hypercholesterolemia impairs collateral artery enlargement by ten-eleven translocation 1-dependent hematopoietic stem cell autonomous mechanism in a murine model of limb ischemia","authors":"Jinglian Yan PhD,&nbsp;Guodong Tie PhD,&nbsp;Amanda Tutto MS,&nbsp;Louis M. Messina MD","doi":"10.1016/j.jvssci.2024.100203","DOIUrl":"10.1016/j.jvssci.2024.100203","url":null,"abstract":"<div><h3>Objective</h3><p>The extent of collateral artery enlargement determines the risk of limb loss due to peripheral arterial disease. Hypercholesterolemia impairs collateral artery enlargement, but the underlying mechanism remains poorly characterized. This study tests the hypothesis that hypercholesterolemia impairs collateral artery enlargement through a ten-eleven translocation 1 (Tet1)-dependent hematopoietic stem cell (HSC)-autonomous mechanism that increases their differentiation into proinflammatory Ly6C^hi monocytes and restricts their conversion into proangiogenic Ly6C^low monocytes.</p></div><div><h3>Methods</h3><p>To test our hypothesis, we induced limb ischemia and generated chimeric mouse models by transplanting HSCs from either wild-type (WT) mice or hypercholesterolemic mice into lethally irradiated WT recipient mice.</p></div><div><h3>Results</h3><p>We found that the lethally irradiated WT recipient mice reconstituted with HSCs from hypercholesterolemic mice displayed lower blood flow recovery and collateral artery enlargement that was nearly identical to that observed in hypercholesterolemic mice, despite the absence of hypercholesterolemia and consistent with an HSC-autonomous mechanism. We showed that hypercholesterolemia impairs collateral artery enlargement by a Tet1-dependent mechanism that increases HSC differentiation toward proinflammatory Ly6C^hi monocytes and restricts the conversion of Ly6C^hi monocytes into proangiogenic Ly6C^low monocytes. Moreover, Tet1 epigenetically reprograms monocyte gene expression within the HSCs. Restoration of Tet1 expression in HSCs of hypercholesterolemic mice restores WT collateral artery enlargement and blood flow recovery after induction of hindlimb ischemia.</p></div><div><h3>Conclusions</h3><p>These results show that hypercholesterolemia impairs collateral artery enlargement by a novel Tet1-dependent HSC-autonomous mechanism that epigenetically reprograms monocyte gene expression within the HSCs.</p></div>","PeriodicalId":74035,"journal":{"name":"JVS-vascular science","volume":"5 ","pages":"Article 100203"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666350324000142/pdfft?md5=49f36588f10b5565ecc9178f0c001b46&pid=1-s2.0-S2666350324000142-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140797169","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Characterization of a phenol-based model for denervation of the abdominal aorta and its implications for aortic remodeling","authors":"Calvin Chao MD ,&nbsp;Caitlyn Dang BS ,&nbsp;Nidhi Reddy BA ,&nbsp;Sara Alharbi MS ,&nbsp;Jimmy Doan ,&nbsp;Akashraj Karthikeyan ,&nbsp;Brandon Applewhite PhD ,&nbsp;Bin Jiang PhD","doi":"10.1016/j.jvssci.2024.100202","DOIUrl":"10.1016/j.jvssci.2024.100202","url":null,"abstract":"<div><h3>Objective</h3><p>Sympathetic innervation plays a pivotal role in regulating cardiovascular health, and its dysregulation is implicated in a wide spectrum of cardiovascular diseases. This study seeks to evaluate the impact of denervation of the abdominal aorta on its morphology and wall homeostasis.</p></div><div><h3>Methods</h3><p>Male and female Sprague-Dawley rats (N = 12), aged 3 months, underwent midline laparotomy for infrarenal aorta exposure. Chemical denervation was induced via a one-time topical application of 10% phenol (n = 6), whereas sham controls received phosphate-buffered saline (n = 6). Animals were allowed to recover and subsequently were sacrificed after 6 months for analysis encompassing morphology, histology, and immunohistochemistry.</p></div><div><h3>Results</h3><p>At 6 months post-treatment, abdominal aortas subjected to phenol denervation still exhibited a significant reduction in nerve fiber density compared with sham controls. Denervated aortas demonstrated reduced intima-media thickness, increased elastin fragmentation, decreased expression of vascular smooth muscle proteins (α-SMA and MYH11), and elevated adventitial vascular density. Sex-stratified analyses revealed additional dimorphic responses, particularly in aortic collagen and medial cellular density in female animals.</p></div><div><h3>Conclusions</h3><p>Single-timepoint phenol-based chemical denervation induces alterations in abdominal aortic morphology and vascular remodeling over a 6-month period. These findings underscore the potential of the sympathetic nervous system as a therapeutic target for aortic pathologies.</p></div><div><h3>Clinical Relevance</h3><p>Aortic remodeling remains an important consideration in the pathogenesis of aortic disease, including occlusive, aneurysmal, and dissection disease states. The paucity of medical therapies for the treatment of aortic disease has driven considerable interest in elucidating the pathogenesis of these conditions; new therapeutic targets are critically needed. Here, we show significant remodeling after phenol-induced denervation with morphologic, histologic, and immunohistochemical features. Future investigations should integrate sympathetic dysfunction as a potential driver of pathologic aortic wall changes with additional consideration of the sympathetic nervous system as a therapeutic target.</p></div>","PeriodicalId":74035,"journal":{"name":"JVS-vascular science","volume":"5 ","pages":"Article 100202"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666350324000130/pdfft?md5=a268668ec326d9c73541b8e91aa1791d&pid=1-s2.0-S2666350324000130-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140401435","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}