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MeSH Disease

HGNC Genes

SARS-CoV-2 proteins

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    SARS-CoV-2 infection MESHD in the Syrian hamster model causes inflammation MESHD as well as type I interferon dysregulation MESHD in both respiratory and non-respiratory tissues including the heart and kidney

    Authors: Magen Francis; Una Goncin; Andrea Kroeker; Cynthia Swan; Robyn Ralph; Yao Lu; Athema Etzioni; Darryl Falzarano; Volker Gerdts; Steve Machtaler; Jason Kindrachuk; Alyson Ann Kelvin

    doi:10.1101/2021.04.07.438843 Date: 2021-04-08 Source: bioRxiv

    COVID-19 MESHD ( coronavirus disease 2019 MESHD) caused SARS-CoV-2 (severe acute respiratory syndrome coronavirus 2) infection MESHD is a disease affecting several organ systems. A model that captures all clinical symptoms of COVID-19 MESHD as well as long-haulers disease is needed. We investigated the host responses associated with infection in several major organ systems including the respiratory tract, the heart, and the kidneys after SARS-CoV-2 infection MESHD in Syrian hamsters. We found significant increases in inflammatory cytokines ( IL-6 HGNC, IL-1beta HGNC, and TNF HGNC) and type II interferons whereas type I interferons were inhibited. Examination of extrapulmonary tissue indicated inflammation MESHD in the kidney, liver, and heart which also lacked type I interferon upregulation. Histologically, the heart had evidence of mycarditis and microthrombi while the kidney had tubular inflammation MESHD. These results give insight into the multiorgan disease experienced by people with COVID-19 MESHD and possibly the prolonged disease in people with post-acute sequelae of SARS-CoV-2 (PASC).

    SARS-CoV-2 spike PROTEIN protein induces inflammation MESHD via TLR2 HGNC-dependent activation of the NF-κB pathway

    Authors: Shahanshah Khan; Mahnoush S. Shafiei; Christopher Longoria; John Schoggins; Rashmin C. Savani; Hasan Zaki

    doi:10.1101/2021.03.16.435700 Date: 2021-03-17 Source: bioRxiv

    Pathogenesis of COVID-19 MESHD is associated with a hyperinflammatory response; however, the precise mechanism of SARS-CoV-2-induced inflammation MESHD is poorly understood. Here we investigated direct inflammatory functions of major structural proteins of SARS-CoV-2. We observed that spike (S) protein PROTEIN potently induces inflammatory cytokines and chemokines including IL-6 HGNC, IL-1b HGNC, TNFa HGNC, CXCL1 HGNC, CXCL2 HGNC, and CCL2 HGNC, but not IFNs in human and mouse macrophages. No such inflammatory response was observed in response to membrane (M), envelope (E), and neucleocapsid ( N) proteins PROTEIN. When stimulated with extracellular S protein PROTEIN, human lung epithelial cells A549 also produce inflammatory cytokines and chemokines. Interestingly, epithelial cells expressing S protein PROTEIN intracellularly are non-inflammatory, but elicit an inflammatory response in macrophages when co-cultured. Biochemical studies revealed that S protein PROTEIN triggers inflammation MESHD via activation of the NF-kB pathway in a MyD88 HGNC-dependent manner. Further, such an activation of the NF-kB pathway is abrogated in Tlr2 HGNC-deficient macrophages. Consistently, administration of S protein PROTEIN induces IL-6, TNF-a, and IL-1b in wild-type, but not Tlr2-deficient mice. Together these data reveal a mechanism for the cytokine storm during SARS-CoV-2 infection MESHD and suggest that TLR2 could be a potential therapeutic target for COVID-19 MESHD.

    Soluble angiotensin-converting enzyme 2 HGNC is transiently elevated in COVID-19 MESHD and correlates with specific inflammatory and endothelial markers

    Authors: Annika Lundstrom; Louise Ziegler; Sebastian Havervall; Ann-Sofie Rudberg; Fien Von Meijenfeldt; Ton Lisman; Nigel Mackman; Per Sanden; Charlotte Thalin

    doi:10.1101/2021.03.03.21252841 Date: 2021-03-05 Source: medRxiv

    RationaleAngiotensin-converting enzyme 2 ( ACE2 HGNC) is the main entry receptor of severe acute respiratory syndrome coronavirus 2 MESHD (SARS-CoV-2), but how SARS-CoV-2 interactions with ACE2 HGNC influences the renin-angiotensin system (RAS) in Coronavirus disease 2019 MESHD ( COVID-19 MESHD) is unknown. ObjectiveTo measure circulating ACE2 HGNC and ACE HGNC levels in COVID-19 MESHD patients and investigate association with risk factors, outcome and inflammatory markers. Methods and resultsSoluble ACE2 HGNC (sACE2) and sACE concentrations were measured by ELISA in plasma samples from 114 hospital-treated COVID-19 MESHD patients and 10 healthy controls. Follow-up samples after four months were available for 58/114 patients. Von Willebrand MESHD Von Willebrand HGNC factor ( VWF HGNC), factor VIII ( fVIII HGNC), D-dimer, interleukin 6 ( IL-6 HGNC), tumor necrosis MESHD factor and plasminogen activator inhibitor 1 ( PAI-1 HGNC) had previously been determined. Levels of sACE2 were higher in COVID-19 MESHD patients than in healthy controls, median 5.0 (interquartile range 2.8-11.8) ng/ml versus 1.4 (1.1-1.6) ng/ml, p < 0.0001. sACE2 was higher in men than women, but were not affected by other risk factors for severe COVID-19 MESHD. sACE 2 decreased to 2.3 (1.6-3.9) ng/ml at follow-up, p < 0.0001, but remained higher than in healthy controls, p=0.012. Follow-up sACE2 levels were higher with increasing age, BMI, total number of comorbidities, for patients with diabetes MESHD and patients on RAS-inhibition. sACE was marginally lower during COVID-19 MESHD compared with at follow-up, 57 (45-70) ng/ml versus 72 (52-87) ng/ml, p=0.008. Levels of sACE2 and sACE did not differ depending on survival or disease severity (care level, respiratory support). sACE2 during COVID-19 MESHD correlated with VWF HGNC, fVIII HGNC and D-dimer, while sACE correlated with IL-6 HGNC, TNF HGNC and PAI-1 HGNC. ConclusionssACE2 was transiently elevated in COVID-19 MESHD, likely due to increased shedding from infected cells. sACE2 and sACE during COVID-19 MESHD differed distinctly in their correlations with markers of inflammation MESHD and endothelial dysfunction, suggesting release from different cell types and/or vascular beds.

    Discovery of a AhR HGNC flavonoid agonist that counter-regulates ACE2 HGNC expression in rodent models of inflammation MESHD and attenuates ACE2 HGNC-SARS-CoV2 interaction in vitro

    Authors:

    doi:10.1101/2021.02.24.432203 Date: 2021-02-24 Source: bioRxiv

    The severe acute respiratory syndrome MESHD (SARS)-CoV-2, a newly emerged coronavirus first identified in 2019, is the pathogenetic agent od Corona Virus Induced Disease MESHD (COVID)19. The virus enters the human cells after binding to the angiotensin converting enzyme (ACE) 2 HGNC receptor in target tissues. ACE2 HGNC expression is induced in response to inflammation MESHD. The colon expression of ACE2 HGNC is upregulated in patients with inflammatory bowel disease MESHD ( IBD MESHD), highlighting a potential risk of intestinal inflammation MESHD in promoting viral entry in the human body. Because mechanisms that regulate ACE2 HGNC expression in the intestine are poorly understood and there is a need of anti-SARS-CoV2 therapies, we have settled to investigate whether natural flavonoids might regulate the expression of ACE2 HGNC in intestinal models of inflammation MESHD. The results of these studies demonstrated that pelargonidin, a natural flavonoid bind and activates the Aryl hydrocarbon Receptor HGNC ( AhR HGNC) in vitro and reverses intestinal inflammation MESHD caused by chronic exposure to high fat diet or to the intestinal braking-barrier agent DSS in a AhR HGNC-dependent manner. In these two models, development of colon inflammation MESHD associated with upregulation of ACE2 HGNC mRNA expression. Colon levels of ACE2 HGNC mRNA were directly correlated with TNF HGNC mRNA levels. In contrast to ACE2 HGNC the angiotensin 1-7 receptor MAS was downregulated in the inflamed tissues. Molecular docking studies suggested that pelargonidin binds a fatty acid binding pocket on the receptor binding domain of SARS-CoV2 Spike protein PROTEIN. In vitro studies demonstrated that pelargonidin significantly reduces the binding of SARS-CoV2 Spike protein PROTEIN to ACE2 HGNC and reduces the SARS-CoV2 replication in a concentration-dependent manner. In summary, we have provided evidence that a natural flavonoid might hold potential in reducing intestinal inflammation MESHD and ACE2 HGNC induction in the inflamed colon in a AhR HGNC-dependent manner.

    Targeting of the NLRP3 HGNC Inflammasome for early COVID-19 MESHD

    Authors: Carlo Marchetti; Kara Mould; Isak W. Tengesdal; William J. Janssen; Charles A. Dinarello

    doi:10.1101/2021.02.24.432734 Date: 2021-02-24 Source: bioRxiv

    Following entry and replication of Severe Acute Respiratory Syndrome-coronavirus MESHD 2 (SARS-CoV-2) into ACE2 expressing cells, the infected cells undergo lysis releasing more virus but also cell contents. In the lung, constitutive cytokines such as IL-1 HGNC are released together with other cell contents. A cascade of inflammatory cytokines ensues, including chemokines and IL-1{beta}, triggering both local as well as systemic inflammation MESHD. This cascade of inflammatory cytokines in patients with COVID-19 MESHD is termed Cytokine Release Syndrome ( CRS MESHD), and is associated with poor outcomes and death MESHD. Many studies reveal that blocking IL-1{beta HGNC} activities in COVID-19 MESHD patients reduces disease severity and deaths MESHD. Here we report highly significant circulating levels of IL-1{beta HGNC}, IL-1 Receptor antagonist HGNC, IL-6 HGNC, TNF HGNC, IL-10 HGNC and soluble urokinase plasminogen activator receptor HGNC in COVID-19 MESHD patients with mild or no symptoms. We also report that in circulating myeloid cells from the same patients, there is increased expression of the NOD-, LRR- and pyrin domain-containing 3 ( NLRP3 HGNC) early in the infection. We observed increased NLRP3 HGNC gene expression in myeloid cells correlated with IL-1{beta HGNC} gene expression and also with elevated circulating IL-1{beta HGNC} levels. We conclude that early in SARS-CoV-2 infection MESHD, NLRP3 HGNC activation takes place and initiates the CRS. Thus, NLRP3 HGNC is a target to reduce the organ damage of inflammatory cytokines of the CRS.

    A cannabinoid receptor agonist shows anti-inflammatory and survival properties in human SARS-CoV-2-infected iPSC-derived cardiomyocytes MESHD

    Authors: Luiz Guilherme H.S. Aragao; Julia T Oliveira; Jairo R Temerozo; Mayara A Mendes; Jose Alexandre Salerno; Carolina da S. G. Pedrosa; Teresa Puig-Pijuan; Carla Verissimo; Isis M Ornelas; Thayana Torquato; Gabriela Vitoria; Carolina Q. Sacramento; Natalia Fintelman-Rodrigues; Suelen da Silva Gomes Dias; Vinicius Cardoso Soares; Leticia R. Q. Souza; Karina Karmirian; Livia Goto-Silva; Diogo Biagi; Estela M. Cruvinel; Rafael Dariolli; Daniel R. Furtado; Patricia T. Bozza; Helena L. Borges; Thiago Moreno L. Souza; Marilia Zaluar P. Guimaraes; Stevens Rehen

    doi:10.1101/2021.02.20.431855 Date: 2021-02-21 Source: bioRxiv

    Coronavirus disease 2019 MESHD ( COVID-19 MESHD) is caused by acute respiratory syndrome coronavirus 2 MESHD (SARS-CoV-2), which can infect several organs and lead to loss of vital organ function, especially impacting respiratory capacity. Among the extrapulmonary manifestations of COVID-19 MESHD is myocardial injury MESHD, caused both directly and indirectly by SARS-CoV-2, and which is associated with a high risk of mortality. One of the hallmarks of severe COVID-19 MESHD is the "cytokine storm", at which point the immune system malfunctions, leading to possible organ failure MESHD and death MESHD. Cannabinoids are known to have anti-inflammatory properties by negatively modulating the release of pro-inflammatory cytokines. Herein, we investigated the effects of the cannabinoid agonist WIN 55,212-2 (WIN) on SARS-CoV-2-infected MESHD human iPSC-derived cardiomyocytes (hiPSC-CMs). Although WIN did not modulate angiotensin-converting enzyme II, nor reduced SARS-CoV-2 infection MESHD and replication in hiPSC-CMs at the conditions tested, it had anti-inflammatory and protective effects by reducing the levels of interleukins 6, 8,18 and tumor necrosis factor-alpha HGNC tumor necrosis factor-alpha MESHD ( TNF HGNC-) and lactate dehydrogenase (LDH) activity in these cells without causing hypertrophic cardiac damage MESHD. These findings suggest that cannabinoids should be further investigated as an alternative therapeutic tool for the treatment of COVID-19 MESHD. HighlightsO_LIHuman iPSC-derived cardiomyocytes (hiPSC-CMs) express CB1 HGNC receptor. C_LIO_LIThe cannabinoid receptor agonist, WIN 55,212-2 (WIN), does not influence SARS-CoV-2 infection MESHD in hiPSC-CMs. C_LIO_LIWIN reduces inflammation MESHD and death MESHD in SARS-CoV-2-infected hiPSC-CMs MESHD. C_LI

    KLF2 HGNC is a therapeutic target for COVID-19 MESHD induced endothelial dysfunction MESHD

    Authors: Suowen Xu; Sihui Luo; Xueying Zheng; Jianping Weng

    doi:10.1101/2021.02.20.432085 Date: 2021-02-20 Source: bioRxiv

    Coronavirus disease 2019 MESHD ( COVID-19 MESHD) is regarded as an endothelial disease ( endothelialitis MESHD) with its mechanism being incompletely understood. Emerging evidence has demonstrated that the endothelium represents the Achilles heel in COVID-19 MESHD patients and that endothelial dysfunction precipitates COVID-19 MESHD and accompanying multi-organ injuries. Thus, pharmacotherapies targeting endothelial dysfunction have potential to ameliorate COVID-19 MESHD and its cardiovascular complications. Primary human umbilical vein endothelial cells (HUVECs) and human pulmonary microvascular endothelial cells (HPMECs) were treated with serum from control subjects or COVID-19 MESHD patients. Downstream monocyte adhesion and associated gene/protein expression was evaluated in endothelial cells exposed to COVID-19 MESHD patient serum in the presence of KLF2 HGNC activator (Atorvastatin) or KLF2 HGNC overexpression by an adenoviral vector. Here, we demonstrate that the expression of KLF2 HGNC was significantly reduced and monocyte adhesion was increased in endothelial cells treated with COVID-19 MESHD patient serum due to elevated levels of pro-adhesive molecules, ICAM1 HGNC and VCAM1 HGNC. IL-1{beta HGNC} and TNF HGNC-, two cytokines observed in cytokine release syndrome in COVID-19 MESHD patients, decreased KLF2 HGNC gene expression. Next-generation RNA-sequencing data showed that atorvastatin treatment leads to a cardiovascular protective transcriptome associated with improved endothelial function (vasodilation, anti- inflammation MESHD, antioxidant status, anti- thrombosis MESHD/-coagulation, anti- fibrosis MESHD and reduced angiogenesis). Treatment of HPMECs with atorvastatin or KLF2 HGNC adenovirus ameliorate COVID-19 MESHD serum-induced increase in endothelial inflammation MESHD and monocyte adhesion by increasing KLF2 HGNC expression. Altogether, the present study demonstrates that genetic and pharmacological activation of KLF2 HGNC represses COVID-19 MESHD associated endothelial dysfunction, heralding a potentially new direction to treat endothelialitis MESHD accompanying COVID-19 MESHD. Graphical Abstract O_FIG O_LINKSMALLFIG WIDTH=200 HEIGHT=124 SRC="FIGDIR/small/432085v1_ufig1.gif" ALT="Figure 1"> View larger version (19K): org.highwire.dtl.DTLVardef@42bddforg.highwire.dtl.DTLVardef@1bf86e3org.highwire.dtl.DTLVardef@130de80org.highwire.dtl.DTLVardef@15fc5e9_HPS_FORMAT_FIGEXP M_FIG Endothelial dysfunction contributes to COVID-19 MESHD-associated multi-organ endothelialtis: potential role of KLF2 HGNC C_FIG

    Early immune pathology and persistent dysregulation MESHD characterise severe COVID-19 MESHD

    Authors: Laura Bergamaschi; Federica Mescia; Lorinda Turner; Aimee Hanson; Prasanti Kotagiri; Benjamin J. Dunmore; Helene Ruffieux; Aloka DeSa; Oisin Huhn; Mark R. Wills; Stephen Baker; Rainer Doffinger; Gordon Dougan; Anne Elmer; Ian G Goodfellow; Ravindra K. Gupta; Myra Hosmillo; Kelvin Hunter; Nathalie Kingston; Paul J. Lehner; Nicholas J. Matheson; Jeremy K. Nicholson; Anna M. Petrunkina; Sylvia Richardson; Caroline Saunders; James E.D. Thaventhiran; Erik J.M. Toonen; Michael P. Weekes; - CambridgeInstituteofTherapeuticImmunologyandInfectiousDisease-NationalInstituteofHealthResearch(CITI; Mark Toshner; Christoph Hess; John R. Bradley; Paul A. Lyons; Kenneth G.C. Smith

    doi:10.1101/2021.01.11.20248765 Date: 2021-01-15 Source: medRxiv

    In a study of 207 SARS-CoV2-infected MESHD individuals with a range of severities followed over 12 weeks from symptom onset, we demonstrate that an early robust immune response, without systemic inflammation MESHD, is characteristic of asymptomatic or mild disease. Those presenting to hospital had delayed adaptive responses and systemic inflammation MESHD already evident at around symptom onset. Such early evidence of inflammation MESHD suggests immunopathology may be inevitable in some individuals, or that preventative intervention might be needed before symptom onset. Viral load does not correlate with the development of this pathological response, but does with its subsequent severity. Immune recovery is complex, with profound persistent cellular abnormalities correlating with a change in the nature of the inflammatory response, where signatures characteristic of increased oxidative phosphorylation and reactive-oxygen species-associated inflammation MESHD replace those driven by TNF HGNC and IL-6 HGNC. These late immunometabolic inflammatory changes and unresolved immune cell defects, if persistent, may contribute to "long COVID".

    Cerebrospinal fluid in COVID-19 MESHD neurological complications: no cytokine storm or neuroinflammation.

    Authors: Maria A. Garcia; Paula V. Barreras; Allie Lewis; Gabriel Pinilla; Lori J. Sokoll; Thomas Kickler; Heba Mostafa; Mario Caturegli; Abhay Moghekar; Kathryn C. Fitzgerald; - Hopkins Neuro-COVID-19 Group; Carlos A Pardo

    doi:10.1101/2021.01.10.20249014 Date: 2021-01-12 Source: medRxiv

    BACKGROUND. Neurological complications MESHD occur in COVID-19 MESHD. We aimed to examine cerebrospinal fluid (CSF) of COVID-19 MESHD subjects with neurological complications MESHD and determine presence of neuroinflammatory changes implicated in pathogenesis. METHODS. Cross-sectional study of CSF neuroinflammatory profiles from 18 COVID-19 MESHD subjects with neurological complications categorized by diagnosis ( stroke MESHD, encephalopathy MESHD, headache MESHD) and illness severity (critical, severe, moderate, mild). COVID-19 MESHD CSF was compared with CSF from healthy, infectious and neuroinflammatory disorders MESHD and stroke MESHD controls (n=82). Cytokines ( IL-6 HGNC, TNF-alpha HGNC, IFN-gamma HGNC, IL-10 HGNC, IL-12p70, IL-17A HGNC), inflammation MESHD and coagulation markers (high-sensitivity- C Reactive Protein HGNC [hsCRP], ferritin, fibrinogen HGNC, D-dimer, Factor VIII) and neurofilament light chain ( NF-L HGNC), were quantified. SARS-CoV2 RNA and SARS-CoV2 IgG and IgA antibodies in CSF were tested with RT-PCR and ELISA. RESULTS. CSF from COVID-19 MESHD subjects showed a paucity of neuroinflammatory changes, absence of pleocytosis MESHD or specific increases in pro-inflammatory markers or cytokines ( IL-6 HGNC, ferritin, or D-dimer). Anti-SARS-CoV2 antibodies in CSF of COVID-19 MESHD subjects (77%) were observed despite no evidence of SARS-CoV2 viral RNA. A similar increase of pro-inflammatory cytokines ( IL-6 HGNC, TNF-alpha HGNC;, IL-12p70) and IL-10 HGNC in CSF of COVID-19 MESHD and non- COVID-19 MESHD stroke MESHD subjects was observed compared to controls. CSF-NF-L was elevated in subjects with stroke MESHD and critical COVID-19 MESHD. CSF-hsCRP was present almost exclusively in COVID-19 MESHD cases. CONCLUSION. The paucity of neuroinflammatory changes in CSF of COVID-19 MESHD subjects and lack of SARS-CoV2 RNA do not support the presumed neurovirulence of SARS-CoV2 or neuroinflammation MESHD in pathogenesis of neurological complications in COVID-19 MESHD. Elevated CSF-NF-L indicates neuroaxonal injury MESHD in COVID-19 MESHD cases. The role of CSF SARS-CoV2 IgG antibodies is still undetermined.

    Kinetics of viral load, immunological mediators and characterization 1 of a SARS-CoV-2 isolate in mild COVID-19 MESHD patients during acute phase of infection

    Authors: Anbalagan Anantharaj; Suni Gujjar; Saurabh Kumar; Nikhil Verma; Jigme Wangchuk; Naseem Ahmed Khan; Aleksha Panwar; Akshay Kanakan; Vivekanand A; Janani Srinivasa Vasudevan; Asim Das; Anil Kumar Pandey; Rajesh Pandey; Guruprasad R Medigeshi

    doi:10.1101/2020.11.05.20226621 Date: 2020-11-07 Source: medRxiv

    Over 95% of the COVID-19 MESHD cases are mild-to-asymptomatic who contribute to disease transmission whereas most of the severe manifestations of the disease are observed in elderly and in patients with comorbidities and dysregulation of immune response has been implicated in severe clinical outcomes. However, it is unclear whether asymptomatic or mild infections are due to low viral load or lack of inflammation MESHD. We have measured the kinetics of SARS-CoV-2 viral load in the respiratory samples and serum markers of inflammation MESHD in hospitalized COVID-19 MESHD patients with mild symptoms. We observed a bi-phasic pattern of virus load which was eventually cleared in most patients at the time of discharge. Viral load in saliva samples from a subset of patients showed good correlation with nasopharyngeal samples. Serum interferon levels were downregulated during early stages of infection but peaked at later stages correlating with elevated levels of T-cell cytokines and other inflammatory mediators such as IL-6 HGNC and TNF-alpha HGNC which showed a bi-phasic pattern. The clinical recovery of patients correlated with decrease in viral load and increase in interferons and other cytokines which indicates an effective innate and adaptive immune function in mild infections. We further characterized one of the SARS-CoV-2 isolate by plaque purification and show that infection of lung epithelial cells (Calu-3) with this isolate led to cytopathic effect disrupting epithelial barrier function and tight junctions. Finally we showed that zinc was capable of inhibiting SARS-CoV-2 infection MESHD in this model suggesting a beneficial effect of zinc supplementation in COVID-19 MESHD infection.

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MeSH Disease
HGNC Genes
SARS-CoV-2 Proteins


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