Corpus overview


MeSH Disease

HGNC Genes

SARS-CoV-2 proteins

There are no SARS-CoV-2 protein terms in the subcorpus


SARS-CoV-2 Proteins
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    Altered Transcript Levels of Cytokines in COVID-19 MESHD Patients

    Authors: Majid Samsami; Alireza Fatemi; Reza Jalili Khoshnoud; Karim Kohansal; Arezou Sayad; Shabnam Soghala; Shahram Arsang-Jang; Mohammad Taheri; Soudeh Ghafouri-Fard

    doi:10.21203/ Date: 2020-12-10 Source: ResearchSquare

    The pandemic caused by severe acute respiratory syndrome coronavirus 2 MESHD and the related disorder i.e. “ coronavirus disease 2019 MESHD” ( COVID-19 MESHD) have encouraged researchers to unravel the molecular mechanism of disease severity. Several lines of evidence support the impact of "cytokine storm" in the pathogenesis of severe forms of the disorder MESHD. We aimed to assess the expression levels of nine cytokine coding in COVID-19 MESHD patients admitted in a hospital. Expression levels of IFN-G HGNC, IL-2 HGNC, IL-4 HGNC, IL-6 HGNC, IL-17 HGNC, TGF-B HGNC, IL-8 HGNC and IL-1B HGNC were significantly higher in COVID-19 MESHD patients compared with healthy controls and in both female and male patients compared with sex-matched controls. However, expression of none of these cytokines was different between ICU-admitted patients and other patients except for IL-6 HGNC whose expression was lower in the former group compared with the latter (ratio of means = 0.33, P value = 4.82E-02). Expression of TNF-A HGNC was not different between COVID-19 MESHD patients and healthy controls. Then, we assessed diagnostic power of cytokine coding genes in differentiating between COVID-19 MESHD patients and controls. The area under curve (AUC) values range from 0.94 for IFN-G HGNC to 1.0 for IL-2 HGNC and IL-1B HGNC. After combining the transcript levels of all cytokines, AUC, sensitivity and specificity values reached 1.0, 1.0 and 0.99, respectively. For differentiation between ICU-admitted patients and other patients, IL-4 HGNC with AUC value of 0.68, had the best diagnostic power among cytokine coding genes. Expression of none of cytokine coding genes was correlated with the assessed clinical/demographic data including age, gender, ICU admission, or CRP HGNC/ESR levels. Our study provides further evidence for contribution of “cytokine storm” in the pathobiology of moderate/severe forms of COVID-19 MESHD.

    Clinical and molecular characteristics of COVID-19 MESHD patients with persistent SARS-CoV-2 infection MESHD

    Authors: Chaoyang Sun; Junpeng Fan; Jia Huang; Ensong Guo; Yu Fu; Si Liu; Rourou Xiao; Chen Liu; Funian Lu; Tianyu Qin; Chao He; Zizhuo Wang; Xu Qin; Dianxing Hu; Lixin You; Xi Li; Tian Wang; Peng Wu; Gang Chen; Jianfeng Zhou; Kezhen Li

    doi:10.21203/ Date: 2020-10-02 Source: ResearchSquare

    The clinical features, molecular characteristics, and immune responses of COVID-19 MESHD patients with persistent SARS-CoV-2 infection MESHD are not yet well described. In this study, we investigated the differences in clinical parameters, laboratory indexes, plasma cytokines, and peripheral blood mononuclear cell responses, which were assessed using single-cell RNA-sequencing in patients with non-critical COVID-19 MESHD with long durations (LDs) and short durations (SDs) of viral shedding. Our results revealed that clinical parameters and laboratory indexes, such as c-reactive protein (CRP) HGNC and D-dimer, were comparable between SDs and LDs. Most inflammatory cytokines/chemokines, such as IL-2 HGNC, IL2R HGNC, TNFα HGNC/β, IL1β HGNC, and CCL5 HGNC were present at low levels in LDs. Our single-cell RNA-sequencing revealed a reconfiguration of the peripheral immune cell phenotype in LDs, including decreases in natural killer (NK) cells and CD14+ monocytes and an increase in regulatory T cells (Tregs). Furthermore, most cell subsets in LDs consistently exhibited reduced expression of ribosomal protein (RP) genes, indicating dysfunctions in cytokine/chemokine synthesis, folding, modification, and assembly. Accordingly, the negative correlation between the RP levels and viral shedding duration was validated in an independent cohort of bulk-RNA-sequencing data from 103 non-critical patients, which may help guide clinical management and resource allocation. Moreover, peripheral T and NK cells and memory B cells in LDs likely failed to activate, which contributed to the persistence of viral shedding.

    Plasma Levels of Phospholipids in Patients With COVID-19 MESHD; A Promising Simple Biochemical Parameter to Evaluate the Disease Severity

    Authors: Mohammed Abdalla; Noor Eldin Mohamed Ismail; ahmed h mohamed; Rita M Borik; Ali a ali; Yasser O Mosaad

    doi:10.21203/ Date: 2020-08-11 Source: ResearchSquare

    Background Cronavirus-19 ( COVID-19 MESHD) pandemic is a worldwide public health problem knowing in China recently from December 25, 2019. Phospholipids are structural components of mammalian cytoskeleton and cell membranes. Phospholipids is an anionic lipid found in mammalian membranes in low amounts (1–2%) of the total phospholipids. Also, it suppressed viral attachment to the plasma membrane and subsequent replication in lung cells.  Aim: The present study was carried out to explain the correlation between the plasma phospholipids as well as secretory phospholipase-A2α2 (sPLA2α2) and cytokine storm; tumor necrosis factor ( TNF)-α HGNC, interleukin--1β HGNC ( IL-1β HGNC), interleukin-6 (IL)-6 HGNC and interleukin-13 HGNC ( IL-13_ HGNC levels of patients with COVID-19 MESHD to assess the infection severity. Methods: Serum samples from enrolled 34 patients with mild, moderate, and acute COVID-19 MESHD infection. Complete blood picture (CBC), plasma d-dimer, ferritin, C-reactive protein HGNC ( CRP HGNC), lipid profile, phospholipids, sPLA2α2 and TNF-α HGNC, IL-1β HGNC, IL-6 HGNC and IL-13 HGNC as well as lung computed tomography (CT) imaging.Results: CBC showed that the presence of leukopenia, lymphopenia, eosinopenia in patient with mild, moderate, and acute COVID-19 MESHD infection. Also, significant increase in plasma d-dimer, CRP HGNC, ferritin, triacyclglycerols, TNF-α HGNC, IL-1β HGNC, IL-6 HGNC and IL-13 HGNC levels as well as sPLA2α2 activity when compared to normal persons. However, plasma levels of phospholipids, cholesterol, HDL-C and LDL-C were decreased significantly in patient with acute COVID-19 MESHD infection only, when compared to normal persons. In addition, lung computed tomography (CT) scan showed that the presence of ground glass opacity (GGO), bronchial wall thickening, crazy paving sign as well as right, left, upper and lower lung predominant in patient with mild, moderate and acute COVID-19 MESHD infection. The levels of blood leukopenia, lymphopenia and eosinopenia as well as plasma phospholipids d-dimer, CRP HGNC, ferritin, cytokine storm and sPLA2α2 were pronounced in group of patients with acute COVID-19 MESHD infection more the mild and moderate one.Conclusion: The present study was showed that there is a correlation between plasma phospholipids depletion as well as elevation sPLA2α2 and cytokines storm with the severity of COVID-19 MESHD infection. Also, the plasma phospholipids levels can used to estimate COVID-19 MESHD infection severity and help to identify patients into three classes: mild, moderate and severe one.

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MeSH Disease
HGNC Genes
SARS-CoV-2 Proteins

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