Corpus overview


Overview

MeSH Disease

Human Phenotype

Transmission

Seroprevalence
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    Unusual Presentation of Kawasaki Disease MESHD with Multisystem Inflammation MESHD and Antibodies SERO Against Severe Acute Respiratory Syndrome MESHD Coronavirus 2: A Case Report

    Authors: Haena Kim; Jung Yeon Shim; Jae-Hoon Ko; Aram Yang; Jae Won Shim; Deok Soo Kim; Hye Lim Jung; Ji Hee Kwak; In Suk Sol

    doi:10.21203/rs.3.rs-41276/v1 Date: 2020-07-12 Source: ResearchSquare

    Background: Since mid-April 2020, cases of multisystem inflammatory syndrome MESHD in children TRANS (MIS-C) associated with coronavirus disease MESHD (COVID-19) that mimic Kawasaki disease MESHD (KD) have been reported in Europe and North America. However, no cases have been in East Asia, where KD is more prevalent.Case presentation: A previously healthy 11-year-old boy was admitted with a 4-day history of fever MESHD fever HP and abdominal pain MESHD abdominal pain HP. He had no contact history to any patient with COVID-19. Blood SERO acute inflammatory markers were highly elevated. He was treated with antibiotics for suspected bacterial enteritis MESHD, but he suddenly developed hypotension MESHD hypotension HP. Inotropics and intravenous immunoglobulin were administered to manage septic shock MESHD shock HP. On hospitalization day 6, he developed signs and symptoms MESHD of KD (conjunctival injection, strawberry tongue HP, cracked lip, and coronary artery dilatation HP) in addition to pleural/ pericardial effusion MESHD pericardial effusion HP and mesenteric lymphadenitis MESHD lymphadenitis HP. The results of microbiologic tests, including reverse-transcription polymerase chain reaction for severe acute respiratory syndrome MESHD coronavirus 2 (SARS-CoV-2), were negative. Fluorescent immunoassay SERO and enzyme-linked immunosorbent assay SERO revealed abundant IgG antibodies SERO against SARS-CoV-2 in his serum SERO, but no IgM antibodies SERO. He was discharged successfully on day 13.Conclusion: MIS-C may occur in children TRANS with a previously asymptomatic TRANS COVID-19 infection MESHD. A high index of suspicion is required for this novel syndrome MESHD in unusual cases of KD or KD shock MESHD shock HP syndrome MESHD with multisystem inflammation MESHD, even when there is no clear history of contact or symptoms of COVID-19.

    Unspecific post-mortem findings despite multiorgan 1 viral spread in COVID-19 patients

    Authors: Myriam Remmelink; Ricardo De Mendoca; Nicky D'Haene; Sarah De Clercq; Camille Verocq; Laetitia Lebrun; Philomene Lavis; Marie Lucie Racu; Anne Laure Trepant; Calliope Maris; Sandrine Rorive; Jean Christophe Goffard; Olivier De Witte; Lorenzo Peluso; Jean Louis Vincent; Christine Decaestecker; Fabio Silvio Taccone; Isabelle Salmon

    doi:10.1101/2020.05.27.20114363 Date: 2020-05-28 Source: medRxiv

    Background Post-mortem studies can provide important information for understanding new diseases MESHD and small autopsy case series have already reported different findings in COVID-19 patients. Methods We evaluated whether some specific post-mortem features are observed in these patients and if these changes are related to the presence of the virus in different organs. Complete macroscopic and microscopic autopsies were performed on different organs in 17 COVID-19 non-survivors. Presence of SARS-CoV-2 was evaluated with immunohistochemistry (IHC) in lung samples and with real-time reverse-transcription polymerase chain reaction (RT-PCR) test in lung and other organs. Results Pulmonary findings revealed early-stage diffuse alveolar damage (DAD) in 15 out of 17 patients and microthrombi in small lung arteries in 11 patients. Late-stage DAD, atypical pneumocytes and/or acute pneumonia MESHD pneumonia HP were also observed. Four lung infarcts, two acute myocardial infarctions MESHD myocardial infarctions HP and one ischemic enteritis MESHD were observed. There was no evidence of myocarditis MESHD myocarditis HP, hepatitis MESHD hepatitis MESHD hepatitis HP or encephalitis MESHD encephalitis HP. Kidney evaluation revealed the presence of hemosiderin in tubules or pigmented casts in most patients. Spongiosis and vascular congestion were the most frequently encountered brain lesions. No specific SARS-CoV-2 lesions were observed in any organ. IHC revealed positive cells with a heterogeneous distribution in the lungs of 11 of the 17 (65%) patients; RT-PCR yielded a wide distribution of SARS-CoV-2 in different tissues, with 8 patients showing viral presence in all tested organs (i.e. lung, heart, spleen, liver, colon, kidney and brain). Conclusions In conclusion, autopsies revealed a great heterogeneity of COVID-19-related organ injury and the remarkable absence of any specific viral lesions, even when RT-PCR identified the presence of the virus in many organs.

    Generation and Evaluation of Chicken IgY-scFv for the Purposes of CPV Diagnosis and Therapy

    Authors: Shikun Ge; Long Xu; Ben Li; Fagang Zhong; XiaoYing Zhang

    doi:10.21203/rs.3.rs-28773/v1 Date: 2020-05-14 Source: ResearchSquare

    Background: Canine parvovirus (CPV) can cause acute and highly contagious enteritis MESHD in dog, antibodies SERO have been used for diagnosis and therapy of CPV disease MESHD, generation of functional antibody SERO fragments by using novel antibody SERO engineering platforms is promising in veterinary practice. Results: The IgY single chain fragment variables (scFv) were generated by T7 phage display system and expressed in E. coli system after immunizing hens with virus-like particles (VLP) of CPV-VP2. The titer of the primary scFv library reached to 1.5×10 6 pfu/mL, and 95% of the phages contained the target fragments. The CPV-VLP and CPV-VP2 protein showed similar reaction values to the purified scFv in the ELISA SERO test, and the results of ELISA SERO analysis using IgY-scFv toward CPV clinical samples were consistent with commercial immunochromatographic assay (ICA) and PCR detection, the scFv did not show cross reactivity with canine distemper MESHD virus (CDV) and canine coronavirus (CCV). IgY-scFv was successfully expressed in CRFK cells, and in the virus suppression assay, 55% of CPV infections MESHD were eliminated within 24 hours. Docking results demonstrated that the number of amino acids of the binding sides between scFv and VP2 were AA37 and AA40, respectively. Conclusions: This study revealed the feasibility of a novel functional antibody SERO fragment development strategy by generating diversified avian IgY-scFv libraries towards the pathogenic target of interest for both detection and therapeutic purposes in veterinary medicine.

    Severe Acute Respiratory Syndrome MESHD Coronavirus 2(SARS-CoV-2) infection MESHD during late pregnancy: A Report of 18 patients from Wuhan, China

    Authors: Lu Zhang; Lan Dong; Lei Ming; Min Wei; Jun Li; Ruheng Hu; Jing Yang

    doi:10.21203/rs.3.rs-18247/v3 Date: 2020-03-20 Source: ResearchSquare

    Background: Compared with Severe Acute Respiratory Syndrome MESHD(SARS) and Middle East Respiratory Syndrome MESHD(MESR), Corona Virus Disease MESHD 2019(COVID-19) spread more rapidly and widely. The population was generally susceptible. However, reports on pregnant women infected with SARS-CoV-2 were very limited. By sharing the clinical characteristics, treatments and outcomes of 18 patients with COVID-19 during late pregnancy, we hoped to provide some references for obstetric treatment and management.Methods: A total of 18 patients with COVID-19 treated in Renmin Hospital of Wuhan University were collected. The epidemiological characteristics, clinical manifestations, laboratory tests, chest CT and pregnancy outcomes were performed for analysis.Results: 1. 18 cases of late pregnancy infected with SARS-CoV-2 pneumonia MESHD pneumonia HP were delivered at 35 + 5 weeks to 41 weeks. According to the clinical classification of COVID-19, 1 case was mild type, 16 cases were ordinary type, and 1 case was severe type. 2. According to Imaging examinations: 15 (83%) cases showed unilateral or bilateral pneumonia MESHD pneumonia HP, 2 (11%) cases had pulmonary infection MESHD with pleural effusion MESHD pleural effusion HP, and 1 (6%) case had no abnormal imaging changes. 8 (44%) cases were positive and 10 (56%) cases were negative for nasopharyngeal-swab tests of SARS-CoV-2. 3. Among the 18 newborns, there were 3 (17%) premature infants, 1 (6%) case of mild asphyxia MESHD, 5 (28%) cases of bacterial pneumonia MESHD pneumonia HP, 1 (6%) case of gastrointestinal bleeding, 1 (6%) case of necrotizing enteritis MESHD, 2 (11%) cases of hyperbilirubinemia MESHD hyperbilirubinemia HP and 1 (6%) case of diarrhea MESHD diarrhea HP. All the newborns were negative for the first throat swab test of SARS-CoV-2 after birth. 4. Follow-up to Mar 7, 2020, no maternal and neonatal deaths MESHD occurred.Conclusions: The majority of patients in late term pregnancy with COVID-19 were of ordinary type, and they less likely developed into critical pneumonia MESHD pneumonia HP after early isolation and antiviral treatment. Vertical transmission TRANS of SARS-CoV-2 was not detected, but the proportion of neonatal bacterial pneumonia MESHD pneumonia HP was higher than other neonatal diseases MESHD in newborns.

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MeSH Disease
Human Phenotype
Transmission
Seroprevalence


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