scholarly journals Urine and Free Immunoglobulin Light Chains as Analytes for Serodiagnosis of Hantavirus Infection

Viruses ◽  
2019 ◽  
Vol 11 (9) ◽  
pp. 809 ◽  
Author(s):  
Hepojoki ◽  
Kareinen ◽  
Strandin ◽  
Vaheri ◽  
Holthöfer ◽  
...  
Keyword(s):  
Point Of Care ◽  
Resonance Energy ◽  
Kidney Injury ◽  
Hemorrhagic Fever ◽  
Disease Diagnosis ◽  
Antibody Detection ◽  
Light Chains ◽  
Hantavirus Infection ◽  
Protein L ◽  
Donor And Acceptor

Rapid point-of-care testing is a megatrend in infectious disease diagnosis. We have introduced a homogeneous immunoassay concept, which is based on the simultaneous binding of antigen and protein L to a given immunoglobulin molecule. The complex formation is detected utilizing time-resolved Förster resonance energy transfer between antigen-attached donor and acceptor-labeled protein L, hence the name LFRET. Here, we demonstrate that urine can be used as a sample matrix in LFRET-based serodiagnostics. We studied urine samples collected during the hospitalization and recovery of patients with acute Puumala orthohantavirus (PUUV) infection. We compared PUUV antibody-specific LFRET signals in urine to those in plasma, and found excellent correlation in the test outcomes The LFRET test from urine was positive in 40/40 patients with acute PUUV infection. PUUV causes a mild form of hemorrhagic fever with renal syndrome, characterized by acute kidney injury and proteinuria. Immunofluorescence and western blotting demonstrated PUUV-IgG and -IgA in urine, however, the presence of intact immunoglobulins did not fully explain the LFRET signals. We purified free light chains (FLCs) from both urine and serum of healthy volunteers and patients with acute PUUV infection, and verified the presence of antigen-specific FLCs. Antigen-specific FLCs provide a new means for non-invasive antibody detection and disease diagnosis.

scholarly journals Recent Developments of Electrochemical and Optical Biosensors for Antibody Detection

2019 ◽  
Vol 21 (1) ◽  
pp. 134 ◽  
Author(s):  
Wei Xu ◽  
Daniel Wang ◽  
Derek Li ◽  
Chung Chiun Liu
Keyword(s):  
Point Of Care ◽  
Low Cost ◽  
Resonance Energy Transfer ◽  
Resonance Energy ◽  
Disease Diagnosis ◽  
Antibody Detection ◽  
Recent Developments ◽  
Care Systems ◽  
Point Of Care Systems ◽  
Detection Of Biomarkers

Detection of biomarkers has raised much interest recently due to the need for disease diagnosis and personalized medicine in future point-of-care systems. Among various biomarkers, antibodies are an important type of detection target due to their potential for indicating disease progression stage and the efficiency of therapeutic antibody drug treatment. In this review, electrochemical and optical detection of antibodies are discussed. Specifically, creating a non-label and reagent-free sensing platform and construction of an anti-fouling electrochemical surface for electrochemical detection are suggested. For optical transduction, a rapid and programmable platform for antibody detection using a DNA-based beacon is suggested as well as the use of bioluminescence resonance energy transfer (BRET) switch for low cost antibody detection. These sensing strategies have demonstrated their potential for resolving current challenges in antibody detection such as high selectivity, low operation cost, simple detection procedures, rapid detection, and low-fouling detection. This review provides a general update for recent developments in antibody detection strategies and potential solutions for future clinical point-of-care systems.

Hemorrhagic fever with renal syndrome with concurrent aortic dissection: a case report

2020 ◽  
Author(s):  
Fengqi Qiu ◽  
Congcong Li ◽  
Jianya Zhou
Keyword(s):  
Acute Kidney Injury ◽  
Aortic Dissection ◽  
Kidney Injury ◽  
Hemorrhagic Fever ◽  
Sudden Onset ◽  
High Fever ◽  
Hantaan Virus ◽  
Hantavirus Infection ◽  
Microvascular Damage ◽  
Stanford B

Abstract Background Hemorrhagic fever with renal syndrome (HFRS) is caused by hantaviruses presenting with high fever, hemorrhage, acute kidney injury. Microvascular injury and hemorrhage in mucus was often observed in patients with hantavirus infection. Infection with bacterial and virus related aortic aneurysm or dissection occurs sporadically. We present a previously unreported case of hemorrhagic fever with concurrent Stanford B aortic dissection. Case presentation: A 56-year-old man complained of high fever, generalized body ache, with decreased platelet counts of 10 × 10^9/L and acute kidney injury. The ELISA test for Hantaan virus of IgM and IgG antibodies were both positive. During the convalescent period, he complained sudden onset acute chest pain radiating to the back and the CTA revealed an aortic dissection of the descending aorta extending to iliac artery. He was diagnosed with Hemorrhagic fever with renal syndrome and Stanford B aortic dissection. The patient recovered completely after surgery with other support treatments. Conclusion We present a case of HFRS complicated with aortic dissection,and no study has reported the association of HFRS with aortic disease. However, we suppose that hantavirus infection not only cause microvascular damage but may be risk factor for acute macrovascular detriment. A causal relationship has yet to be confirmed.

scholarly journals ABO and Rhesus Blood Groups in Acute Puumala Hantavirus Infection

Viruses ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 2271
Author(s):  
Johanna Tietäväinen ◽  
Outi Laine ◽  
Satu Mäkelä ◽  
Heini Huhtala ◽  
Ilkka Pörsti ◽  
...  
Keyword(s):  
Blood Group ◽  
Blood Donors ◽  
Kidney Injury ◽  
Hemorrhagic Fever ◽  
Blood Groups ◽  
University Hospital ◽  
Hantavirus Infection ◽  
Capillary Leakage ◽  
Lower Systolic Blood Pressure ◽  
Rhesus Blood Group

Puumala hantavirus (PUUV) causes hemorrhagic fever with renal syndrome. We aimed to evaluate whether ABO and rhesus blood groups associate with the susceptibility or the severity of PUUV infection. We analyzed blood groups in 289 adult patients treated in Tampere University hospital due to PUUV infection during the years 1982–2017. Patients’ blood group distribution was compared to that of healthy, voluntary blood donors living in the Tampere University Hospital responsibility area (n = 21,833). The severity of PUUV infection, as judged by the severity of acute kidney injury (AKI), thrombocytopenia, inflammation, capillary leakage, and the length of hospital care, was analyzed across the groups. The ABO and rhesus blood group distributions did not differ between the patients and blood donors. Patients with non-O blood groups had lower systolic blood pressure compared to patients with blood group O, but there was no difference in other markers of capillary leakage or in the severity of AKI. Minor deviations in the number of platelets and leukocytes were detected between the O and non-O blood groups. To conclude, patients with blood group O may be less susceptible to hypotension, but otherwise blood groups have no major influences on disease susceptibility or severity during acute PUUV infection.

scholarly journals Coagulopathy in Acute Puumala Hantavirus Infection

Viruses ◽  
2021 ◽  
Vol 13 (8) ◽  
pp. 1553
Author(s):  
Sirpa Koskela ◽  
Satu Mäkelä ◽  
Tomas Strandin ◽  
Antti Vaheri ◽  
Tuula Outinen ◽  
...  
Keyword(s):  
Acute Kidney Injury ◽  
Platelet Count ◽  
Disseminated Intravascular Coagulation ◽  
Inflammatory Mediators ◽  
Kidney Injury ◽  
Hemorrhagic Fever ◽  
Endothelial Activation ◽  
Hantavirus Infection ◽  
Increased Risk ◽  
Low Platelet Count

Puumala hantavirus (PUUV) causes a hemorrhagic fever with renal syndrome (HFRS), also called nephropathia epidemica (NE), which is mainly endemic in Europe and Russia. The clinical features include a low platelet count, altered coagulation, endothelial activation, and acute kidney injury (AKI). Multiple connections between coagulation pathways and inflammatory mediators, as well as complement and kallikrein–kinin systems, have been reported. The bleeding symptoms are usually mild. PUUV-infected patients also have an increased risk for disseminated intravascular coagulation (DIC) and thrombosis.

scholarly journals A 10-Minute “Mix and Read” Antibody Assay for SARS-CoV-2

Viruses ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 143
Author(s):  
Juuso Rusanen ◽  
Lauri Kareinen ◽  
Lev Levanov ◽  
Sointu Mero ◽  
Sari H. Pakkanen ◽  
...  
Keyword(s):  
Antibody Response ◽  
Resonance Energy Transfer ◽  
Resonance Energy ◽  
Neutralizing Antibody ◽  
Antibody Detection ◽  
Diagnostic Tools ◽  
Human Antibody ◽  
Protein L ◽  
Specific Patient ◽  
Set Up

Accurate and rapid diagnostic tools are needed for management of the ongoing coronavirus disease 2019 (COVID-19) pandemic. Antibody tests enable detection of individuals past the initial phase of infection and help examine vaccine responses. The major targets of human antibody response in severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) are the spike glycoprotein (SP) and nucleocapsid protein (NP). We have developed a rapid homogenous approach for antibody detection termed LFRET (protein L-based time-resolved Förster resonance energy transfer immunoassay). In LFRET, fluorophore-labeled protein L and antigen are brought to close proximity by antigen-specific patient immunoglobulins of any isotype, resulting in TR-FRET signal. We set up LFRET assays for antibodies against SP and NP and evaluated their diagnostic performance using a panel of 77 serum/plasma samples from 44 individuals with COVID-19 and 52 negative controls. Moreover, using a previously described SP and a novel NP construct, we set up enzyme linked immunosorbent assays (ELISAs) for antibodies against SARS-CoV-2 SP and NP. We then compared the LFRET assays with these ELISAs and with a SARS-CoV-2 microneutralization test (MNT). We found the LFRET assays to parallel ELISAs in sensitivity (90–95% vs. 90–100%) and specificity (100% vs. 94–100%). In identifying individuals with or without a detectable neutralizing antibody response, LFRET outperformed ELISA in specificity (91–96% vs. 82–87%), while demonstrating an equal sensitivity (98%). In conclusion, this study demonstrates the applicability of LFRET, a 10-min “mix and read” assay, to detection of SARS-CoV-2 antibodies.

scholarly journals Central Nervous System and Ocular Manifestations in Puumala Hantavirus Infection

Viruses ◽  
2021 ◽  
Vol 13 (6) ◽  
pp. 1040
Author(s):  
Nina Hautala ◽  
Terhi Partanen ◽  
Anna-Maria Kubin ◽  
Heikki Kauma ◽  
Timo Hautala
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Central Nervous System Involvement ◽  
Kidney Injury ◽  
Hemorrhagic Fever ◽  
Myodes Glareolus ◽  
Hantavirus Infection ◽  
Blurred Vision ◽  
Ocular Manifestations ◽  
Bank Vole Myodes Glareolus

Puumala hantavirus (PUUV), carried and spread by the bank vole (Myodes glareolus), causes a mild form of hemorrhagic fever with renal syndrome (HFRS) called nephropathia epidemica (NE). Acute high fever, acute kidney injury (AKI), thrombocytopenia, and hematuria are typical features of this syndrome. In addition, headache, blurred vision, insomnia, vertigo, and nausea are commonly associated with the disease. This review explores the mechanisms and presentations of ocular and central nervous system involvement in acute NE.

scholarly journals Rapid homogeneous assay for detecting antibodies against SARS-CoV-2

2020 ◽  
Author(s):  
Juuso Rusanen ◽  
Lauri Kareinen ◽  
Lev Levanov ◽  
Sointu Mero ◽  
Sari H. Pakkanen ◽  
...  
Keyword(s):  
Antibody Response ◽  
Resonance Energy Transfer ◽  
Resonance Energy ◽  
Neutralizing Antibody ◽  
Antibody Detection ◽  
Diagnostic Tools ◽  
Human Antibody ◽  
Protein L ◽  
Specific Patient ◽  
Set Up

AbstractAccurate and rapid diagnostic tools are needed for management of the ongoing coronavirus disease 2019 (COVID-19) pandemic. Antibody tests enable detection of individuals past the initial phase of infection and will help to examine possible vaccine responses. The major targets of human antibody response in severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) are the spike glycoprotein (S) and nucleocapsid protein (N). We have developed a rapid homogenous approach for antibody detection termed LFRET (protein L-based time-resolved Förster resonance energy transfer immunoassay). In LFRET, fluorophore-labeled protein L and antigen are brought to close proximity by antigen-specific patient immunoglobulins of any isotype, resulting in TR-FRET signal generation.We set up LFRET assays for antibodies against S and N and evaluated their diagnostic performance using a panel of 77 serum/plasma samples from 44 individuals with COVID-19 and 52 negative controls. Moreover, using a previously described S construct and a novel N construct, we set up enzyme linked immunosorbent assays (ELISAs) for antibodies against SARS-CoV-2 S and N. We then compared the LFRET assays with these enzyme immunoassays and with a SARS-CoV-2 microneutralization test (MNT).We found the LFRET assays to parallel ELISAs in sensitivity (90-95% vs. 90-100%) and specificity (100% vs. 94-100%). In identifying individuals with or without a detectable neutralizing antibody response, LFRET outperformed ELISA in specificity (91-96% vs. 82-87%), while demonstrating an equal sensitivity (98%).In conclusion, this study demonstrates the applicability of LFRET, a 10-minute ‘mix and read’ assay, to detection of SARS-CoV-2 antibodies.

scholarly journals A Case of Hantavirus Infection Detected During the COVID-19 Pandemic

2021 ◽  
Vol 34 (2) ◽  
pp. 141-143
Author(s):  
Sinan Çetin ◽  
Ahmet Melih Şahin
Keyword(s):  
Acute Kidney Injury ◽  
Differential Diagnosis ◽  
Kidney Injury ◽  
Hemorrhagic Fever ◽  
Acute Illness ◽  
Hantavirus Infection ◽  
Bunyaviridae Family ◽  
Symptoms And Signs

Hantaviruses are viruses belonging to the Bunyaviridae family, and they cause two forms of acute illness in humans: hemorrhagic fever with renal syndrome (HFRS) and hantavirus cardiopulmonary syndrome (HCPS). HFRS form seen in our country progresses with fever, acute kidney injury, thrombocytopenia and bleeding. Therefore, hantavirus infections should be kept in mind in the differential diagnosis of patients presenting with these symptoms and signs. This report presents a case followed up with the differential diagnosis of coronavirus disease-19 (COVID-19) during the pandemic and diagnosed with HFRS due to hantavirus.

scholarly journals Severity Biomarkers in Puumala Hantavirus Infection

Viruses ◽  
2021 ◽  
Vol 14 (1) ◽  
pp. 45
Author(s):  
Tuula K. Outinen ◽  
Satu Mäkelä ◽  
Ilkka Pörsti ◽  
Antti Vaheri ◽  
Jukka Mustonen
Keyword(s):  
Acute Kidney Injury ◽  
Endothelial Cells ◽  
Kidney Injury ◽  
Hemorrhagic Fever ◽  
Hantavirus Infection ◽  
Capillary Leakage ◽  
Primary Target ◽  
Factors Affecting ◽  
Mild Disease ◽  
Host Genes

Annually, over 10,000 cases of hemorrhagic fever with renal syndrome (HFRS) are diagnosed in Europe. Puumala hantavirus (PUUV) causes most of the European HFRS cases. PUUV causes usually a relatively mild disease, which is rarely fatal. However, the severity of the infection varies greatly, and factors affecting the severity are mostly unrevealed. Host genes are known to have an effect. The typical clinical features in PUUV infection include acute kidney injury, thrombocytopenia, and increased vascular permeability. The primary target of hantavirus is the endothelium of the vessels of different organs. Although PUUV does not cause direct cytopathology of the endothelial cells, remarkable changes in both the barrier function of the endothelium and the function of the infected endothelial cells occur. Host immune or inflammatory mechanisms are probably important in the development of the capillary leakage. Several immunoinflammatory biomarkers have been studied in the context of assessing the severity of HFRS caused by PUUV. Most of them are not used in clinical practice, but the increasing knowledge about the biomarkers has elucidated the pathogenesis of PUUV infection.

scholarly journals Engineering luminescent biosensors for point-of-care SARS-CoV-2 antibody detection

2021 ◽  
Author(s):  
Susanna K. Elledge ◽  
Xin X. Zhou ◽  
James R. Byrnes ◽  
Alexander J. Martinko ◽  
Irene Lui ◽  
...  
Keyword(s):  
Point Of Care ◽  
Antibody Detection
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