OVERVIEW OF NUCLEAR FACTOR-KB (NF-KB) AND NON-STRUCTURAL PROTEIN 1 (NS1) IN PATIENTS WITH DENGUE FEVER IN PREMIER HOSPITAL, SURABAYA

Dengue fever (DF) is an acute viral fever caused by RNA virus that is transmitted by Aedes aegypti and Aedes albopictus mosquitoes. DF is also called viral arthropod-borne disease and is accompanied by headaches, joint and muscle pain. The main target of dengue infection is macrophages or monocytes and dendritic cells (DC). Infected DC is caused the viral replication and the endocytosis into endosomal, easier, thus inducing the activation of NF-ĸB transcription factor to produce proinflammatory cytokines such as Tumor Necrosis Factor-α (TNF-α), Interleukin-1 (IL-1), IL-6, IL-12 and chemokine. NF-kB is one of the transcription factors involved in the regulation of the expression of various cytokines, chemokines and anti/pro-apoptotic proteins during infection and act as indicator of disease severity. Infected DC cells are secreted NS1 protein which is the co-factor needed for viral replication and can be detected in the first eight days. The level will be higher in the initial phase of fever. The purpose of this study was to analyze the description of NF-kB and NS1 levels in the serum of patients with dengue fever through observational analytic studies through a cross-sectional approach. This study was done on 40 patients with dengue fever and 10 healthies people as negative controls. NS1 was analyzed in serum of Panbio rapid test and NF-kB level were measured by sandwich ELISA. The results are showed positive and negative NS1 results in dengue fever patients. The average NF-kB serum level in dengue fever patients was found to be higher than the control. NF-ĸB level in negative NS1 was higher than the NS1 positive group. It is showed that NS1 is detected both in the acute phase. The detection of NF-ĸB is showed the involvement of transcription factors in the development of dengue virus infection and has a protective role for host cells.

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Diterpenes/Diterpenoids and Their Derivatives as Potential Bioactive Leads against Dengue Virus: A Computational and Network Pharmacology Study

Molecules ◽

10.3390/molecules26226821 ◽

2021 ◽

Vol 26 (22) ◽

pp. 6821

Author(s):

Rasel Ahmed Khan ◽

Rajib Hossain ◽

Abolghasem Siyadatpanah ◽

Khattab Al-Khafaji ◽

Abul Bashar Ripon Khalipha ◽

...

Keyword(s):

Dengue Virus ◽

Dengue Fever ◽

Computational Study ◽

Viral Proteins ◽

Network Pharmacology ◽

Binding Affinities ◽

Ns1 Protein ◽

Structural Protein ◽

E Protein

Dengue fever is a dangerous infectious endemic disease that affects over 100 nations worldwide, from Africa to the Western Pacific, and is caused by the dengue virus, which is transmitted to humans by an insect bite of Aedes aegypti. Millions of citizens have died as a result of dengue fever and dengue hemorrhagic fever across the globe. Envelope (E), serine protease (NS3), RNA-directed RNA polymerase (NS5), and non-structural protein 1 (NS1) are mostly required for cell proliferation and survival. Some of the diterpenoids and their derivatives produced by nature possess anti-dengue viral properties. The goal of the computational study was to scrutinize the effectiveness of diterpenoids and their derivatives against dengue viral proteins through in silico study. Methods: molecular docking was performed to analyze the binding affinity of compounds against four viral proteins: the envelope (E) protein, the NS1 protein, the NS3 protein, and the NS5 protein. Results: among the selected drug candidates, triptolide, stevioside, alepterolic acid, sphaeropsidin A, methyl dodovisate A, andrographolide, caesalacetal, and pyrimethamine have demonstrated moderate to good binding affinities (−8.0 to −9.4 kcal/mol) toward the selected proteins: E protein, NS3, NS5, and NS1 whereas pyrimethamine exerts −7.5, −6.3, −7.8, and −6.6 kcal/mol with viral proteins, respectively. Interestingly, the binding affinities of these lead compounds were better than those of an FDA-approved anti-viral medication (pyrimethamine), which is underused in dengue fever. Conclusion: we can conclude that diterpenoids can be considered as a possible anti-dengue medication option. However, in vivo investigation is recommended to back up the conclusions of this study.

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Potential of Peptide-Based Non-Structural Protein 1 (NS1) Inhibitor in Obstructing Dengue Virus (DENV) Replication

Green Medical Journal ◽

10.33096/gmj.v3i1.71 ◽

2021 ◽

Vol 3 (1) ◽

pp. 1-12

Author(s):

Muhammad Mikail Athif Zhafir Asyura ◽

Ahmad Fauzi ◽

Fakhru Adlan Ayub

Keyword(s):

Dengue Virus ◽

Viral Replication ◽

Dengue Fever ◽

Immune Cells ◽

Viral Protein ◽

Viral Genome ◽

Antiviral Drug ◽

Ns1 Protein ◽

Humoral Immune ◽

Stimulation Of

Introduction: Dengue Virus (DENV) is the pathogen for human dengue fever and is responsible for 390 million infections per year. The viral genome produces about 10 viral protein products, one of them being NS1. The NS1 protein plays a key role in viral replication and stimulation of humoral immune cells, thus being the perfect candidate to create an effective antiviral drug or vaccine for dengue Methods: Dengue Virus (DENV) is the pathogen for human dengue fever and is responsible for 390 million infections per year. The viral genome produces about 10 viral protein products, one of them being NS1. The NS1 protein plays a key role in viral replication and stimulation of humoral immune cells, thus being the perfect candidate to create an effective antiviral drug or vaccine for dengue Conclusion: The review established promising results of using peptide-based intervention on NS1. Further in vivo and randomized controlled trials are advised to solidify the applicability and biosafety of the intervention

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NLRP3 Inflammasome Activation Enhanced by TRIM25 is Targeted by the NS1 Protein of 2009 Pandemic Influenza A Virus

Frontiers in Microbiology ◽

10.3389/fmicb.2021.778950 ◽

2021 ◽

Vol 12 ◽

Author(s):

Hong-Su Park ◽

Yao Lu ◽

Kannupriya Pandey ◽

GuanQun Liu ◽

Yan Zhou

Keyword(s):

Influenza A Virus ◽

Nlrp3 Inflammasome ◽

Influenza A ◽

Inflammatory Responses ◽

Interleukin 1 ◽

Inflammasome Activation ◽

Ns1 Protein ◽

Structural Protein ◽

Caspase 1 ◽

C Terminus

Nucleotide-binding domain and leucine-rich repeat-containing protein 3 (NLRP3) inflammasome-mediated interleukin-1 beta (IL-1β) production is one of the crucial responses in innate immunity upon infection with viruses including influenza A virus (IAV) and is modulated by both viral and host cellular proteins. Among host proteins involved, we identified tripartite motif-containing protein 25 (TRIM25) as a positive regulator of porcine NLRP3 inflammasome-mediated IL-1β production. TRIM25 achieved this function by enhancing the pro-caspase-1 interaction with apoptosis-associated speck-like protein containing caspase recruitment domain (ASC). The N-terminal RING domain, particularly residues predicted to be critical for the E3 ligase activity of TRIM25, was responsible for this enhancement. However, non-structural protein 1 (NS1) C-terminus of 2009 pandemic IAV interfered with this action by interacting with TRIM25, leading to diminished association between pro-caspase-1 and ASC. These findings demonstrate that TRIM25 promotes the IL-1β signaling, while it is repressed by IAV NS1 protein, revealing additional antagonism of the NS1 against host pro-inflammatory responses.

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Case Report: False-Positive Dengue Non-Structural Protein 1 Antigen in a Patient with COVID-19 Infection

Archive of Clinical Medicine ◽

10.21802/acm.2020.2.10 ◽

2020 ◽

Vol 26 (2) ◽

Author(s):

Yohanes Firmansyah ◽

Jessica Elizabeth ◽

Hendsun Hendsun ◽

Darren Gosal

Keyword(s):

Case Report ◽

Early Diagnosis ◽

Dengue Fever ◽

False Positive ◽

Dengue Infection ◽

Antigen Test ◽

Structural Protein ◽

Positive Events ◽

Test Strips ◽

Endemic Areas

Abstract: Early diagnosis of dengue fever and COVID-19 is made very easy due to technological advancements. The non-structural protein 1 antigen test strips are widely used in various regions; however, false-positive events have begun to be reported in the dengue-endemic areas with the COVID-19 pandemic, even though statistically non-structural protein 1 antigens are very specific to dengue infection. We reported a case of the false-positive non-structural protein 1 test in a patient with COVID-19 infection.

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Fabrication and Characterization of Simple Structure Fluidic-Based Memristor for Immunosensing of NS1 Protein Application

Biosensors ◽

10.3390/bios10100143 ◽

2020 ◽

Vol 10 (10) ◽

pp. 143

Author(s):

Nor Shahanim Mohamad Hadis ◽

Asrulnizam Abd Manaf ◽

Mohamad Faizal Abd Rahman ◽

Siti Hawa Ngalim ◽

Thean Hock Tang ◽

...

Keyword(s):

Indium Tin Oxide ◽

Sol Gel ◽

Dengue Infection ◽

Label Free ◽

Ns1 Protein ◽

Structural Protein ◽

Ratio Imaging ◽

Subsequent Capture ◽

Immense Potential

Non-structural protein 1 (NS1 protein) is becoming a commonplace biomarker for the diagnostic of early detection of dengue. In this study, we sought to use a label-free approach of detecting NS1 protein by harnessing fluidic-based memristor sensor. The sensor was fabricated using sol-gel spin coating technique, by which TiO2 thin film is coated on the surface of Indium tin oxide (ITO) and a glass substrate. The sensor was then functionalized with glycidoxypropyl-trimethoxysilane (GPTS), acting as antibody for NS1. The addition of the target NS1 formed an antibody-antigen complex which altered the physical and electrical properties in sensing region. Sensing of the sensor is incumbent upon the measurement of Off-On resistance ratio. Imaging with Field Emission Scanning Electron Microscope (FESEM) evinced the successful immobilization of the antibody and the subsequent capture of the NS1 protein by the immobilized antibody. The detection limit actualized by the developed sensor was 52 nM and the diameter of 2 mm gives the most optimal measurement. The developed sensor demonstrated an immense potential towards the development of label-free diagnostic of early dengue infection.

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Study on Clinical Spectrum, Laboratory Profile and Outcome of Dengue Fever in Adults

Mediscope ◽

10.3329/mediscope.v8i1.52202 ◽

2021 ◽

Vol 8 (1) ◽

pp. 33-39

Author(s):

Muhammad Ashraful Kabir ◽

Syed Didarul Haque ◽

Baishakhi Islam ◽

Hasan Imam

Keyword(s):

Abdominal Pain ◽

Pleural Effusion ◽

Dengue Fever ◽

Laboratory Finding ◽

Dengue Infection ◽

Febrile Illness ◽

Clinical Spectrum ◽

Structural Protein ◽

Careful Clinical Examination ◽

Laboratory Profile

Background: Dengue infection is a major health burden, which can result in mild self-limited febrile illness to highly fatal haemorrhagic disease. Infection is caused by Dengue virus, which is transmitted by the Aedes aegypti mosquito. Objective: The aim of the study was to see the clinical spectrum, laboratory profile and outcome of dengue fever in adult. Methods: This prospective observational study was carried out on 75 patients in the department of medicine of Bangabandhu Sheikh Mujib Medical University, Dhaka from 11/07/2019 to 20/10/2019. All patients above 18 years with confirmed dengue, who were either hospitalized or managed as outdoor patients with NS1 (non-structural protein) antigen and/ or IgM dengue antibody positive were included in the study. The patients with concomitant malaria, typhoid and leptospirosis were excluded from the study. Detailed history and careful clinical examination were performed on each patient. Results: In this study, all patients (100%) had fever. Among them, 70 (93.3%) was suffering from headache, 66 (88.0%) myalgia, 32 (42.7%) abdominal pain, 30 (40.0%) conjuctival suffusion, 29 (38.7%) nausea/vomiting, 27 (36.0%) skin rashes, 14 (18.7%) pleural effusion, 13 (17.3%) ascites, 13 (17.3%) retro-orbital pain, 11 (14.7%) itching, 8 (10.7%) hepatomegaly, 7 (9.3%) splenomegaly. Death occurred in 3 (4.0%) patients. Rate of cure was 58 (77.3%) and ICU admission was required in 14 (18.7%), they were ultimately cured. Conclusion: Fever associated with headache and myalgia were the most common symptoms. Other common clinical features were abdominal pain, conjunctival suffusion, nausea/vomiting, skin rashes and pleural effusion. Regarding laboratory finding, platelet count has little role in management of dengue patients. Mediscope Vol. 8, No. 1: January 2021, Page 33-39

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Salivary Detection of Dengue Virus NS1 Protein with a Label-Free Immunosensor for Early Dengue Diagnosis

Sensors ◽

10.3390/s18082641 ◽

2018 ◽

Vol 18 (8) ◽

pp. 2641 ◽

Cited By ~ 6

Author(s):

Daniel Wasik ◽

Ashok Mulchandani ◽

Marylynn Yates

Keyword(s):

Early Diagnosis ◽

Dengue Virus ◽

Dengue Infection ◽

Denv Infection ◽

Human Saliva ◽

Diagnostic Methods ◽

Label Free ◽

Ns1 Protein ◽

Structural Protein ◽

Blood Draw

Dengue virus (DENV) is a highly pathogenic, arthropod-borne virus transmitted between people by Aedes mosquitoes. Despite efforts to prevent global spread, the potential for DENV epidemics is increasing world-wide. Annually, 3.6 billion people are at risk of infection. With no licensed vaccine, early diagnosis of dengue infection is critical for clinical management and patient survival. Detection of DENV non-structural protein 1 (NS1) is a clinically accepted biomarker for the early detection of DENV infection. Unfortunately, virtually all of the laboratory and commercial DENV NS1 diagnostic methods require a blood draw for sample analysis, limiting point-of-care diagnostics and decreases patient willingness. Alternatively, NS1 in human saliva has been identified for the potential early diagnosis of DENV infection. The collection of saliva is simple, non-invasive, painless, and inexpensive, even by minimally trained personnel. In this study, we present a label-free chemiresistive immunosensor for the detection of the DENV NS1 protein utilizing a network of single-walled carbon nanotubes functionalized with anti-dengue NS1 monoclonal antibodies. NS1 was successfully detected in adulterated artificial human saliva over the range of clinically relevant concentrations with high sensitivity and selectivity. It has potential application in clinical diagnosis and the ease of collection allows for self-testing, even within the home.

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Clinical and Laboratory Profile of Dengue Fever in the Paediatric Age Group at a Tertiary Care Hospital of West Bengal - A Comparison of Two Subsequent Years

Journal of Evidence Based Medicine and Healthcare ◽

10.18410/jebmh/2021/405 ◽

2021 ◽

Vol 8 (25) ◽

pp. 2162-2167

Author(s):

Shankar Sikdar ◽

Ujjwal Bandyopadhyay ◽

Sutapa Das ◽

Mala Bhattacharya

Keyword(s):

Platelet Count ◽

Dengue Fever ◽

Dengue Infection ◽

Warning Signs ◽

Health Concern ◽

Care Hospital ◽

Age Group ◽

Structural Protein ◽

Asian Countries ◽

Paediatric Age

BACKGROUND Dengue is a major public health concern in tropical Asian countries and a most rapidly spreading mosquito borne viral disease with a 30 fold increase in global incidence over the last five decades. Dengue is among the ten leading causes of death in children ranging from 1 to 15 years of age in tropical Asian countries. Complications of dengue fever are common in children. But very limited studies are available on paediatric populations. The virus or non-structural protein (NS1) interacts with platelets and coagulation factors. A combined effect of mild disseminated intravascular coagulation, liver damage and platelet dysfunction results in bleeding in dengue fever. With this scientific knowledge background, the present study was undertaken to identify and document the changing pattern of dengue infection in paediatric age group with a special emphasis on laboratory findings of dengue cases in paediatric age group. METHODS The present descriptive study was conducted for two years in a state run paediatric referral hospital. The sample was purposive by design and consisted of patients who have been diagnosed as having dengue fever with warning signs and admitted. RESULTS Fever was typically high grade (> 103 F) and most patients presented with warning signs within 5 days of illness (64.2 % in year 2016 and 76.6 % in year 2017). Persistent vomiting and abdominal pain were the most common warning signs in both the years. Thrombocytopenia was the commonest laboratory finding. Bleeding in study subjects lead to < 50000 / cu mm platelet count. Most common bleeding was gastrointestinal bleeding (39.2 % of study subjects with platelet count < 50000 / cu mm presented with G. I bleeding). CONCLUSIONS Dengue illness comes with varied presentation. Atypical presentations can delay the diagnosis. Early recognition of warning signs keeping the atypical presentation in mind is important. KEYWORDS Dengue Fever, Paediatric Age Group, Non-Structural Protein (NS1), Thrombocytopenia

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Prevalence of dengue virus infection among population of Bhaili visiting tertiary health institution; Chhattisgarh

Asian Journal of Medical Sciences ◽

10.3126/ajms.v11i2.27345 ◽

2020 ◽

Vol 11 (2) ◽

pp. 30-34

Author(s):

Dhruba Hari Chandi

Keyword(s):

Virus Infection ◽

Early Detection ◽

Dengue Virus ◽

Dengue Fever ◽

Dengue Infection ◽

Rapid Test ◽

Age Group ◽

Immunochromatographic Test ◽

Dengue Virus Infection ◽

Health Institution

Background: Dengue fever, dengue haemorrhagic fever and dengue shock syndrome of infection is distinct clinical forms which is caused by Dengue Virus that belong to a member of the Flaviviridae family. It is most important arthropod borne viral disease that causes morbidity and mortality. Dengue virus infection is a major public health problem growing in worldwide and it is estimated about 2.5 billion people of world are at risk of this infection. In India several parts of the country it is an endemic disease. Aims and Objective: The current work is an attempt to review current perspectives of dengue infection among population of Bhilai visiting tertiary health institution. In study also we have compared the serological profiles of the dengue cases. Material and Methods: Samples received were performing retrospective analysis in the department of microbiology and process in the departmental microbiology laboratory obtaining during monsoon season. The duration of fever (in days) and other relevant clinical information were recorded from the requisition form. Rapid test for dengue as NS1Ag, IgG and IgM test were performed in accordance with the manufacturer’s instructions. The dengue NS1Ag, IgG and IgM rapid test is an in vitro immunochromatographic test (ICT) which is a onestep assay designed for the qualitative determination of dengue NS1Ag, IgG and IgM in human serum for the diagnosis dengue infection. Result: During the study period total 1308 serum samples were collected from suspected Dengue fever patients. Among 1308 samples 412(31.5%) samples were found to be positive dengue fever. In the month of August maximum number of sample were received. Out of 1308 patients with dengue suspected patients 792(60.6%) were male and 516(39.4%) were female. Among 60.6% of male 28.2% were positive and out of 39.4% of female 36.6% were positive for dengue. Age between 10-20 years old (55.83%) patients were most affected age group and 70-80 years old (8.77%) age group were least affected. Among the dengue positive patients, dengue parameter associated with thrombocytopenia was also recorded which showed that there was no significant difference between the parameters in relation to thrombocytopenia. Conclusion: Especially in developing countries like India where there are poor resources for diagnosis of dengue infection, the sensitivity of these tests is more than immunochromatographic Test (ICT). By NS1 assay early detection of dengue infection can help in early confirmation and management of this before its gets complicate. Therefore commercial available dengue NS1 antigen test kits provided additional laboratory diagnostic tool for early detection of dengue.

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Dengue infection during pregnancy in Burkina Faso: a cross-sectional study

BMC Infectious Diseases ◽

10.1186/s12879-019-4587-x ◽

2019 ◽

Vol 19 (1) ◽

Cited By ~ 1

Author(s):

Kongnimissom Apoline Sondo ◽

Adama Ouattara ◽

Eric Arnaud Diendéré ◽

Ismaèl Diallo ◽

Jacques Zoungrana ◽

...

Keyword(s):

Burkina Faso ◽

Pregnant Women ◽

Dengue Fever ◽

Neonatal Mortality ◽

Dengue Infection ◽

Rapid Test ◽

Cross Sectional Study ◽

Severe Dengue ◽

Sectional Study ◽

Cross Sectional

Abstract Background Dengue fever is prevalent in the world; in recent years, several outbreaks occurred in West Africa. It affects pregnant women. We aimed to assess the consequences of dengue fever on pregnant women and their fetuses during dengue epidemic in Burkina Faso. Methods We conducted a cross-sectional study from November 1, 2015 to January 31, 2017 in 15 public and private health facilities in Ouagadougou, using secondary data. Immunochromatographic rapid test Duo detecting specific antibodies, immunoglobin M/G and /or dengue non structural antigen1 virus was used to diagnose dengue cases. Results Out of 399 (48%) women registered during the study period, 25 (6%) were pregnant. The average age of pregnant women was 30 years, with 18 and 45 years as extremes. The main symptoms were fever (92%) and headache (92%). Nine patients (36%) had severe dengue characterized by bleeding (16%), neurological symptoms (16%) and acute respiratory distress (8%). Eight (32%) of the 25 women had early miscarriage and 8 (32%) women gave birth to viable fetuses. Among those with viable babies, 5 (20%) presented post-partum hemorrhage and 3 (12%) presented early delivery. The main fetal complications included 3 cases of acute fetal distress (12%). One case of maternal death (4%) and 4 cases of neonatal mortality (44.5%) were notified. Conclusion Dengue fever occurring during pregnancy increases maternal and neonatal mortality. Its severe complications require specific monitoring of pregnant women until delivery.

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