scholarly journals Role of Pro-inflammatory IL-8 and Anti-inflammatory IL-10 Cytokines in Dengue Severity

2021 ◽  
Vol 53 (02) ◽  
pp. 69-75
Author(s):  
Mukesh Sharma ◽  
Keyword(s):  
Dengue Fever ◽  
Severe Disease ◽  
Dengue Infection ◽  
Fatal Outcome ◽  
Inflammatory Cells ◽  
Severe Dengue ◽  
Healthy Controls ◽  
Cytokine Levels ◽  
Ns1 Antigen ◽  
A Prospective Study

Introduction: During dengue infection, cytokine levels may increase as various cytokines are released from infected inflammatory cells. This study was conducted to measure the levels of cytokines IL-8 and IL-10 in dengue patients and correlate them with dengue severity. Material & Methods: A prospective study was conducted on febrile patients suspected of dengue fever, seeking medical care in our institute. 107 cases confirmed to have dengue fever (by NS1/ IgM ELISA) and 100 healthy individuals with age and sex matched, were included in the study. The clinical features of all patients were recorded, and cytokine levels of IL-8 and IL-10 were estimated by ELISA in the dengue patients and healthy controls. Results: Out of 400 febrile patients suspected of having dengue fever, 107 (26.75%) cases were confirmed cases, of which 56 (52.3%), 20 (18.7%), and 31 (29%) were positive for only NS1 antigen, only IgM antibody, and both NS1 and IgM, respectively. Depending on the severity of the disease, 9 (8.5%) cases were classified as severe dengue cases while 98 (91.5%) as non-severe dengue fever. Mean levels (pg/ml) for IL-8 were 281.6 ± 76.6, 150.41 ± 55.9 and 75.4 ± 49.2 in severe dengue, dengue fever, and healthy controls respectively while for IL-10, the values were 219.4 ± 150.5, 38.9 ± 67.2, and 6.6 ± 0.65 among severe dengue cases, dengue cases, and healthy controls, respectively. Conclusion: Mean level of cytokines IL-8 and IL-10 were significantly raised in severe dengue patients as compared to non-severe dengue patients and healthy controls, suggesting their role in causing severe disease and as a potential predictor for disease severity and fatal outcome.

“CLINICAL PROFILE AND PREDICTORS OF ILLNESS SEVERITY IN CHILDREN WITH DENGUE FEVER”

2021 ◽  
pp. 41-43
Author(s):  
Manoj Kumar Ram ◽  
Bankey Bihari Singh
Keyword(s):  
Dengue Fever ◽  
Pediatric Population ◽  
Severe Disease ◽  
Dengue Infection ◽  
Warning Signs ◽  
Severe Dengue ◽  
Capillary Leak ◽  
Laboratory Parameters ◽  
Ns1 Antigen ◽  
Dengue With Warning Signs

BACKGROUND & OBJECTIVES: Dengue illness has become exceedingly common over the last few years globally. Due to their unique characteristics, incidence as well as mortality is higher in pediatric population as compared to adults. This study was undertaken to study clinical pattern of dengue fever in children and to identify factors predicting a more severe disease. METHODS: We conducted this hospital based prospective study at A.N.M.M.C.H, Gaya, Bihar over 2 years from January 2016- December 2017. Children >1 month and <15 years age with fever ≥ 3 days and symptoms suggestive of Dengue infection were included and evaluated for dengue infection by testing for NS1 antigen, IgM and IgG against Dengue infection. Children were classied into 3 clinical groups: Dengue without warning signs (DWWS), Dengue with warning signs (DWS) and severe Dengue (SD) as per WHO classication. Clinical and laboratory parameters were compared in the 3 groups. RESULTS: 114 children with Dengue were studied. 62 (54.4%) were males as compared to 52 (45.6%) females. 41 (36%) had DWWS, 53 (46.5%) had DWS and 20 (17.5%) had SD. Mean age was 74.1 months (SD 18.2 months) and mean weight was 21.4 kg (S.D 5.1 kg). Common symptoms were fever (100%), myalgia (76.6%), chills (62.3%), nausea/ vomiting (63.2%) and rash (53.5%). Common signs were ushed appearance (36.8%), positive Hess test (27.2%), bleeding manifestation (13.2%) and hypotension (36.8%). Laboratory investigations revealed anaemia (18.4%), thrombocytopenia (81.6%), Leucopenia (69.3%), elevated transaminase (41.2%), abnormal RFT (5.3%). 27.1% had prolonged aPTT while 21% had prolonged PT. Nausea/vomiting, bleeding, oliguria, capillary leak and liver enlargement (>2 cm) were signicantly more common in severe dengue (p<0.05) whereas rash was commoner in non severe dengue. Lab parameters signicantly more common in SD included rising hematocrit, falling platelets, high urea/creatinine/ALT and hypoalbuminemia & hypocholesterolemia. CONCLUSIONS: DF affects children irrespective of age. Symptoms more common in SD were nausea/vomiting, bleeding and decreased urine. Signs commoner in SD were features of capillary leak and hepatomegaly (>2 cm). Rising hematocrit, falling platelets, high urea, creatinine and ALT but hypoalbuminemia and low cholesterol were found to be statistically signicant laboratory parameters associated with SD.

scholarly journals Effect of Prior Symptomatic Dengue Infection on Dengue Haemorrhagic Fever (DHF) in Children

2021 ◽  
Vol 2021 ◽  
pp. 1-5
Author(s):  
Randula Ranawaka ◽  
Chamara Jayamanne ◽  
Kavinda Dayasiri ◽  
Dinuka Samaranayake ◽  
Udara Sandakelum ◽  
...  
Keyword(s):  
Dengue Fever ◽  
Past History ◽  
Secondary Infection ◽  
Severe Disease ◽  
Dengue Infection ◽  
Dengue Shock Syndrome ◽  
Dengue Haemorrhagic Fever ◽  
Severe Dengue ◽  
Haemorrhagic Fever ◽  
History Of

Pathogenesis of dengue haemorrhagic fever is not fully understood, but it is thought that there is antibody enhancement during the secondary infection, which causes severe dengue haemorrhagic fever (DHF). Therefore, patients who have DHF should have a documented history of symptomatic dengue infection in the past. A retrospective descriptive-analytical study was conducted at the University Paediatric Unit at Lady Ridgeway Hospital for Children, Colombo, Sri Lanka. All children who had fulfilled the criteria for DHF admitted to the unit from April 2018 to September 2018 were recruited into the study. Relevant data were collected from bed head tickets. One hundred and eighty-four children were included in the final analysis. Thirty-three (17.9%) had a past history of documented symptomatic dengue infection, while 82.1% did not have a documented dengue infection. Twelve patients had dengue shock syndrome, and none of them had previously documented symptomatic dengue fever. Dextran was used in 96 patients in the critical phase. Twelve (42%) patients with past documented symptomatic dengue fever needed dextran while 84 (54.9%) patients without a documented past history of dengue fever needed dextran. In our clinical observation, we noticed that children with DHF mostly did not have a documented symptomatic prior dengue infection, while those with a documented symptomatic prior infection had a milder subsequent illness. In fact, the majority (82.1%) of patients with DHF did not have documented previous symptomatic dengue infection. It was also observed that the clinical course of subsequent dengue infection was less severe in patients with previously documented symptomatic dengue fever. This finding should be further evaluated in a larger scale study minimizing the all-confounding factors. This fact is more important in selecting recipients for vaccines against the dengue virus, which are supposed to produce immunity against the virus without causing the severe disease.

scholarly journals A study of various hepatic manifestations in dengue fever and their correlation with severity of dengue fever

2020 ◽  
Vol 7 (3) ◽  
pp. 527
Author(s):  
Shravya Dhanwada ◽  
Samba Siva Reddy R.
Keyword(s):  
Dengue Fever ◽  
Complete Blood Count ◽  
Dengue Infection ◽  
Liver Function Tests ◽  
Warning Signs ◽  
Severe Dengue ◽  
Serum Total Bilirubin ◽  
Hepatic Involvement ◽  
Elevated Liver Enzymes ◽  
A Prospective Study

Background: Hepatic involvement in Dengue is known with protean of manifestations ranging from hepatomegaly, elevated liver enzymes to fulminant hepatic failure. Aim of the study was to study the hepatic manifestations in children with dengue illness.Methods: This is a prospective Study with 60 Patients hospitalized with Dengue infection (Seropositive for Dengue). Dengue Seropositive patients are selected and examined for Hepatomegaly and Jaundice and subjected to complete blood count and Liver function tests were analysed.Results: Of 60 serologically confirmed cases hospitalized with dengue, were classified into (i)(DF), (ii) DHF I (iii) DHF II (iv) DHF III and (v) DHF IV.  In our study, upon 60 seropositive cases were reported at our hospital during the study period of which 18 were DF, 12 were DHF I, 15 were DHFII, 8 were DHF III and 7 were DHF IV respectively. The Hematocrit levels were raised 20% from the baseline in four classes of Dengue and not raised in DF. Most commonly occurred in age group of 5-7 years. Hepatomegaly was the commonest clinical sign seen. Thrombocytopenia was seen in 88% of all cases. Serum total bilirubin was raised in 10% of subjects with severe dengue infection in DHF III and DHF IV. Serum SGOT and SGPT was raised in 63.3% and 56.7% of patients with dengue of all classes including DF respectively. Thrombocytopenia occurred in 75% of patients with dengue fever, 98% with warning signs and 100% in severe dengue.Conclusions: In developing country like India, incidence of dengue outbreaks is increasing. Hepatic involvement of varying degrees have been reported. As hepatic dysfunction in dengue is transient and reversible, early identification of the same would help to reduce life threatening complications. The role of hepato protective drugs in reducing morbidity and mortality should be analysed by further studies. 

FACTORS PREDICTING SEVERITY OF ILLNESS IN DENGUE FEVER: AN OBSERVATIONAL STUDY

2021 ◽  
pp. 54-55
Author(s):  
Abhay John Gray ◽  
Sheela Mathew ◽  
Gayathri R ◽  
Akhila Arya ◽  
Aswathy MA ◽  
...  
Keyword(s):  
Dengue Fever ◽  
Ldl Cholesterol ◽  
Severe Disease ◽  
Dengue Infection ◽  
Clinical Manifestations ◽  
Severity Of Illness ◽  
Warning Signs ◽  
Severe Dengue ◽  
Detailed History ◽  
Dengue With Warning Signs

Introduction: Dengue is a systemic viral infection caused by the virus from genus Flaviviridae. Dengue infection has got a wide clinical spectrum that includes both severe and non-severe clinical manifestations. The group progressing from non-severe to severe disease is difcult to dene. Early detection and access to proper medical care signicantly lower fatality rates and would help to reduce the burden of hospital stay and economy loss. Objectives: To study the inammatory markers predicting the severity of dengue infection. Methods: 250 diagnosed patients were evaluated with detailed history, physical examination and blood investigations. Inammatory markers associated with severity of dengue were studied. Observations and conclusions- 97 patients (39%) had dengue without warning signs, 62(25%) had dengue with warning signs, 63(25%) had severe dengue and 28(11%) had expanded dengue. Low CRP, ESR, HDL and LDL cholesterol were observed in dengue fever, without any statistical signicance. Ferritin levels more than 1000 and triglyceride more than 200 was signicantly associated with severity of dengue.

scholarly journals Multi-Tissue Transcriptomic-Informed In Silico Investigation of Drugs for the Treatment of Dengue Fever Disease

Viruses ◽  
2021 ◽  
Vol 13 (8) ◽  
pp. 1540
Author(s):  
Beatriz Sierra ◽  
Ana Cristina Magalhães ◽  
Daniel Soares ◽  
Bruno Cavadas ◽  
Ana B. Perez ◽  
...  
Keyword(s):  
Receptor Antagonist ◽  
Dengue Fever ◽  
In Silico ◽  
Serotonin Receptor ◽  
Neglected Tropical Diseases ◽  
Dengue Infection ◽  
Severe Dengue ◽  
Functional Evaluation ◽  
Atpase Inhibitor ◽  
Serotonin Receptor Antagonist

Transcriptomics, proteomics and pathogen-host interactomics data are being explored for the in silico–informed selection of drugs, prior to their functional evaluation. The effectiveness of this kind of strategy has been put to the test in the current COVID-19 pandemic, and it has been paying off, leading to a few drugs being rapidly repurposed as treatment against SARS-CoV-2 infection. Several neglected tropical diseases, for which treatment remains unavailable, would benefit from informed in silico investigations of drugs, as performed in this work for Dengue fever disease. We analyzed transcriptomic data in the key tissues of liver, spleen and blood profiles and verified that despite transcriptomic differences due to tissue specialization, the common mechanisms of action, “Adrenergic receptor antagonist”, “ATPase inhibitor”, “NF-kB pathway inhibitor” and “Serotonin receptor antagonist”, were identified as druggable (e.g., oxprenolol, digoxin, auranofin and palonosetron, respectively) to oppose the effects of severe Dengue infection in these tissues. These are good candidates for future functional evaluation and clinical trials.

scholarly journals Clinical profile of dengue fever in children: analysis of 2017 outbreak from Central Kerala, India

2018 ◽  
Vol 5 (6) ◽  
pp. 2265 ◽  
Author(s):  
Senthil Kumar K. ◽  
Rajendran N. K. ◽  
Ajith Brabhukumar C.
Keyword(s):  
Dengue Fever ◽  
Dengue Infection ◽  
Tertiary Care ◽  
Hemorrhagic Fever ◽  
Warning Signs ◽  
Clinical Profile ◽  
Severe Dengue ◽  
High Morbidity ◽  
Care Hospital ◽  
High Grade Fever

Background: In India, dengue epidemics are becoming more frequent (WHO, 2008). The majority of dengue viral infections are self-limiting, but complications may cause high morbidity and mortality. The objective of this study is to assess the clinical profile of the dengue infection in children less than 15 years of age and to evaluate the outcomes of dengue fever from March 2017 to July 2017 at the Pediatric Department of Karuna Medical College, the tertiary care hospital in Palakkad.Methods: In this retrospective study, medical records were reviewed and analyzed. Patients with suspected dengue infection were classified further into 2 groups, Dengue fever (probable dengue, dengue with warning signs) and ‘Severe Dengue’ (dengue hemorrhagic fever and/or dengue shock syndrome (DHF/DSS) according to WHO.Results: A total of 77 cases were classified into 67 (87%) non-severe and 10 (13%) severe dengue cases. The most common age of presentation was above 10 yrs. The mean age of admission was 8.9 yrs. The most common presenting symptom was fever seen in 93% followed by vomiting in 68%. Elevation in Aspartate transaminase (SGOT) and thrombocytopenia were found in 32.4 %.Conclusions: High grade fever, vomiting, abdominal pain and skin rash with normal or low platelet count were the presenting features. Early diagnosis, monitoring and prompt supportive management can reduce mortality.

scholarly journals Clinicohaematological profile of dengue in children: a hospital based study

2017 ◽  
Vol 4 (4) ◽  
pp. 1340 ◽  
Author(s):  
Irshad Abdul Majeed ◽  
K. Shreedhara Avabratha ◽  
Lokesha R. Gowda ◽  
Sadia Syeda
Keyword(s):  
Dengue Fever ◽  
Early Recognition ◽  
Tertiary Care ◽  
Clinical Manifestations ◽  
Haematological Parameters ◽  
Severe Dengue ◽  
Clinical Feature ◽  
Igm Elisa ◽  
Ns1 Antigen ◽  
Atypical Presentations

Background: Dengue fever is one of the most common arbo virus mediated outbreaks, being reported from different parts of the world. Now as the outbreaks are hitting different geographic locations, different clinical manifestations are being reported recently. The aim of this study is to document varied clinical manifestations and haematological parameters of dengue patients in a tertiary care centre.Methods: A total 130 cases of any of NS1 antigen, IgM card test positive or IgM ELISA positive dengue patients were included in this observational study. Clinical and haematological parameters were noted and analysed statistically.Results: Most common clinical feature was fever (100%) followed by headache (51.5%). Atypical features like seizures due to encephalitis was seen in a child with dengue. Seizure were present in 1.5% of cases, two children died due to severe dengue with shock and multi organ failure. In our study 26.92% of patients had thrombocytopenia. The mean Hb was 12.86 g/dl and platelet count was 104202/mm3.Conclusions: Fever and headache are the main features of dengue. However, one should be aware of different atypical presentations of dengue fever to diagnose and intervene timely. Early recognition of complication and timely intervention are required in the management of dengue cases. 

scholarly journals Increased frequencies of CD4+CD25high regulatory T cells in acute dengue infection

2007 ◽  
Vol 204 (5) ◽  
pp. 979-985 ◽  
Author(s):  
Kerstin Lühn ◽  
Cameron P. Simmons ◽  
Edward Moran ◽  
Nguyen Thi Phuong Dung ◽  
Tran Nguyen Bich Chau ◽  
...  
Keyword(s):  
T Cells ◽  
T Cell ◽  
Regulatory T Cells ◽  
Severe Disease ◽  
Acute Infection ◽  
Dengue Infection ◽  
Hemorrhagic Fever ◽  
Severe Dengue ◽  
Effector T Cell ◽  
Cell Effector

Dengue virus infection is an increasingly important tropical disease, causing 100 million cases each year. Symptoms range from mild febrile illness to severe hemorrhagic fever. The pathogenesis is incompletely understood, but immunopathology is thought to play a part, with antibody-dependent enhancement and massive immune activation of T cells and monocytes/macrophages leading to a disproportionate production of proinflammatory cytokines. We sought to investigate whether a defective population of regulatory T cells (T reg cells) could be contributing to immunopathology in severe dengue disease. CD4+CD25highFoxP3+ T reg cells of patients with acute dengue infection of different severities showed a conventional phenotype. Unexpectedly, their capacity to suppress T cell proliferation and to secrete interleukin-10 was not altered. Moreover, T reg cells suppressed the production of vasoactive cytokines after dengue-specific stimulation. Furthermore, T reg cell frequencies and also T reg cell/effector T cell ratios were increased in patients with acute infection. A strong indication that a relative rise of T reg cell/effector T cell ratios is beneficial for disease outcome comes from patients with mild disease in which this ratio is significantly increased (P &lt; 0.0001) in contrast to severe cases (P = 0.2145). We conclude that although T reg cells expand and function normally in acute dengue infection, their relative frequencies are insufficient to control the immunopathology of severe disease.

scholarly journals Epidemiological and Clinical Features of Dengue Infection in Adults in the 2017 Outbreak in Vietnam

2019 ◽  
Vol 2019 ◽  
pp. 1-6 ◽  
Author(s):  
Bui Vu Huy ◽  
Le Nguyen Minh Hoa ◽  
Dang Thi Thuy ◽  
Nguyen Van Kinh ◽  
Ta Thi Dieu Ngan ◽  
...  
Keyword(s):  
Elderly Patients ◽  
Dengue Fever ◽  
Clinical Features ◽  
Dengue Infection ◽  
Clinical Manifestations ◽  
Warning Signs ◽  
Severe Dengue ◽  
Severe Bleeding ◽  
Cross Sectional ◽  
Number Of Patients

Purpose. The clinical features and laboratory results of dengue-infected adult patients admitted to the hospital during the 2017 outbreak were analyzed in this study. Method. This is a cross-sectional study. 2922 patients aged 18 years or more with dengue fever in National Hospital for Tropical Diseases (NHTD) in the North and Hospital for Tropical Disease (HTD) in the South of Vietnam were recruited in this study. Result. Patients were admitted in the hospital around the year and concentrated from August to December, in 53/63 (84.0%) provinces in Vietnam, and patients in all ages were affected. The number of patients with dengue fever was 1675 (57.3%), dengue with warning signs 914 (31.3%), and severe dengue 333 (11.4%), respectively. Among patients with severe dengue, severe plasma leakage and dengue shock account for 238 (8.1%), severe organ impairment 73 (2.5%), and severe bleeding 22 (0.75%). The rate of mortality was 0.8%, and the outcome of dengue patients is worse in the elderly and people with underlying diseases. Conclusion. The 2017 dengue outbreak occurred in a larger scale than in the previous years in terms of time, location, and number of patients. More elderly patients were infected by dengue in this outbreak, and this may contribute to the mortality rate. Clinical manifestations of dengue patients in Southern Vietnam are more typical than the northern, but the rate of severe dengue is not different. The mortality risk and underlying conditions associated with dengue-infected elderly patients are worthy of further investigations in the future.

scholarly journals Evaluation of Six Commercial Point-of-Care Tests for Diagnosis of Acute Dengue Infections: the Need for Combining NS1 Antigen and IgM/IgG Antibody Detection To Achieve Acceptable Levels of Accuracy

2011 ◽  
Vol 18 (12) ◽  
pp. 2095-2101 ◽  
Author(s):  
Stuart D. Blacksell ◽  
Richard G. Jarman ◽  
Mark S. Bailey ◽  
Ampai Tanganuchitcharnchai ◽  
Kemajittra Jenjaroen ◽  
...  
Keyword(s):  
Dengue Fever ◽  
Sensitivity And Specificity ◽  
Dengue Infection ◽  
Antibody Test ◽  
Antibody Detection ◽  
Sample Collection ◽  
Igg Antibody ◽  
Igm Antibody ◽  
Ns1 Antigen ◽  
Antibody Tests

ABSTRACTSix assays were evaluated in this study to determine their suitability for the diagnosis of acute dengue infection using samples from 259 Sri Lankan patients with acute fevers (99 confirmed dengue cases and 160 patients with other confirmed acute febrile illnesses): (i) the Merlin dengue fever IgG & IgM combo device (Merlin), (ii) the Standard Diagnostics Dengue Duo nonstructural 1 (NS1) antigen and IgG/IgM combo device (Standard Diagnostics, South Korea), (iii) the Biosynex Immunoquick dengue fever IgG and IgM (Biosynex, France) assay, (iv) the Bio-Rad NS1 antigen strip (Bio-Rad, France), (v) the Panbio Dengue Duo IgG/IgM Cassette (Inverness, Australia), and (vi) the Panbio dengue NS1 antigen strip (Inverness, Australia). The median number of days of fever prior to admission sample collection was 5 days (interquartile range, 3 to 7 days). Sensitivity and specificity of the NS1 antigen tests ranged from 49 to 59% and from 93 to 99%, respectively, and sensitivity and sensitivity of the IgM antibody test ranged from 71 to 80% and from 46 to 90%, respectively. Combining the NS1 antigen and IgM antibody results from the Standard Diagnostics Dengue Duo test gave the best compromise of sensitivity and specificity (93% and 89%, respectively) and provided the best sensitivity in patients presenting at different times after fever onset. The Merlin IgM/IgG antibody tests correctly classified 64% and 86% of the primary and secondary dengue infection cases, respectively, and the Standard Diagnostics IgM/IgG antibody tests correctly classified 71% and 83% of the primary and secondary dengue infection cases, respectively. This study provides strong evidence of the value of combining dengue antigen- and antibody-based test results in the rapid diagnostic test (RDT) format for the acute diagnosis of dengue.

Sign in / Sign up

Export Citation Format

Share Document