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dengue coagulation

Arthi Sridhar, B M Sunil Kumar, Aarathi Rau, A T K Rau
Dengue Fever (DF) may evolve into two life threatening forms-Dengue Hemorrhagic Fever (DHF) and Dengue Shock Syndrome (DSS). DHF is associated with increased vascular permeability and plasma leakage causing thrombocytopenia and loss of clotting factors into the third space and may result in bleeding initially due to thrombocytopenia and later due to disseminated intravascular coagulation (DIC), often as a terminal event. Prompt recognition and treatment of minor bleeds in DF children with incipient DIC with component therapy may be associated with improved survival while failure to do so is usually catastrophic...
June 2017: Indian Journal of Hematology & Blood Transfusion
Bashir Abdrhman Bashir, Osman Khalaf Allah Saeed
THE COAGULATION SYSTEM: Abnormalities in natural physiologic anticoagulants are observed in dengue infection. Laboratory values such as protein C (PC), protein S (PS), and antithrombin (AT) indicate this problem on the coagulation system in dengue. Recently, an interrelationship between dengue and the levels of natural anticoagulants has been observed. OBJECTIVE: The study conducted to find out the effect of dengue on the natural anticoagulant proteins. METHODS: A case-control study was conducted in Port Sudan Teaching Hospital from February 2013 to June 2014 for 334 cases of dengue caused by dengue virus, 217 (65%) males and 117 (35%) were females along with 101 cases of control 64 (63...
April 2017: International Journal of Health Sciences
Dyshelly N Pascapurnama, Hannah K M Labayo, Isolde Dapat, Divya D Nagarajegowda, Jingge Zhao, Jing Zhang, Osamu Yamada, Haruhisa Kikuchi, Shinichi Egawa, Yoshiteru Oshima, Haorile Chagan-Yasutan, Toshio Hattori
Osteopontin (OPN) is a multifunctional matricellular protein produced by a broad range of cells including osteoclasts, macrophages, T cells, endothelial cells, and vascular smooth muscle cells. OPN modulates various physiological and pathological events such as inflammation, wound healing, and bone formation and remodeling. Dengue virus (DENV) infection causes an increase in plasma OPN levels, which is correlated with the severity of symptoms and coagulation abnormalities. DENV infection also induces OPN gene expression in human macrophages...
2017: Frontiers in Microbiology
Felipe Maia de Toledo Piza, Thiago Domingos Corrêa, Alexandre Rodrigues Marra, João Carlos Campos Guerra, Roseny Dos Reis Rodrigues, Andrea Aparecida Rocco Villarinho, Valdir Fernandes de Aranda, Sandra Christina Pereira Lima Shiramizo, Maria Roza de Jesus de Lima, Esper Georges Kallas, Alexandre Biasi Cavalcanti
BACKGROUND: Dengue virus infection (DVI) is a prevalent and potentially fatal viral disease associated with coagulopathy. So far, the coagulation profile of DVI patients with thrombocytopenia has not been assessed through a viscoelastic test such as rotational thromboelastometry. We aimed to describe the prevalence and characteristics of coagulation abnormalities in dengue fever outpatients with thrombocytopenia, addressed by both rotational thromboelastometry and conventional coagulation tests...
January 19, 2017: BMC Infectious Diseases
Chih-Cheng Hsieh, Cong-Tat Cia, Jen-Chieh Lee, Junne-Ming Sung, Nan-Yao Lee, Po-Lin Chen, Te-Hui Kuo, Jo-Yen Chao, Wen-Chien Ko
BACKGROUND: There was a large dengue outbreak in Taiwan in 2015, in which the ages of the affected individuals were higher than those in other countries. The aim of this study was to explore the characteristics and prognostic factors for adults with severe dengue in intensive care units (ICUs). METHODS: All adults admitted to ICUs with dengue virus infection (DENV) at a medical center from July 1, 2015 to December 31, 2015 were enrolled. DENV was diagnosed by the presence of serum NS1 antigen, IgM antibodies to dengue virus, or dengue virus RNA by real-time reverse transcriptase polymerase chain reaction...
January 2017: PLoS Neglected Tropical Diseases
Federico Perdomo-Celis, Doris M Salgado, Carlos F Narváez
Dengue is a major public health problem in tropical regions around the world. Viral and immune host factors determine the clinical courses of the infection. We analyzed the dynamics of viremia (by real-time polymerase chain reactions), antigenemia (through detection of the viral non-structural protein [NS]-1 by enzyme-linked immunosorbent assays) and the frequency of virus-infected peripheral blood mononuclear cells (PBMCs) (by multiparametric flow cytometry) in children with primary or secondary dengue virus (DENV) infection in mild to severe cases...
March 2017: Acta Tropica
Falguni Parikh
Febrile patient with thrombocytopenia is commonly encountered by physicians especially during monsoon and perimonsoon period. Infections with protozoa, bacteria and viruses can cause thrombocytopenia with or without disseminated intravascular coagulation. Commonly dengue, malaria, scrub typhus and other rickettsial infections, meningococci, leptospira and certain viral infections present as fever with thrombocytopenia. Occasionally these patients can go on to develop a stormy course with multiorgan dysfunction requiring intensive care unit admission associated with high morbidity and mortality...
February 2016: Journal of the Association of Physicians of India
M L Patel, Rekha Sachan, Amita Verma, Radhey Shyam
Symmetrical peripheral gangrene (SPG) is a rare clinical entity, infective, and noninfective both types of etiologies are responsible. The basic underlying pathology in SPG is being disseminated intravascular coagulation and carries a high mortality. Here, we describe a 52-year-old male with dengue fever, who developed bilateral symmetrical dry gangrene of both hand and feet. His dengue IgM antibody was positive. All the peripheral pulses of the affected limbs were palpable. Color Doppler study of upper and lower limb vessels showed normal flow...
2016: Advanced Biomedical Research
Elzinandes Leal de Azeredo, Victor Edgar Fiestas Solórzano, Débora Batista de Oliveira, Cintia Ferreira Marinho, Luiz José de Souza, Rivaldo Venâncio da Cunha, Paulo Vieira Damasco, Claire Fernandes Kubelka, Luzia Maria de-Oliveira-Pinto
Tissue Factor (TF) is the initiator of coagulation and Tissue Factor Inhibitor (TFPI) is the physiological inhibitor of the TF/FVIIa complex. Circulating levels of TF and TFPI were quantified in dengue patients and the relationships with disease severity and infecting serotype analysed. A significant decrease in TF and TPFI plasma levels was observed in mild DF patients compared with severe dengue. Furthermore, both factors were associated with haemorrhagic manifestations. Finally, TF levels were significantly increased in DENV-1/2 infected patients as compared with DENV-4...
January 2017: Microbes and Infection
Jianshe Lang, Daniel Vera, Yichen Cheng, Hengli Tang
The development of dengue antivirals and vaccine has been hampered by the incomplete understanding of molecular mechanisms of dengue virus (DENV) infection and pathology, partly due to the limited suitable cell culture or animal models that can capture the comprehensive cellular changes induced by DENV. In this study, we differentiated human pluripotent stem cells (hPSCs) into hepatocytes, one of the target cells of DENV, to investigate various aspects of DENV-hepatocyte interaction. hPSC-derived hepatocyte-like cells (HLCs) supported persistent and productive DENV infection...
September 13, 2016: Stem Cell Reports
M M Arora, K B Mishra, Velu Nair, J R Bhardwaj, Rajvir Bhalwar, B L Somani
Alterations in coagulation profile viz. platelet count, prothrombin time (PT), partial thromboplastin time with kaolin (PTTK), thrombin time (TT) and fibrinogen were studied in 96 patients (73 males and 23 females) of acute infections. Fibrin/fibrinogen degradation products (FDP) level >25µg fibrinogen equivalent unit (FEU)/ml along-with D-dimer >1.0µg FEU/ml was considered criteria for diagnosis of disseminated intravascular coagulation (DIC). Normal values were established using plasma from 12 healthy voluntary blood donors...
January 2002: Medical Journal, Armed Forces India
Marcela Mercado, Jorge Acosta-Reyes, Edgar Parra, Lissethe Pardo, Angélica Rico, Alfonso Campo, Edgar Navarro, Diego Viasus
We report clinical features and histopathological findings in fatal cases with dengue (DENV) and chikungunya (CHIKV) co-infection identified at the Colombian National Institute of Health between September 2014 and October 2015. Seven such cases were documented. Dengue serotype 2 virus was identified in six cases. All patients were adults and comorbidities were present in four. Fever, arthralgia or myalgia was present in all cases. The frequency of rash, haemorrhage, oedema, and gastrointestinal symptoms was variable...
June 2, 2016: Euro Surveillance: Bulletin Européen sur les Maladies Transmissibles, European Communicable Disease Bulletin
Gladys Corrêa, Carolina de A Lindenberg, Caroline Fernandes-Santos, Mariana Gandini, Fabienne Petitinga Paiva, Robson Coutinho-Silva, Claire F Kubelka
Purinergic signaling has a crucial role in intracellular pathogen elimination. The P2X7 purinergic receptor (P2X7R), once activated by ATP, leads to pro-inflammatory responses including reactive oxygen species production. ATP can be released by injured cells, as endogenous danger signals. Dengue fever may evolve to a severe disease, leading to hypovolemic shock and coagulation dysfunctions as a result of a cytokine storm. Our aim was to evaluate the role of P2X7R activation during Dengue virus (DENV) infection...
July 2016: Immunobiology
Tooba Naz Shamsi, Romana Parveen, Sadaf Fatima
This review describes Protease Inhibitors (PIs) which target or inhibit proteases, protein digesting enzymes. These proteases play a crucial task in many biological events including digestion, blood coagulation, apoptosis etc. Regardless of their crucial roles, they need to be checked regularly by PIs as their excess may possibly damage host organism. On basis of amino acid composition of PIs where Protease-PI enzymatic reactions occur i.e. serine, cysteine, and aspartic acid, they are classified. Nowadays, various PIs are being worked upon to fight various parasitic or viral diseases including malaria, schistosomiasis, colds, flu', dengue etc...
October 2016: International Journal of Biological Macromolecules
Souren Pal, Kaushik Sen, Nirendra Mohan Biswas, Anirban Ghosal, S K Rousan Jaman, K Y Yashavantha Kumar
BACKGROUND AND OBJECTIVE: Dengue, an acute viral disease, transmitted by Aedes mosquitoes, has a variable clinical spectrum ranging from asymptomatic infection to life-threatening dengue hemorrhagic fever and dengue shock syndrome. However, neurological complications, in general, are unusual but have been observed more frequently in the recent past, and some studies highlighted varied neurological complications during the course of illness. Although dengue is classically considered a nonneurotropic virus, there is increasing evidence for dengue viral neurotropism...
January 2016: Journal of Neurosciences in Rural Practice
Preeti Thakur, Anita Chakravarti, Sunita Aggarwal, Beena Uppal, Preena Bhalla
The immune pathogenesis of dengue involves antibody production, B cell and T cell response and various pro-inflammatory and anti-inflammatory cytokines. VEGF, a potent permeability enhancing cytokine, is thought to play a pivotal role in mediating plasma leakage in DHF. It is a member of growing family of related proteins that includes VEGF B, VEGF C, VEGF D and placental growth factor. It promotes angiogenesis and vascular integrity. In addition to its role in promoting endothelial permeability & proliferation, it may contribute to inflammation and coagulation...
March 2016: Virusdisease
Dang My Nhi, Nguyen Tien Huy, Kaname Ohyama, Daisuke Kimura, Nguyen Thi Phuong Lan, Leo Uchida, Nguyen Van Thuong, Cao Thi My Nhon, Le Hong Phuc, Nguyen Thi Mai, Shusaku Mizukami, Lam Quoc Bao, Nguyen Ngoc Doan, Nguyen Van Thanh Binh, Luong Chan Quang, Juntra Karbwang, Katsuyuki Yui, Kouichi Morita, Vu Thi Que Huong, Kenji Hirayama
BACKGROUND: Severe dengue with severe plasma leakage (SD-SPL) is the most frequent of dengue severe form. Plasma biomarkers for early predictive diagnosis of SD-SPL are required in the primary clinics for the prevention of dengue death. METHODOLOGY: Among 63 confirmed dengue pediatric patients recruited, hospital based longitudinal study detected six SD-SPL and ten dengue with warning sign (DWS). To identify the specific proteins increased or decreased in the SD-SPL plasma obtained 6-48 hours before the shock compared with the DWS, the isobaric tags for relative and absolute quantification (iTRAQ) technology was performed using four patients each group...
February 2016: PLoS Neglected Tropical Diseases
Limei Tan, Junping Wang, Fansen Zeng, Yong Zhang, Chunxiao Fang, Chuan Nie, Yi Xu, Jie Yang
OBJECTIVE: To explore the clinical manifestations and laboratory examination characteristics of neonatal dengue fever. METHOD: A retrospective analysis of 12 cases of neonatal dengue fever treated in the Guangdong Women and Children's Hospital and Guangzhou Women and Children's Medical Center was conducted, and related literature was reviewed. RESULT: Twelve cases of neonatal dengue fever included 9 males and 3 females; their age was 30 min after birth to 29 d, the age of onset was 30 min-24 d...
December 2015: Zhonghua Er Ke za Zhi. Chinese Journal of Pediatrics
B T Nair, R K Sanjeev, S B Tarikjot
We report the case of a 10-year-old male who developed gangrene of his fingers and toes following severe dengue fever complicated by disseminated intravascular coagulation (DIC). Child developed bilateral dry gangrene of fingers and toes. All the peripheral pulses of the affected limbs were palpable. The child had no history of taking B-blockers, ergot alkaloids or other related medications. Color Doppler of peripheral arterial and venous systems of all limbs indicated normal flow. Blood was positive for D-dimers and fibrin degradation products...
January 2016: Nigerian Journal of Clinical Practice
Yung-Chun Chuang, Jessica Lin, Yee-Shin Lin, Shuying Wang, Trai-Ming Yeh
Dengue virus (DENV) infection is the most common mosquito-borne viral disease, and it can cause life-threatening dengue hemorrhagic fever (DHF) and dengue shock syndrome (DSS). Abnormal activation of the coagulation and fibrinolysis system is one of the hallmarks of DHF/DSS. However, the mechanism underlying hemorrhage in DHF/DSS remains elusive. In previous studies, plasminogen (Plg) cross-reactive Abs, which can recognize DENV nonstructural protein (NS) 1, have been found in dengue patients. However, it is unclear whether these Abs are indeed induced by DENV NS1...
February 1, 2016: Journal of Immunology: Official Journal of the American Association of Immunologists
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