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En present with fever, rash, headache, and myalgia but can also develop into much more serious cases of Dengue Hemorrhagic Fever and Dengue Shock Syndrome (DHF/DSS). Cases of DHF/DSS are increasing rapidly as the virus increases in geographic range, with approximately 25-37 of symptomatic cases of denguePage 1 of(page number not for citation purposes)Virology Journal 2009, 6:http://www.virologyj.
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En present with fever, rash, headache, and myalgia but can also develop into much more serious cases of Dengue Hemorrhagic Fever and Dengue Shock Syndrome (DHF/DSS). Cases of DHF/DSS are increasing rapidly as the virus increases in geographic range, with approximately 25-37 of symptomatic cases of denguePage 1 of(page number not for citation purposes)Virology Journal 2009, 6:http://www.virologyj.
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Nce in Hawaii, Cuba, and Thailand[9] shows populations with previous exposure to the dengue virus are at an increased risk for DHF/DSS. Also infants born to dengue immune mothers were shown to be at an increased risk for DHF/DSS[10]. It's not clear how antibodies enhance viral infection. Onehypothesis suggests that non-neutralizing antibodies direct active virions to permissive cells in the immune
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Nce in Hawaii, Cuba, and Thailand[9] shows populations with previous exposure to the dengue virus are at an increased risk for DHF/DSS. Also infants born to dengue immune mothers were shown to be at an increased risk for DHF/DSS[10]. It's not clear how antibodies enhance viral infection. Onehypothesis suggests that non-neutralizing antibodies direct active virions to permissive cells in the immune
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Izes DHF/DSS are regulated by Complement proteins and associated anaphylatoxins. These three systems both interact and reinforce each other to create a potentially life threatening situation during a Dengue infection.Antibodies Antibody Dependent Enhancement (ADE) has been proposed to be a mechanism by which the immune system may enhance viral pathogenesis[7]. When monkeys were passively immunized
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Izes DHF/DSS are regulated by Complement proteins and associated anaphylatoxins. These three systems both interact and reinforce each other to create a potentially life threatening situation during a Dengue infection.Antibodies Antibody Dependent Enhancement (ADE) has been proposed to be a mechanism by which the immune system may enhance viral pathogenesis[7]. When monkeys were passively immunized
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Nce in Hawaii, Cuba, and Thailand[9] shows populations with previous exposure to the dengue virus are at an increased risk for DHF/DSS. Also infants born to dengue immune mothers were shown to be at an increased risk for DHF/DSS[10]. It's not clear how antibodies enhance viral infection. Onehypothesis suggests that non-neutralizing antibodies direct active virions to permissive cells in the immune
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At typically binds to IgG and is composed of an chain for domain recognition, an ITAM (immunoreceptor tyrosine based activation motif), and a chain that is responsible for signal transduction. It is thought that IgM does not play a direct role in ADE and instead contributes to disease pathogenesis through activation of complement receptors[13]. IgM antibody enhancement was abrogated when C3R is
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Cquire the disease the first time (primary infections) are often asymptomatic and will generate immunity to homologous strains of the virus; however, ninety percent of DHF/ DSS cases come from a second exposure (secondary infection) to a heterologus strain of dengue[5]. Patients with a secondary heterotypic infection are at least 40-80 times more likely to develop DHF/DSS as patients with a primar
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The antibodies are involved in release of complement and anaphylatoxins which can cause or exacerbate DHF/DSS. These systems are inextricable and strongly associated with dengue pathogenesis.Dengue Background and SignificanceThe Dengue Virus is a member of the family Flaviviridae along with other noted viruses Yellow Fever, West Nile, and Japanese Encephalitis. Dengue is a positive stranded RNA ar