Topic
Dengue fever
About: Dengue fever is a research topic. Over the lifetime, 17463 publications have been published within this topic receiving 485745 citations. The topic is also known as: Dengue & dengue disease.
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TL;DR: It may be possible to apply this phenomenon to identify initial dengue serotype infection in individuals experiencing secondary d Dengue infections, thus helping to clarify the antecedents to dengu shock syndrome.
Abstract: Sequential blood samples were obtained from eight Thai children before, during and 3-5 months after hospitalization for dengue shock syndrome. All patients experienced a secondary-type antibody response as evidenced by hemagglutination-inhibition antibody responses in acute and convalescent sera. Dengue 2 viruses were recovered from two patients. In their pre-illness blood sample, all children had monotypic neutralizing antibodies; five to dengue 1, two to dengue 3 and one to dengue 4. The highest neutralizing antibody titers in acute phase and late convalescent sera were to the initial infecting virus type. This report documents for sequential dengue infections the existence of an original antigenic sin antibody response. It may be possible to apply this phenomenon to identify initial dengue serotype infection in individuals experiencing secondary dengue infections, thus helping to clarify the antecedents to dengue shock syndrome.
278 citations
TL;DR: This review compiles descriptions of atypical manifestations of dengue, such as d Dengue encephalitis, dengus myocarditis,dengue hepatitis and dengu cholecystitis.
Abstract: As the spread of dengue and dengue haemorrhagic fever is increasing, atypical manifestations are also on the rise, although they may be under reported because of lack of awareness. This review compiles descriptions of atypical manifestations of dengue, such as dengue encephalitis, dengue myocarditis, dengue hepatitis and dengue cholecystitis.
278 citations
TL;DR: Dengue is an endemic viral disease affecting tropical and subtropical regions around the world, predominantly in urban and semiurban areas and is becoming an important public health problems.
Abstract: Dengue is an endemic viral disease affecting tropical and subtropical regions around the world, predominantly in urban and semiurban areas. Dengue fever (DF) and its more serious forms, dengue hemorrhagic fever (DHF) and dengue shock syndrome (DSS), are becoming important public health problems and
277 citations
Journal Article•
TL;DR: Fc gamma RII mediate antibody-dependent enhancement of dengue virus infection in addition to Fc gamma RI.
Abstract: It is known that anti-dengue virus antibodies at subneutralizing concentrations augment dengue virus infection of IgG FcR (Fc gamma R)-positive cells, and this phenomenon is called antibody-dependent enhancement. This is caused by the uptake of dengue virus-antibody complexes by Fc gamma R. We previously reported that Fc gamma RI can mediate antibody-dependent enhancement. In this study we use an erythroleukemia cell line, K562, which has Fc gamma RII, but does not have Fc gamma RI or Fc gamma RIII, to determine if Fc gamma RII can mediate infection by dengue virus-antibody complexes. Polyclonal mouse anti-dengue virus antibody significantly augments dengue virus infection of K562 cells, whereas normal mouse serum does not. A mAb IV.3, which is specific for Fc gamma RII and is known to inhibit the binding of Ag-antibody complex to Fc gamma RII, inhibits dengue antibody-mediated augmentation of dengue virus infection. It has been reported that Fc gamma RII binds to mouse IgG1, but not to mouse IgG2a. A mouse IgG1 anti-dengue virus mAb (3H5) augments dengue virus infection of K562 cells, but a mouse IgG2a anti-dengue virus mAb (4G2) does not. 4G2 augments dengue virus infection of a human monocytic cell line, U937, which has Fc gamma RI. Based on these results we conclude that Fc gamma RII mediate antibody-dependent enhancement of dengue virus infection in addition to Fc gamma RI.
277 citations
TL;DR: These findings vis-à-vis the present endemic areas indicate that the increase in the epidemic potential of malaria and dengue transmission may be estimated at 12–27% and 31–47%, respectively, while in contrast, schistosomiasis transmission potential may be expected to exhibit a 11–17% decrease.
Abstract: Global assessment of the potential impacts of anthropogenically-induced climate change on vector-borne diseases suggests an increase in extent of the geographical areas susceptible to transmission of malarial Plasmodium parasites, dengue Flavivirus and Schistosoma worms. The transmission potential of the three associated vector-borne diseases studied is highly sensitive to climate changes on the periphery of the currently endemic areas and at higher altitudes within such areas. Our findings vis-a-vis the present endemic areas indicate that the increase in the epidemic potential of malaria and dengue transmission may be estimated at 12–27% and 31–47%, respectively, while in contrast, schistosomiasis transmission potential may be expected to exhibit a 11–17% decrease.
273 citations