scholarly journals Neutralizing activities of human immunoglobulin derived from donors in Japan against mosquito-borne flaviviruses, Japanese encephalitis virus, West Nile virus, and dengue virus

2016 ◽  
Vol Volume 10 ◽  
pp. 99-102 ◽  
Author(s):  
Mikihiro Yunoki ◽  
Takeshi Kurosu ◽  
Ritsuko Koketsu ◽  
Kazuo Takahashi ◽  
Yoshinobu Okuno ◽  
...  
Keyword(s):  
West Nile Virus ◽  
Dengue Virus ◽  
Japanese Encephalitis Virus ◽  
Japanese Encephalitis ◽  
Encephalitis Virus ◽  
Human Immunoglobulin ◽  
West Nile ◽  
Virus West Nile

scholarly journals Seroprevalence of Japanese encephalitis virus & West Nile virus in Alappuzha district, Kerala

2017 ◽  
Vol 146 (7) ◽  
pp. 70 ◽  
Author(s):  
Anukumar Balakrishnan ◽  
RomyJose Thekkekare ◽  
Gajanan Sapkal ◽  
BabasahebV Tandale
Keyword(s):  
West Nile Virus ◽  
Japanese Encephalitis Virus ◽  
Japanese Encephalitis ◽  
Encephalitis Virus ◽  
West Nile ◽  
Virus West Nile

scholarly journals Nonstructural Protein 1-Specific Immunoglobulin M and G Antibody Capture Enzyme-Linked Immunosorbent Assays in Diagnosis of Flaviviral Infections in Humans

2014 ◽  
Vol 53 (2) ◽  
pp. 557-566 ◽  
Author(s):  
Day-Yu Chao ◽  
Jedhan Ucat Galula ◽  
Wen-Fan Shen ◽  
Brent S. Davis ◽  
Gwong-Jen J. Chang
Keyword(s):  
West Nile Virus ◽  
Japanese Encephalitis Virus ◽  
Japanese Encephalitis ◽  
Nonstructural Protein ◽  
Encephalitis Virus ◽  
Igg Antibody ◽  
West Nile ◽  
Dengue Viruses ◽  
Nonstructural Protein 1 ◽  
Antibody Capture

IgM antibody- and IgG antibody-capture enzyme-linked immunosorbent assays (MAC/GAC-ELISAs) targeted at envelope protein (E) of dengue viruses (DENV), West Nile virus, and Japanese encephalitis virus (JEV) are widely used as serodiagnostic tests for presumptive confirmation of viral infection. Antibodies directed against the flavivirus nonstructural protein 1 (NS1) have been proposed as serological markers of natural infections among vaccinated populations. The aim of the current study is to optimize an IgM and IgG antibody-capture ELISA (MAC/GAC-ELISA) to detect anti-NS1 antibodies and compare it with anti-E MAC/GAC-ELISA. Plasmids to express premembrane/envelope (prM/E) or NS1 proteins of six medically important flaviviruses, including dengue viruses (DENV-1 to DENV-4), West Nile virus (WNV), and Japanese encephalitis virus (JEV), were constructed. These plasmids were used for the production of prM/E-containing virus-like particles (VLPs) and secreted NS1 (sNS1) from COS-1 cells. Archived clinical specimens from patients with confirmed DENV, JEV, and WNV infections, along with naive sera, were subjected to NS1-MAC/GAC-ELISAs before or after depletion of anti-prM/E antibodies by preabsorption with or without VLPs. Human serum specimens from previously confirmed DENV infections showed significantly enhanced positive-to-negative (P/N) ratios for NS1-MAC/GAC-ELISAs after the depletion of anti-prM/E antibodies. No statistical differences in sensitivities and specificities were found between the newly developed NS1- and VLP-MAC/GAC-ELISAs. Further application of the assays to WNV- and JEV-infected serum panels showed similar results. A novel approach to perform MAC/GAC-ELISAs for NS1 antibody detection was successfully developed with great potential to differentiate antibodies elicited by the tetravalent chimeric yellow fever-17D/dengue vaccine or DENV infection.

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