What’s New in Point-of-Care Testing?

Le, Rachel D.; Melanson, Stacy E.F.

doi:10.1097/poc.0000000000000042

Cited by 2 publications

(1 citation statement)

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“…Laboratory diagnosis of dengue can be accomplished by viral isolation from samples of patients, detection of the viral genome, detection of viral antigens, especially the NS1 protein, and serological studies. Basic serological tests have been used for the diagnosis of dengue infection, such as hemagglutination inhibition (HI), complement fixation (CF), the neutralization test (NT), capture and sandwich types of ELISA, and point-of-care (PoC) tests [6,11,12]. Despite the availability of different laboratory techniques for the diagnosis of dengue, some obstacles must be overcome for the development of techniques and new tools, such as obtaining antigens of dengue viruses on a large scale to capture specific antibodies present in suspected sera.…”

Section: Introductionmentioning

confidence: 99%

Production of Proteins prM/M and E of Dengue Virus-3 in Pichia pastoris: Simplified Purification and Evaluation of Their Use as Antigens in Serological Diagnosis of Dengue

et al. 2020

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Dengue is a major arbovirus affecting humans today. With the growing number of cases, it is essential to have large-scale production of antigens for the development of diagnostic kits for the rapid detection of patients infected by the virus and consequent proper medical intervention for them. In this work, we express the prM/M and E proteins of dengue virus-3 in yeast Pichia pastoris KM71H. The proteins were produced in soluble form in the supernatant of the culture and were purified by precipitation with ammonium sulfate. The fraction of 80% of ammonium sulfate was used as an antigen in an indirect enzyme-linked immunosorbent assay (ELISA), providing a sensitivity of 82.61% and a specificity of 89.25%. Thus, the methodology proposed here showed promise for obtaining antigens of dengue viruses and creating quick and inexpensive diagnostic tests, which is of great value since large portions of the areas affected by this disease are economically neglected.

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Section: Introductionmentioning

confidence: 99%