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Femia AL, Gonzalez VDG, Garcia VS, Gugliotta LM. Carboxyl fuchsine-based colored particles for application to immunodetection. INT J POLYM MATER PO 2021. [DOI: 10.1080/00914037.2021.1876056] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
| | - Verónica D. G. Gonzalez
- INTEC, UNL-CONICET, Santa Fe, Argentina
- Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Ciudad Universitaria, Santa Fe, Argentina
| | | | - Luis M. Gugliotta
- INTEC, UNL-CONICET, Santa Fe, Argentina
- Facultad de Ingeniería Química, Universidad Nacional del Litoral, Santa Fe, Argentina
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Peretti LE, Gonzalez VDG, Clementi LA, Gugliotta LM. Latex particles by emulsion and dispersion polymerizations: sensitization with specific antigens of leptospirosis and application to immunoagglutination. BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING 2020. [DOI: 10.1007/s43153-020-00080-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Femia AL, Gonzalez VDG, Garcia V, Gugliotta LM. Polymerizable dye for colored particles synthesis with potential use in immunoassays. INT J POLYM MATER PO 2019. [DOI: 10.1080/00914037.2019.1616202] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
| | | | | | - Luis M. Gugliotta
- INTEC (UNL- CONICET), Santa Fe, Argentina
- Faculty of Chemical Engineering, UNL, Santa Fe, Argentina
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Diagnosis of toxoplasmosis in pregnancy. Evaluation of latex–protein complexes by immnunoagglutination. Parasitology 2017; 144:1073-1078. [DOI: 10.1017/s0031182017000294] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
SUMMARYThe aim of this work was to obtain a reagent based on latex particles for ruling out acute toxoplasmosis in pregnant women by immunoagglutination (IA). Latex–protein complexes (LPC) were previously synthesized coupling the recombinant protein ofToxoplasma gondiiP22Ag and the homogenate of the parasite to latex particles with different size, chemical functionality and charge density. LPC were tested in IA assays against a panel of 72 pregnant women serum samples. Results were analysed through receiver operating characteristic curves, determining area under the curve (AUC), sensitivity, specificity positive and negative predictive values (PPV and NPV, respectively). It was observed that the antigenicity of proteins was not affected during sensitization by either physical adsorption or covalent coupling. The best results in the sense of maximizing discrimination of low avidity sera from chronic ones were observed for the IA test based on latex particles with carboxyl functionality and the recombinant P22Ag, obtaining an AUC of 0·94, a sensitivity of 100% and a NPV of 100%. In this way, the proposed test could be useful for the toxoplasmosis diagnosis in pregnant women, with the advantages of being cheap, rapid and easy to be implemented.
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Peretti LE, Gonzalez VDG, Costa JG, Marcipar IS, Gugliotta LM. Synthesis and characterization of latex-protein complexes from different antigens ofToxoplasma gondiifor immunoagglutination assays. INT J POLYM MATER PO 2016. [DOI: 10.1080/00914037.2016.1180611] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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