PURPOSE: To evaluate the ability of real-time quantitative PCR (qPCR) for detectingToxoplasma gondii DNA in the peripheral blood and aqueous humor of patients with toxoplasmic active focal necrotizing retinochoroiditis. METHODS: Fifty-five patients with infectious uveitis seen from 2009 to 2013 at the Department of Ophthalmology and Visual Sciences of the Federal University of São Paulo were enrolled in this study. Forty-three patients had toxoplasmic active focal necrotizing retinochoroiditis, and the remaining 12 had non-toxoplasmic infectious uveitis and served as controls. qPCR analysis forT. gondii DNA was performed on the patients' peripheral blood and aqueous humor samples. RESULTS: The qPCR was positive for T. gondii DNA in 37.21% (16/43) of the aqueous humor samples and 2.33% (1/43) of the peripheral blood samples; further, 16.27% (7/43) of the patients had positive results in both their blood and aqueous humor samples. CONCLUSION: qPCR was able to detect T. gondii DNA in patients with toxoplasmic active focal necrotizing retinochoroiditis in the blood as well as the aqueous humor and can help with the diagnosis of the disease.
PURPOSE: To evaluate the ability of real-time quantitative PCR (qPCR) for detectingToxoplasma gondii DNA in the peripheral blood and aqueous humor of patients with toxoplasmic active focal necrotizing retinochoroiditis. METHODS: Fifty-five patients with infectious uveitis seen from 2009 to 2013 at the Department of Ophthalmology and Visual Sciences of the Federal University of São Paulo were enrolled in this study. Forty-three patients had toxoplasmic active focal necrotizing retinochoroiditis, and the remaining 12 had non-toxoplasmic infectious uveitis and served as controls. qPCR analysis forT. gondii DNA was performed on the patients' peripheral blood and aqueous humor samples. RESULTS: The qPCR was positive for T. gondii DNA in 37.21% (16/43) of the aqueous humor samples and 2.33% (1/43) of the peripheral blood samples; further, 16.27% (7/43) of the patients had positive results in both their blood and aqueous humor samples. CONCLUSION: qPCR was able to detect T. gondii DNA in patients with toxoplasmic active focal necrotizing retinochoroiditis in the blood as well as the aqueous humor and can help with the diagnosis of the disease.
Authors: J Michael Miller; Matthew J Binnicker; Sheldon Campbell; Karen C Carroll; Kimberle C Chapin; Peter H Gilligan; Mark D Gonzalez; Robert C Jerris; Sue C Kehl; Robin Patel; Bobbi S Pritt; Sandra S Richter; Barbara Robinson-Dunn; Joseph D Schwartzman; James W Snyder; Sam Telford; Elitza S Theel; Richard B Thomson; Melvin P Weinstein; Joseph D Yao Journal: Clin Infect Dis Date: 2018-08-31 Impact factor: 9.079
Authors: Elizabeth Souza Neves; Otavio Melo Espíndola; André Curi; Maria Regina Amendoeira; Danielle Nascimento Rocha; Leonardo Henrique Ferreira Gomes; Letícia Cunha Guida Journal: Parasitol Res Date: 2021-01-08 Impact factor: 2.289
Authors: Carlos A Gomez; Malaya K Sahoo; Ghazala Yasmeen Kahn; Lina Zhong; José G Montoya; Benjamin A Pinsky; Thuy Doan Journal: Br J Ophthalmol Date: 2019-01-12 Impact factor: 4.638