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Title: Evaluating the presence of Toxoplasma gondii in peripheral blood of patients with diverse forms of uveitis
Authors: Belfort, Rubens N. [UNIFESP]
Isenberg, Jordan
Fernandes, Bruno F.
Di Cesare, Sebastian
Belfort, Rubens, Jr. [UNIFESP]
Burnier, Miguel N., Jr. [UNIFESP]
Keywords: PCR
Toxoplasma gondii
Issue Date: 2017
Publisher: Springer
Citation: International Ophthalmology. Dordrecht, v. 37, n. 1, p. 19-23, 2017.
Abstract: The purpose of this study was to evaluate the presence of Toxoplasmosis gondii in samples of peripheral blood from patients with varying etiologies of uveitis. Whole blood from patients with different forms of uveitis was tested for the presence of T. gondii using real-time PCR targeting the well-characterized 529 bp fragment. Extracted DNA was both frozen. Thirty-one patients were included in the current study and grouped as follows: acute toxoplasmosis (n = 10)
toxoplasmic retinal scars (n = 9)
non-infectious etiologies of uveitis (n = 6)
and IgG negative for toxoplasmosis (n = 6). In total, only two patients were shown to have circulating T. gondii in peripheral blood
both of these patients were IgG positive for toxoplasmosis, were receiving immunosuppressive therapy for autoimmune uveitis, and had no clinical features of toxoplasmosis. T. gondii was identified in peripheral blood of some immunosuppressed patients. No other patients, including those with acute toxoplasmosis, had circulating parasites in peripheral blood.
ISSN: 0165-5701
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