1. Prognostic Utility of Whole-Genome Sequencing and Polymerase Chain Reaction Tests of Ocular Fluids in Postprocedural Endophthalmitis.
- Author
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Lee CS, Hong B, Kasi SK, Aderman C, Talcott KE, Adam MK, Yue B, Akileswaran L, Nakamichi K, Wu Y, Rezaei KA, Olmos de Koo LC, Chee YE, Lee AY, Garg SJ, and Van Gelder RN
- Subjects
- Adult, Aged, Aged, 80 and over, Endophthalmitis diagnosis, Endophthalmitis genetics, Eye Infections, Bacterial diagnosis, Eye Infections, Bacterial genetics, Female, Follow-Up Studies, Humans, Male, Middle Aged, Polymerase Chain Reaction, Prognosis, Prospective Studies, Visual Acuity, Vitreous Body diagnostic imaging, Bacteria genetics, DNA, Bacterial analysis, Endophthalmitis microbiology, Eye Infections, Bacterial microbiology, Genome-Wide Association Study methods, Vitreous Body microbiology
- Abstract
Purpose: To associate detection of potential pathogen DNA in endophthalmitis with clinical outcomes., Design: Prospective cohort study., Methods: Patients in whom endophthalmitis was diagnosed following an intraocular procedure were recruited. Clinical outcome data from baseline, week-1, month-1, and month-3 visits were collected. Intraocular biopsy samples were cultured by standard methods. Quantitative polymerase chain reaction (qPCR) was performed for specific pathogens and whole-genome sequencing (WGS)., Results: A total of 50 patients (mean age 72 years old; 52% male) were enrolled. Twenty-four cases were culture-positive and 26 were culture-negative. WGS identified the cultured organism in 76% of culture-positive cases and identified potential pathogens in 33% of culture-negative cases. Month-1 and -3 visual acuities did not vary by pathogen-positive versus pathogen-negative cases as detected by either culture or WGS. Visual outcomes of Staphylococcus epidermidis endophthalmitis were no different than those of pathogen-negative cases, whereas the patients infected with other pathogens showed worse outcome. Higher baseline bacterial DNA loads of bacteria other than those of S epidermidis detected by WGS were associated with worse month-1 and -3 visual acuity, whereas the S epidermidis loads did not appear to influence outcomes. Torque teno virus (TTV) and Merkel cell polyomavirus (MCV) were detected by qPCR in 49% and 19% of cases, respectively. Presence of TTV at presentation was associated with a higher rate of secondary pars plana vitrectomy (P = .009) and retinal detachment (P = .022)., Conclusions: The presence and higher load of bacteria other than S epidermidis detected by WGS or DNA from TTV by qPCR in ocular fluids is associated with worse outcomes in post-procedure endophthalmitis., (Copyright © 2020 Elsevier Inc. All rights reserved.)
- Published
- 2020
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