Abstract
The ability to differentiate infection from sterile inflammation and monitor antimicrobial therapy against multidrug-resistant pathogens through imaging of bacteria with radiolabeled ubiquicidin (UBI 29-41) is a truly unique feature of the single photon emission computed tomography and positron emission tomography techniques, considering that conventional computed tomography; magnetic resonance imaging and ultrasound are not able to detect microorganisms. In this article, a systematic review of the reported diagnostic accuracy of 99mTc-UBI scintigraphy in detection of infections, as well as a review of the recent 68Ga-UBI studies for bacteria-targeted imaging, is presented. The results of 15 clinical studies (622 patients) carried out from 2004 to 2015 using 99mTc-UBI indicate a pooled sensitivity and specificity as high as 95.5 and 92.5 %, respectively, with an overall accuracy of 94.4 % (95 % confidence interval of 91.6–97.2 %). Preclinical studies reveal the same ability of 68Ga-UBI to identify bacteria by PET images. The reviewed studies demonstrated that radiolabeled UBI is a useful tracer for the accurate diagnosis of infections.
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Acknowledgments
The authors acknowledge the funding provided by the National Council of Science and Technology-Mexico (CONACYT-SEP-CB-2014-01-242443) and the International Atomic Energy Agency (RC16467).
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All procedures followed were in accordance with the ethical standards of the responsible committee on human experimentation (institutional and national) and with the Helsinki Declaration of 1975, as revised in 2008. Informed consent was obtained from all patients for being included in the study.
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Ferro-Flores G, Avila-Rodriguez MA and Garcia-Perez OF declare that they have no conflict of interest.
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Ferro-Flores, G., Avila-Rodríguez, M.A. & García-Pérez, F.O. Imaging of bacteria with radiolabeled ubiquicidin by SPECT and PET techniques. Clin Transl Imaging 4, 175–182 (2016). https://doi.org/10.1007/s40336-016-0178-7
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DOI: https://doi.org/10.1007/s40336-016-0178-7