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Evaluate the feasibility of noninvasive positron emission tomography (PET) using the radiotracer [18F]FHPG to detect herpes simplex virus encephalitis.

May 26, 2005Journal of VirologyOpen Access

[ 18 F]FHPG Positron Emission Tomography for Detection of Herpes Simplex Virus (HSV) in Experimental HSV Encephalitis

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Evaluate the feasibility of noninvasive positron emission tomography (PET) using the radiotracer [18F]FHPG to detect herpes simplex virus encephalitis.
Rats received intranasal inoculation with either herpes simplex virus type 1 (HSV-1) or phosphate-buffered saline control.
Dynamic PET scans and phosphor storage autoradiography were conducted to assess tracer uptake and distribution across brain regions.
High-performance liquid chromatography was performed to identify phosphorylated metabolites, alongside freeze-lesion experiments to differentiate viral uptake from blood-brain barrier disruption.
Whole-brain uptake of [18F]FHPG was significantly higher in HSV-1-infected rats than in uninfected controls, with prominent accumulation localized to regions vulnerable to intranasal viral spread.
Metabolite analysis demonstrated phosphorylated [18F]FHPG in infected brains, confirming selective intracellular trapping mediated by HSV thymidine kinase.
Differences in tracer washout kinetics successfully differentiated specific HSV-mediated uptake from nonspecific accumulation caused by blood-brain barrier breakdown.

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Implication

Experimental study demonstrates noninvasive PET detection of herpes simplex virus in infected rats, suggesting a promising diagnostic approach for early viral encephalitis.

Cite This Study

Buursma et al. (2005) studied this question.

synapsesocial.com/papers/6a89450e1e528df4f2ec61f1 https://doi.org/10.1128/jvi.79.12.7721-7727.2005

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Implication

Experimental study demonstrates noninvasive PET detection of herpes simplex virus in infected rats, suggesting a promising diagnostic approach for early viral encephalitis.

[ 18 F]FHPG Positron Emission Tomography for Detection of Herpes Simplex Virus (HSV) in Experimental HSV Encephalitis

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Discussion

Implication

Cite This Study

[ 18 F]FHPG Positron Emission Tomography for Detection of Herpes Simplex Virus (HSV) in Experimental HSV Encephalitis

Key Points

Discussion

Implication

Cite This Study

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