A multimodal clinical diagnostic approach using MRI and F-FDG-PET for antemortem diagnosis of TDP-43 in cases with low-intermediate Alzheimer's disease neuropathologic changes and primary age-related tauopathy.

Objective: To evaluate the utility of clinical assessment scales for MRI and F-FDG-PET as potential in vivo predictive diagnostic tools for TAR DNA-binding protein of 43 kDa (TDP-43) proteinopathy in cases with low-intermediate Alzheimer's disease neuropathologic changes (ADNC) and primary age-related tauopathy (PART).

Methods: We conducted a cross-sectional analysis on patients with antemortem MRI and F-FDG-PET scans and postmortem diagnosis of low-intermediate ADNC or PART (Braak stage ≤ III; Thal β-amyloid phase 0-5). We employed visual imaging scales to grade structural changes on MRI and metabolic changes on F-FDG-PET and statistically compared demographic and clinicopathological characteristics between TDP-43 positive and negative cases.

Design, Synthesis, and Preliminary Evaluation of [Ga]Ga-NOTA-Insulin as a PET Probe in an Alzheimer's Disease Mouse Model.

Aberrant insulin signaling has been considered one of the risk factors for the development of Alzheimer's disease (AD) and has drawn considerable attention from the research community to further study its role in AD pathophysiology. Herein, we describe the development of an insulin-based novel positron emission tomography (PET) probe, [Ga]Ga-NOTA-insulin, to noninvasively study the role of insulin in AD. The developed PET probe [Ga]Ga-NOTA-insulin showed a significantly higher uptake (0.

Dynamic Imaging of Chimeric Antigen Receptor T Cells with [18F]Tetrafluoroborate Positron Emission Tomography/Computed Tomography.

T cells genetically engineered to express chimeric antigen receptors (CAR) have shown unprecedented results in pivotal clinical trials for patients with B cell malignancies or multiple myeloma (MM). However, numerous obstacles limit the efficacy and prohibit the widespread use of CAR T cell therapies due to poor trafficking and infiltration into tumor sites as well as lack of persistence in vivo. Moreover, life-threatening toxicities, such as cytokine release syndrome or neurotoxicity, are major concerns.