Influenza A virus variants were found to be capable of inducing synthesis of avid antibodies when different species and lines of animals were immunized. CBA mice were the most convenient model permitting differentiation of "avidogenic" from "nonavidogenic" virus variants with a high degree of certainty. Recombinants may differ from parental viruses in their capacity to induce synthesis of avid antibody; with this, the transmission of only one gene (HA) from the "avidogenic" parent into the system of genes of A/PR/8/34 st in ensured a high "avidogenicity" of the recombinant. The "avidogenic" virus variants had a more marked protective effect than "nonavidogenic" ones.
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Mol Pharm
January 2025
Department of Biomedical Engineering, University of Minnesota-Twin Cities, Minneapolis, Minnesota 55455, United States.
Selective delivery of therapeutic modalities to tumor cells via binding of tumor-selective cell-surface biomarkers has empowered substantial advances in cancer treatment. Yet, tumor cells generally lack a truly specific biomarker that is present in high density on tumor tissue while being completely absent from healthy tissue. Rather, low but nonzero expression in healthy tissues results in on-target, off-tumor activity with detrimental side effects that constrain the therapeutic window or prevent use altogether.
View Article and Find Full Text PDFAlzheimers Res Ther
December 2024
Neurochemistry Laboratory, Department of Laboratory Medicine, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam Neuroscience, Amsterdam, The Netherlands.
Background: Among the Alzheimer's disease (AD) biomarkers measured in blood, phosphorylated forms of tau (p-tau) have been shown to exhibit a particularly high diagnostic potential. Here, we performed a comprehensive method comparison study, followed by evaluation of the diagnostic performance of eight recent plasma p-tau immunoassays targeting different tau phosphorylation sites, different tau fragments, and that are measured by two distinct platforms.
Methods: We enrolled a cohort of 40 patients with AD at the stage of dementia (AD-dem) characterized by positive CSF A + T + profile, and a control group of 40 cognitively healthy participants (Control), to conduct a comprehensive method comparison for three plasma p-tau181 and five plasma p-tau217 assays run on the Simoa HD-X™ or Lumipulse G600II/G1200 platforms.
Radiol Case Rep
February 2025
Advanced Diagnostic and Interventional Radiology Research Center, Tehran University of Medical Sciences, Tehran, Iran.
Endocrinology
November 2024
Department of Nuclear Medicine, West China Hospital, Sichuan University, Chengdu 610000, China.
Hum Brain Mapp
December 2024
Department of Neuroscience, UC Berkeley, Berkeley, California, USA.
Tau pathology spread into neocortex indicates a transition from healthy aging to Alzheimer's disease (AD). Connectivity between tau epicenters and later accumulating regions of cortex has been proposed as a mechanism of tau spread, but how this relationship changes with greater AD pathology burden or genotype is not understood. We investigated tau accumulation in two key regions, precuneus and inferior temporal cortex, using resting state functional connectivity (rsFC) and longitudinal PET imaging from a multicohort sample of cognitively unimpaired older adults.
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