Aging is a complex process associated with physiological changes in numerous organ systems. In particular, aging of the immune system is characterized by progressive dysregulation of immune responses, resulting in increased susceptibility to infectious diseases, impaired vaccination efficacy, as well as systemic low grade chronic inflammation. Increasing evidence suggest that...
A pro-inflammatory agent, lipopolysaccharide, can mimic the effects of aging on spatial reference memory
E. R. ESCOBEDO and K. R. Magnusson, Dept. of Biomedical Sciences, Coll. of Vet. Med., Linus Pauling Institute, Oregon State University, Corvallis, OR 97331
Humans and rodents experience declines in reference (long-term), working (short-term) memory, and...
The protein palmitoylation cycle has been shown to be important for protein signaling and synaptic plasticity. Data from our lab showed a change in the palmitoylation status of certain proteins with age. A greater percentage of the NMDA receptor subunits GluN2A and GluN2B, along with Fyn and PSD95 proteins, were...
The NMDA receptor is an important component of spatial working and reference memory. The receptor is a heterotetramer composed of a family of related subunits. The GluN2B subunit of the NMDA receptor appears to be essential for some forms of memory and is particularly vulnerable to change with age in...
The GluN1 subunit of the NMDA receptor shows age-related changes in its
expression pattern, some of which correlate with spatial memory performance in mice.
Aged C57BL/6 mice show an age-related increase in mRNA expression of GluN1
subunit splice variants that lack the N terminal splice cassette, GluN1ₒₓₓ (GluN1-a). This
increase...
Honey bee colony losses are a major concern in the USA and across the globe. Long-term data on losses are critical for putting yearly losses in context. US colony loss surveys have been conducted yearly since the winter of 2006–2007. Here, we report the results from the eighth annual survey...
Polar ecosystems are sensitive to climate forcing, and we often lack baselines to evaluate changes. Here we report a nearly 50-year study in which a sudden shift in the population dynamics of an ecologically important, structure-forming hexactinellid sponge, Anoxycalyx joubini was observed. This is the largest Antarctic sponge, with individuals...