Publications by authors named "J E Summers"

Intracellular protein production in bacteria is limited by the need for lysis and costly purification. A promising alternative is to engineer the host organism for protein secretion. While the serovar Typhimurium ( .

View Article and Find Full Text PDF

Purpose: Nitric oxide (NO) is recognized as an important biological mediator that controls several physiological functions, and evidence is now emerging that this molecule may play a significant role in the postnatal control of ocular growth and myopia development. We therefore sought to understand the role that nitric oxide plays in visually-guided ocular growth in order to gain insight into the underlying mechanisms of this process.

Methods: Choroids were incubated in organ culture in the presence of the NO donor, PAPA- NONOate (1.

View Article and Find Full Text PDF

Isolation caused by anthropogenic habitat fragmentation can destabilize populations. Populations relying on the inflow of immigrants can face reduced fitness due to inbreeding depression as fewer new individuals arrive. Empirical studies of the demographic consequences of isolation are critical to understand how populations persist through changing conditions.

View Article and Find Full Text PDF

Background And Objectives: Deep brain stimulation (DBS) is an effective treatment for Parkinson's disease (PD) motor symptoms. DBS is also associated with postoperative cognitive change in some patients. Previous studies found associations between medial active electrode contacts and overall cognitive decline.

View Article and Find Full Text PDF