Publications by authors named "K Jameson"
In eukaryotic cells, molecular fate and cellular responses are shaped by multicomponent enzyme systems which reversibly attach ubiquitin and ubiquitin-like modifiers to target proteins. The extent of the ubiquitin proteasome system in Leishmania mexicana and its importance for parasite survival has recently been established through deletion mutagenesis and life-cycle phenotyping studies. The ubiquitin conjugating E2 enzyme UBC2, and the E2 enzyme variant UEV1, with which it forms a stable complex in vitro, were shown to be essential for the differentiation of promastigote parasites to the infectious amastigote form.
View Article and Find Full Text PDFUnlabelled: The vagus nerve is proposed to enable communication between the gut microbiome and brain, but activity-based evidence is lacking. Herein, we assess the extent of gut microbial influences on afferent vagal activity and metabolite signaling mechanisms involved. We find that mice reared without microbiota (germ-free, GF) exhibit decreased vagal afferent tone relative to conventionally colonized mice (specific pathogen-free, SPF), which is reversed by colonization with SPF microbiota.
View Article and Find Full Text PDFArticle Synopsis
- Cone contrast threshold testing (CCT) measures color and contrast function in patients with various eye diseases, revealing changes not typically monitored in clinical trials.* -
- A study involving 237 patients (including those with MS, AMD, ERM, and RVO) showed that many demonstrated color and contrast deficits, highlighting the limitations of standard vision tests.* -
- The findings suggest that CCT is valuable for understanding vision quality in different retinal diseases, indicating the need for further research with larger patient groups.*
Ubiquitination is a post-translational modification conserved across eukaryotic species. It contributes to a variety of regulatory pathways, including proteasomal degradation, DNA repair, and cellular differentiation. The ubiquitination of substrate proteins typically requires three ubiquitination enzymes: a ubiquitin-activating E1, a ubiquitin-conjugating E2, and an E3 ubiquitin ligase.
View Article and Find Full Text PDFPurpose: To test a new approach to address moral distress in intensive care unit (ICU) personnel.
Methods: Using principles of participatory action research, we developed an eight-step moral conflict assessment (MCA) that guides participants in describing the behaviour that they have to implement, the effects this has on them, their current coping strategies, their values in conflict, any other concerns related to the situation, what helps and hinders the situation, new coping strategies, and the effect of the preceding steps on participants. This assessment was tested with eight ICU providers in an 11-bed community ICU.