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Full-Text Articles in Life Sciences

Effects Of Acute And Chronic Endurance Exercise On Intracellular Nitric Oxide In Putative Endothelial Progenitor Cells: Role Of Napdh Oxidase, Nathan T. Jenkins, Sarah Witkowski, Espen E. Spangenburg, James M. Hagberg Nov 2009

Effects Of Acute And Chronic Endurance Exercise On Intracellular Nitric Oxide In Putative Endothelial Progenitor Cells: Role Of Napdh Oxidase, Nathan T. Jenkins, Sarah Witkowski, Espen E. Spangenburg, James M. Hagberg

Exercise and Sport Studies: Faculty Publications

We sought to delineate the effects of acute and chronic exercise on the regulation of intracellular nitric oxide (NOi) production in putative endothelial progenitor cells (EPCs). Putative EPC colony-forming units (CFUEC) were cultured from blood drawn before and after 30 min of treadmill exercise at 75% of maximal oxygen uptake in active (n = 8) and inactive (n = 8) men. CFU-EC were similar between groups at baseline, but increased after exercise in active men only (P = 0.04). CFU-EC expressed lower NADPH oxidase subunit gp91 phox mRNA and elevated endothelial nitric oxide synthase mRNA in active relative to inactive …


Same-Sex Social Behavior In Meadow Voles: Multiple And Rapid Formation Of Attachments, Annaliese K. Beery, David M. Routman, Irving Zucker Apr 2009

Same-Sex Social Behavior In Meadow Voles: Multiple And Rapid Formation Of Attachments, Annaliese K. Beery, David M. Routman, Irving Zucker

Neuroscience: Faculty Publications

Adult meadow voles (Microtus pennsylvanicus) are solitary in the spring–summer reproductive season, but during winter months, females and males are socially tolerant and aggregate in groups. This behavioral difference is triggered by day length: female meadow voles housed in short, winterlike day lengths form same-sex partner preferences, whereas those housed in long, summer-like day lengths are less social. The present study demonstrates that same-sex social attachments in short day lengths are not exclusive; females formed concurrent attachments with more than one individual, and with non-kin as well as siblings. Partner preferences between females were established within one day of cohousing …