Publications by authors named "J A Osborn"
The organum vasculosum of the lamina terminalis contributes to neurohumoral mechanisms of renal vascular hypertension.
Am J Physiol Regul Integr Comp Physiol
February 2025
The organum vasculosum of the lamina terminalis (OVLT) is a forebrain circumventricular organ that modulates central autonomic control of arterial pressure and body fluid homeostasis. It has been implicated in the pathogenesis of rat models of hypertension that are driven by increased salt intake since OVLT lesion (OVLTx) attenuates both the DOCA-salt and angiotensin II-salt models. However, its contribution to the development of hypertension that is not salt-dependent, such as the 2 kidney, 1 clip (2K1C) renovascular model, is not clear.
View Article and Find Full Text PDFThe objective of this study was to characterize hemodynamic changes during trans-vascular stimulation of the renal nerve and their dependence on stimulation parameters. We employed a stimulation catheter inserted in the right renal artery under fluoroscopic guidance, in pigs. Systolic, diastolic and pulse blood pressure and heart rate were recorded during stimulations delivered at different intravascular sites along the renal artery or while varying stimulation parameters (amplitude, frequency, and pulse width).
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- * The study introduces enhanced modeling techniques for neutrino flux and detector response, and it distinguishes between starting (inside) and throughgoing (outside) neutrino interaction events to improve energy resolution.
- * The findings indicate a best-fit point for the 3+1 model with sin²(2θ_{24})=0.16 and Δm_{41}²=3.5 eV², supporting previous studies while showing consistency with no evidence of sterile neutrinos, as reflected
Article Synopsis
- Spinal cord stimulation (SCS) trial periods often experience lead migration, which can negatively affect pain management outcomes for patients.
- Significant lead migration tends to happen early in the trial, specifically on postoperative days 1 or 2, suggesting that adjustments could be made to enhance therapeutic effectiveness.
- A study involving 27 patients revealed that 74% experienced clinically significant lead migration, with an average movement of around 18-19 mm shortly after implantation.