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NADPH oxidase derived ROS promote arterial contraction in early postnatal rats by activation of L-type voltage-gated Ca channels.
Free Radic Res
January 2025
Department of Human and Animal Physiology, Faculty of Biology, M.V. Lomonosov Moscow State University, Moscow, Russia.
Reactive oxygen species (ROS) produced by NADPH oxidase promote contraction of peripheral arteries, which is especially pronounced in early postnatal period in comparison to adulthood, but the mechanisms of such vasomotor influence are poorly understood. We tested the hypothesis that Rho-kinase and protein kinase C (PKC) mediate procontractile influence of NADPH oxidase derived ROS in peripheral artery of early postnatal rats. In addition, we evaluated the involvement Src-kinase and L-type voltage-gated Ca channels (LTCC) into procontractile influence of ROS, produced by NADPH oxidase, because of their known interplay with Rho-kinase and PKC pathways.
View Article and Find Full Text PDFInfluence of sex on sympathetic vasomotor outflow responses to passive leg raising in young individuals.
J Physiol Sci
January 2025
Department of Biomedical Engineering, Toyo University, Kawagoe, Japan.
The purpose of this study was to clarify sex differences in the inhibition of sympathetic vasomotor outflow which is caused by the loading of cardiopulmonary baroreceptors. Ten young males and ten age-matched females participated. The participants underwent a passive leg raising (PLR) test wherein they were positioned supine (baseline, 0º), and their lower limbs were lifted passively at 10º, 20º, 30º, and 40º.
View Article and Find Full Text PDFIntroduction: The pathogenic role of nitric oxide (NO) signaling during development of thoracic aortic aneurysm (TAA) in Marfan syndrome (MFS) is currently unclear. We characterized vasomotor function and its relationship to the activity of the NO-generating enzymes in mice with early onset progressively severe MFS.
Methods: Wire myography, immunoblotting, measurements of aortic NO and superoxide levels were used to compare vasomotor function, contractile-protein levels, and the activity of endothelial and inducible NO synthase (eNOS and iNOS, respectively) in ascending thoracic aortas of Fbn1mgR/mgR mice relative to wild type (WT) littermates.
The case of a woman with bilateral Dupuytren's contractures who developed CRPS-1 after fasciectomy with no relapse on subsequent collagenase clostridium histolyticum injection and manipulation of the other hand: Considerations for implementing a Budapest criteria checklist and assessing vasomotor instability by measuring differences in skin temperature.
J Hand Ther
January 2025
Saint Joseph, MI, USA. Electronic address:
Background: For patients who experience atypical neurogenic pain thought to be complex regional pain syndrome (CRPS) after Dupuytren's fasciectomy early recognition has been reported to improve outcomes. Furthermore, given the progressive nature of Dupuytren's, individuals with a history of CRPS have been "at risk" for further surgical intervention.
Purpose: To familiarize therapists with a Budapest criteria (BC) checklist for early diagnosis of CRPS, describe how tracking sudomotor/vasomotor signs alongside differences in skin temperature were used to monitor vasomotor instability and intervention effectiveness for a patient with atypical pain after fasciectomy and to detail management of the same patient with a CRPS history who had collagenase clostridium histolyticum (CCH) injection of her other hand without exacerbating CRPS.
Background: A coronary function test (CFT) is the recommended diagnostic test to identify coronary vasomotor dysfunction as a cause of symptoms in patients with angina and nonobstructive coronary arteries (ANOCA). Acetylcholine is the commonly used pharmacological agent for spasm provocation. We aimed to investigate an association between severity of symptoms and provocative acetylcholine dose.
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