1. Segments of cat posterior communicating artery and femoral artery submitted to field electrical stimulation showed frequency-dependent contractile responses which were decreased by tetrodotoxin, bretylium, and reserpine pretreatment. Phentolamine could only reduce the response of femoral artery segments. Superior cervical gangliectomy also decreased the contractions of cerebral cylinders. 2. The tritium released by electrical stimulation from both kinds of vessels preloaded with [3H]noradrenaline appeared reduced in the presence of tetrodotoxin, bretylium, and after reserpine pretreatment. It was also decreased in cerebral segments after superior cervical gangliectomy. 3. These results suggest that the electrical field stimulates the sympathetic nerve endings of these vessels.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/0306-3623(83)90043-5 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Coronary Intervention Outcomes in Patients with Liver Cirrhosis.
Curr Cardiol Rep
January 2025
Division of Cardiology, NYU Grossman School of Medicine, New York, NY, USA.
Purpose Of Review: This review assesses the outcomes of coronary interventions in patients with liver cirrhosis and coronary artery disease (CAD), focusing on the clinical challenges posed by cirrhosis-related hemodynamic and coagulopathic changes. It highlights essential considerations for managing these patients, who have an increased risk of adverse events during coronary procedures.
Recent Findings: Recent studies have shown that patients with liver cirrhosis undergoing PCI experience significantly higher mortality rates compared to non-cirrhotic patients, particularly in the context of STEMI and NSTEMI.
Multi-crosslinking nanoclay/oxidized cellulose hydrogel bandage with robust mechanical strength, antibacterial and adhesive properties for emergency hemostasis.
J Colloid Interface Sci
December 2024
College of Marine Life Sciences, Ocean University of China, No. 5 Yushan Road, Qingdao 266003, China. Electronic address:
Emergency bleeding presents significant challenges such as high blood flow and rapid hemorrhaging. However, many existing hemostatic bandages face limitations, including the uncontrolled release of hemostatic agents, insufficient mechanical strength, poor adhesion, and complex manufacturing processes. To address these limitations, we developed a multifunctional hydrogel bandage for emergency hemostasis using a one-pot synthesis method.
View Article and Find Full Text PDFEfficacy of a hands-free vascular ultrasound probe holder in active and inactive limbs during cycling exercise.
J Appl Physiol (1985)
January 2025
Department of Kinesiology and Health Sciences, University of Waterloo, Waterloo, Canada.
Measurement of blood flow during exercise is crucial for understanding physiological responses and performance outcomes. However, traditional methods are often invasive, costly, or require substantial training, limiting widespread research in this area. This study introduces the innovative use of limb-affixed ultrasound probe holders for vascular imaging during exercise to overcome these challenges.
View Article and Find Full Text PDFRepeated Supera stent fracture following stenting for popliteal artery occlusion: a case report.
J Int Med Res
January 2025
Department of Surgery, Chonnam National University Hospital, Gwangju, Republic of Korea.
The popliteal artery segment is particularly challenging for endovascular treatment. Stents used for treating popliteal artery lesions are usually associated with an increased risk of stent fracture and re-occlusion. The Supera stent is designed to withstand mechanical stress, with a low risk of fracture.
View Article and Find Full Text PDFA modified technique for radial artery access: how interventional radiologists can optimise the cardiologists' technique to suite their procedures.
CVIR Endovasc
January 2025
Radiology Department, The Princess Alexandra Hospital, Hamstel Road, Harlow, CM20 1QX, UK.
Background: This is a single-centre prospective observational study examining radial access in 62 Prostatic Artery Embolisation (PAE) procedures. Evaluation of left radial artery diameter using high frequency ultrasound before and after administration of sublingual glycerl trinitrate (GTN). Pre-procedure questionnaires calculating symptom severity score compared with post-procedure.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!