Vasodilation, conjunctival and nasal edema as well as miosis are symptoms associated with cluster headache (CH) attacks. Similar symptomatology is caused by substance P (SP) release from peripheral trigeminal nerve endings. The symptomatic effect of somatostatin (SRIF) during CH attacks was attributed to the inhibition of SP release from trigeminal neurons. This study was designed to evaluate both the vascular effect of SRIF on the dorsal hand vein and SRIF plasma levels prior to and after subcutaneous and intranasal administration in CH patients. A powerful venoconstriction and tachyphylaxis were demonstrated when SRIF was administered both as bolus and infusion. Plasma levels of SRIF in CH sufferers were lower than in control subjects. Subcutaneous and intranasal SRIF administrations induced maximal plasma levels after 5 and 10 min, respectively. These data suggest that SRIF plays an important role during CH attacks; however, its exact mechanism of action is still to be defined.
Download full-text PDF |
Source |
|---|
Publication Analysis
Top Keywords
Similar Publications
The diagnostic accuracy of plasma and serum calprotectin is inferior to C-reactive protein in patients with suspected Crohn's disease.
Scand J Gastroenterol
January 2025
Department of Internal Medicine, Section of Gastroenterology, Esbjerg Hospital - University Hospital of Southern Denmark, Esbjerg, Denmark.
Background And Aims: Prior studies indicate that serum calprotectin (SC) and plasma calprotectin (PC) can be used as biomarkers in Crohn's disease (CD). The aim of this study was to investigate the diagnostic accuracy of SC and PC in patients with a clinical suspicion of CD.
Method: This biobank study included patients from a prospective, blinded, multicenter study examining minimally invasive modalities for diagnosing CD.
Cross-cultural validation of plasma p-tau217 and p-tau181 as precision biomarkers for amyloid PET positivity: An East Asian study in Taiwan and Korea.
Alzheimers Dement
January 2025
Department of Neurology, Neurological Institute, Taipei Veterans General Hospital, Taipei, Taiwan.
Introduction: Plasma phosphorylated tau (p-tau) biomarkers have improved Alzheimer's disease (AD) diagnosis, but data from diverse Asian populations are limited. This study evaluated plasma p-tau217 and p-tau181 levels in Korean and Taiwanese populations.
Methods: All participants (n = 270) underwent amyloid positron emission tomography (PET) and blood tests.
Plasma Circulating Metabolites Associated With Steatotic Liver Disease and Liver Enzymes: A Multiplatform Population-Based Study.
Gastro Hep Adv
September 2024
Department of Epidemiology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands.
Background And Aims: Steatotic liver disease (SLD) is the most common chronic liver disease strongly associated with metabolic dysfunction, but its pathogenesis remains incompletely understood. Exploring plasma circulating metabolites may help in elucidating underlying mechanisms and identifying new biomarkers for SLD.
Methods: We examined cross-sectionally the association between plasma metabolites and SLD as well as liver enzymes using data from 4 population-based cohort studies (Rotterdam study, Avon Longitudinal Study of Parents and Children, The Insulin Resistance Atherosclerosis Family Study, and Study of Latinos).
Preparation and pharmacokinetic evaluation of a sertraline-methylpropyphenazone prodrug: a comparative metabolic study on the plasma and brain tissues of rats using LC-MS/MS analysis.
RSC Adv
January 2025
Department of Pharmaceutical Chemistry, Faculty of Pharmacy, King Abdulaziz University P.O. Box 80260 Jeddah 21589 Saudi Arabia +966 553399718.
A mutual prodrug of sertraline-methylpropyphenazone (SER-MP) was prepared and characterized using a spectral method. The yield of the prepared SER-MP was 90%, and its purity reached 98.8%.
View Article and Find Full Text PDFImpact of Proprotein Convertase Subtilisin/Kexin Type 9 Inhibitors on Lipoprotein(a): A Meta-Analysis and Meta-Regression of Randomized Controlled Trials.
JACC Adv
February 2025
Division of Cardiology, Department of Medicine, Duke University Medical Center, Durham, North Carolina, USA.
Background: Lipoprotein(a) [Lp(a)] has been independently associated with increased cardiovascular risk.
Objectives: The authors examined the effect of monoclonal antibody proprotein convertase subtilisin/kexin type 9 inhibitors (PCSK9is) on plasma Lp(a) levels across multiple trials.
Methods: Studies were retrieved comparing the effect of PCSK9i vs placebo on Lp(a) levels.
Want 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!