The effects of the H1-receptor antagonist dimethpyrindene and the H2-receptor antagonist burimamide on circulatory and respiratory parameters and on plasma histamine levels were tested in 21 mongrel dogs. Both drugs released histamine. The incidence for this effect was 10/11 in the case of dimethpyrindene and 5/10 in the case of burimamide. Following dimethpyrindene all animals showed arterial hypotension, pulmonal hypertension, decrease in peripheral resistance and hyperventilation. The portal venous pressure was increased in dogs reacting by a histamine release. Following burimamide both an initial arterial hypertension and a subsequent hypotension were observed the latter being more pronounced in the group with histamine release. In this group the portal venous pressure raised considerably. In the non-reacting animals cardiac output was elevated, probably due to a release of catecholamines. It seemed remarkable that the effect of exogenous histamine on portal venous pressure was completely blocked by dimethpyrindene, but not the action of histamine released by the drug itself. It is concluded that the effects of anti-histaminic drugs on possibly histamine-induced physiological and pathophysiological processes should be interpreted very carefully as far as their specificity is concerned.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1007/BF01964888 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Intraoperative Hemodynamic Monitoring and Prediction of Early Allograft Dysfunction Following Living Donor Liver Transplantation: A Systematic Review.
Clin Transplant
February 2025
Department of Transplant Surgery, University of California, California, San Francisco, USA.
Background: Multiple intraoperative hemodynamic parameters are associated with an increased risk of early allograft dysfunction (EAD) following living donor liver transplantation (LDLT); however, there is significant center-to-center variability in terms of which parameters are used. We sought to determine which intraoperative hemodynamic parameters are most predictive of EAD following LDLT.
Methods: This is a systematic review following PRISMA guidelines (PROSPERO ID: CRD42023409711).
Intraindividual Comparison of Image Quality Between Low-Dose and Ultra-Low-Dose Abdominal CT With Deep Learning Reconstruction and Standard-Dose Abdominal CT Using Dual-Split Scan.
Invest Radiol
January 2025
From the Department of Radiology, Ulsan University Hospital, Ulsan, Republic of Korea (T.Y.L.); Department of Radiology, University of Ulsan College of Medicine, Seoul, Republic of Korea (T.Y.L.); Department of Radiology, Seoul National University Hospital, Seoul, Republic of Korea (J.H.Y., H.K., J.M.L.); Department of Radiology, Seoul National University College of Medicine, Seoul, Republic of Korea (J.H.Y., S.H.P., J.M.L.); Department of Radiology, Inje University Busan Paik Hospital, Busan, Republic of Korea (J.Y.P.); Department of Radiology, Seoul National University Bundang Hospital, Seongnam, Republic of Korea (S.H.P.); Department of Radiology, Hanyang University College of Medicine, Seoul, Republic of Korea (C.L.); Division of Biostatistics, Medical Research Collaborating Center, Seoul National University Hospital, Seoul, Republic of Korea (Y.C.); and Institute of Radiation Medicine, Seoul National University Medical Research Center, Seoul, Republic of Korea (J.M.L.).
Objective: The aim of this study was to intraindividually compare the conspicuity of focal liver lesions (FLLs) between low- and ultra-low-dose computed tomography (CT) with deep learning reconstruction (DLR) and standard-dose CT with model-based iterative reconstruction (MBIR) from a single CT using dual-split scan in patients with suspected liver metastasis via a noninferiority design.
Materials And Methods: This prospective study enrolled participants who met the eligibility criteria at 2 tertiary hospitals in South Korea from June 2022 to January 2023. The criteria included (a) being aged between 20 and 85 years and (b) having suspected or known liver metastases.
A rare, asymptomatic case of an extrahepatic portocaval shunt between the posterior aspect of the portal vein and the inferior vena cava.
Surg Radiol Anat
January 2025
Department of Radiology, International University of Health and Welfare Narita Hospital, 852 Hatakeda, Narita, 286-8520, Chiba, Japan.
Purpose: We present the case of a rare extrahepatic portocaval shunt that resulted in communication of the portal vein and the inferior vena cava (IVC) at the level between two right renal veins that was incidentally diagnosed with contrast-enhanced computed tomography (CECT) in an asymptomatic patient.
Methods: A woman in her sixties with abdominal pain and diarrhea of unclear origin underwent exploratory abdominal CECT.
Results: The CECT incidentally revealed an extrahepatic portocaval shunt, whereby a vessel arising from the portal vein superior to the confluence of the superior mesenteric and splenic veins drained into the posterior aspect of the IVC between two right renal veins.
Portomesenteric Venous Thrombosis Presenting as Bowel Gangrene.
Cureus
December 2024
General Surgery, Grant Government Medical College and Sir JJ Group of Hospitals, Mumbai, IND.
Portal vein thrombosis (PVT) typically arises in patients with underlying cirrhosis, hepatobiliary malignancies, abdominal inflammatory conditions, or hematologic disorders. However, in non-cirrhotic individuals, PVT is less common and may initially present with minimal symptoms, escalating significantly if it extends to the mesenteric veins. Here, we present the case of a 37-year-old male with combined portal and mesenteric venous thrombosis, manifesting as acute intestinal obstruction.
View Article and Find Full Text PDFPredictive value of gemstone spectral imaging for chemotherapy response in colorectal cancer liver metastases: A retrospective study.
J Res Med Sci
December 2024
Department of Medical Imaging Center, Affiliated Hospital of Shandong Second Medical University, Weifang, Shandong, China.
Background: Accurate and timely assessment of tumor response after chemotherapy is crucial in clinical settings. The aim of this study was to explore the feasibility of Gemstone Spectral Imaging (GSI) for early assessment of chemotherapy responses in patients with colorectal cancer liver metastasis (CRCLM).
Materials And Methods: From October 2012 to October 2018, 46 patients (28 males and 18 females) with CRCLM received GSI followed by chemotherapy were retrospectively reviewed.
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!