scholarly journals Vieussens' arterial ring

2020 ◽  
Author(s):  
Balint Botz ◽  
Patrick Rock
Keyword(s):  
Arterial Ring

The relaxant effect of curcumin on porcine coronary arterial ring segments

2007 ◽  
Vol 47 (1) ◽  
pp. 25-30 ◽  
Author(s):  
Pei-Han Xu ◽  
Yuan Long ◽  
Fang Dai ◽  
Zhong-Li Liu
Keyword(s):  
Relaxant Effect ◽  
Arterial Ring

scholarly journals Detection of Large Aneurysm of Vieussens’ Arterial Ring After Abnormal Shadow on Chest Radiography

Circulation ◽  
2009 ◽  
Vol 120 (15) ◽  
Author(s):  
Chi Yuen Chan ◽  
Pui Wai Lee ◽  
Yat-Yin Lam ◽  
Wilson Wai-Man Chan ◽  
Ka Tak Wong ◽  
...  
Keyword(s):  
Chest Radiography ◽  
Arterial Ring ◽  
Abnormal Shadow ◽  
Large Aneurysm

scholarly journals Vieussens’ arterial ring: a rare coronary variant anatomy

2019 ◽  
Vol 25 (2) ◽  
pp. 109-113 ◽  
Author(s):  
Nurullah Dogan ◽  
◽  
Aydin Dursun ◽  
Hakan Ozkan ◽  
◽  
...  
Keyword(s):  
Arterial Ring ◽  
Variant Anatomy

Relative responses to luminal and adventitial adenosine in perfused arteries

1992 ◽  
Vol 263 (5) ◽  
pp. H1437-H1446 ◽  
Author(s):  
J. P. Headrick ◽  
F. J. Northington ◽  
M. R. Hynes ◽  
G. P. Matherne ◽  
R. M. Berne
Keyword(s):  
Smooth Muscle ◽  
Diffusion Barrier ◽  
Endothelial Damage ◽  
Effective Concentration ◽  
Half Maximum ◽  
Concentration Gradients ◽  
Arterial Ring ◽  
Transport Inhibition ◽  
Arterial Reactivity ◽  
Relative Differences

Responses to luminal and adventitial adenosine were compared in perfused rabbit central ear arteries. Perfused arteries precontracted with 0.5 microM norepinephrine relaxed dose dependently but asymmetrically to luminal and adventitial adenosine. Arteries were more responsive to luminal adenosine in the 0.1- to 1.0-microM range, but they were more responsive to adventitial adenosine at doses > 10 microM. Alternatively, 2-chloroadenosine, a metabolically stable and poorly transported analogue, was equipotent when applied luminally or adventitially. Endothelial damage reduced sensitivity and response asymmetry to luminal and adventitial adenosine. This was consistent with reduced responses to adenosine in luminally rubbed arterial ring segments. Transport inhibition (10 microM dipyridamole) enhanced arterial reactivity to luminal and adventitial adenosine and reduced response asymmetry but was without effect on responses to 2-chloroadenosine. A comparison of the inhibitory effectiveness of adventitial and luminal 8-phenyltheophylline revealed that adventitial antagonist was approximately threefold more effective in inhibiting responses to adventitial adenosine than luminal antagonist (P < 0.05). This "side-dependent" difference was reduced by prolonged antagonist incubation or endothelial removal. The data indicate that adenosine relaxes ear arteries by activation of smooth muscle [half-maximum effective concentration (ED50) approximately 11 microM] and endothelial (ED50 approximately 2 microM) receptors. Nevertheless, a sensitive endothelial-dependent response does not consistently enhance responses to luminal adenosine in perfused arteries. This appears to be attributable to relative differences in the smooth muscle and endothelium-dependent components of the dilator response and transvascular concentration gradients for luminally and adventitially applied adenosine. A transendothelial diffusion barrier also reduces the ability of luminally applied antagonists to inhibit responses to adventitial adenosine.

Anomalies in Cephalothoracopagus Synotus Twins and Their Implications for Morphogenesis in Conjoined Twins

1999 ◽  
Vol 2 (5) ◽  
pp. 464-472 ◽  
Author(s):  
A.W. Bates ◽  
S.M. Dodd
Keyword(s):  
Venous Return ◽  
Conjoined Twins ◽  
Ear Canal ◽  
Developmental Defects ◽  
Anatomical Features ◽  
Situs Ambiguus ◽  
Arterial Ring ◽  
Anomalous Pulmonary Venous Return ◽  
Asplenia Syndrome ◽  
Body Pattern

The anatomical features of a pair of female conjoined twins of the cephalothoracopagus type are described: the anterior face was well formed but the posterior face was cyclopean with a single ear canal. Visceral abnormalities included two shared hearts linked by an anastomotic arterial ring. The smaller of the hearts was univentricular with atrial situs ambiguus and anomalous pulmonary venous return, and was associated with two trilobed lungs. This, and the presence of a single spleen, suggested asplenia syndrome in one twin. The brains, orientated with respect to the notochordal axes, were joined only at the frontal poles. The abnormalities described in previous reports of twins of this type are reviewed and compared. In addition to alterations in body pattern due to conjoining, endodermal developmental defects and abnormal laterality appear to have been involved in the morphogenesis of this case.

Rupture of an aneurysm of Vieussens' arterial ring presenting as acute cardiac tamponade

2009 ◽  
Vol 64 (11) ◽  
pp. 1129-1131 ◽  
Author(s):  
A.R. Owen ◽  
S.C. Moten ◽  
M.P. Molan
Keyword(s):  
Cardiac Tamponade ◽  
Arterial Ring

scholarly journals β-Hydroxybutyric Inhibits Vascular Calcification via Autophagy Enhancement in Models Induced by High Phosphate

2021 ◽  
Vol 8 ◽  
Author(s):  
Jianwen Liang ◽  
Jieping Huang ◽  
Wanbing He ◽  
Guangzi Shi ◽  
Jie Chen ◽  
...  
Keyword(s):  
Vascular Calcification ◽  
Mediation Analysis ◽  
Influencing Factor ◽  
The Elderly ◽  
Hydroxybutyric Acid ◽  
Autophagy Flux ◽  
Phenotypic Differentiation ◽  
Arterial Ring ◽  
Significant Mediator ◽  
High Phosphate

Background: Vascular calcification (VC) is a landmark of aging, while β-hydroxybutyric acid (BHB) induced by calorie restriction has been identified as a promising factor to extend the lifespan. However, the effect of BHB on VC and the potential mechanism remain unknown.Methods: A total of 160 subjects with or without metabolic abnormalities (MAs) were assigned to four groups according to different calcification severities. The association between BHB, MAs, and VC was investigated via mediation analysis. Then, with high phosphate-induced calcification models, the effect of BHB on arterial ring calcification and osteogenic phenotypic differentiation of vascular smooth muscle cells (VSMCs) was investigated. Hereafter the expressions of autophagy biomarkers, autophagy flux, and effects of autophagy inhibitors on VC were detected.Results: Severe VC was observed in the elderly, accompanied with a higher proportion of hypertension, chronic kidney disease, and lower estimated glomerular filtration rate. The serum BHB level was an independent influencing factor of VC severities. With mediation analysis, BHB was determined as a significant mediator in the effects of MAs on VC, and the indirect effect of BHB accounted for 23% of the total effect. Furthermore, BHB directly inhibited arterial ring calcification and osteogenic phenotypic differentiation in VSMCs, accompanied with autophagy enhancement in VSMCs. In accordance, the inhibition of autophagy counteracted the protective effect of BHB on VC.Conclusion: The present study demonstrated that BHB mediated the effects of MAs on VC; then, it further elucidated that BHB could inhibit arterial and VSMC calcification via autophagy enhancement.

scholarly journals Large Arterial Ring Formed between the M1 and M2 Segments of the Right Middle Cerebral Artery Diagnosed with MR Angiography

2018 ◽  
Vol 17 (3) ◽  
pp. 193-194
Author(s):  
Haruomi Yamaguchi ◽  
Akira Uchino ◽  
Naoko Saito ◽  
Ichiro Deguchi ◽  
Masaki Takao
Keyword(s):  
Middle Cerebral Artery ◽  
Cerebral Artery ◽  
Mr Angiography ◽  
Arterial Ring ◽  
The Right

scholarly journals CT features of an uncommon association between coronary-pulmonary fistula and Vieussens’ arterial ring

2020 ◽  
Vol 101 (7-8) ◽  
pp. 499-500
Author(s):  
M. Cellina ◽  
F. Bombaci ◽  
D. Gibelli ◽  
P. Marta ◽  
G. Oliva
Keyword(s):  
Arterial Ring ◽  
Ct Features
Sign in / Sign up

Export Citation Format

Share Document