scholarly journals An exploratory investigation of brain collateral circulation plasticity after cerebral ischemia in two experimental C57BL/6 mouse models

2019 ◽  
Vol 40 (2) ◽  
pp. 276-287 ◽  
Author(s):  
Marco Foddis ◽  
Katarzyna Winek ◽  
Kajetan Bentele ◽  
Susanne Mueller ◽  
Sonja Blumenau ◽  
...  
Keyword(s):  
Carotid Artery ◽  
Mouse Models ◽  
Collateral Circulation ◽  
Artery Occlusion ◽  
External Carotid Artery ◽  
External Carotid ◽  
Lesion Volume ◽  
Compensatory Mechanism ◽  
Ischemic Lesion ◽  
Acute Brain Ischemia

Brain collateral circulation is an essential compensatory mechanism in response to acute brain ischemia. To study the temporal evolution of brain macro and microcollateral recruitment and their reciprocal interactions in response to different ischemic conditions, we applied a combination of complementary techniques (T2-weighted magnetic resonance imaging [MRI], time of flight [TOF] angiography [MRA], cerebral blood flow [CBF] imaging and histology) in two different mouse models. Hypoperfusion was either induced by permanent bilateral common carotid artery stenosis (BCCAS) or 60-min transient unilateral middle cerebral artery occlusion (MCAO). In both models, collateralization is a very dynamic phenomenon with a global effect affecting both hemispheres. Patency of ipsilateral posterior communicating artery (PcomA) represents the main variable survival mechanism and the main determinant of stroke lesion volume and recovery in MCAO, whereas the promptness of external carotid artery retrograde flow recruitment together with PcomA patency, critically influence survival, brain ischemic lesion volume and retinopathy in BCCAS mice. Finally, different ischemic gradients shape microcollateral density and size.

scholarly journals Endovascular Revascularization of External Carotid Artery Occlusion Causing Tongue Infarction

2012 ◽  
Vol 52 (12) ◽  
pp. 910-913 ◽  
Author(s):  
Hiroshi KAGAMI ◽  
Makoto INABA ◽  
Shinya ICHIMURA ◽  
Koichi HARA ◽  
Joji INAMASU
Keyword(s):  
Carotid Artery ◽  
Artery Occlusion ◽  
Carotid Artery Occlusion ◽  
External Carotid Artery ◽  
External Carotid ◽  
Endovascular Revascularization

scholarly journals Retinal artery occlusion during carotid artery stenting with distal embolic protection device

2018 ◽  
Vol 31 (5) ◽  
pp. 504-508 ◽  
Author(s):  
Kotaro Kohara ◽  
Tatsuya Ishikawa ◽  
Tomonori Kobayashi ◽  
Takakazu Kawamata
Keyword(s):  
Carotid Artery ◽  
Carotid Artery Stenting ◽  
Internal Carotid ◽  
Retinal Artery Occlusion ◽  
Artery Occlusion ◽  
External Carotid Artery ◽  
External Carotid ◽  
Protection Device ◽  
Embolic Protection Device ◽  
Retinal Artery

Retinal artery occlusion associated with carotid artery stenosis is well known. Although it can also occur at the time of carotid artery stenting, retinal artery occlusion via the collateral circulation of the external carotid artery is rare. We encountered two cases of retinal artery occlusion that were thought to be caused by an embolus from the external carotid artery during carotid artery stenting with a distal embolic protection device for the internal carotid artery. A 71-year-old man presented with central retinal artery occlusion after carotid artery stenting using the Carotid Guardwire PS and a 77-year-old man presented with branch retinal artery occlusion after carotid artery stenting using the FilterWire EZ. Because additional new cerebral ischaemic lesions were not detected in either case by postoperative diffusion-weighted magnetic resonance imaging, it was highly likely that the debris that caused retinal artery occlusion passed through not the internal carotid artery but collaterals to retinal arteries from the external carotid artery, which was not protected by a distal embolic protection device. It is suggested that a distal protection device for the internal carotid artery alone cannot prevent retinal artery embolisation during carotid artery stenting and protection of the external carotid artery is important to avoid retinal artery occlusion.

A Case of intractable epistaxis

1997 ◽  
Vol 111 (12) ◽  
pp. 1192-1194
Author(s):  
P. El Jassar ◽  
D. Moraitis ◽  
M. Spencer ◽  
G. Sissions
Keyword(s):  
Carotid Artery ◽  
Artery Occlusion ◽  
Carotid Artery Occlusion ◽  
External Carotid Artery ◽  
External Carotid ◽  
Artery Ligation ◽  
Carotid Artery Ligation ◽  
The Common ◽  
Common Carotid Artery Occlusion ◽  
Intractable Epistaxis

AbstractThe surgical management of intractable epistaxis by external carotid artery ligation may become complicated if there is a high bifurcation of the common carotid artery. Occlusion of the bleeding vessels by catheter embolization is described in a patient in whom exploratio n of the neck had failed to locate the external carotid artery.

Sign in / Sign up

Export Citation Format

Share Document