Morphology and Comparative Anatomy of Circulus Arteriosus Cerebri in Mammals

Kapoor, Kanchan; Vk, Kak; Singh, Balbir

doi:10.1111/j.1439-0264.2003.00492.x

Cited by 53 publications

(68 citation statements)

References 16 publications

(34 reference statements)

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“…The overall schema of the blood supply to the cranial region and the brain, the histological structure of the walls of the arteries, and the basic pattern of the embryological development are essentially the same in dog as they are in man ( Figure 5) [7,11] been described in humans, and they play a significant role in the cerebral aneurysms formation, in terms of hemodynamic stress caused by variations [12,13]. In contrast, variants of the Circle of Willis have been rarely described in dog so far [7,14,15].…”

Section: Discussionmentioning

confidence: 94%

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Incidental Intracranial Aneurysm in a Dog Detected by 16-Multidetector Row Computed Tomography Angiography

Bertolini

2013

Case Reports in Veterinary Medicine

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This paper describes a small intracranial aneurysm incidentally found in a 24-month-old Nova Scotia Duck Tolling Retriever evaluated for a recent history of lethargy, fever, and cervical pain. The clinicopathological analysis revealed leukocytosis, and increased haptoglobin and C-reactive protein consistent with severe flogistic process. Nonenhanced computed tomography of the brain and cervical spine showed a diffuse encephalopathy and moderate cervical syringohydromyelia. Computed tomography angiography series of the brain showed a small saccular dilation at the joining point of the two rostral cerebral arteries consistent with a small aneurysm. Cerebrospinal fluid examination led to the final diagnosis of aseptic meningitis. The dog was discharge with a long-term corticosteroid therapy for the meningitis. At two-month follow-up evaluation, the cerebrospinal fluid examination was normal and the computed tomography of the brain showed no abnormalities except for the stable aneurysm. To our knowledge, this is the first description of a spontaneous cerebral aneurysm in dogs and serves to broaden the spectrum of cerebrovascular diseases in this species.

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Section: Discussionmentioning

confidence: 94%

“…To date, very little is known concerning the type and incidence of variants and anomalies of the cerebrovascular system in dogs and cats [7][8][9]. Historically, few cases of cerebral hemorrhage in dogs were thought to be correlated to aneurysm, but their existence could not be proved [10].…”

Section: Introductionmentioning

confidence: 99%

Incidental Intracranial Aneurysm in a Dog Detected by 16-Multidetector Row Computed Tomography Angiography

Bertolini

2013

Case Reports in Veterinary Medicine

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“…Thus, we prevented the unintended entry of Percusurge by navigating a guiding catheter distally to the bifurcation of the Pcom A. 6,9) In monkey models of transient MCAo, relatively clear findings of infarction are often obtained around the head of the caudate nucleus, which corresponds to the deep border zone. 5,10) Also, pyknosis demonstrated by histological examination is consistent with findings suggestive of cerebral infarction.…”

Section: Discussionmentioning

confidence: 99%

Transient Middle Cerebral Artery Occlusion Model in the Macaca fuscata Using a Novel Intravascular Technique

Okuma

Liu

Hishikawa

et al. 2016

JNET

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Objective: The preparation of transient ischemic stroke models in monkeys has been highly invasive, and consistent preparation of an infarct area has been difficult. We attempted the preparation of a model by applying a neuroendovascular technique for humans. Methods:Using the Macaca fuscate, a 5 Fr sheath was placed in the right femoral artery under general anesthesia, a 5 Fr catheter was placed in the right internal carotid artery (ICA) via a bovine arch, a 4 Fr catheter was concentrically placed distally to the bifurcation of the posterior communicating artery (Pcom A), and a balloon catheter conventionally used for the prevention of distal embolism was guided to the origin of the M1 segment of the middle cerebral artery in a triple co-axial manner. Under antithrombotic treatment by heparinization, balloon occlusion was performed for 2 h, and neurological and histological evaluations were carried out 48 h after reperfusion.Results: Left hemiplegia was observed after the procedure, and ischemic changes were histopathologically confirmed around the head of the caudate nucleus located in the border zone of the territory of the occluded vessel. Conclusion:Less invasive and highly consistent transient ischemic stroke models may be prepared by an endovascular approach.Keywords▶ middle cerebral artery occlusion model, Macaca fuscata, bovine arch, azygos anterior cerebral artery

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“…Origines du système artériel cérébral (GILLIAN 1974 ;GILLIAN 1976 ;KAPOOR, KAK et SINGH, 2003) Chez l'homme, les primates, le rat et le lapin, le sang artériel atteint le cerveau par les artères carotides internes et les artères vertébrales. Sur la face ventrale du cerveau, les artères forment un réseau complexe d'anastomoses dit cercle ou polygone de Willis.…”

Section: Organisation Anatomiqueunclassified

La physiologie de la circulation cérébrale

Florence¹

2004

bavf

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(1) Vétérinaire en chef -Maître de recherches du service de santé des armées, docteur en sciences, habilité à diriger des recherches IMASSA, Département de physiologie intégrée, BP 73, 91223 Brétigny sur Orge cedex, Tél : 01 69 23 75 47, FAX : 01 69 23 70 02, email : gflorence@imassa.fr Le cerveau est incapable de faire des réserves en oxygène et glucose. Il dépend donc pour ces nutriments de l'apport sanguin c'est-à-dire de la circulation cérébrale. Cet article décrit les principales caractéristiques structurales de cette circulation, puis il fait le point sur les mécanismes des différents types de régulation de la perfusion sanguine cérébrale. Ces mécanismes assurent la circulation malgré des variations systémiques (hypercapnie, hypoxie, variation de pression de perfusion et de l'hématocrite) mais aussi lorsque la demande métabolique neuronale est augmentée. Ce dernier type de régulation ou couplage neurovasculaire est à la base de techniques utilisées en neuroimagerie fonctionnelle, qui sont brièvement explicitées. Enfin, des exemples de pathologies dans lesquelles la régulation de la circulation cérébrale est perturbée sont donnés. Mots

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Morphology and Comparative Anatomy of Circulus Arteriosus Cerebri in Mammals

Cited by 53 publications

References 16 publications

Incidental Intracranial Aneurysm in a Dog Detected by 16-Multidetector Row Computed Tomography Angiography

Incidental Intracranial Aneurysm in a Dog Detected by 16-Multidetector Row Computed Tomography Angiography

Transient Middle Cerebral Artery Occlusion Model in the Macaca fuscata Using a Novel Intravascular Technique

La physiologie de la circulation cérébrale

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