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Rete Mirabile

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https://www.readbyqxmd.com/read/27698167/hernia-of-the-swim-bladder-aerocystocele-with-concurrent-mycotic-granulomatous-inflammation-and-swim-bladder-carcinoma-in-a-wild-mullet-mugil-cephalus
#1
Rubina Sirri, Carlo Bianco, Gaetano Zuccaro, Maria Elena Turba, Luciana Mandrioli
We describe a hernia of the swim bladder, with a concurrent mycotic granulomatous inflammation, and carcinoma of the swim bladder in a wild mullet (Mugil cephalus) referred for an exophytic dorsal mass. Grossly, the mass was white, soft, and composed of multiple cystic gas-containing chambers connected by a funnel-shaped tissue segment to the coelomic swim bladder. Histologically, the mass was characterized by cysts of variable size, multifocally contiguous with the subepithelial rete mirabile, supported by abundant fibrous tissue...
November 2016: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/27475313/preclinical-study-on-an-animal-model-of-a-new-non-adhesive-cyanoacrylate-purefill-%C3%A2-for-arterial-embolization
#2
J Izaaryene, M Saeed Kilani, P-H Rolland, J-Y Gaubert, A Jacquier, J-M Bartoli, V Vidal
PURPOSE: The goal of this study was to assess the distal dispersion, the adhesion strength to catheter, the vascular toxicity and the ability in excluding embolized vessels using Purefill(®) (α-hexil-cyanoacrylate) as embolic material, which is a new high purity cyanoacrylate and compare these results with those obtained with N-butyl-2-cyanoacrylate (Histoacryl(®)) and a mixture of N-butyl-2-cyanoacrylate and methacryloxysulfolane. MATERIAL AND METHODS: In six pigs, the right rete mirabile (RM) and right renal arteries were embolized with α-hexil-cyanoacrylate, and the left rete mirabile and left renal artery were embolized with N-butyl-2-cyanoacrylate and N-butyl-2-cyanoacrylate+Methacryloxysulfolane for comparison...
July 27, 2016: Diagnostic and Interventional Imaging
https://www.readbyqxmd.com/read/27013231/development-of-an-angiogenesis-animal-model-featuring-brain-arteriovenous-malformation-histological-characteristics
#3
Chrysanthi Papagiannaki, Frédéric Clarençon, Sébastien Ponsonnard, Claude Couquet, Franck Maizeroi-Eugène, Damien Bresson, Catherine Yardin, Charbel Mounayer
BACKGROUND: Angiogenesis has a key role in the formation and evolution of brain arteriovenous malformations (AVMs). Numerous models have been developed aiming to recreate configuration of brain AVMs. OBJECTIVE: To develop an animal model sharing the same pathological characteristics as human brain AVMs. MATERIALS AND METHODS: Ten pigs were divided into two groups. Five animals underwent endovascular left common carotid artery (CCA) and external carotid artery (ECA) occlusion and five animals served as controls...
March 24, 2016: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/26689288/endovascular-external-carotid-artery-occlusion-for-brain-selective-targeting-a-cerebrovascular-swine-model
#4
Sundeep Mangla, Jae H Choi, Frank C Barone, Carol Novotney, Jenny Libien, Erwin Lin, John Pile-Spellman
BACKGROUND: The choice of an animal model for cerebrovascular research is often determined by the disease subtype to be studied (e.g. ischemic stroke, hemorrhage, trauma), as well as the nature of the intervention to be tested (i.e. medical device or pharmaceutical). Many initial studies are performed in smaller animals, as they are cost-effective and their encephalic vasculature closely models that of humans. Non-human primates are also utilized when confirmation or validation is required on higher levels and to test larger devices...
2015: BMC Research Notes
https://www.readbyqxmd.com/read/26644983/cranial-arterial-pattern-of-the-sri-lankan-spotted-chevrotain-moschiola-memmina-and-comparative-basicranial-osteology-of-the-tragulidae
#5
Haley D O'Brien
The cranial arterial pattern of artiodactyls deviates significantly from the typical mammalian pattern. One of the most striking atypical features is the rete mirabile epidurale: a subdural arterial meshwork that functionally and anatomically replaces the arteria carotis interna. This meshwork facilitates an exceptional ability to cool the brain, and was thought to be present in all artiodactyls. Recent research, however, has found that species of mouse deer (Artiodactyla: Tragulidae) endemic to the Malay Archipelago possess a complete a...
2015: PeerJ
https://www.readbyqxmd.com/read/26359213/focused-post-mortem-dissection-technique-for-harvest-of-rete-mirabile-in-domestic-swine-sus-scrofa
#6
Javed Khader Eliyas, Marek Niekrasz, Craig Wardrip, Seon-Kyu Lee
BACKGROUND: Rete mirabile (RM) of the domestic pig is a popular animal model of arteriovenous malformations. The RM (Latin for 'wonderful net)' comprises the arterioarterial portal connecting ascending pharyngeal arteries and the internal carotid arteries, which exists in the skull base of even-toed ungulates. Although angiographic access of the RM is relatively easy, its post mortem procurement is complicated and its detailed technique has not been well described. OBJECTIVE: To present our focused post mortem dissection technique for undamaged and complete harvest of the RM...
September 2016: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/26354184/from-vesalius-to-tractography
#7
REVIEW
I Zemmoura, J Vons, S Velut, C Destrieux
The description of an anatomical specimen may look straightforward, but it appears that it depends in fact on several intermingled factors: technical methods for conservation, dissection and vascular injection and the anatomist skills are of course important. This is especially true when the studied organ, as for instance the brain, is subject to rapid putrefaction after death without any preservation technique. Nevertheless the possibility to reject, or at least criticize, the dominant paradigm is probably as important as these technical considerations: important changes occurred in brain representation between the early Middle Ages and the Early Modern Times, without major improvements of cadaveric preservation or dissection methods; Vesalius rejected the existence of the rete mirabile in human not only because he was a talented anatomist but also because he accepted and had the courage to fight the dominant tradition inherited from Galen...
December 2015: Journal of Neurosurgical Sciences
https://www.readbyqxmd.com/read/26170955/experimental-study-of-temperature-sensitive-chitosan-%C3%AE-glycerophosphate-embolic-material-in-embolizing-the-basicranial-rete-mirabile-in-swines
#8
Xianbin Ning, Changfu Zhao, Jinfeng Pang, Zhaoyi Ding, Yubo Wang, Kan Xu, Hao Chen, Bingwei Li, Q I Luo
The aim of the present study was to evaluate the feasibility of the non-adhesive temperature-sensitive liquid embolic material, chitosan/β-glycerophosphate (C/GP), in embolizing the basicranial rete mirabile (REM) in a swine model of cerebral arteriovenous malformation (cAVM). A total of 24 domestic swines were used as the experimental animals, among which 12 pigs underwent direct embolization of one side of the REM, while the other 12 pigs underwent embolization of the bilateral REM following anastomosis of the carotid artery and jugular vein...
July 2015: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/26033377/skull-base-connections-between-the-middle-meningeal-and-internal-carotid-arteries
#9
R Shane Tubbs, Anne M Walker, Amin Demerdash, Petru Matusz, Marios Loukas, Aaron A Cohen-Gadol
BACKGROUND: External to internal carotid artery anastomoses are normally found in man. However, such connections at the skull base between the cavernous internal carotid artery and middle meningeal artery are rarely discussed in the literature and when present, are difficult, if not impossible, to see with imaging studies unless pathologically enlarged. Therefore, the aim of the present anatomic study was to investigate such connections via cadaveric dissection. MATERIALS AND METHODS: In 12 latex-injected adult cadaveric heads (24 sides), microdissection was performed to investigate for connections at the skull base between the cavernous part of the internal carotid and middle meningeal arteries...
September 2015: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/25995701/stenting-for-symptomatic-vertebral-artery-stenosis-associated-with-bilateral-carotid-rete-mirabile-the-long-term-clinical-and-angiographic-outcome
#10
Jang Hyun Baek, Byung Moon Kim
Symptomatic vertebral artery (VA) stenosis associated with bilateral carotid rete mirabile (CRM) has not been reported. We report the long-term clinical and angiographic outcome after stenting for symptomatic VA stenosis in the patient with bilateral CRM. This report is the first case that symptomatic VA stenosis associated with bilateral CRM was treated with stenting.
May 2015: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://www.readbyqxmd.com/read/25934776/carotid-rete-mirabile-associated-with-subarachnoid-hemorrhage-from-intracranial-aneurysm-a-case-report-and-systematic-review
#11
Eric Homero Albuquerque Paschoal, Vitor Nagai Yamaki, Fernando Mendes Paschoal Júnior, Ronie Leo Piske, Manoel Jacobsen Teixeira, Edson Bor-Seng-Shu
Carotid rete mirabile (CRM) is a rare physiological vascular network in humans that is most often found in Eastern populations. This paper describes a CRM associated with an aneurysmal subarachnoid hemorrhage (aSAH) and discusses the details of the patient's treatment. A 28-year-old woman was admitted to our service with clinical signs and symptoms of a spontaneous aSAH. Computed tomography revealed a diffuse and extensive SAH (Fisher group IV), while an angiogram showed an abnormal collateral network in the right carotid system and a hypoplastic aspect to the internal carotid artery (ICA) on the same side...
February 2015: Interventional Neuroradiology
https://www.readbyqxmd.com/read/25694115/the-arterial-circle-of-the-brain-its-branches-and-connections-in-selected-representatives-of-the-antilopinae
#12
Hieronim Frąckowiak, Dariusz Dębiński, Marcin Komosa, Maciej Zdun
The arterial circle of the brain, that is, the circle of Willis, and its branches in ruminants have been chiefly described in farm animals and only in selected wild species. In view of the deficit of information about this vascular region in numerous other species of the Ruminantia, the arteries of the encephalic base were analyzed in five antelope species representing different genera of the Bovidae, Antilopinae. Specimens of the following species were examined: springbuck (Antidorcas marsupialis), blackbuck (Antilope cervicapra), dik-dik (Madoqua kirkii), saiga (Saiga tatarica), and oribi (Ourebia ourebi)...
July 2015: Journal of Morphology
https://www.readbyqxmd.com/read/25593200/dual-lumen-balloon-catheters-may-improve-liquid-embolization-of-vascular-malformations-an-experimental-study-in-swine
#13
J C Gentric, J Raymond, A Batista, I Salazkin, G Gevry, T E Darsaut
BACKGROUND AND PURPOSE: Liquid embolic agents are increasingly used to treat vascular malformations. We sought to assess embolization with these agents by using a dual-lumen balloon catheter in an experimental setting. MATERIALS AND METHODS: Eighteen injections of liquid embolic agents were performed in the rete mirabile of swine. We used 3 methods to control liquid embolic agent reflux: 1) dual-lumen balloon-catheter (group A, n = 8); 2) injection of liquid embolic agent after proximal n-BCA plug formation through a second microcatheter (group B, n = 4); and 3) standard liquid embolic agent injection (group C, controls, n = 6)...
May 2015: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/25440939/anatomy-of-nasal-complex-in-the-southern-right-whale-eubalaena-australis-cetacea-mysticeti
#14
COMPARATIVE STUDY
Mónica R Buono, Marta S Fernández, R Ewan Fordyce, Joy S Reidenberg
The nasal region of the skull has undergone dramatic changes during the course of cetacean evolution. In particular, mysticetes (baleen whales) conserve the nasal mammalian pattern associated with the secondary function of olfaction, and lack the sound-producing specializations present in odontocetes (toothed whales, dolphins and porpoises). To improve our understanding of the morphology of the nasal region of mysticetes, we investigate the nasal anatomy, osteology and myology of the southern right whale, Eubalaena australis, and make comparisons with other mysticetes...
January 2015: Journal of Anatomy
https://www.readbyqxmd.com/read/25428448/bilateral-carotid-and-vertebral-rete-mirabile-with-vein-of-galen-aneurysmal-malformation-an-unreported-association
#15
Prabath Kumar Mondel, Rashmi Saraf, Uday S Limaye
Rete mirabile is a fine meshwork of anastomosing vessels that replace the parent artery. A 30-year-old woman complained of slurring of speech, right eye proptosis, recurrent vomiting, and loss of bladder and bowel control, followed by drowsiness lasting 30-40 min, for the past 6 months. On cross sectional imaging and angiography, the patient was found to have a vein of Galen aneurysmal malformation, with bilateral carotid and vertebral rete mirabile. The patient was offered both endovascular and open surgical options but she refused any form of surgical treatment and opted for conservative management...
January 2016: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/25414211/bilateral-carotid-and-vertebral-rete-mirabile-with-vein-of-galen-aneurysmal-malformation-an-unreported-association
#16
Prabath Kumar Mondel, Rashmi Saraf, Uday S Limaye
Rete mirabile is a fine meshwork of anastomosing vessels that replace the parent artery. A 30-year-old woman complained of slurring of speech, right eye proptosis, recurrent vomiting, and loss of bladder and bowel control, followed by drowsiness lasting 30-40 min, for the past 6 months. On cross sectional imaging and angiography, the patient was found to have a vein of Galen aneurysmal malformation, with bilateral carotid and vertebral rete mirabile. The patient was offered both endovascular and open surgical options but she refused any form of surgical treatment and opted for conservative management...
November 20, 2014: BMJ Case Reports
https://www.readbyqxmd.com/read/25399744/the-arteries-of-brain-base-in-species-of-the-cervid-family
#17
Agata Kiełtyka-Kurc, Hieronim Frąckowiak, Witold Brudnicki
The aim of the article was to describe the pattern of main arteries at the encephalon base, their connections, and varieties. This study included 106 specimens of the head and cerebral arteries of the following eight species of the cervid family: reindeer, chital, Eld's deer, wapiti, sika deer, fallow deer, Pere David's deer or milu, and Reeve's or Chinese muntjac. The arteries of the animals under study were filled with acetone-dissolved stained vinyl superchloride or stained latex LBS3060. The analysis of the specimens revealed that the vascular system of the species of the studied cervid family was similar to the system described in other ruminant species...
April 2015: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/25206443/application-of-sodium-alginate-microspheres-in-ischemic-stroke-modeling-in-miniature-pigs
#18
Yongchun Cui, Yi Tian, Yue Tang, Liujun Jia, Aili Wu, Peng Peng, Jianzhong Yang, Hong Du, Xiaojuan Wang, Like Wu
The miniature pig is an optimal animal model for studying nervous system disease because of its physiologic and pathologic features. However, the rete mirabile composed of arteries and veins at the skull base limits their application as a model of ischemic stroke by middle cerebral artery occlusion. The present study investigated the possibility of establishing an ischemic stroke model in the miniature pig by blocking the skull base retia with sodium alginate microspheres. Three Bama miniature pigs were used...
June 5, 2013: Neural Regeneration Research
https://www.readbyqxmd.com/read/24912572/histopathology-and-immunohistochemistry-of-tissues-outside-central-nervous-system-in-bovine-rabies
#19
Camila C Abreu, Priscilla A Nakayama, Clayton I Nogueira, Leonardo P Mesquita, Priscila F R Lopes, Flademir Wouters, Mary S Varaschin, Pedro S Bezerra
We performed a histopathological and immunohistochemical study of tissues outside the central nervous system in 48 cases of bovine rabies confirmed by direct immunofluorescence and/or immunohistochemistry (IHC) of the central nervous system. In the bovines of this study, mononuclear inflammation in all ganglia (trigeminal, spinal, stellate, and celiac) and adrenal medulla was observed. This injury also occurred in 85 % of neuro-pituitaries in 55 % of pars intermediate and 15 % of the pars distalis of pituitary evaluated...
August 2014: Journal of Neurovirology
https://www.readbyqxmd.com/read/24812570/a-wonderful-network-unraveled-detailed-description-of-capillaries-in-the-prosomal-ganglion-of-scorpions
#20
Bastian J Klußmann-Fricke, Sebastian W Pomrehn, Christian S Wirkner
INTRODUCTION: Though it has long been known that the prosomal ganglion of scorpions is supplied by a dense system of arteries, the pattern of this network has never been described and analyzed in detail. Using MicroCT in combination with computer aided 3D-reconstruction we provide the first detailed description of the pattern of arteries in the prosomal ganglion of Brotheas granulatus (Scorpiones, Chactidae) and other scorpion species. RESULTS: The entire prosomal ganglion in scorpions is supplied by a network of arteries that branch off the major arteries of the anterior aorta system...
2014: Frontiers in Zoology
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