Intratemporal Facial Nerve; Blood Flow in Guinea Pigs Measured by Laser Doppler Flowmeter.

Takeda, Taizo; Kozakura, Kenichi; Saito, Haruo

doi:10.5631/jibirin.85.1657

Cited by 3 publications

(5 citation statements)

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“…In the other 10 per cent with no blood supply of the mastoid segment of the facial nerve by the middle meningeal artery, as well as in cases of embolization of middle meningeal artery tributaries (as in our case, Figure 3e and f), facial nerve dysfunction should be expected due to significant occlusion of its supply. A recent experimental study on guinea pigs showed that the blood flow in the geniculate ganglion of the facial nerve comes not from the stylomastoid artery but mainly from the petrosal artery, so that facial nerve ischaemia at the level of the geniculate ganglion following ligation of the middle meningeal artery or embolization of the maxillary artery can result in facial palsy (Takeda et al, 1997).…”

Section: Discussionmentioning

confidence: 99%

Facial palsy after glomus jugulare tumour embolization

Marangos

Schumacher

1999

J. Laryngol. Otol.

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Facial palsy after pre-operative embolization of glomus tumours is a rare complication. In our case, complete facial palsy occurred within four hours after embolization with polyvinyl alcohol foam. Three days later, embolization material was found in the perineural vessels of the facial nerve in its mastoidal segment. Six months after complete tumour removal, facial decompression with perineural incision, and steroid therapy, facial function recovered completely. In cases of embolization of both stylomastoid and branches of the middle meningeal artery with resorbable material, temporary facial palsy can occur.

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Section: Discussionmentioning

confidence: 99%

Facial palsy after glomus jugulare tumour embolization

Marangos

Schumacher

1999

J. Laryngol. Otol.

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“…6). While the former segment is supplied by the labyrinthine (internal auditory) artery from the anterior inferior cerebellar artery, the mastoid segment is nourished by the stylomastoid vessel from the posterior auricular or occipital artery, and the tympanic segment is vascularised by the petrosal artery [2,14,15,18]. According to some authors, there are anastomoses between the stylomastoid and the petrosal arteries [5,14,18].…”

Section: Discussionmentioning

confidence: 99%

“…The facial nerve is typically divided into 3 topographical segments: the labyrinthine (within the initial part of the facial or Fallopian canal), the tympanic (along the border with the tympanic cavity) and the mastoid (along the border between the latter cavity and the mastoid process) [2,3,8,17,18]. The geniculate ganglion is located just anterior to the first genu of the nerve, i.e.…”

Section: Discussionmentioning

confidence: 99%

“…Only El-Khouly et al [12] found a very small MMA in one specimen, which ended in the petrosal branch, while Clarke [11] noticed a petrosal vessel to arise from an accessory MMA. Anyway, ligation of the MMA or embolisation of the maxillary artery for epistaxis, or administration of an anticancer drug into the maxillary artery, may compromise the circulation through the petrosal branch, and thus cause the facial nerve palsy [6,18].…”

Section: Petrosal Arterymentioning

confidence: 99%

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Vascularisation of the geniculate ganglion

Dožić

Ćetković²,

Marinković

et al. 2014

Folia Morphol

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“…Our previous study [13] using a laser Doppler flowmeter revealed that the FN at the geniculate ganglion is mainly hemodynamically supplied from the petrosal artery in guinea pigs, and that interruption of the petrosal artery resulted in an abrupt decrease in blood circulation around the geniculate ganglion. This circulatory failure is likely to cause regional ischemic lesions in the FN.…”

Section: Discussionmentioning

confidence: 99%

An Animal Model of Ischemic Facial Palsy

Takeda¹,

Takeda²,

Okada

et al. 2008

ORL

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We investigated facial palsy which was induced by the interruption of the petrosal artery in guinea pigs. Forty animals were observed for 2 months regarding their behavioral facial nerve function and assessed by the blink reflex. Morphological changes in the intratemporal portion were observed with transmission electron microscopy in 20 animals with an interrupted petrosal artery. Facial palsy developed in 85.0% within 3 days after the interruption. The degree of palsy varied from mild to severe. Remission of palsy required 2–3 months in severe cases, 3 weeks or less in mild/moderate cases. Histological studies revealed a striking difference in the degree of degenerative changes between severe cases and mild/moderate cases. Animals with severe palsy showed extensive axonal atrophy and myelin disruption from the early stage. Meanwhile, degenerative changes were slight in cases with mild/moderate palsy. Regenerating unmyelinated fibers appeared 1 week after the interruption, but diminished in number 4 weeks later. Thereafter, new myelin was reformed on fibers. In cases of severe nerve damage, however, this regeneration process did not always seem to work well. A decrease in number and an irregular shape of the fibers were noted in animals with incomplete recovery. This animal model may be helpful for understanding the pathophysiology of ischemic facial palsy.

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Intratemporal Facial Nerve; Blood Flow in Guinea Pigs Measured by Laser Doppler Flowmeter.

Cited by 3 publications

References 0 publications

Facial palsy after glomus jugulare tumour embolization

Facial palsy after glomus jugulare tumour embolization

Vascularisation of the geniculate ganglion

An Animal Model of Ischemic Facial Palsy

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