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Trigeminal nerve

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https://www.readbyqxmd.com/read/29454124/brainstem-dose-constraints-in-non-isometric-radiosurgical-treatment-planning-of-trigeminal-neuralgia-a-single-institution-experience
#1
Michael Zhang, Layton A Lamsam, Matthew K Schoen, Swapnil S Mehta, Geoffrey Appelboom, John K Adler, Scott G Soltys, Steven D Chang
INTRODUCTION: CyberKnife stereotactic radiosurgery (SRS) for trigeminal neuralgia (TGN) administers non-isometric, conformational high-dose radiation to the trigeminal nerve with risk of subsequent hypoesthesia. METHODS: We performed a retrospective, single-institution review of 66 TGN patients, treated by CyberKnife, to compare outcomes from two distinct treatment periods (standard dosing, N = 38 and reduced dosing, N = 28). Standard and reduced dosing permitted a maximum brainstem dose of 45 Gy and 25 Gy, respectively, each with a prescription dose of 60 Gy...
February 14, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29452326/awake-microvascular-decompression-for-trigeminal-neuralgia-concept-and-initial-results
#2
Saleem I Abdulrauf, Jorge F Urquiaga, Ritesh Patel, J Andrew Albers, Varun B Sampat, Meghan Baumer, Eric Marvin, Matthew Pierson, Raquel Kragel, Jodi Walsh
OBJECTIVE: The option of performing MVD under awake anesthesia protocol ("awake" MVD) was examined in this initial series to assess whether intraoperative pain evaluation can identify and mitigate insufficient decompression of the trigeminal nerve, improving surgical outcomes. Additionally, "awake" MVD could expand procedure indications for those with comorbidities that would prohibit general endotracheal anesthesia (GEA). METHODS: An IRB-approved prospective study of 10 consecutive adults who underwent MVD for TN was conducted...
February 13, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29451275/cenegermin-for-the-treatment-of-neurotrophic-keratitis
#3
M Sacchetti, A Bruscolini, A Lambiase
The trigeminal nerve provides corneal sensitivity and trophic supply to corneal tissues. The impairment of corneal innervation leads to development of neurotrophic keratitis (NK). NK is a rare, degenerative corneal disease characterized by corneal hypo/anesthesia and development of nonhealing corneal epithelial defects and ulcers. NK is a challenging condition with high medical need due to the lack of approved treatments that can restore corneal integrity. Current treatment of NK aims at stimulating corneal healing and preventing disease progression...
November 2017: Drugs of Today
https://www.readbyqxmd.com/read/29451219/low-frequency-pulsed-electromagnetic-field-pretreated-bone-marrow-derived-mesenchymal-stem-cells-promote-the-regeneration-of-crush-injured-rat-mental-nerve
#4
NaRi Seo, Sung-Ho Lee, Kyung Won Ju, JaeMan Woo, BongJu Kim, SoungMin Kim, Jeong Won Jahng, Jong-Ho Lee
Bone marrow-derived mesenchymal stem cells (BMSCs) have been shown to promote the regeneration of injured peripheral nerves. Pulsed electromagnetic field (PEMF) reportedly promotes the proliferation and neuronal differentiation of BMSCs. Low-frequency PEMF can induce the neuronal differentiation of BMSCs in the absence of nerve growth factors. This study was designed to investigate the effects of low-frequency PEMF pretreatment on the proliferation and function of BMSCs and the effects of low-frequency PEMF pre-treated BMSCs on the regeneration of injured peripheral nerve using in vitro and in vivo experiments...
January 2018: Neural Regeneration Research
https://www.readbyqxmd.com/read/29450873/peripheral-nerve-blocks-for-the-treatment-of-short-lasting-unilateral-neuralgiform-headache-with-conjunctival-injection-and-tearing-sunct-during-pregnancy
#5
Osman Özgür Yalın, Derya Uludüz, Aynur Özge
Short-lasting unilateral neuralgiform headache attacks with conjunctival injection and tearing (SUNCT) is a rare, primary headache syndrome, which is classified as a subtype of trigeminal autonomic cephalalgias. Although SUNCT is usually refractory to treatment, several antiepileptic drugs have recently shown promising results for its treatment. However, there is a lack of evidence regarding the course of SUNCT during pregnancy and the available treatment options. Here, we present a 30-week pregnant female with SUNCT who was successfully treated with infra- and supraorbital nerve blocks...
January 2018: Aǧrı: Ağrı (Algoloji) Derneği'nin Yayın Organıdır, the Journal of the Turkish Society of Algology
https://www.readbyqxmd.com/read/29450305/the-grimace-scale-reliably-assesses-chronic-pain-in-a-rodent-model-of-trigeminal-neuropathic-pain
#6
Titilola Akintola, Charles Raver, Paige Studlack, Olivia Uddin, Radi Masri, Asaf Keller
The limited success in translating basic science findings into effective pain management therapies reflects, in part, the difficulty in reliably assessing pain in experimental animals. This shortcoming is particularly acute in the field of chronic, ongoing pain. Quantitative analysis of facial expressions-the grimace score-was introduced as a promising tool, however, it is thought to reliably assess only pain of short or medium duration (minutes to hours). Here, we test the hypothesis that grimace scores are a reliable metric of ongoing neuropathic pain, by testing the prediction that chronic constriction injury of the infraorbital nerve (CCI-ION) will evoke significant increases in grimace scale scores...
August 2017: Neurobiology of Pain
https://www.readbyqxmd.com/read/29445443/artery-of-trigeminal-nerve-ganglion
#7
Adnan I Qureshi
The artery to trigeminal nerve ganglion has been identified as a branch that arises from the extracranial segment of middle meningeal artery prior to entry into the foramen spinosum. The role of the artery in being the arterial supply to trigeminal nerve ganglion is supported by electrophysiological and clinical suppression of trigeminal nerve activity during selective intra-arterial injection of anesthetics.
December 2017: Journal of Vascular and Interventional Neurology
https://www.readbyqxmd.com/read/29443722/characterizing-treatment-utilization-patterns-for-trigeminal-neuralgia-in-the-united-states
#8
Joanna M Zakrzewska, Ning Wu, John Y K Lee, Brian Werneburg, Deborah Hoffman, Ying Liu
BACKGROUND AND AIM: Trigeminal neuralgia (TN) is a rare orofacial disorder characterized by severe unilateral paroxysmal pain in the region of the fifth cranial nerve. Clinical guidelines recommend carbamazepine (only US Food and Drug Administration-approved drug for TN) and oxcarbazepine as first-line therapies. We utilized the US Truven Health MarketScan database to examine treatment patterns among patients with TN. METHODS: Included patients were aged ≥18 years, newly diagnosed with TN (≥2 TN diagnoses ≥14 days apart; no diagnosis in the prior year), continuously enrolled 1 year pre-index, with ≥3 years' follow-up post-index...
February 13, 2018: Clinical Journal of Pain
https://www.readbyqxmd.com/read/29435207/supernumerary-molars-and-wisdom-tooth-shape-alterations-in-patients-with-neurofibromatosis-type-1
#9
Reinhard E Friedrich, Anika Reul
Objectives: The purpose of the present study was the systematic investigation of numerical and morphological aberrations of teeth in the wisdom teeth region in neurofibromatosis type 1 patients. Material and Methods: The panoramic radiographs of 179 patients were analysed for supernumerary molars and dysplastic wisdom teeth with special reference to facial tumour type. The results were compared to radiographic findings obtained in panoramic radiographs of age- and sex-matched controls...
October 2017: Journal of Oral & Maxillofacial Research
https://www.readbyqxmd.com/read/29433118/-trigeminal-herpes-zoster-presenting-with-high-intensity-signals-for-the-spinal-trigeminal-nucleus-and-tract-on-diffusion-weighted-image-a-case-report-of-stroke-mimic
#10
Takahiro Himeno, Shinichi Takeshima, Satoshi Kubo, Naoyuki Hara, Akio Tanaka, Masaru Kuriyama
A 50-year-old woman was admitted to our hospital with dysesthesia on the right upper portion of her face and a headache. Diffusion-weighted brain magnetic resonance imaging (MRI) revealed high-intensity signals in the dorsolateral portion of the medulla oblongata. She was diagnosed with lateral medullary infarction and was intravenously treated with sodium ozagrel. On the second day of hospitalization, she had nausea and vomiting and showed nystagmus to all directions, suggesting damage to the vestibular nucleus...
February 2018: Brain and Nerve, Shinkei Kenkyū No Shinpo
https://www.readbyqxmd.com/read/29426749/identifying-criteria-for-diagnosis-of-post-traumatic-pain-and-altered-sensation-of-the-maxillary-and-mandibular-branches-of-the-trigeminal-nerve-a-systematic-review
#11
REVIEW
Maria Devine, Murtaza Hirani, Justin Durham, Donald R Nixdorf, Tara Renton
OBJECTIVE: The aim of the study was to systematically identify criteria used to diagnose patients with trigeminal nerve injury. STUDY DESIGN: A systematic review of the literature registered in the PROSPERO database. Inclusion criteria were patients diagnosed with nerve injury of the sensory divisions of the maxillary or mandibular branches of the trigeminal nerve, with reported tests and criteria used for diagnosis and persistent pain or unpleasant sensation associated with nerve injury...
January 5, 2018: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
https://www.readbyqxmd.com/read/29425330/trigeminal-nerve-compression-without-trigeminal-neuralgia-intraoperative-vs-imaging-evidence
#12
Ronak H Jani, Marion A Hughes, Michael S Gold, Barton F Branstetter, Zachary E Ligus, Raymond F Sekula
BACKGROUND: While high-resolution imaging is increasingly used in guiding decisions about surgical interventions for the treatment of trigeminal neuralgia, direct assessment of the extent of vascular contact of the trigeminal nerve is still considered the gold standard for the determination of whether nerve decompression is warranted. OBJECTIVE: To compare intraoperative and magnetic resonance imaging (MRI) findings of the prevalence and severity of vascular compression of the trigeminal nerve in patients without classical trigeminal neuralgia...
February 6, 2018: Neurosurgery
https://www.readbyqxmd.com/read/29422528/epothilone-b-speeds-corneal-nerve-regrowth-and-functional-recovery-through-microtubule-stabilization-and-increased-nerve-beading
#13
Hanqing Wang, Chengju Xiao, Dong Dong, Cuipei Lin, Yunxia Xue, Jun Liu, Mingjuan Wu, Jingxin He, Ting Fu, Hongwei Pan, Xinwei Jiao, Dingli Lu, Zhijie Li
The successful restoration of corneal innervation and function after a corneal injury is a clinically challenging issue. Structural and functional recovery after a nerve injury involves a complex series of steps in which microtubules play a key role. The aim of the current study was to investigate the effects of epothilone B (EpoB), a microtubule-stabilizing agent, on corneal innervation and the functional recovery of the corneal nerve in mice after corneal epithelial abrasion. The pretreatment of mice with EpoB has a remarkable effect on the stabilization of beta-III tubulin, as demonstrated by substantial increases in the visualization of beta-III tubulin, nerve beading, corneal reinnervation, and reaction to stimuli...
February 8, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29416936/characterization-and-treatment-of-unilateral-facial-muscle-spasm-in-linear-scleroderma-a-case-report
#14
Fabio Danisi, Emma Guidi
Background: Linear scleroderma has been associated with muscle spasms ipsilateral to skin lesions. Typically, spasms are located in trigeminal innervated muscles, leading to hemimasticatory spasm (HMS). Case Report: We report a case of linear scleroderma associated with spasm of muscles innervated not only by the trigeminal but also by the facial nerve. Discussion: We review the patient's successful treatment with incobotulinumtoxinA, a formulation of botulinum toxin that has not been reported for use in this condition...
2018: Tremor and Other Hyperkinetic Movements
https://www.readbyqxmd.com/read/29414150/hypo-fractionated-stereotactic-radiotherapy-of-five-fractions-with-linear-accelerator-for-vestibular-schwannomas-a-systematic-review-and-meta-analysis
#15
REVIEW
Thien Nguyen, Courtney Duong, John P Sheppard, Seung Jin Lee, Amar U Kishan, Percy Lee, Stephen Tenn, Robert Chin, Tania B Kaprealian, Isaac Yang
Vestibular schwannomas (VS) are benign tumors stemming from the eighth cranial nerve. Treatment options for VS include conservative management, microsurgery, stereotactic radiosurgery, and fractionated radiotherapy. Though microsurgery has been the standard of care for larger lesions, hypo-fractionated stereotactic radiotherapy (hypo-FSRT) is an emerging modality. However, its clinical efficacy and safety have yet to be established. We conducted a systematic review and meta-analysis of manuscripts indexed in PubMed, Scopus, Web of Science, Embase, and Cochrane databases reporting outcomes of VS cases treated with hypo-FSRT...
January 12, 2018: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/29409594/-horner-s-syndrome-and-paresthesia-in-the-trigeminal-nerve-territory-secondary-to-epidural-analgesia-for-labor
#16
Céline Ferreira, Ana Luísa Macedo, Valentina Almeida
Currently, epidural analgesia is a common procedure for labor analgesia. Although it is considered a safe technique, it is not without complications. Horner's syndrome and paresthesia within the trigeminal nerve distribution are rare complications of epidural analgesia. We report a case of a pregnant woman who developed Horner's syndrome and paresthesia within the distribution of the trigeminal nerve following epidural analgesia for the relief of labor pain.
February 3, 2018: Revista Brasileira de Anestesiologia
https://www.readbyqxmd.com/read/29408426/malignant-peripheral-nerve-sheath-tumor-of-the-trigeminal-nerve-involving-the-middle-and-posterior-cranial-fossa
#17
Aijun Liang, Bin Xi, Chaoyang Zhou, Yu Yang, Jianzhong Zhang, Shaogao Gui, Fanghua Xu, Dengfeng Wan
Although benign trigeminal schwannomas are uncommon, malignant peripheral nerve sheath tumors (MPNSTs) of the trigeminal nerve are extraordinarily rare. This study aimed to describe an exceedingly rare case of MPNST of the trigeminal nerve involving the middle and posterior cranial fossa. Only 20 similar cases of MPNSTs of the trigeminal nerve have been reported so far. The clinical characteristics and management of these extremely rare tumors have also been explored in this study.
February 2, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29397449/the-timing-of-stereotactic-radiosurgery-for-medically-refractory-trigeminal-neuralgia-the-evidence-from-diffusion-tractography-images
#18
Cheng-Chia Lee, Shin Tai Chong, Ching-Jen Chen, Sheng-Che Hung, Huai-Che Yang, Chung-Jung Lin, Chih-Chun Wu, Wen-Yuh Chung, Wan-Yuo Guo, David Hung-Chi Pan, Hsiu-Mei Wu, Jason P Sheehan, Ching-Po Lin
BACKGROUND: Diffusion tensor imaging (DTI) is a novel MRI technique that enables noninvasive evaluation of microstructural alterations in white matter of brain. Initially, DTI was used in intra- or inter-hemispheric association bundles. Recent technical advances are overcoming the challenges of imaging small white matter bundles, such as the cranial nerves. In this study, we use DTI to shed more light on the microstructure changes in long-standing trigeminal neuralgia. We also utilize DTI to study the effect of early stereotactic radiosurgery (SRS) on the microstructures of the trigeminal nerve and to predict the effectiveness of early SRS in the treatment of medically refractory trigeminal neuralgia (TN)...
February 3, 2018: Acta Neurochirurgica
https://www.readbyqxmd.com/read/29395575/age-dependent-trigeminal-and-female-specific-lumbosacral-increase-in-herpes-zoster-distribution-in-the-elderly
#19
Kimiyasu Shiraki, Nozomu Toyama, Atsuko Shiraki, Misako Yajima
BACKGROUND: Varicella-zoster virus causes herpes zoster (HZ) along specific dermatomes, but the effects of age and sex on HZ distribution are unclear. OBJECTIVE: We investigated the age- and sex-dependent distribution characteristics of HZ. METHODS: Patients with HZ were monitored by members of the Miyazaki Dermatologist Society. Questionnaires containing information on age, sex, and dermatome distribution and lesion specimens from 2730 patients were collected, and 2508 PCR-diagnosed cases were analyzed...
January 31, 2018: Journal of Dermatological Science
https://www.readbyqxmd.com/read/29395459/dosimetric-comparison-of-sector-blocked-and-non-sector-blocked-gamma-knife-perfexion-treatment-plans-for-trigeminal-neuralgia
#20
Ethan Kendall, Salahuddin Ahmad, Ozer Algan
The purpose of this study is to compare the quality of trigeminal neuralgia (TN) treatment plans with and without utilizing sector blocking. Twelve patients with 13 cases of TN were evaluated in this retrospective study. Identical magnetic resonance imaging (MRI) contour sets and prescription doses used in treatments were reused for all plans. Treatment plans were compared on the basis of the amount of dose received by critical structures (i.e., brainstem, ipsilateral temporal lobe, optic chiasm, optic nerves, cochlea) and the estimated total treatment time...
January 22, 2018: Medical Dosimetry: Official Journal of the American Association of Medical Dosimetrists
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